CN219390450U

CN219390450U - Zirconia corundum electric melting furnace top cover and electric melting furnace

Info

Publication number: CN219390450U
Application number: CN202223561104.9U
Authority: CN
Inventors: 张国芳; 李建卫; 李清博; 李鑫怡
Original assignee: Zhengzhou Fangxin New Material Co ltd
Current assignee: Zhengzhou Fangxin New Material Co ltd
Priority date: 2022-12-30
Filing date: 2022-12-30
Publication date: 2023-07-21
Anticipated expiration: 2032-12-30

Abstract

The utility model belongs to the field of refractory material processing, and particularly relates to a zirconia-corundum electric melting furnace top cover and an electric melting furnace, which comprise a furnace body, wherein zirconia-corundum feed liquid is arranged in the furnace body, the furnace top cover is arranged at the top of the furnace body, the furnace top cover comprises a cover body, an electrode jack is arranged in the middle of the cover body, an oxygen lance jack is arranged beside the electrode jack, an electrode retainer is arranged above the cover body, the electrode retainer is fixedly connected with one end of a carbon electrode, the other end of the carbon electrode penetrates through the electrode jack to extend into the furnace body and contact with the zirconia-corundum feed liquid, an opening is formed at the lower end of the cover body, a casting material is filled in the cover body, the casting material is the same as the zirconia-corundum feed liquid in the furnace, and the casting material formed by casting the zirconia-corundum feed liquid is directly arranged in the cover body.

Description

Zirconia corundum electric melting furnace top cover and electric melting furnace

Technical Field

The utility model belongs to the field of refractory material processing, and particularly relates to a zirconia corundum electric melting furnace top cover and an electric melting furnace.

Background

The zirconia fused cast brick is mainly used as an excellent refractory material for a glass kiln, zirconia fused cast brick is produced by heating zirconia fused cast brick material into feed liquid through a zirconia fused cast furnace, and then casting is carried out, wherein the temperature in the zirconia fused cast furnace is up to 2050 ℃, so that not only is a special furnace body, but also a furnace top cover is a special furnace cover (a common steel furnace cover is extremely easy to burn at 2050 ℃, the burned molten steel falls into the electric furnace to destroy the components of the zirconia fused cast material), the zirconia fused cast brick comprises a cover body 1, a cover plate 11 is fixedly connected to the bottom of the cover body 1, a cavity is formed between the cover body 1 and the cover plate 11, three electrode jacks 13 are arranged in the middle of the furnace top cover and are used for being inserted into carbon electrodes for heating, oxygen lance jacks 14 are arranged beside the electrode jacks 13, two or more sides of the cover body 1 are provided with water through holes 12, part of the water through holes 12 are used for being connected with a water pump for water inlet, and part of the water through holes 12 are used for water outlet, so that the cover plate 11 close to the furnace body is continuously cooled, and the cover plate 11 is prevented from being burned and falls into the electric furnace, and the structure is characterized in that: 1. a set of water cooling system is needed, and the water cooling system consumes additional electric energy, 2. Even if cooling water is continuously introduced, the service life of the furnace top cover is only about two months, and after two months, the cover plate 11 still gradually deforms to reach the scrapping standard, so that the cost is high, and the scrapping furnace cover is a new problem how to reasonably use.

Disclosure of Invention

In order to solve the problems, the utility model provides a zirconia corundum electric melting furnace top cover and an electric melting furnace.

The object of the utility model is achieved in the following way: the utility model provides a zirconia corundum electric melting furnace top cap, includes lid 1, and lid 1 middle part sets up electrode jack 13, and electrode jack 13 side sets up oxygen rifle jack 14, lid 1 lower extreme opening, lid 1 intussuseption packing castable 2, castable 2 is formed by the casting of zirconia corundum feed liquid 151.

Further, the cover body 1 is fixedly connected with the castable 2 through the anchoring nails 21, and the anchoring nails 21 are V-shaped.

