Multi-way valve

Abstract

The utility model provides a multi-way valve, which comprises a driving device, a valve body and a control device, the valve body assembly is provided with a mounting cavity and a communicating cavity; the valve element assembly is rotatably arranged in the communicating cavity so as to achieve runner switching of the multi-way valve; the rotating shaft part is rotatably arranged in the mounting cavity in a penetrating mode, one end of the rotating shaft part is arranged at the power output end, and the other end of the rotating shaft part is connected with the valve element assembly to drive the valve element assembly to rotate; the bearing component is arranged in the mounting cavity, the bearing component is provided with a shaft connecting structure, the shaft connecting structure is arranged on the rotating shaft component in a sleeving mode and fixedly connected with the rotating shaft component, and a mounting groove is formed among the rotating shaft component, the valve body assembly and the end, close to the communicating cavity, of the bearing component; and the sealing part is arranged in the mounting groove, and the sealing part is used for sealing a gap between the rotating shaft part and the mounting cavity. By means of the scheme, the problem that in the prior art, due to the fact that an installation groove is formed in the hole wall of the installation opening of the valve body assembly to install a sealing ring, machining of the installation groove is not convenient to achieve can be solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve technical field, specifically, a multi-way valve. BACKGROUND

[0002] The multi-way valve is a control element widely used in air conditioning systems, and the main function is to realize switching of refrigeration and heating modes.

[0003] The multi-way valve mainly comprises a driving device, a valve body assembly and a valve core assembly. The valve body assembly has a mounting hole and a communication cavity, the valve core assembly is rotatably arranged in the communication cavity, the driving device has a rotating shaft part, the rotating shaft part is rotatably arranged in the mounting hole, and the power device drives the valve core assembly to rotate in the valve body assembly through the rotating shaft part, so that the valve core assembly is connected with different system pipelines to realize switching of flow channels. In order to reduce the possibility of fluid leakage, a sealing ring needs to be arranged between the rotating shaft part and the valve seat assembly. In the prior art, a mounting groove is arranged on the hole wall of the mounting port to assemble the sealing ring, but it is not convenient to realize the machining of the mounting groove by arranging the mounting groove on the hole wall of the mounting port. SUMMARY

[0004] The utility model provides a kind of multi-way valve, to solve the problem of prior art in the hole wall of the mounting port of valve body assembly Setting mounting groove to install sealing ring, it is not convenient to realize the machining of the mounting groove.

[0005] The utility model provides a kind of multi-way valve, multi-way valve includes: driving device, with power output end;Valve body assembly has installation cavity and communication cavity;Valve core assembly, rotatably arranged in communication cavity to realize the flow channel switching of multi-way valve;Rotating shaft part, rotatably be provided in installation cavity, one end of rotating shaft part is arranged on power output end, the other end is connected with valve core assembly to drive valve core assembly rotation;Bearing part, it is arranged in installation cavity, bearing part has shaft connection structure, shaft connection structure is set on rotating shaft part and is fixedly connected with rotating shaft part, rotating shaft part, valve body assembly and the end between bearing part close to communication cavity form installation groove;Sealing portion, it is arranged in installation groove, and sealing portion is used to seal the gap between rotating shaft part and installation cavity.

[0006] Further, the bearing part and the valve body assembly are limitedly matched in the axial direction of the bearing part.

[0007] Further, a limiting structure is arranged between the bearing part and the valve body assembly, and the limiting structure limits the movement of the bearing part relative to the valve body assembly in the direction from the installation cavity to the communication cavity.

[0008] Further, a first stepped structure is arranged on the side wall of the installation cavity, a second stepped structure is arranged on the outer side wall of the bearing part, and the first stepped structure and the second stepped structure are abutted to form the limiting structure.

[0009] Further, a limiting part is arranged on the valve body assembly, the limiting part is in limiting cooperation with the bearing part, and the limiting part limits movement of the bearing part relative to the valve body assembly in a direction from the communication cavity to the mounting cavity.

[0010] Further, the valve body assembly has a riveting ring, the riveting ring forms the limiting part, and the riveting ring is formed at an end of the mounting cavity away from the communication cavity, and the riveting ring is in limiting cooperation with an end of the bearing part away from the sealing part.

