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Sealing characteristics of contact finger of inclined coil spring


Release time:

2022-04-24

Mechanical seal is a safe and reliable seal, which is widely used in fluid sealing. In the sealing process, it will not be worn due to direct contact with the rotating shaft, so that a better sealing effect can be obtained, leakage can be reduced, and the safety and reliability of the machine can be improved. The mechanical seal structure of the inclined spiral spring uses the inclined spiral spring as the elastic compensation element of the mechanical seal, and the elastic deformation of the inclined spiral spring is large. Elastic change is small, so that the mechanical seal has a better sealing effect.

Sealing characteristics of contact finger of inclined coil spring

Sealing characteristics of contact finger of inclined coil spring

Mechanical seal is a safe and reliable seal, which is widely used in fluid sealing. In the sealing process, it will not be worn due to direct contact with the rotating shaft, so that a better sealing effect can be obtained, leakage can be reduced, and the safety and reliability of the machine can be improved. The mechanical seal structure of the inclined spiral spring uses the inclined spiral spring as the elastic compensation element of the mechanical seal, and the elastic deformation of the inclined spiral spring is large. Elastic change is small, so that the mechanical seal has a better sealing effect.

弹簧触指

In some special occasions, such as high temperature, high pressure, high speed and other mechanical seal conditions, the performance of ordinary cylindrical compression coil spring mechanical seal is difficult to meet the requirements. In order to meet the needs of modern large-scale production, the production of an axial end contact mechanical seal spring, namely oblique ring spring, also known as spring contact finger, contact finger spring. The main feature of the oblique coil spring is the use of axial compression ring ring coil spring coil as a compensation element, rather than the traditional spring push type mechanical seal. During the compression process, each coil in the toroidal coil acts in parallel to the axial direction of compression, resulting in a rotational movement in the circumferential direction. The mechanical seal of this structure relies on the elastic force provided by the tilt ring spring to push the axial sliding of the static ring, compensate for the axial position deviation caused by wear, and can also buffer the changes of vibration and pressure under complex working conditions. Thus, the balance of axial forces between the sealing pairs is maintained, a more stable sealing membrane is formed between the sealing friction pairs, and a dynamic seal is achieved under the pressure of the sealing membrane itself.

Structural features of inclined coil spring:

The coil size of the inclined coil spring is small, the number is large, and its current carrying capacity and technical economy are high. In the case of large flexibility deviation, the oblique coil spring can still maintain a constant force, which can reduce the deformation of the spring and maximize the compensation for the surface unevenness and the influence of the combination tolerance. In addition, the inclined coil spring can withstand a certain compression deformation, so that it can work normally under harsh working environments such as vibration and impact.

The direction of the compression force of the radial oblique coil spring is perpendicular to the centerline (along the radius of a circle), and this type of spring system can be mainly used to pass through the connector; the compression force of the axial oblique coil spring is parallel to the centerline (along the direction of this circle), and this type of spring is used as a seal for general enterprises.


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