Gear pumps are one of the most widely used types of positive displacement pumps, which are widely used in various industries including oil and gas, chemical, food and pharmaceutical. These pumps move fluids by rotating two or more gears and have gained great popularity due to their simple design and high efficiency. In this article, we have explored the various components of a gear pump, as well as the structure and function of each of these components.
Main components of a gear pump
1. Ribs
Gear drive
The pinion gear is one of the main components of a gear pump that is connected to the engine and is responsible for transmitting power from the engine to the gears. When this gear rotates, it drives the moving gear and causes the fluid to move.
Mobile equipment
The pinion gear or companion gear is the second gear of a gear pump that is driven by the pinion gear. This gear, together with the pinion gear, moves the fluid into the spaces between the gears and the pump body.
2. Pump body
coincidence
The pump body or casing is the part where the fins are located and through which the fluid moves. The pump body is usually made of corrosion and pressure resistant materials to withstand harsh operating conditions.
Hats
Caps are the parts that fit on both ends of the pump body and hold the gears in place. Caps play an important role in preventing fluid leakage and maintaining the internal pressure of the pump.
3. Shafts
Drive shaft
The drive shaft is responsible for transmitting mechanical energy from the engine to the drive mechanism. This shaft is connected to the drive device and moves the drive device by its rotation.
Movable shaft
The movable shaft is connected to the moving gear and, by rotating the pinion, sets the moving gear in motion. This shaft helps maintain balance and coordination between the gears.
4. Bearings
Bearings are the parts responsible for maintaining and reducing friction between the shafts and the pump body. These parts help the gears rotate smoothly and reduce shaft wear.
5. Valves
Valves or control valves are the parts responsible for regulating the flow of fluid inside the pump. These valves can stop and restrict the flow of fluid, as well as prevent it from returning to the pump.
6. Sealants
Seals are parts used to prevent fluid leakage between the fins and the pump body. These parts are usually made of pressure and chemical resistant materials to reduce fluid leakage.
Gear pump component performance
1. Movement of liquid
Gear pumps move fluid from the inlet to the outlet using rotating gears. The principle of operation of these pumps is that when the drive gear rotates, the moving gear also moves, and the fluid is placed in the spaces between the gears and the pump body and moves to the outlet of the pump.
2. Creating pressure
Gear pumps are capable of generating high pressure, making them suitable for transporting liquids in high-pressure systems. The pressure in these pumps is generated by the rotation of the gears and the transmission of power from pinion to pinion.
3. Flow control
Gear pumps have valves and control valves that are responsible for regulating the flow of fluid inside the pump. These valves can stop and restrict the flow of fluid, as well as prevent it from returning to the pump.
4. Reduce friction
Bearings and seals in gear pumps are responsible for reducing friction between the shafts and the pump body. These parts help the gears rotate smoothly, reduce shaft wear, and increase the life of the pump.
Materials used to manufacture gear pump components
Stable metals
The main components of a gear pump, such as gears, shafts, and pump housing, are usually made of durable metals such as stainless steel, nickel alloy, and bronze. These metals are highly resistant to corrosion and pressure, and have a long service life.
Sustainable polymers and plastics
Seals and some internal parts of a gear pump are usually made of durable polymers and plastics such as Teflon (PTFE) and Nitrile (NBR). These materials have high resistance to chemicals and pressure and reduce fluid leakage.
Bearings
Bearings are usually made of materials such as bronze, steel and ceramics. This material has high mechanical properties, wear and heat resistance, promotes smooth rotation and reduces shaft friction.
conclusion
Gear pumps are one of the most widely used types of pumps due to their high efficiency, simple and robust design, ability to pump aggressive liquids and quiet operation. The displacement is positive. The various components of these pumps, including gears, pump housing, shafts, bearings, valves and seals, play an important role in optimum performance and fluid movement. . A thorough knowledge of gear pump components and their characteristics can help improve the efficiency and performance of systems and reduce operating costs.