Centrifugal pumps are used to transport fluids by the conversion of rotational kinetic energy to the hydrodynamic energy of the fluid flow. The rotational energy typically comes from an engine or electric motor. They are a sub-class of dynamic axisymmetric work-absorbing turbomachinery. The fluid enters the pump impeller along or near to the rotating axis and is accelerated by the impeller, flowing radially outward into a diffuser or volute chamber (casing), from which it exits.
Common uses include water, sewage, agriculture, petroleum, and petrochemical pumping. Centrifugal pumps are often chosen for their high flow rate capabilities, abrasive solution compatibility, mixing potential, as well as their relatively simple engineering.A centrifugal fan is commonly used to implement an air handling unit or vacuum cleaner. The reverse function of the Centrifugal Pump is a water turbine converting potential energy of water pressure into mechanical rotational energy.
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Li Baoku: The elderly is an important treasure trove of human resources
Li Baoku: The elderly is an important talent resource treasure trove diesel generator | diesel generator price / 2012-10-11
Beijing, October 11th: Li Baokuo, chairman of the China Youth Development Foundation, pointed out on the 11th that as of the end of 2011, the number of elderly people aged over 60 in China had reached 185 million. Old people have accumulated rich experience in long-term practice and are an important factor. The treasure trove of human resources.
Li Baoku said at the launching ceremony of the second “Writing the Second Spring Prize for Scholars, Calligraphy, and Photo Contest†in the country. After the seniors retired from their jobs and production positions, they were optimistic and optimistic, and they were still Contributing to society is a social group with a relatively high happiness index. In order to mobilize the enthusiasm and creativity of the majority of old friends, the old comrades are encouraged to focus on the “six olds†goal and continue to use their wisdom and experience on the premise of voluntary and dedication to vigorously display their talents and talents and promote the inheritance tradition. Culture continues to make contributions to the country’s economic construction, political construction, cultural construction, social construction, and ecological civilization construction.
He said that organizing the “Writing the Second Spring Prize-winning Essay, Calligraphy and Painting, Photo Contest†activity will build a “second spring of life†display platform for the elderly, which will help display the elderly’s “learning and oldnessâ€. The achievements and experience of the old age have set an example for more elderly people to establish a scientific, healthy and civilized way of life; it is conducive to giving full play to the elder’s intellectual and intellectual advantages, allowing them to do something, be cheerful, and be active. Effectively promote the construction of a harmonious society.
Li Baoku introduced that the collection of the works is targeted at senior citizens over 60 years of age and women over 55 years of age. The competition has a total of 80 first, second and third prizes. Among them: 10 first prizes; 20 second prizes; 50 third prizes. At that time, the organizing committee will organize a selection committee composed of famous calligraphers, painters, photographers, and related media. In accordance with the principles of fairness, fairness, and openness, 80 award-winning works will be selected according to the criteria of ideology, artistry, and social value. The event will end on August 31, 2013 and an awards ceremony will be held in Beijing in October 2013.
It is understood that the China Foundation for the Advancement of Old Age Business Development successfully held the first national "Writing Life Second Spring Prize Essay, Calligraphy, and Photo Contest" in 2011, which has had a good influence among the elderly in the country. The majority of senior citizens actively participated in and enthusiastically submitted contributions, demonstrating from different perspectives the spirit of the elderly who are courageous to make progress, selfless dedication, diversity, and optimism. The participants are 90 years old. (Finish)
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