Furnace cover structure

Abstract

The utility model relates to a furnace cover structure which comprises an annular furnace cover end plate and a cylindrical furnace cover body which is coaxially arranged at the inner end of the furnace cover end plate and protrudes upwards, and the furnace cover end plate and the furnace cover body form a stepped shaft shape with a large lower end and a small upper end. A vertical through hole corresponding to the position of a furnace cavity of the intermediate frequency furnace is formed in the middle of the top of the furnace cover body, and a connecting piece which is annularly arranged on the peripheral side of the vertical through hole and used for being connected with refractory furnace charge on the intermediate frequency furnace is arranged on the lower surface of the top of the furnace cover body. The intermediate frequency furnace cover is reasonable in structural design, the furnace cover end plate and the furnace cover body form the stepped shaft shape, the structural strength of the furnace cover is improved, the connecting piece is arranged on the inner side of the furnace cover body, when the furnace cover covers the intermediate frequency furnace, the connecting piece is connected with refractory furnace charge on the intermediate frequency furnace, the connecting structural strength between the furnace cover and the intermediate frequency furnace is improved, and the service life of the intermediate frequency furnace is prolonged. And the deformation of the furnace cover during working is effectively reduced.

Description

Technical Field

[0001] The utility model relates to a furnace cover structure. Background Art

[0002] An intermediate frequency furnace is an induction heating device that converts a 50Hz electrical frequency to 300-1000Hz, utilizing the eddy current effect to heat metals and other induction materials. Heat is continuously released during the heating process. To ensure a stable temperature within the furnace and improve energy efficiency, a furnace cover is typically required during smelting or reactions. However, existing intermediate frequency furnace covers are relatively simple, consisting of a flat iron or steel plate that simply covers the furnace body. The lack of connection between the cover and the body results in insufficient structural strength and is prone to deformation. Utility Model Content

[0003] The present invention aims to improve the problems existing in the prior art, that is, to provide a furnace cover structure with reasonable design and improved structural strength.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a furnace cover structure, including a circular furnace cover end plate, a cylindrical furnace cover body coaxially arranged at the inner end of the furnace cover end plate and protruding upward, a vertical through hole corresponding to the furnace cavity position of the medium frequency furnace is opened in the middle of the top of the furnace cover body, and a connecting piece is provided on the lower surface of the top of the furnace cover body, which is arranged on the outer peripheral side of the vertical through hole and is used to connect with the refractory charge on the medium frequency furnace.

[0005] Furthermore, the connecting member includes a first connecting member and a second connecting member that are coaxially arranged and distributed inside and outside, the first connecting member includes a plurality of first connecting rods that are circumferentially evenly distributed around the axis of the vertical through hole, the first connecting rods are in an inverted "stem" shape, and the first connecting rods are arranged along the tangent direction of the circumference of the vertical through hole; the second connecting member includes a plurality of second connecting rods that are circumferentially evenly distributed around the axis of the vertical through hole, the second connecting rods are also in an inverted "stem" shape, and the second connecting rods are parallel to the radial direction of the vertical through hole, the first connecting rod and the second connecting rod are convenient for hanging the refractory charge arranged on the upper end of the medium frequency furnace above the electromagnetic coil.

[0006] Furthermore, a plurality of first reinforcing rods are arranged inside the top end of the furnace cover body, and are arranged in a ring around the outside of the vertical through hole. The first reinforcing rods are arranged vertically and the lower ends extend out of the furnace cover body. The positions of the plurality of first reinforcing rods correspond to the positions of the plurality of first connecting hanging rods, and the first connecting hanging rods are welded and fixed to the bottom of the first reinforcing rods.

[0007] Furthermore, an annular reinforcement rod is arranged inside the top end of the furnace cover body and is arranged around the outside of multiple first reinforcement rods. The inner circumferential side of the annular reinforcement rod is fixed with multiple second reinforcement rods that are arranged vertically and whose lower ends extend out of the furnace cover body. The positions of the multiple second reinforcement rods correspond to the positions of the multiple second connecting hanging rods, and the second connecting hanging rods are welded and fixed to the bottom of the second reinforcement rods.

[0008] Furthermore, the furnace cover body and the furnace cover end plate are formed by integral sand casting, and the first reinforcing rod, the annular reinforcing rod and the second reinforcing rod are pre-buried inside the furnace cover body.

[0009] Furthermore, an iron tapping chute is provided on the top of the furnace cover body, the iron tapping chute is connected to the vertical through hole, and the iron tapping chute is inclined.

[0010] Furthermore, the furnace cover end plate and the furnace cover body form a stepped shaft shape.

