Combined sealing element

Abstract

The utility model discloses a combined sealing element which comprises a seat body, a rotating shaft is arranged on the seat body, and a first sealing assembly, a second sealing assembly and a shell assembly are respectively arranged on the rotating shaft from inside to outside. Each of the first sealing assembly and the second sealing assembly is formed by splicing two semi-arc-shaped sealing pieces; the shell assembly is formed by splicing two semi-arc-shaped shells; the semi-arc-shaped sealing piece comprises an arc-shaped sealing body, a first annular clamping part is formed on the upper portion of the arc-shaped body, and a first annular mounting part is formed on the lower portion of the arc-shaped body. The semi-arc-shaped shell comprises an arc-shaped shell, a second annular clamping part is formed at the upper part of the arc-shaped shell, and a second annular mounting part is formed at the lower part of the arc-shaped shell; the sealing element solves the problem that in the prior art, most sealing elements are of an integrated structure, in the actual operation process, the sealing elements can be replaced as a whole only by disassembling equipment connected with the end of a shaft body, and the operation is very tedious.

Description

Technical Field

[0001] The utility model relates to the field of sealing components, in particular to a combined sealing component. Background Art

[0002] For devices with a rotating shaft output, a sealing assembly is often provided at the rotating shaft and the housing to prevent oil, dust, etc. from entering the interior of the housing. For example, the Chinese patent with patent number CN201821419963.5 provides a combined seal, including an annular body sleeved outside the rotating shaft and made of elastic material, an annular sealing portion is provided on the inner wall of the annular body, the inner wall of the sealing portion is against the side wall of the rotating shaft, a skeleton made of rigid material is fixed in the annular body, the skeleton is in the shape of a straight strip and the length of the skeleton extends along the radial direction of the annular body, there are at least two skeletons and they are evenly distributed along the circumference of the annular body, the inner end of the skeleton extends into the inner cavity of the annular body, an annular groove coaxially arranged with the rotating shaft is provided on the side wall of the rotating shaft, the annular groove includes two side walls distributed along the axial direction of the rotating shaft, the inner end of the skeleton is inserted into the annular groove, and both side walls of the annular groove are against the skeleton. Most of the seals in the above-mentioned prior art are integrated structures, which will wear out after being in contact with the rotating shaft for a long time, resulting in the need for regular replacement. In actual operation, the replacement of the seal requires the removal of the equipment connected to the end of the shaft before the entire seal can be replaced, which is very cumbersome. Utility Model Content

[0003] The purpose of the utility model is to provide a combined seal, which solves the problem that the seals in the prior art are mostly integrated structures. In actual operation, the replacement of the seal requires the removal of the equipment connected to the end of the shaft body before the overall replacement can be carried out, which is very cumbersome.

[0004] In order to achieve the above object, the utility model provides a combined seal, which includes a seat body, a rotating shaft is arranged on the seat body, and a first sealing component, a second sealing component and a shell component are arranged on the rotating shaft from inside to outside;

[0005] The first sealing assembly and the second sealing assembly are both composed of two semi-arc-shaped sealing members spliced ​​together; the housing assembly is composed of two semi-arc-shaped shells spliced ​​together;

[0006] The semi-arc seal comprises an arc-shaped sealing body, the upper part of the arc-shaped body is formed with a first annular clamping portion, the lower part of the arc-shaped body is formed with a first annular mounting portion, the first annular clamping portion is close to the rotating shaft, and the first annular mounting portion is arranged on the surface of the seat body;

[0007] The semi-arc shell includes an arc shell, a second annular clamping portion is formed on the upper part of the arc shell, and a second annular mounting portion is formed on the lower part. The second annular clamping portion is close to the rotating shaft, and the second annular mounting portion is arranged on the surface of the seat body.

[0008] Preferably, the splicing seams of the first sealing assembly and the splicing seams of the second sealing assembly are staggered.

[0009] Preferably, an annular snap-fit ​​groove is formed on the seat body, and the first annular mounting portion can be inserted into the annular snap-fit ​​groove.

[0010] Preferably, a protrusion is formed on the bottom surface of the second annular mounting portion, and the protrusion presses the first annular mounting portion into the annular clamping groove.

