Principles and Applications of Mechanical Seal Technology
Mechanical seal is a device that uses relatively rotating sealing surfaces to prevent fluid leakage, widely used in rotating equipment such as pumps, compressors, and mixers. It is composed of a pair of end faces perpendicular to the axis (one fixed and one rotating) that remain in contact and slide relative to each other under the pressure of springs and media, thereby achieving a sealing effect.
1. Working principle of mechanical seal
The core components of mechanical seals include dynamic rings, static rings, spring-loaded systems, and auxiliary sealing elements. During operation, the moving ring rotates with the shaft, while the stationary ring remains stationary. The two rings maintain contact through spring force and liquid pressure, forming a sealed interface. The small gap between the moving ring and the stationary ring is filled with liquid, forming a thin liquid film that not only seals but also effectively cools and lubricates the sealing surface.
2. Types of mechanical seals
Single end mechanical seal: suitable for general working conditions, with a simple structure and only one pair of friction pairs.
Double end mechanical seal: suitable for high pressure, high temperature or corrosive media, with two pairs of friction pairs, requiring isolation fluid for cooling and lubrication.
Dry running mechanical seal: Used in situations where there is no available liquid, it is made of special materials and can operate for a period of time without liquid.
3. Application of mechanical seals
Mechanical seals are widely used in many industrial fields, such as petrochemicals, electricity, pharmaceuticals, and food processing. In the petrochemical industry, mechanical seals are used to prevent the leakage of toxic, harmful, or flammable liquids; In the power industry, it is used to ensure the efficient operation of cooling systems; In the pharmaceutical and food processing industries, ensure that products are not contaminated.
1. Working principle of mechanical seal
The core components of mechanical seals include dynamic rings, static rings, spring-loaded systems, and auxiliary sealing elements. During operation, the moving ring rotates with the shaft, while the stationary ring remains stationary. The two rings maintain contact through spring force and liquid pressure, forming a sealed interface. The small gap between the moving ring and the stationary ring is filled with liquid, forming a thin liquid film that not only seals but also effectively cools and lubricates the sealing surface.
2. Types of mechanical seals
Single end mechanical seal: suitable for general working conditions, with a simple structure and only one pair of friction pairs.
Double end mechanical seal: suitable for high pressure, high temperature or corrosive media, with two pairs of friction pairs, requiring isolation fluid for cooling and lubrication.
Dry running mechanical seal: Used in situations where there is no available liquid, it is made of special materials and can operate for a period of time without liquid.
3. Application of mechanical seals
Mechanical seals are widely used in many industrial fields, such as petrochemicals, electricity, pharmaceuticals, and food processing. In the petrochemical industry, mechanical seals are used to prevent the leakage of toxic, harmful, or flammable liquids; In the power industry, it is used to ensure the efficient operation of cooling systems; In the pharmaceutical and food processing industries, ensure that products are not contaminated.