Water Fountain
Water fountains can add a touch of elegance to any zoo, aquarium, garden or other outdoor fun. Fountains can be decorative, or use for function. A large garden like a botanical or Japanese oriented one, can provide drinking water for its patrons. Both decorative and drinking fountains have similar design.
Pumps are used to recirculate the water in a fountain. Depending on the size of the fountain, the pump will vary. Pumps use basic forces like gravity o move water. As the mechanical parts begin to move, air is shifted out of the way. The air creates a low pressure vacuum. This vacuum is filled by water. Straws are a great example.
There are many different types of pumps. Most pumps used in fountains are submerged. Another type of pump used is external, which can be placed anywhere outside of the water. The two most common pumps are positive displacement and centrifugal. Other types of pumps include impulse pumps, velocity pumps, gravity pumps, steam pumps, and valueless pumps.
Displacement pumps move fluid by trapping a fixed amount of liquid and displacing the trapped water into a discharge pipe. Centrifugal pumps use a motor to move fluid. The energy moves into kinetic stage.
