CN214093024U - Sealing structure - Google Patents

Abstract

The utility model provides a sealing structure, which comprises a shell, a sheath arranged at the inner side of the shell, and a sealing ring arranged between the shell and the sheath; the utility model discloses a sealing washer, including the sheath, be provided with spacing boss on the sheath and limit the boss down, be provided with spacing boss and lower spacing boss on the sheath, go up spacing boss with form the spacing groove between the boss down, the spacing groove with sealing washer looks adaptation, the sealing washer set up in the spacing inslot. The utility model provides a seal structure, through setting up the sheath to further set up spacing boss and lower spacing boss respectively at the upper and lower both ends of sheath, utilize spacing boss and lower spacing boss to the sealing washer along axial limiting displacement, avoid the sealing washer to take place to warp or the dislocation in the assembling process, thereby guarantee sealed effect, avoid sealed inefficacy.

Description

Sealing structure

Technical Field

The utility model relates to a sealed technical field particularly, relates to a seal structure.

Background

In the existing sealing structure of the sealing ring, the structure of the sealing ring is generally directly sealed by the compression of a sealing ring body; the sealing ring is directly compressed to seal, and the sealing ring is easily extruded and deformed or misplaced in the assembling process to cause sealing failure.

SUMMERY OF THE UTILITY MODEL

The utility model provides a problem easily lead to sealed inefficacy because of extrusion deformation or dislocation in the present sealing washer assembling process.

In order to solve the above problems, the present invention provides a sealing structure, which comprises a housing, a sheath disposed inside the housing, and a sealing ring disposed between the housing and the sheath; the utility model discloses a sealing washer, including the sheath, be provided with spacing boss on the sheath and limit the boss down, be provided with spacing boss and lower spacing boss on the sheath, go up spacing boss with form the spacing groove between the boss down, the spacing groove with sealing washer looks adaptation, the sealing washer set up in the spacing inslot.

Optionally, the length of the upper limit boss is greater than the length of the lower limit boss.

Optionally, the bottom of the sheath is of a tapered configuration.

Optionally, the bottom of spacing groove is provided with a plurality of recesses, the inboard of sealing washer is provided with a plurality of first sealed muscle, first sealed muscle with recess looks adaptation.

Optionally, a plurality of second sealing ribs are arranged on the outer side of the sealing ring.

Optionally, the length of the second sealing rib is greater than the length of the first sealing rib.

Optionally, a sealing ring limiting boss is arranged at the upper end of the sealing ring, and the sealing ring limiting boss abuts against the top end of the shell.

Optionally, the top end of the shell is provided with a conical structure.

Optionally, the compression amount range of the sealing ring is 15-25%

Compared with the prior art, the utility model provides a seal structure has following advantage:

the utility model provides a seal structure, through setting up the sheath to further set up spacing boss and lower spacing boss respectively at the upper and lower both ends of sheath, utilize spacing boss and lower spacing boss to the sealing washer along axial limiting displacement, avoid the sealing washer to take place to warp or the dislocation in the assembling process, thereby guarantee sealed effect, avoid sealed inefficacy.

Drawings

Fig. 1 is a schematic structural diagram of the sealing structure of the present invention;

fig. 2 is a schematic view of the assembly of the sealing structure of the present invention;

fig. 3 is a schematic structural diagram of the sealing ring of the present invention.

Description of reference numerals:

1-a shell; 2-a sheath; 21-upper limiting boss; 22-lower limit boss; 3-sealing ring; 31-a first sealing rib; 32-a second sealing rib; 33-sealing ring limit boss.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention, and all other embodiments obtained by those skilled in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "circumferential", "radial", and the like, indicate orientations and positional relationships based on the orientations and positional relationships shown in the drawings, and are used merely for the purpose of simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first" and "second" are used merely to simplify the description and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present disclosure, unless otherwise expressly stated or limited, a first feature "on" or "under" a first feature may comprise the first feature and a second feature in direct contact, or may comprise the first feature and the second feature not in direct contact but in contact with each other through another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. The first feature being "under," "below," and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or merely indicates that the first feature is at a lower level than the second feature.

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below.

At present, in a sealing structure for sealing through a sealing ring, the sealing ring is directly compressed to seal, and during the assembly process of the sealing structure, the sealing ring can be subjected to a large axial force, so that the sealing ring is easily extruded and deformed or misplaced under the action of the axial force, thereby causing sealing failure and influencing the sealing effect.