[0011] Further, the bearing part comprises a bearing seat arranged in the mounting cavity, an installation groove is formed among the bearing seat, the valve body assembly and the shaft part, and a first bearing is arranged on the bearing seat, and an axial connection structure of the first bearing is sleeved on the shaft part and fixedly connected with the shaft part.

[0012] Further, the bearing part further comprises a second bearing arranged at an end of the first bearing away from the communication cavity, the second bearing is spaced apart from the first bearing, and an axial connection structure of the second bearing is sleeved on the shaft part and fixedly connected with the shaft part.

[0013] Further, the first bearing and the second bearing are both rolling bearings, and the bearing part further comprises a support arranged between an outer ring of the first bearing and an outer ring of the second bearing, and the support is used for supporting the first bearing and the second bearing.

[0014] Further, the support comprises a bushing, and the bushing is in interference fit with the valve body assembly.

[0015] Further, the shaft part comprises a first shaft segment and a second shaft segment arranged in two parts, the first shaft segment and the second shaft segment are coaxially arranged, the first shaft segment is drivingly connected with the second shaft segment to enable synchronous rotation of the first shaft segment and the second shaft segment, an end of the first shaft segment away from the second shaft segment is arranged on the power output end, an end of the second shaft segment away from the first shaft segment is connected with the valve core assembly to drive the valve core assembly to rotate, an inner ring of the first bearing is sleeved on the second shaft segment and fixed with the second shaft segment, and an inner ring of the second bearing is sleeved on the first shaft segment and fixed with the first shaft segment.

[0016] Further, the sealing part comprises a sealing ring and an O-ring which are sleeved in sequence from inside to outside, and the sealing ring is sleeved on the shaft part.

[0017] The technical scheme of the utility model discloses a plurality of components are assembled to form the installation groove for installing the sealing part, avoiding the mechanical processing process such as milling or grinding on the side wall of the installation cavity of the valve body assembly. BRIEF DESCRIPTION OF DRAWINGS

[0018] The drawings accompanying the specification integrated in part of the present application are used to provide further understanding of the utility model, the illustrative embodiment of the utility model and the explanation thereof are used to explain the utility model, and do not constitute improper limitation to the utility model.

[0019] Figure 1 The cross-sectional structure schematic diagram of the multi-way valve provided by the utility model is shown;

[0020] Figure 2 The cross-sectional structure schematic diagram of the valve seat provided by the utility model is shown;

[0021] Figure 3 The structure schematic diagram of the multi-way valve provided by the utility model is shown;

[0022] Figure 4 The structure schematic diagram of the valve seat provided by the utility model is shown;

[0023] Figure 5 The structure schematic diagram of the sealing gasket provided by the utility model is shown.

[0024] Among them, the above-mentioned drawing includes the following sign:

[0025] 10, drive device; 11, drive assembly; 12, speed reduction wheel set; 121, sun gear; 122, planetary gear; 123, output wheel;

[0026] 20, valve body assembly; 21, valve seat; 22, valve cover;

[0027] 201, installation cavity;

[0028] 2011, first chamber; 20111, limit slot;

[0029] 2012, second chamber; 20121, first hole section; 20122, second hole section;

[0030] 202, communication cavity; 203, communication port; 204, inlet and outlet; 205, communication hole;

[0031] 30. Valve core assembly; 301. Flow passage;

[0032] 40. Rotating shaft assembly; 41. First shaft section; 42. Second shaft section;

[0033] 50. Bearing components;

[0034] 51. Bearing housing; 52. First bearing; 53. Second bearing; 54. Support component;

[0035] 60. Sealing part; 61. Sealing ring; 62. O-ring;

[0036] 71. Limiting structure; 72. Limiting part;

[0037] 81. Press-fit ring assembly; 811. Press-fit flange; 82. Sealing spring gasket;

