High-strength pneumatic rubber sealing ring with long service life

Abstract

The utility model discloses a high-strength pneumatic rubber sealing ring with long service life, which belongs to the technical field of rubber sealing rings, and comprises two structural rings which are symmetrically arranged, and the axes of the two structural rings coincide; the inner ring body is a hollow O-shaped ring, the inner ring body is clamped between the two structural rings, and the surface of the inner ring body extends to the inner sides of the structural rings; according to the pneumatic hollow O-shaped ring, the distance between the two structural rings is adjusted through the adjusting piece, after the distance between the structural rings is shortened, under the supporting effect of the supporting ring, the inner ring body and the outer ring body expand towards the inner sides and the outer sides of the structural rings respectively, so that the inner ring body and the outer ring body firmly abut against the sealing face, and the pneumatic hollow O-shaped ring is not prone to fatigue; the service life of the sealing ring is long, expansion of the inner ring body and the outer ring body changes along with the overall width of the sealing ring, then the sealing ring is suitable for a large sealing gap, and the universality of the rubber sealing ring is greatly improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of rubber sealing rings, in particular to a high-strength pneumatic rubber sealing ring with a long service life. Background Art

[0002] The rubber sealing ring is an annular cover composed of one or more parts, which is fixed on a ring or washer of the bearing and contacts with another ring or washer or forms a narrow labyrinth gap to prevent the leakage of lubricating oil and the intrusion of foreign objects.

[0003] At present, the one-piece rubber sealing ring will produce fatigue after long-term use, resulting in poor sealing performance between the rubber sealing ring and the sealing surface, and different sizes of sealing gaps require the use of rubber sealing rings of different widths, which makes the versatility of the rubber sealing ring poor. Utility Model Content

[0004] The utility model aims to solve the above problems and provides a high-strength pneumatic rubber sealing ring with a long service life.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solution: a high-strength pneumatic rubber sealing ring with a long service life, which comprises:

[0006] Two structural rings are symmetrically arranged, and the axes of the two structural rings coincide with each other;

[0007] An inner ring body, which is a hollow O-ring, is clamped between the two structural rings, and the surface of the inner ring body extends to the inner side of the structural rings;

[0008] An outer ring body, which is a hollow O-ring, is clamped between the two structural rings, and the surface of the outer ring body extends to the outside of the structural rings;

[0009] A support ring, which is a hollow circular ring, is sandwiched between the two structural rings, and the support ring abuts against the inner ring body and the outer ring body at the same time;

[0010] A plurality of adjustment members pass through the support ring and connect the two structural rings.

[0011] As a further description of the above technical solution:

[0012] The support ring is provided with two first arc-shaped positioning grooves, and the inner ring body and the outer ring body are respectively inserted into the two first arc-shaped positioning grooves.

[0013] As a further description of the above technical solution:

[0014] The structure ring is provided with two second arc-shaped positioning grooves, and the inner ring body and the outer ring body are respectively inserted into the two second arc-shaped positioning grooves.

[0015] As a further description of the above technical solution:

[0016] The adjusting member includes a first bolt and a second bolt, the first bolt passes through one of the structural rings and extends to the interior of the support ring, the second bolt passes through another of the structural rings and extends to the inner wall of the support ring, and the screw rod at the end of the first bolt is threaded into the screw hole at the end of the second bolt.

[0017] As a further description of the above technical solution:

[0018] A sinking groove is provided on the surface of the structural ring, and the screw heads of the first bolt and the second bolt are both arranged in the sinking groove, and the thickness of the screw head is not greater than the depth of the sinking groove.

[0019] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0020] 1. In the utility model, the distance between the two structural rings is adjusted by the adjusting member. After the distance between the structural rings is reduced, the inner ring body and the outer ring body expand toward the inner side and the outer side of the structural ring respectively under the support of the support ring, so that the inner ring body and the outer ring body firmly press against the sealing surface, and the pneumatic hollow O-ring is not easy to fatigue, so that the service life of the sealing ring is long. The expansion of the inner ring body and the outer ring body is accompanied by the change of the width of the entire sealing ring, so that the sealing ring is suitable for a larger sealing gap, which greatly improves the versatility of the rubber sealing ring.

[0021] 2. In the utility model, the two structural rings are brought closer to each other by screwing the first bolt and the second bolt. Under the supporting action of the supporting ring, the volume of the part of the inner ring body protruding from the inner side of the structural ring after being squeezed increases, and the volume of the part of the outer ring body protruding from the outer side of the structural ring after being squeezed increases, thereby increasing the force acting on the sealing surface of the inner ring body and the outer ring body, ensuring the sealing of the structure. At the same time, the overall width specification of the sealing ring is also changed, so that the sealing ring can be used in a larger sealing gap, greatly improving the versatility of the sealing ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The figure is a schematic diagram of the overall structure of a high-strength pneumatic rubber sealing ring with a long service life.

[0023] Figure 2 The figure is a cross-sectional view of a high-strength pneumatic rubber sealing ring with a long service life.

[0024] Figure 3 for Figure 2A partial enlarged view of part A.

[0025] Figure 4 An exploded view of a high-strength pneumatic rubber seal with a long service life.

