Antistatic ethylene propylene diene monomer sealing ring

Abstract

The utility model discloses an antistatic ethylene-propylene-diene monomer sealing ring, which relates to the technical field of ethylene-propylene-diene monomer sealing rings and comprises a sealing ring main body, grooves are formed in the inner circular surface and the outer circular surface of the sealing ring main body, an inner steel ring is fixedly mounted in the groove in the inner circular surface of the sealing ring main body, and an outer steel ring is fixedly mounted in the groove in the outer circular surface of the sealing ring main body. An outer steel ring is fixedly installed in the groove in the outer circle face of the sealing ring body, and the inner diameter of the inner steel ring is the same as the inner diameter of the sealing ring body. Compared with an existing common ethylene-propylene-diene monomer sealing ring, the antistatic ethylene-propylene-diene monomer sealing ring has the advantages that the sealing surfaces are attached more tightly, the attaching range is larger, and the situation that the whole sealing ring main body is completely distorted and deformed when being pressed, so that a gap is formed in the sleeving part of the sealing ring main body and a workpiece, and the sealing ring cannot be completely attached and sealed is avoided; the sealing performance of the sealing ring body is greatly improved, the inner steel ring and the outer steel ring can guide static electricity on the surface of the sealing ring body to be released, and the antistatic capacity of the sealing ring body is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to three -way ethylene -propylene rubber sealing ring technical field, concretely is a kind of antistatic three -way ethylene -propylene rubber sealing ring. BACKGROUND

[0002] Three -way ethylene -propylene rubber sealing ring is a kind of sealing ring main body made of three -way ethylene -propylene rubber, and the sealing ring main body is mainly used to prevent liquid or gas leakage and the sealing protection of workpiece butt joint part.

[0003] The existing three -way ethylene -propylene rubber sealing ring, after production, is only a single annular rubber sealing ring main body, and the entire sealing ring main body has elastic force, and the sealing ring main body is directly sleeved in the joint of workpiece, and the workpiece butt joint generates opposite extrusion force, and the extrusion force can cause the entire sealing ring main body to be pressed and expanded, and if the upper and lower surfaces of the sealing ring main body are uniformly stressed, the sealing ring main body can be uniformly expanded and still maintain a circular shape, but in actual use, due to the shape of the workpiece or manual installation force and various factors of the workpiece itself, the pressure received by each point on the surface of the sealing ring main body is different, so that the pressure received by different positions of the sealing ring main body is different, thereby different elastic deformation occurs, so that the sealing ring main body is no longer a circular shape, that is, the inner circular surface position of the sealing ring main body can be sleeved with the joint position of the workpiece, thereby affecting the sealing, and excessive extrusion can also cause the sealing ring main body to be excessively deformed and expanded, thereby affecting the normal use of the sealing ring main body.

[0004] Therefore, in view of the above, the existing structure is improved, and an antistatic three -way ethylene -propylene rubber sealing ring is provided. CONTENT OF THE UTILITY MODEL

[0005] The utility model aims at providing an antistatic three -way ethylene -propylene rubber sealing ring to solve the problems in the background art.

[0006] To achieve the above object, the utility model provides the following technical scheme: an antistatic three -way ethylene -propylene rubber sealing ring, which comprises a sealing ring main body, the inner circular surface and the outer circular surface of the sealing ring main body are provided with grooves, the inner groove of the inner circular surface of the sealing ring main body is fixedly installed with an inner steel ring, the outer groove of the outer circular surface of the sealing ring main body is fixedly installed with an outer steel ring, the inner diameter of the inner steel ring is the same as the inner diameter of the sealing ring main body, the overall diameter of the outer steel ring is the same as the outer diameter of the sealing ring main body, and the height of the inner steel ring and the outer steel ring is less than the height of the sealing ring main body.

[0007] Preferably, the inner steel ring and the outer steel ring are made of stainless steel material, and the surfaces of the inner steel ring and the outer steel ring are coated with anticorrosive paint.

[0008] Preferably, the inner wall of the sealing ring body is filled with conductive carbon black particles, and the conductive carbon black particles are uniformly distributed in a dot matrix.

