CN202173908U

CN202173908U - Electromagnetic agitator

Info

Publication number: CN202173908U
Application number: CN2011202335209U
Authority: CN
Inventors: 任杰
Original assignee: YUEYANG QIANGLI ELECTROMAGNET CO Ltd
Current assignee: YUEYANG QIANGLI ELECTROMAGNET CO Ltd
Priority date: 2011-07-05
Filing date: 2011-07-05
Publication date: 2012-03-28
Anticipated expiration: 2021-07-05

Abstract

The utility model relates to electromagnetic agitating equipment for steel making, in particular to a rotating magnetic field type electromagnetic agitator, which comprises iron cores, coils and magnetic poles. A closed magnetic circuit is formed by at least two iron cores wound by the coils, and integrally fixed with a framework, an inner protective cover and an outer protective cover, and the iron cores penetrate through coil windings thoroughly. The electromagnetic agitator is mainly characterized in that the coils are sleeved on the plurality of iron cores forming the magnetic circuit, a plurality of coil fields are centralized in a certain direction, and thereby low current density can generate powerful magnetic fields to meet utilization requirements. When the electromagnetic agitator is compared with an existing agitator, a great deal of cost is saved, and magnetic fields can be more powerful.

Description

Magnetic stirrer

Technical field

The utility model relates to the steel-making electromagnetic stirring equipment, refers in particular to a kind of revolving-field type magnetic stirrer.

Background technology

Produce the magnetic field rotary electric magnetic stirrer that uses at present, because volume is little, electric current is big, water-cooled must be arranged but, has increased insulation costs like this; Also reduced service life.

Summary of the invention

The purpose of the utility model is to improve and innovate to the shortcoming that exists in the background technology and problem; Provide a kind of and can improve the number of turn of placing coil to greatest extent; Only need the new magnetic circuit mode of less electric current to form rotating excitation field, and need not water-cooled, the magnetic stirrer that insulation costs is low.

The purpose of the utility model is a kind of agitator that comprises iron core, coil and magnetic pole of structure; It is by at least two sections synthetic closed magnetic circuits of iron core group that are wound with coil; And with skeleton and in guard shield, outer shield fastening in aggregates, wherein iron core passes completely through each coil windings.

The utlity model has following advantage and beneficial effect:

The utility model mainly is to be with coil forming on a plurality of iron cores of magnetic circuit, and it can concentrate a plurality of coils field in certain direction again simultaneously, thereby little current density also can produce powerful magnetic field, can satisfy instructions for use.The utility model will be practiced thrift a large amount of costs than the agitator that uses now, and magnetic field can be stronger.

Description of drawings

Fig. 1 is one of the utility model structural representation.

Fig. 2 is two of the utility model structural representation.

Fig. 3 is three of the utility model structural representation.

Fig. 4 is one of the utility model operation principle sketch map.

Fig. 5 is two of the utility model operation principle sketch map.

Fig. 6 is three of the utility model operation principle sketch map.

Fig. 7 is four of the utility model operation principle sketch map.

Fig. 8 is five of the utility model operation principle sketch map.

Wherein: Fig. 4 representes an iron core that is made up of ring bodies; Fig. 5 is illustrated in and is wound with many phase coils on the iron core, and passes to the electric current that modulates, and direction is shown in figure, and it produces the diagram magnetic direction; Fig. 6 representes the variation along with this modulated current, and the coil magnetic field direction also changes, and can see that whole magnetic direction also begins to have rotated; Fig. 7 refers to can the coil sections that be close to phase be overlapped on same iron core position up and down in order to increase the magnetic pole surfaces of revolution, the coil magnetic field is here offset, thereby increased magnetic circuit; Fig. 8 refers to can be provided with the pairing coil current of the magnetic pole surfaces of revolution is modulated to no current 0 in order to increase the magnetic pole surfaces of revolution better.

The specific embodiment

Can know by Fig. 1 to 8; The utility model comprises iron core, coil and magnetic pole; It is combined into a closed magnetic circuit by at least two sections iron cores 3 that are wound with coil 7, and with skeleton 6 and in guard shield 2, outer shield 1 fastening in aggregates, wherein iron core 3 passes completely through each coil windings.

The described agitator of the utility model is provided with support foot 4.Described coil 7 one mutually or at least the two-phase lap wound on iron core 3, and every group of coil 7 all fully jacket live corresponding iron core 3.Described coil 7, iron core 3, skeleton 6 and inside and outside guard shield 2,1 are combined into the circular agitator of many magnetic poles, perhaps square agitator, perhaps polygon agitator.

The structural principle of the utility model:

The utility model comprises a plurality of magnetic poles, a plurality of coil, a plurality of skeleton, supporting, guard shield, line box or the like; For the multistage magnetic pole, be with a plurality of coils and form closed magnetic circuits; Supporting and guard shield are installed on it again; When polyphase ac that feeds particular modulation in the coil or direct current, can produce the magnetic field of a rotation, reach the purpose of electromagnetic agitation.The utility model is dressed up closed magnetic circuit by a plurality of iron core group, and it can be ring-type, also can be other square or hexagons; Be with many group coils on it, and bearing support, support foot are installed, put interior outer shield etc.

The operation principle of the utility model:

In above-mentioned coil, feed heterogeneous modulated electric current, when satisfying the requiring of Fig. 8 A, it can produce the satisfactory magnetic field of size; When this multiphase current was modulated to shown in Fig. 8 B, this magnetic direction had had low-angle deflection, as long as modulation is proper, this deflection will continue, and forms rotating excitation field at last.Because the installation of coil is fully iron core to be entangled, rather than only is nested in the some outstanding part of iron core, thereby is greatly increasing coil turn or increasing conductive section.

The described embodiment of the utility model only is the description that the preferred implementation of the utility model is carried out; Be not that the utility model design and scope are limited; Under the prerequisite that does not break away from the utility model design philosophy, engineers and technicians make the technical scheme of the utility model in this area various modification and improvement all should fall into the protection domain of the utility model; The technology contents that the utility model is asked for protection all is documented in claims.

Claims

1. OnePlant magnetic stirrer; Comprise iron core, coil and magnetic pole; It is characterized in that it is combined into a closed magnetic circuit by at least two sections iron cores (3) that are wound with coil (7); And with skeleton (6) and in guard shield (2), outer shield (1) fastening in aggregates, wherein iron core (3) passes completely through each coil windings.

2. magnetic stirrer according to claim 1 is characterized in that described agitator is provided with support foot (4).

3. magnetic stirrer according to claim 1, it is characterized in that described coil (7) mutually or at least the two-phase lap wound on iron core (3), and every group of coil (7) all fully jacket live corresponding iron core (3).

4. magnetic stirrer according to claim 1 is characterized in that described coil (7), iron core (3), skeleton (6) and inside and outside guard shield (2,1) are combined into the circular agitator of many magnetic poles, perhaps square agitator, perhaps polygon agitator.