[0038] 01. Mounting slot. Detailed Implementation

[0039] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0040] like Figure 1 As shown, this utility model embodiment provides a multi-way valve, which includes a drive device 10, a valve body assembly 20, a valve core assembly 30, a rotating shaft component 40, a bearing component 50, and a sealing part 60. The drive device 10 has a power output end; the valve body assembly 20 has a mounting cavity 201 and a connecting cavity 202; the valve core assembly 30 is rotatably disposed in the connecting cavity 202 to realize the flow channel switching of the multi-way valve; the rotating shaft component 40 is rotatably disposed in the mounting cavity 201, one end of the rotating shaft component 40 is disposed on the power output end, and the other end is connected to the valve core assembly 30 to drive the valve core assembly 30 to rotate; the bearing component 50 is disposed in the mounting cavity 201, and the bearing component 50 has a shaft connection structure, which is sleeved on the rotating shaft component 40 and connected to the rotating shaft component 40, and a mounting groove 01 is formed between the rotating shaft component 40, the valve body assembly 20, and the end of the bearing component 50 near the connecting cavity 202; the sealing part 60 is disposed in the mounting groove 01, and the sealing part 60 is used to seal the gap between the rotating shaft component 40 and the mounting cavity 201.

[0041] The technical scheme is applied, the installation groove 01 for installing the sealing part 60 is formed through assembly of multiple components, and mechanical processing such as milling or grinding of the side wall of the installation cavity 201 of the valve body assembly 20 is avoided.

[0042] In the embodiment of the scheme, the sealing part 60 is annular in structure, the annular installation groove 01 is formed between the one end of the valve body assembly 20 close to the communication cavity 202 and the bearing component 50, and the installation groove 01 is annularly arranged on the outer periphery of the rotating shaft component 40 along the circumferential direction of the rotating shaft component 40.

[0043] In the embodiment of the scheme, the valve body assembly 20 comprises a valve seat 21 and a valve cover 22, the valve seat 21 is provided with the installation cavity 201, and the valve seat 21 and the valve cover 22 are enclosed to form the communication cavity 202, so as to facilitate installation of the valve core assembly 30.

[0044] As shown in Figure 1 and Figure 3 Specifically, the valve body assembly 20 is further provided with a plurality of communication ports 203 and an inlet and outlet 204, the plurality of communication ports 203 are annularly and spacedly arranged on the valve body assembly 20, and the plurality of communication ports 203 are all in communication with the communication cavity 202, the inlet and outlet 204 is also in communication with the communication cavity 202, the valve core assembly 30 is provided with a flow-through channel 301, one end of the flow-through channel 301 is located on the rotation axis of the valve core assembly 30 and is in communication with the inlet and outlet 204, the other end of the flow-through channel 301 extends to the end face of the valve core assembly 30 facing the installation cavity 201 and is selectively in communication with the communication ports 203 in the rotation process of the valve core assembly 30. When switching of the flow channel is needed, the valve core assembly 30 can be driven to rotate between the plurality of communication ports 203 by the driving device 10, so that the flow-through channel 301 is in communication with different communication ports 203, and switching of the heating and cooling modes can be realized.

[0045] As shown in Figure 1 and Figure 2 Further, the valve body assembly 20 is further provided with a communication hole 205, along the axis direction of the rotating shaft component 40, the installation cavity 201, the communication hole 205 and the communication cavity 202 are sequentially in communication, the diameter of the communication hole 205 is smaller than the diameter of the one end of the installation cavity 201 in communication with the communication hole 205, and the diameter of the communication hole 205 is smaller than the diameter of the one end of the communication cavity 202 in communication with the communication hole 205.

[0046] Specifically, the installation cavity 201 includes a first cavity 2011 and a second cavity 2012 communicated in sequence along the axial direction of the bearing component 50, the cross-sectional area of the first cavity 2011 is larger than that of the second cavity 2012, and the first cavity 2011 is located at the end of the second cavity 2012 away from the communication cavity 202. The drive device 10 includes a drive assembly 11 and a speed reduction wheel set 12, and the speed reduction wheel set 12 is arranged in the first cavity 2011.

[0047] In the embodiment of the present scheme, the speed reduction wheel set 12 includes a sun gear 121, a plurality of planet gears 122, and an output gear 123. The sun gear 121 is drivingly connected with the drive assembly 11. The plurality of planet gears 122 are arranged, and each planet gear 122 is in meshing connection with the sun gear 121. The output gear 123 has an internal gear structure arranged on the inner side of the output gear 123, and the internal gear structure is rotatably sleeved on the outer side of the plurality of planet gears 122. The external teeth of the plurality of planet gears 122 are in meshing connection with the internal gear structure. The output gear 123 forms a power output end of the drive device 10. The end of the shaft component 40 away from the valve core assembly 30 is connected with the end of the output gear 123 facing the second cavity 2012.

