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Internal Gear Pumps: How They Work and Their Benefits

Introduction to Internal Gear Pumps

Internal gear pumps are amazing tools that have lasted for years. Invented by Viking Pump over 100 years ago, they’re still a top product. These pumps are rotary positive displacement pumps. This means they move liquid by trapping a set amount and pushing it through the system with spinning motion. Their simple but strong design makes them great for many industrial jobs.

How Internal Gear Pumps Function

An internal gear pump works in a simple, smart way. Liquid comes in through the suction port. This port sits between the teeth of the rotor gear, which is the bigger, outer gear, and the idler gear, the smaller, inner gear.

When the gears spin, they make open spaces on the inlet side. These spaces create low pressure. The low pressure pulls liquid into the pump. The liquid then moves between the gear teeth. A key part is the crescent-shaped seal at the pump head. This seal stops liquid from flowing back to the suction side. When the gears mesh again on the discharge side, the liquid is pushed out through the discharge port.

This setup lets the pump handle liquids of different thicknesses, from thin solvents to thick oils. This makes internal gear pumps very flexible for many uses.

Key Features of Internal Gear Pumps

Knowing the features of internal gear pumps shows why they’re so great.

Spinning Motion: The gears’ turning pulls in and pushes out liquid smoothly.

Volume Control: The gears lock liquid in set spaces. This keeps the liquid amount steady.

Low Pressure Areas: When gears unmesh, they make low-pressure zones. These pull liquid into the pump.

Crescent Seal: The crescent blocks the suction side from the discharge side. This stops backflow.

Flexible Use: The design handles thin liquids like solvents and thick ones like oils.

These features make internal gear pumps reliable and useful in many fields.

Advantages of Using Internal Gear Pumps

Internal gear pumps have lots of perks that make them a top pick for many industries.

Great Efficiency: The pump’s design keeps a steady flow, no matter the pressure. This saves energy.

Self-Priming: These pumps clear air or gas from the suction line easily. This keeps work going without stops.

Tough Build: Made with strong parts, these pumps last long, even in rough settings.

Handles Many Liquids: They work with thin solvents and thick molasses. This makes them super versatile.

Quiet Running: The gear design makes the pump run smoothly and quietly. This creates a comfy work area.

Exact Flow Control: You can change the flow by adjusting the spin speed. This is key for accurate dosing and quality.

Low Upkeep: With fewer moving parts, breakdowns are rare. This cuts maintenance costs.

These benefits make internal gear pumps perfect for jobs needing steady and tough performance.

Applications of Internal Gear Pumps

Thanks to their special features, internal gear pumps are used in many industries.

Chemical Processing: They handle chemicals, even corrosive or thick ones, with ease.

Food and Beverage: These pumps move food products, like thick liquids, without trouble.

Pharmaceuticals: Their precision and reliability are great for drug making, where accuracy matters.

Oil and Gas: They move crude oil and other thick fluids in oil and gas work.

Pulp and Paper: They handle thick slurries in pulp and paper making efficiently.

Their ability to manage clean fluids and those with bits in them makes them a great fit for many settings.

Choosing the Right Internal Gear Pump from POOCCA

When picking an internal gear pump, POOCCA Hydraulic (Shenzhen) Co., Ltd. is a great choice. They have over 26 years of experience in hydraulic systems. POOCCA makes pumps, motors, valves, and parts. They offer custom solutions for fields like building, farming, marine, oil and gas, and more.

POOCCA’s facilities cover 8,000 square meters. They use high-tech tools like CNC machining centers and automatic check systems. This ensures top-quality products made for specific jobs. Their product list includes up to 1,600 types, covering internal and external gear pumps like:

Ronzio Z3 Series Gear Pump

CBK Series Hydraulic Gear Pump

Hydromax HGP Series High Pressure Gear Pumps

Parker PGP505 Series Aluminum Gear Pumps

Each product is built for high efficiency, up to 97%. They’re designed to run quietly under high pressure. For example, the Ronzio Z2 Gear Pump uses pressure-balanced bushing blocks. It has capacities from 4 to 31 cm³/rev and works at pressures up to 300 bar. This makes it great for tough settings.

POOCCA’s team helps clients at every step. They offer advice based on liquid thickness or temperature needs. They also provide support after sales, with warranties up to 12 months. They offer fast international shipping and custom packaging to protect products during transit.