Portable combined sealing oil seal

Abstract

The invention discloses a portable combined sealing oil seal which comprises a first sealing body and a second sealing body, the first sealing body comprises a first reinforcing ring, a first elastic body and a first clamping part, the first elastic body abuts against a rotating shaft, and the first clamping part is arranged on one side of the first elastic body; the second sealing body comprises a second reinforcing ring, a second elastic body and a second clamping part, the second elastic body abuts against the rotating shaft, the second clamping part is arranged on the side, facing the second elastic body, of the second elastic body, and the first clamping part is clamped to the second clamping part so that the first sealing body can be connected with the second sealing body in a clamped mode. According to the portable combined sealing oil seal, through clamping matching of the first clamping part and the second clamping part, combination can be completed only by buckling the first sealing body on the second sealing body and then twisting the first sealing body, compared with press-fit combination of a conventional combined oil seal, time and labor are saved, meanwhile, assembling equipment and assembling clamps are not needed, the oil seal form change is simple, and the assembling efficiency is improved. And the production and manufacturing cost of the oil seal is effectively controlled.

Description

Technical Field

[0001] The invention belongs to the technical field of oil seals, and in particular relates to a convenient combined sealing oil seal. Background Art

[0002] Combined oil seal is a sealing device composed of multiple sealing elements, which is mainly used to prevent lubricating oil leakage and prevent external pollutants from entering mechanical equipment. It is usually composed of elastic materials (such as rubber) and metal skeletons, and is suitable for sealing needs under complex working conditions.

[0003] In the existing combined oil seal combination scheme, the installation of the oil seal usually requires the configuration of special equipment for press fitting. Due to the complex structure of the oil seal, there are problems such as time-consuming and labor-intensive assembly and high assembly cost during assembly, which urgently need to be solved. Summary of the invention

[0004] The purpose of the present invention is to provide a convenient combined sealing oil seal to solve the problem that the conventional installation method of the combined oil seal in the prior art is time-consuming and labor-intensive.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] A convenient combined sealing oil seal, the convenient combined sealing oil seal sleeve is arranged on a rotating shaft, the convenient combined sealing oil seal is configured to seal the annular gap between the rotating shaft and the housing, and comprises a detachable first sealing body and a second sealing body, wherein: the first sealing body comprises a first reinforcement ring, a first elastic body and a first clamping portion, the first reinforcement ring is annular, the first elastic body is annularly abutted against the outer periphery of the rotating shaft and arranged on the inner periphery of the first reinforcement ring, and the first clamping portion is circumferentially arranged on a side of the first elastic body facing the second sealing body;

[0007] The second sealing body includes a second reinforcement ring, a second elastomer and a second clamping portion. The second reinforcement ring is annular. The second elastomer is annularly abutted against the outer periphery of the rotating shaft and is arranged on the inner periphery of the second reinforcement ring. The second clamping portion is circumferentially arranged on the side of the second elastomer facing the first sealing body. The first clamping portion is clamped on the second clamping portion so that the first sealing body is clamped and connected to the second sealing body.

[0008] Furthermore, the first clamping portion includes a plurality of arc-shaped first clamping members, which are evenly distributed on the first elastic body along the circumferential direction, the first end of the first clamping member is fixedly set on the first elastic body, and the second end of the first clamping member has a first hook extending inward.

[0009] Furthermore, the second clamping portion includes a second clamping piece circumferentially disposed on the second elastic body, a first end of the second clamping piece is fixedly disposed on the inner circumference of the second elastic body, and a second hook body is extended outwardly from the second end of the second clamping piece;

[0010] After a plurality of the first clamping members are clamped with the second clamping members, the first hook body abuts against the second hook body, thereby forming a mutually meshing clamping structure.

[0011] Furthermore, a lip is formed between the first elastomer, the second elastomer and the outer cylindrical surface of the rotating shaft, and two adjacent first clamping parts are spaced apart to form a first gap, and the first gap is connected to the lip. A plurality of second gaps are provided on the side of the second elastomer close to the outer shell, and an atmosphere-opening hole is provided through the outer shell. Each of the second gaps is connected to the outside world through the atmosphere-opening hole, and the negative pressure air in the lip passes through the first gap and is discharged from the second gap to the atmosphere-opening hole, and is discharged to the outside world through the atmosphere-opening hole.

