Special-shaped bolt and nut assembly with sealing gasket

Abstract

The special-shaped bolt and nut assembly comprises a bolt body and a nut, the nut is in threaded connection with the bolt body, an inserting groove is formed in the upper end of the nut, the lower sealing gasket is inserted into the upper end of the inserting groove, a limiting ring is fixedly connected to the middle of the upper end of the nut, and the limiting ring is in threaded connection with the bolt body. The upper end of the bolt body is fixedly connected with the bolt head, the lower end of the bolt head is fixedly connected with the mounting ring, the sealing gasket is inserted into the lower end of the mounting ring, and the upper sealing gasket and the lower sealing gasket are accurately matched with limiting grooves, fixing rings and other parts of the bolt and the nut respectively, so that the sealing gaskets can be attached to the side wall of equipment when an assembly is tightened, and the reliable sealing effect is achieved. The upper sealing gasket is firmly connected to the bolt body through insertion of the limiting groove and the fixing ring, the lower sealing gasket is fixed to the nut through matching of the insertion ring and the insertion groove, and after the nut is screwed, the two sealing gaskets are tightly attached to the surface of equipment needing to be sealed.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of bolt and nut assemblies, in particular to a special-shaped bolt and nut assembly with sealing gaskets. BACKGROUND

[0002] Bolt and nut assemblies are one of the most commonly used fastening connectors in the industrial field, and are widely used in mechanical manufacturing, construction engineering, automobile industry and aerospace industry. With the continuous development of industrial technology, traditional bolts and nuts have been unable to fully meet the needs of some special working conditions. For example, in the scene requiring complex connection, special shape cooperation or having sealing function, special-shaped bolt and nut assemblies are widely used due to their structural diversity and functional expansibility.

[0003] In fastening connections requiring sealing performance, such as hydraulic equipment, pneumatic systems, pressure vessels and pipeline interfaces, the sealing effect is crucial to the safety and stability of the system. In order to ensure the air tightness or liquid tightness of these devices, sealing gaskets are usually used in cooperation with special-shaped bolt and nut assemblies. At present, the sealing gasket mainly fills the small gap between the contact surfaces through elastic deformation, thereby realizing sealing. However, this sealing method may be damaged or insufficiently elastic to seal under the influence of pressure and the outside world for a long time, resulting in a gap between the sealing gasket and the bolt and nut assembly, thereby causing the sealing effect to decrease. Therefore, a special-shaped bolt and nut assembly with sealing gaskets is designed to solve the above problems. CONTENT OF THE UTILITY MODEL

[0004] In order to solve the problem, the application provides a special-shaped bolt and nut assembly with sealing gaskets.

[0005] The special-shaped bolt and nut assembly with sealing gaskets provided by the application adopts the following technical scheme:

[0006] A special-shaped bolt and nut assembly with sealing gaskets comprises a bolt body and a nut, the nut is threadedly connected with the bolt body, a slot is formed in the upper end of the nut, a lower sealing gasket is inserted into the upper end of the slot, a limiting ring is fixedly connected to the middle of the upper end of the nut, the limiting ring is threadedly connected with the bolt body, a bolt head is fixedly connected to the upper end of the bolt body, a mounting ring is fixedly connected to the lower end of the bolt head, and an upper sealing gasket is inserted into the mounting ring.

[0007] Preferably, an installation groove is formed in the upper end of the upper sealing gasket, and the installation groove is inserted into the mounting ring.

[0008] Preferably, a fixed ring is fixedly connected to the side of the bolt body close to the bolt head, and the fixed ring is inserted into the upper sealing gasket.

[0009] Preferably, the upper sealing gasket is internally provided with a limiting groove, and the limiting groove is matched with the fixing ring.

[0010] Preferably, the upper sealing gasket is internally provided with a limiting groove, and the limiting groove is matched with the fixing ring.

[0011] Preferably, the lower sealing gasket is internally provided with a limiting groove, and the limiting groove is matched with the fixing ring.

[0012] In summary, the present application has the following beneficial technical effects:

[0013] In the utility model, the upper and lower sealing gaskets are matched with the limiting groove, the fixing ring and other components of the bolt and the nut, so that the sealing gaskets can be attached to the side wall of the equipment when the assembly is tightened, thereby forming a reliable sealing effect; the upper sealing gasket is firmly connected to the bolt body through the insertion of the limiting groove and the fixing ring; the lower sealing gasket is fixed to the nut through the insertion of the insertion ring and the insertion groove; and after the nut is screwed, the two sealing gaskets are tightly attached to the surface of the equipment to be sealed. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is the first perspective three-dimensional structure schematic view of the embodiment of the application;

[0015] Figure 2 is the sectional structure schematic view of the main body of the embodiment of the application;

[0016] Figure 3 is the structure schematic view of the upper sealing gasket and the bolt body of the embodiment of the application;

[0017] Figure 4 is the sectional structure schematic view of the lower sealing gasket of the embodiment of the application.

