Sealing sleeve

Abstract

The utility model provides a sealing sleeve, relates to the technical field of sealing elements, and solves the technical problems of short sealing line and poor sealing effect in the prior art. The sealing sleeve comprises a first sealing part and a second sealing part, the first sealing part and the second sealing part are both annular and are coaxially connected, and a first inner annular face, a first outer annular face and the end face, away from the second sealing part, of the first sealing part are all used for abutting against three groove walls of a groove body in the top of the cover body. At least two annular grooves matched with the annular protrusions on the cover body are formed in the second inner ring face of the second sealing part, the second inner ring face is used for abutting against the outer ring wall of the cover body, an annular groove and a contact face are arranged on the second outer ring face of the second sealing part, the annular groove is used for being connected with the annular protrusion at the opening end of the barrel in a clamped mode, and the contact face abuts against the inner wall of the opening end. The sealing line is lengthened through the arrangement mode of the first sealing part, the annular groove, the annular groove and the contact face, and therefore the sealing effect is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing elements, in particular to a sealing sleeve. Background Art

[0002] Seal is a common component or measure used to prevent fluid or solid particles from passing through adjacent mating surfaces. Currently, existing sealing rings and sealing sleeves are mostly made of rubber material, which achieve the desired sealing purpose through their own elasticity and close contact between adjacent mating surfaces. However, the contact between such sealing rings and the mating surfaces in the current prior art is mostly a single plane or arc surface, and the sealing line is relatively short, resulting in poor sealing effect.

[0003] Secondly, the sealing ring is mostly arranged in a groove of the joint surface or in a contact groove at one end. The sealing ring does not have a connection portion with the joint surface and is easy to fall off during actual use. Utility Model Content

[0004] The purpose of the utility model is to provide a sealing sleeve, which solves the technical problem of short sealing line and poor sealing effect in the prior art. The preferred technical solution among the many technical solutions provided by the utility model can produce many technical effects as described below.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] The sealing sleeve provided by the utility model comprises a first sealing part and a second sealing part, the first sealing part and the second sealing part are both annular and coaxially connected, the first inner annular surface, the first outer annular surface and the end surface away from the second sealing part of the first sealing part are all used to press against the three-sided groove walls of the groove body at the top of the cover body, at least two annular grooves adapted to the annular protrusion on the cover body are arranged on the second inner annular surface of the second sealing part, the second inner annular surface is used to press against the outer annular wall of the cover body, an annular groove and a contact surface are arranged on the second outer annular surface of the second sealing part, the annular groove is used to clamp the annular protrusion at the open end of the cylinder, and the contact surface presses against the inner wall of the open end.

[0007] Preferably, the first sealing portion and the second sealing portion are integrally formed.

[0008] Preferably, the annular groove is arranged close to the first sealing portion.

[0009] Preferably, the annular groove is a groove body with a rectangular axial cross section.

[0010] Preferably, the contact surface is a conical surface, and the conical surface gradually approaches the axis of the second sealing portion in a direction from an end close to the first sealing portion to an end away from the first sealing portion.

[0011] Preferably, the second sealing portion has a warped edge at one end away from the first sealing portion, the inner annular surface of the warped edge gradually moves away from the axis of the second sealing portion from close to the first sealing portion to away from the first sealing portion, and the outer annular surface of the warped edge is cylindrical and coaxial with the axis of the second sealing portion.

[0012] Preferably, an inner diameter of an end of the first inner annular surface close to the second sealing portion is smaller than an inner diameter of an end of the first inner annular surface far from the second sealing portion.

[0013] Preferably, arc-shaped protrusions are formed between the annular grooves.