[0048] As shown in Figure 1 , further, the multi-way valve further includes a press ring component 81, which is sleeved on the outer periphery of the output gear 123 and is in threaded connection with the valve body assembly 20. The end of the press ring component 81 away from the second cavity 2012 is inwardly bent and forms a press flange 811, which is in limiting cooperation with the end of the speed reduction wheel set 12 away from the shaft component 40 to limit the position of the speed reduction wheel set 12 in the first cavity 2011.

[0049] As shown in Figure 1 and Figure 5 , in the embodiment of the present scheme, the multi-way valve further includes a sealing spring pad 82 made of metal material, which has an annular structure and is sleeved on the outer periphery of the speed reduction wheel set 12. The end of the press ring component 81 away from the press flange 811 is in abutting cooperation with the sealing spring pad 82. The sealing spring pad 82 is deformed under the pressing action of the press ring component 81 to play a sealing role.

[0050] As shown in Figure 1 and Figure 4As shown, further, the bottom wall of the first chamber 2011 is provided with a protruding structure, which is located in the sealing gasket 82, and a limiting groove 20111 is arranged on the protruding structure, the limiting groove 20111 is an arc structure, and the limiting groove 20111 extends along the rotation direction of the output wheel 123. The direction of the output wheel 123 towards the bottom wall of the first chamber 2011 has a stop block, which is used for stop cooperation with both ends of the extending direction of the limiting groove 20111 to limit the rotation range of the output wheel 123.

[0051] Further, the bearing part 50 is limited in the axial direction of the bearing part 50 with the valve body assembly 20. When the communication cavity is filled with high-pressure fluid, the above arrangement can reduce or avoid the possibility of the bearing part 50 and the sealing part 60 being lifted and moved or falling off by the high-pressure fluid in the high-pressure state, and improves the stability of the bearing part 50 and the sealing part 60. Moreover, the above arrangement enables the bearing part 50 to be quickly and accurately positioned to the predetermined position of the valve body assembly 20 during assembly, ensures the positional accuracy of the bearing part 50 and the valve body assembly 20 in the axial direction of the bearing part 50, improves the convenience and accuracy during the formation of the mounting groove 01, simplifies the assembly process, and improves the assembly efficiency.

[0052] As shown in Figure 1 and Figure 2 Specifically, a limiting structure 71 is arranged between the bearing part 50 and the valve body assembly 20, which limits the movement of the bearing part 50 relative to the valve body assembly 20 in the direction from the mounting cavity 201 to the communication cavity 202. In this way, the bearing part 50 can accurately reach the predetermined position during assembly, improving the convenience of the assembly process of the multi-way valve.

[0053] In the embodiment of the present scheme, a first stepped structure is arranged on the side wall of the mounting cavity 201, and a second stepped structure is arranged on the outer side wall of the bearing part 50, and the first stepped structure and the second stepped structure are in abutting cooperation to form the limiting structure 71. The first stepped structure and the second stepped structure cooperate with each other to improve the positional accuracy of the bearing part 50 during assembly and reduce assembly errors. Moreover, the above arrangement has a simple structure and is convenient for assembly of the bearing part 50 and the valve body assembly 20.

[0054] Specifically, a first stepped structure is arranged on the side wall of the second chamber 2012.

[0055] In the embodiment of the present scheme, the second cavity 2012 comprises a first hole section 20121 and a second hole section 20122 which are sequentially communicated along the axial direction of the bearing component 50, the diameter of the first hole section 20121 is larger than that of the second hole section 20122, a first stepped structure is formed between the first hole section 20121 and the second hole section 20122, the second hole section 20122 is communicated with the communicating hole 205, and the diameter of the second hole section 20122 is larger than that of the communicating hole 205. The shape of the second stepped structure on the outer side wall of the bearing component 50 is adapted to the shape of the first stepped structure.

