Sealing assembly and proportioning valve

Abstract

The utility model discloses a sealing assembly and a proportioning valve, the sealing assembly comprises a lip-type sealing ring and a support frame, the lip-type sealing ring is provided with a ring hole and is provided with an inner end side and an outer end side along the axis direction, the lip of the lip-type sealing ring is arranged on the inner end side, the outer end side is provided with a sealing rib, the sealing rib is annular and is arranged on the periphery of the ring hole in a circling manner, and the support frame is arranged on the support frame. The supporting frame is annular and embedded in the ring hole, and the axis direction of the supporting frame is the same as that of the lip type sealing ring. The proportioning valve seals the valve element and the valve shell through the sealing assembly. According to the sealing assembly and the proportioning valve, the supporting frame is arranged in the lip type sealing ring for supporting, and compared with a traditional soft sealing mode, the sealing performance between the sealing assembly and the valve shell and between the sealing assembly and the valve element is greatly improved; the sealing assembly is simple in structure and convenient to assemble.

Description

Technical Field

[0001] The utility model relates to the technical field of regulating valves, in particular to a sealing component and a proportional regulating valve. Background Art

[0002] The proportional control valve is used in the vehicle management system to receive the vehicle action instructions and switch the flow direction of the coolant in the vehicle according to the demand to achieve the function of vehicle temperature regulation. At present, the sealing schemes of the proportional control valves on the market mainly include hard sealing and soft sealing. Among them, the hard sealing method will make the parts assembly more difficult, while the soft sealing method will not withstand high pressure and cannot meet the universal requirements of customers. Therefore, it is necessary to make new innovations. Utility Model Content

[0003] The purpose of the utility model is to solve the deficiencies in the prior art, so a sealing assembly and a proportional control valve are proposed, and the specific scheme is as follows:

[0004] The utility model provides a sealing component, which comprises a lip seal ring and a support frame, wherein the lip seal ring has a ring hole, and the lip seal ring has an inner end side and an outer end side along its axial direction, the lip of the lip seal ring is arranged on the inner end side, and the outer end side is provided with a sealing rib, and the sealing rib ring is arranged on the periphery of the ring hole, and the support frame is annular, and the support frame is embedded in the ring hole of the lip seal ring, and the axial direction of the support frame is the same as the axial direction of the lip seal ring.

[0005] Furthermore, a first groove structure is provided on the hole wall of the circle hole, a first protrusion structure is provided on the circumferential side wall of the support frame corresponding to the first groove structure, and the support frame is embedded in the circle hole through the cooperation of the first protrusion structure and the first groove structure.

[0006] Furthermore, the first groove structure passes through the outer end side of the lip seal ring.

[0007] Furthermore, a second protrusion structure is provided on the hole wall of the circle hole, a second groove structure is provided on the circumferential side wall of the support frame corresponding to the second protrusion structure, and the support frame is embedded in the circle hole through the cooperation of the second groove structure and the second protrusion structure.

[0008] Furthermore, the support frame has a first end side and a second end side along its axial direction, the first end side corresponds to the inner end side, and the second groove structure passes through the first end side.

[0009] Furthermore, the outer end side is provided with a plurality of sealing ribs which are coaxially arranged but have different diameters.

[0010] Furthermore, a plurality of embedded protrusion structures and / or embedded groove structures are provided on the circumferential side wall of the lip seal ring.

[0011] The utility model also provides a proportional control valve, which includes a valve housing, a fixing frame, a valve core and the above-mentioned sealing assembly, wherein a valve cavity is formed in the valve housing, a plurality of valve ports connected to the valve cavity are arranged on the circumferential side walls of the valve housing, the fixing frame is arranged in the valve cavity, a receiving cavity is formed in the fixing frame, a through opening connected to the receiving cavity is arranged on the fixing frame corresponding to the valve port, the valve core is rotatably arranged in the receiving cavity, the axial direction of the valve core is consistent with the axial direction of the valve housing, a flow channel is arranged in the valve core, and a flow channel opening connected to the flow channel is arranged on the circumferential side walls of the valve core, the sealing assembly is embedded in the fixing frame and arranged around the periphery of the through opening, the outer end side of the lip seal ring faces the valve housing, and the lip seal ring is respectively abutted and sealed against the valve housing and the valve core.

