RU2123390C1 - Electric-corona separator - Google Patents

Abstract

FIELD: seed sorting in electric field. SUBSTANCE: electric-corona separator includes hopper, apparatus for forming flow of particles, corona electrode in the form of shaft carrying corona electrodes mounted onto it in staggered fashion and corona-free electrode. Separator also includes compressor for creating air flow. Shaft has in its walls curvilinear ducts connected with compressor. Corona electrodes are in the form of wedges mounted on shaft. Corona-free electrode is in the form of set of plates with guiding beads. EFFECT: improved design. 2 cl, 1 dwg

Description

 The invention relates to techniques for the separation of bulk materials by an electric field and can be used in agriculture.

 Known electric corona separator (AS USSR N180571, class 1/12 1/00, 1966), comprising a housing, a feeding device, a feeder drum, a feeder tray, corona, deflecting, settling electrodes and receivers.

 A disadvantage of the known electric separator is the low quality of cleaning and separation of the separated materials.

 Known electric separator (AS USSR N 97781, class B 03 C 1/24, 1952) containing a hopper, three electrodes in the form of segments, a cylinder formed by electrodes, a rectifier and funnels for separated particles.

 A disadvantage of the known electric separator is the low quality of cleaning and separation of the separated materials.

 The closest in technical essence and in the achieved result is an electric separator (AS USSR N 822898, class B 03 C 7/02, 7/12, 1980) containing a feed hopper, a system of electrodes with a rotating corona discharge electric field and receivers for separated materials.

 A disadvantage of the known device is the lack of clarity of separation of the separated materials.

 The aim of the invention is to increase the clarity of separation of bulk materials by exposing them to a simultaneously rotating electric field of a corona discharge and a rotating air stream.

 This goal is achieved by the fact that in the known electro-corona separator containing a hopper, a device for forming a stream of incident particles, a corona electrode made in the form of a shaft with corona elements mounted on it in a checkerboard pattern, and a non-corona electrode mounted coaxially with the corona element, it is equipped with a compressor to create an air flow, curvilinear channels are made in the walls of the shaft, which are in communication with the compressor, the corona elements are made in the form of wedges mounted on the shaft, and The casing electrode is made in the form of a package of annular plates with a guide flange.

 Distinctive features of the proposed device from the prototype is that the working body consists of corona electrodes in the form of a wedge, mounted on a shaft with channels of curved shape for air flow output, and from a non-corona electrode in the form of a package of ring plates with a guiding flange.

 The proposed device meets the criterion of "significant differences", since no other known technical solutions with similar features have been detected.

 Figure 1.2 shows the electrocorona separator.

 The separator consists of corona electrodes 1 in the form of a wedge on the shaft 2 with channels 3 of a curved shape for airflow and a non-corona electrode 4 in the form of a package of ring plates with a guide flange 5, mounted on the housing 6 in the form of a hollow cylinder of electromagnetic vibrators 7 to clean the housing from dust, a device 8 for forming a flow of falling particles in the form of a hollow cylinder, a feeding hopper 9, an electric motor 10 for rotating the shaft 2, a compressor 11 for creating an air flow, receivers 12 for separated mat TV series and from dust.

 The device operates as follows.

 Bulk material from the hopper 9 through the device 8 enters the interelectrode space of the electric separator.

 Particles entering the interelectrode space are affected by a simultaneously rotating corona electric field and rotating air currents obtained by rotating inside non-corona electrodes 4 of shaft 2 with corona electrodes 1 and with channels 3 of a curved shape to exit the air stream using an electric motor 10.

 Particles, being carried away by the rotating electric field of the corona discharge and the rotating air currents, depending on the electrophysical properties, geometric dimensions, mass and windage, have different trajectories and fall into different cells of the receiver 12. Particles with high windage and dust are carried outside the non-corona electrodes 4 through the flanging guides 5, fall into cell IV, large ones into cell I, medium ones into cell II, and small ones into cell III of receivers 12.

 Example. In laboratory conditions, seeds with light impurities and moisture content of 8.3% were separated. The applied rectified voltage is 20 kV, the number of revolutions of the working body is 69 rpm, the air flow rate is 0.5 m / s.

 The technical and economic advantage of the proposed invention in comparison with the prototype is to increase the clarity of separation of the separated particles by simultaneously exposing them to a rotating electric field of a corona discharge and a rotating air stream.

Claims (2)

 1. An electrocorona separator comprising a hopper, a device for forming a stream of falling particles, a corona electrode made in the form of a shaft with corona elements mounted on it in a checkerboard pattern and a non-corona electrode mounted coaxially with the corona electrode, characterized in that, in order to increase the efficiency of the process separation, the electronic separator is equipped with a compressor for creating an air flow, channels of a curved shape are made in the shaft walls, which are in communication with the compressor, corona element s are made in the form of wedges mounted on the shaft, and the non-corona electrode is made in the form of a package of ring plates.  2. The separator according to claim 1, characterized in that the annular plate with a guide flanging.

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