[0009] Preferably, the upper surface and the lower surface of the sealing ring body are provided with annular grooves, and two annular grooves are arranged on the upper surface and the lower surface of the sealing ring body.

[0010] Compared with the prior art, the utility model has the beneficial effects that:

[0011] 1. The inner steel ring and the outer steel ring are arranged, the sealing surface is more closely attached, the attachment range is larger, the sealing ring body is not deformed, the gap between the sealing ring body and the workpiece sleeve joint part cannot be completely attached and sealed, the sealing performance of the sealing ring body is greatly improved, and the inner steel ring and the outer steel ring can also guide the static electricity on the surface of the sealing ring body to be released, and the anti-static ability of the sealing ring body is improved.

[0012] 2. The utility model discloses a ring groove and conductive carbon black particles are arranged, the conductive carbon black particle filling is used, the whole sealing ring body can release static electricity quickly, thereby further improving the anti-static performance of the whole sealing ring body, when the upper surface and the lower surface of the sealing ring body are pressed, the gap of the annular groove can provide more extension space for the sealing ring body, and three layers of transverse extension are formed on the upper surface and the lower surface with the annular groove as the interval, and the sealing property of the sealing ring body after being attached and extruded with the workpiece can be further improved. BRIEF DESCRIPTION OF DRAWINGS

[0013] Fig. 1 It is a whole three-dimensional structure schematic view of the utility model;

[0014] Fig. 2 It is a split structure schematic view of the sealing ring body, the inner steel ring and the outer steel ring of the utility model;

[0015] Fig. 3 It is a whole cross-sectional structure schematic view of the utility model.

[0016] In the drawing: 1, sealing ring body; 2, groove; 3, inner steel ring; 4, outer steel ring; 5, annular groove; 6, conductive carbon black particle. DETAILED DESCRIPTION

[0017] 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 protection scope of the utility model.

[0018] For example, Figs. 1-3As shown, an antistatic EPDM rubber sealing ring includes a sealing ring body 1. Grooves 2 are formed on both the inner and outer circular surfaces of the sealing ring body 1. An inner steel ring 3 is fixedly installed inside the groove 2 on the inner circular surface of the sealing ring body 1, and an outer steel ring 4 is fixedly installed inside the groove 2 on the outer circular surface of the sealing ring body 1. The inner diameter of the inner steel ring 3 is the same as the inner diameter of the sealing ring body 1, and the overall diameter of the outer steel ring 4 is the same as the outer diameter of the sealing ring body 1. The heights of both the inner steel ring 3 and the outer steel ring 4 are less than the height of the sealing ring body 1.

[0019] By adopting the above technical solution, the inner steel ring 3 and the outer steel ring 4 can provide support for the middle part of the entire sealing ring body 1, and the overall annular shape will not change when the sealing ring body 1 is squeezed.

[0020] The inner steel ring 3 and the outer steel ring 4 are located in the middle of the sealing ring body 1, allowing the upper and lower surfaces of the sealing ring body 1 to expand left and right. However, the middle part is restricted by the inner steel ring 3 and the outer steel ring 4 and cannot expand left and right. This allows the sealing ring body 1 to form an "I" shape after being compressed, thereby improving the contact surface between the upper and lower surfaces and the workpiece, as well as the tightness of the expansion position on the upper and lower sides of the inner circular surface of the sealing ring body 1 with the workpiece, and ensuring the stability of the middle shape support.

[0021] The inner steel ring 3 and the outer steel ring 4 can also guide the release of static electricity on the surface of the sealing ring body 1.

[0022] Furthermore, both the inner steel ring 3 and the outer steel ring 4 are made of stainless steel, and both surfaces of the inner steel ring 3 and the outer steel ring 4 are coated with anti-corrosion paint.

[0023] By adopting the above technical solution, the inner steel ring 3 and the outer steel ring 4 can be protected against corrosion and rust, thus extending their service life.

[0024] Furthermore, the inner wall of the sealing ring body 1 is filled with conductive carbon black particles 6, and the conductive carbon black particles 6 are evenly distributed in a dot matrix pattern.

