Assembly for subsurface irrigation

 

(57) Abstract:

Usage: in the agricultural industry, in particular in aggregates for sub-surface irrigation or injection of solutions of fertilizers, herbicides. The inventive Assembly includes a self-propelled cart 1 with the working bodies for the introduction of liquids into the soil, the tank 6 with the centrifugal pump 7 for supplying water and aqueous solutions of fertilizers in the channels of the working bodies, plunger pump 9 with a non-return valve 8 on the suction and discharge lines. While the discharge nozzle of the pump 7 is connected through the valve 8 to the discharge connection of the pump 9 and with its suction inlet. The combined system connecting the pump provides both continuous and intermittent flow of fluid in the root layer of soil. 5 Il.

The invention relates to the mechanization of agricultural production, and is intended for subsurface injection through the nozzle of the water, solutions of fertilizers, herbicides and similar substances to increase yields, reduce water consumption for irrigation, improving the uniformity of irrigation of soils with elevated slopes, conservation of soil fertility and simplify techniqueskaley it pokorivshij legs with piping the outlet ends of which are located in podkapova space and facing to the rear edges ploskorezy paws, the discharge ends of the pipes are made with longitudinal channels, cross-sections which are shaped elements connected between elliptic curves, the width of the channel gradually increases toward the rear edge ploskorezy paws with a gradually decreasing height.

The disadvantage of this unit is the limited distribution of irrigation water or liquid fertilizer, distributed only in the furrows created ploskoreznyh paws, and not distributed in the root layer of soil.

The closest in technical essence and the achieved result to declare is the unit for sub-surface irrigation, including self-propelled truck with working bodies to make water or aqueous solutions of fertilizers in the soil in the form of racks pokorivshij paws and channels, pinned in front of the blades perpendicular to the soles ploskorezy legs on the self-propelled truck mounted tank, centrifugal pump for water or aqueous solutions of fertilizers in the channels of the working bodies, globe and check valves on the line under the program when applying to the soil.

A disadvantage of the known Assembly is that it provides water solutions in the plowed part of the soil and cannot ensure the supply of water and aqueous solutions of fertilizers in fallow soil that does not provide an effective and economic subsoil irrigation.

The purpose of the invention increase the efficiency and effectiveness of subsoil irrigation of pastures and no-till plowing.

This objective is achieved in that the unit for sub-surface irrigation, including self-propelled truck with working bodies to make water or aqueous solutions of fertilizers in the soil in the form of racks pokorivshij paws and channels, pinned in front of the blades perpendicular to the sole ploskorezy legs on the self-propelled truck mounted tank, centrifugal pump for water supply and water tanks fertilizers in the channels of the working bodies, provided with a plunger pump, with discharge of the centrifugal pump is connected through a check valve to the discharge pipe of a plunger pump and suction pipe of a plunger pump, the connecting channels are connected to the nozzles, axis which is directed in both directions in the horizontal plane of the cut a-a in Fig. 1; Fig. 3 cross-section B-B in Fig. 1; Fig. 4 section b-b of Fig. 1; Fig. 5, the flow pattern of water and aqueous solutions unit for subsurface irrigation.

Assembly for subsurface irrigation contains a self-propelled cart 1 with the working bodies in the form of a knife-like struts 2 with ploskoreznyh lamps 3, positioned across the longitudinal axis of the self-propelled truck 1, the connecting channels 4 working bodies connected to the nozzle 5 is directed horizontally in both directions across the direction of movement of the truck 1, the tank 6 for water or aqueous solutions of fertilizers, centrifugal pump 7 for supplying water and aqueous solutions from the reservoir 6 into the channels 4 of the working bodies through the check valve 8 and into the pump suction plunger pump 9, moreover, the discharge of the centrifugal pump 7 is connected to the discharge nozzle plunger pump through a return channel 8, ensuring the passage of fluid from the discharge of the centrifugal pump 7 in the discharge line of a plunger pump 9, and does not allow the passage of fluid from the discharge plunger pump 9 in the discharge line of a centrifugal pump 7. The combined system connection cent the whist the flow of the liquid in the root layer through solid layers of virgin soil.

Assembly for subsurface irrigation works in the following way.

