RU2582346C2 - Device for application of liquid agrochemicals - Google Patents

Abstract

FIELD: agriculture; machine building.

SUBSTANCE: invention relates to agricultural machine building, in particular to devices for local subsurface and surface application of liquid agrochemicals installed on different field units. Device frame is equipped with vessel for liquid agricultural chemical, guide, air pump driven by tractor PTO, interconnected by pneumatic drives receiver with pressure regulator, as well as step motor. Receiver is connected by air duct with reservoir for agrochemicals. Guide has nozzles with valves, rigidly fixed actuating device and is connected to the step motor. Actuating device is connected through a pressure sensor both with a liquid agricultural chemical vessel and output of the control unit inputs of which receive signal from the unit speed sensor and signal from GPS receiver. Actuating device is connected to vessel for liquid agrochemicals through valve, and the valve is connected through a step motor with control unit output.

EFFECT: such design solution is aimed at improving control accuracy of dose introduced liquid agrochemicals on a specific area of treated field and quality of control dose introduced liquid agrochemicals.

1 cl, 1 dwg

Description

The device relates to agricultural chemicalization machines, and in particular to devices for local subsoil and surface introduction of liquid agrochemicals installed on various field units.

A device is known for gravitational introduction of liquid chemicals (author's certificate 335156, class А01С 23/02, F04F 10/02 1987), consisting of a carrier 1 frame on which a tank for a liquid chemicalization agent is mounted, equipped with an equalizing pipe installed inside the tank and serving to ensure a constant pressure of the liquid, which is independent of the change in the column of liquid in the tank.

The disadvantages of this device

1. This device does not have any adjustments. The flow rate of the working fluid can only be changed when the speed of the unit changes, and the following disadvantage follows.

2. To obtain a constant flow rate of the working fluid, a constant speed of the unit is necessary, which is almost impossible to do, therefore, fluctuations in the flow rate of the working fluid in the course of the movement of the unit are inevitable, which leads to an uneven dose of application.

A device is known for local subsoil and surface application of liquid mineral fertilizers and other means of chemicalization (copyright certificate 1804297, class А01С 23/02, А01М 7/00 1993), containing the capacity of the working fluid and a hydraulic manifold with a distributor in the form of a pressure pipe including bends, equipped with dispensers. The taps are grouped, and the dispensers of each group of taps are made in the form of a cylindrical hollow pipe hermetically connected to the ends of the taps, in which an additional rotating shaft is placed, having a drive from the wheel of the field unit. In this case, the dispenser tube with respect to the bends has passage windows, and the shaft has through metering channels blocked by movably installed elements, for example, in the form of pistons. In addition, the passage through the windows of the dispenser pipe from the side opposite the taps are equipped with distributing flexible pipes.

The disadvantages of this device

1. The inability to change the dose during application of the unit, if required by agrotechnical requirements.

2. The inability to change the dose of application separately for each nozzle, if required by agrotechnological requirements.

A device is known for subsoil liquid fertilizer and fertilizer application (copyright certificate 1776363, class АСС 23/02, 1992), including a number of nozzles with valves, each of which is connected to the discharge line of the pump, as well as to the injection frequency adjuster, made in the form of a profiled cam, kinematically connected to the support wheel of the unit, equipped with a switch and a pulse shaper, the inputs of which are connected to the movable electrical contacts of the switch, kinematically connected to the cam, and the outputs to ektromagnitnym valve actuators nozzles.

The disadvantages of this device

1. The inability to change the dose during application of the unit, if required by agrotechnical requirements.

2. The inability to change the dose of application separately for each nozzle, if required by agricultural requirements.

The closest analogue to the claimed device is a device for subsoil liquid pesticides and fertilizers (US 5967066), including a frame on which is installed a guide with a number of nozzles with valves and with an actuator rigidly fixed to it, connected through a pressure sensor as a liquid agrochemical tank , and with the output of the control unit, the inputs of which are fed a signal from the speed sensor of the unit and a signal from the GPS receiver.

