| 摘要 |
Fountain apparatus in which a valve (40B) in the liquid circulating system of a fountain is adapted to control liquid flow to one or more nozzles (73, 74) to effect movement and interaction of the streams dispersed therefrom to produce fountain displays. The valve includes a valve body having two or more outlets (71A, 71B, 72A, 72B), each connected by a conduit (71C, 71D, 71E, 71F) to deliver liquid to one or more single entry or multiple entry nozzles (73, 74), and a hollow valve element (46A) provided with two or more lateral openings (67-69) and an inlet port (66) connected to receive the circulating fountain liquid for transmission through said lateral openings. Reversible drive motors (56, 65) in drive connection with the valve element are adapted to impart linear axial movement and reversible axial rotation of the valve element to periodically position the valve element lateral openings in communication with the valve outlets to control the distribution of liquid to the nozzles. Each valve element opening is provided a size and shape which interacts with a valve body outlet or aligned pairs of valve body outlets to vary the timing and volume of liquid delivered to one or more entry ports of a nozzle or an array of nozzles and thereby control the output and movement of a nozzle dispersal stream and its interaction with other nozzle dispersal streams.
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