Gear pump :- The gear pump is a positive displacement rotating pump which assist you to move water otherwise fluid with the help of inbuilt gears.This type of pump includes two or more gears that creat vaccume force to drive the liquid within the pump. This pump can be built with different parts like shaft , rotors and casing.
These pump have high pressure are available in tiny size to supply constant liquid flow. The main benefits of using these pumps are superior like it can drive high thickness fluid , easy to use , operate and also maintain.
Screw pump:- This is a positive displacement pump which can be built with several screws. These screw are intermeshed to pressure liquids and move them within a system. The screws in the pump take the fluids and push out from another surface while growing its pressure.
The construction of this pump is consistent as well as simple in making. It has three screws spindles where one screw is driver and remaining two screws are driven. The screw have a good clearance among them and it is responsible for the fluid pumping action. The liquid supply to the screw is given throughout the motor.
These pumps have a casing with inlet as well as an outlet, where the inlet is always selected at the bottom of the pump and outlet is selected at the upper side of the pump. All these can be observed in construction. It has a relief valve mounted at the outer end.
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