[0012] Furthermore, a ring groove is provided on the outer wall of the fixing frame, the ring groove is arranged around the periphery of the through opening, the outer lip of the lip seal ring is embedded in the ring groove, and the inner lip of the lip seal ring abuts against the valve core through the through opening.

[0013] Furthermore, a matching embedded groove structure is provided on the outer ring groove wall of the ring groove at a position corresponding to the embedded protrusion structure provided on the circumferential side wall of the lip seal ring; and / or

[0014] A matching embedded protrusion structure is arranged on the outer ring groove wall of the ring groove at a position corresponding to the embedded groove structure arranged on the circumferential side wall of the lip type sealing ring.

[0015] Compared with the prior art, the sealing assembly and proportional control valve of the present application have at least one or more of the following beneficial effects:

[0016] The sealing assembly and proportional control valve of the present application are provided with a support frame inside the lip seal ring for support. Compared with the traditional soft sealing method, the sealing performance between the sealing assembly and the valve housing and the valve core is greatly improved. After testing, the sealing performance between the lip seal ring and the valve housing and the valve core is enhanced from close to 0 leakage under 160Kpa environment to fully meet the 0 leakage requirement under 350Kpa environment; the sealing assembly has a simple structure and is easy to assemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the main structure of a proportional control valve provided in an embodiment of the present application;

[0018] Figure 2 A schematic diagram of the explosion structure of the proportional control valve provided in an embodiment of the present application;

[0019] Figure 3 A schematic diagram of a longitudinal cross-sectional structure of a proportional control valve provided in an embodiment of the present application;

[0020] Figure 4 A schematic diagram of the top view of the housing provided in an embodiment of the present application;

[0021] Figure 5 A schematic diagram of a transverse cross-sectional structure of a housing provided in an embodiment of the present application;

[0022] Figure 6 A schematic diagram of a transverse cross-sectional structure of a proportional control valve provided in an embodiment of the present application;

[0023] Figure 7 A schematic diagram of the three-dimensional structure of a fixing frame provided in an embodiment of the present application;

[0024] Figure 8 A schematic diagram of a transverse cross-sectional structure of a fixing frame provided in an embodiment of the present application;

[0025] Fig. 9 A schematic diagram of the three-dimensional structure of the valve core provided in an embodiment of the present application;

[0026] Fig.10 A schematic diagram of a longitudinal cross-sectional structure of a valve core provided in an embodiment of the present application;

[0027] Fig.11 A schematic diagram of the three-dimensional structure of a cover body provided in an embodiment of the present application;

[0028] Fig.12 A schematic diagram of the three-dimensional structure of a lip seal ring provided in an embodiment of the present application;

[0029] Fig.13 A schematic diagram of the main structure of a lip seal ring provided in an embodiment of the present application;

[0030] Fig.14 A schematic diagram of the three-dimensional structure of the support frame provided in an embodiment of the present application;

[0031] Fig.15 A schematic diagram of the three-dimensional structure of a sealing assembly provided in an embodiment of the present application;

[0032] Fig.16 A schematic diagram of a transverse cross-sectional structure of a proportional control valve provided in an embodiment of the present application when in mode 1;

[0033] Fig.17 A schematic diagram of a transverse cross-sectional structure of a proportional control valve provided in an embodiment of the present application when in a typical state of mode 2;

[0034] Fig.18This is a schematic diagram of the transverse cross-sectional structure of the proportional control valve provided in an embodiment of the present application when it is in mode three.

[0035] Among them, 1-lip seal ring, 11-ring hole, 111-first groove structure, 12-inner end side, 13-outer end side, 14-lip mouth, 15-sealing rib, 16-embedded protrusion structure, 2-support frame, 21-first protrusion structure, 22-first end side, 23-second end side, 3-valve shell, 31-valve cavity, 32-valve port, 321-first valve port, 322-second valve port, 323-third valve port, 33-shell, 34-cover body, 341-protrusion, 35-valve foot, 36-water pipe interface, 361 -first water pipe interface, 362-second water pipe interface, 363-third water pipe interface, 37-rotating protrusion, 38-second limiting protrusion structure, 4-fixing frame, 41-accommodating chamber, 42-through port, 43-ring groove, 431-embedded groove structure, 44-clamping structure, 5-valve core, 51-flow channel, 52-flow channel port, 53-rotating shaft part, 54-rotating groove, 55-first limiting protrusion, 56-support part, 57-sealing part, 6-actuator, 7-first sealing ring, 8-gasket, 9-second sealing ring. DETAILED DESCRIPTION

[0036] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0037] Example

[0038] This embodiment provides a proportional control valve, which includes a valve housing 3, a fixing frame 4, a valve core 5 and a sealing assembly.

