Pump sealing technology and its improvement method
Pump sealing technology is crucial to ensure the normal operation of the pump and prevent medium leakage. The following is a brief overview of pump sealing technology and its improvement methods:
1. Pump sealing technology
Pump sealing technology mainly includes two categories: static sealing and dynamic sealing. Static seals usually adopt gasket seals, O-ring seals, thread seals and other forms, which have the characteristics of simple structure and good sealing effect. Dynamic seals include soft packing seals, oil seals, labyrinth seals, spiral seals, power seals and mechanical seals. Among them, mechanical seals are widely used because of their good sealing performance and long service life.
Mechanical seals are mainly composed of dynamic rings, static rings, elastic elements, auxiliary sealing elements and other parts. The seal between the pump shaft and the pump body is achieved through the close fit of the dynamic ring and the static ring. Mechanical seals have the advantages of small leakage, good wear resistance and strong adaptability, but the installation and maintenance requirements are high.
2. Improvement methods
Improve the performance of sealing materials: Use high-quality materials that are resistant to high temperature, corrosion and wear to make sealing elements, such as nickel-molybdenum alloy, nickel-chromium-molybdenum alloy, etc., to improve the reliability and service life of the seal.
Optimize the design of the sealing structure: According to the working conditions and medium characteristics of the pump, optimize the design of the sealing structure, such as adjusting the shape of the sealing surface, increasing the width of the sealing surface, and adopting a balanced sealing structure, so as to improve the sealing effect and stability.
Strengthen installation and maintenance: Strictly follow the installation regulations to install the seal to ensure the assembly accuracy and cleanliness of the sealing components. At the same time, strengthen daily maintenance and inspection, timely discover and deal with sealing leakage problems, and prevent the problem from expanding.
Use auxiliary facilities: Add an auxiliary flushing system to the design of the pump to flush impurities in the sealing cavity and cool the sealing surface to prevent leakage caused by impurity deposition and overheating of the sealing surface.
