CN203457340U

CN203457340U - Magnetic yoke for intermediate frequency electric induction furnace

Info

Publication number: CN203457340U
Application number: CN201320522969.6U
Authority: CN
Inventors: 陈振耀
Original assignee: NINGBO SHENGUANG ELECTRIC FURNACE CO Ltd
Current assignee: NINGBO SHENGUANG ELECTRIC FURNACE CO Ltd
Priority date: 2013-08-26
Filing date: 2013-08-26
Publication date: 2014-02-26
Anticipated expiration: 2023-08-26

Abstract

A magnetic yoke for an intermediate frequency electric induction furnace comprises the following components: a plurality of silicon steel sheets which are stacked together, two side boards which are used for clamping the plurality of silicon steel sheets, and a plurality of screws. A connecting board is welded between the two side boards. An insulating sleeve is sleeved on the central part of each screw. An insulating pad and a flat washer are sleeved on each of two ends of each screw. Two ends of each screw are respectively connected with a nut. The side boards and the silicon steel sheets are provided with a plurality of through holes for penetration of screws which are sleeved by the insulating sleeves. Two side boards are respectively connected with a cooling water tank which covers the outer side wall of a corresponding side board. The two cooling water tanks are respectively provided with a plurality of circular holes which correspond with the through holes. Each insulating pad is compressed on a corresponding cooling water tank through the nut and the flat washer. The upper part of the cooling water tank is provided with a water inlet joint, and the lower part is provided with a water outlet joint. The magnetic yoke for the intermediate frequency electric induction furnace is advantageous in that: when water reduction cooling is performed on the magnetic yoke, uniform heating of the side board can be obtained, thereby effectively ensuring normal use of the magnetic yoke.

Description

Medium-frequency induction furnace yoke

Technical field

The utility model relates to a kind of electric furnace parts, particularly a kind of medium-frequency induction furnace yoke.

Background technology

Yoke is mainly used in shielding the magnetic line of force of induction coil outside in medium-frequency induction furnace, avoided the metal partss such as panel in body of heater assembly, upper furnace ring, lower stove circle, support plate to occur because of the situation that is subject to magnetic force line cutting to cause heating distortion even to damage, yoke can also conduct to these magnetic lines of force in molten bath effectively simultaneously, thereby improves the operating efficiency of medium-frequency induction furnace.Current existing medium-frequency induction furnace yoke, as depicted in figs. 1 and 2, it generally comprises the silicon steel sheet 101 that multi-disc stacks, two for clamping side plate 102 and some screw rods 103 of multi-disc silicon steel sheet 101, between two blocks of side plates 102, be welded with connecting plate 104, every screw rod 103 middle parts are all overlapped and are had insulating case 105, every screw rod 103 two ends are all overlapped and are had insulation cushion 106, on side plate 102 and silicon steel sheet 101, have some through holes 107 that have the screw rod 103 of insulating case 105 to penetrate for cover, insulation cushion 106 is pressed on respective side panels 102 lateral walls by nut 108 and the plain washer 109 being connected on screw rod 103, the edge of two side plate 102 lateral walls is all connected with a circle cooling water pipe 110.There is a weak point in the medium-frequency induction furnace of said structure: because the cooling water pipe 110 being connected on side plate 102 lateral walls is to be coiled into a round along side plate 102 lateral wall edges in actual application by yoke, that is to say, cooling water pipe 110 is only distributed in the edge of side plate 102 lateral walls, and the middle part of side plate 102 lateral walls does not have cooling water pipe 110 distributions, therefore, when 110 pairs of yokes of cooling water pipe are carried out cooling down, just likely cause side plate 102 to be heated uneven with regard to generation distortion, thereby affect the normal use of yoke.

Utility model content

The technical problems to be solved in the utility model is, provides a kind of when yoke is carried out to cooling down, can make side plate be heated evenly, thereby guarantees the normal medium-frequency induction furnace yoke of using.