[0011] Preferably, the second annular mounting portion is fastened to the surface of the seat body by a first screw.

[0012] Preferably, a connecting ear is formed on the second annular clamping portion, and the two connecting ears are locked by a second screw.

[0013] Beneficial effects: The utility model provides a combined seal, which includes a seat body, a rotating shaft is arranged on the seat body, and a first sealing component, a second sealing component and a shell component are respectively arranged on the rotating shaft from the inside to the outside; the first sealing component and the second sealing component are both composed of two semi-arc seals spliced ​​together; the shell component is composed of two semi-arc shells spliced ​​together; the semi-arc seal includes an arc-shaped sealing body, a first annular clamping portion is formed on the upper part of the arc-shaped body, and a first annular mounting portion is formed on the lower part, the first annular clamping portion is close to the rotating shaft, and the first annular mounting portion is arranged on the surface of the seat body The semi-arc shell includes an arc shell, a second annular clamping portion is formed on the upper part of the arc shell, and a second annular mounting portion is formed on the lower part thereof, the second annular clamping portion is close to the rotating shaft, and the second annular mounting portion is arranged on the surface of the seat body; when replacing, there is no need to remove the connecting device at the end of the rotating shaft, firstly, the two semi-arc seals of the first sealing assembly are spliced, wherein the first annular clamping portion is fitted with the rotating shaft, and the first annular mounting portion is installed on the surface of the seat body, and then the second sealing assembly is installed on the outside of the first sealing assembly according to the above steps, and finally the two semi-arc shells are installed on the outside thereof to lock the two sealing assemblies. The combined seal provided by the utility model can not only ensure the sealing performance between the seat body and the rotating shaft, but also facilitate disassembly and installation. When disassembling and installing, there is no need to remove the connecting device at the end of the rotating shaft, which greatly improves the maintenance efficiency.

[0014] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention, but do not constitute a limitation to the present invention. In the accompanying drawings:

[0016] Figure 1 It is a structural diagram of the combined seal provided by the utility model;

[0017] Figure 2 This is a disassembled diagram of the combined seal provided by the utility model;

[0018] Figure 3 This is a structural diagram of the seat body in the combined seal provided by the utility model;

[0019] Figure 4 It is a structural diagram of a semi-arc seal in a combined seal provided by the utility model;

[0020] Figure 5 It is a structural diagram of a semi-arc shell in a combined seal provided by the utility model.

[0021] Description of Reference Numerals

[0022] 1-seat body; 2-rotating shaft; 3-first sealing assembly; 4-second sealing assembly; 5-housing assembly; 6-annular snap-fit ​​groove; 7-arc-shaped sealing body; 8-first annular mounting portion; 9-first annular snap-fit ​​portion; 10-arc-shaped housing; 11-second annular snap-fit ​​portion; 12-second annular mounting portion; 13-raised portion; 14-connecting ear. DETAILED DESCRIPTION

[0023] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0024] like Figure 1-5As shown: the utility model provides a combined seal, which includes a seat body 1, a rotating shaft 2 is arranged on the seat body 1, and a first sealing component 3, a second sealing component 4 and a shell component 5 are respectively arranged on the rotating shaft 2 from the inside to the outside; the first sealing component 3 and the second sealing component 4 are both composed of two semi-arc seals spliced ​​together; the shell component 5 is composed of two semi-arc shells spliced ​​together; the semi-arc seal includes an arc-shaped sealing body 7, a first annular clamping portion 9 is formed on the upper part of the arc-shaped body 7, and a first annular mounting portion 8 is formed on the lower part thereof, the first annular clamping portion 9 is close to the rotating shaft 2, and the first annular mounting portion 8 is arranged on the surface of the seat body 1; the semi-arc shell includes an arc-shaped shell 10, a second annular clamping portion 11 is formed on the upper part of the arc-shaped shell 10, and a second annular mounting portion 12 is formed on the lower part thereof, the second annular clamping portion 11 is close to the rotating shaft 2, and the second annular mounting portion 12 is arranged on the surface of the seat body 1. When replacing, there is no need to remove the connecting device at the end of the rotating shaft. First, the two semi-arc seals of the first sealing component are spliced, wherein the first annular clamping portion is fitted with the rotating shaft, and the first annular mounting portion is installed on the surface of the seat body. Then, the second sealing component is installed on the outside of the first sealing component according to the above steps, and finally, the two semi-arc shells are installed on the outside thereof to lock the two sealing components. The combined sealing component provided by the utility model can not only ensure the sealing performance between the seat body and the rotating shaft, but also facilitate disassembly and installation. When disassembling and installing, there is no need to remove the connecting device at the end of the rotating shaft, which greatly improves the maintenance efficiency.

