Patent ID: 6698367
Filing Date: 2004-03-02
Classification: A01M

Abstract:
Device for diffusing in soil two at least two inter-reactive products for application by fumigation, including a frame (14) designed to be connected to a three-point linkage (12) of a tractor, characterised in that the device includes, installed on the frame (14), two compartments (40, 42) for storing the inter-reactive products, pumping means (22) for pumping said products contained in the compartments (40, 42), supply circuits (48, 50) in which are disposed the pumping means (22) and which connect the compartments (40, 42) to a supply member (82) having at least two inputs and one output, a tube (76) borne by at least one coulter (68) including subsoil ploughing wings (72) at a lower end of the coulter (68), the tube (76) being connected to the output of the supply member (82) to diffuse in the soil; when the coulter is introduced into the soil, a gas stream resulting from a reaction of the inter-reactive products, a free running wheel (36) in contact with the soil and which drives a driving means (56) for actuating the pumping means when the free running wheel (36) is driven in rotation, and a roller (88) for compacting the soil and setting a furrow produced by the coulter (68) as the tractor moves, the roller being located rearwards of the coulter (68), a radar (2) for detecting a speed of advance of the tractor, a hydraulic circuit having an oil tank (5), at least one hydraulic circuit pump (1), two hydraulic motors (4) for driving the pumping means (22) and two proportional valves (3) to supply the hydraulic motors; sensors (7) associated with the pumping means for detecting delivery rates of the pumping means; and a computer (6) to which the radar (2) and the delivery rate sensors (7) are coupled, and which is design to drive the proportional valves (3) according to the signals received from said radar and said sensor to determine quantities of inter-reactive products to be delivered by the pumping means (22) to the diffusion means (24).