RU194044U1 - SUSPENDED ELECTROMAGNETIC IRON SEPARATOR - Google Patents

Abstract

The utility model relates to the separation of materials by magnetic properties and can be used in the metallurgical and mining industries. The technical result of the utility model is to reduce the metal consumption and cost of the product by reducing the heating of the coils. Position 1 denotes a magnetic circuit acting as a housing with a developed ribbed surface; position 2 - excitation coil; position 3 - protective armor plate made of non-magnetic material; position 4 - expansion tank; positions 5, 6 - oil pipelines; position 7 - filler neck with cork; position 8 - drain neck with cork; position 9 - an air dryer, the role of which can be performed by silica gel; position 10 - coolant (transformer oil); positions 11, 12, 13, 14 - fixing eyes; position 15 is the oil level indicator, position 16 is the terminal box. The proposed suspended electromagnetic iron separator operates as follows. The iron separator clings to the mounting eyes 11, 12, 13, 14 to a load-moving device, such as a cargo crane or a beam crane, rises up and moves to the loading point. At the loading point, the iron separator is lowered, winding 2 (excitation coil) is turned on, supply voltage is applied to winding 2. Iron-containing objects are attracted to the armor plate 3. The iron separator is lifted together with the iron-containing objects and moved to the place of unloading. Winding 2 relieves voltage. The iron-containing elements are separated, and the cycle of work is repeated.

Description

The utility model relates to the separation of materials by magnetic properties and can be used in the metallurgical and mining industries.

Currently, iron separators are widely known, where a permanent magnet is installed above the conveyor belt (see, for example, http://www.mastermagnets.com/product/overband-magnets. IMRO Mashinenbau GMBH iron separators), which are used in the mining and mining industries. Russian industry produces self-unloading electromagnetic iron separators (separators) with natural cooling, the electromagnetic coils of which are isolated by a compound based on epoxy resins or organosilicon compounds.

Known RF patent No. 2023514 "Iron separator", IPC V03C 1/16, priority from 03/14/1990, publ. 11/30/1994. The essence of the invention lies in the fact that a suspended electromagnet is installed above the conveyor belt, which is separated from the material transported on the belt by a non-magnetic disk rotating on an axis perpendicular to the plane of the belt.

Known suspended electromagnetic iron separator containing an electromagnetic system consisting of a magnetic circuit and a field winding, loading and unloading device, while the magnetic circuit is made in the form of a hollow torus with an annular gap on the surface of the magnetic circuit, and the field windings are located in the inner cavity of the torus. (see Russian patent No. 1750730 "Suspended electromagnetic iron separator", IPC V03C 1/16, priority dated 19.03.1990, publ. 30.07.1992).

The main disadvantage of the above separators is the high heating of electromagnetic coils (up to 130 ° C). Heating leads to an increase in the resistance of electromagnetic coils and, as a consequence, to a decrease in the electromagnetic field induced by these coils (up to 50%). High heating leads to a decrease in the service life of interturn and case insulation. To reduce the heating of the coils, manufacturers go to reduce the resistance of the coils, which is achieved by increasing the cross-section of the wire from which the coils are made, but this leads to an increase in the cost of the product.

The closest in technical essence to the proposed one is a suspended electromagnetic iron separator containing a housing, an electromagnetic system consisting of a W-shaped magnetic circuit and an excitation winding located on the central core of the magnetic circuit, an oil cooling system, liquid cooling system, containing a reservoir with cooling oil-liquid with distribution the neck and oil pipelines (see patent CN 2668265 Y, 05.01, 2005, B03C 1/00.

The disadvantage of this suspended electromagnetic iron separator is its low reliability due to cooling only by the oil cooling system.

The technical result of the utility model is to increase the reliability of the suspended electromagnetic iron separator by improving the cooling of the field winding.

The technical result is achieved by the fact that in a suspended electromagnetic iron separator containing a housing, an electromagnetic system consisting of a W-shaped magnetic circuit and an excitation winding located on the central core of the magnetic circuit, an oil cooling system - liquid - cooling, containing a reservoir with cooling oil - liquid - with a distribution neck and oil pipelines, the Sh-shaped magnetic circuit is made in the form of a housing with a developed ribbed surface, made in one but the whole by casting with an excitation coil placed in it.

In FIG. 1 shows a General view of the proposed suspended electromagnetic iron separator with liquid cooling; in FIG. 2 shows a sectional view of a suspended electromagnetic iron separator.

In the drawings, reference numeral 1 denotes a magnetic circuit serving as a housing with a developed ribbed surface; position 2 - excitation coil; position 3 - protective armor plate made of non-magnetic material; position 4 - expansion tank; positions 5, 6 - oil pipe-lines; position 7 - filler neck with cork; position 8 - drain neck with cork; position 9 - air dryer. the role of which can be performed by silica gel; position 10 - coolant (transformer oil); positions 11, 12, 13, 14 - fixing eyes; position 15 is the oil level indicator; position 16 is the terminal box.

The proposed suspended electromagnetic iron separator operates as follows. The iron separator clings to the mounting eyes 11, 12, 13, 14 to a cargo-moving device, for example, to a cargo crane or a beam crane, rises up and moves to the loading point. At the loading point, the iron separator is lowered, winding 2 (excitation coil) is turned on (supply voltage is applied to winding 2). Iron-containing objects are attracted to the armor plate 3. The iron separator is lifted together with the iron-containing objects and moved to the place of unloading. Winding 2 relieves voltage. The iron-containing elements are separated, and the cycle of work is repeated.

Thanks to the magnetic circuit 1, which plays the role of a body with a developed ribbed surface, made in one piece by casting, it is possible to increase the reliability of work by reducing the heating of the coils without using any additional cooling means.

Improving the reliability of the device due to improved cooling of the field winding is the advantage and advantage of the proposed technical solution compared to the prototype.

Claims (1)

Suspended electromagnetic iron separator comprising a housing, an electromagnetic system consisting of a W-shaped magnetic circuit and an excitation winding located on the central core of the magnetic circuit, an oil cooling system - liquid cooling system, comprising a reservoir with cooling oil-liquid, with a distribution neck and oil pipelines, characterized in that the U-shaped magnetic circuit is made in the form of a housing with a developed ribbed surface, made in one piece by casting, with in it an excitation coil.

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