Nitrile rubber sealing ring assembly

Abstract

The utility model discloses a nitrile rubber seal ring assembly, which relates to the technical field of seal rings, and comprises a first seal ring, a second seal ring and a steel ring, the edge of the side surface of the second seal ring is provided with a clamping groove, the rear side surface of the second seal ring is connected with a clamping ring, and the clamping ring is clamped and connected in the clamping groove. A guide inclined plane is formed in the position, corresponding to the clamping groove, of the side face of the second sealing ring, the guide inclined plane is extruded through the guide cambered surface, and therefore the clamping ring is installed in the clamping groove in a clamped mode, the second sealing ring and the steel ring are assembled, and after the second sealing ring is damaged in long-term use, the edge of the second sealing ring is pulled, so that the sealing effect is improved. According to the structure, the second sealing ring and the steel ring are connected and assembled in a clamped mode, mounting and dismounting are convenient, after the second sealing ring is abraded, the steel ring can still continue to be used, and only the second sealing ring needs to be replaced.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing rings, in particular to a nitrile rubber sealing ring component. Background Art

[0002] In the production equipment of industrial machinery, most mechanical parts need to use sealing rings to prevent the lubricant in the lubrication system from leaking and causing pollution to the external environment. At present, most sealing rings are pressed by mold technology;

[0003] After searching, a nitrile rubber sealing ring assembly (publication number: CN209054074U) is now disclosed. In this patent, a steel ring is fixedly connected to one side of the socket relative to the second sealing ring. After the second sealing ring is worn out due to use, the removal of the steel ring is rather cumbersome, and the second sealing ring and the steel ring need to be replaced as a whole, thereby increasing the replacement cost. For this reason, we propose a nitrile rubber sealing ring assembly. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a nitrile rubber sealing ring assembly, which solves the problems raised by the above-mentioned background technology.

[0005] The utility model solves the technical problem by adopting the following technical solution: a nitrile rubber sealing ring assembly comprises a first sealing ring, a second sealing ring and a steel ring, a side edge of the second sealing ring is provided with a clamping groove, a rear side surface of the second sealing ring is connected with a clamping ring, and the clamping ring is clamped and connected inside the clamping groove.

[0006] As a further technical solution of the utility model, a guiding inclined surface is provided on the side surface of the second sealing ring corresponding to the position of the clamping groove, and a guiding arc surface is provided on the free end surface of the clamping ring.

[0007] As a further technical solution of the utility model, the inner side of the first sealing ring is connected to two groups of first isolation convex rings and two groups of elastic gaskets, the inner ring edge of the first sealing ring is connected to a clamping part, and the outer surface of the first sealing ring is connected to a wear-resistant layer.

[0008] As a further technical solution of the utility model, the outer surface of the clamping portion is provided with a pressure inclined surface, and the edge side surface of the steel ring is provided with an extrusion inclined surface.

[0009] As a further technical solution of the utility model, the side of the second sealing ring is connected with an inner ring and two groups of second isolation convex rings, and plug-in grooves are provided between the two groups of second isolation convex rings and between the inner ring and one group of second isolation convex rings.

[0010] As a further technical solution of the utility model, the outer dimensions of the two groups of the first isolating protruding rings are respectively matched with the inner dimensions of the two groups of the plug-in slots.

[0011] The beneficial effects of the utility model are:

[0012] The utility model discloses a nitrile rubber sealing ring component, which is pressed against a guiding inclined surface by a guiding arc surface, so that a clamping ring is clamped and installed inside a clamping groove, so that a second sealing ring and a steel ring are assembled, and when the second sealing ring is damaged in long-term use, the edge of the second sealing ring is bent, so that the edge of the free end of the clamping ring is exposed, so that the steel ring and the clamping ring can be removed. The structure clamps and connects the second sealing ring and the steel ring, and is easy to install and disassemble. After the second sealing ring is worn, the steel ring can still be used, and only the second sealing ring needs to be replaced. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0014] Figure 1 It is a structural schematic diagram of the utility model;

[0015] Figure 2 It is a top view of the utility model;

[0016] Figure 3 yes Figure 2 Sectional view of AA in the middle;

[0017] Figure 4 It is a structural schematic diagram of the second sealing ring and the steel ring in the utility model. DETAILED DESCRIPTION