[0025] In a preferred embodiment of the present invention, in order to improve the sealing performance between the two sets of sealing components, the splicing seams of the first sealing component 3 and the splicing seams of the second sealing component 4 are staggered.

[0026] In a preferred embodiment of the present invention, in order to enable the first annular mounting parts in the two sets of sealing assemblies to be tightly engaged on the seat body, an annular engaging groove 6 is formed on the seat body 1, and the first annular mounting part 8 can be engaged in the annular engaging groove 6.

[0027] In a preferred embodiment of the present utility model, in order to enable the arc-shaped shell to press the first annular mounting portion 8 on the sealing assembly into the annular clamping groove 6, a protrusion 13 is formed on the bottom surface of the second annular mounting portion 12, and the protrusion 13 presses the first annular mounting portion 8 into the annular clamping groove 6.

[0028] In a preferred embodiment of the present invention, the first annular mounting portion 8 is fastened to the surface of the base body 1 by a first screw to facilitate the locking of the arc-shaped shell.

[0029] In a preferred embodiment of the present invention, in order to press the first annular clamping portion on the sealing assembly onto the surface of the rotating shaft 2, a connecting ear 14 is formed on the second annular clamping portion 11, and the two connecting ears 14 are locked by a second screw.

[0030] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications, and these simple modifications all belong to the protection scope of the present invention.

[0031] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present utility model will not further describe various possible combinations.

[0032] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A combined seal, characterized in that: The combined seal comprises a seat body (1), a rotating shaft (2) is arranged on the seat body (1), and a first sealing component (3), a second sealing component (4) and a housing component (5) are arranged on the rotating shaft (2) from inside to outside; The first sealing assembly (3) and the second sealing assembly (4) are both composed of two semi-arc-shaped sealing components spliced ​​together; the outer shell assembly (5) is composed of two semi-arc-shaped shells spliced ​​together; The semi-arc seal comprises an arc-shaped seal body (7), a first annular clamping portion (9) is formed on the upper portion of the arc-shaped seal body (7), and a first annular mounting portion (8) is formed on the lower portion thereof, the first annular clamping portion (9) is close to the rotating shaft (2), and the first annular mounting portion (8) is arranged on the surface of the seat body (1); The semi-arc shell comprises an arc shell (10), the upper part of the arc shell (10) is formed with a second annular clamping portion (11), and the lower part of the arc shell (10) is formed with a second annular mounting portion (12), the second annular clamping portion (11) is close to the rotating shaft (2), and the second annular mounting portion (12) is arranged on the surface of the seat body (1).

2. The combined seal according to claim 1, characterized in that: The splicing seams of the first sealing component (3) and the splicing seams of the second sealing component (4) are arranged in a staggered manner.

3. The combined seal according to claim 2, characterized in that: An annular snap-fit ​​groove (6) is formed on the seat body (1), and the first annular mounting portion (8) can be inserted into the annular snap-fit ​​groove (6).

4. The combined seal according to claim 3, characterized in that: A protrusion (13) is formed on the bottom surface of the second annular mounting portion (12), and the protrusion (13) presses the first annular mounting portion (8) tightly into the annular clamping groove (6).

5. The combined seal according to claim 4, characterized in that: The second annular mounting portion (12) is fastened to the surface of the seat body (1) by means of a first screw.

6. The combined seal according to claim 5, characterized in that: A connecting ear (14) is formed on the second annular clamping portion (11), and the two connecting ears (14) are locked by a second screw.

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