초록 ▼

A mobile irrigator with a ribbon of plastic wound on a drum which is frictionally driven by wheels engaged with the ribbon, the wheels being adapted to slide on the plastic to compensate for varying diameters of the drum resulting from more or less windings of the ribbon, the drive for the drum bein

A mobile irrigator with a ribbon of plastic wound on a drum which is frictionally driven by wheels engaged with the ribbon, the wheels being adapted to slide on the plastic to compensate for varying diameters of the drum resulting from more or less windings of the ribbon, the drive for the drum being designed to hold the ribbon taught for passing through guides which shape the ribbon from flat to tube and vice versa. A control is provided for the pump to prevent loss of prime by limited feeding of air into the pump. A supply source of water has an electronic monitoring receiver operating a supply pump discharging into the tube to provide sufficient pressure and attendant fluid level to hold the prime in the irrigator or discharge pump. A pressure sensitive sending command unit is provided at the inlet of the irrigator pump for actuating the supply pump at the water source.

대표청구항 ▼

An irrigation unit comprising a mobile carrier having traction wheels, a drum supported on the carrier, a strip of plastic material adapted to be wrapped about the drum for transport and adapted to be unreeled and formed into a water-carrying tube for distribution over the terrain, and drive means p

An irrigation unit comprising a mobile carrier having traction wheels, a drum supported on the carrier, a strip of plastic material adapted to be wrapped about the drum for transport and adapted to be unreeled and formed into a water-carrying tube for distribution over the terrain, and drive means providing a variable torque slip drive transmitted through said strip wound on the drum for automatically varying the speed of rotation of the drum in a direction wrapping the strip onto the drum as the strip-covered diameter of the drum increases to maintain constant tension on the strip. An irrigator comprising a field traversing mobile unit including a discharge pump, means for delivering water from an associated source to said discharge pump, a supply pump at said source for supplying water from said source through said delivering means to said discharge pump, and means including signal transmission and receiving means for correlating the pumping rate of said supply pump to provide a supply of water at minimum pressure to the discharge pump and to maintain prime in the latter.