Further, the oxygen lance insertion hole 14 is obliquely arranged, and the inclination angle is 15-25 degrees.

The utility model provides a zirconia corundum electric smelting stove, includes furnace body 15, sets up zirconia corundum feed liquid 151 in the furnace body 15, and the furnace body 15 top sets up the stove top cap, the stove top cap includes lid 1, and lid 1 middle part sets up electrode jack 13, and electrode jack 13 side sets up oxygen rifle jack 14, and lid 1 top sets up electrode holder 16, electrode holder 16 fixed connection carbon electrode 161 one end, and the carbon electrode 161 other end passes electrode jack 13 and stretches into in the furnace body 15 and contact zirconia corundum feed liquid 151, lid 1 lower extreme opening, lid 1 intussuseption packing castable 2, the material of castable 2 is the same with the zirconia corundum feed liquid 151 material in the furnace body 15.

Compared with the prior art, the pouring material formed by pouring the zirconia corundum material liquid is directly arranged in the cover body, the structure can be directly and simply transformed according to the scrapped furnace cover, a water cooling system is not needed when the pouring material is used, and the components of the material liquid in the pot are not damaged even if part of the pouring material is burnt and falls into the pot.

Drawings

FIG. 1 is a cross-sectional view of a prior art furnace roof;

FIG. 2 is a top view of a prior art furnace roof;

FIG. 3 is a cross-sectional view of the furnace roof of the present utility model;

FIG. 4 is a bottom view of the furnace roof of the present utility model;

FIG. 5 is a schematic view of the structure of the oxygen lance lifting mechanism;

FIG. 6 is a cross-sectional view of an oxygen lance lifting mechanism;

FIG. 7 is a schematic view of the structure of the oxygen lance lifting mechanism in cooperation with the electric melting furnace.

Wherein, 1 the cover body; 11 cover plates; 12 water ports; 13 electrode jacks; 14 oxygen lance insertion holes; 15 furnace bodies; 151 zirconia corundum material liquid; a 16 electrode holder; 161 carbon electrode; 2 casting materials; 21 anchoring nails; 3, a base; 31 a housing; a 32 hydraulic cylinder; 41 lifting blocks; 411 movable pulleys; 42 cross bars; 421 fixed pulleys; 43 guide pulleys; 5, a steel wire rope; 61 slide rails; 611 connecting rods; 62 sliding blocks; 621 rollers; 63 oxygen lance.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the present utility model, unless explicitly specified and limited otherwise, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., are used for convenience of description and for simplifying the description only with respect to the orientation or positional relationship shown in the drawings, 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, and thus should not be construed as limiting the utility model.

As shown in fig. 1-2, a furnace top cover in the prior art comprises a cover body 1, a cover plate 11 is fixedly connected to the bottom of the cover body 1, a cavity is formed between the cover body 1 and the cover plate 11, three electrode jacks 13 are arranged in the middle of the furnace top cover and are used for being inserted with carbon electrodes for heating, oxygen lance jacks 14 are arranged beside the electrode jacks 13, water through holes 12 are formed in two or more sides of the cover body 1, a part of the water through holes 12 are used for being connected with a water pump for water inflow, a part of the water through holes 12 are used for water outflow, the cover plate 11 close to a furnace body is continuously cooled, the cover plate 11 is prevented from being burned and falling into an electric melting furnace, and the structure has the following problems that: 1. a water cooling system is needed and consumes additional electric energy, 2. Even if cooling water is continuously introduced, the service life of the furnace top cover is only about two months, and the cover plate 11 still gradually deforms to reach the scrapping standard after two months.

As shown in figures 3-4, the zirconia corundum electric melting furnace top cover comprises a cover body 1, an electrode jack 13 is arranged in the middle of the cover body 1, an oxygen lance jack 14 is arranged beside the electrode jack 13, the lower end of the cover body 1 is opened, castable 2 is filled in the cover body 1, and the castable 2 is formed by casting zirconia corundum feed liquid 151.

