Impact sprinkler

Impact sprinkler used for irrigation of large areas and are employed in agriculture and horticulture and landscape management. You see them often on sports, golf or tennis. The design is usually made of aluminum die-casting, simple sprinklers are also made ​​of plastic.

In professional fields, the sprinklers are usually placed on stands, often placed in the garden area with a simple ground stake into the ground. Impact sprinkler work with only one nozzle, and therefore have a high range on. The surface irrigation is done by breaking the water jet with a jet separator. In addition, can often be swung into the beam and a width restrictor plate. High quality finishes have partially change nozzles or flow adjuster.

Operation

The beam splitter is a wedge- shaped lever in the beam and is deflected by the latter against a spring to one side. The spring bias ensures that the lever swings back again. The stroke of the lever can be frequently changed by an adjusting screw. Due to the special Anströmgeometrie the sprinkler is rotated with each stroke of the beam Renner by a certain angle. The beam splitter ensures that the beam of the sprinkler is fragmented and is such a distribution of the water jet on the surface to be irrigated, the uniformly fails more or less depending on the setting Lever Stroke.

If you want to only one sector and not irrigate full circle, then a Sektorbegrenzer can be swiveled. This can be set with two of the most continuously adjustable sector stops to be sprinkled sector. The performance by the Sektorbegrenzer to a stop so the flow of the beam Renner is switched so that the sprinkler rotates back in the opposite direction. The forward rotation is usually slow and the turning back quickly. This results in a characteristic sound.

When using the Sektorbegrenzers the Strahlanströmung must be switched by the Hubschwung the beam racer. If the water pressure is too low, the stroke is set too low or the changing-over of the locking device is too high, it can easily happen that the stop is no changeover. The sprinkler depends then fixed in one position and can not fulfill its task of uniform irrigation.

Invention and impact

The first impulse sprinkler was developed by H. Orton Englehart from Glendora (California ) and 1933 registered in the United States patent, issued in April 1935. Englehart sold the rights to his patent to Clement and Mary LaFetra that started in her barn with the production of the Rain Birds on 13 October 1935. The Impact sprinkler had positive influences on the development of agricultural productivity. The invention was therefore recognized in 1990 by the American Society of Agriculture Engineers as important historical event.

Benefits

• Long range because the water pressure is not distributed to a plurality of nozzles
• Variable width and arc adjustment

Disadvantages

• Relatively loud operating noise
• Complicated setting
• Depending on the water pressure
• Frequently uneven distribution of irrigation