SPRAY SYSTEM FOR AN AGRICULTURAL VEHICLE AND A SPRAYING METHOD USING SUCH A SYSTEM Russian patent published in 2022 - IPC A01M7/00 B05B12/00 B05B9/04 

FIELD: agriculture.

SUBSTANCE: group of inventions relates to the field of agriculture. The system (100) contains a spray rod (102) and a circuit (101) containing a reservoir (103) for accommodating the processing fluid, a pump (104) containing an inlet (107) and outlet (108), a servo-controlled pressure regulator (105) communicating with the outlet (108) of the pump (104) on the inlet side and with the reservoir (103) or inlet (107) of the pump (104) on the outlet side, a set of spray sections (106) mounted on the spray rod (102). Each spray section (106) contains at least one spray device (109) containing at least one spray nozzle (109a) designed to spray the processing liquid on plants, the first distributor (110) communicating with the outlet (108) of the pump (104) on the inlet side and with the spray device/devices (109) of the spray section (106) on the outlet side, a direct-acting pressure limiter (111), located between the first distributor and the spray nozzle/nozzles (109a) of each spray device (109) of the spray section (106), the control unit (113). The circuit (101) also contains a second distributor (112) communicating with each spray section (106) on the inlet side and with the reservoir (103) or inlet (107) of the pump (104) on the outlet side. The second distributor (112) is designed to ensure the circulation of the processing fluid from each spray section (106) into the reservoir (103) or inlet (107) of the pump (104) when it is in the open position, and blocking the specified circulation of the processing fluid in the closed position. The control unit (113) is designed with the possibility of implementing a stage (300) of filling the spray system (100), including sub-steps for setting (301) the first value (V1) of the threshold pressure to the threshold pressure (Ps) of the pressure regulator (105), while the first value (V1) of the threshold pressure is less than the set calibration pressure (Pt) of the pressure limiters (111), switching (302) of the first distributor (110) of each spray section (106) and the second distributor (112) to the open position to achieve circulation of the processing fluid from the pump (104) to the tank or inlet (107) of the pump (104) through each spray section (106) without spraying through the spray nozzle/nozzles (109) of the spray sections (106). The spraying method (500) using the above-described spray system (100) includes the filling step (300), including the sub-steps of setting (301) the first value (V1) of the threshold pressure to the threshold pressure (Ps) of the pressure regulator (105), switching (302) of the first distributor (110) of each spray section (106) and the second distributor (112) to the open position to achieve circulation of the processing fluid from the pump (104) to the reservoir (103) or inlet (107) of the pump (104) through each spray section (106) without spraying through the spray nozzle/nozzles (109) of the spray sections (106).

EFFECT: creation of an agricultural spray system is provided, in which the spray sections equipped with spray nozzles for the processing liquid can be filled without spraying any processing liquid.

11 cl, 5 dwg