Hammasrataspumppuja

Hammasrataspumppuja, or gear pumps in English, are a type of positive displacement pump used to move fluids. They operate by using the meshing of two gears to pump a fluid. One gear is typically driven by a motor, and it rotates the other gear. As the gears rotate, they create expanding cavities on the inlet side of the pump, which draw fluid into the pump. The fluid is then trapped between the gear teeth and the pump casing. As the gears continue to rotate, they force the trapped fluid out through the discharge port.

Gear pumps are known for their simple construction and reliability. They can handle a wide range of viscosities, from low-viscosity oils to high-viscosity pastes. They are also capable of generating high pressures, making them suitable for applications requiring significant force. Common uses for gear pumps include lubrication systems, hydraulic power units, fuel transfer, and chemical processing.

There are two main types of gear pumps: external and internal. External gear pumps have two gears that mesh on the outside. Internal gear pumps have one gear rotating inside another, larger gear. Both types function on the same basic principle of trapping and displacing fluid. While generally robust, gear pumps can be sensitive to abrasive particles in the fluid, which can cause wear on the gear teeth and casing. Regular maintenance and proper filtration are important for ensuring the longevity of a gear pump.