[0056] Further, a limiting portion 72 is arranged on the valve body assembly 20, the limiting portion 72 is in limiting cooperation with the bearing component 50, and the limiting portion 72 limits the movement of the bearing component 50 relative to the valve body assembly 20 in the direction from the communicating cavity 202 to the mounting cavity 201. In the embodiment of the present scheme, the limiting portion 72 and the limiting structure 71 are spaced apart along the axial direction of the rotating shaft component 40. The limiting structure 71 and the limiting portion 72 respectively form a limit at two different positions in the axial direction of the bearing component 50, the limiting structure 71 limits the movement of the bearing component 50 in the direction from the mounting cavity 201 to the communicating cavity 202, and the limiting portion 72 limits the movement of the bearing component 50 in the direction from the communicating cavity 202 to the mounting cavity 201. The bidirectional limiting ensures that the bearing component 50 and the sealing portion 60 maintain stable positions during the operation of the multi-way valve, avoids the axial displacement caused by vibration or external force, and thus improves the stability of the overall structure.

[0057] Specifically, the valve body assembly 20 has a riveting ring, the riveting ring forms the limiting portion 72, and the riveting ring is formed at the end of the mounting cavity 201 away from the communicating cavity 202 and is in limiting cooperation with the end of the bearing component 50 away from the sealing portion 60. The riveting ring is simple in structure, easy to process, and convenient for limiting the bearing component 50.

[0058] In the embodiment of the present scheme, the cooperation of the limiting portion 72 and the limiting structure 71 simplifies the assembly process of the multi-way valve. During assembly, the bearing component 50 can be preliminarily positioned by the limiting structure, and then finally fixed by the riveting ring, which does not require complex adjustment, improves the assembly efficiency and controllability of the manufacturing process.

[0059] Moreover, during maintenance, the design of the limiting portion 72 and the limiting structure 71 makes it more convenient to install and replace the bearing component 50.

[0060] In the embodiment of the present scheme, the bearing component 50 comprises a bearing seat 51 and a first bearing 52, the bearing seat 51 is arranged in the mounting cavity 201, and a mounting groove 01 is formed between the bearing seat 51, the valve body assembly 20 and the rotating shaft component 40; the first bearing 52 is arranged on the bearing seat 51, and the shaft connecting structure of the first bearing 52 is sleeved on the rotating shaft component 40 and fixedly connected with the rotating shaft component 40. Specifically, a second stepped structure is arranged on the outer side wall of the bearing seat 51, the bearing seat 51 comprises a first segment and a second segment connected in sequence along the axis direction, the inner diameter of the first segment is larger than that of the second segment, a third stepped structure is formed between the first segment and the second segment, the second segment is arranged close to the sealing part 60, and the first bearing 52 is arranged on the third stepped structure. In this way, the stability of the installation of the first bearing 52 can be improved, and the second segment can separate the sealing part 60 from the first bearing 52, thereby effectively protecting the sealing part 60.

[0061] The present scheme does not limit the specific form of the first bearing 52. Specifically, the first bearing 52 can be arranged in the form of a thrust bearing or in the form of a rolling bearing.

[0062] When the first bearing 52 is a thrust bearing, the first bearing 52 has a shaft ring and a seat ring, the shaft ring of the first bearing 52 is connected with the rotating shaft component 40, and the seat ring of the first bearing 52 is connected with the bearing seat 51. It can be understood that when the first bearing is in the form of a thrust bearing, the shaft ring of the thrust bearing is the shaft connecting structure.

[0063] When the first bearing 52 is a rolling bearing, the first bearing 52 has an inner ring and an outer ring, the inner ring of the first bearing 52 is connected with the rotating shaft component 40, and the outer ring of the first bearing 52 is connected with the bearing seat 51. It can be understood that when the first bearing is in the form of a rolling bearing, the inner ring of the rolling bearing is the shaft connecting structure.

[0064] In the embodiment of the present scheme, the bearing component 50 further comprises a second bearing 53. Specifically, the second bearing 53 is arranged at one end of the first bearing 52 away from the communication cavity 202, the second bearing 53 is spaced apart from the first bearing 52, and the shaft connecting structure of the second bearing 53 is sleeved on the rotating shaft component 40 and connected with the rotating shaft component 40. The arrangement of the first bearing 52 and the second bearing 53 forms a double-support structure, which can more effectively disperse the load and torque borne by the rotating shaft component 40 during rotation, reduce vibration and wear caused by uneven load, and improve the stability of the rotating process of the rotating shaft component 40 and the stability of the overall structure.