[0014] This application adopts the above technical solution, which has at least the following beneficial effects:

[0015] The sealing sleeve comprises a first sealing part and a second sealing part, the first sealing part and the second sealing part are both annular and coaxially connected, the first inner ring surface, the first outer ring surface and the end surface away from the second sealing part of the first sealing part are all used to press against the three groove walls of the groove body at the top of the cover body, the first sealing part and the annular groove at the top of the cover body are in contact and sealed on three sides, ensuring a good sealing effect, and at least two annular grooves adapted to the annular protrusions on the cover body are arranged on the second inner ring surface of the second sealing part, the annular grooves strengthen the sealing effect between the sealing sleeve and the outer wall of the cover body, the second inner ring surface is used to press against the outer ring wall of the cover body, the second outer ring surface of the second sealing part is provided with an annular groove and a contact surface, the annular groove is used to clamp the annular protrusion at the opening end of the cylinder body, that is, the connection of the sealing sleeve is realized through the annular groove and the annular protrusion, and the sealing effect can be further achieved through the close fit between the annular protrusion and the annular groove, the contact surface is pressed against the inner wall of the opening end, and the contact surface further improves the sealing effect between the cylinder body. The sealing line is extended to the maximum extent by the arrangement of the first sealing part, the annular groove, the annular groove and the contact surface, thereby ensuring a better sealing effect.

[0016] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the axial cross-section structure of the sealing sleeve provided by an embodiment of the utility model;

[0019] Figure 2 It is a schematic diagram of the partial structure of the sealing sleeve shaft cross section provided by the embodiment of the utility model;

[0020] Figure 3 It is a schematic diagram of the main structure of the sealing sleeve provided in an embodiment of the utility model.

[0021] In the figure, 1 is the first sealing part; 2 is the second sealing part; 3 is the first inner ring surface; 4 is the first outer ring surface; 5 is the end surface; 6 is the second inner ring surface; 7 is the annular groove; 8 is the second outer ring surface; 9 is the annular groove; 10 is the contact surface; 11 is the warped edge. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.

[0023] The specific embodiment of the utility model provides a sealing sleeve, which is an annular sleeve structure, combined with the attached Figure 1 - Attachment Figure 3 As shown, it mainly includes a first sealing part 1 and a second sealing part 2;

[0024] Among them, the first sealing part 1 and the second sealing part 2 are both annular and coaxially connected, the first sealing part 1 and the second sealing part 2 are connected to each other or the first sealing part 1 and the second sealing part 2 are integrally formed. The sealing sleeve in the present application can be made of rubber material, and the rubber can be formed by injection molding or compression molding.

[0025] Specifically, the first sealing portion 1 comprises a first inner annular surface 3, a first outer annular surface 4 and an end surface 5 away from the second sealing portion 2. The first inner annular surface 3, the first outer annular surface 4 and the end surface 5 are all used to abut against the three groove walls of the groove body at the top of the cover body. The top of the cover body is bent outward and downward to form an annular groove. The three outer side surfaces of the first sealing portion 1 abut against the three inner wall surfaces of the annular groove. The sealing line is relatively long, thereby ensuring a good sealing effect.

[0026] Moreover, at least two annular grooves 7 adapted to the annular protrusions on the outer wall of the cover are arranged on the second inner annular surface 6 of the second sealing portion 2 of the present application, and the annular grooves 7 are tightly fitted with the annular protrusions on the outer wall of the cover, and the second inner annular surface 6 is used to press against the outer annular wall of the cover, thereby further increasing the length of the sealing line;

[0027] An annular groove 9 and a contact surface 10 are provided on the second outer ring surface 8 of the second sealing portion 2. The annular groove 9 is used to clamp the annular convexity at the open end of the cylinder. The annular convexity is an annular convexity structure at the top of the cylinder extending toward the inside of the cylinder. The annular convexity and the annular groove 9 are tightly matched, which can realize the connection between the sealing sleeve and the cylinder on the one hand and increase the length of the sealing line on the other hand. The contact surface 10 is pressed against the inner wall of the open end, and the contact surface 10 is then sealed and connected to the inner wall of the cylinder.

[0028] The present application adopts the above-mentioned sealing sleeve structure, and makes the sealing line of the sealing sleeve on the adjacent joint surface longer through the first sealing part 1, the annular groove 7, the annular groove 9 and the contact surface 10, so as to ensure a good sealing effect.

[0029] Secondly, the connection between the annular groove 9 and the annular protrusion makes it difficult for the sealing sleeve to fall off when the cover is disassembled after being installed.

