Metal convex rib and rubber film composite sealing shell gasket

Abstract

The utility model provides a metal convex rib and rubber film composite sealing shell gasket, and belongs to the technical field of gaskets. Comprising a shell gasket circular ring body, the shell gasket circular ring body comprises a middle metal circular ring base plate, a plurality of circular holes are evenly distributed in the circumference of the middle metal circular ring base plate, an annular arc upper protruding rib is arranged on the edge of the inner side of the middle metal circular ring base plate, and an annular upper protruding rib edge is arranged on the edge of the outer side of the middle metal circular ring base plate; and surface sealing is changed into linear sealing, so that the sealing stress of a sealing line is greatly improved, and the sealing performance is improved. An upper rubber film matched with the middle metal ring substrate in shape is adhered to the upper surface of the middle metal ring substrate, and a lower rubber film matched with the middle metal ring substrate in shape is adhered to the lower surface of the middle metal ring substrate; according to the structure, the middle metal circular ring substrate can be protected, the metal gasket can be effectively prevented from being deformed when being extruded, and the corrosion resistance is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of gaskets, and in particular relates to a metal rib rubber film composite sealing shell gasket. Background Art

[0002] Metal gaskets are a type of sealing spare part that has been used in batches for more than a decade in high-speed rail gearboxes, engines, retarders, high-end gearboxes, axles, compressors, diesel engines, internal combustion engines, and other fields. Sealing gaskets are made of metal or non-metallic plate materials through cutting, stamping or shearing processes, and are used for sealing connections between parts of machinery and equipment. A type of housing sealing gasket currently in use has an overall planar structure and is a face seal when in use. This structure reduces the sealing stress of the sealing line, and the gasket is made of metal material as a whole, which has relatively poor deformation resistance and corrosion resistance. Therefore, it is necessary to propose improvements. Utility Model Content

[0003] The technical problem solved by the utility model is: to provide a metal rib rubber film composite sealing shell gasket. The utility model aims to improve the gasket's anti-deformation performance, corrosion resistance, sealing stress and sealing performance by improving the shell gasket.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A metal rib rubber film composite sealing shell gasket comprises a shell gasket ring body, the shell gasket ring body comprises an intermediate metal ring substrate, a plurality of circular holes are evenly distributed on the circumference of the intermediate metal ring substrate, an inner edge of the intermediate metal ring substrate is provided with an annular arc upper rib, and an outer edge of the intermediate metal ring substrate is provided with an annular upper rib edge; an upper rubber film matching its shape is pasted on the upper surface of the intermediate metal ring substrate, and a lower rubber film matching its shape is pasted on the lower surface of the intermediate metal ring substrate.

[0006] As a further limitation of the above solution, the intermediate metal ring substrate is made of cold-rolled carbon steel plate / strip or stainless steel plate.

[0007] As a further limitation of the above solution, the upper rubber membrane and the lower rubber membrane are made of nitrile rubber or fluororubber.

[0008] As a further limitation of the above solution, the thickness of the intermediate metal ring substrate is 0.15-0.30 mm, and the thickness of the upper rubber membrane and the lower rubber membrane is 0.025-0.065 mm.

[0009] As a further limitation of the above solution, the upper rubber membrane and the lower rubber membrane are connected together by an adhesive layer made of a coupled composite material.

[0010] As a further limitation of the above scheme, the working temperature of the metal rib rubber film composite sealing housing gasket is -40°C to 140°C / -40°C to 300°C.

[0011] The advantages of this utility model compared with the prior art:

[0012] 1. This scheme improves the structure of the shell gasket, and provides an upper rubber film and a lower rubber film on the upper surface and the lower surface of the intermediate metal ring substrate respectively, forming a new type of environmentally friendly high-performance composite sealing material, which is a sulfide organically composited by the two surfaces of the metal plate and rubber. This structure can protect the intermediate metal ring substrate, effectively prevent the metal gasket from being deformed when squeezed, and improve the corrosion resistance;

[0013] 2. In this scheme, a circular arc upper convex rib is provided on the inner edge of the middle metal ring substrate, and a circular arc upper convex rib is provided on the outer edge of the middle metal ring substrate, so that the seal is changed from a surface seal to a line seal. When tightened under certain conditions, the sealing stress of the sealing line is greatly increased, thereby improving the sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0015] Figure 2 For this utility model Figure 1 AA section view in. DETAILED DESCRIPTION

[0016] 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.

