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Difference between revisions of "Pumps"
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Rotary positive displacement pumps can be grouped into three main types: | Rotary positive displacement pumps can be grouped into three main types: | ||
* [[Gear | * [[Gear Pumps]] - a simple type of rotary pump where the liquid is pushed between two gears. | ||
* [[Screw | * [[Screw Pumps]] - the shape of the internals of this pump usually two screws turning against each other pump the liquid. | ||
* [[Rotary | * [[Rotary Vane Pumps]] - similar to scroll compressors, consisting of a cylindrical rotor encased in a similarly shaped housing. As the rotor turns, the vanes trap fluid between the rotor and the casing, drawing the fluid through the pump. | ||
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Typical reciprocating pumps are: | Typical reciprocating pumps are: | ||
* [[Plunger | * [[Plunger Pumps]] - a reciprocating plunger pushes the fluid through one or two open valves, closed by suction on the way back. | ||
* [[Diaphragm | * [[Diaphragm Pumps]] - similar to plunger pumps, where the plunger pressurizes hydraulic oil which is used to flex a diaphragm in the pumping cylinder. Diaphragm valves are used to pump hazardous and toxic fluids. | ||
* [[Piston | * [[Piston Displacement Pumps]] - usually simple devices for pumping small amounts of liquid or gel manually. An example is the common hand soap pump. | ||