The structure can be formed by simply reforming the scrapped furnace cover directly, a water cooling system is not needed during use, components of feed liquid in the pot can not be destroyed even if part of the cast zirconium corundum feed liquid falls into the pot after being burnt, and the used cast zirconium corundum feed liquid 151 can also directly use products produced by a factory of the cast zirconium corundum feed liquid per se, so that self-production and self-use are realized, and the cost is saved.

Further, the cover body 1 is fixedly connected with the castable 2 through the anchoring nails 21, and the anchoring nails 21 are V-shaped to prevent the castable 2 from falling off in a whole.

Further, the oxygen lance jack 14 is obliquely arranged, the inclination angle is 15 ° -25 °, and the oxygen lance jack 14 is used for being matched with an oxygen lance system, the oxygen lance jack 14 which is vertically arranged needs to be matched with the oxygen lance system which is vertically lifted, and high-temperature gas vacated at the oxygen lance jack 14 can influence the service life of the oxygen lance 63 which is positioned on the same vertical line, so that the oxygen lance jack 14 is obliquely arranged and matched with an oxygen lance lifting mechanism which is proposed later.

As shown in fig. 7, the zirconia corundum electric melting furnace comprises a furnace body 15, zirconia corundum feed liquid 151 is arranged in the furnace body 15, a furnace top cover is arranged at the top of the furnace body 15, the furnace top cover comprises a cover body 1, an electrode jack 13 is arranged in the middle of the cover body 1, an oxygen gun jack 14 is arranged beside the electrode jack 13, an electrode retainer 16 is arranged above the cover body 1, the electrode retainer 16 is fixedly connected with one end of a carbon electrode 161, the other end of the carbon electrode 161 penetrates through the electrode jack 13 and stretches into the furnace body 15 to be in contact with the zirconia corundum feed liquid 151, the lower end of the cover body 1 is opened, casting materials 2 are filled in the cover body 1, and the casting materials 2 are the same as the zirconia corundum feed liquid 151 in the furnace body 15.

The above is further limited, and the components and proportions of the castable 2 material are required to be completely the same as those of the zirconia corundum material liquid 151 heated in the furnace body 15, so that the influence caused by the falling of the furnace top cover material is minimized.

The structure can be directly formed by simply reforming the scrapped furnace cover:

1. cutting off the cover plate 11 deformed by the scrapped furnace cover, and simultaneously cutting off the hole walls of the electrode jack 13 and the oxygen lance jack 14;

2. the original water through hole 12 is blocked, a mould bar is inserted into the electrode jack 13 and the oxygen lance jack 14 in the cover body 1, and jacks are reserved during casting;

3. the open end of the cover body 1 is upwards arranged, and an anchor nail is welded at the bottom of the inside of the cover body 1;

4. the zirconia corundum feed liquid 151 is cast into the cover body 1, and the zirconia corundum feed liquid 151 can be directly used for products produced by factories, so that self-production and self-use are realized, and the cost is saved.

The furnace cover has a service life of about 3 months in actual use, and has a service life of about half a year in combination with the original structure before scrapping, so that the cost is greatly saved.

As shown in fig. 5-6, an oxygen lance lifting mechanism comprises a base 3, wherein the upper part of the base 3 is fixedly connected with a shell 31, a sliding rail 61 is arranged on the side of the shell 31, a sliding block 62 matched with the sliding rail 61 is arranged on the sliding rail 61, and one side of the sliding block 62 is fixedly connected with an oxygen lance 63; the lifting driving mechanism is arranged in the shell 31, the sliding block 62 is controlled to lift through the lifting driving mechanism, the output end of the lifting driving mechanism is connected with the input end of the stroke amplifying mechanism, and the output end of the stroke amplifying mechanism is connected with the sliding block 62.

Through setting up the stroke mechanism of amplifying for the slider has bigger stroke on the slide rail, can further keep away from the oxygen rifle jack of stove top cap when making the oxygen rifle pull out, extension oxygen rifle life-span.