The disadvantages of this device

1. Low accuracy of dose control of applied liquid agrochemicals.

2. Poor quality of dose adjustment of applied liquid agrochemicals.

The problem is solved due to the fact that the device for introducing liquid agrochemicals, including a frame on which a guide is installed with a number of nozzles with valves and with an actuator rigidly fixed to it, is connected through a pressure sensor with both the capacity of the liquid agrochemical and the output of the unit control, to the inputs of which a signal from the speed sensor of the unit and a signal from the GPS receiver are supplied, while it contains an air blower and a receiver with a pressure regulator mounted on the frame and driven from the tractor PTO, interconnected by pneumatic pipelines and a stepper motor, while the receiver is connected by a pneumatic piping to a tank for agrochemicals, the guide is connected to a stepper motor, and the actuator is connected through a valve to a tank for liquid agrochemicals, while the valve is also connected through a stepper motor to the output of the control unit.

New significant features

1. The device contains an air blower and a receiver with a pressure regulator mounted on the frame and driven from the tractor’s PTO, connected by pneumatic lines, and a stepper motor.

2. The receiver is connected by a pneumatic line to a tank for agrochemicals.

3. The guide is connected to the stepper motor, and the actuator through the valve is connected to the tank for liquid agrochemicals.

4. The valve is connected through a stepper motor to the output of the control unit.

The listed new essential features in conjunction with the known ones are necessary and sufficient in all cases to which the requested object of legal protection applies.

Identified distinguishing features in conjunction with the known provide a technical result.

The device allows to increase the accuracy of dose control of applied liquid agrochemicals to a specific area of the field being treated and the quality of dose control of applied liquid agrochemicals.

The drawing schematically shows a device for making liquid agrochemicals.

A device for introducing liquid agrochemicals contains a frame 1 having a linkage 2 for connection with a tractor 3 using a three-point mounted mechanism 4, on which a tank 5 with liquid agrochemical is installed, an air blower (compressor) 6, a receiver 7 with a pressure regulator 8, which are interconnected connected by pneumatic conduits 9, the actuator 11. The guide 10 is connected to the stepper motor 12 through the transmission 13. The capacity 5 of the feed tubes 14 is connected to the valve 15, which is connected by a flexible hose 16 to the actuator 11, Making a, for example, in the form of moving the head to the spindle. At the bottom of the frame 1, cone-shaped feeders 17 are fixed along the guide 10 with nozzles with valves 18 installed at their ends. The output of the control unit 19 is connected to the speed sensor 20. The tractor has a power take-off shaft 21 and cardan drive 22.

A tractor 3 with a machine attached to it moves across the field, rotation from the power take-off shaft 21 of the tractor 3 is transmitted to the air blower 6, the drive of which is carried out from the power take-off shaft 21 of the tractor 3 through the cardan gear 22, air from the air blower 6 through the receiver 7 comes under pressure into the tank with agrochemical 5 through the pneumatic piping 9. The agrochemical from the tank 5 under pressure passes through the feed tubes 14 to the valve 15, and from it through a flexible hose 16 to the actuator 11. The actuator and valve synchronized by the control unit 19, the input of which is connected to the speed sensor 20 of the tractor 3, and the second input is connected to a GPS receiver (not shown). Dose differentiation is carried out in accordance with the electronic map of the introduction of agrochemicals. When the actuator 11 passes by the cone-shaped feeders 17, the valve 15 opens for a certain time, depending on the set dose (norm) of the introduction of the agrochemical.

Claims (1)

A device for introducing liquid agrochemicals, including a frame on which a guide is mounted with a series of nozzles with valves and with an actuator fixed to it, connected via a pressure sensor to both the capacity of the liquid agrochemical and to the output of the control unit, to the inputs of which a signal is supplied from the sensor unit speeds and a GPS receiver signal, characterized in that it contains an air blower and a receiver with a pressure regulator mounted on the frame and driven from the tractor’s PTO, connected to each other by pneumatic pipes, and a stepper motor, wherein the receiver is connected by a pneumatic line to a tank for agrochemicals, the guide is connected to a stepper motor, and the actuator is connected through a valve to a tank for liquid agrochemicals, and the valve is also connected through a stepper motor to the output of the control unit.

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