Overview and Scientific Selection of Mechanical Seals for Circular Arc Gear Oil Pumps

[1] Overview of Mechanical Seals for Arc Gear Pumps Chemical enterprises may come into contact with many corrosive, toxic, and substance substances during production. In order to avoid threatening the lives of workers and preventing pollution to the natural environment, it is necessary to seal the arc gear pump well to prevent leakage. The circular arc gear pump adopts a mechanical sealing method, which has better performance, longer service life, and good buffering ability than using packing sealing. However, the structure of the circular arc gear pump is more complex than that of packing sealing, requiring higher machining accuracy and strict installation requirements. This puts forward high technical requirements for the installation personnel. It is necessary to identify the causes of mechanical seal failure in the circular arc gear pump and develop practical solutions to improve the service life of the mechanical seal

Mechanical seals, also known as end face seals, can achieve good adhesion and relative rotation between the two end faces due to the force exerted by the working medium and spring force on the dynamic and static contact surfaces perpendicular to the gear pump shaft, avoiding leakage of the working medium from the contact surface. They are mainly used for sealing the rotating shaft of various pumps, hydraulic transmission and other equipment. Axial seals that are prone to leakage can be transformed into tight mechanical seals. During operation, a thin liquid film will be formed between the dynamic and static rings, serving as a sealing medium and achieving good lubrication to prevent severe wear of the friction pair

[2] Selection of Mechanical Seals for Circular Arc Gear Oil Pumps

The selection of models also has a significant impact on the mechanical seals of circular arc gear oil pumps. Improper model selection can easily affect the sealing effect and the service life of circular arc gear oil pumps.

According to the different sealing forms, mechanical seals are mainly divided into various forms of seals, such as internal seals, external seals, and single-sided seals. When selecting relevant forms, it is necessary to choose according to the actual working situation of the circular arc gear oil pump, otherwise it is easy to cause excessive or insufficient end face pressure, which affects the normal operation of the circular arc gear oil pump

In order to improve the mechanical sealing performance of pumps, improvements should be made in equipment selection during sealing technology processing. It should be noted that mechanical seal equipment for pumps is different from other mechanical seal management, and improvements should be made to its seal management work. The selection of control equipment is a method that should be improved in the management of mechanical seals for pumps. As the control of equipment selection has a significant impact on mechanical seals, if equipment selection cannot be well controlled, it will hinder the control of mechanical seals for pumps and affect their effectiveness