The oxygen receiving lance 63 is a three-layer oxygen lance 63 in the prior art, and comprises an oxygen channel in the middle layer and two water cooling channels which are mutually communicated.

Further, the lifting driving mechanism is an air cylinder 32, a cylinder seat of the air cylinder 32 is fixedly connected with the lower end inside the shell 31, the stroke amplifying mechanism comprises a lifting block 41 fixedly connected with the output end of the air cylinder 32, the lifting block 41 is hinged with n movable pulleys 411, the stroke amplifying mechanism further comprises a cross rod 42 fixedly connected with the upper end inside the shell 31, the cross rod 42 is hinged with n-1 fixed pulleys 421, and a steel wire rope 51 is arranged between the movable pulleys 411 and the fixed pulleys 421 to form a pulley block structure; the top of one side of the shell 31, which is close to the sliding rail 61, is provided with a guide pulley 43, one end of the steel wire rope 51 bypasses the leftmost movable pulley 411 and is arranged upwards, the top of the left side of the shell 31 is fixedly connected, and the other end of the steel wire rope 51 bypasses the guide pulley 43 and is fixedly connected with a sliding block 62.

Preferably, n is two or one, four times or two times of travel amplification is realized, n is one movable pulley 411, and the fixed pulley 421 and the cross rod 42 are not needed.

Further, two ends of the sliding rail 61 are fixedly connected with the housing 31 through the connecting rods 611 respectively, wherein the length of the connecting rod 611 at the upper end is smaller than that of the connecting rod 611 at the lower end, so that the sliding rail 61 is inclined relative to the vertical direction.

The oxygen lance 63 is displaced in the horizontal direction by tilting further away from the lance insertion hole 14 after being pulled out, preferably by an angle of 15 ° -25 ° corresponding to the foregoing.

Further, at least two sets of rollers 621 are hinged in the sliding block 62, and each set of rollers 621 clamps the sliding rail 61 to realize smooth sliding of the sliding block 62.

When the oxygen lance is used, the lifting block 41 is controlled to lift through the air cylinder 32, and the stroke is amplified through the pulley block structure, so that the length of the sliding rail 61 is furthest away from the oxygen lance jack when the sliding block 62 is pulled out.

The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that it will be apparent to those skilled in the art that several changes and modifications can be made without departing from the general inventive concept, and these should also be regarded as the scope of the utility model.

Claims

1. The utility model provides a zirconia corundum electric melting furnace stove top cap, includes lid (1), and lid (1) middle part sets up electrode jack (13), and electrode jack (13) side sets up oxygen rifle jack (14), its characterized in that: the lower end of the cover body (1) is opened, the cover body (1) is filled with casting materials (2), and the casting materials (2) are formed by casting zirconia corundum feed liquid (151).

2. A zirconia fused cast iron furnace roof as defined in claim 1, wherein: the cover body (1) is fixedly connected with the castable (2) through the anchoring nails (21), and the anchoring nails (21) are V-shaped.

3. A zirconia fused cast iron furnace roof as defined in claim 1, wherein: the oxygen lance insertion holes (14) are obliquely arranged, and the inclination angle is 15-25 degrees.

4. The utility model provides a zirconia corundum electric melting furnace, includes furnace body (15), sets up zirconia corundum feed liquid (151) in furnace body (15), and furnace body (15) top sets up furnace top cap, its characterized in that: the furnace top cover comprises a cover body (1), an electrode jack (13) is arranged in the middle of the cover body (1), an oxygen gun jack (14) is arranged beside the electrode jack (13), an electrode holder (16) is arranged above the cover body (1), one end of a carbon electrode (161) is fixedly connected with the electrode holder (16), the other end of the carbon electrode (161) penetrates through the electrode jack (13) and stretches into a furnace body (15) to be in contact with zirconia corundum feed liquid (151), the lower end of the cover body (1) is open, castable (2) is filled in the cover body (1), and the castable (2) is the same as the zirconia corundum feed liquid (151) in the furnace body (15).