CN203857032U - Variable rib sealing gasket - Google Patents

Abstract

The variable rib sealing gasket of the utility model comprises: a gasket body, an assembly hole and a connecting hole are respectively arranged in the middle and both sides of the gasket body; and a sealing convex rib body, and the sealing convex rib body is arranged on the On the gasket body, the sealing rib body is ring-shaped, and the sealing rib body is concentrically arranged with the assembly hole; wherein the sealing rib body includes a first sealing rib and a second sealing rib, so The first sealing bead and the second sealing bead are mirror-image symmetric with respect to the straight line perpendicular to the connecting holes on both sides; each of the first sealing bead and the second sealing bead The height of a point is proportional to its distance from said connection hole on the adjacent side. The variable rib sealing gasket of the utility model can transfer excessive bolt tension to the position of the convex rib, realize uniform sealing pressure at the entire convex rib, increase the sealing pressure at the convex rib far away from the bolt, thereby reducing the risk of leakage.

Description

Variable rib sealing gasket

technical field

The design of the utility model variable rib height gasket is particularly a variable rib sealing gasket with a long bolt span.

Background technique

Mechanical devices generally have a joint structure, which mainly includes the following parts: flanges, bolts and gaskets, and all joints basically need to be sealed. The traditional gasket design uses ribs of uniform height, but under high temperature and vibration conditions, coupled with the large flange surface structure, the deformation of the flange surface far away from the bolt position is large, and the contact between the flange surface and the traditional gasket ribs The force is small, and leakage is easy to occur; at the same time, the tension of the bolts is mostly distributed at the bolt position, and the pressure distributed to the ribs of the gasket is uneven. The pressure of the ribs near the bolts is high, and the pressure far away from the bolts is small. Moreover, in some extreme cases, the sealing force of the convex rib far away from the bolt cannot guarantee the sealing requirement, and leakage is prone to occur.

Utility model content

The purpose of the utility model is to provide a variable rib sealing gasket that balances the sealing pressure of the ribs and reduces the risk of leakage.

In order to solve the above technical problems, the variable rib sealing gasket of the present invention includes: a gasket body, an assembly hole and a connecting hole are respectively arranged in the middle and both sides of the gasket body; and a sealing rib body, the sealing The body of the sealing rib is arranged on the body of the gasket, the body of the sealing rib is ring-shaped, and the body of the sealing rib is arranged concentrically with the assembly hole; wherein the body of the sealing rib includes a first sealing rib and a second sealing rib. Two sealing ribs, the first sealing rib and the second sealing rib are mirror-image symmetric to the straight line perpendicular to the connecting holes on both sides; the first sealing rib and the second sealing rib The height of each point on the sealing rib is proportional to the distance from the connecting hole on the adjacent side.

Preferably, the height of the lowest part of the first sealing bead and the second sealing bead is generally 0.2 mm to 0.3 mm.

Preferably, the height of the highest point of the first sealing bead and the second sealing bead is generally 0.4 mm to 0.5 mm.

Preferably, the transition from the highest point to the lowest point is smooth.

The variable rib sealing gasket of the utility model can transfer excessive bolt pulling force to the position of the convex rib, realize uniform sealing pressure at the entire convex rib, increase the sealing pressure at the convex rib far away from the bolt, thereby reducing the risk of leakage.

Description of drawings

Fig. 1 is a structural schematic diagram of the variable rib sealing gasket of the present invention.

Explanation of the reference signs in the accompanying drawings of the variable rib sealing gasket of the present utility model:

1-Gasket body 2-Assembly hole 3-Connection hole

4-First sealing rib 5-Second sealing rib

Detailed ways

The variable rib sealing gasket of the present invention will be further described in detail below in conjunction with the accompanying drawings.

As shown in Figure 1, the variable rib sealing gasket of the utility model is to arrange the first sealing rib 4 and the second sealing rib 5 on the gasket body concentrically with the assembly hole 2, and is designed as a variable height structure, away from the connection The hole 3 is higher, and its height is 0.4 mm to 0.5 mm, and the position close to the connecting hole 3 is lower, and its height is 0.2 mm to 0.3 mm. The convex ribs transition smoothly from low to high, which can be realized by stamping with a variable height die.

The variable rib sealing gasket of the utility model can transfer excessive bolt pulling force to the position of the convex rib, realize uniform sealing pressure at the entire convex rib, increase the sealing pressure at the convex rib far away from the bolt, thereby reducing the risk of leakage.

The preferred embodiments of the utility model creation have been described in detail above, but the utility model creation is not limited to the embodiments, and those skilled in the art can also make various equivalents without violating the spirit of the utility model creation. These equivalent modifications or replacements are all included within the scope defined by the claims of the present application.

Claims (4)

1. Variable rib sealing gasket, including: A gasket body, with assembly holes and connection holes respectively provided in the middle and both sides of the gasket body; and A sealing bead body, the sealing bead body is arranged on the gasket body, the sealing bead body is ring-shaped, and the sealing bead body is arranged concentrically with the assembly hole; wherein The sealing bead body includes a first sealing bead and a second sealing bead, and the first sealing bead and the second sealing bead are mirror images with respect to a straight line perpendicular to the connecting holes on both sides symmetry; It is characterized in that the height of each point on the first sealing bead and the second sealing bead is proportional to the distance from the connecting hole on the adjacent side. 2 . The variable rib sealing gasket according to claim 1 , wherein the height of the lowest part of the first sealing rib and the second sealing rib is generally 0.2 mm to 0.3 mm. 3 . The variable rib sealing gasket according to claim 2 , wherein the height of the highest point of the first sealing rib and the second sealing rib is generally 0.4 mm to 0.5 mm. 4 . 4. The sealing gasket with variable ribs according to claim 3, characterized in that, the transition from the highest point to the lowest point is smooth.