[0039] The valve housing 3 has a valve cavity 31 formed therein, and the circumferential sidewall of the valve housing 3 is provided with a plurality of valve ports 32 communicating with the valve cavity 31. The number of the valve ports 32 is not limited, and may be three, four, or more. Figures 1 to 6 In the preferred solution shown in the figure, the circumferential side wall of the valve housing 3 is provided with three valve ports 32 to form a three-way proportional control valve. In specific implementation, the number of valve ports 32 on the valve housing 3 can be adjusted according to design requirements to form proportional control valves with different numbers of ports. Next, the solution will be described by taking a three-way proportional control valve as an example.

[0040] The valve housing 3 preferably includes a shell 33 and a cover 34. The shell 33 has an inner cavity. One end of the shell 33 in the axial direction is provided with an opening communicating with the inner cavity. The cover 34 is fixedly arranged at the open end of the shell 33 so that the cover 34 and the shell 33 enclose the valve cavity 31. Figures 1 to 3The valve port 32 is arranged on the circumferential side wall of the housing 33 and communicates with the valve cavity 31. There are many ways to fix the cover 34 to the housing 33, such as Figure 3 In the preferred embodiment shown in the figure, the cover 34 is fixedly connected to the housing 33 by fasteners such as screws. The cover 34 can be used to fix and install driving components such as the actuator 6. The housing 33 is provided with a valve foot 35 at one end close to the cover 34, which can be conveniently fixed to the mounting surface.

[0041] The valve port 32 is provided with a water pipe interface 36, and the three water pipe interfaces 36 are distributed in a "Y" shape along the circumferential direction of the housing 33. Figures 4 to 6 As shown. In order to more conveniently describe the technical solution, the three valve ports 32 are defined as the first valve port 321, the second valve port 322 and the third valve port 323. Preferably, the angle A1 between the axis of the first valve port 321 and the axis of the second valve port 322 and the angle A2 between the axis of the first valve port 321 and the axis of the third valve port 323 are 110° respectively, and the angle A3 between the axis of the second valve port 322 and the axis of the third valve port 323 is 140°. Figure 6 As shown. The first water pipe interface 361 provided on the first valve port 321 extends outwardly along the axis direction of the first valve port 321; the second water pipe interface 362 provided on the second valve port 322 extends in a direction away from the first water pipe interface 361 along the axis direction of the first valve port 321; the third water pipe interface 363 provided on the third valve port 323 extends in a direction away from the first water pipe interface 361 along the axis direction of the first valve port 321, that is, the axes of the outlet ends of the three water pipe interfaces 36 are arranged in parallel. The opening angle B1 of the first valve port 321 in the circumferential direction of the shell 33 is 53°, the opening angle B2 of the second valve port 322 in the circumferential direction of the shell 33, and the opening angle B3 of the third valve port 323 in the circumferential direction of the shell 33 are 54° respectively.

[0042] The fixing frame 4 is disposed in the valve cavity 31, and a receiving cavity 41 is formed in the fixing frame 4. A through hole 42 communicating with the receiving cavity 41 is disposed on the fixing frame 4 at a position corresponding to the valve port 32. Figure 7 As shown, the fixing frame 4 is in a hollow cylindrical shape, and three through openings 42 are arranged on the side wall of the fixing frame 4 along the circumferential direction. The angle between the axes of the through openings 42 is preferably the same as the angle between the axes of the valve ports 32. Figure 8 The fixing frame 4 is fixedly disposed in the valve cavity 31, and the axial direction of the fixing frame 4 is consistent with the axial direction of the housing 33. Figure 7As shown in the figure, a preferred solution is schematically shown, preferably, a convex structure 44 is provided at one end of the fixing frame 4, and the convex structure 44 on the fixing frame 4 is embedded in the inner wall of the end of the shell 33 away from the opening, so as to form a limit in the circumferential direction of the fixing frame 4, which can prevent the fixing frame 4 from rotating in the circumferential direction. Further preferably, the inner wall of the cover body 34 is provided with a protrusion 341, and the protrusion 341 is inserted into the inner cavity of the shell 33, as shown in FIG. Figure 3 A first sealing ring 7 may be sleeved on the outer edge of one end of the protrusion 341 facing the fixing frame 4 , thereby forming a seal between the cover 34 and the housing 33 .

