Mechanical seal is a sophisticated and complex basic element, which is used in the production and manufacturing process of the pump, and has great help to the seal of the pump. There are many kinds of mechanical seals, the selection of mechanical seals should be taken into consideration when choosing the use and installation of equipment.
Selection method
Mechanical seal according to the working conditions and the medium properties are different, high temperature resistance, low temperature mechanical seals, pressure resistant, corrosion resistant mechanical seal, light hydrocarbon medium particle medium mechanical seal and adapt easy vaporization of the mechanical seal, should choose different according to different use types and materials of mechanical seal. Alcohol pump
The main parameters of the selection are: the pressure of the sealed cavity, the temperature of the fluid, the working speed, the characteristics of the fluid, and the effective space for the installation of the seal.
The basic principles of selection are as follows:
1. according to the pressure of sealed cavity, it is determined that the seal structure is balanced or non - balanced, single end or double end.
2. according to the working speed, it is determined to adopt rotating or static type, fluid dynamic pressure type or non contact type.
3., according to the temperature and fluid properties, we can determine the friction pairs and auxiliary sealing materials, and correctly select lubrication, rinsing, thermal insulation, cooling and other mechanical seal circulation protection system.
4. also according to the location and size of the installation, choose to adopt multi spring, single spring, wave spring, internal loading type, outfit and so on.
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