Is it the viscosity reason why gear pumps are less used in processing?
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Everyone can share their insights based on their usage experience
Indeed, the first is viscosity, and the second is flow rate.
Traffic must be the main reason, right?
Gear pumps belong to positive displacement pumps and require the installation of safety valves, which is rather troublesome.
If a simple solution works, there’s no need for a complex one – that’s the principle.
For process pumps, it is generally required that the flow rate be adjustable; in the case of centrifugal pumps, the flow rate can be controlled indoors by adjusting the opening degree of the control valve The volume pump cannot be regulated via throttling on the back pressure side, as this will cause pressure buildup at the outlet! Besides, gear pumps generally have a low flow rate anyway; it’s not worth going the extra effort of using an inverter to adjust the flow
Generally speaking, the first is technology, and the second is the economy. In corrosive environments, gear material selection is a problem.
Advantages: simple and compact structure, small size, light weight, good manufacturability, low cost, strong self-priming ability, insensitivity to oil contamination, wide speed range, capability to handle shock loads, easy maintenance, and reliable operation. Disadvantages: unbalanced radial force, large flow pulsations, high noise, low efficiency, poor interchangeability of components, difficulty in repair after wear, and unsuitability for use as a variable pump.
I agree with the view above: one factor is traffic volume, and the other is stickiness; the pump is selected based on its properties
It is better to choose the pump type according to the system requirements.