[0043] The valve core 5 is rotatably disposed in the accommodating chamber 41, and the axial direction of the valve core 5 is consistent with the axial direction of the valve housing 3. A flow channel 51 is disposed in the valve core 5, and a flow channel opening 52 communicating with the flow channel 51 is disposed on the circumferential side wall of the valve core 5. Fig. 9 and Fig.10 As shown, preferably, the valve core 5 is columnar, and one end of the valve core 5 facing the cover body 34 is provided with a shaft portion 53, and the shaft portion 53 passes through the cover body 34 to the outside of the valve housing 3, as shown in FIG. Figure 3 As shown. The valve core 5 can be driven to rotate circumferentially in the valve cavity 31 by driving the rotating shaft portion 53 to rotate through a driving device such as an actuator 6. Further preferably, the end of the rotating shaft portion 53 is arranged in a spline shape, which can be easily assembled with the spline groove of the driving shaft of the actuator 6. In order to prevent leakage between the rotating shaft portion 53 and the cover body 34, a gasket 8 and a second sealing ring 9 can be sleeved on the rotating shaft portion 53 to achieve sealing with the cover body 34. Since this part of the structure is a prior art and it is not the focus of protection of this application, it will not be described in detail in this embodiment.

[0044] The end of the valve core 5 away from the cover body 34 is rotatably connected to the inner wall of the end of the housing 33 away from the opening. Figure 3 and Fig.10 A preferred solution schematically shown in the figure is that a rotation groove 54 is provided at the end of the valve core 5 away from the cover body 34, and a rotation protrusion 37 matching the rotation groove 54 is provided on the inner wall of the end of the shell 33 away from the opening, and the rotation protrusion 37 cooperates with the rotation groove 54 to achieve a rotatable connection between the end of the valve core 5 away from the cover body 34 and the inner wall of the end of the shell 33 away from the opening. Of course, the above is only a preferred solution. In other embodiments, a rotation protrusion 37 may be provided at the end of the valve core 5 away from the cover body 34, and a rotation groove 54 matching the rotation protrusion 37 may be provided on the inner wall of the end of the shell 33 away from the opening, and the same technical effect can also be achieved.

[0045] In a further embodiment, a first limiting protrusion 55 structure may be provided at one end of the valve core 5 facing the cover body 34, such as Fig. 9 As shown, a second limiting protrusion structure 38 is provided on the side of the cover body 34 facing the valve core 5, as shown in FIG. Fig.11 The second limiting protrusion structure 38 is located on the circumferential side of the first limiting protrusion 55 structure, thereby limiting the rotation angle of the valve core 5 .

[0046] Fig. 9 and Fig.10 The valve core 5 of the three-way proportional control valve shown in the figure has two flow passages 52 on the circumferential side wall of the valve core 5, and the two flow passages 52 are connected through a flow passage 51. The valve core portion between the two flow passages 52 is defined as a support portion 56 and a sealing portion 57, respectively. Preferably, the opening angle C of the two circumferential ends of the sealing portion 57 in the circumferential direction of the housing 33 is 102°, as shown in FIG. Figure 6 shown.

