SPRAYING DEVICE FOR DISCHARGING SPRAY LIQUID, AGRICULTURAL FIELD SPRAYER AND METHOD FOR OPERATING A SPRAYING DEVICE

摘要

The invention relates to a spray device (50) for applying spray liquid, in particular on agricultural areas, with at least one storage tank (52; 52a; 52b; 52c) for at least one spray liquid, with at least one receiving element for receiving and forwarding the spray liquid, a pressure generating member , for generating a delivery pressure for delivering the spray liquid from the storage tank (52; 52a; 52b; 52c) to the receiving element, as well as with one or more valve units (60) arranged between the storage tank (52) and the receiving element. In order to provide a spray device (50) for dispensing spray liquid, in which precise dosing of spray liquid is possible with simple means, the invention provides that the opening and closing times of the one and / or several valve units (60) by means of Pulse width modulation can be automatically controlled and / or regulated as a function of a defined amount of liquid by means of a control device. The invention also relates to an agricultural field sprayer (10) and a method for operating a spraying device (50).