What is the gear pump?
The gear pump is a mechanical pump that moves liquids using two rotating gears. The liquid flows under pressure from the pump income for discharge in the area created by the teeth of the gears. The liquid also serves to lubricate gears. The low clearance between the walls of the pump chamber and the toothed teeth create a tight seal, preventing the liquid to flow back through the intake. Unlike other types of pumps, the gear pumps may not be prepared and can be lowered for a short time without damaging the pump. They are usually used to pump water, oil and other liquids.
The gear pumps are able to produce very high internal pressures and are often used to draw thick liquids such as pitch and oil. The pump speed must be reduced when viscosity increases to allow the liquid to fill the cavities between the teeth of the gear wheel. The gear pump is capable of drawing a very accurate amount of liquid at high pressure and is often used to draw fuel and heatingOil, diesel and gasoline. The gear pumps are also commonly used in petrol oil pumping and home pumping.
The gear pump works on the shift principle. When gears rotate inside the chamber of the gear pump, they create areas with low and high pressure. A low pressure or vacuum area is created between the teeth of the gears. The liquid flows into this area of lower pressure. As the gears grows, the liquid is caught in the pocket of the formed teeth of the toothed chamber and the wall of the pump chamber. Finally, the area of higher pressure is formed as soon as the gears begin to fit, force the liquid from the gearbox teeth and into the discharge output. In order for the pump to function efficiently, extremely small clearance between the teeth and the wall is necessary. Over time, the gear pump gradually loses its efficiency as the will increase as a result of normal wear.
There are two HLAsTypes of gear pumps, internal and external. The internal gear pump, also known as a gerotor, has two gear. Smaller internal gear fits larger and both rotate in the same direction. Smaller devices always have one less tooth than the larger one and is mounted outside the center in relation to a larger gear shaft. This allows the inner gear to rotate freely inside the external gear and at the same time provides the space needed to draw liquid from income to the drain pump. The power supply is applied to the shaft of the inner gears, which then controls the outer gear.
External gear pumps have two same speed wheels that turn in opposite directions. The liquid is transported in a space created between the teeth of the gear and the hips of the pump chamber. The power supply is applied to the shaft of the driving device, which in turn drives the second gear. The gears are usually used in external gear pumps, even if heroicLunar wheels are sometimes used when there is an excess pump noise.