[0047] The sealing assembly is embedded in the fixing frame 4 and is arranged around the periphery of the through opening 42. The sealing assembly includes a lip seal ring 1 and a support frame 2. The lip seal ring 1 has a ring hole 2. The lip seal ring 1 has an inner end side 12 and an outer end side 13 along its axial direction. The lip opening 14 of the lip seal ring 1 is arranged on the inner end side 12. The outer end side 13 is provided with a sealing rib 15. The sealing rib 15 is arranged around the periphery of the ring hole 2. Fig.12 and Fig.13 As shown in the figure, a preferred solution is schematically shown, in which three coaxially arranged annular sealing ribs 15 with different diameters are arranged on the outer end side 13, that is, three circles of the sealing ribs 15 are arranged on the periphery of the ring opening. Of course, in the specific implementation, the number of the sealing ribs 15 is not limited to three, and can be one, two, four or more. The support frame 2 is annular, such as Fig.14 The support frame 2 is embedded in the ring hole 2 of the lip seal ring 1, and the axial direction of the support frame 2 is the same as the axial direction of the lip seal ring 1. Fig.15 The outer end side 13 of the lip seal ring 1 faces the valve housing 3, and the lip seal ring 1 is in contact and sealed with the valve housing 3 and the valve core 5, respectively. Figure 3 and Figure 6 shown.

[0048] In a further preferred embodiment, a circular groove 43 is preferably provided on the outer wall of the fixing frame 4, and the circular groove 43 is arranged around the periphery of the through opening 42. Figure 7The outer lip of the lip seal ring 1 is embedded in the ring groove 43, and the inner lip of the lip seal ring 1 is in contact with the valve core 5 through the through opening 42. Figure 6 shown. Fig.12 and Fig.13 A preferred solution is schematically shown in FIG. 1 , in which two embedded protrusion structures 16 are provided on the circumferential side wall of the lip seal ring 1, and a matching embedded groove structure 431 is provided on the outer groove wall of the groove 43 corresponding to the embedded protrusion structure 16 on the lip seal ring 1, as shown in FIG. Figure 7 As shown, the positioning and installation between the lip seal ring 1 and the fixing frame 4 can be achieved by the cooperation between the embedded protrusion structure 16 and the embedded groove structure 431. Of course, the above is only a preferred embodiment. In the specific implementation, the number of the embedded protrusion structure 16 on the lip seal ring 1 is not limited to two, and can be one, three, four or more. In other embodiments, the embedded protrusion structure 16 can be set on the outer ring groove wall of the ring groove 43, and the embedded groove structure 431 can be set on the circumferential side wall of the lip seal ring 1; or both the embedded protrusion structure 16 and the embedded groove structure 431 are set on the outer ring groove wall of the ring groove 43 and the circumferential side wall of the lip seal ring 1.

[0049] In a further preferred embodiment, the hole wall of the circle hole 2 is provided with a first groove structure 111, such as Fig.12 and Fig.13 As shown, the circumferential side wall of the support frame 2 is provided with a first protruding structure 21 corresponding to the first groove structure 111. Fig.14 As shown, the support frame 2 is embedded in the circle hole 2 through the cooperation of the first protrusion structure 21 and the first groove structure 111. Fig.15 shown. Fig.13 and Fig.14 A preferred solution is schematically shown in FIG. 1 , in which two first groove structures 111 are arranged on the hole wall of the ring hole 2, and two matching first protrusion structures 21 are arranged on the circumferential side wall of the support frame 2 corresponding to the first groove structures 111 on the hole wall of the ring hole 2. The positioning and installation between the support frame 2 and the lip seal ring 1 can be achieved through the cooperation between the first protrusion structures 21 and the first groove structures 111. Further preferably, the first groove structure 111 passes through the outer end side 13 of the lip seal ring 1, as shown in FIG. Fig.12As shown, the support frame 2 can be conveniently embedded into the circle hole 2 of the lip seal ring 1 from the outer end side 13 of the lip seal ring 1. Of course, the above is only a preferred embodiment. In the specific implementation, the number of the first groove structure 111 on the hole wall of the circle hole 2 is not limited to two, and can be one, three, four or more. In addition, in other embodiments, a second protrusion structure can be provided on the hole wall of the circle hole 2, and a second groove structure is provided at the circumferential side wall of the support frame 2 corresponding to the second protrusion structure, and the support frame 2 is embedded in the circle hole 2 through the second groove structure and the second protrusion structure. The support frame 2 has a first end side 22 and a second end side 23 along its axial direction, and the first end side 22 corresponds to the inner end side 12. The second groove structure preferably runs through the first end side 22, so that the support frame 2 can be conveniently embedded into the circle hole 2 of the lip seal ring 1 from the outer end side 13 of the lip seal ring 1. Of course, in other embodiments, both the first groove structure 111 and the second protrusion structure may be provided on the hole wall of the circle hole 2, and both the first protrusion structure 21 and the second groove structure may be provided on the circumferential side wall of the support frame 2.

