CN215521971U - Bidirectional self-sealing device - Google Patents

Abstract

The application provides a bidirectional self-sealing device, which comprises a static ring set, a movable ring set, a snap ring and a spring, wherein the static ring set comprises a first static ring and a second static ring, the movable ring set comprises a first movable ring and a second movable ring, the first static ring, the second static ring, the first movable ring, the second movable ring and the snap ring are respectively sleeved on a rotating shaft, the snap ring is fixedly connected with the rotating shaft, the first movable ring and the second movable ring are respectively connected with the rotating shaft in an axial sliding manner, the snap ring is positioned between the first movable ring and the second movable ring, the first movable ring and the second movable ring are positioned between the first static ring and the second static ring, the first movable ring is abutted against the first static ring in the axial direction, the second movable ring is abutted against the second static ring in the axial direction, a through hole is arranged on the end surface of the snap ring, the through hole penetrates through the snap ring in the axial direction, the spring is positioned in the through hole, the spring is positioned between the first movable ring and the second movable ring, two ends of the spring are respectively abutted against the first movable ring and the second movable ring in the axial direction, the one side that the pivot was kept away from to the snap ring is equipped with the mounting groove, mounting groove and through-hole intercommunication.

Description

Bidirectional self-sealing device

Technical Field

The application relates to the technical field of sealing devices, in particular to a bidirectional self-sealing device.

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.

In the end face sealing device in the prior art, the fixed sealing element, the rotary sealing element and the elastic element need to be sequentially assembled to the rotating shaft one by one, the working efficiency is low, and for the bidirectional sealing device, after the fixed sealing element and the rotary sealing element are assembled to the rotating shaft, the elastic element cannot be assembled between the fixed sealing element and the rotary sealing element, the assembly efficiency is reduced due to the fact that the elastic element is assembled firstly, and the installation and operation are difficult.

Disclosure of Invention

The application provides a two-way self sealss device can assemble the elastic component to between fixed seal spare and the rotary seal spare again after fixed seal spare and rotary seal spare assemble to the pivot, improves assembly efficiency.

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

a bidirectional self-sealing device comprises a static ring set, a dynamic ring set, a snap ring and a spring, wherein the static ring set comprises a first static ring and a second static ring, the dynamic ring set comprises a first dynamic ring and a second dynamic ring, the first static ring, the second static ring, the first dynamic ring, the second dynamic ring and the snap ring are respectively sleeved on a rotating shaft, the snap ring is fixedly connected with the rotating shaft, the first dynamic ring and the second dynamic ring are respectively connected with the rotating shaft in an axial sliding manner, the snap ring is positioned between the first dynamic ring and the second dynamic ring, the first dynamic ring and the second dynamic ring are positioned between the first static ring and the second static ring, the first dynamic ring is abutted against the first static ring in an axial direction, the second dynamic ring is abutted against the second static ring in an axial direction, a through hole is arranged on the end surface of the snap ring, and the through hole penetrates through the snap ring in the axial direction, the spring is located in the through hole, the spring is located between the first rotating ring and the second rotating ring, the two ends of the spring are respectively abutted to the first rotating ring and the second rotating ring along the axial direction, the clamping ring is far away from one side of the rotating shaft is provided with a mounting groove, and the mounting groove is communicated with the through hole.

In some embodiments, the axial length of the mounting slot is less than the natural length of the spring.

In some embodiments, the axial length of the mounting groove is less than the axial length of the through hole.

In some embodiments, the mounting groove has a circumferential width about the center axis of the snap ring that is greater than the diameter of the spring.

In some embodiments, the through holes are distributed in a circumferential array around the central axis of the snap ring, and the mounting grooves are arranged corresponding to the through holes.

In some embodiments, the included angle between the adjacent through holes around the central axis of the snap ring is less than 8 degrees.

In some embodiments, a first sleeve is fixedly connected to one end of the snap ring close to the first rotating ring, the diameter of the inner wall of the first sleeve is larger than the diameter of the outer wall of the first rotating ring, and one end of the first rotating ring close to the snap ring is located inside the first sleeve.

