May be better alternative than plunger pump in certain applications, such as abrasive liquids. Slower speeds may mean less maintenance. Pump includes one or more single acting plungers, sealed with packing against cylinder walls. Pump has an inlet and outlet check valve for each plunger. Water and other thin liquids, crude oils.
Best way to achieve very high pressures when pumping. This produces a progressing cavity that moves the liquid through the pump and pressurizes it. Rotor is an interference fit inside the electrometric stator to minimize leakage slip. Starting torque may be higher than running torque because of this. Used to pump polymers and dewatered sludge in sewage treatment applications, and in pumping liquids which are viscous or contain solids in industrial plants such as pulp mills, petrochemical, and chemical plants.
Wide variety of thin and thick liquids, including corrosive liquids and liquids containing solids. Sometimes considered the pump of last resort, as it will handle difficult liquids which are viscous or contain solids and which other pump types cannot accommodate. Also available with three screws, one driving the other. Two screw pumps make use of timing gears so that meshing screws don't drive each other.
Triple screw types have one screw driving the other two and don't include timing gears. Fuel transfer, elevators, and other applications requiring relatively high flow rates of viscous liquids. Oils, fuels, and other high viscosity liquids. Highest flow rate of positive displacement pumps. As the rotor turns, the vanes move in and out of the slots. Sliding vanes are often made of carbon.
An alternative to a gear pump for transferring oils and other viscous liquids. Also good for thinner liquids. Also good for thin liquids like gasoline and water.
Good for both thick and thin liquids, so often chosen for terminals and truck unloading where many types of liquids are handled. All Rights Reserved. Version 1. Centrifugal Pumps. General name for pumps with one or more impellers. API Process Pumps. The API pump type applies to pumps built to the API standard for pumps for refineries, pipelines, and other hydrocarbon processing applications.
Axial Flow Pumps. Axial Flow pumps are a very high flow, low head type of pump. Booster Pumps. Booster pumps are used to further boost the pressure in a system.
Potable water distribution, irrigation booster, cooling water booster, process booster service. Canned Motor Pumps. Canned Motor pumps are sealless centrifugal pumps. Chopper Pumps. Chopper Pumps are a type of centrifugal pump that is designed to chop up solids and stringy material as it pumps. Circulator Pumps. Circulator pumps is generally a pump with in-line suction and discharge flanges.
Cryogenic Pumps. Cryogenic pumps are used to handle very low temperature liquids. Drum Pumps. Drum pumps are used to pump small quantities of liquid out of drums and carboys.
End Suction Pumps. End suction pumps are the common type of centrifugal pump. Various impeller types for clean and dirty services, many material options. Any transfer or circulation of liquid.
Fire Pumps. Centrifugal pump used for fire fighting in buildings, plants, and other locations. Grinder Pumps. Grinder pumps are a type of submersible sewage pump that has cutting teeth incorporated onto the impeller, to grind the sewage for pressure sewer applications.
Horizontal Split Case Pumps. Horizontal Split Case pumps are a types of centrifugal pump type has a single double suction impeller supported between bearings.
Jet Pumps. Jet pumps are a type of home water well pump that is used for lower flow rates than vertical turbine types. Magnetic Drive Pumps. Magnetic drive pumps are a type of sealless centrifugal pump. Multistage Pumps. Multistage pumps use multiple impellers with either diffusers or volutes generate more head than single stage single impeller pumps. Regenerative Turbine Pumps. Regererative turbine pumps are not considered a true centrifugal, but works on the same kinetic principal as a centrifugal pump.
Slurry Pumps. Slurry pump is a general term for a pump that handles an abrasive slurry. Self-Priming Pumps. Self-Priming pumps are a type of centrifugal that can be located above the suction reservoir without an external priming system. Submersible Pumps. Submersible pumps involve a submersible motor with a close coupled to single stage pump that allows the entire assembly to operated submerged.
Trash Pumps. Trash pumps are a type of self-priming centrifugal or submersible centrifugal pump designed to handle rocks and other solids while dewatering.