[0050] Through the above design, when the proportional control valve is in a high-pressure environment and the fluid impacts the lip seal ring 1, the support frame 2 can play a role in supporting the lip seal ring 1, thereby greatly improving the sealing performance of the proportional control valve in a high-pressure environment. Of course, in other embodiments, the support frame 2 can also be fixed in the lip seal ring 1 through a secondary injection molding process, thereby achieving the purpose of increasing the pressure resistance of the proportional control valve while simplifying the process equipment process, thereby reducing production costs.

[0051] Next, take the above three-way proportional control valve as an example, and combine Figures 16 to 18 A brief introduction to its working mode:

[0052] like Fig.16 As shown in the figure, the positional relationship between the valve core 5 and the valve housing 3 and other internal components of the three-way proportional control valve in the working mode 1 state is shown. In this working state, only the first water pipe interface 361 and the second water pipe interface 362 are connected, and the lip seal ring 1 at the third water pipe interface 363, its inner end side 12 is completely in contact with the sealing part 57 of the valve core 5 to achieve sealing, that is, the coolant enters the valve housing 3 from the first water pipe interface 361 and all flows out from the second water pipe interface 362, and the flow rate at the third water pipe interface 363 is 0.

[0053] like Fig.17As shown in the figure, the positional relationship between the valve core 5 and the valve housing 3 and other internal components of the three-way proportional control valve in a typical state of working mode 2 is shown. The valve core 5 rotates until its support portion 56 is located at the middle position of the first valve port 321. In this working state, the first water pipe interface 361 is connected with the second water pipe interface 362 and the third water pipe interface 363 respectively, that is, after the coolant enters the valve housing 3 from the first water pipe interface 361, a part of it flows out from the second water pipe interface 362, and the other part flows out from the third water pipe interface 363. In the process of switching from the above-mentioned mode 1 to the above-mentioned mode 2, the flow rate of the second water pipe interface 362 decreases from 100% to 50%, and the flow rate of the third water pipe interface 363 increases from 0 to 50%, and the flow rate ratio between the second water pipe interface 362 and the third water pipe interface 363 is 1:1.

[0054] like Fig.18 As shown in the figure, the positional relationship between the valve core 5 and the valve housing 3 and other internal components of the three-way proportional regulating valve in the working mode 3 is shown. In this working state, only the first water pipe interface 361 and the third water pipe interface 363 are connected, and the lip seal ring 1 at the second water pipe interface 362, its inner end side 12 is completely in contact with the sealing part 57 of the valve core 5 to achieve sealing, that is, the coolant flows out from the third water pipe interface 363 after entering the valve housing 3 from the first water pipe interface 361, and the flow rate at the second water pipe interface 362 is 0. In the process of switching from the above-mentioned mode 2 to the above-mentioned mode 3, the flow rate of the second water pipe interface 362 decreases from 50% to 0, and the flow rate of the third water pipe interface 363 increases from 50% to 100%.

[0055] Compared with the prior art, the sealing assembly and proportional control valve of the present application have at least one or more of the following beneficial effects:

[0056] The sealing assembly and proportional control valve of the present application are provided with a support frame inside the lip seal ring for support. Compared with the traditional soft sealing method, the sealing performance between the sealing assembly and the valve housing and the valve core is greatly improved. After testing, the sealing performance between the lip seal ring and the valve housing and the valve core is enhanced from close to 0 leakage under 160Kpa environment to fully meet the 0 leakage requirement under 350Kpa environment; the sealing assembly has a simple structure and is easy to assemble.

[0057] In this document, the terms "comprises," "comprising," or any other variations thereof, are intended to cover a non-exclusive inclusion of elements other than those listed and may also include additional elements not expressly listed.

[0058] In this document, the directional words such as front, back, top, and bottom are defined by the positions of the components in the drawings and the positions of the components relative to each other, and are only for the sake of clarity and convenience in expressing the technical solution. It should be understood that the use of the directional words should not limit the scope of protection claimed in this application.

