An agricultural vehicle, in the form of a combine harvester, includes a threshing and separating system and a cleaning system positioned beneath the threshing and separating system for receiving grain processed by the threshing and separating system. The cleaning system includes a first fan and sieves positioned downstream of a discharge outlet of the first fan. The sieves are positioned such that a stream of air produced by the first fan passes over the sieves. The vehicle also includes a housing having a hollow interior space that is positioned at least partially downstream of the first fan such that the stream of air passes into the hollow interior space. A second fan has a suction side that is in fluid communication with the interior space and a discharge side that exhausts to atmosphere for aspirating the interior space to reduce an air pressure within the interior space.

Weed seeds are destroyed in the chaff from a combine harvester by repeated high speed impacts caused by a rotor mounted in one of a pair of side by side housings which accelerate the discarded seeds in a direction centrifugally away from the rotor onto a stator including angularly adjustable stator surfaces around the axis. Thus the discarded seeds rebound back and forth between the rotor and the stator to provide a plurality of impacts. The seeds are carried axially of the rotor by a controlled airstream so that they move to an axial discharge location where a discharge fan is mounted. The angle of the discharge around the rotor axis can be changed to direct the seeds to the side of the combine away from a straw chopper, towards the guide fins of the tailboard of the chopper, or into the housing of the straw chopper.

A sugarcane harvester includes an extractor assembly that more efficiently and effectively separates leaves, stems, and other waste material from sugarcane billets and ejects the waste material back onto sugarcane fields without blowing the waste material into a wagon or other billet collection vehicle.

A sugarcane harvester includes an extractor assembly that more efficiently and effectively separates leaves, stems, and other waste material from sugarcane billets and ejects the waste material back onto sugarcane fields without blowing the waste material into a wagon or other billet collection vehicle.

Air blower systems are disclosed including a blower, a vacuum component, and an air curtain component. The blower can be connected to the vacuum component to exert a suction force over a vacuum line in fluid communication with a grain cart auger to facilitate removal of chaff as grain is unloaded from the grain cart. The blower can also be connected to the air curtain component having a curtain pipe defining apertures through which forced air can facilitate removal of chaff as grain is being loaded into the grain cart.

Air blower systems are disclosed including a blower, a vacuum component, and an air curtain component. The blower can be connected to the vacuum component to exert a suction force over a vacuum line in fluid communication with a grain cart auger to facilitate removal of chaff as grain is unloaded from the grain cart. The blower can also be connected to the air curtain component having a curtain pipe defining apertures through which forced air can facilitate removal of chaff as grain is being loaded into the grain cart.

Weed seeds are destroyed in the chaff from a combine harvester by repeated high speed impacts caused by a rotor mounted in one of a pair of side by side housings which accelerate the discarded seeds in a direction centrifugally away from the rotor onto a stator including angularly adjustable stator surfaces around the axis. Thus the discarded seeds rebound back and forth between the rotor and the stator to provide a plurality of impacts. The seeds are carried axially of the rotor by a controlled airstream so that they move to an axial discharge location where a discharge fan is mounted. The angle of the discharge around the rotor axis can be changed to direct the seeds to the side of the combine away from a straw chopper, towards the guide fins of the tailboard of the chopper, or into the housing of the straw chopper.