[0011] Compared with the prior art, the present invention has the following effects: the present invention has a reasonable structural design, the furnace cover end plate and the furnace cover body form a stepped shaft shape, which improves the structural strength of the furnace cover, and a connecting piece is provided on the inner side of the furnace cover body. When the furnace cover is provided on the medium frequency furnace, the connecting piece is connected to the refractory charge on the medium frequency furnace, which improves the structural strength of the connection between the furnace cover and the medium frequency furnace and effectively reduces the deformation of the furnace cover during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the main cross-sectional structure of an embodiment of the utility model;

[0013] Figure 2 This is a schematic diagram of the bottom view of the structure of an embodiment of the utility model;

[0014] Figure 3 yes Figure 2 The structural diagram of the connecting parts is omitted;

[0015] Figure 4 This is a schematic top view of the structure of an embodiment of the utility model;

[0016] Figure 5 This is a schematic diagram of the structure of the first and second connecting rods in an embodiment of the present utility model;

[0017] Figure 6 It is a schematic diagram of the use structure of an embodiment of the utility model.

[0018] In the picture:

[0019] 1-furnace cover structure; 2-furnace cover end plate; 3-furnace cover body; 4-furnace chamber; 5-vertical through hole; 6-first connecting hanging rod; 7-second connecting hanging rod; 8-electromagnetic coil; 9-refractory charge; 10-furnace lining; 11-first reinforcement rod; 12-annular reinforcement rod; 13-second reinforcement rod; 14-iron tapping chute; 15-insulation layer. DETAILED DESCRIPTION

[0020] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0021] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention.

[0022] like Figures 1 to 5 As shown, the utility model provides a furnace cover structure, the furnace cover structure 1 includes a circular furnace cover end plate 2, and a cylindrical furnace cover body 3 coaxially arranged at the inner end of the furnace cover end plate 2 and protruding upward, the furnace cover end plate 2 and the furnace cover body 3 form a stepped shaft shape with a larger lower end and a smaller upper end, and a vertical through hole 5 corresponding to the position of the furnace cavity 4 of the medium frequency furnace is opened in the middle of the top of the furnace cover body 3, and a connecting piece is provided on the lower surface of the top of the furnace cover body 3, which is arranged on the outer peripheral side of the vertical through hole 5 and is used to connect with the refractory charge on the medium frequency furnace.

[0023] Specifically, the connecting member includes a first connecting member and a second connecting member that are coaxially arranged and distributed inside and outside. The first connecting member includes a plurality of first connecting rods 6 that are circumferentially uniformly distributed around the axis of the vertical through hole 5. The first connecting rods 6 are in an inverted "stem" shape. The first connecting rods 6 are arranged along the tangential direction of the circumference of the vertical through hole 5; the second connecting member includes a plurality of second connecting rods 7 that are circumferentially uniformly distributed around the axis of the vertical through hole 5. The second connecting rods 7 are also in an inverted "stem" shape. The second connecting rods 7 are parallel to the radial direction of the vertical through hole 5. The first connecting rods 6 and the second connecting rods 7 are convenient for hanging the refractory charge 9 arranged above the electromagnetic coil 8 at the upper end of the medium frequency furnace.

[0024] When in use, the furnace cover structure 1 is placed on the furnace body of the intermediate frequency furnace, the furnace cover end plate 2 is in contact with the top surface of the furnace body, the vertical through hole 5 of the furnace cover body 3 corresponds to the position of the furnace cavity 10 of the intermediate frequency furnace, and the refractory furnace charge 9 arranged on the upper end ring of the intermediate frequency furnace above the electromagnetic coil 8 is hung on the first connecting hanging rod 6 and the second connecting hanging rod 7 to connect the furnace cover with the furnace body of the intermediate frequency furnace. The furnace cover end plate and the furnace cover body form a stepped shaft shape to improve the structural strength of the furnace cover of this application, and a connecting piece is provided on the inner side of the furnace cover body. When the furnace cover is placed on the intermediate frequency furnace, the connecting piece is connected to the refractory furnace charge on the intermediate frequency furnace, thereby improving the structural strength of the connection between the furnace cover and the intermediate frequency furnace and effectively reducing the deformation of the furnace cover during operation.

[0025] In this embodiment, to enhance the structural strength of the furnace cover, the top of the furnace cover body 3 is internally provided with a plurality of first reinforcing rods 11 disposed around the outside of the vertical through-holes 5. The first reinforcing rods 11 are vertically disposed, with their lower ends extending out of the furnace cover body 3. An annular reinforcing rod 12 is disposed internally at the top of the furnace cover body 3, surrounding the plurality of first reinforcing rods 11. The inner circumference of the annular reinforcing rod 12 is fixed with a plurality of second reinforcing rods 13 disposed vertically, with their lower ends extending out of the furnace cover body 3. The first, annular, and second reinforcing rods enhance the structural strength of the top of the furnace cover body and reduce deformation during use.