[0059] In the absence of conflict, the above embodiments and features in the embodiments may be combined with each other.

[0060] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A sealing assembly, characterized in that: The invention comprises a lip seal ring (1) and a support frame (2), wherein the lip seal ring (1) has a ring hole (11), and the lip seal ring (1) has an inner end side (12) and an outer end side (13) along its axial direction, a lip opening (14) of the lip seal ring (1) is arranged on the inner end side (12), and a sealing rib (15) is arranged on the outer end side (13), and the sealing rib (15) is arranged around the periphery of the ring hole (11), and the support frame (2) is annular, and the support frame (2) is embedded in the ring hole (11) of the lip seal ring (1), and the axial direction of the support frame (2) is the same as the axial direction of the lip seal ring (1).

2. The sealing assembly according to claim 1, characterized in that: The hole wall of the circle hole (11) is provided with a first groove structure (111), and the circumferential side wall of the support frame (2) is provided with a first protrusion structure (21) corresponding to the first groove structure (111), and the support frame (2) is embedded in the circle hole (11) through the first protrusion structure (21) and the first groove structure (111).

3. The sealing assembly according to claim 2, characterized in that: The first groove structure (111) passes through the outer end side (13) of the lip seal ring (1).

4. The sealing assembly according to claim 1, characterized in that: The hole wall of the circle hole (11) is provided with a second protrusion structure, and the circumferential side wall of the support frame (2) is provided with a second groove structure corresponding to the second protrusion structure, and the support frame (2) is embedded in the circle hole (11) through the cooperation of the second groove structure and the second protrusion structure.

5. The sealing assembly according to claim 4, characterized in that: The support frame (2) has a first end side (22) and a second end side (23) along its axial direction, the first end side (22) corresponds to the inner end side (12), and the second groove structure passes through the first end side (22).

6. The sealing assembly according to claim 1, characterized in that The outer end side (13) is provided with a plurality of sealing ribs (15) which are coaxially arranged but have different diameters.

7. The sealing assembly according to claim 1, characterized in that: A plurality of embedded protrusion structures (16) and / or embedded groove structures (431) are provided on the circumferential side wall of the lip seal ring (1).

8. A proportional control valve, characterized in that: It comprises a valve housing (3), a fixing frame (4), a valve core (5) and a sealing assembly as described in any one of claims 1 to 7, wherein a valve cavity (31) is formed in the valve housing (3), a circumferential side wall of the valve housing (3) is provided with a plurality of valve ports (32) communicating with the valve cavity (31), the fixing frame (4) is arranged in the valve cavity (31), an accommodating cavity (41) is formed in the fixing frame (4), a through port (42) communicating with the accommodating cavity (41) is provided on the fixing frame (4) at a position corresponding to the valve port (32), and the valve core (5) is rotatable. The valve core (5) is arranged in the accommodating cavity (41), the axial direction of the valve core (5) is consistent with the axial direction of the valve housing (3), a flow channel (51) is arranged in the valve core (5), and a flow channel opening (52) communicating with the flow channel (51) is arranged on the circumferential side wall of the valve core (5), the sealing component is embedded in the fixing frame (4) and is arranged around the periphery of the through opening (42), the outer end side (13) of the lip seal ring (1) faces the valve housing (3), and the lip seal ring (1) is respectively abutted and sealed against the valve housing (3) and the valve core (5).

9. The proportional control valve according to claim 8, characterized in that: A circular groove (43) is provided on the outer wall of the fixing frame (4), and the circular groove (43) is arranged around the periphery of the through opening (42). The outer lip of the lip seal ring (1) is embedded in the circular groove (43), and the inner lip of the lip seal ring (1) abuts against the valve core (5) through the through opening (42).

10. The proportional control valve according to claim 9, characterized in that: A matching embedded groove structure (431) is provided on the outer ring groove wall of the ring groove (43) at a position corresponding to the embedded protrusion structure (16) provided on the circumferential side wall of the lip seal ring (1); and / or A matching embedded protrusion structure (16) is provided on the outer ring groove wall of the ring groove (43) at a location corresponding to the embedded groove structure (431) provided on the circumferential side wall of the lip seal ring (1).

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