CN214743337U - Sealing device convenient to assemble - Google Patents

Abstract

The application provides a sealing device convenient to assemble, which comprises a fixed sealing element, a rotary sealing element and a shaft sleeve, wherein the shaft sleeve, the fixed sealing element and the rotary sealing element are of annular structures and are respectively sleeved on a rotating shaft, the shaft sleeve is fixedly connected with the rotating shaft, the rotary sealing element is sleeved on the shaft sleeve, the rotary sealing element is in sliding connection with the shaft sleeve along the axial direction of the rotating shaft, the fixed sealing element and the rotary sealing element are arranged along the axial direction of the rotating shaft, one end, close to the rotary sealing element, of the fixed sealing element is provided with a fixed sealing surface, one end, close to the fixed sealing element, of the rotary sealing element is provided with a rotary sealing surface, the fixed sealing surface and the rotary sealing surface are in sealing sliding connection along the circumferential direction of the rotating shaft, a splicing groove is arranged on the fixed sealing surface, the splicing ring is fixedly connected on the rotary sealing surface, the splicing ring is arranged around the central axis of the rotating shaft, the central axis of the splicing ring and the central axis of the splicing groove are positioned on the same straight line, the splicing ring is spliced with the splicing groove along the axial direction of the rotating shaft.

Description

Sealing device convenient to assemble

Technical Field

The application relates to the technical field of sealing devices, in particular to a sealing device convenient to assemble.

Background

The sealing device is mainly used for isolating dust, gas or liquid, for example, a sealing ring is usually installed between a rotating shaft and other parts in a liquid pump for sealing, and the sealing of the end face moving at high speed by using a rubber ring or a sealing gasket can cause abrasion or friction heating to cause deformation and finally cause sealing failure, so that the end face moving at high speed is usually pressed and sealed by adopting wear-resistant materials such as ceramics or stainless steel.

The pivot among the prior art rotates with the ring seat to be connected, be equipped with the mounting groove on the ring seat, the mounting groove encircles the setting of rotation axis, set up cylindrical spring in the mounting groove, the pivot is located the cylindrical spring inboard, rotary seal spare and fixed seal spare overlap respectively in the pivot, rotary seal spare and pivot fixed connection or pressure fit, fixed seal spare's wherein one end is located the mounting groove, fixed seal spare's the other end is located the outside of mounting groove, fixed seal spare is located the outside one end of mounting groove and rotary seal spare along axial butt, cylindrical spring is located between fixed seal spare and the mounting groove bottom surface, cylindrical spring's the wherein one end and the bottom surface butt of mounting groove, rotary seal spare's one end butt is kept away from to cylindrical spring's the other end and fixed seal spare, cylindrical spring is in compression state all the time, cylindrical spring promotes fixed seal spare and compresses tightly rotary seal spare. The rotating shaft drives the rotary sealing element to rotate when rotating, the rotary sealing element and the fixed sealing element move relatively, the end faces of the rotary sealing element and the fixed sealing element slide relatively, and the end face of the rotary sealing element and the end face of the fixed sealing element are smooth and are tightly matched to realize sealing.

However, in the assembling process, the ring seat is required to be sleeved on the rotating shaft and fixedly connected with the casing, the cylindrical spring is sleeved on the rotating shaft and abutted against the ring seat, then the fixed sealing element is sleeved on the rotating shaft and abutted against the cylindrical spring, then the rotary sealing element is sleeved on the rotating shaft and fixedly connected with the rotating shaft, one surface of the rotary sealing element, which is close to the fixed sealing element, is abutted against the rotating shaft in the axial direction to form a sealing surface, and the mounting process is complex.

Disclosure of Invention

The application provides a sealing device convenient to assembly for fixed sealing member, rotary seal need overlap one by one and lead to the installation effectiveness low in the pivot among the solution prior art, the problem of the difficult operation.

