05-12-2013 дата публикации
Номер: US20130320105A1
Принадлежит:
An agricultural sprayer () with a pump (), a plurality of nozzles, a valve arrangement () associated with the nozzles and a feed conduit (). The valve arrangement () selectively connects the feed conduit () to a bypass conduit () or to the nozzles. A return conduit () branches off from the feed conduit (). A regulation valve () applies a variable degree of throttling to the fluid flowing through the return conduit. A pressure sensor () provides a signal for fluid delivered to the valve arrangement. A flow sensor () provides a signal representing the flow in the feed conduit (). A controller () is in receipt of the sensor signals, receives instructions from an operator and controls the regulation valve () using the instructions from the operator and available measured signals using feedback control loops combined with a feed forward signal. 111. An agricultural crop and field sprayer () , said sprayer () comprising:{'b': 10', '20', '10, 'a sprayer fluid tank (), a positive displacement pump (), the inlet of the pump being in fluid communication with said tank (),'}{'b': 15', '16, 'a boom () divided in boom sections () and each boom section being provided with a plurality of spray nozzles,'}{'b': 28', '16, 'a valve arrangement () associated with said boom sections (),'}{'b': 25', '20', '28, 'a feed conduit () for establishing fluid communication between an outlet of said pump () and said valve arrangement (),'}{'b': 28', '25', '26', '16, 'said valve arrangement () being configured for selectively connecting the feed conduit () to a bypass conduit () or to one or more of the boom sections (),'}{'b': 32', '25, 'a return conduit () branching off from the feed conduit (),'}{'b': 30', '30', '25', '32', '30, 'a regulation valve (), said regulation valve () applying a variable degree of throttling to the fluid flowing from said feed conduit () through said return conduit (), said variable degree of throttling depending on the position of said regulation valve (),'}{'b': 50', ...
Подробнее