[0012] Furthermore, the first reinforcement ring includes a first outer peripheral portion, a flange portion and a first inner peripheral portion, wherein:

[0013] The first outer peripheral portion extends along the axial direction of the rotating shaft and is connected to the first end of the flange portion, the first outer peripheral portion abuts against the inner surface of the outer shell, the first inner peripheral portion extends along the radial direction of the rotating shaft and is connected to the second end of the flange portion, and the flange portion is annularly sleeved on the outside of the rotating shaft and is arranged between the first outer peripheral portion and the first inner peripheral portion.

[0014] Furthermore, the second reinforcement ring includes a second outer peripheral portion and a second inner peripheral portion, the second inner peripheral portion is annular and extends radially along the shaft, and the second outer peripheral portion extends along the axial direction of the shaft and is connected to a side of the second inner peripheral portion away from the shaft.

[0015] Furthermore, the cross-sections of the second outer peripheral portion and the second inner peripheral portion are in an "L"-shaped structure.

[0016] Furthermore, the first elastomer includes a first elastic base and a first sealing lip, the first elastic base is attached to the end of the inner peripheral side of the first reinforcement ring, one end of the first sealing lip is integrally connected to the first elastic base, the end of the first sealing lip away from the first elastic base extends toward the outer peripheral side of the rotating shaft and abuts against the outer peripheral surface of the rotating shaft, the first sealing lip has a first lip front end portion and a first lip waist portion, the first lip front end portion has a first annular surface protruding toward the outer periphery of the rotating shaft, and the first lip waist portion is located between the first elastic base and the first annular surface of the first lip front end portion.

[0017] Furthermore, the second elastomer includes a second elastic base and a second sealing lip, the second elastic base is attached to the end of the inner circumference of the second reinforcement ring, one end of the second sealing lip is integrally connected to the second elastic base, the end of the first sealing lip away from the second elastic base extends toward the outer circumference of the rotating shaft and abuts against the outer circumference of the rotating shaft, the second sealing lip has a second lip front end and a second lip waist, the second lip front end has a second annular surface protruding toward the outer circumference of the rotating shaft, and the second lip waist is located between the second elastic base and the second annular surface of the second lip front end.

[0018] Furthermore, the outer peripheral side of the first sealing lip has an annular first recessed portion recessed toward the inner peripheral side for accommodating a clamping spring, and the first recessed portion is arranged opposite to the front end portion of the first lip;

[0019] The outer peripheral side of the second sealing lip has an annular second recessed portion recessed toward the inner peripheral side for accommodating a garter spring, and the second recessed portion is arranged opposite to the front end portion of the second lip.

[0020] Compared with the prior art, the convenient combined sealing oil seal has the following beneficial effects:

[0021] 1) Through the clamping cooperation between the first clamping part and the second clamping part, the first sealing body can be assembled by simply buckling the first sealing body onto the second sealing body and twisting the first sealing body. Compared with the conventional combined oil seal press-fit assembly, it saves time and effort, and does not require assembly equipment and assembly fixtures. The oil seal form is easy to change, and the production and manufacturing cost of the oil seal is effectively controlled;

[0022] 2) By setting the first clamping part as a plurality of arc-shaped first clamping parts uniformly distributed along the circumferential direction, the clamping structure is evenly distributed, and the stability and reliability of the connection can be ensured when clamping with the second sealing body, thereby improving the connection effect of the overall sealing oil seal. The corresponding structure of the second clamping part cooperates with the first clamping part, and the first hook body and the second hook body abut against each other to form a mutually meshing clamping structure, which further enhances the firmness of the clamping between the first sealing body and the second sealing body and ensures the sealing effect;

[0023] 3) By setting the adjacent first clamping parts at intervals to form a first gap, and cooperating with the second gap on the second elastomer and the atmosphere open hole on the outer shell, a complete set of negative pressure air exhaust channels is constructed, so that the negative pressure air between the lips can pass through the first gap and the second gap in an orderly manner and then be discharged to the outside from the atmosphere open hole, which helps to maintain a reasonable air pressure state inside the sealing oil seal and avoid affecting the sealing effect due to abnormal air pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate and understand the technical solutions in the embodiments of the present invention, the following briefly introduces the background technology of the present invention and the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0025] Figure 1 It is a schematic cross-sectional structural diagram of a portable combined sealing oil seal provided by an embodiment of the present invention on one side relative to the axis;

[0026] Figure 2 is a schematic cross-sectional structural diagram of a first sealing body provided by an embodiment of the present invention;

[0027] Figure 3 It is a schematic cross-sectional structural diagram of a second sealing body provided by an embodiment of the present invention.

