GEAR PUMP
GEAR PUMP
Gear Pumps, which are included in the group of positive displacement pumps, use the spaces between the gears to pump fluid. It is one of the most commonly used pump types.
There are two types of gear pumps used to pump high viscosity fluids. External gear pumps, Internal gear pumps. Gear pumps pump a fixed amount of fluid in each revolution.
The fluid that fills the spaces between the pump gears with its own gravity creates a vacuum in the suction port when the pump starts working, and the fluid that is dragged to the discharge port as the gears continue to rotate is transferred from here within the mechanical system. The mechanical distances between the gears are very small tolerances such as 10 microns. These very small tolerances between the gears prevent the liquid from leaking back, increasing the pump efficiency.
The strong solid design of the gears and the pump body provides the ability to pump high viscosity liquids at very high pressures.
GEAR PUMP
There are varieties such as helical and herringbone gears, spur gears.
External gear pumps are generally limited to a maximum working pressure of 210 bar and a maximum speed of 3,000 rpm. Some manufacturers produce gear pumps with higher working pressures and speeds, but these pumps operating at high speeds and pressures can be made by taking special precautions because they are very noisy.
While two external-to-outside gears work side by side in external gear pumps, the idler internal gear positioned to mesh with the external gear in internal gear pumps works together, and a half-moon shaped piece is positioned between the gear gaps to increase efficiency.
GEAR PUMP
Pump formulas:
Flow Rate Lt/ min = Fluid Density X Pump Capacity X speed
GEAR PUMPApplication Areas:
Petrochemical: Pure or filled bitumen, pitch, diesel, crude oil, mineral oil etc.
GEAR PUMP
Chemistry: sodium silicate etc., acids, plastic, mixed chemicals, isocyanates
Paint and ink.
GEAR PUMP
Resins and adhesives.
Cellulose and Paper etc.: acid, soap, soda water, black liquor, kaolin, lime, latex, mud
Food: Chocolate, cocoa butter, fillers, sugar, vegetable fats and oils, molasses, animal food etc.