[0018] Mark 1, bolt body; 11, bolt head; 12, mounting ring; 13, fixing ring; 2, upper sealing gasket; 21, protection ring; 22, limiting groove; 3, nut; 31, limiting ring; 32, insertion groove; 4, lower sealing gasket; 41, insertion ring. DETAILED DESCRIPTION

[0019] The following will be described in detail in combination with the accompanying Figures 1-4 The application will be further described in detail.

[0020] The embodiment of the application discloses a special-shaped bolt and nut assembly with a sealing gasket. Figures 1-4The utility model provides a special-shaped bolt nut assembly with sealing gasket, including bolt body 1 and nut 3, nut 3 is connected bolt body 1 by screw thread, nut 3 upper end is provided with the slot 32, the lower sealing gasket 4 is inserted in the upper end of the slot 32, the lower sealing gasket 4 lower end fixed connection insert ring 41, and the insert ring 41 lower end inserts the slot 32;

[0021] The bolt body 1 upper end is fixedly connected with a bolt head 11, the bolt head 11 lower end is fixedly connected with a mounting ring 12, the mounting ring 12 lower end inserts an upper sealing gasket 2, the upper sealing gasket 2 upper end is provided with a mounting groove, and the mounting groove inserts the mounting ring 12;

[0022] By adopting the above technical scheme, the bolt body 1 upper end is fixedly connected with a fixed ring 13 on the side close to the bolt head 11, the fixed ring 13 inserts the upper sealing gasket 2, the inner ring of the upper sealing gasket 2 is provided with a limiting groove 22, the limiting groove 22 is matched with the fixed ring 13, as shown in the figure, and a protection ring 21 is fixedly connected in the lower end of the upper sealing gasket 2, and the protection ring 21 is made of stainless steel. Figure 3

[0023] The upper sealing gasket 2 is fixedly connected on the bolt body 1 through the insertion of the limiting groove 22 and the fixed ring 13, the lower sealing gasket 4 is fixed on the nut 3 through the cooperation of the insert ring 41 and the slot 32, and after the nut 3 is screwed, the two sealing gaskets are tightly attached to the surface of the equipment to be sealed.

[0024] The implementation principle of the special-shaped bolt nut assembly with sealing gasket according to the embodiment of the utility model is as follows.

[0025] Finally, it should be pointed out that: first, in the description of the utility model, it should be pointed out that, unless otherwise specified and limited, the terms "installation", "connection", "connection" should be understood broadly, which can be mechanical connection or electrical connection, or the communication between two elements, or direct connection, "up", "down", "left", "right" and the like are only used to represent the relative positional relationship, when the absolute position of the described object changes, the relative positional relationship may change;

[0026] Secondly: the utility model discloses the embodiment of the drawing, only relates to the structure involved in the embodiment of the utility model, other structures can refer to the usual design, in the case of no conflict, the same embodiment and different embodiments of the utility model can be combined with each other.

[0027] Finally: the preferred embodiments of the utility model are described above only, and are not used to limit the utility model, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

[0028] ​The above are all preferred embodiments of the present application, and do not limit the protection scope of the present application, so that: all equivalent changes made according to the structure, shape, principle of the present application should be covered in the protection scope of the present application.

Claims

1. A profiled bolt and nut assembly with a sealing gasket, comprising a bolt body (1) and a nut (3), characterized in that: The nut (3) is screwed with the bolt body (1), the upper end of the nut (3) is provided with a slot (32), the lower end of the slot (32) is inserted with the lower sealing gasket (4), the upper end of the nut (3) is fixedly connected with the limiting ring (31), the limiting ring (31) is screwed with the bolt body (1), the upper end of the bolt body (1) is fixedly connected with the bolt head (11), the lower end of the bolt head (11) is fixedly connected with the mounting ring (12), and the lower end of the mounting ring (12) is inserted with the upper sealing gasket (2).

2. A profile bolt and nut assembly with a sealing gasket according to claim 1, characterized in that: The upper end of the upper sealing gasket (2) is provided with a mounting groove, and the mounting groove is inserted with the mounting ring (12).

3. A profiled bolt and nut assembly with a sealing gasket as claimed in claim 1, wherein: The upper end of the bolt body (1) is fixedly connected with the fixed ring (13) on one side close to the bolt head (11), and the fixed ring (13) is inserted with the upper sealing gasket (2).

4. A profiled bolt and nut assembly with a sealing gasket according to claim 3, wherein: The inner ring of the upper sealing gasket (2) is provided with a limiting groove (22), and the limiting groove (22) is matched with the fixed ring (13).

5. A profile bolt and nut assembly with a sealing gasket as claimed in claim 1, wherein: The lower end of the upper sealing gasket (2) is fixedly connected with the protection ring (21), and the protection ring (21) is made of stainless steel.

6. A profile bolt and nut assembly with a sealing gasket according to claim 1, characterized in that: The lower end of the lower sealing gasket (4) is fixedly connected with the insertion ring (41), and the lower end of the insertion ring (41) is inserted with the slot (32).

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