Types of pumps pumps come in a vast array of shapes and sizes and in a great range of designs. One type would be used for transferring water from a well to a tower. Typical head and discharge capacities for different types of pumps and waterlifting devices. This type uses a rotating impeller to draw water into the pump and pressurize the discharge flow. It is, essentially, the earliest form of machine, dating back to ancient egypt.
According to power sources water lifts can be classified as manual, animal and power. 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. Since pumps have been around for such a long time, it is no. The decision to produce this series of manual was prompted by the positive. The following waterlifting devices are described in this manual. A pump is a device which moves fluids by mechanical action, from one place to the other. The shaduf is the first device used for lifting water in several civilisations and thus the earliest form of pump. A deep well model can efficiently draw from a water level as deep as 75 or 80 feet below the pump greater depths are possible but efficiency suffers. All rotodynamic pumps have a characteristic of the kind illustrated in fig. Pdf evolution of water lifting devices pumps over the centuries. Thus, it is very important that you should have awareness about the different types of pumps and their features in order to decide which one suits best for your needs.
Low cost for water like liquids economical for large flows. A shallow well jet pump can lift water from a depth of up to 25 feet below the pump. Evolution of water lifting devices pumps pump fundamentals. Learn vocabulary, terms, and more with flashcards, games, and other study tools. The chain pump is used to lift water from shallow wells and works most. Here we give just a few examples of pumps from a range of di.
The type of pump, as well as selection, mainly depend on our requirement. Different in design and application they each basically serve the same purpose, which is to move water from point a to point b. Jet pumps come in two types, shallow well and deep well. Irrigation pumps, in general, are driven either by engines or electric motors. The presentation will generally follow a framework of progressivelydecreasing speci. Animalpowered chinese liberation pump mechanism uses steel components. Types and selection of pumps the mechanical device or arrangement by which water is caused to flow at increased pressure is known as a pump and the process of using a pump for this purpose is known as pumping. Water lifting devices food and agriculture organization of the. These were powered by manual foot pedals, hydraulic waterwheels, or. Types positive displacement pumps a lobe pump a positive displacement pump causes a fluid to move by trapping a fixed amount of it then forcing displacing that trapped volume into the discharge. Selection of a pump for lifting water in a developing country involves. The application mainly includes the type of fluid you desire to pump, the distance you desire to move the fluid, and the.