[0026] In this embodiment, the positions of the plurality of first reinforcing rods 11 correspond to the positions of the plurality of first connecting hanging rods 6 , and the first connecting hanging rods 6 are welded and fixed to the bottom of the first reinforcing rods 11 .

[0027] In this embodiment, the positions of the plurality of second reinforcing rods 12 correspond to the positions of the plurality of second connecting hanging rods 7 , and the second connecting hanging rods 12 are welded and fixed to the bottom of the second reinforcing rods 7 .

[0028] In this embodiment, the furnace cover body 3 and the furnace cover end plate 2 are integrally formed by sand casting, and the first reinforcing rod, the annular reinforcing rod and the second reinforcing rod are all pre-buried inside the furnace cover body during sand casting.

[0029] In this embodiment, an iron tapping chute 14 is provided on the top of the furnace cover body 3 . The iron tapping chute 14 is communicated with the vertical through hole 5 . The iron tapping chute is inclined to facilitate the discharge of molten iron.

[0030] If the present invention discloses or involves components or structural parts that are fixedly connected to each other, then, unless otherwise stated, the fixed connection can be understood as: a detachable fixed connection (for example, connection using bolts or screws), and can also be understood as: a non-detachable fixed connection (for example, riveting, welding). Of course, the mutual fixed connection can also be replaced by an integrated structure (for example, manufactured by integral molding using a casting process) (except where it is obviously impossible to use an integrated molding process).

[0031] In addition, unless otherwise stated, the terms used in any technical solution disclosed in the above-mentioned utility model to express positional relationships or shapes include states or shapes that are approximate, similar or close thereto.

[0032] Any component provided by the present invention may be assembled from a plurality of separate components, or may be a separate component manufactured by an integral forming process.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and not to limit it; although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the utility model can still be modified or some technical features can be replaced by equivalents; without departing from the spirit of the technical solution of the utility model, they should all be included in the scope of the technical solution for protection of the utility model.

Claims

1. A furnace cover structure, characterized in that: It includes a circular furnace cover end plate, a cylindrical furnace cover body coaxially arranged at the inner end of the furnace cover end plate and protruding upward, a vertical through hole corresponding to the furnace cavity position of the medium frequency furnace is opened in the middle of the top of the furnace cover body, and a connecting piece is provided on the lower surface of the top of the furnace cover body, which is arranged on the outer peripheral side of the vertical through hole and is used to connect with the refractory charge on the medium frequency furnace.

2. A furnace cover structure according to claim 1, characterized in that: The connecting member includes a first connecting member and a second connecting member that are coaxially arranged and distributed inside and outside. The first connecting member includes a plurality of first connecting rods that are circumferentially evenly distributed around the axis of the vertical through hole. The first connecting rods are in an inverted "stem" shape. The first connecting rods are arranged along the tangent direction of the circumference of the vertical through hole; the second connecting member includes a plurality of second connecting rods that are circumferentially evenly distributed around the axis of the vertical through hole. The second connecting rods are also in an inverted "stem" shape. The second connecting rods are parallel to the radial direction of the vertical through hole. The first connecting rod and the second connecting rod are convenient for hanging refractory furnace charges arranged on the upper end of the medium frequency furnace above the electromagnetic coil.

3. A furnace cover structure according to claim 2, characterized in that: A plurality of first reinforcing rods are arranged inside the top end of the furnace cover body and are ringed on the outside of the vertical through holes. The first reinforcing rods are arranged vertically and the lower ends extend out of the furnace cover body. The positions of the plurality of first reinforcing rods correspond to the positions of the plurality of first connecting hanging rods, and the first connecting hanging rods are welded and fixed to the bottom of the first reinforcing rods.

4. A furnace cover structure according to claim 3, characterized in that: An annular reinforcement rod is arranged inside the top end of the furnace cover body and is arranged around the outside of multiple first reinforcement rods. Multiple second reinforcement rods are fixed on the inner circumferential side of the annular reinforcement rod, which are arranged vertically and extend out of the furnace cover body at the lower ends. The positions of the multiple second reinforcement rods correspond to the positions of the multiple second connecting hanging rods, and the second connecting hanging rods are welded and fixed to the bottom of the second reinforcement rods.

5. The furnace cover structure according to claim 4, characterized in that: The furnace cover body and the furnace cover end plate are formed by integrated sand casting, and the first reinforcing rod, the annular reinforcing rod and the second reinforcing rod are pre-buried inside the furnace cover body.

6. The furnace cover structure according to claim 1, characterized in that: An iron tapping chute is provided on the top of the furnace cover body. The iron tapping chute is connected to the vertical through hole and is inclined.

7. The furnace cover structure according to claim 1, characterized in that: The furnace cover end plate and the furnace cover body form a stepped shaft shape.

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