Volumetric rotating gear pumps are a type of positive displacement pump that use rotating gears to transfer fluids. These pumps are commonly used in a variety of industries, including chemical, oil and gas, and food processing. The two main types of volumetric rotating gear pumps are external gear pumps and internal gear pumps. External gear pumps consist of two gears, one of which is driven by a motor. The gears rotate in opposite directions, creating a vacuum that draws fluid into the pump. As the gears continue to rotate, the fluid is trapped between the gears and the pump casing, and is forced out of the discharge port. External gear pumps are typically used for low to medium pressure applications. Internal gear pumps, on the other hand, consist of a larger outer gear and a smaller inner gear. The inner gear is driven by a motor, and as it rotates, it meshes with the outer gear. As the gears rotate, fluid is drawn into the pump and trapped between the gears and the pump casing. The fluid is then forced out of the discharge port. Internal gear pumps are typically used for high pressure applications. One of the advantages of volumetric rotating gear pumps is their ability to handle a wide range of fluids, including viscous liquids and liquids with high solids content. They are also relatively simple in design and easy to maintain. However, they may not be suitable for applications that require high flow rates or low pulsation.
positive displacement pump, external gear pump, internal gear pump, viscous liquids, high pressure
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