[0065] The present scheme does not limit the specific form of the second bearing 53. Specifically, the second bearing 53 can be arranged in the form of a thrust bearing or in the form of a rolling bearing.

[0066] When the second bearing 53 is a thrust bearing, the second bearing 53 has an axle and a seat, the axle of the second bearing 53 is connected with the rotating shaft component 40, and the seat of the second bearing 53 is fixed in the first hole section 20121. It can be understood that when the second bearing 53 is in the form of a thrust bearing, the axle of the thrust bearing is the shaft connection structure.

[0067] When the second bearing 53 is a rolling bearing, the second bearing 53 has an inner ring and an outer ring, the inner ring of the second bearing 53 is connected with the rotating shaft component 40, and the outer ring of the second bearing 53 is fixed in the first hole section 20121. It can be understood that when the second bearing 53 is a rolling bearing, the inner ring of the rolling bearing is the shaft connection structure.

[0068] In the embodiment of the present scheme, the first bearing 52 and the second bearing 53 are both rolling bearings, and the bearing component 50 further comprises a support 54, which is arranged between the outer ring of the first bearing 52 and the outer ring of the second bearing 53, and is used to support the first bearing 52 and the second bearing 53. By adding the support 54, the rigidity of the bearing component 50 as a whole is enhanced.

[0069] Specifically, the support 54 comprises a bushing, which is in interference fit with the valve body assembly 20, and has a spacing between the inner side wall of the bushing and the rotating shaft component 40. The bushing is in interference fit with the valve body assembly 20, and is pressed into the second cavity 2012 of the valve body assembly 20 during assembly, so as to limit the axial movement of the bushing, stabilize the positions of the first bearing 52 and the second bearing 53, and improve the fixation of the bearing component 50 and the rotating shaft component 40 in the axial direction.

[0070] Further, the end face of the first bearing 52 away from the sealing part 60 is flush with the end face of the first section away from the second section. Moreover, the end of the bushing close to the first bearing 52 is in abutting fit with the end face of the bearing seat 51 and the outer ring of the first bearing 52, respectively.

[0071] In some embodiments of the present scheme, the second bearing 53 is a thrust bearing, i.e., the second bearing 53 has an axle and a seat, at this time, the bearing component 50 does not comprise the support 54. An upward stepped face is formed on the rotating shaft component 40, the first bearing 52 is located below the stepped face, the second bearing 53 is located above the stepped face, the seat of the second bearing 53 is located above the axle of the second bearing 53, the axle of the second bearing 53 is connected with the stepped face, and the seat of the second bearing 53 is riveted with the riveting ring to fix the seat of the second bearing 53 in the first hole section 20121.

[0072] In the embodiment of the present scheme, the rotating shaft component 40 comprises a first shaft segment 41 and a second shaft segment 42 connected in sequence along the axial direction, and the end of the first shaft segment 41 away from the second shaft segment 42 is arranged at the end of the output wheel 123 facing the second cavity 2012; the first shaft segment 41 and the second shaft segment 42 are arranged separately, the end of the first shaft segment 41 away from the output wheel 123 is provided with a mounting hole, the cross section of the mounting hole is in a polygonal structure, the end of the second shaft segment 42 is arranged in the mounting hole, and the first shaft segment 41 is drivingly connected with the second shaft segment 42 to enable the first shaft segment 41 and the second shaft segment 42 to rotate synchronously, and the other end of the second shaft segment 42 is arranged in the communication cavity 202 and fixedly connected with the valve core assembly 30.

[0073] The diameter of the second shaft segment 42 is smaller than that of the first shaft segment 41, the inner ring of the second bearing 53 is fixedly connected with the first shaft segment 41, the inner ring of the first bearing 52 is fixedly connected with the second shaft segment 42, and the sealing part 60 is sealingly matched with the second shaft segment 42. In this way, the coaxiality of the rotating shaft component 40, the first bearing 52 and the second bearing 53 can be improved, and the stability of the rotating shaft component 40 during rotation can be improved.

