Mechanical seals are one of the basic mechanical components with precise and complex structures, and are key components of various pumps, reaction synthesis kettles, turbo compressors, submersible motors and other equipment. Its sealing performance and service life depend on many factors, such as model selection, machine accuracy, correct installation and use, etc.
Mechanical seals selection method:
The main parameters of mechanical seal selection: seal cavity pressure (MPA), fluid temperature (°C), working speed (M/S), fluid characteristics and effective space for installing seals.
Depending on the working conditions and the properties of the medium, mechanical seals include high temperature-resistant, low-temperature-resistant mechanical seals, high-pressure and corrosion-resistant mechanical seals, particle-resistant mechanical seals, and mechanical seals adapted to easily vaporized light hydrocarbon media, etc. The usefulness of selecting mechanical seals of different structural types and materials
The basic principles of selection are:
1: According to the pressure of the sealing cavity: determine whether the sealing structure is balanced or unbalanced, single-end or double-end, etc.
2: According to the working speed: determine the use of rotary or static, hydrodynamic or non-contact.
3: According to the temperature and fluid properties: determine the friction pair and auxiliary sealing materials, and correctly select the lubrication, flushing, heat preservation, cooling and other mechanical seal circulation protection systems.
4: According to the effective space of the installation seal: determine the use of multiple springs or single springs or wave springs, built-in or external.
