RU2804306C1 - Mobile installation for preparing tank mixture - Google Patents

Abstract

FIELD: agricultural engineering.

SUBSTANCE: invention can be used for mixing compounds in specified concentrations to prepare a tank mixture used as a means of protecting agricultural plants. A mobile plant for preparing a tank mixture contains compound dosing lines, a water dosing line, a dosing line adder, a mixing device, and an electronic control unit. For each compound, a separate dosing line is used, controlled by an automatic control system. The mixing device, in which the compounds are mixed with water, is made in the form of a Venturi tube to ensure the supply of compounds to the mixer due to the resulting vacuum.

EFFECT: improved homogeneity and quality of the finished mixture.

1 cl, 1 dwg

Description

A mobile installation for preparing a tank mixture refers to agricultural equipment designed for mixing drugs in specified concentrations to prepare a tank mixture used as a means of protecting agricultural plants.

A mixing and dosing device is known [Patent RU30100U1 according to IPC B05C 5/00. - Publ. 06/20/2003] for the manufacture of products from multicomponent polymers, containing working tanks for liquid components, dosing pumps according to the number of components with a common or separate drive, a mixing head connected by means of a connecting device to the volume to be filled, and the dosing pumps are connected to the working tanks by recirculation lines , equipped with adjustable throttles, and the dosing pumps are connected to the mixing head by discharge lines equipped with flow meter throttles and differential pressure gauges.

The well-known utility model provides accurate dosing of components when preparing the mixture, however, it uses dosing pumps with high energy consumption. In addition, automation of the mixing process is achieved by complicating the design of the entire installation. The disadvantages of a mixing plant with volumetric control of components are the complexity of the design, high energy consumption and lack of mobility.

The objectives of the proposed invention are to automate the process of diluting drugs in precise concentrations and increase the homogeneity of the finished mixture with a mobile version of the installation.

The use of such a mixing plant makes it possible to reduce the participation of workers in the main technological process, as a result of which the degree of harmful effects of hazardous components of the mixture is reduced and possible operator error is eliminated. In addition, due to the method of mixing drugs used, the quality of the final product is improved and energy costs are reduced.

The technical result of the assigned tasks is achieved by the fact that the invention consists of several independent dosing lines 1, the operation algorithm of which is set in the control unit of the mixing unit 5. The tank mixture consists of water and substances (drugs) dissolved in it, measured by dosing lines. The drug dosing line 1 consists of a container for a concentrated substance 6, an electromagnetic valve 8, an electronic liquid volume flow sensor 9 and an electronic control unit for the dosing line 12. To prevent drugs from getting from one dosing line to another, check valves 10 are installed at the output of each line. The outputs of all drug dosing lines are combined on a summing device 3, after which the drugs are supplied to a mixing device 4, which is made in the form of a Venturi tube. The vacuum generated on the Venturi tube allows the dosing lines to operate without additional feed pumps. From an external water source, which is not part of this invention, water is supplied to the water dosing line using a motor pump. The amount of supplied water is measured using the water dosing line 2, which includes an electromagnetic valve 15, an electronic volumetric water flow sensor 16 and an electronic control unit 13. The electronic devices included in the proposed invention consume little electricity, which allows it to be powered from an autonomous power source (battery or on-board network of agricultural machinery). The use of an autonomous power source (12 Volts) in combination with a water supply from a motor pump allows for the mobility of the installation. The main functional elements are shown in the diagram of the mixing plant (Figure 1).

The mobile installation for preparing a tank mixture works as follows: concentrated preparations are poured into separate containers 6. On the panel of the electronic control unit 12 of the corresponding dosing line, the required volume of the drug is set, which is measured by this dosing line. On the panel of the electronic unit 13 for controlling the water dosing line, the required volume is also set. Water from an external source, passing through a mechanical filter 14, is supplied to the mixing device and mixed with drugs supplied from the dosing lines. Having measured the required volume of the drug, the dosing line is turned off, after which the next dosing line is turned on. In this way, all components are sequentially introduced from the working dosing lines. The total time of drug administration should be less than the water supply time, which is achieved using an adjustable throttle device 11 at the outlet of each dosing line. Having measured the specified volume of water, the water dosing line closes. The output of this line goes to the mixing device 4, where water is mixed with the preparations and enters the working container. After filling the working container, which is not part of the invention, the tank mixture is ready for use. After completion of all work, unused drug residues are removed using drain valve 7 from each container.

Claims (1)

A mobile installation for preparing a tank mixture containing drug dosing lines, a water dosing line, a dosing line adder, a mixing device, an electronic control unit, characterized in that for each drug a separate dosing line is used, controlled by an automatic control system, and a mixing device in which the drugs are mixed with water, made in the form of a Venturi tube, which ensures the supply of drugs to the mixer due to the resulting vacuum.