[0074] Further, the sealing part 60 comprises a sealing ring 61 and an O-ring 62 arranged in sequence from inside to outside, and the sealing ring 61 is arranged on the rotating shaft component 40. The combination of the sealing ring 61 and the O-ring 62 forms a multiple sealing barrier, that is, even if one of the sealing members fails, the other sealing member can continue to provide a sealing effect, thereby increasing the safety and reliability of the multi-way valve.

[0075] In the embodiment of the present scheme, the O-ring 62 applies a force to the sealing ring 61 in a direction towards the rotating shaft component 40, thereby improving the tightness of the contact between the sealing ring 61 and the rotating shaft component 40 and improving the sealing effect of the sealing ring 61.

[0076] Specifically, in the embodiment of the present scheme, the sealing ring 61 is made of PTFE.

[0077] Specifically, when assembling the sealing part 60 and the bearing component 50, first, the sealing ring 61 and the O-ring 62 are installed to the bottom of the second cavity 2012; the bearing seat 51 is installed into the second cavity 2012, and the position of the bearing seat 51 is limited by the limiting structure; the first bearing 52 is installed to the bearing seat 51; the bushing is press-fitted to the outer rings of the bearing seat 51 and the first bearing 52; the second bearing 53 is installed to the bushing, so that the outer ring of the second bearing 53 abuts against the end face of the bushing away from the first bearing 52; and the riveting ring is riveted to the end face of the outer ring of the second bearing 53 away from the bushing.

[0078] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, devices, components and / or combinations thereof, but do not preclude the presence or addition of one or more other features, steps, operations, devices, components and / or combinations thereof.

[0079] The relative arrangement of parts and steps, numerical expressions, and numerical values set forth in these embodiments are not intended to limit the scope of the present application unless otherwise specifically stated. At the same time, it should be understood that the sizes of the various parts shown in the drawings are not drawn in accordance with the actual proportional relationship. The technology, methods and devices known to those skilled in the related art can not be discussed in detail, but should be considered as part of the specification under appropriate circumstances. In all examples shown and discussed herein, any specific value should be interpreted as merely exemplary and not as a limitation. Therefore, other examples of exemplary embodiments can have different values. It should be noted that similar reference numbers and letters represent similar items in the following drawings, so further discussion is not needed in subsequent drawings once an item is defined in one drawing.

[0080] In the description of the present application, it should be understood that the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" and the like indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and in the absence of contrary statements, these orientation words do not indicate and imply that the indicated device or element must have a particular orientation or be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the scope of protection of the present application; the orientation words "inner, outer" refer to the inner and outer of the contour of each component itself.

[0081] For purposes of the description hereinafter, spatial relative terms, such as "above", "below", "upper", "lower", and the like, can be used to describe the relative position of one element or feature to another as illustrated in the figures. It will be understood that the spatial relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "up" other elements or features would then be oriented "below" or "down" the other elements or features. Thus, the exemplary term "above" can encompass both an orientation of above and below. The device can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatial relative descriptors used herein interpreted accordingly.

[0082] In addition, it should be noted that the use of "first", "second", and the like words of distinction do not connote any meaning of importance, but are used only to distinguish one element from another, and are used in the context of this application only for ease of description. Thus, the use of such terms is not intended to limit the scope of the present application.

[0083] The preferred embodiments of the present application have been described above with the purpose of enabling not only the best modes contemplated by the inventor of carrying out the application, but also as examples of embodiments of the present application to assist those of ordinary skill in the art in understanding the application and its practical application. Various modifications and changes can be made to the present application by those of ordinary skill in the art without departing from the spirit and scope of the present application. Any modifications, equivalent replacements, improvements, and the like made within the spirit and principle of the present application shall be included in the scope of the present application.