[0017] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "includes a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0018] See also Figure 1-2 , describe the embodiments of the present utility model in detail.

[0019] Embodiment: A metal rib rubber film composite sealing housing gasket, see Figure 1-2 As shown, it includes a shell gasket ring body 1, and the shell gasket ring body 1 includes an intermediate metal ring substrate 2, and a plurality of circular holes 3 are evenly distributed on the circumference of the intermediate metal ring substrate 2, and an inner edge of the intermediate metal ring substrate 2 is provided with an annular arc upper rib 4, and an outer edge of the intermediate metal ring substrate 2 is provided with an annular upper rib edge 5; an upper rubber film 6 adapted to its shape is pasted on the upper surface of the intermediate metal ring substrate 2, and a lower rubber film 7 adapted to its shape is pasted on the lower surface of the intermediate metal ring substrate 2.

[0020] In this embodiment, an upper rubber film and a lower rubber film are respectively provided on the upper surface and the lower surface of the intermediate metal ring substrate, forming a new type of environmentally friendly high-performance composite sealing material, which is a sulfide organically composited with both sides of the metal plate and rubber. This structure can protect the intermediate metal ring substrate, effectively prevent the metal gasket from deforming when being squeezed, and improve the corrosion resistance.

[0021] In this embodiment, a circular arc upper convex rib is provided on the inner edge of the middle metal ring substrate, and a circular arc upper convex rib is provided on the outer edge of the middle metal ring substrate, so that the seal is changed from a surface seal to a line seal. When tightened under certain conditions, the sealing stress of the sealing line is greatly increased, thereby improving the sealing performance.

[0022] In a specific embodiment, the intermediate metal ring substrate 2 is made of cold-rolled carbon steel plate / strip or stainless steel plate.

[0023] In a specific implementation, the upper rubber membrane 6 and the lower rubber membrane 7 are made of nitrile rubber or fluororubber.

[0024] Preferably, the thickness of the intermediate metal ring substrate 2 is 0.15 to 0.30 mm, and the thickness of the upper rubber membrane 6 and the lower rubber membrane 7 is 0.025 to 0.065 mm.

[0025] In a specific embodiment, the upper rubber membrane 6 and the lower rubber membrane 7 are connected together by an adhesive layer made of a coupled composite material.

[0026] In a specific embodiment, the working temperature of the metal rib rubber film composite sealing housing gasket is -40°C to 140°C / -40°C to 300°C.

[0027] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0028] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A metal rib rubber film composite sealing housing gasket, characterized in that: The invention comprises a shell gasket annular body (1), wherein the shell gasket annular body (1) comprises an intermediate metal annular substrate (2), a plurality of circular holes (3) are evenly distributed on the circumference of the intermediate metal annular substrate (2), an inner edge of the intermediate metal annular substrate (2) is provided with an annular arc upper convex rib (4), and an outer edge of the intermediate metal annular substrate (2) is provided with an annular upper convex rib edge (5); an upper rubber film (6) adapted to its shape is adhered to the upper surface of the intermediate metal annular substrate (2), and a lower rubber film (7) adapted to its shape is adhered to the lower surface of the intermediate metal annular substrate (2).

2. The metal rib rubber film composite sealing housing gasket according to claim 1, characterized in that: The intermediate metal ring substrate (2) is made of a cold-rolled carbon steel plate / strip or a stainless steel plate.

3. The metal rib rubber film composite sealing housing gasket according to claim 1, characterized in that: The upper rubber membrane (6) and the lower rubber membrane (7) are made of nitrile rubber or fluororubber.

4. The metal rib rubber film composite sealing housing gasket according to claim 1, characterized in that: The thickness of the intermediate metal ring substrate (2) is 0.15 to 0.30 mm, and the thickness of the upper rubber film (6) and the lower rubber film (7) is 0.025 to 0.065 mm.

5. The metal rib rubber film composite sealing housing gasket according to claim 1, characterized in that: The upper rubber membrane (6) and the lower rubber membrane (7) are connected together by an adhesive layer made of a coupled composite material.

6. The metal rib rubber film composite sealing housing gasket according to claim 1, characterized in that: The working temperature of the metal rib rubber film composite sealing housing gasket is -40°C to 140°C / -40°C to 300°C.

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