In order to achieve the above purpose, the embodiments of the present application propose the following technical solutions:

a sealing device convenient to assemble comprises a fixed sealing element, a rotary sealing element and a shaft sleeve, wherein the shaft sleeve, the fixed sealing element and the rotary sealing element are of annular structures and are respectively sleeved on a rotating shaft, the shaft sleeve is fixedly connected with the rotating shaft, the rotary sealing element is sleeved on the shaft sleeve, the rotary sealing element is in sliding connection with the shaft sleeve along the axial direction of the rotating shaft, the fixed sealing element and the rotary sealing element are arranged along the axial direction of the rotating shaft, one end, close to the rotary sealing element, of the fixed sealing element is provided with a fixed sealing surface, one end, close to the fixed sealing element, of the rotary sealing element is provided with a rotary sealing surface, the fixed sealing surface and the rotary sealing surface are in sealing sliding connection along the circumferential direction of the rotating shaft, a splicing groove is arranged on the fixed sealing surface, and the splicing groove is arranged around the central axis of the rotating shaft, the rotary sealing surface is fixedly connected with a splicing ring, the splicing ring is arranged around the central axis of the rotating shaft, the central axis of the splicing ring and the central axis of the splicing groove are positioned on the same straight line, and the splicing ring and the splicing groove are spliced along the axial direction of the rotating shaft.

In some embodiments, the axial length of the splice ring is less than the axial depth of the splice groove.

In some embodiments, there is a gap between the outer surface of the splice ring and the inner surface of the splice groove.

In some embodiments, the opening edge of the splicing groove is provided with a first fillet surface.

In some embodiments, an edge of an end of the splice ring distal from the rotary seal is provided with a second radiused surface.

In some embodiments, a magnet is fixedly connected to the bottom surface of the splicing groove, a gap is formed between the magnet and the splicing ring, and the splicing ring is made of a magnetic metal material.

In some embodiments, the split ring is integrally connected with the rotary seal.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic structural view of a sealing device for ease of assembly in an embodiment of the present application;

fig. 2 is a partially enlarged view of a portion a in fig. 1.

Description of reference numerals:

100. fixing the sealing element; 110. a stationary seal face; 120. splicing grooves; 121. a first fillet surface;

200. a rotary seal; 210. rotating the sealing surface; 220. a splicing ring; 221. a second rounded surface;

300. a shaft sleeve;

400. a magnet;

500. a rotating shaft.

Detailed Description

Embodiments of the present application will be described in further detail below with reference to the drawings and examples. The following examples are intended to illustrate the present application but are not intended to limit the scope of the present application.

In the description of the embodiments of the present application, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the embodiments of the present application and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the embodiments of the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present application, it should be noted that the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, unless explicitly stated or limited otherwise; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. Specific meanings of the above terms in the embodiments of the present application can be understood in specific cases by those of ordinary skill in the art.

In the embodiments of the present application, unless otherwise explicitly specified or limited, the first feature "on" or "under" the second feature may be directly contacted with the second feature or indirectly contacted with the second feature through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," "some examples," or "possible implementations" or the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Referring to fig. 1 and fig. 2, an embodiment of the present application provides a sealing device convenient for assembly, including a fixed sealing element 100, a rotary sealing element 200, and a shaft sleeve 300, in which the shaft sleeve 300, the fixed sealing element 100, and the rotary sealing element 200 are all ring structures and are respectively sleeved on a rotating shaft 500, the shaft sleeve 300 is fixedly connected to the rotating shaft 500, the rotary sealing element 200 is sleeved on the shaft sleeve 300, the rotary sealing element 200 is slidably connected to the shaft sleeve 300 along an axial direction of the rotating shaft 500, the fixed sealing element 100 and the rotary sealing element 200 are arranged along an axial direction of the rotating shaft 500, one end of the fixed sealing element 100 close to the rotary sealing element 200 is provided with a fixed sealing surface 110, one end of the rotary sealing element 200 close to the fixed sealing element 100 is provided with a rotary sealing surface 210, the fixed sealing surface 110 and the rotary sealing surface 210 are sealingly and slidably connected along a circumferential direction of the rotating shaft 500, the fixed sealing surface 110 is provided with a splicing groove 120, the splicing groove 120 is arranged around a central axis of the rotating shaft 500, the splicing ring 220 is fixedly connected to the rotary sealing surface 210, the splicing ring 220 is arranged around the central axis of the rotating shaft 500, the central axis of the splicing ring 220 and the central axis of the splicing groove 120 are located on the same straight line, and the splicing ring 220 and the splicing groove 120 are spliced along the axial direction of the rotating shaft 500.

In some embodiments, the axial length of the splice ring 220 is less than the axial depth of the splice groove 120.

In some embodiments, there is a gap between the outer surface of the splice ring 220 and the inner surface of the splice groove 120.