[0018] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0019] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0020] Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, a nitrile rubber sealing ring assembly includes a first sealing ring 1, a second sealing ring 2 and a steel ring 3. The side edge of the second sealing ring 2 is provided with a card slot 4. The rear side of the second sealing ring 2 is connected to a snap ring 5. The snap ring 5 is snap-connected to the inside of the card slot 4. The side of the second sealing ring 2 and the position corresponding to the card slot 4 are provided with a guide inclined surface 6. The free end surface of the snap ring 5 is provided with a guide arc surface 7. The inner side of the first sealing ring 1 is connected to two groups of first isolation convex rings 8 and two groups of elastic gaskets 9. The inner side of the first sealing ring 1 A clamping portion 10 is connected to the edge of the annular surface, a wear-resistant layer 11 is connected to the outer surface of the first sealing ring 1, a pressure inclined surface 12 is provided on the outer surface of the clamping portion 10, an extrusion inclined surface 13 is provided on the edge side of the steel ring 3, an inner ring 14 and two groups of second isolation convex rings 15 are connected to the side of the second sealing ring 2, and plug-in grooves 16 are provided between the two groups of second isolation convex rings 15 and between the inner ring 14 and one group of second isolation convex rings 15, and the outer dimensions of the two groups of first isolation convex rings 8 are respectively adapted to the inner dimensions of the two groups of plug-in grooves 16.

[0021] It should be noted that the wear-resistant layer 11 is formed by coating the first sealing ring 1 with a wear-resistant material, aluminum oxide; and the cross-sections of the two sets of elastic washers 9 are semicircular structures.

[0022] Working principle: the guiding arc surface 7 is used to squeeze the guiding inclined surface 6, so that the clamping ring 5 is clamped and installed inside the clamping groove 4, so that the second sealing ring 2 and the steel ring 3 are assembled;

[0023] The second sealing ring 2 is moved and extruded toward the first sealing ring 1, and the extrusion slope 13 extrudes the clamping portion 10, so that the clamping portion 10 and the edge of the steel ring 3 are limited, and the two groups of first isolation convex rings 8 are respectively extruded into the inside of the two groups of plug-in grooves 16, and one side of the steel ring 3 is tightly abutted against the two groups of elastic washers 9;

[0024] When the first sealing ring 1 is damaged during long-term use, the edge of the first sealing ring 1 is then bent to separate the clamping portion 10 from the edge of the steel ring 3, thereby separating the first sealing ring 1 from the second sealing ring 2 and the steel ring 3;

[0025] When the second sealing ring 2 is damaged during long-term use, the edge of the second sealing ring 2 is bent so that the free end edge of the snap ring 5 is exposed, so that the steel ring 3 and the snap ring 5 can be removed.

[0026] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A nitrile rubber sealing ring assembly, characterized in that: The invention comprises a first sealing ring (1), a second sealing ring (2) and a steel ring (3); a clamping groove (4) is provided on the side edge of the second sealing ring (2); a clamping ring (5) is connected to the rear side of the second sealing ring (2); and the clamping ring (5) is clamped and connected inside the clamping groove (4).

2. The nitrile rubber sealing ring assembly according to claim 1, characterized in that: A guide inclined surface (6) is provided on the side surface of the second sealing ring (2) at a position corresponding to the clamping groove (4), and a guide arc surface (7) is provided on the free end surface of the clamping ring (5).

3. The nitrile rubber sealing ring assembly according to claim 1, characterized in that: The inner side surface of the first sealing ring (1) is connected to two groups of first isolating convex rings (8) and two groups of elastic gaskets (9), the inner ring surface edge of the first sealing ring (1) is connected to a clamping portion (10), and the outer surface of the first sealing ring (1) is connected to a wear-resistant layer (11).

4. A nitrile rubber sealing ring assembly according to claim 3, characterized in that: The outer surface of the clamping portion (10) is provided with a pressure inclined surface (12), and the edge side surface of the steel ring (3) is provided with an extrusion inclined surface (13).

5. The nitrile rubber sealing ring assembly according to claim 3, characterized in that: The side surface of the second sealing ring (2) is connected to an inner ring (14) and two groups of second isolating convex rings (15), and plug-in grooves (16) are provided between the two groups of second isolating convex rings (15) and between the inner ring (14) and one group of second isolating convex rings (15).

6. A nitrile rubber sealing ring assembly according to claim 5, characterized in that: The external dimensions of the two groups of the first isolating protruding rings (8) are respectively matched to the internal dimensions of the two groups of the inserting grooves (16).

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