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Different types of positive displacement pumps

There are various types of positive displacement pump in the market and they are often classified according to the mechanism used to move the fluid. For example; Rotary Pumps Positive Displacement These incorporate apparatus, screw, vane, peristaltic, flap, and dynamic hole and they all utilization pivoting parts to move the fluid into and out of the pump chamber. Some rotational pumps, for example, outfit pumps, must have tight freedom between the pivoting components and the dividers of the chamber, and between the turning parts, which implies they by and large can't be utilized to pump huge solids or grating liquids that may wear the parts. Different sorts, for example, flap pumps and dynamic pit pumps are intended to move fluids containing solids. Reciprocating Pumps Positive Displacement Counting plunger, diaphragm pump , cylinder, pressure driven, and numerous others - utilize a dull responding instrument to grow and get the chamber at standard interims. Respo...

Types of pumps

·       Peristaltic Pump: A peristaltic pump is a sort of positive relocation pump utilized for pumping an assortment of liquids, they are likewise regularly known as roller pumps. The liquid is contained inside an adaptable cylinder fitted inside a round pump packaging (however straight peristaltic pumps have been made). A  rotor with a number of "rollers", "shoes", "wipers", or "lobes" attached to the external circumference of the rotor compresses the flexible tube. As the rotor turns, the part of the tube under compression is pinched closed (or "occludes") thus forcing the fluid to be pumped to move through the tube. Additionally, as the tube opens to its natural state after the passing of the cam ("restitution" or "resilience") fluid flow is induced to the pump. This process is called peristalsis and is used in many biological systems such as the gastrointestinal tract. Ordinarily, there will be at ...

Working principles of AODD Pumps

Diaphragm Pump A diaphragm pump is a hydraulically or mechanically actuated positive displacement pump that uses a combination of reciprocating action and either a flapper valve or a ball valve to transfer liquids. Diaphragm pumps are self-priming and are ideal for viscous liquids. Virtually all major industries utilize diaphragm pumps. They are commonly used to move abrasive fluids, including concrete, or acids and chemicals. They are also common in automobiles and aircraft. A diaphragm pump is also known as a membrane pump, air operated double diaphragm pump (AODD) or pneumatic diaphragm pump. A diaphragm pump is a type of a type of positive displacement pump that uses the reciprocating action of a flexing diaphragm to move fluid into and out of the pumping chamber. They work when the flexing diaphragm creates a vacuum at the inlet of the chamber that draws the fluid into the chamber. When the diaphragm moves in the opposite direction, it causes the volume of the ...

Advantages of AODD Pumps

  No Electricity : These pumps operate via compressed air. This means that they can be used in environments where an electrical supply is not suitable i.e. in hazardous areas. ·        Simplicity : Without requiring complicated wiring, and no need to have an electrical control, AODD pumps are easy to install and operate. In fact, they are much easier to use than many other pump types. ·        Run Dry : AODD pumps can run dry without damaging the pump or cause any issues. Some other pump types will always need to stay primed and not run dry or they will either damage the whole pump or some of the parts, resulting in a costly rebuild. Here are some of those pump types that cannot run dry: §   Helical rotor pumps §   Centrifugal pumps §   Magnetic drive pumps §   Lobe pumps ·        Abrasive Materials : Just as with handling low and high viscosit...