Rotary lobe pumps are positive displacement pumps that are used in a variety of industries for the transfer of viscous fluids. They are known for their ability to handle high viscosity fluids such as creams, pastes, slurries, and more. In this guide, we will provide an overview of rotary lobe pumps, how they work, their advantages and applications.
What is a Rotary Lobe Pump?
A rotary lobe pump consists of two counter-rotating lobes that rotate inside a casing. The lobes are designed with a specific profile that creates a vacuum on one side and pressure on the other side, which causes the fluid to be drawn into the pump and then pushed out through the discharge port. The pump is equipped with seals that prevent the fluid from leaking out of the casing. This article on what is a rotary lobe pump goes into more detail.
How do Rotary Lobe Pumps Work?
When the lobes rotate, they create a suction force that draws the fluid into the pump. As the fluid is drawn into the pump, it fills the space between the lobes and the casing. As the lobes continue to rotate, the fluid is carried around the casing, and the volume between the lobes decreases, forcing the fluid out of the discharge port.
Advantages of Rotary Lobe Pumps
Rotary lobe pumps offer several advantages over other types of pumps, including:
Ability to handle high viscosity fluids
Rotary lobe pumps are designed to handle fluids with a high viscosity. Due to the unique design of the lobes, these pumps can easily handle thick, sticky, and even abrasive fluids without clogging or damaging the pump.
Gentle handling of shear-sensitive products
Some fluids, such as certain food products and pharmaceuticals, are sensitive to shear forces. Rotary lobe pumps are gentle on these products, which means they can be used to transfer these fluids without changing their properties.
Self-priming capability
Unlike other pumps that need to be primed before use, rotary lobe pumps are self-priming. This means that they can draw fluid into the pump from a lower level without the need for additional priming equipment.
Low pulsation and noise
Rotary lobe pumps operate with low pulsation and noise levels. This means that they can be used in applications where excessive noise and vibration could be a problem.
Easy maintenance
Rotary lobe pumps are easy to maintain. They have fewer moving parts than other types of pumps, which means there is less wear and tear. Additionally, the seals can be easily replaced without the need for special tools or equipment.
Applications of Rotary Lobe Pumps
Rotary lobe pumps are commonly used in a variety of industries, including:
Food and beverage
Food and beverage manufacturers use rotary lobe pumps to transfer a wide range of products, including dairy products, chocolate, honey, and more.
Chemical and petrochemical
Chemical and petrochemical manufacturers use rotary lobe pumps to transfer viscous chemicals, such as paints and coatings, adhesives, and more.
Cosmetics and personal care
Cosmetics and personal care manufacturers use rotary lobe pumps to transfer products such as lotions, shampoo, and other personal care items.
Rotary lobe pumps are versatile and reliable machines that are designed for the transfer of high viscosity fluids, and they offer several advantages over other types of pumps.
