RU2448450C2 - Plant for fertiliser input into irrigative net - Google Patents

Abstract

FIELD: agriculture.

SUBSTANCE: device for supply fertilisers in the irrigation system comprises a slurry duct with a manometre, an ejector, a check valve, a pump with a suction pipe for supply of clean water, a mixing unit and a gate valve. The check valve is placed in front of the ejector. In front of the check valve there is a pipe inserted to feed liquid compound fertilisers in the annular gap of the slurry duct. The pressure pipeline of the pump is connected with the ejector through the pipeline for feeding a working fluid. The manometre and the gate valve are installed on the slurry duct after the ejector.

EFFECT: invention is characterised by simplicity in operation and enables to automate the process of feeding with the desired concentration of entire composite of fertilisers, as well to provide an ability for flushing the pump, the pressure pipeline and sprinkler equipment.

1 dwg

Description

The invention relates to the field of agriculture, and in particular to devices using the effluent of livestock complexes for irrigation of crops on irrigated lands, and is intended to automate the process of simultaneous mixing and feeding a mixture of livestock effluents, liquid mineral fertilizers and water into the irrigation network.

Known devices and installations for supplying solutions with irrigation water, including a container for solutions, a mixing body and metering devices (AS USSR 1316582, class A01C 23/00, 1987; AS USSR No. 1360622, class A01C 23 / 04, 1987), the disadvantages of these devices in the complexity of operation.

The closest is a system for the preparation and supply of livestock waste to the irrigation network (AS USSR No. 1113022, class A01C 23/00, 1984), consisting of a stock of livestock waste and a clean water tank and including a pumping station for irrigation water and prepared livestock drains into the irrigation network.

The disadvantage of this system is the need for compulsory excess of the level of livestock runoff over the level of irrigation water, the impossibility of accurate dosing, operational difficulties in changing the concentration in the mixing unit.

The technical result achieved by this invention is the automation of the process, the ability to supply with the desired concentration of the entire complex of fertilizers, the ability to flush the pump, pressure pipe and sprinkling equipment, ease of operation.

This technical result is achieved by the fact that the installation for supplying fertilizers to the irrigation network, including a slurry line, a pipeline for supplying liquid complex fertilizers, a pipeline for clean water, a mixing unit, an ejector, a pipeline for supplying a mixture of effluents and liquid complex fertilizers. A pressure gauge and a gate valve after the ejector are installed on the pipeline for supplying effluents and liquid complex fertilizers, a check valve is installed in front of the ejector, an additional resistance (check valve) is installed on the pipeline for supplying liquid complex fertilizers in the plane of the pipe end face for supplying liquid complex fertilizers.

Figure 1 shows a diagram of a plant for supplying fertilizer to the irrigation network.

The installation consists of a centrifugal pump 1 with a suction pipe for supplying water 2, a pressure pipe 3, a pipe 4 for supplying a working fluid to the ejector 5, a valve 6, a check valve 7, a pressure gauge 8, a slurry pipe 9, a liquid complex fertilizer 10 supply pipe with a check valve 11, a narrowed annular gap 12 in the trunk of the pipeline for supplying liquid complex fertilizers introduced into the liquid pipe of the mixing unit 13.

The installation works as follows: the pump 1 is turned on when the valve is closed 6. Water through the pipe 2 through the pump 1 enters the network 3 and through the pipe 4 to the ejector 5. Due to the closed check valve 7, the pressure in the ejector is set equal to the pressure in the network.

If necessary, feed into the network with a certain flow rate of livestock effluent, a valve 6 opens and the characteristic pressure of the ejector 5 sets the necessary pressure according to a manometer 8 corresponding to a certain intake flow rate. The check valve 7 automatically opens due to the difference in resistance in the liquid conductor 9 and the pipeline 10 for supplying liquid complex fertilizers, only drains enter the ejector 5 (the resistance in the pipeline 10 for supplying liquid complex fertilizers is increased by installing a check valve 11).

If it is necessary to supply liquid complex fertilizers with a valve 6, the pressure decreases, controlled by a pressure gauge 8. The flow rate of suction drains increases, as a result of which the speed in the annular gap 12 increases, and therefore the pressure head increases, the energies are aligned in the alignment of the pipeline 10, the check valve 11 opens suction begins ejector liquid complex fertilizers.

Thus, with the existing dependence of the pressure gauge readings and the flow rate sucked by the ejector (ejector characteristics), it is possible to supply the entire complex of fertilizers to the irrigation network, dosing them in the required proportions using only one valve 6 and pressure gauge 8.

The advantages of the invention in comparison with the prototype are as follows: the system works regardless of the levels of livestock runoff and irrigation water; the possibility of accurate dosage; elimination of deficiency of mineral fertilizers; change in concentration in the mixing unit during operation; ease of operation.

Claims (1)

Installation for supplying fertilizers to the irrigation network, including a fluid line with a manometer, ejector and a check valve located in front of the ejector, a mixing unit, a pump with a suction pipe for supplying clean water and a valve, characterized in that a pipe for supplying liquid complex fertilizers is introduced in front of the check valve into the annular slit of the fluid pipe, and the pressure pipe of the pump is in communication with the ejector by means of a pipe for supplying working fluid, and the manometer and valve are installed on the fluid pipe after the ejectors ora.