CN214743336U - End face sealing device convenient to assemble - Google Patents

Abstract

The application provides an end face sealing device convenient to assemble, which comprises a ring seat, a fixed sealing element, a rotary sealing element and a shaft sleeve, wherein the ring seat is sleeved on a rotating shaft and is fixedly connected with a machine shell, the inner side edge of one end of the ring seat is provided with a groove, the fixed sealing element is annular, the fixed sealing element is sleeved on the rotating shaft and is positioned in the groove, the fixed sealing element is abutted against the bottom surface of the groove along the axial direction of the rotating shaft, the rotary sealing element and the shaft sleeve are annular, the rotary sealing element is sleeved on the shaft sleeve, the shaft sleeve is sleeved on the rotating shaft and is abutted against the fixed sealing element along the axial direction of the rotating shaft, one end of the shaft sleeve, which is far away from the fixed sealing element, is fixedly connected with a limiting ring, the limiting ring is positioned on the outer side of the shaft sleeve, the rotary sealing element is positioned between the fixed sealing element and the limiting ring, one side, which is close to the limiting ring, a mounting groove is arranged, and an elastic element is arranged in the shaft sleeve, the two ends of the elastic piece are respectively abutted with the bottom surface of the mounting groove and the limiting ring along the axial direction of the rotating shaft.

Description

End face sealing device convenient to assemble

Technical Field

The application relates to the technical field of sealing devices, in particular to an end face 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 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 rotary seal ring and compresses tightly with fixed seal ring. 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, need earlier with ring seat cover in the pivot and with casing fixed connection, with cylindrical spring cover in the pivot and with the ring seat butt, then with fixed seal cover in the pivot and with the cylindrical spring butt, then with rotary seal cover in the pivot and with pivot fixed connection, rotary seal forms sealed face along the axial butt with the one side that fixed seal is close to each other, the installation is complicated, and cylindrical spring is big with the axiality error of pivot, therefore the straightness error that hangs down between cylindrical spring's axis and the sealed face is great, make the degree of wear of sealed face different positions department inhomogeneous in the course of the work.

Disclosure of Invention

The application provides an end face seal device convenient to assembly, the assembly of being convenient for, and can improve the wearing and tearing uniform degree of sealed face different positions department.

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

an end face sealing device convenient to assemble comprises a ring seat, a fixed sealing element, a rotary sealing element and a shaft sleeve, wherein the ring seat is sleeved on a rotating shaft and is fixedly connected with a machine shell, the diameter of the inner wall of the ring seat is larger than that of the rotating shaft, a groove is formed in the inner side edge of one end of the ring seat, the fixed sealing element is annular, the fixed sealing element is sleeved on the rotating shaft and is positioned in the groove, the fixed sealing element is abutted to the bottom surface of the groove along the axial direction of the rotating shaft, the rotary sealing element and the shaft sleeve are annular, the rotary sealing element is sleeved on the shaft sleeve, the shaft sleeve is sleeved on the rotating shaft and is abutted to the fixed sealing element along the axial direction of the rotating shaft, and a limiting ring is fixedly connected to one end, far away from the fixed sealing element, of the shaft sleeve, the spacing ring is located the outside of axle sleeve, rotatory sealing member is located fixed sealing member with between the spacing ring, rotatory sealing member is close to the one side of spacing ring is equipped with the mounting groove, be equipped with the elastic component in the mounting groove, the both ends of elastic component respectively with the bottom surface of mounting groove and the spacing ring is followed the axial butt of pivot, the inner wall of rotatory sealing member with the outer wall sealing connection of axle sleeve, the inner wall of axle sleeve with the outer wall sealing connection of pivot, the outer wall of fixed sealing member with the inner wall sealing connection of recess.

In some embodiments, a first sealing ring is disposed between the bottom surface of the groove and the fixed sealing member, and the surface of the first sealing ring is in press-sealing fit with the bottom surface of the groove and the fixed sealing member, respectively.

In some embodiments, a second sealing ring is disposed between the inner wall of the rotary sealing element and the outer wall of the shaft sleeve, and the surface of the second sealing ring is in press-sealing fit with the shaft sleeve and the rotary sealing element respectively.

In some embodiments, a third sealing ring is disposed between the inner wall of the shaft sleeve and the outer wall of the rotating shaft, and the surface of the third sealing ring is in press-seal fit with the shaft sleeve and the rotating shaft, respectively.

In some embodiments, the mounting slots are provided in a plurality and are distributed in an equiangular circumferential array about a central axis of the rotary seal.

In some embodiments, the elastic member includes a cylindrical spring, and two ends of the cylindrical spring are respectively abutted against the bottom surface of the mounting groove and the limiting ring.

In some embodiments, the stop collar abuts the rotary seal in a circumferential direction of the shaft.