In some embodiments, a second sleeve is fixedly connected to one end of the snap ring close to the second movable ring, the diameter of the inner wall of the second sleeve is larger than the diameter of the outer wall of the second movable ring, and one end of the second movable ring close to the snap ring is located inside the second sleeve.

Has the advantages that:

the application provides a two-way self sealing device, in the installation, insert first rotating ring and second rotating ring respectively from the port of first cutting ferrule and second cutting ferrule, then compress the spring and insert the mounting groove, with the spring through-hole of impressing, the automatic extension of spring and respectively with first rotating ring and second rotating ring butt, at last with first rotating ring, the second rotating ring, snap ring and the whole cup joint of spring in the pivot, it is more convenient for prior art assembly, assembly efficiency is higher. The spring rear-loading assembly mode can also improve the symmetry of the first movable ring and the second movable ring after assembly, so that the working process is more stable, and the noise is lower. The first clamping sleeve and the second clamping sleeve can respectively limit the first movable ring and the second movable ring to move along the radial direction, so that the clamping ring, the first movable ring and the second movable ring can be assembled into a whole independently. A plurality of springs evenly distributed on the snap ring circumferencial direction can provide more even pretightning force to the terminal surface different positions of first rotating ring and second rotating ring, makes the pressure that the fitting surface (sealed face) different positions of first rotating ring and first quiet ring received more even, makes the pressure that the fitting surface (sealed face) different positions of second rotating ring and second quiet ring received more even, reduces local wear, improves work stationarity.

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 diagram of a bidirectional self-sealing device in an embodiment of the present application.

Description of reference numerals:

110. a snap ring; 111. a through hole; 112. mounting grooves; 120. a first stationary ring; 130. a second stationary ring;

200. a spring;

310. a first rotating ring; 320. a second rotating ring;

410. a first ferrule; 420. a second ferrule;

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, an embodiment of the present application provides a bidirectional self-sealing device, including a stationary ring set, a movable ring set, a snap ring 110, and a spring 200, where the stationary ring set includes a first stationary ring 120 and a second stationary ring 130, the movable ring set includes a first movable ring 310 and a second movable ring 320, the first stationary ring 120, the second stationary ring 130, the first movable ring 310, the second movable ring 320, and the snap ring 110 are respectively sleeved on a rotating shaft 500, the snap ring 110 is fixedly connected to the rotating shaft 500, the first movable ring 310 and the second movable ring 320 are respectively connected to the rotating shaft 500 in an axial sliding manner, the snap ring 110 is located between the first movable ring 310 and the second movable ring 320, the first movable ring 310 and the first stationary ring 120 are axially abutted, the second movable ring 320 and the second stationary ring 130 are axially abutted, a through hole 111 is formed in an end face of the snap ring 110, the through hole 111 axially penetrates through the snap ring 110, and the spring 200 is located in the through hole 111, the spring 200 is located between the first rotating ring 310 and the second rotating ring 320, two ends of the spring 200 are respectively abutted to the first rotating ring 310 and the second rotating ring 320 along the axial direction, one surface of the clamping ring 110, which is far away from the rotating shaft 500, is provided with a mounting groove 112, and the mounting groove 112 is communicated with the through hole 111.

In some embodiments, the axial length of the mounting slot 112 is less than the natural length of the spring 200.

In some embodiments, the axial length of the mounting groove 112 is less than the axial length of the through hole 111.

In some embodiments, the mounting groove 112 has a circumferential width about the central axis of the snap ring 110 that is greater than the diameter of the spring 200.

In some embodiments, the through holes 111 are distributed in a circumferential array around the central axis of the snap ring 110, and the mounting grooves 112 are disposed corresponding to the through holes 111.

In some embodiments, the angle between adjacent through holes 111 around the central axis of the snap ring 110 is less than 8 degrees.

In some embodiments, a first ferrule 410 is fixedly attached to an end of the snap ring 110 near the first rotating ring 310, the diameter of the inner wall of the first ferrule 410 is larger than the diameter of the outer wall of the first rotating ring 310, and the end of the first rotating ring 310 near the snap ring 110 is located inside the first ferrule 410.

In some embodiments, a second ferrule 420 is fixedly connected to an end of the snap ring 110 close to the second rotating ring 320, a diameter of an inner wall of the second ferrule 420 is larger than a diameter of an outer wall of the second rotating ring 320, and an end of the second rotating ring 320 close to the snap ring 110 is located inside the second ferrule 420.

