Drum motors are an efficient and reliable conveyor drive system that is used in a wide range of industries. The sealing system of the drum motor is a key component of its design, preventing liquids and contaminants from entering the motor and causing the motor system to rust and corrode.
Drum motors typically use several types of sealing systems to prevent lubricant leakage and contaminants from entering the motor. Lipseals: Lipseals are simple elastomeric seals that seal rotating shafts. They are inexpensive but can wear out quickly in high-speed or high-temperature applications.
Labyrinth seals: Labyrinth seals are mechanical seals that primarily use a series of cavities and gaps to create a tortuous path to prevent leakage. They have no contacting parts and therefore do not wear, but they usually do not provide a perfect seal.
Mechanical face seals: Face seals use two highly polished sealing surfaces that remain in close contact to form an effective seal. They can withstand high speeds and temperatures, but require a robust and precisely designed design.
Magnetic seals: Magnetic seals use opposing magnetic fields to maintain a barrier between sealing environments. They do not have any contact parts but require a complex design to properly focus the magnetic field. They are typically used in very high-speed, high-temperature applications where other seals would fail.
It helps reduce maintenance costs by minimizing the need for repairs or replacements. It also helps to reduce the risk of motor failure due to water damage, thereby improving the overall efficiency of the conveying system.
Drum motors are available in a variety of seal designs. The specific design chosen depends on factors such as speed, temperature, pressure, and the required service life.