RU2206192C1 - Apparatus for presowing treatment of seeds - Google Patents

Abstract

FIELD: agriculture. SUBSTANCE: apparatus has seed hopper and treatment chamber with inductor made in the form of stator of three-phase electric machine with two three- phase windings. Ferromagnetic cylinder is mounted inside stator. Apparatus is further provided with controllable rectifier connected to supply mains, filter condensator, transistor commutator, pulse distributor, pulse former, and setting generator. Three-phase windings of inductor are connected at one side in counter "star-like" arrangement and with positive terminals of controllable rectifier and filter condenser and are connected at other side through commutator transistors with negative terminal of controllable rectifier and filter condenser. Commutator transistor bases are connected with pulse distributor, which is connected through pulse former with setting generator. EFFECT: increased efficiency in treating seed by stabilized rotational frequency of electromagnetic field. 3 dwg

Description

 The invention relates to agriculture, and in particular to means of electrophysical effects on biological objects.

 A device for presowing treatment of seeds by and.with. 1091870, A 01 C 1/00, 1983. A known device for pre-sowing seed treatment includes a seed hopper and a treatment chamber with an inductor in the form of a stator of an electric three-phase current machine, inside which is coated concentrically with a gap forming a treatment chamber, coated with a diamagnetic sheath material ferromagnetic cylinder.

 The disadvantage of this device is the presence of an alternating magnetic field, which reduces the effectiveness of the impact.

 The closest in technical solution is a device for pre-sowing seed treatment (see patent RU 2137334, A 01 C 1/00, 1999), including a seed hopper and a treatment chamber in the form of a stator of an electric machine with two windings, a regulating device and a feed network.

 A disadvantage of the known device is that the pulsating magnetic field has a fixed rotation speed.

 The technical solution of the invention is to increase the impact efficiency for various seeds by optimizing the frequency of rotation of the electromagnetic field.

 This object is achieved in that the device for pre-sowing seed treatment, including a seed hopper and a treatment chamber with an inductor in the form of a stator of an electric three-phase current machine with two three-phase windings, inside which a ferromagnetic cylinder is installed, and the power supply network contains a controlled rectifier connected to the power supply network, filter capacitor, transistor switch, pulse distributor, pulse shaper and master oscillator, while three-phase windings on one side are turned on Of course, in the “star”, and with the positive terminals of the controlled rectifier and filter capacitor, on the other hand, through the transistors of the switch with the minus terminal of the controlled rectifier and filter capacitor, while the bases of the transistors of the switch are connected to a pulse distributor, which is connected through a pulse shaper to a master oscillator .

 The novelty of the claimed technical solution is due to the fact that a controlled rectifier, a filter capacitor, a transistor switch, a pulse distributor and a master oscillator are interconnected by functional connections introduced into the device for presowing seed treatment.

 According to the scientific, technical and patent literature, the authors are not aware of the claimed combination of features aimed at achieving the task, and this solution does not follow clearly from the prior art, which allows us to conclude that the solution corresponds to the level of the invention.

 The invention is illustrated by drawings. Figure 1 shows a device for presowing treatment of seeds, section; figure 2 is a section aa, figure 3 is a connection diagram of the device with the network.

 The device consists of a hopper 1 for loading seeds, a housing 2, an inductor 3, with windings 4 and 5, a ferromagnetic cylinder 6, an outlet pipe 7, a processing chamber 8, a controlled rectifier 9, a filter capacitor 10, a transistor switch 11, a pulse distributor 12, a shaper pulses 13, the master oscillator 14, the fixing racks 15.

 The processing chamber 8 is limited by the hopper 1, the inductor 3, the ferromagnetic cylinder 6 and the outlet pipe 7. The ferromagnetic cylinder 6 is fixed in the inductor 3 using racks 15. The windings 4 and 5 are placed in the same grooves of the inductor. Case 2 is made of non-magnetic material or plastic.

A device for presowing seed treatment works as follows. The network A, B, C is turned on. The controlled rectifier 9 converts the alternating voltage into a pulsating constant, which is filtered by a capacitor 10 and fed to the windings 4, 5 and the transistor switch 11. The pulse generator is set by the pulse generator 14 depending on the material being processed. These pulses are fed to a pulse shaper 13, where pulses of a certain duration are formed, which are fed to a pulse distributor 12. The latter sends control signals to the bases of transistors 11, the transistors open one by one, and a pulsating current passes in windings 4, 5, and an electromagnetic rotating field is created. which is directed perpendicular to the movement of the processed material. Windings 4 and 5 (as in an induction motor) are located at an angle of 120 ^o . The transistor switch 11 and the windings 4 and 5 create a unidirectional rotating magnetic field directed perpendicular to the ferromagnetic cylinder 6. The speed of rotation of the field is determined by the parameters of the master oscillator and the design of the windings.

где f - частота задающего генератора;
р=1,2,3, ..., n - число пар полюсов у обмоток.

where f is the frequency of the master oscillator;
p = 1,2,3, ..., n is the number of pole pairs at the windings.

For example, at p = 1 and a generator frequency of 200 Hz, the field rotation speed is 12000 min ^-1 or 1256.6 s ^-1 .

 Seeds through the hopper 1 enter the processing chamber 8 and through the outlet pipe 7 in the storage. When moving between the inductor 3 and the ferromagnetic cylinder 6, a unidirectional rotating magnetic field acts on the seeds. Moreover, the field rotation speed is an order of magnitude higher than the movement of the processed material, which increases efficiency.

 Depending on the parameters of the treated seeds, the controlled voltage rectifier 9 sets the required voltage, which changes the current in the windings 4 and 5 and, accordingly, the magnitude of the electromagnetic field, and the frequency of rotation of this field is controlled by the master generator 14.

 The proposed solution is industrially applicable. The device for presowing seed treatment tested in laboratory and industrial conditions.

Claims (1)

 A device for pre-sowing seed treatment, comprising a seed hopper and a treatment chamber with an inductor in the form of a stator of an electric three-phase current machine with two three-phase windings, inside which a ferromagnetic cylinder is installed, and a power network, characterized in that it contains a controlled rectifier connected to the power network, a filter capacitor, a transistor switch, a pulse distributor, a pulse shaper and a master oscillator, while the three-phase windings are connected on the one hand in the opposite direction, in the “star”, and the positive terminals of the controlled rectifier and filter capacitor, on the other hand, through the transistors of the switch with the negative terminal of the controlled rectifier and filter capacitor, while the bases of the transistors of the switch are connected to the pulse distributor, which is connected to the master oscillator through the pulse former.

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