[0030] In a specific embodiment of the present application, the annular groove 9 is arranged close to the first sealing portion 1, so that when the cover body is buckled onto the cylinder body, it can be as close to the side wall of the cylinder body as possible, so that the entire sealing sleeve is in contact with the cover body and the cylinder body.

[0031] In some embodiments, the annular groove 9 can be a groove body with a rectangular axial cross-section. When the groove body with a rectangular cross-section is connected to the matching annular convexity, it can ensure a larger sealing line and a stronger connection strength to prevent the sealing sleeve from falling off.

[0032] Even if a trough body with other cross-sectional shapes is used, such as a trough body structure with an arc-shaped wall such as a semi-cylindrical shape, it can also play an anti-slip effect as long as it is set deeper.

[0033] In some embodiments, the contact surface 10 can be a conical surface, which gradually approaches the axis of the second sealing part 2 from one end close to the first sealing part 1 to one end away from the first sealing part 1. This conical contact surface is adapted to the opening of the corresponding inverted cone cylinder.

[0034] In some embodiments, the end of the second sealing portion 2 away from the first sealing portion 1 has a warped edge 11, and the warped edge 11 is annular. The inner annular surface of the warped edge 11 gradually moves away from the axis of the second sealing portion 2 from close to the first sealing portion 1 to away from the first sealing portion 1. The outer annular surface of the warped edge 11 is cylindrical and coaxial with the axis of the second sealing portion 2. The thickness of the end of the warped edge 11 away from the first sealing portion 1 is narrower, so as to avoid blocking internal materials.

[0035] In some embodiments, the inner diameter of one end of the first inner annular surface 3 close to the second sealing portion 2 is smaller than the inner diameter of the end of the first inner annular surface 3 away from the second sealing portion 2, so that the elasticity of the sealing sleeve itself can be used to press against the outer wall of the cover body, thereby improving the seal between the sealing sleeve and the cover body.

[0036] In some embodiments, there are arc-shaped protrusions between the annular grooves 7, and the grooves between the arc-shaped protrusions and the protrusions on the outer wall of the cover body are adapted to further extend the sealing line to ensure the sealing effect.

[0037] In the present utility model, the terms "one embodiment", "some embodiments", "examples", "specific examples", "some examples", etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0038] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A sealing sleeve, which has an annular sleeve structure, characterized in that: It includes a first sealing part and a second sealing part, the first sealing part and the second sealing part are both annular and coaxially connected, the first inner annular surface, the first outer annular surface and the end surface away from the second sealing part of the first sealing part are all used to press against the three groove walls of the groove body at the top of the cover body, at least two annular grooves adapted to the annular protrusion on the cover body are arranged on the second inner annular surface of the second sealing part, the second inner annular surface is used to press against the outer annular wall of the cover body, an annular groove and a contact surface are arranged on the second outer annular surface of the second sealing part, the annular groove is used to clamp the annular protrusion at the open end of the cylinder, and the contact surface presses against the inner wall of the open end.

2. The sealing sleeve according to claim 1, characterized in that: The first sealing portion and the second sealing portion are integrally formed.

3. The sealing sleeve according to claim 1, characterized in that: The annular groove is disposed close to the first sealing portion.

4. The sealing sleeve according to claim 1, characterized in that: The annular groove is a groove body with a rectangular axial cross section.

5. The sealing sleeve according to claim 1, characterized in that: The contact surface is a conical surface, and the conical surface gradually approaches the axis of the second sealing portion in a direction from an end close to the first sealing portion to an end away from the first sealing portion.

6. The sealing sleeve according to claim 1, characterized in that: The second sealing portion has a warped edge at one end away from the first sealing portion, the inner annular surface of the warped edge gradually moves away from the axis of the second sealing portion from close to the first sealing portion to away from the first sealing portion, and the outer annular surface of the warped edge is cylindrical and coaxial with the axis of the second sealing portion.

7. The sealing sleeve according to claim 1, characterized in that: An inner diameter of an end of the first inner annular surface close to the second sealing portion is smaller than an inner diameter of an end of the first inner annular surface far from the second sealing portion.

8. The sealing sleeve according to claim 1, characterized in that: There are arc-shaped protrusions between the annular grooves.

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