In the installation process of the bidirectional self-sealing device provided by the embodiment, the first movable ring 310 and the second movable ring 320 are respectively inserted from the ports of the first clamping sleeve 410 and the second clamping sleeve 420, then the spring 200 is compressed and inserted into the mounting groove 112, the spring 200 is pressed into the through hole 111, the spring 200 automatically extends and is respectively abutted against the first movable ring 310 and the second movable ring 320, and finally the first movable ring 310, the second movable ring 320, the clamping ring 110 and the spring 200 are integrally sleeved on the rotating shaft 500, so that the assembly is more convenient and the assembly efficiency is higher compared with the prior art. The rear-loading assembly mode of the spring 200 can also improve the symmetry of the assembled first movable ring 310 and the second movable ring 320, so that the working process is more stable and the noise is lower. First and second ferrules 410 and 420 may restrict radial movement of first and second rotating rings 310 and 320, respectively, facilitating independent assembly of snap ring 110 with first and second rotating rings 310 and 320 as a unit. A plurality of springs 200 evenly distributed on snap ring 110 circumferencial direction can provide more even pretightning force to the terminal surface different positions of first rotating ring 310 and second rotating ring 320, makes the pressure that the fitting surface (sealed face) different positions of first rotating ring 310 and first quiet ring 120 received more even, makes the pressure that the fitting surface (sealed face) different positions of second rotating ring 320 and second quiet ring 130 received more even, reduces local wear, improves job stabilization nature.

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. A bidirectional self-sealing device is characterized by comprising a static ring set, a dynamic ring set, a snap ring and a spring, wherein the static ring set comprises a first static ring and a second static ring, the dynamic ring set comprises a first dynamic ring and a second dynamic ring, the first static ring, the second static ring, the first dynamic ring, the second dynamic ring and the snap ring are respectively sleeved on a rotating shaft, the snap ring is fixedly connected with the rotating shaft, the first dynamic ring and the second dynamic ring are respectively connected with the rotating shaft in an axial sliding manner, the snap ring is positioned between the first dynamic ring and the second dynamic ring, the first dynamic ring and the second dynamic ring are positioned between the first static ring and the second static ring, the first dynamic ring is abutted against the first static ring in an axial direction, the second dynamic ring is abutted against the second static ring in an axial direction, a through hole is arranged on the end face of the snap ring, and the through hole axially penetrates through the snap ring, the spring is located in the through hole, the spring is located between the first rotating ring and the second rotating ring, the two ends of the spring are respectively abutted to the first rotating ring and the second rotating ring along the axial direction, the clamping ring is far away from one side of the rotating shaft is provided with a mounting groove, and the mounting groove is communicated with the through hole.

2. The bi-directional self-sealing arrangement of claim 1, wherein an axial length of the mounting groove is less than a natural length of the spring.

3. The bi-directional self-sealing arrangement of claim 2, wherein the axial length of the mounting groove is less than the axial length of the through-hole.

4. The bi-directional self-sealing device of claim 1 wherein the mounting groove has a circumferential width about the snap ring axis that is greater than the diameter of the spring.

5. The bidirectional self-sealing device according to any one of claims 1 to 4, wherein the through holes are distributed in a circumferential array around a central axis of the snap ring, and the mounting grooves are disposed corresponding to the through holes.

6. The bi-directional self-sealing device of claim 5, wherein an angle between adjacent through holes around a central axis of the snap ring is less than 8 degrees.

7. The bidirectional self-sealing device according to any one of claims 1 to 4 or 6, wherein a first ferrule is fixedly connected to an end of the snap ring close to the first rotating ring, a diameter of an inner wall of the first ferrule is larger than a diameter of an outer wall of the first rotating ring, and an end of the first rotating ring close to the snap ring is located inside the first ferrule.

8. The bidirectional self-sealing device as recited in claim 7, wherein a second ferrule is fixedly coupled to an end of the snap ring proximate to the second movable ring, an inner wall diameter of the second ferrule being greater than an outer wall diameter of the second movable ring, an end of the second movable ring proximate to the snap ring being positioned within the second ferrule.

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