Claims

1. A multi-way valve characterized by comprising: The multi-way valve comprises: a driving device (10) having a power output end; a valve body assembly (20) having a mounting cavity (201) and a communication cavity (202); a valve core assembly (30) rotatably arranged in the communication cavity (202) to realize flow path switching of the multi-way valve; a rotating shaft component (40) rotatably arranged in the mounting cavity (201), one end of the rotating shaft component (40) being arranged on the power output end, and the other end being connected with the valve core assembly (30) to drive the valve core assembly (30) to rotate; a bearing component (50) arranged in the mounting cavity (201), the bearing component (50) having a shaft connecting structure, the shaft connecting structure being sleeved on the rotating shaft component (40) and being fixedly connected with the rotating shaft component (40), an installation groove (01) being formed between one end of the rotating shaft component (40), the valve body assembly (20) and the bearing component (50) close to the communication cavity (202); a sealing part (60) arranged in the installation groove (01), the sealing part (60) being used for sealing the gap between the rotating shaft component (40) and the mounting cavity (201).

2. The multi-way valve according to claim 1, characterized by The bearing component (50) and the valve body assembly (20) are limitingly matched in the axial direction of the bearing component (50).

3. The multi-way valve according to claim 2, characterized by A limiting structure (71) is arranged between the bearing component (50) and the valve body assembly (20), the limiting structure (71) limiting the movement of the bearing component (50) relative to the valve body assembly (20) in the direction from the mounting cavity (201) to the communication cavity (202).

4. The multiple port valve of claim 3, wherein A first stepped structure is arranged on the side wall of the mounting cavity (201), a second stepped structure is arranged on the outer side wall of the bearing component (50), and the first stepped structure and the second stepped structure are abuttingly matched to form the limiting structure (71).

5. The multiple port valve of claim 2, wherein, A limiting part (72) is arranged on the valve body assembly (20), the limiting part (72) being limitingly matched with the bearing component (50), and the limiting part (72) limiting the movement of the bearing component (50) relative to the valve body assembly (20) in the direction from the communication cavity (202) to the mounting cavity (201).

6. The multiple port valve of claim 5, wherein, The valve body assembly (20) has a riveting ring, the riveting ring forming the limiting part (72), the riveting ring being formed at one end of the mounting cavity (201) away from the communication cavity (202), and the riveting ring being limitingly matched with one end of the bearing component (50) away from the sealing part (60).

7. The multi-way valve according to claim 1, wherein The bearing component (50) comprises: a bearing seat (51) arranged in the mounting cavity (201), the bearing seat (51), the valve body assembly (20) and the rotating shaft component (40) forming the installation groove (01); a first bearing (52) arranged on the bearing seat (51), the shaft connecting structure of the first bearing (52) being sleeved on the rotating shaft component (40) and being fixedly connected with the rotating shaft component (40).

8. The multiple way valve of claim 7, wherein, The bearing component (50) further comprises: A second bearing (53) is arranged at an end of the first bearing (52) away from the communication cavity (202), the second bearing (53) is spaced apart from the first bearing (52), and a shaft connecting structure of the second bearing (53) is sleeved on the rotating shaft component (40) and fixedly connected with the rotating shaft component (40).

9. The multiple way valve of claim 8, wherein, The first bearing (52) and the second bearing (53) are both rolling bearings, and the bearing component (50) further comprises a support (54) arranged between the outer ring of the first bearing (52) and the outer ring of the second bearing (53), and the support (54) is used for supporting the first bearing (52) and the second bearing (53).

10. The multiple way valve of claim 9, wherein, The support (54) comprises a bushing in interference fit with the valve body assembly (20).

11. The multiple-way valve according to claim 9, characterized in that The rotating shaft component (40) comprises a first shaft segment (41) and a second shaft segment (42) arranged in two parts, the first shaft segment (41) and the second shaft segment (42) are coaxially arranged, the first shaft segment (41) is drivingly connected with the second shaft segment (42) to enable synchronous rotation of the first shaft segment (41) and the second shaft segment (42), an end of the first shaft segment (41) away from the second shaft segment (42) is arranged on the power output end, an end of the second shaft segment (42) away from the first shaft segment (41) is connected with the spool assembly (30) to drive the spool assembly (30) to rotate, an inner ring of the first bearing (52) is sleeved on the second shaft segment (42) and fixedly connected with the second shaft segment (42), and an inner ring of the second bearing (53) is sleeved on the first shaft segment (41) and fixedly connected with the first shaft segment (41).

12. The multiple-way valve according to claim 1, characterized in that The sealing part (60) comprises a sealing ring (61) and an O-ring (62) sleeved in sequence from inside to outside, and the sealing ring (61) is sleeved on the rotating shaft component (40).

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