Self-propelled trolley 1 with the tank 6 is filled with water or aqueous solutions of fertilizers, is displayed on the sub-surface irrigation, with the help of hydraulic cylinder working bodies in the form of a knife-like struts 2 with ploskoreznyh legs 3, the connecting channels 4 and nozzles 5 descend and penetrate into the soil at the level pokoordinatnogo layer of plants and enables direct transmission of drive self-propelled truck 1, 7 centrifugal and plunger 9 pumps water or aqueous solutions of fertilizer from the tank 6 through the connecting channels 4 through a nozzle 5 in a horizontal plane in the root layer of plants, when this pulse occurs, fluid flow through the nozzle 5 in a horizontal plane on either side of ploskoreznyh legs 3, the pulsed fluid supply plunger pump 9, the liquid is able to penetrate through the layer of hard soil and loosen it, facilitating the penetration of the liquid in the supply centrifugal pump at lower pressure, as when the joint operation of centrifugal and plunger pumps for a combined scheme in the period of supply plunger pump 9 is provided by the high pulse is performance and low pressure drop, which gives a periodically high differential pressure for loosening hard soil and high performance for the fluid in the root layer. As can be seen from the diagram of the centrifugal pump 7 continuously supplies fluid from the reservoir 6 into the suction pipe of a plunger pump 9 during the suction piston pump 9. At the same time the centrifugal pump 7 delivers fluid from the reservoir 6 in the connecting channels 4 and further to the nozzle 5 through the check valve 8, which is opened only when the piston pump 9 will make the period of suction, as in the period of the discharge plunger pump 9 non-return valve 8 is closed because the pressure plunger pump 9 is much greater than the pressure created by the centrifugal pump 7. During the discharge plunger pump 9 non-return valve 8 will be closed and fluid will be supplied to the piston pump 9 in the nozzle 5, and the flow of the centrifugal pump 7 will be zero. Thus, the operation of centrifugal 7 and plunger, 9 pumps according to the proposed scheme provides intermittent pulsed flow of liquid into the soil with a variable pressure and variable productivity, which creates conditions of obrazovanie areas of solid ground. Combined scheme of work 7 centrifugal and plunger, 9 pumps is characterized by a pulsed supply with a sharp drop in pressure and the change in performance that is favorable parameters for the economic and efficient sub-surface irrigation, as the liquid is almost misses on the soil surface, which determines the economical use of water.

Depending on the specific conditions, the unit can operate in continuous motion at different speeds, and with periodic stops for sub-surface irrigation with a particularly solid ground.

Assembly for subsurface irrigation can be used for irrigation of pastures, as well as in subsurface soil or soil with a high slope.

Technical advantages of the proposed unit for subsurface irrigation in comparison with the prototype are the simplicity of construction of the elements of the unit using the original connection diagrams centrifugal and plunger pumps, providing a pulsed flow of fluid in wide ranges of pressure and flow rate in the root layer of plants.

Obshestvennost compared with the prototype, are in the subsoil irrigation without mechanical stirring method using a pulse input of a thin jet into the soil and penetrating and destructive action of the jet under the action of hydraulic shock.

The expected economic effect of the proposed use of the unit for subsurface irrigation in comparison with the prototype can be provided by ensuring that only subsurface irrigation no flow of water or liquid fertilizer on the soil surface, by reducing energy costs while providing irrigation scheme with centrifugal and plunger pumps, due to the effective and uniform sub-surface irrigation of root layer and by eliminating the energy costs of plowing and loosening of the soil and higher yields as a result of subsoil irrigation.

Implementation of the proposed unit for sub-surface irrigation is planned in 1993-1995, arid foothill farms of Krasnodar Krai on the basis of technological and technical-economic calculations performed in the laboratory of the processes and apparatuses of chemical technology Department TOPP Krasnodar Polytechnic Institute and coordination and the shooting with the working bodies for introducing liquid into the soil in the form of racks pokorivshij paws and channels and hinged at the front perpendicular to the soles of the paws knives, a tank and a centrifugal pump for feeding the liquid into the channels of the uprights of the working bodies, characterized in that the unit is equipped with a plunger pump, connected in series in parallel with the centrifugal pump so that the discharge line of a centrifugal pump connected to the suction and discharge nozzles of a plunger pump, the latter through the check valve.

 

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