[0028] Figures 1 to 3 The following reference numerals are included:

[0029] Axis 10, lip 11;

[0030] Housing 20, atmosphere opening hole 21;

[0031] The first sealing body 30, the first reinforcing ring 31, the first outer peripheral portion 310, the flange portion 311, the first inner peripheral portion 312, the first elastic body 32, the first elastic base 320, the first sealing lip 321, the first lip front end portion 321a, the first lip waist portion 321b, the first annular surface 321c, the third annular surface 322, the first clamping portion 33, the first clamping member 330, the first hook body 331, and the first gap 332;

[0032] The second sealing body 40, the second reinforcing ring 41, the second outer peripheral portion 410, the second inner peripheral portion 411, the second elastic body 42, the second elastic base 420, the second sealing lip 421, the second lip front end portion 421a, the second lip waist portion 421b, the second annular surface 421c, the fourth annular surface 422, the second clamping portion 43, the second clamping member 430, the second hook body 431, and the second gap 432;

[0033] Clamping spring 50, first recessed portion 51, second recessed portion 52; DETAILED DESCRIPTION

[0034] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0035] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. Preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly and comprehensively understood. It should be noted that when a component is referred to as "fixed to" another component, it can be directly on the other component or there can also be a central component. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for illustrative purposes and are not intended to be the only implementation method. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by technicians in the technical field of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0036] Hereinafter, the embodiments of the present application will be described with reference to the accompanying drawings:

[0037] It should be noted that: for the sake of convenience, on the axis x (refer to Figure 1 ) direction, and move arrow a (refer to Figure 1 and Figure 3 ) direction is set as the outer side, and in the axis x direction, the arrow b (refer to Figure 1 and Figure 2 ) direction is set as the inner side. The inner side becomes the sealing object side. In addition, in the direction perpendicular to the axis x (hereinafter also referred to as the "radial direction"), the direction away from the axis x is set as the outer peripheral side, and the direction close to the axis x is set as the inner peripheral side.

[0038] See also Figure 1 As shown, in the embodiment of the present application, a convenient combined sealing oil seal is provided on the rotating shaft 10 (the axis of the rotating shaft 10 is Figure 1 On the axis x) in the figure, the above-mentioned convenient combined sealing oil seal is configured to seal the annular gap between the rotating shaft 10 and the housing 20.

[0039] See also Figures 1 to 3As shown, in the embodiment of the present application, a convenient combined sealing oil seal includes a detachable first sealing body 30 and a second sealing body 40, wherein: the first sealing body 30 includes a first reinforcement ring 31, a first elastic body 32 and a first clamping portion 33, the first reinforcement ring 31 is annular, the first elastic body 32 is annularly abutted against the outer periphery of the rotating shaft 10 and is arranged on the inner peripheral side of the first reinforcement ring 31, and the first clamping portion 33 is circumferentially arranged on the side of the first elastic body 32 facing the second sealing body 40; the second sealing body 40 includes a second reinforcement ring 41, a second elastic body 42 and a second clamping portion 43, the second reinforcement ring 41 is annular, the second elastic body 42 is annularly abutted against the outer periphery of the rotating shaft 10 and is arranged on the inner peripheral side of the second reinforcement ring 41, the second clamping portion 43 is circumferentially arranged on the side of the second elastic body 42 facing the first sealing body 30, and the first clamping portion 33 is clamped on the second clamping portion 43, so that the first sealing body 30 is clamped and connected with the second sealing body 40.

[0040] It can be seen that through the snap-fit ​​cooperation of the first snap-fit ​​portion 33 and the second snap-fit ​​portion 43, the combination can be completed by simply buckling the first sealing body 30 onto the second sealing body 40 and then twisting the first sealing body 30. Compared with the conventional combined oil seal press-fit combination, it saves time and effort, and at the same time does not require assembly equipment and assembly fixtures. The oil seal form can be easily changed, which effectively controls the production and manufacturing cost of the oil seal.

[0041] As an embodiment, the first clamping portion 33 includes a plurality of arc-shaped first clamping members 330, and the plurality of first clamping members 330 are evenly distributed on the first elastic body 32 along the circumferential direction. The first end of the first clamping member 330 is fixedly disposed on the first elastic body 32, and the second end of the first clamping member 330 has a first hook body 331 extending inward.

