Internal gear pumps are widely used in various industries due to their unique design and efficient operation. This type of pump is often used for transferring high viscosity fluids, such as oils, adhesives, and chemicals. In this article, we will discuss the useful information on internal gear pumps and how they work.
What is an Internal Gear Pump?
An internal gear pump is a type of positive displacement pump that uses a set of rotating gears to transfer fluids. The pump consists of two gears, an outer gear and an inner gear, which mesh together in a close-fitting casing. As the gears rotate, the fluid is drawn into the pump and then pushed out through the discharge port.
One of the advantages of internal gear pumps is their ability to handle high viscosity fluids with ease. The tight clearance between the gears creates a seal that prevents fluid from leaking back into the suction port, allowing the pump to maintain a consistent flow rate. Additionally, internal gear pumps are capable of delivering a wide range of flow rates, making them suitable for a variety of applications.
How do Internal Gear Pumps Work?
Internal gear pumps operate by creating a vacuum at the suction port, which draws fluid into the pump. As the gears rotate, the fluid is trapped in the space between the teeth of the gears and the casing. As the gears continue to rotate, the fluid is pushed towards the discharge port, where it is discharged from the pump.
One of the unique features of internal gear pumps is the way in which the gears mesh together. The outer gear has one more tooth than the inner gear, which creates a void between the teeth of the gears. This void is known as the “crescent,” and it acts as a seal that prevents fluid from leaking back into the suction port.
Applications of Internal Gear Pumps
Internal gear pumps are used in a wide variety of applications, including:
1. Lubrication systems: Internal gear pumps are often used for lubricating machinery in industrial settings. Because they can handle high viscosity fluids, they are ideal for circulating oil and other lubricants.
2. Chemical processing: Internal gear pumps are used for transferring chemicals in the chemical processing industry. Because they are capable of delivering a precise flow rate, they are suitable for metering chemicals into a process.
3. Adhesive dispensing: Internal gear pumps are often used for dispensing adhesives and other viscous materials. They are capable of delivering a consistent flow rate, which is vital for ensuring that the adhesive is applied evenly.
4. Food and beverage processing: Internal gear pumps are commonly used in the food and beverage industry for transferring food products, such as chocolate, syrup, and molasses.
Conclusion
Internal gear pumps are a useful tool for transferring high viscosity fluids in various industries. They operate by creating a vacuum at the suction port, which draws fluid into the pump. As the gears mesh together, the fluid is trapped and pushed towards the discharge port. Because they can handle a wide range of flow rates and are capable of delivering a consistent flow rate, internal gear pumps are suitable for a variety of applications.
