High-pressure-resistant rubber O-shaped ring

Abstract

The utility model discloses a high-pressure-resistant rubber O-shaped ring, which belongs to the technical field of O-shaped rubber sealing rings, and comprises a sealing ring outer ring, a metal ring is arranged in the sealing ring outer ring, the sealing ring outer ring is made of fluororubber, a plurality of rubber spacers are fixedly sleeved on the outer wall of the metal ring, and the rubber spacers are sleeved on the outer wall of the metal ring. By arranging the compression-resistant mechanism, local pressure can be effectively absorbed, the sealing ring outer ring is prevented from being broken, when the sealing ring outer ring is subjected to excessive pressure, the pressure is transmitted to the connecting rod through the semi-arc block, then the adjusting block is driven to move away from the axis of the damping rod, and therefore the pressure is dispersed; the damping rod and the spring act together, extrusion force is absorbed, local stress of the outer ring of the sealing ring is reduced, the fracture risk is reduced, in addition, excessive movement of the damping rod is effectively prevented through the design of the limiting protruding block and the limiting groove, and it is guaranteed that the spring keeps elastic.

Description

TECHNICAL FIELD

[0001] The utility model relates to O type rubber seal ring technical field, more specifically, relate to a kind of high-pressure-resistant rubber O ring. BACKGROUND

[0002] Rubber O ring is a very common and multipurpose sealing element, widely used in various industrial fields, especially in the equipment and system that need to prevent liquid or gas leakage, O ring design has simple geometric shape, it is made of a circular ring shape rubber, cross section presents circle, this unique structure lets O ring can be in close contact with the mating metal surface after installation, by its elastic expansion to fill small gap, to form a reliable sealing effect, prevent liquid, gas or other material leakage.

[0003] The O type rubber seal ring disclosed in the present application includes an O type rubber seal ring and a sleeve ring, a reinforcing ring is fixedly installed on the surface of the O type rubber seal ring, a control assembly is arranged on the surface of the sleeve ring, a driven assembly is arranged in the reinforcing ring, and the control assembly includes a round rod, a flat rod, a clamping block, a hole slot, a mounting slot, and a mounting piece.

[0004] Although the above-mentioned sealing ring has certain elasticity and pressure resistance to achieve sealing effect, when it is locally extruded during use, the local area may be subjected to excessive stress, and the local excessive compression may cause excessive stretching and compression deformation of the rubber, which may cause the molecular chain of the rubber to gradually break and form micro cracks. The cracks will expand under repeated pressure, eventually leading to fatigue rupture of the sealing ring, so that the sealing ring loses its original sealing performance. SUMMARY

[0005] 1. Technical problem to be solved

[0006] In view of the problems existing in the prior art, the utility model aims to provide a high-pressure-resistant rubber O ring, which can absorb local pressure and prevent the outer ring of the sealing ring from breaking. When the outer ring is subjected to excessive pressure, the pressure is transmitted to the connecting rod through the semi-arc block, the adjusting block is driven to disperse the pressure, the damping rod and the spring jointly absorb the extrusion force, and the local stress is reduced. The limiting convex block and the limiting groove prevent the damping rod from moving excessively, ensure the elasticity of the spring, enhance the system stability and sealing effect.

[0007] 2. Technical scheme

[0008] To solve the above problems, the present invention adopts the following technical solution.

[0009] A high-pressure resistant rubber O-ring includes a sealing ring outer ring, a metal ring disposed inside the sealing ring outer ring, the sealing ring outer ring being made of fluororubber, and a plurality of rubber spacers being fixedly sleeved on the outer wall of the metal ring, the plurality of rubber spacers being fixedly connected to the inner wall of the sealing ring outer ring.

[0010] A pressure-resistant mechanism is provided inside the outer ring of the sealing ring, and there are multiple sets of the pressure-resistant mechanism, which are located between two adjacent rubber septa.

[0011] The anti-compression mechanism includes a rectangular block fixedly sleeved on the outer wall of the metal ring. The top and bottom of the rectangular block are respectively provided with adjustment components and limiting components. The two sets of adjustment components and limiting components are symmetrically distributed with respect to the transverse central axis of the rectangular block.

[0012] Furthermore, the adjustment assembly includes a mounting groove formed on the top of the rectangular block, a damping rod fixedly mounted on the inner wall of the mounting groove, and two adjustment blocks fixedly sleeved on the outer wall of the damping rod.

[0013] Furthermore, a spring is fitted on the outer side of the damping rod, and the spring is located between a pair of adjusting blocks.

[0014] Furthermore, connecting rods are hinged to the tops of the two adjusting blocks respectively, and a pair of semi-circular blocks are provided on the outer side of the rectangular block. The semi-circular blocks are located on the upper and lower sides of the rectangular block, and the inner wall of the semi-circular blocks is hinged.

[0015] Furthermore, the mounting groove has a convex design, and the two adjusting blocks have an I-shaped cross-section. Both adjusting blocks are adapted to the mounting groove and are slidably connected.

[0016] Furthermore, the limiting component includes a limiting protrusion fixedly installed on the inner wall of the bottom of the semi-circular block, and the limiting protrusion is designed in an inverted trapezoidal shape.

