Modern Day uses of the Archimedes Screw Pump:
The Archimedes Screw Pump has been in existence for over 2000 years, and is still used in modern day applications. There are many different types of pumps that have been invented since Archimedes; however, the screw pump still has its uses in society. The Screw Pump is useful for moving large amounts of water up an elevation desired at a constant rate. These pumps can generate large amounts of water movement. Some of the larger pumps can pump 95,000 gal/ min up 35 feet in elevation. The screw pumps can be found pumping sludge, Irrigation systems, Drainage, constant flow areas (power plants for cooling), removal of non viscous materials, and many more applications. Overall the Archimedes screw pump has proved to be viable as it is still selected over many of the current pumps to do jobs that other pumps cannot do.
The screw pump is a positive displacement pump which pumps a given amount of fluid completely throughout the system. Ideally the screw pump operates above 70 percent efficiency for most of its operating cycle. This is more efficient then most pumps. The theory of the screw pump being 100 percent efficient often is pondered, which even if not 100 percent efficient it still ranks upon the higher level of pumping systems. Another positive advantage for using the screw pump is the ability to handle the different amounts of liquids with a constant speed drive. This remains to be a more cheap method due to not needing a gear change method within the system.
The result of the screw pumpís advantages is the reason for modern day societyís use of the screw pump. It was found in the early ages that the screw pump could not handle higher head capacities. As a result the pump was not used and other pumps were used in its place. Later it was found that other pumps could not handle wastes and sludge, and other viscous materials however, the screw pump could transport these materials with ease. This allowed the screw pump to have a full use, and be widely used among many different societies.
In many different markets of societies the screw pump has evolved itself into a beneficial tool to help civilization. Some of the many various uses are to move sludge's, sewage lift stations, water pumping, land irrigation and/or drainage.
The benefit of the screw pump over many other different pumps is that it can move sludge with fairly minimal difficulty. Where other pumps do in fact bind up with sludge or wastewaters, this is where the screw pump holds strong. The benefit of using the screw pump to move sewages within lift stations are it moves sewage over forty feet and while pumping they require little watch and will continue to pump regardless of them running dry. Moving sludge has many different positive benefits. To move sludge around with ease is a very daunting task which within itself requires a lot of manpower and service to do. The screw pump can be used to move this sludge from lower to higher elevations.
Early US military used this method to pump out the sludge in many of the old ships that were stranded due to the amount of weight at the bottom of the ships. The screw pump over time moved this sludge out of the ships and allowed them to be lifted and repaired. This within itself shows the power of such a pump and shows it has a place within society.
Another use for the Screw pump is Land drainage. In many situations people have used the screw pump because it could pump large volumes of water over different elevations. This is good to control flooding in many areas to lift the water over an elevation to a new elevation. The rate at which it pumps is another benefit to the screw pump and pumping water. The constant rate at which it pumps makes it so water is getting moved with little to no attention is a huge benefit. The cost of having someone attend pumps is large and if you have something that moves efficiently and economically it proves to be much more useful then the average pumps. With this use of the screw pump it can pump at a constant rate, and de-flood given areas with little attention and at a predictable rate. This in itself proves to be a very good and beneficial use to modern day society and civilizations around the world.
There are many examples of the screw pumps that are used within the modern world. The water screw pump in Athens was implemented to pump the storm water run off and wastewater which pumps 1 million m3 per day. Another example of the screw pump in modern day activity is the many different interceptor systems in Des Moines, IA. These interceptor pump stations were designed to allow for the abandonment of five other water treatment centers. These stations flow the many gallons of wastewater to a main central plant in which the water treatment system. Another example of a simple screw pump is the small centrifugal screw pumpís that pump high viscosity liquids. These pumps find a use in civilization for the small duties that need attention for constant rate of pumping.