In some embodiments, one surface of the rotary sealing element, which is close to the limiting ring, is provided with a limiting hole, the limiting hole is located between two adjacent mounting grooves, a driving pin is inserted in the limiting hole and is fixedly connected with the limiting ring, and the outer wall of the driving pin is abutted to the inner wall of the limiting hole along the circumferential direction of the rotating shaft.

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 an end face seal device that facilitates assembly in an embodiment of the present application.

Description of reference numerals:

100. a ring seat; 110. a groove;

200. fixing the sealing element;

300. a rotary seal; 310. mounting grooves; 320. a limiting hole;

400. a shaft sleeve; 410. a limiting ring;

500. a rotating shaft;

610. a first seal ring; 620. a second seal ring; 630. a third seal ring;

700. a cylindrical spring;

800. a drive pin.

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, an embodiment of the present application provides an end face sealing device convenient for assembly, including a ring seat 100, a fixed sealing element 200, a rotary sealing element 300, and a shaft sleeve 400, wherein the ring seat 100 is sleeved on a rotating shaft 500, the ring seat 100 is fixedly connected with a casing, the diameter of the inner wall of the ring seat 100 is greater than that of the rotating shaft 500, the inner edge of one end of the ring seat 100 is provided with a groove 110, the fixed sealing element 200 is annular, the fixed sealing element 200 is sleeved on the rotating shaft 500, the fixed sealing element 200 is located in the groove 110, the fixed sealing element 200 is abutted against the bottom surface of the groove 110 along the axial direction of the rotating shaft 500, the rotary sealing element 300 and the shaft sleeve 400 are annular, the rotary sealing element 300 is sleeved on the shaft sleeve 400, the shaft sleeve 400 is sleeved on the rotating shaft 500, the rotary sealing element 300 is abutted against the fixed sealing element 200 along the axial direction of the rotating shaft 500, one end of the shaft sleeve 400 far from the fixed sealing element 200 is fixedly connected with a limiting ring 410, the limiting ring 410 is located on the outer side of the shaft sleeve 400, the rotary sealing element 300 is located between the fixed sealing element 200 and the spacing ring 410, one side that the rotary sealing element 300 is close to the spacing ring 410 is equipped with the mounting groove 310, be equipped with the elastic component in the mounting groove 310, the both ends of elastic component respectively with the bottom surface of mounting groove 310 and the axial butt of spacing ring 410 along pivot 500, the inner wall of rotary sealing element 300 and the outer wall sealing connection of axle sleeve 400, the inner wall of axle sleeve 400 and the outer wall sealing connection of pivot 500, the outer wall of fixed sealing element 200 and the inner wall sealing connection of recess 110.

In some embodiments, a first sealing ring 610 is disposed between the bottom surface of the groove 110 and the stationary sealing member 200, and the surface of the first sealing ring 610 is in press-sealing engagement with the bottom surface of the groove 110 and the stationary sealing member 200, respectively.

In some embodiments, a second sealing ring 620 is disposed between the inner wall of the rotary seal 300 and the outer wall of the shaft sleeve 400, and the surface of the second sealing ring 620 is in press-sealing engagement with the shaft sleeve 400 and the rotary seal 300, respectively.

In some embodiments, a third sealing ring 630 is disposed between the inner wall of the shaft sleeve 400 and the outer wall of the rotating shaft 500, and the surface of the third sealing ring 630 is in press-sealing engagement with the shaft sleeve 400 and the rotating shaft 500, respectively.

In some embodiments, the mounting slots 310 are provided in a plurality and are distributed in an equiangular circumferential array about the central axis of the rotary seal 300.

In some embodiments, the elastic member includes a cylindrical spring 700, and both ends of the cylindrical spring 700 are respectively abutted against the bottom surface of the mounting groove 310 and the stop collar 410.

In some embodiments, the stop collar 410 abuts the rotary seal 300 in a circumferential direction of the shaft 500.

In some embodiments, a limiting hole 320 is formed in a surface of the rotary sealing element 300 close to the limiting ring 410, the limiting hole 320 is located between two adjacent mounting grooves 310, a driving pin 800 is inserted into the limiting hole 320, the driving pin 800 is fixedly connected with the limiting ring 410, and an outer wall of the driving pin 800 abuts against an inner wall of the limiting hole 320 along a circumferential direction of the rotating shaft 500.