[0017] Furthermore, two fixing plates are fixedly installed on the top of the rectangular block, and a round rod is fixedly connected between the two fixing plates. A limiting groove is formed on the top outer wall of the round rod, and the limiting groove is adapted to the limiting protrusion.

[0018] 3. Beneficial effects

[0019] Compared with existing technologies, the advantages of this utility model are:

[0020] 1. The anti-pressure mechanism can effectively absorb local pressure and prevent the outer ring of the sealing ring from breaking. When the outer ring of the sealing ring is subjected to excessive pressure, the pressure is transmitted to the connecting rod through the semi-arc block, and then drives the adjusting block to move away from the damping rod axis, thereby dispersing the pressure. The damping rod and the spring work together to absorb the extrusion force, reduce the local stress of the outer ring of the sealing ring, and reduce the risk of breaking. In addition, the limiting convex block and the limiting groove design effectively prevent the excessive movement of the damping rod, ensure the elasticity of the spring, further enhance the stability and sealing effect of the system, thereby prolonging the service life of the sealing system and improving its reliability. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 It is a schematic diagram of the internal structure of the outer ring of the sealing ring of the utility model;

[0023] Figure 3 It is a schematic diagram of the internal local structure of the outer ring of the sealing ring of the utility model;

[0024] Figure 4 It is a schematic diagram of the Figure 3 enlarged structure of A of the utility model

[0025] Figure 5 It is a schematic diagram of the local section structure of the anti-pressure mechanism of the utility model

[0026] Figure 6 It is an exploded structure schematic diagram of the anti-pressure mechanism of the utility model.

[0027] Mark explanation in the figure:

[0028] 1, the outer ring of the sealing ring; 2, the metal ring; 21, the rubber spacer; 3, the rectangular block; 31, the installation groove; 32, the fixed plate; 33, the round rod; 331, the limiting groove; 4, the damping rod; 41, the adjusting block; 411, the connecting rod; 42, the spring; 5, the semi-arc block; 51, the limiting convex block. DETAILED DESCRIPTION

[0029] The technical scheme in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model; Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0030] In the description of the utility model, it is necessary to explain that the terms "upper", "lower", "inner", "outer", "top / bottom end" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0031] In the description of the utility model, it should be pointed out that, unless otherwise specified and limited, the terms "mounting", "provided with", "sleeved / connected", "connected" and the like should be broadly understood, for example, "connected" can be fixedly connected, can also be detachably connected, or integrally connected; can be mechanically connected, can also be electrically connected; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0032] Example 1:

[0033] Please refer to Figures 1-6 A high-pressure-resistant rubber O-ring, comprising a sealing ring outer ring 1, a metal ring 2 is arranged in the sealing ring outer ring 1, the sealing ring outer ring 1 is made of fluorine rubber, a plurality of rubber spacers 21 are fixedly sleeved on the outer wall of the metal ring 2, and the plurality of rubber spacers 21 are fixedly connected with the inner wall of the sealing ring outer ring 1;

[0034] The compression resistance mechanism is arranged in the sealing ring outer ring 1, and the compression resistance mechanism has multiple groups and is arranged between two adjacent rubber spacers 21;

[0035] The anti-compression mechanism includes a rectangular block 3 fixedly fitted onto the outer wall of the metal ring 2. Adjustment components and limiting components are respectively installed at the top and bottom of the rectangular block 3, and the two sets of adjustment and limiting components are symmetrically distributed with respect to the transverse central axis of the rectangular block 3. The adjustment component includes a mounting groove 31 opened at the top of the rectangular block 3. A damping rod 4 is fixedly installed on the inner wall of the mounting groove 31, and two adjustment blocks 41 are fixedly fitted onto the outer wall of the damping rod 4. A spring 42 is fitted onto the outer side of the damping rod 4, and the spring 42 is located between the pair of adjustment blocks 41. Connecting rods 411 are hinged to the tops of the two adjustment blocks 41, and the outer side of the rectangular block 3... A pair of semi-circular blocks 5 are provided, located on the upper and lower sides of the rectangular block 3, and the inner wall of the semi-circular blocks 5 is hinged to 411; the mounting groove 31 has a convex design, and the two adjusting blocks 41 have an I-shaped cross-section. Both adjusting blocks 41 are adapted to the mounting groove 31 and are slidably connected; the limiting component includes a limiting protrusion 51 fixedly installed on the bottom inner wall of the semi-circular block 5, and the limiting protrusion 51 has an inverted trapezoidal design; two fixing plates 32 are fixedly installed on the top of the rectangular block 3, and a round rod 33 is fixedly connected between the two fixing plates 32. A limiting groove 331 is opened on the top outer wall of the round rod 33, and the limiting groove 331 is adapted to the limiting protrusion 51.

