How does a pneumatic lubricator work?

Pneumatic lubricators usually consist of a compressed air source, a lubricant storage tank, a lubricant pipeline, a lubrication point, and a control element. These parts work together to achieve automatic, continuous, and precise supply of lubricants.

Working Principle

Compressed air source: The pneumatic lubricator first requires a compressed air source, such as an air compressor or a compressed gas bottle. This source provides enough compressed air to drive the delivery of lubricants.

Mixture of compressed air and lubricants:

A portion of the compressed air enters the lubricant storage tank to increase the pressure in the tank.

When the pressure in the storage tank reaches a certain level, the lubricant is pushed by the compressed air and transported to the lubrication point through the pipeline.

In some designs, compressed air and lubricants are mixed in a mixer to form an oil-air mixture, which is then transported to the lubrication point together.

Transmission and distribution of lubricants:

Under the push of compressed air, the lubricant flows continuously along the inner wall of the pipeline and eventually reaches the equipment parts that need lubrication.

In some complex designs, pneumatic lubricators may include progressive oil distributors to ensure that each lubrication point receives the right amount of lubricant.

Lubrication of lubrication points:

The lubricant is introduced into the lubrication points in the form of fine oil droplets, forming a continuous wave-flowing gas-liquid two-phase film without atomization, providing effective lubrication and cooling for equipment components.