Vertical Sump Pumps. Vertical sump pumps involve a vertical shaft supported in a center column. Vertical Turbine Pumps. Vertical turbine pumps are a vertical shaft pump that is designed to fit in a bore-hole well. Canned pump version excellent for low NPSH services. Well Pumps. A type of vertical turbine pump designed especially for use in a drilled bore-hole well. Irrigation, potable water supply, plant make-up water, cooling water, fire pumps, potable water distribution.
Positive Displacement Pumps. A positive displacement PD pump is a general name for a pump type that does not have impellers, but rather relies on rotating or reciprocating parts to directly push the liquid in an enclosed volume, until enough pressure is built up to move the liquid into the discharge system. AODD Pumps. AODD pumps are any type of reciprocating diaphragm pump containing two diaphragms and driven by air instead of by electric motor.
Concrete pumps are a type of reciprocating positive displacement pump that is specially designed to pump concrete and other mixed aggregate solutions. Diaphragm Pumps. Facebook page opens in new window Linkedin page opens in new window YouTube page opens in new window Website page opens in new window.
Classification of pumps. Jan 25 Classification of Pumps Pumps are divided into 2 major categories: Dynamic and Positive Displacement aka Displacement. Following is some of the pumps under both categories it is impossible to list all : Dynamic Centrifugal pumps Vertical centrifugal pumps Horizontal centrifugal pumps Submersible pumps Fire hydrant systems Positive Displacement Diaphragm pumps Gear pumps Peristaltic Pumps Lobe pumps Piston Pumps.
Dynamic Pumps Centrifugal pumps. Submersible pumps Submersible pumps also known as stormwater pumps, sewage pumps, septic pumps can still operate when being fully submerged in water.
How submersible pump works. Fire hydrant systems Fire hydrant pump system also known as fire pump, hydrant booster, fire water pump is technically not a pump but a system by itself. How AOD pump works. Gear pumps Gear pumps transfer fluid by gears coming in and out of mesh to create a non-pulsating pumping action. How gear pump works. Peristaltic Pumps Peristaltic pumps creates a steady flow for dosing and blending and is able to pump a variety of fluids, ranging from toothpaste to all sorts of chemicals.
There are different types of pumps available in the market. This article will assist you to know the main functionalities of each type of pump.
The type of pump, as well as selection, mainly depend on our requirement. The application mainly includes the type of fluid you desire to pump, the distance you desire to move the fluid, and the quantity you require to get over a particular time frame. However, it is complicated to recognize accurately what kind of pump you must select. The identifying of the pump can be done with the design as well as positions. Dynamic pumps are classified into different types but some of them are discussed below like Centrifugal, Vertical centrifugal, Horizontal centrifugal, Submersible, and Fire hydrant systems.
These types of pumps are most commonly used worldwide. The working is very simple, described well and carefully tested. This pump is strong, efficient and fairly cheap to make.
Whenever the pump is in action, then the fluid pressure will increase from the inlet of the pump to its outlet. The change of pressure will drive the liquid throughout the system.
Flow is established inside a cavity that expands and contracts, such as a piston. Water moves into the cavity during expansion, and is forced out during contraction, while the flow direction is controlled by using check valves. This pump type uses a rotor that traps water in cavities, releasing it at the outlet. These cavities can be the spaces between gear teeth or screw threads, among other configurations.
Both pump types move fluids in a specified direction, but accelerating a fluid continuously is not the same as displacing it in fixed amounts. As a result, there are important performance differences between both pump types. When the system exerts a greater pressure against the pump, flow is reduced.
Flow is constant, regardless of system pressure. The pump simply produces more pressure in response. A higher fluid viscosity reduces flow rate, and efficiency drops. A higher fluid viscosity increases flow rate. When pumps are driven by an electric motor, a variable frequency VFD can achieve major energy savings, by reducing motor RPM when the full pump speed is not required.
However, you must make sure to check compatibility: some pumps are incompatible with VFDs, while others allow speed control above a minimum RPM value. Pumps have multiple applications, and they are widely used in residential, commercial and industrial buildings.
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