[0042] As an embodiment, the second clamping portion 43 includes a second clamping member 430 circumferentially opened on the second elastic body 42, the first end of the second clamping member 430 is fixedly arranged on the inner circumferential side of the second elastic body 42, and the second end of the second clamping member 430 has a second hook body 431 extending outward; after several first clamping members 330 are clamped with the second clamping members 430, the first hook body 331 and the second hook body 431 are abutted against each other, thereby forming a mutually meshing clamping structure.

[0043] It can be seen that by setting the first clamping part 33 as a plurality of arc-shaped first clamping parts 330 uniformly distributed along the circumferential direction, the clamping structure is evenly distributed, which can ensure the stability and reliability of the connection when clamping with the second sealing body 40, and improve the connection effect of the overall sealing oil seal. The corresponding structure of the second clamping part 43 cooperates with the first clamping part 33, and the first hook body 331 and the second hook body 431 abut against each other to form a mutually meshing clamping structure, which further enhances the firmness of the clamping between the first sealing body 30 and the second sealing body 40 and ensures the sealing effect.

[0044] As an embodiment, a lip 11 is formed between the first elastomer 32, the second elastomer 42 and the outer cylindrical surface of the rotating shaft 10, and two adjacent first clamping parts 330 are arranged at intervals to form a first gap 332, and the first gap 332 is connected to the lip 11. A plurality of second gaps 432 are opened on the side of the second elastomer 42 close to the outer shell 20, and an atmospheric opening hole 21 is opened through the outer shell 20. Each second gap 432 is connected to the outside through the atmospheric opening hole 21, and the negative pressure air in the lip 11 passes through the first gap 332 and is discharged to the atmospheric opening hole 21 from the second gap 432, and is discharged to the outside through the atmospheric opening hole 21.

[0045] Specifically, four first clamping members 330 are provided, and the four first clamping members 330 are arranged at intervals along the circumferential direction to form four first gaps 332 .

[0046] Specifically, the number of the second gaps 432 on the second elastic body 42 is not less than the number of the first clamping members 330 .

[0047] It can be seen that by spacing adjacent first clamping parts 330 to form a first gap 332, and cooperating with the second gap 432 on the second elastomer 42 and the atmosphere open hole 21 on the outer shell 20, a complete set of negative pressure air exhaust channels is constructed, so that the negative pressure air in the lip 11 can pass through the first gap 332 and the second gap 432 in an orderly manner and then be discharged from the atmosphere open hole 21 to the outside, which helps to maintain a reasonable air pressure state inside the sealing oil seal and avoid affecting the sealing effect due to abnormal air pressure.

[0048] As an embodiment, the first reinforcement ring 31 includes a first outer peripheral portion 310, a flange portion 311 and a first inner peripheral portion 312, wherein: the first outer peripheral portion 310 extends along the axis x direction of the rotating shaft 10 and is connected to the first end of the flange portion 311, the first outer peripheral portion 310 abuts against the inner surface of the outer shell 20, the first inner peripheral portion 312 extends along the radial direction of the rotating shaft 10 and is connected to the second end of the flange portion 311, and the flange portion 311 is annularly sleeved on the outer side of the rotating shaft 10 and is arranged between the first outer peripheral portion 310 and the first inner peripheral portion 312.

[0049] As an embodiment, the second reinforcement ring 41 includes a second outer peripheral portion 410 and a second inner peripheral portion 411, the second inner peripheral portion 411 is annular and extends radially along the rotating shaft 10, the second outer peripheral portion 410 extends along the axis x direction of the rotating shaft 10 and is connected to the side of the second inner peripheral portion 411 away from the rotating shaft 10.

[0050] Specifically, the first reinforcement ring 31 and the second reinforcement ring 41 are made of metal and are manufactured by stamping and forging. The first elastomer 32 and the second elastomer 42 are set to rubber materials such as fluororubber and acrylic rubber, and are formed by cross-linking (vulcanization) using a forming mold.

[0051] As an implementation manner, the cross-sections of the second outer peripheral portion 410 and the second inner peripheral portion 411 are in an “L”-shaped structure.

