Advantages and disadvantages of gear pump

Gear pump, as a common hydraulic pump, has a series of advantages and disadvantages. Here is a detailed analysis of its advantages and disadvantages:
​advantage
Simple structure, small size, light weight: the design of the gear pump is relatively simple, which makes its manufacturing process good and the price is relatively low. At the same time, its compact size and lightweight design is easy to install and maintain, suitable for use in a variety of applications.
Smooth operation, low noise: the gear pump can maintain a stable state during operation, and the noise generated is relatively low, which helps to provide a relatively quiet working environment.
Wide range of applications: gear pumps can transport a variety of types of fluids, including high pressure and high viscosity fluids, and the viscosity or density of the fluid in the process will not be affected too much. This makes it widely used in a variety of industrial fields.
High efficiency: gear pumps can achieve high operating efficiency, usually up to 93% ~ 98%, which is very ideal for most applications.
Strong self-priming ability: the self-priming ability of the gear pump is good, and it can achieve self-priming at a certain height, without the need for external auxiliary equipment.
Strong anti-pollution ability: gear pump anti-pollution ability is strong, can adapt to some of the more harsh working environment, reduce the failure and downtime caused by pollution.
Can withstand impact load: gear pump can withstand a certain impact load, suitable for some occasions that need to start and stop frequently.
shortcoming
Poor sealing performance and easy to leak: especially under high pressure conditions, the sealing performance of the gear pump may be affected, resulting in leakage problems. This can increase oil consumption and pollute the environment.
Higher requirements for lubricating oil: Because the gap between the gears is small, the gear pump has higher requirements for the quality of lubricating oil and the replacement cycle. The lubricating oil needs to be replaced and maintained regularly to ensure the normal operation of the pump.
Flow and pressure are limited by the size and speed of the gear: the flow and pressure of the gear pump are limited by the size and speed of the gear, and are not suitable for large flow and high pressure applications. This may limit its application in some specific areas.
Flow adjustment range is small: the flow of the gear pump mainly depends on the speed of the gear, and the speed range is limited, so the flow adjustment range is also small. This may affect its application in situations where precise flow control is required.
Low idling efficiency: When the liquid is pumped too little, the gear pump will idling, at this time the efficiency is very low, and easy to overheat. This can increase energy consumption and shorten the life of the pump.
Large axial thrust: the gear pump will produce a large axial thrust during operation, which requires additional thrust bearings to withstand. This can increase the structural complexity and manufacturing costs of the pump.
Limited suction height: the suction height of the gear pump is limited by the diameter of the gear, and high liquid level is required for large flow. This may limit its use under certain installation conditions.
In summary, the gear pump has the advantages of simple structure, smooth operation and wide application range, but it also has the disadvantages of poor sealing performance, high requirements for lubricating oil, limited flow and pressure. When selecting and using gear pumps, it is necessary to comprehensively consider the specific application needs and working environment.