[0025] By adopting the above technical solution, the conductive carbon black particles 6 filler enables the entire sealing ring body 1 to quickly release static electricity, thereby further improving the antistatic performance of the entire sealing ring body 1.

[0026] Furthermore, annular grooves 5 are provided on both the upper and lower surfaces of the sealing ring body 1, and two annular grooves 5 are provided on both the upper and lower surfaces of the sealing ring body 1.

[0027] By adopting the above technical solution, the gap of the annular groove 5 can provide more extension space for the sealing ring body 1, and three layers of transverse extension are formed on the upper and lower surfaces with the annular groove 5 as the interval, which can further improve the sealing performance of the sealing ring body 1 after it is pressed and squeezed against the workpiece.

[0028] Working Principle: When using this antistatic EPDM rubber sealing ring, firstly, the sealing ring body 1 is fitted onto the workpiece connection point, and then the workpiece is joined. The workpiece will compress the sealing ring body 1. The inner steel ring 3 and outer steel ring 4 provide support for the middle part of the entire sealing ring body 1. When the sealing ring body 1 is compressed, the overall annular shape does not change. At the same time, the inner steel ring 3 and outer steel ring 4 are in the middle of the sealing ring body 1, allowing the upper and lower surfaces of the sealing ring body 1 to expand laterally. However, the middle part is restricted from expanding laterally by the inner steel ring 3 and outer steel ring 4. This allows the sealing ring body 1 to form an "I" shape after being compressed, thereby improving the contact surface between the upper and lower surfaces and the workpiece, as well as the tightness of the expansion positions on the upper and lower sides of the inner circular surface of the sealing ring body 1 with the workpiece, and ensuring the stability of the middle shape support, thus ensuring the sealing surface... The seal provides a tighter fit and a wider fit range, preventing the sealing ring body 1 from twisting or deforming, thus avoiding gaps between the sealing ring body 1 and the workpiece and preventing complete sealing. While the sealing ring body 1 extends laterally under pressure on both upper and lower surfaces, the gap in the annular groove 5 provides more space for extension. Furthermore, three layers of lateral extension are formed on the upper and lower surfaces with the annular groove 5 as the interval, ensuring a tighter seal at the workpiece joint. During use, the inner steel ring 3 and outer steel ring 4 guide the release of static electricity from the surface of the sealing ring body 1. The conductive carbon black particles 6 filler allows the entire sealing ring body 1 to quickly release static electricity, enhancing its antistatic capability. This is the working principle of this antistatic EPDM rubber sealing ring.

Claims

1. An antistatic EPDM rubber sealing ring, comprising a sealing ring body (1), characterized in that, The sealing ring body (1) has grooves (2) on both its inner and outer circular surfaces. An inner steel ring (3) is fixedly installed inside the groove (2) on the inner circular surface of the sealing ring body (1). An outer steel ring (4) is fixedly installed inside the groove (2) on the outer circular surface of the sealing ring body (1). The inner diameter of the inner steel ring (3) is the same as the inner diameter of the sealing ring body (1). The overall diameter of the outer steel ring (4) is the same as the outer diameter of the sealing ring body (1). The heights of the inner steel ring (3) and the outer steel ring (4) are both less than the height of the sealing ring body (1).

2. The antistatic EPDM rubber sealing ring according to claim 1, characterized in that, Both the inner steel ring (3) and the outer steel ring (4) are made of stainless steel, and both the inner steel ring (3) and the outer steel ring (4) are coated with anti-corrosion paint.

3. The antistatic EPDM rubber sealing ring according to claim 1, characterized in that, The inner wall of the sealing ring body (1) is filled with conductive carbon black particles (6), and the conductive carbon black particles (6) are evenly distributed in a dot matrix pattern.

4. The antistatic EPDM rubber sealing ring according to claim 1, characterized in that, The sealing ring body (1) has annular grooves (5) on both its upper and lower surfaces, and there are two annular grooves (5) on both the upper and lower surfaces of the sealing ring body (1).

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