In order to solve the problem that sealing failure is easily caused by extrusion deformation or dislocation in the assembling process of the existing sealing ring, the utility model provides a sealing structure, as shown in fig. 1-3, the sealing structure comprises a shell 1, a sheath 2 arranged at the inner side of the shell 1, and a sealing ring 3 arranged between the shell 1 and the sheath 2; be provided with spacing boss 21 and lower spacing boss 22 on sheath 2, wherein go up spacing boss 21 and set up in the upper end of sheath 2, lower spacing boss 22 sets up in the lower extreme of sheath 2, go up spacing boss 21 and lower spacing boss 22 and all extend to one side at casing 1 place, go up and form the spacing groove between spacing boss 21 and the lower spacing boss 22, this spacing groove is the loop configuration, spacing groove and 3 looks adaptations of sealing washer, sealing washer 3 sets up in the spacing inslot.

In the process of using the sealing structure, the outer side of the sealing ring 3 is abutted against the shell 1, and the inner side of the sealing ring 3 is abutted against the sheath 2, so that the outer side of the sealing ring 3 is extruded by the shell 1, the inner side of the sealing ring 3 is extruded by the sheath 2, and sealing is realized by tightly attaching the sealing ring 3 to the shell 1 and the sheath 2. When the sealing structure is assembled, the sealing ring 3 can be firstly sleeved on the sheath 2, and then the shell 1 is further assembled with the assembled sheath 2 and the sealing ring 3.

Arranging a sealing ring 3 in the limiting groove, wherein the upper end of the sealing ring 3 is abutted with an upper limiting boss 21, and the lower end of the sealing ring 3 is abutted with a lower limiting boss 22; when the sealing ring 3 is extruded in the axial direction, the displacement of the upper end and the lower end is limited by the upper limiting boss 21 and the lower limiting boss 22 respectively, so that the sealing ring 3 is prevented from being extruded and deformed or dislocated, and the sealing effect of the sealing structure is ensured.

The utility model provides a seal structure, through setting up sheath 2 to further set up spacing boss 21 and lower spacing boss 22 respectively at the upper and lower both ends of sheath 2, utilize spacing boss 21 and lower spacing boss 22 to 3 along axial limiting displacement of sealing washer, avoid sealing washer 3 to take place to warp or misplace in the assembling process, thereby guarantee sealed effect, avoid sealed inefficacy.

In order to ensure the sealing effect, the sealing ring 3 has certain elasticity; in order to ensure the sealing effect between the inner side of the sealing ring 3 and the sheath 2, the inner diameter of the sealing ring 3 is preferably slightly smaller than the outer diameter of the sheath 3, so that after the sealing ring 3 is sleeved on the sheath 2, the sealing ring 3 can be tightly attached to the sheath 3; specifically, the seal ring 3 has two states, namely a manufacturing state and an assembling state, wherein the manufacturing state of the seal ring 3 is circular, and the assembling state of the seal ring 3 is elliptical; in the present application, the circumferential length of the seal ring 3 in the manufactured state is preferably 92% of the circumferential length in the assembled state.

When the sealing ring 3 is assembled with the sheath 2, the circumference of the sealing ring 3 needs to be stretched, so that the inner diameter of the stretched sealing ring 3 is larger than the outer diameter of the sheath 2, and then the sealing ring 3 with the increased inner diameter is sleeved on the sheath 2.

In order to reduce the difficulty of assembling the sealing ring 3 and the sheath 2, the length of the upper limiting boss 21 is preferably larger than that of the lower limiting boss 22; the length of the upper limit boss 21 and the length of the lower limit boss 22 both refer to the dimension in the horizontal direction.

By designing the length of the lower limiting boss 22 to be smaller than that of the upper limiting boss 21, when the sealing ring 3 is assembled with the sheath 2, the sealing ring 3 can be sleeved outside the sheath 2 from the lower limiting boss 22 with smaller length, so that the stretching amount of the sealing ring 3 during assembly can be reduced, and the assembly difficulty is further reduced; simultaneously, owing to further when assembling casing 1, casing 1 applys from ascending extrusion force down to sealing washer 3, will go up spacing boss 21 design for longer structure, can guarantee the limiting displacement to sealing washer 3 to when reducing the assembly degree of difficulty, can also avoid sealing washer 3 to warp or the dislocation, and then guarantee sealed effect.

Further, this application is the toper structure with the bottom of sheath 2 to in the outside of sheath 2 is located with sealing washer 3 cover to the guide through this toper structure, further reduces the assembly degree of difficulty.

Further, in order to improve the fit degree between the sealing ring 3 and the sheath 2, a plurality of grooves are preferably formed in the bottom of the limiting groove, a plurality of first sealing ribs 31 are arranged on the inner side of the sealing ring 3, and the first sealing ribs 31 are matched with the grooves; the first sealing rib 31 is a convex structure.

The bottom of the limiting groove specifically means that the sheath 2 is positioned on the outer wall in the limiting groove; the inner side of the sealing ring 3 specifically means the side of the sealing ring 3 close to the sheath 2.