[0026] Legend:

[0027] 1. Structural ring; 2. Inner ring body; 3. Outer ring body; 4. Support ring; 5. Adjustment member; 51. First bolt; 52. Second bolt; 6. First arc-shaped positioning groove; 7. Second arc-shaped positioning groove; 8. Sinking groove. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. 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 embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] See also Figure 1-4 The utility model provides a technical solution: a high-strength pneumatic rubber sealing ring with a long service life, comprising:

[0030] Two structural rings 1 are symmetrically arranged, and the axes of the two structural rings 1 coincide with each other;

[0031] An inner ring body 2, which is a hollow O-ring, is clamped between the two structural rings 1, and the surface of the inner ring body 2 extends to the inner side of the structural ring 1;

[0032] The outer ring body 3 is a hollow O-ring, the outer ring body 3 is stuck between the two structural rings 1, and the surface of the outer ring body 3 extends to the outside of the structural ring 1;

[0033] A support ring 4, which is a hollow circular ring, is sandwiched between the two structural rings 1, and the support ring 4 simultaneously abuts against the inner ring body 2 and the outer ring body 3;

[0034] A plurality of adjustment members 5 passing through the support ring 4 and connecting the two structural rings 1;

[0035] The support ring 4 is provided with two first arc-shaped positioning grooves 6, and the inner ring body 2 and the outer ring body 3 are respectively inserted into the two first arc-shaped positioning grooves 6 to ensure that the inner ring body 2 and the outer ring body 3 are stably installed and the deformation direction is fixed;

[0036] The structure ring 1 is provided with two second arc-shaped positioning grooves 7, and the inner ring body 2 and the outer ring body 3 are respectively inserted into the two second arc-shaped positioning grooves 7 to ensure that the inner ring body 2 and the outer ring body 3 are stably installed and the deformation direction is fixed;

[0037] The adjusting member 5 comprises a first bolt 51 and a second bolt 52. The first bolt 51 passes through one of the structural rings 1 and extends to the inside of the support ring 4. The second bolt 52 passes through the other structural ring 1 and extends to the inner wall of the support ring 4. The screw at the end of the first bolt 51 is screwed into the screw hole at the end of the second bolt 52. The first bolt 51 and the second bolt 52 are screwed to make the two structural rings 1 approach each other. Under the support of the support ring 4, the volume of the part of the inner ring body 2 protruding from the inner side of the structural ring 1 increases after being squeezed, and the volume of the part of the outer ring body 3 protruding from the outer side of the structural ring 1 increases after being squeezed, thereby increasing the force acting on the sealing surface of the inner ring body 2 and the outer ring body 3, thereby ensuring the sealing performance of the structure. At the same time, the overall width specification of the sealing ring is also changed, so that the sealing ring can be used in a larger sealing gap, which greatly improves the versatility of the sealing ring.

[0038] A sinking groove 8 is formed on the surface of the structural ring 1 , and the screw heads of the first bolt 51 and the second bolt 52 are both disposed in the sinking groove 8 . The thickness of the screw heads is not greater than the depth of the sinking groove 8 .

[0039] Working principle: First, when in use, the entire pneumatic rubber sealing ring is adjusted according to the size of the sealing gap, that is, the first bolt 51 and the second bolt 52 are screwed, and the screw at the end of the first bolt 51 is screwed into the screw hole at the end of the second bolt 52. Secondly, multiple adjustment parts 5 are adjusted in sequence to make the two structural rings 1 approach each other. Under the support of the support ring 4, the volume of the part of the inner ring body 2 protruding from the inner side of the structural ring 1 after being squeezed increases, and the volume of the part of the outer ring body 3 protruding from the outer side of the structural ring 1 after being squeezed increases, and the overall width specification of the sealing ring is also changed. Finally, the inner ring body 2 is put on the workpiece, the inner ring body 2 is against the surface of the workpiece, and the outer ring body 3 is against the inner wall of the other workpiece, which has a sealing effect.

[0040] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A high-strength pneumatic rubber sealing ring with a long service life, characterized in that: include: Two structural rings (1) are symmetrically arranged, and the axes of the two structural rings (1) coincide with each other; An inner ring body (2) which is a hollow O-ring, the inner ring body (2) being stuck between the two structural rings (1), and the surface of the inner ring body (2) extending to the inner side of the structural rings (1); An outer ring body (3) which is a hollow O-ring, the outer ring body (3) is stuck between the two structural rings (1), and the surface of the outer ring body (3) extends to the outside of the structural rings (1); A support ring (4) which is a hollow circular ring. The support ring (4) is sandwiched between the two structural rings (1), and the support ring (4) simultaneously abuts against the inner ring body (2) and the outer ring body (3); A plurality of adjustment members (5) pass through the support ring (4) and connect the two structural rings (1).

2. A high-strength pneumatic rubber seal ring with a long service life according to claim 1, characterized in that: The support ring (4) is provided with two first arc-shaped positioning grooves (6), and the inner ring body (2) and the outer ring body (3) are respectively inserted into the two first arc-shaped positioning grooves (6).

3. A high-strength pneumatic rubber seal ring with a long service life according to claim 2, characterized in that: The structural ring (1) is provided with two second arc-shaped positioning grooves (7), and the inner ring body (2) and the outer ring body (3) are respectively inserted into the two second arc-shaped positioning grooves (7).

4. A high-strength pneumatic rubber seal ring with a long service life according to claim 3, characterized in that: The adjusting member (5) comprises a first bolt (51) and a second bolt (52), wherein the first bolt (51) passes through one of the structural rings (1) and extends to the interior of the supporting ring (4), and the second bolt (52) passes through another of the structural rings (1) and extends to the inner wall of the supporting ring (4), and the screw rod at the end of the first bolt (51) is screwed into the screw hole at the end of the second bolt (52).

5. A high-strength pneumatic rubber seal ring with a long service life according to claim 4, characterized in that: A sinking groove (8) is provided on the surface of the structural ring (1), and the screw heads of the first bolt (51) and the second bolt (52) are both arranged in the sinking groove (8), and the thickness of the screw heads is not greater than the depth of the sinking groove (8).

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