The end face sealing device convenient to assemble provided by the embodiment, one face of the rotary sealing element 300 and one face of the fixed sealing element 200 which are mutually abutted are connected in a sliding mode to form a sealing face, the ring seat 100 and the fixed sealing element 200 are tightly matched through the first sealing ring 610, the fixed sealing element 200 can rotate along with the rotary sealing element 300, the rotary sealing element 300 and the shaft sleeve 400 are tightly matched through the second sealing ring 620 to realize synchronous rotation of the shaft sleeve 400 and the rotary sealing element 300, the shaft sleeve 400 and the rotating shaft 500 are tightly matched through the third sealing ring 630, and the shaft sleeve 400 can rotate along with the rotating shaft 500. Because the rotary sealing element 300 is sleeved on the shaft sleeve 400, the limiting ring 410 is arranged in a sheet shape, and the fixed sealing element 200 is positioned in the groove 110, the axial distance between the surfaces, away from each other, of the ring seat 100 and the limiting ring 410 is greatly reduced, the axial size of the matched end face sealing device is reduced, and the structure of the end face sealing device convenient to assemble is more compact. The ring seat 100 is integrally connected with the casing, in the assembling process, the rotating shaft 500 is inserted into the ring seat 100, the first sealing ring 610 is placed into the mounting groove 310, and the fixed sealing element 200 is sleeved on the rotating shaft 500 and pressed into the mounting groove 310; inserting the cylindrical spring 700 into the groove 110, sleeving the second sealing ring 620 on the shaft sleeve 400, sleeving the rotary sealing element 300 on the shaft sleeve 400, pressing the second sealing ring 620 by the rotary sealing element 300, and inserting the driving pin 800 into the limiting hole 320; the third seal ring 630 is sleeved on the rotating shaft 500, the shaft sleeve 400 compresses the third seal ring 630, and the shaft sleeve 400 is moved towards the direction close to the fixed seal element 200, so that the rotary seal element 300 is abutted against the fixed seal element 200 along the axial direction, and the assembly process is completed. Since the rotary sealing element 300, the second sealing ring 620 and the third sealing ring 630 can be assembled and then installed on the rotating shaft 500 together, the rotary sealing element 300, the second sealing ring 620 and the third sealing ring 630 can be assembled into a first semi-finished product in batch in an independent assembly area, the first sealing ring 610, the ring seat 100 and the fixed sealing element 200 can be assembled into a second semi-finished product in batch in an independent area, and then the first semi-finished product and the second semi-finished product are assembled together.

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 (8)

1. An end face sealing device convenient to assemble is characterized by comprising a ring seat, a fixed sealing element, a rotary sealing element and a shaft sleeve, wherein the ring seat is sleeved on a rotating shaft and is fixedly connected with a machine shell, the diameter of the inner wall of the ring seat is larger than that of the rotating shaft, a groove is arranged on the inner side edge of one end of the ring seat, the fixed sealing element is annular, the fixed sealing element is sleeved on the rotating shaft and is positioned in the groove, the fixed sealing element is abutted against the bottom surface of the groove along the axial direction of the rotating shaft, the rotary sealing element and the shaft sleeve are annular, the rotary sealing element is sleeved on the shaft sleeve, the shaft sleeve is sleeved on the rotating shaft and is abutted against the fixed sealing element along the axial direction of the rotating shaft, and a limit ring is fixedly connected to one end, far away from the fixed sealing element, of the shaft sleeve, the spacing ring is located the outside of axle sleeve, rotatory sealing member is located fixed sealing member with between the spacing ring, rotatory sealing member is close to the one side of spacing ring is equipped with the mounting groove, be equipped with the elastic component in the mounting groove, the both ends of elastic component respectively with the bottom surface of mounting groove and the spacing ring is followed the axial butt of pivot, the inner wall of rotatory sealing member with the outer wall sealing connection of axle sleeve, the inner wall of axle sleeve with the outer wall sealing connection of pivot, the outer wall of fixed sealing member with the inner wall sealing connection of recess.

2. An end face seal assembly for facilitating assembly according to claim 1 wherein a first seal is provided between the bottom surface of the recess and the stationary seal member, the first seal surface being in pressure sealing engagement with the bottom surface of the recess and the stationary seal member respectively.

3. An end face seal assembly as claimed in claim 2 wherein a second seal is provided between the inner wall of the rotary seal member and the outer wall of the sleeve, the second seal being in surface compression sealing engagement with the sleeve and the rotary seal member respectively.

4. An end face seal device convenient to assemble according to claim 3, wherein a third seal ring is arranged between the inner wall of the shaft sleeve and the outer wall of the rotating shaft, and the surface of the third seal ring is respectively in press seal fit with the shaft sleeve and the rotating shaft.

5. The easy-to-assemble face seal assembly of claim 4, wherein said mounting slots are provided in a plurality and equiangularly circumferentially arrayed about a central axis of said rotary seal member.

6. The easy-to-assemble end face seal device according to claim 5, wherein the elastic member comprises a cylindrical spring, and two ends of the cylindrical spring are respectively abutted against the bottom surface of the mounting groove and the limiting ring.

7. The easy-to-assemble face seal device according to claim 6, wherein the retainer ring abuts against the rotary seal member in a circumferential direction of the rotary shaft.

8. The easy-to-assemble end face seal device according to claim 7, wherein a limiting hole is formed in a face, close to the limiting ring, of the rotary seal member, the limiting hole is located between two adjacent mounting grooves, a driving pin is inserted into the limiting hole and fixedly connected with the limiting ring, and an outer wall of the driving pin abuts against an inner wall of the limiting hole in the circumferential direction of the rotating shaft.

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