When assembling sealing washer 3 and sheath 2, insert the recess of spacing tank bottom portion in the first sealed muscle 31 on the sealing washer 3 inboard to increase the joint strength between sealing washer 3 and the sheath 2, avoid in the assembling process the relative position between sealing washer 3 and the sheath 2 to change, guarantee sealed effect.

In order to ensure the sealing performance between the sealing ring 3 and the sheath 2, the first sealing rib 31 is preferably in a low R shape.

Further, a plurality of second sealing ribs 32 are preferably arranged on the outer side of the sealing ring 3, so that when the shell 1 is assembled, the second sealing ribs 32 are extruded through the shell 1, and the sealing between the sealing ring 3 and the shell 1 is realized by compressing the second sealing ribs 32; wherein the second sealing rib 32 is a convex structure.

Further, the length of the second sealed muscle 32 of preferred second of this application is greater than the length of first sealed muscle 31 to in the assembling process, improve the sealed effect between sealing washer 3 and the sheath 2 through first sealed muscle 31, simultaneously, because the sealed muscle 32 of longer second is easily by extrusion deformation, thereby can reduce the degree of difficulty of assembling casing 1.

It is further preferred that the second sealing rib 32 is a sharp-mouthed structure in this application to make the second sealing rib 32 easily compressed in the assembling process, and then reduce the assembling difficulty of the housing 1.

In the application, a sealing ring limiting boss 33 is preferably arranged at the upper end of the sealing ring 3, the sealing ring limiting boss 33 is abutted against the top end of the shell 1, the shell 1 is used for extruding the sealing ring limiting boss 33, and the shell 1 is further sealed with the top end of the sealing ring 3; meanwhile, the limit boss 33 of the sealing ring can also play a role in limiting, thereby avoiding the dislocation of the sealing ring 3 and ensuring the sealing effect.

In order to reduce the assembly difficulty, the inner side of the top end of the shell 1 is further preferably of a conical structure, so that the shell 1 is arranged on the outer side of the sealing ring 3 through the guiding of the conical structure in the process of assembling the shell 1.

In order to ensure the sealing effect of the sealing structure, the compression amount of the sealing ring 3 is preferably in the range of 15% -25% so that the sealing structure can keep good sealing effect; wherein the compression of the sealing ring 3 can be achieved by controlling the gap between the jacket 2 and the housing 1.

The utility model provides a sealing structure, through setting up spacing boss 21, lower spacing boss 22, form the axial compression fit between sealing washer 3 and sheath 2, through first sealed muscle 31 and recess, form the radial compression fit between sealing washer 3 and sheath 2, guarantee the sealed effect between sealing washer 3 and sheath 2, and avoid the relative position between sealing washer 3 and sheath 2 to change, and then avoid sealing inefficacy; the sealing ring limiting boss 33 is arranged to form axial compression fit between the sealing ring 3 and the shell 1; through setting up the sealed muscle 32 of second, form the radial compression cooperation between sealing washer 3 and the casing 1, guarantee the sealed effect between sealing washer 3 and the casing 1 to avoid the relative position between sealing washer 3 and the casing 1 to change, and then avoid sealed inefficacy.

Although the present disclosure has been described above, the scope of the present disclosure is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present disclosure, and such changes and modifications will fall within the scope of the present invention.

Claims (9)

1. A sealing structure is characterized by comprising a shell (1), a sheath (2) arranged on the inner side of the shell (1), and a sealing ring (3) arranged between the shell (1) and the sheath (2); be provided with upper limit boss (21) and lower limit boss (22) on sheath (2), upper limit boss (21) with form the spacing groove between lower limit boss (22), the spacing groove with sealing washer (3) looks adaptation, sealing washer (3) set up in the spacing inslot.

2. The sealing structure of claim 1, wherein the length of the upper limit projection (21) is greater than the length of the lower limit projection (22).

3. The sealing structure according to claim 2, characterized in that the bottom of the jacket (2) is of a conical configuration.

4. The sealing structure according to any one of claims 1 to 3, characterized in that the bottom of the limiting groove is provided with a plurality of grooves, the inner side of the sealing ring (3) is provided with a plurality of first sealing ribs (31), and the first sealing ribs (31) are matched with the grooves.

5. The sealing structure according to claim 4, characterized in that the outside of the sealing ring (3) is provided with a number of second sealing ribs (32).

6. The sealing structure according to claim 5, characterized in that the length of the second sealing rib (32) is greater than the length of the first sealing rib (31).

7. The sealing structure according to any one of claims 1 to 3, characterized in that the upper end of the sealing ring (3) is provided with a sealing ring limiting boss (33), and the sealing ring limiting boss (33) abuts against the top end of the shell (1).

8. The sealing structure of claim 7, characterized in that the inside of the top end of the housing (1) is of a conical structure.

9. A sealing arrangement according to claim 1, characterised in that the compression of the sealing ring (3) is in the range 15% to 25%.

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