[0036] Pressure is transmitted from the outer ring 1 of the sealing ring to the semi-circular block 5 and driven by the connecting rod 411 to move the adjusting block 41 along the axis. The design effectively disperses excessive local pressure on the outer ring 1 of the sealing ring. The damping rod 4 and spring 42 absorb the compressive force, thereby reducing the risk of the outer ring 1 of the sealing ring rupture. The linkage of the anti-compression mechanism avoids local damage or rupture of the outer ring 1 of the sealing ring due to excessive pressure, extending the service life of the sealing ring and enhancing the sealing reliability of the system. The combined action of the spring 42 and the damping rod 4 can effectively absorb and disperse excessive local pressure, preventing pressure concentration at a certain point, reducing damage to the sealing ring, and improving the stability of the overall system. The limiting protrusion 51 and the limiting groove 331 ensure that the damping rod 4 and spring 42 will not lose their elasticity due to excessive movement, ensuring that the spring 42 maintains its elasticity for a long time. The limiting design between the limiting protrusion 51 on the semi-circular block 5 and the rectangular block 3 allows the structure to automatically limit under excessive pressure, preventing excessive movement of the adjusting block 41 and the damping rod 4, thereby avoiding possible damage or failure of other components.

[0037] Working principle: When the outer ring 1 of the sealing ring is subjected to excessive pressure locally, the pressure is first transmitted to the corresponding semi-arc block 5 through the outer ring 1 of the sealing ring. Through the hinge of the semi-arc block 5 and the two connecting rods 411, the two connecting rods 411 are driven to drive the two adjusting blocks 41 to move away from each other along the axis of the damping rod 4. The damping rod 4 and the spring 42 absorb the compressive force, relieve the local pressure on the outer ring 1 of the sealing ring, and prevent the outer ring 1 of the sealing ring from breaking.

[0038] In order to prevent the excessive movement of the two damping rods 4, so that the spring 42 loses elasticity, by fixing a limiting block 51 on the inner wall of the half-arc block 5, when the half-arc block 5 approaches the rectangular block 3, the limiting block 51 is simultaneously slowly clamped in the limiting groove 331, when the limiting block 51 is attached to the limiting groove 331, the half-arc block 5 cannot continue to move, thereby limiting the two adjusting blocks 41, and the service life of the sealing ring can be prolonged.

[0039] The above is only the preferred specific implementation of the present application; however, the protection scope of the present application is not limited to this. Any skilled person in the art, according to the technical scheme and the improvement concept of the present application, within the technical range disclosed by the present application, should be covered in the protection scope of the present application.

Claims

1. A high pressure resistant rubber O-ring comprising a sealing ring outer ring (1), characterized in that: The inside of the sealing ring outer ring (1) is provided with a metal ring (2), the sealing ring outer ring (1) is made of fluorine rubber, a plurality of rubber spacers (21) are fixedly sleeved on the outer wall of the metal ring (2), and the plurality of rubber spacers (21) are fixedly connected with the inner wall of the sealing ring outer ring (1); The compression resistance mechanism is arranged in the inside of the sealing ring outer ring (1), and the compression resistance mechanism has multiple groups and is arranged between two adjacent rubber spacers (21); The compression resistance mechanism comprises a rectangular block (3) fixedly sleeved on the outer wall of the metal ring (2), the top and bottom of the rectangular block (3) are respectively provided with an adjusting assembly and a limiting assembly, and the two adjusting assemblies and limiting assemblies are symmetrically distributed with the transverse center axis of the rectangular block (3).

2. A high pressure resistant rubber O-ring as claimed in claim 1, wherein: The adjusting assembly comprises a mounting groove (31) formed in the top of the rectangular block (3), a damping rod (4) is fixedly installed on the inner wall of the mounting groove (31), and two adjusting blocks (41) are fixedly sleeved on the outer wall of the damping rod (4).

3. A high pressure resistant rubber O-ring as claimed in claim 2, wherein: The outer side of the damping rod (4) is sleeved with a spring (42), and the spring (42) is located between the pair of adjusting blocks (41).

4. A high pressure resistant rubber O-ring as claimed in claim 2, wherein: The top of the two adjusting blocks (41) is respectively hingedly installed with a connecting rod (411), one pair of half-arc blocks (5) are arranged on the outer side of the rectangular block (3), the half-arc blocks (5) are located on the upper and lower sides of the rectangular block (3), and the inner wall of the half-arc block (5) is hingedly connected with (411).

5. A high pressure resistant rubber O-ring as claimed in claim 4, wherein: The mounting groove (31) is designed in a convex shape, the two adjusting blocks (41) are designed in a H-shaped cross section, and the two adjusting blocks (41) are adapted to the mounting groove (31) and are in sliding connection.

6. A high pressure resistant rubber O-ring as claimed in claim 4, wherein: The limiting assembly comprises a limiting protrusion (51) fixedly installed on the inner wall of the bottom of the half-arc block (5), and the limiting protrusion (51) is designed in an inverted trapezoidal shape.

7. A high pressure resistant rubber O-ring as claimed in claim 1, wherein: The top of the rectangular block (3) is fixedly installed with two fixed plates (32), the two fixed plates (32) are fixedly connected with a circular rod (33), a limiting groove (331) is formed in the top outer wall of the circular rod (33), and the limiting groove (331) is adapted to the limiting protrusion (51).

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