Children: Pumps
A peristaltic pump is a type of positive displacement pump used to move fluids through a tube or hose. The pump operates by using a rotating mechanism, typically a series of rollers or shoes, that compresses a flexible tube or hose. As the rollers rotate, they create a series of waves that push the fluid through the tube in a manner similar to how food moves through the digestive tract via peristalsis.
A piston pump is a type of positive displacement pump that uses a piston to move fluids. It operates by drawing fluid into a cylinder using a piston mechanism, and then forcing it out under pressure by moving the piston in the opposite direction. Piston pumps are commonly used for various applications due to their ability to handle high pressures and a wide range of fluid viscosities.
A **pistonless pump** is a type of pump that operates without the use of pistons to move fluids. Unlike traditional piston pumps, which use a reciprocating motion to create pressure and flow, pistonless pumps rely on other mechanisms, such as rotary movement or diaphragm action, to achieve fluid movement. ### Types of Pistonless Pumps 1.
A plunger pump is a type of positive displacement pump that uses a reciprocating plunger to move fluids. It typically consists of a cylinder and a plunger that moves back and forth within the cylinder to create pressure and flow. When the plunger moves in one direction, it creates a vacuum that allows fluid to enter the cylinder through an inlet valve.
A progressing cavity pump (PCP) is a type of positive displacement pump that is often used for pumping viscous fluids, slurries, or in applications where a consistent flow rate is required. It operates based on a unique design that features a helical rotor turning within a stationary helical stator, creating a series of sealed cavities that move the fluid through the pump. ### Key Components and Operation 1.
A Pulser pump is a type of pump commonly used in various industrial applications, especially in hydraulic systems, water treatment, and chemical processing. These pumps are designed to deliver fluid in pulses, rather than a continuous flow. This pulsing action can be beneficial for several reasons, including: 1. **Controlled Fluid Delivery**: The pulsing mechanism allows for precise control over the volume and flow rate of the fluid being pumped.
A pulsometer pump is a type of reciprocating pump that is used primarily for pumping water and other fluids. It is known for its ability to handle dirty or abrasive liquids and is commonly used in applications such as irrigation, drainage, and other industrial processes. Key characteristics of pulsometer pumps include: 1. **Working Principle**: Pulsometer pumps operate through a cyclic process where a diaphragm or piston creates a pressure difference that moves the fluid through the pump.
"Pump" can refer to different things depending on the context. Here are a few common interpretations: 1. **Mechanical Device**: A pump is a mechanical device that moves fluids (liquids or gases) by mechanical action, often converted from electrical energy or another form of energy. Pumps are used in various applications, including water supply, heating and cooling systems, industrial processes, and more.
"Pump as turbine" (PAT) refers to the use of a centrifugal pump or axial pump in reverse operation to generate energy, functioning like a turbine. This concept is particularly useful in hydropower applications where a system traditionally designed for pumping water can be effectively utilized to produce electricity, especially during low-flow conditions or in micro-hydropower systems.
A pump dispenser is a mechanism used to dispense liquid products in a controlled manner. It typically consists of a pump mechanism, a nozzle or spout, and a container that holds the liquid. When the user presses down on the pump mechanism, it creates suction that draws liquid from the container and pushes it out through the nozzle.
A **pump inducer** is a component commonly used in centrifugal pumps, particularly in applications where the pump operates under conditions that could lead to cavitation (the formation of vapor bubbles in a liquid). The inducer is typically located at the inlet of the pump and is designed to improve the flow of liquid into the pump's impeller, thereby increasing the overall efficiency of the pump and helping to prevent cavitation.
A pumpjack, also known as a beam pump or a nodding donkey, is a mechanical device used to extract crude oil from an oil well. It is commonly used in onshore oil production and is characterized by its distinctive appearance, which resembles a horse's head nodding up and down. The pumpjack operates by converting the rotary motion of an electric or gas-powered motor into the alternating motion required to lift oil from a well.
The Quasiturbine is a type of rotary engine that was developed as an alternative to traditional internal combustion engines. It was invented by French engineer Michel Pêne in the 1990s. The Quasiturbine operates based on a novel design that aims to provide high efficiency, reduced emissions, and improved power output compared to conventional piston engines.
A radial piston pump is a type of positive displacement pump that features pistons arranged radially around a central axis or cylinder. In this design, the pistons move in and out of their cylinders in a radial fashion, which allows for efficient fluid transfer. Radial piston pumps are often used in hydraulic systems where high pressures and precise control are required.
A reciprocating pump is a type of positive displacement pump that uses a back-and-forth (reciprocating) motion to move fluid. This motion is typically achieved using a piston, diaphragm, or plunger that moves within a cylinder. The fundamental operation of a reciprocating pump involves the following key components: 1. **Piston/Plunger/Diaphragm**: The reciprocating element that moves back and forth to draw in and expel fluid.
A rope pump is a simple and effective type of water lifting device used primarily in rural and less developed areas for extracting water from wells or other sources. It consists of a long, flexible rope with a series of cups or containers attached to it. The rope is looped around a cylindrical casing or a pulley system, allowing it to rotate. When the rope is turned, the cups lift water up from the source and discharge it at the top.
A rotary compression pump is a type of positive displacement pump that uses rotary motion to compress fluids, primarily gases. These pumps typically consist of one or more rotating elements, such as rotors or screws, that move the gas through the pump mechanism. As the gas moves through the pump, the volume decreases, leading to an increase in pressure. **Key Characteristics of Rotary Compression Pumps:** 1.
A rotary vane pump is a type of positive displacement pump that utilizes a rotating mechanism to move fluids. This pump consists of a rotor with multiple vanes (blades) that slide in and out of slots as the rotor turns. The design allows the pump to create a vacuum or generate pressure, which enables it to transfer fluids efficiently. ### Key Features of Rotary Vane Pumps: 1. **Construction**: The pump typically has a cylindrical housing within which the rotor is positioned.
A rotodynamic pump, often referred to as a centrifugal pump, is a type of dynamic pump that utilizes rotational energy to move fluid. The core principle behind rotodynamic pumps is the conversion of mechanical energy from a rotating impeller into kinetic energy in the fluid, which is then converted into pressure energy. ### Key Features of Rotodynamic Pumps: 1. **Impeller**: The primary component that imparts kinetic energy to the fluid.
The Roundabout PlayPump is an innovative device designed to provide both recreational play and access to clean drinking water in communities, particularly in rural areas of developing countries. It combines a merry-go-round with a water pump, allowing children to play on the equipment while simultaneously generating water for community use. When children spin the Roundabout, the mechanical energy generated from the motion is converted into pumping water from a borehole or well into a storage tank, making it accessible for drinking and sanitation purposes.