[0052] As an embodiment, the first elastomer 32 includes a first elastic base 320 and a first sealing lip 321. The first elastic base 320 is attached to the end of the inner peripheral side of the first reinforcement ring 31. One end of the first sealing lip 321 is integrally connected to the first elastic base 320. The first sealing lip 321 extends toward the outer peripheral side of the rotating shaft 10 at one end away from the first elastic base 320 and abuts against the outer peripheral surface of the rotating shaft 10. The first sealing lip 321 has a first lip front end portion 321a and a first lip waist portion 321b. The first lip front end portion 321a has a first annular surface 321c protruding toward the outer periphery of the rotating shaft 10. The first lip waist portion 321b is located between the first elastic base 320 and the first annular surface 321c of the first lip front end portion 321a.

[0053] As an embodiment, the second elastomer 42 includes a second elastic base 420 and a second sealing lip 421. The second elastic base 420 is attached to the end of the inner peripheral side of the second reinforcement ring 41. One end of the second sealing lip 421 is integrally connected to the second elastic base 420. The first sealing lip 321 extends toward the outer peripheral side of the rotating shaft 10 at one end away from the second elastic base 420 and abuts against the outer peripheral surface of the rotating shaft 10. The second sealing lip 421 has a second lip front end 421a and a second lip waist 421b. The second lip front end 421a has a second annular surface 421c protruding toward the outer periphery of the rotating shaft 10. The second lip waist 421b is located between the second elastic base 420 and the second annular surface 421c of the second lip front end 421a.

[0054] Specifically, the first lip waist 321b has a third annular surface 322, and the third annular surface 322 is reduced in diameter from the first elastic base 320 toward the first lip front end 321a in the axis x direction of the rotating shaft 10; the second lip waist 421b has a fourth annular surface 422, and the fourth annular surface 422 is reduced in diameter from the second elastic base 420 toward the second lip front end 421a in the axis x direction of the rotating shaft 10.

[0055] As an embodiment, the outer peripheral side of the first sealing lip 321 has an annular first recess 51 that is recessed toward the inner peripheral side and accommodates the clamping spring 50, and the first recess 51 is arranged to face away from the front end portion 321a of the first lip; the outer peripheral side of the second sealing lip 421 has an annular second recess 52 that is recessed toward the inner peripheral side and accommodates the clamping spring 50, and the second recess 52 is arranged to face away from the front end portion 421a of the second lip.

[0056] Obviously, the first recess 51 and the second recess 52 respectively provided on the outer peripheral sides of the first sealing lip 321 and the second sealing lip 421 can be used to accommodate the clamping spring 50. With the help of the elastic effect of the clamping spring 50, the tightness of the first sealing lip 321 and the second sealing lip 421 and the outer peripheral surface of the rotating shaft 10 can be further enhanced, thereby improving the sealing effect and more effectively preventing liquid, gas or other media from leaking from the annular gap between the rotating shaft 10 and the housing 20, thereby ensuring the sealing and reliability of the entire convenient combined sealing oil seal.

[0057] When assembling the above-mentioned convenient combined sealing oil seal, it is only necessary to buckle the first sealing body 30 onto the second sealing body 40, and then twist the first sealing body 30 to ensure that the first hook body 331 of the first sealing body 30 abuts against the second hook body 431 of the second sealing body 40, thereby forming a mutually meshing snap-fit ​​structure to complete the assembly.

[0058] The above embodiments are only to illustrate the basic principles and characteristics of the present invention. The present invention is not limited by the above examples. Without departing from the spirit and scope of the present invention, the present invention may be subject to various changes and modifications, which are within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A portable combined sealing oil seal, wherein the portable combined sealing oil seal sleeve is arranged on a rotating shaft, and the portable combined sealing oil seal is configured to seal an annular gap between the rotating shaft and a housing, characterized in that: The portable combined sealing oil seal comprises a detachable first sealing body and a second sealing body, wherein: The first sealing body comprises a first reinforcement ring, a first elastic body and a first clamping portion, the first reinforcement ring is annular, the first elastic body is annularly abutted against the outer circumference of the rotating shaft and is arranged on the inner circumference of the first reinforcement ring, and the first clamping portion is circumferentially arranged on a side of the first elastic body facing the second sealing body; The second sealing body includes a second reinforcement ring, a second elastomer and a second clamping portion. The second reinforcement ring is annular. The second elastomer is annularly abutted against the outer periphery of the rotating shaft and is arranged on the inner periphery of the second reinforcement ring. The second clamping portion is circumferentially arranged on the side of the second elastomer facing the first sealing body. The first clamping portion is clamped on the second clamping portion so that the first sealing body is clamped and connected to the second sealing body.

