Rotary sealing element with pressure-bearing structure

Abstract

The utility model relates to a rotary sealing element with a pressure-bearing structure. The rotary sealing element sequentially comprises a sealing outer lip body and a sealing inner lip body from outside to inside, an outer lip body pressure-bearing protruding block is arranged on the inner side, close to the bottom, of the outer sealing lip body, and an inner lip body pressure-bearing protruding block is arranged on the outer side, close to the bottom, of the inner sealing lip body. An inner lip body lower contact protruding block protruding towards the bottom of the inner side is arranged on the inner lip body lower notch, and an inner lip body upper contact protruding block protruding towards the top of the inner side is arranged on the inner lip body upper notch. The inner sealing lip body and the outer sealing lip body are supported through the outer lip body pressure-bearing protruding block and the inner lip body pressure-bearing protruding block, and the inner side of the inner sealing lip body is supported through the inner lip body lower contact protruding block and the inner lip body upper contact protruding block, so that the inner sealing lip body can be in good contact with a sealing groove in the inner side, the risk of falling off is reduced, and the sealing effect is improved. The service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical seals, in particular to a rotating seal with a pressure-bearing structure. Background Technique

[0002] Axial rotating water seal is an end face seal device mostly used in the shaft head part of rolling mill rolls. It is a pure rubber product and an important sealing element that can be used to prevent water and impurities from entering the rotating seal cavity to ensure the normal operation of the bearing lubrication and sealing system.

[0003] After a large amount of retrieval, it is found that the Chinese patent publication number is CN221075221U, which discloses a V-shaped axial rotating seal. From the outside to the inside, it successively includes a sealing outer lip body and a sealing inner lip body; the side of the sealing inner lip body away from the sealing outer lip body is inclined. A first O-ring is installed between the sealing outer lip body and the sealing inner lip body, a second O-ring is installed at the inner bottom of the sealing inner lip body, and a third O-ring is installed at the inner top of the sealing inner lip body; several outer lip contact protrusions are evenly arranged on the contact surface of the outside of the sealing outer lip body from top to bottom. In the utility model, the outside of the sealing inner lip body is supported by the first O-ring, and the inside of the sealing inner lip body is supported by the second O-ring and the third O-ring, so that the sealing inner lip body can be in good contact with the inner sealing groove, reducing the risk of falling off and improving the service life.

[0004] To sum up, in the existing V-shaped rotating seal, the inclined lip body lacks a certain amount of support. Therefore, a support structure of multiple O-rings is used to support it. However, in the long-term use process of the support structure of the O-ring, there may be a risk of falling off.

[0005] In view of the above defects, the designer actively conducts research and innovation in order to create a rotating seal with a pressure-bearing structure, making it more valuable in industrial applications. Content of the Utility Model

[0006] To solve any of the above technical problems, the purpose of the utility model is to provide a rotating seal with a pressure-bearing structure.

[0007] To achieve the above purpose, the utility model adopts the following technical scheme:

[0008] A rotating seal with a pressure-bearing structure, which successively includes a sealing outer lip body and a sealing inner lip body from the outside to the inside, and the side of the sealing inner lip body away from the sealing outer lip body is inclined;

[0009] On the inner side of the outer sealing lip near the bottom, there is an outer lip pressure-bearing convex block, which protrudes towards the inner sealing lip. On the outer side of the inner sealing lip near the bottom, there is an inner lip pressure-bearing convex block, which protrudes towards the outer sealing lip.

[0010] On the inner bottom of the inner sealing lip, there is a lower inner lip notch. On the lower inner lip notch, there is a lower inner lip contact convex block protruding towards the inner bottom. On the inner top of the inner sealing lip, there is an upper inner lip notch. On the upper inner lip notch, there is an upper inner lip contact convex block protruding towards the inner top.

[0011] As a further improvement of the present utility model, there is an outer lip contact convex on the outer side of the outer sealing lip.

[0012] As a further improvement of the present utility model, the outer lip contact convex is composed of a number of serrated convex structures.

[0013] As a further improvement of the present utility model, the outer lip contact convex is composed of a number of arc convex structures.

[0014] As a further improvement of the present utility model, on the top of the outer sealing lip, there is a downwardly concave outer lip top groove, and an outer lip contact ring is installed in the outer lip top groove.

[0015] As a further improvement of the present utility model, the outer lip contact ring is bonded in the outer lip top groove.

[0016] As a further improvement of the present utility model, both the outer lip pressure-bearing convex block and the inner lip pressure-bearing convex block are arc convex structures.

[0017] As a further improvement of the present utility model, both the lower inner lip contact convex block and the upper inner lip contact convex block are arc convex structures.

[0018] By means of the above solution, the present utility model has at least the following advantages:

[0019] The present utility model supports the inner and outer sealing lips through the outer lip pressure-bearing convex block and the inner lip pressure-bearing convex block, and supports the inner side of the inner sealing lip through the lower inner lip contact convex block and the upper inner lip contact convex block, so that the inner sealing lip can be in good contact with the inner sealing groove, reducing the risk of detachment and improving the service life.

[0020] The present utility model does not use an O-ring, which can avoid the risk of O-ring detachment.

[0021] The above description is only an overview of the technical solution of the present utility model. In order to better understand the technical means of the present utility model and be able to implement it according to the content of the specification, the following will describe in detail with reference to the preferred embodiments of the present utility model and the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the accompanying drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present utility model and should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0023] Figure 1 is a schematic structural diagram of the first embodiment of the present utility model;

[0024] Figure 2 is a schematic structural diagram of the second embodiment of the present utility model;

[0025] Figure 3 is a schematic structural diagram of the third embodiment of the present utility model.

[0026] Among them, the meanings of the reference numerals in the drawings are as follows.

