The Basics: What is a rotary gear pump?
A rotary gear pump is a type of positive displacement pump that is used to move fluid from one location to another. This pump is designed with two or more rotating gears that mesh together in order to create a vacuum that pulls the fluid into the pump's chamber.
How does it Work?
As the gears rotate, they create a sealed pocket that traps the fluid and forces it through the pump body and into the outlet. This design allows rotary gear pumps to operate at high pressures and with a constant flow rate, making them ideal for a variety of applications in industries such as chemical, food and beverage, and oil and gas.
The Applications: Where is it used?
Rotary gear pumps are commonly used for transfer and circulation of non-corrosive, low viscosity fluids such as water, oils, fuels, and chemicals. They are also used in hydraulics, lubricant systems, and diesel transfer systems. Their applications extend from industrial processes to automotive and marine purposes.
The Advantages of a Rotary Gear Pump
One of the greatest advantages of rotary gear pumps is their ability to handle high-viscosity fluids without losing efficiency. Additionally, they are designed to operate in extreme temperatures and conditions, making them ideal for use in harsh environments. Rotary gear pumps are also relatively simple to maintain and repair, and can be easily customized to meet specific application requirements.
Types of Rotary Gear Pumps
There are two primary types of rotary gear pumps: external gear pumps and internal gear pumps. External gear pumps use two identical gears that rotate in opposite directions, while internal gear pumps use an outer gear and an internal gear that mesh together.
External Gear Pumps
External gear pumps are among the most common type of positive displacement pumps. They are used for fluid transfer, hydraulic power, and chemical mixing applications. External gear pumps are simple, compact and are best suited for transfer of low to medium viscosity fluids.
Internal Gear Pumps
Internal gear pumps have a more complex design, but are capable of handling high-pressure, high-viscosity fluids. They are often used in lubrication, hydraulic power and polymers industry. Internal gear pumps also generate less noise and are well suited for viscous non-lubricating fluids.
Factors to Consider when Selecting a Rotary Gear Pump
When selecting a rotary gear pump, it is important to consider factors such as the type of fluid being transferred, the flow rate required and the system pressure. Other factors such as the operating temperature, viscosity, and the chemical compatibility of materials used in the construction of the pump should also be taken into account.
Maintenance and Repair
The maintenance and repair of rotary gear pumps generally involves the replacement of worn or damaged parts, such as seals, bearings, and gears. Routine maintenance should include regular inspections, lubrication and cleaning of the pump. It is important to follow the manufacturer's guidelines for maintaining the pump in optimal condition.
Conclusion
Rotary gear pumps are an essential component in many industrial applications and are capable of moving high pressure and high viscosity fluids with ease. Understanding the function of these pumps and selecting the appropriate one for the job is important for maintaining a highly efficient and reliable system.