SU1727631A1 - Mixer-distributor for liquid fertilizer and gases - Google Patents

Abstract

The invention relates to agriculture and can be used on feeders for spreading liquid complex fertilizers, microelements or chemical precursors mixed with gases into the soil. The purpose of the invention is to improve the quality of work by improving the uneven distribution of the gas-liquid mixture in the outlet nozzles. The mixer-distributor of liquid fertilizers and gas has a cylindrical chamber with a bottom in the form of a truncated cone, at which the apex passes into a vertical hollow rod extending beyond the plates of the flow divider. In the protruding portion of the hollow rod, there are outlet openings located along its perimeter and representing a generally liquid nozzle. 2 Il.

Description

AND

The invention relates to agriculture and can be used on feeders to apply liquid complex fertilizers to the soil, as well as liquid trace elements and chemical chemicals mixed with gases.

A device used in a unit for introducing into the soil a mixture of nutrient solutions with gases, comprising a mixing and distributing chamber of confusing-diffuser type with liquid and gas nozzles, a liquid nozzle with radial holes, installed at the center of the mixing chamber, output nozzles located tangentially to the bottom surface of the mixing chamber.

The disadvantages of the known device are the increased energy consumption for the creation of a gas-liquid mixture, characteristic of flows with a centrifugal twist,

and the lack of uniform distribution of nutrients in the mixture, due to the fact that the mixture is formed from two gas streams supplied by two tangential gas pipes to the mixing and distribution chamber.

Tangential gas supply to the mixing chamber is characterized, as is well known, by the uneven distribution of gas velocities and dynamic pressures over the cross section. This leads to an uneven distribution of the two-phase mixture in the mixing chamber, for leveling which requires a significant length of the mixing path of the components. In addition, the presence of two supply gas channels requires very careful adjustment of the resistance of each of them, and the mixing chamber with two tangential channels is difficult to manufacture and the material is wired.

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Also known is a mixer-distributor of liquid fertilizers in the form of a gas-liquid mixture, which includes a cylindrical mixing and distribution chamber, equipped with an air laminarizer, a liquid laminarizer-dispenser and a flow divider made in the form of radially arranged cores at both ends, section equal compartments, the number of which is equal to the number of outlet nozzles, the air laminariser and the liquid laminariser dosing units enes on the ends of radially-lying plates and rigidly formed of concentric circular rings, separating the mixer-distributor section tion chamber at the point of installation of equal area,

A disadvantage of the known mixer-distributor of liquid fertilizers in the form of a gas-liquid mixture is that liquid accumulates in the lower diffuser and when the fertilizer unit is tilted on uneven floors, during operation there is an excessive supply of working fluid to the outlet fittings that turned out to be lower than other fittings, which leads to periodic uneven distribution of the gas-liquid mixture through the feed tubes of the working bodies.

The purpose of the invention is to improve the quality of work by increasing the uniformity of the distribution of the liquid-air mixture in the outlet fittings.

This goal is achieved by the fact that in the mixer-distributor of liquid fertilizers and gas in the central pointed rod there is an internal cavity connected to the liquid supply nozzle and outlet openings located along the perimeter above the radial plates while the rod is connected to the bottom of the mixing chamber having the shape of a truncated - cone.

FIG. 1 shows a mixer-distributor of liquid fertilizers and gas, a longitudinal section; in fig. 2 shows section A-A in FIG. one.

The liquid fertilizer and gas distribution mixer consists of a gas (air) supply pipe 1, which passes into the diffuser 2, a cylindrical mixing and distribution chamber 3, the bottom of which is made in the form of a truncated cone 4, and at an equal distance from each other the holes around the outlet nozzles 5, the nozzle 6 for the supply of liquid fertilizer are arranged around the circle. In the mixing and distribution chamber 3, a flow divider is installed, made of a central hollow rod connected to the nozzle 6, to which radially arranged plates 7 are rigidly fixed, dividing the chamber 3 into compartments that are strictly equal in cross-sectional area. At the upper end of the plates 7 a laminariser is installed, made of concentrically arranged rings 8, dividing the compartments into equal areas. On the vertical hollow rod, outlet openings 9 are made, which are located along the perimeter above the radial plates 7. At the upper end of the hollow rod, there is a conical plug 10.

Mixer-distributor works as follows.

During operation of the mixer, gas (air) enters through the nozzle 1 into the mixing and distribution chamber 3. Liquid fertilizer enters through the nozzle 6 into the hollow rod and is injected through the outlet openings 9 into the diffuser 2 above the mixing and distribution chamber plates 7 divider flows. The injected fluid is picked up by the gas (air) flow, in the form of a gas-liquid mixture is evenly distributed over the radially located compartments and along the truncated cone 4 is sent to the outlet nozzles 5, and then through the flexible sleeves enters the feeding tubes of the working bodies of the fertilizer liquid fertilizer and injected into the soil .

Claims (1)

Invention Formula Mixer-distributor of liquid fertilizer and gas, containing a cylindrical mixing chamber, to which are connected coaxial nozzles for supplying liquid and gas and evenly spaced obliquely along its perimeter to the vertical axis, output connectors installed in the mixing chamber a flow divider having rigidly connected with a central pointed rod radial plates dividing the cross section of the mixing chamber into sectors located above the inlet openings of the outlet nozzles and attached to the plates of concentrators -rings, characterized in that, in order to increase performance by increasing the uniformity of distribution of the gas-liquid mixture outlet fitting, in a central spike formed inner cavity communicating with the liquid supply pipe and outlet openings, located along its perimeter above the radial plates, while the rod connected to the bottom of the mixing chamber, having the shape of a truncated cone. Phie.1