[0027] Sealing outer lip body 1, sealing inner lip body 2, outer lip body pressure-bearing convex block 3, inner lip body pressure-bearing convex block 4, inner lip body lower notch 5, inner lip body lower contact convex block 6, inner lip body upper notch 7, inner lip body upper contact convex block 8, outer lip body contact protrusion 9, outer lip body top groove 10, outer lip body contact ring 11. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] The following will further describe in detail the specific embodiments of the present utility model in conjunction with the drawings and embodiments. The following embodiments are used to illustrate the present utility model but are not intended to limit the scope of the present utility model.

[0029] In order to enable those skilled in the art to better understand the solution of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Usually, the components of the embodiments of the present utility model described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present utility model provided in the drawings is not intended to limit the scope of the claimed present utility model, but only represents the selected embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present utility model.

[0030] Embodiment

[0031] As Figures 1 to 3 shown

[0032] A rotary seal with a pressure-bearing structure includes, from outside to inside, a sealing outer lip 1 and a sealing inner lip 2 in sequence, and the side of the sealing inner lip 2 away from the sealing outer lip 1 is inclined.

[0033] 1. An outer lip pressure-bearing convex block 3 is arranged on the inner side of the sealing outer lip 1 near the bottom, and the side of the outer lip pressure-bearing convex block 3 facing the sealing inner lip 2 is convex. An inner lip pressure-bearing convex block 4 is arranged on the outer side of the sealing inner lip 2 near the bottom, and the side of the inner lip pressure-bearing convex block 4 facing the sealing outer lip 1 is convex.

[0034] Among them, both the outer lip pressure-bearing convex block 3 and the inner lip pressure-bearing convex block 4 are arc-shaped convex structures.

[0035] 2. An inner lip lower notch 5 is arranged at the inner bottom of the sealing inner lip 2. An inner lip lower contact convex block 6 protruding towards the inner bottom is arranged on the inner lip lower notch 5. An inner lip upper notch 7 is arranged at the inner top of the sealing inner lip 2. An inner lip upper contact convex block 8 protruding towards the inner top is arranged on the inner lip upper notch 7.

[0036] Among them, both the inner lip lower contact convex block 6 and the inner lip upper contact convex block 8 are arc-shaped convex structures.

[0037] 3. An outer lip contact protrusion 9 is arranged on the outer side of the sealing outer lip 1. Through the above-mentioned outer lip contact protrusion 9, the contact between the sealing outer lip 1 and the outer sealing groove can be increased.

[0038] 1) The outer lip contact protrusion 9 is composed of a plurality of serrated protrusion structures.

[0039] 2) The outer lip contact protrusion 9 is composed of a plurality of arc-shaped protrusion structures.

[0040] 4. An outer lip top groove 10 recessed downward is arranged at the top of the sealing outer lip 1. An outer lip contact ring 11 is installed in the outer lip top groove 10, and the outer lip contact ring 11 is bonded in the outer lip top groove 10.

[0041] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or the number of indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0042] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "connected to" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection, it may be a mechanical connection, it may be an electrical connection, it may be directly connected, or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood through specific circumstances.

[0043] The above description is only a preferred embodiment of the present utility model and is not used to limit the present utility model. It should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the present utility model, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims

1. A rotary seal with a pressure-bearing structure, comprising, from the outside to the inside, a sealing outer lip body (1) and a sealing inner lip body (2), wherein the sealing inner lip body (2) is arranged obliquely away from the side of the sealing outer lip body (1); Features: An outer lip body pressure-bearing protrusion (3) is arranged on the inner side of the sealing outer lip body (1) near the bottom, and the outer lip body pressure-bearing protrusion (3) protrudes toward one side of the sealing inner lip body (2); an inner lip body pressure-bearing protrusion (4) is arranged on the outer side of the sealing inner lip body (2) near the bottom, and the inner lip body pressure-bearing protrusion (4) protrudes toward one side of the sealing outer lip body (1); An inner lip lower notch (5) is provided at the inner bottom of the sealing inner lip body (2), and an inner lip lower contact protrusion (6) protruding toward the inner bottom is provided on the inner lip lower notch (5); an inner lip upper notch (7) is provided at the inner top of the sealing inner lip body (2), and an inner lip upper contact protrusion (8) protruding toward the inner top is provided on the inner lip upper notch (7).

2. A rotary seal with a pressure-bearing structure according to claim 1, characterized in that: An outer lip contact protrusion (9) is arranged on the outer side of the sealing outer lip (1).

3. A rotary seal with a pressure-bearing structure as claimed in claim 2, characterized in that: The outer lip contact protrusion (9) is composed of a plurality of sawtooth protrusion structures.

4. A rotary seal with a pressure-bearing structure as claimed in claim 2, characterized in that: The outer lip contact protrusion (9) is composed of a plurality of arc-shaped protrusion structures.

5. A rotary seal with a pressure-bearing structure as claimed in claim 1, characterized in that: A downwardly recessed outer lip top groove (10) is provided on the top of the sealing outer lip (1), and an outer lip contact ring (11) is installed in the outer lip top groove (10).

6. A rotary seal with a pressure-bearing structure as claimed in claim 5, characterized in that: The outer lip contact ring (11) is bonded in the outer lip top groove (10).

7. A rotary seal with a pressure-bearing structure according to claim 1, characterized in that: The outer lip body pressure-bearing protrusion (3) and the inner lip body pressure-bearing protrusion (4) are both arc-shaped protruding structures.

8. A rotary seal with a pressure-bearing structure as claimed in claim 1, characterized in that: The inner lip lower contact protrusion (6) and the inner lip upper contact protrusion (8) are both arc-shaped protruding structures.

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