In some embodiments, the opening edge of the splicing groove 120 is provided with a first rounded surface 121.

In some embodiments, the edge of the end of the splice ring 220 distal from the rotary seal 200 is provided with a second radiused surface 221.

In some embodiments, the magnet 400 is fixedly connected to the bottom surface of the splice groove 120, a gap is formed between the magnet 400 and the splice ring 220, and the splice ring 220 is made of a magnetic metal material.

In some embodiments, the splice ring 220 is integrally connected with the rotary seal 200.

The sealing device of the present embodiment, which facilitates assembly, the stationary sealing member 100 and the rotary sealing member 200 are made of a magnetic metal material, such as stainless steel. During installation, the rotary sealing element 200 and the fixed sealing element are abutted together, so that the fixed sealing surface 110 and the rotary sealing surface 210 are axially aligned, then the rotary sealing element 200 is moved towards the direction close to the fixed sealing element 100, the splicing ring 220 is inserted into the splicing groove 120, the magnet 400 generates magnetic attraction on the splicing ring 220, the splicing ring 220 can be stably spliced in the splicing groove 120 under the condition of not being influenced by other external forces, and traction force is provided for the fixed sealing element 100 and the rotary sealing element 200 in the axial direction; because a gap exists between the splicing ring 220 and the surface of the splicing groove 120, the splicing ring 220 and the inner wall of the splicing groove 120 can be prevented from rubbing in the relative rotation process of the rotary sealing element 200 and the fixed sealing element 100; the split ring 220 and the split groove 120 can provide a radial stop for the stationary seal 100 and the rotary seal 200, and prevent the stationary seal 100 and the rotary seal 200 from being misaligned in the radial direction. Before being sleeved on the rotating shaft 500, the fixed sealing element 100 and the rotary sealing element 200 are assembled on an independent assembling position and then are integrally sleeved on the rotating shaft 500, so that the working efficiency is improved, and the assembly is more convenient.

The above examples are only for explaining the present application and are not intended to limit the present application, and those skilled in the art can make modifications to the embodiments of the present application without inventive contribution as needed after reading the present specification, but are protected by patent laws within the scope of the claims of the present application.

Claims (7)

1. A sealing device convenient to assemble is characterized by comprising a fixed sealing element, a rotary sealing element and a shaft sleeve, wherein the shaft sleeve, the fixed sealing element and the rotary sealing element are of annular structures and are respectively sleeved on a rotating shaft, the shaft sleeve is fixedly connected with the rotating shaft, the rotary sealing element is sleeved on the shaft sleeve, the rotary sealing element is in sliding connection with the shaft sleeve along the axial direction of the rotating shaft, the fixed sealing element and the rotary sealing element are arranged along the axial direction of the rotating shaft, a fixed sealing surface is arranged at one end, close to the rotary sealing element, of the fixed sealing element, a rotary sealing surface is arranged at one end, close to the fixed sealing element, of the rotary sealing element, the fixed sealing surface and the rotary sealing surface are in sealing sliding connection along the circumferential direction of the rotating shaft, a splicing groove is arranged on the fixed sealing surface, and the splicing groove is arranged around the central axis of the rotating shaft, the rotary sealing surface is fixedly connected with a splicing ring, the splicing ring is arranged around the central axis of the rotating shaft, the central axis of the splicing ring and the central axis of the splicing groove are positioned on the same straight line, and the splicing ring and the splicing groove are spliced along the axial direction of the rotating shaft.

2. The easy-to-assemble sealing device of claim 1, wherein the axial length of the splice ring is less than the axial depth of the splice groove.

3. The assembly facilitating seal of claim 2, wherein a gap is provided between an outer surface of the splice ring and an inner surface of the splice groove.

4. An easily assembled sealing device according to claim 3, wherein the opening edge of the splicing groove is provided with a first rounded surface.

5. An assembly facilitating seal according to claim 4 in which the edge of the end of the split ring remote from the rotary seal is provided with a second radiused surface.

6. The easy-to-assemble sealing device according to claim 5, wherein a magnet is fixedly connected to the bottom surface of the splicing groove, a gap is formed between the magnet and the splicing ring, and the splicing ring is made of a magnetic metal material.

7. The assembly facilitating seal of claim 6, wherein the split ring is integrally connected with the rotary seal.

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