For solving the problems of the technologies described above, the utility model provides a kind of medium-frequency induction furnace yoke of following structure: comprise the silicon steel sheet that multi-disc stacks, two for clamping side plate and some screw rods of multi-disc silicon steel sheet, between two blocks of side plates, be welded with connecting plate, every screw rod middle part is all overlapped and is had insulating case, every screw rod two ends are all overlapped and are had insulation cushion and plain washer, every screw rod two ends are all connected with nut, on side plate and silicon steel sheet, have some through holes that have the screw rod of insulating case to penetrate for cover, wherein, on two side plates, be all connected with a cooling water tank that covers side plate lateral wall, on two cooling water tanks, be equipped with some circular holes corresponding with through hole, insulation cushion is pressed on corresponding cooling water tank by nut and plain washer, cooling water tank top is provided with water supply connector, cooling water tank bottom is provided with water out adapter.

Adopt after said structure, compared with prior art, the utlity model has following advantage: because the utility model medium-frequency induction furnace has replaced original cooling water pipe by yoke with cooling water tank, and cooling water tank has covered the lateral wall of whole side plate, therefore, cooling water tank, when yoke is carried out to cooling down, can guarantee that side plate is heated evenly all the time, thereby effective side plate of having avoided occurs because of the situation that the inequality of being heated deforms, and then has effectively guaranteed the normal use of yoke.

Accompanying drawing explanation

Fig. 1 is the left TV structure profile schematic diagram of yoke for prior art medium-frequency induction furnace;

Fig. 2 is along the cross section enlarged diagram of A-A line in Fig. 1;

Fig. 3 is the left TV structure profile schematic diagram of yoke for the utility model medium-frequency induction furnace;

Fig. 4 is along the cross section enlarged diagram of B-B line in Fig. 3.

Embodiment

Below in conjunction with the drawings and specific embodiments, the utility model medium-frequency induction furnace is described in further detail by yoke.

As shown in Figure 3 and Figure 4, in this embodiment, the utility model medium-frequency induction furnace comprises by yoke the silicon steel sheet 1 that multi-disc stacks, two for clamping side plate 2 and some screw rods 3 of multi-disc silicon steel sheet 1, between two blocks of side plates 2, be welded with connecting plate 4, every screw rod 3 middle parts are all overlapped and are had insulating case 5, every screw rod 3 two ends are all overlapped and are had insulation cushion 6 and plain washer 7, every screw rod 3 two ends are all connected with nut 8, on side plate 2 and silicon steel sheet 1, have some through holes 9 that have the screw rod 3 of insulating case 5 to penetrate for cover, on two side plates 2, be all connected with a cooling water tank 10 that covers side plate 2 lateral walls, on two cooling water tanks 10, be equipped with some circular holes corresponding with through hole 9 11, insulation cushion 6 is pressed on corresponding cooling water tank 10 by nut 8 and plain washer 7, cooling water tank 10 tops are provided with water supply connector 12, cooling water tank 10 bottoms are provided with water out adapter 13.

Above-described embodiment is described preferred implementation of the present utility model; not scope of the present utility model is limited; do not departing under the prerequisite of the utility model design spirit; various distortion and improvement that those of ordinary skills make the technical solution of the utility model, all should fall in the definite protection range of the utility model claims.

Claims

1. a medium-frequency induction furnace yoke, comprise the silicon steel sheet (1) that multi-disc stacks, two for clamping side plate (2) and some screw rods (3) of multi-disc silicon steel sheet (1), between described two blocks of side plates (2), be welded with connecting plate (4), there is insulating case (5) at described every screw rod (3) middle part all cover, described every screw rod (3) two ends are all overlapped insulation cushion (6) and plain washer (7), described every screw rod (3) two ends are all connected with nut (8), on described side plate (2) and silicon steel sheet (1), have some through holes (9) that have the screw rod (3) of insulating case (5) to penetrate for cover, it is characterized in that: on described two side plates (2), be all connected with a cooling water tank (10) that covers side plate (2) lateral wall, on described two cooling water tanks (10), be equipped with some circular holes (11) corresponding with through hole (9), described insulation cushion (6) is pressed on corresponding cooling water tank (10) by nut (8) and plain washer (7), described cooling water tank (10) top is provided with water supply connector (12), described cooling water tank (10) bottom is provided with water out adapter (13).