2. The portable combined sealing oil seal according to claim 1, characterized in that: The first clamping portion includes a plurality of arc-shaped first clamping members, which are uniformly distributed on the first elastic body along the circumferential direction. The first end of the first clamping member is fixedly arranged on the first elastic body, and the second end of the first clamping member has a first hook extending inward.

3. The portable combined sealing oil seal according to claim 2, characterized in that: The second clamping portion includes a second clamping piece circumferentially disposed on the second elastic body, a first end of the second clamping piece is fixedly disposed on the inner circumference of the second elastic body, and a second hook body is extended outwardly from the second end of the second clamping piece; After a plurality of the first clamping members are clamped with the second clamping members, the first hook body abuts against the second hook body, thereby forming a mutually meshing clamping structure.

4. The portable combined sealing oil seal according to claim 3, characterized in that: A lip is formed between the first elastomer, the second elastomer and the outer cylindrical surface of the rotating shaft, and two adjacent first clamping parts are arranged at intervals to form a first gap, and the first gap is connected to the lip. A plurality of second gaps are opened on the side of the second elastomer close to the outer shell, and an atmosphere-opening hole is opened through the outer shell. Each of the second gaps is connected to the outside world through the atmosphere-opening hole. The negative pressure air in the lip passes through the first gap and is discharged from the second gap to the atmosphere-opening hole, and is discharged to the outside world through the atmosphere-opening hole.

5. The portable combined sealing oil seal according to claim 1, characterized in that: The first reinforcement ring comprises a first outer peripheral portion, a flange portion and a first inner peripheral portion, wherein: The first outer peripheral portion extends along the axial direction of the rotating shaft and is connected to the first end of the flange portion, the first outer peripheral portion abuts against the inner surface of the outer shell, the first inner peripheral portion extends along the radial direction of the rotating shaft and is connected to the second end of the flange portion, and the flange portion is annularly sleeved on the outside of the rotating shaft and is arranged between the first outer peripheral portion and the first inner peripheral portion.

6. The portable combined sealing oil seal according to claim 1, characterized in that: The second reinforcement ring includes a second outer peripheral portion and a second inner peripheral portion, the second inner peripheral portion is annular and extends in the radial direction of the rotating shaft, and the second outer peripheral portion extends in the axial direction of the rotating shaft and is connected to a side of the second inner peripheral portion away from the rotating shaft.

7. The portable combined sealing oil seal according to claim 6, characterized in that: The cross-sections of the second outer peripheral portion and the second inner peripheral portion are in an "L"-shaped structure.

8. The portable combined sealing oil seal according to claim 1, characterized in that: The first elastomer includes a first elastic base and a first sealing lip, the first elastic base is attached to the end of the inner peripheral side of the first reinforcement ring, one end of the first sealing lip is integrally connected to the first elastic base, the end of the first sealing lip away from the first elastic base extends toward the outer peripheral side of the rotating shaft and abuts against the outer peripheral surface of the rotating shaft, the first sealing lip has a first lip front end portion and a first lip waist portion, the first lip front end portion has a first annular surface protruding toward the outer periphery of the rotating shaft, and the first lip waist portion is located between the first elastic base and the first annular surface of the first lip front end portion.

9. The portable combined sealing oil seal according to claim 8, characterized in that: The second elastomer includes a second elastic base and a second sealing lip, the second elastic base is attached to the end of the inner circumference of the second reinforcement ring, one end of the second sealing lip is integrally connected to the second elastic base, the end of the first sealing lip away from the second elastic base extends toward the outer circumference of the rotating shaft and abuts against the outer circumference of the rotating shaft, the second sealing lip has a second lip front end and a second lip waist, the second lip front end has a second annular surface protruding toward the outer circumference of the rotating shaft, and the second lip waist is located between the second elastic base and the second annular surface of the second lip front end.

10. The portable combined sealing oil seal according to claim 9, characterized in that: The outer peripheral side of the first sealing lip has an annular first recessed portion recessed toward the inner peripheral side for accommodating a clamping spring, and the first recessed portion is arranged opposite to the front end portion of the first lip; The outer peripheral side of the second sealing lip has an annular second recessed portion recessed toward the inner peripheral side for accommodating a garter spring, and the second recessed portion is arranged opposite to the front end portion of the second lip.

Images