FIELD: agriculture.
SUBSTANCE: invention relates to agriculture, in particular to devices for application of fertilisers and chemicals with irrigation water. The device comprises a pressure pipeline, a container for liquid fertiliser, a dosing pump. The pump has working cavities with a piston kinetically connected to the hydraulic motor, corresponded through the drain line, a distributor and connecting fittings. The end of the pressure pipeline is provided with a nozzle made with the vacuum chamber. Inside the chamber the ejector unit is located, mounted inside along the width of its horizontal membrane with the opening in the form of a "П"-shaped screen at a height from the bottom of the chamber and rigidly attached at the base of the front part of the ejector, and ends with the nozzle in the direction of the annular socket. The radius of the inlet of combining tube crown forms an annular gap between the walls of the ejector and the chamber in the direction of the nozzle of the ejector. The feeding tubes are connected to the pressure cylinder. The bottom of the chamber is connected to the supply and discarding tubes. The outlet of the ejector nozzle is located in the cavity of the annular socket of the combining tube. The chamber comprises an ejector unit, feeding tubes and the nozzle in the direction of the annular socket. The ejector unit is equipped with an adjusting needle. The needle is mounted in the cavity with the ability of axial movement in the plane towards the axis of the booster tube. Movement is carried out by means of the guide rod in the form of a screw. The screw is fixed to the ejector crossbars. The other end of the rod is mounted in the side wall of the pressure pipeline.
EFFECT: usage of this device enables to improve the efficiency of mixing liquid fertilisers, increases reliability of work, and also adjusts the consumption of fertilisers.
4 cl, 12 dwg
