Soaking pit furnace

Abstract

The utility model relates to a soaking pit furnace which comprises a furnace body and a furnace cover, the lower side surface of the furnace cover is divided into an annular surface, a vertical surface and a central plane; the annular surface is arranged around the lower side edge of the furnace cover and is lower than the central plane; the central plane is positioned in the middle of the lower side of the furnace cover; the vertical surface is connected between the annular surface and the central plane; a sand sealing cutter is vertically arranged on the annular surface, and the lower end of the sand sealing cutter is higher than the central plane; a high-temperature-resistant elastic sealing body is accommodated between the sand sealing cutter and the vertical plane, and the lower surface of the high-temperature-resistant elastic sealing body is higher than the central plane; a sand seal groove is formed in the edge of an opening in the upper side face of the furnace body, and quartz sand is contained in the sand seal groove. The sand sealing cutter is used for being inserted into the quartz sand in the sand sealing groove when the furnace cover is buckled on the furnace body; the high-temperature-resistant elastic sealing body is used for abutting against the upper side face of the furnace body when the furnace cover is buckled on the furnace body. The utility model has the advantages of good sealing effect between the furnace cover and the furnace body, long service life, energy conservation and environmental protection.

Description

Technical Field

[0001] The utility model relates to the technical field of soaking furnaces, in particular to a soaking furnace. Background Art

[0002] The soaking furnace is a device used for heating and soaking steel ingots before rolling.

[0003] Figure 1 It is a schematic diagram of the structure of the existing soaking furnace cover 1. In order to solve the problem of fire around the joint surface between the furnace cover 11 and the furnace body, the existing soaking furnace usually adopts the sand sealing knife 6 on the furnace cover 1 to be embedded in the quartz sand of the sand sealing groove of the furnace body. This sealing form is used to prevent the fire source in the furnace from emitting from the joint surface, so as to achieve the stability of the furnace pressure.

[0004] However, the existing soaking furnace has the following problems:

[0005] The furnace cover 1 and the furnace body are both cast by using a template. The unevenness of the lower side of the furnace cover 1 and the upper side of the furnace body is inevitable. When the lower side of the furnace cover 1 is combined with the upper side of the furnace body, there will be gaps of varying sizes at the joints. Once there is a gap, the fire source will jump out of the gap and directly burn the sand sealing knife 6.

[0006] The fire source with a high temperature directly burns the sand sealing knife 6, which is very easy to burn and has a reduced service life. Once the sand sealing knife 6 is burned, the sand sealing knife 6 and the quartz sand cannot be sealed, and the fire source will overflow from the burned sand sealing knife 6 to the surroundings, which will make the furnace pressure difficult to control, the heating uniformity of the steel ingot is poor, and the gas consumption is increased. Utility Model Content

[0007] In order to reduce the burning of the sand sealing knife, the present application provides a soaking furnace.

[0008] The soaking furnace provided by the utility model adopts the following technical solution:

[0009] A soaking furnace, comprising a furnace body and a furnace cover; the lower side surface of the furnace cover is divided into an annular surface, a vertical surface and a central plane; the annular surface is arranged around the lower edge of the furnace cover, and its height is lower than the central plane; the central plane is located in the middle of the lower side of the furnace cover; the vertical surface is connected between the annular surface and the central plane; a sand sealing knife is vertically arranged on the annular surface, and the lower end of the sand sealing knife is higher than the height of the central plane; the sand sealing knife and the vertical surface are arranged at intervals, and a high-temperature resistant elastic sealing body is accommodated between the two, and the lower surface of the high-temperature resistant elastic sealing body is higher than the central plane in a natural state; a sand sealing groove is formed on the opening edge of the upper side surface of the furnace body, and quartz sand is accommodated in the sand sealing groove; the sand sealing knife is used to be inserted into the quartz sand in the sand sealing groove when the furnace cover is buckled on the furnace body; the high-temperature resistant elastic sealing body is used to abut against the upper side surface of the furnace body when the furnace cover is buckled on the furnace body.

[0010] Optionally, a limiting portion is formed on one side of the sand sealing knife close to the vertical surface, the limiting portion extends in a direction close to the vertical surface, and a side of the limiting portion opposite to the annular surface is higher than the central plane; the high temperature resistant elastic sealing body is accommodated between the sand sealing knife, the annular surface, the vertical surface and the limiting portion.

[0011] Optionally, a side of the limiting portion away from the sand sealing knife is bent downward to form a sealing portion; when the furnace cover is buckled with the furnace body, the sealing portion and the sand sealing knife are inserted into the quartz sand in the sand sealing groove together.

[0012] Optionally, a sealing groove is opened on the upper side of the furnace body, and the sealing groove is located between the sand sealing groove and the upper opening of the furnace body; when the furnace cover is buckled with the furnace body, the high temperature resistant elastic sealing body is embedded in the sealing groove.

[0013] Optionally, in a natural state, the lower surface of the high temperature resistant elastic sealing body is 15 mm to 25 mm higher than the central plane; when the furnace cover is buckled with the furnace body, the high temperature resistant elastic sealing body is in an extruded state, and the lower surface of the high temperature resistant elastic sealing body is flush with the central plane.

[0014] Optionally, the sealing body is a zirconium-containing fiber module.

[0015] Optionally, the furnace cover and the furnace body are both formed by casting refractory materials.

[0016] As described above, the soaking furnace of the utility model has at least the following beneficial effects:

[0017] 1. The soaking furnace of the utility model adopts a high temperature resistant elastic sealing body as the second sealing, so that the sand sealing knife is not easily burned by the fire source in the furnace, which is beneficial to extend the service life of the sand sealing knife and improve the sealing effect of the sand sealing knife. And due to the elasticity of the high temperature resistant elastic sealing body, it can make up for the gap caused by the uneven surface of the furnace body, thereby playing the role of elastic sealing.

[0018] 2. Since the soaking furnace of the utility model adopts double sealing of sand sealing knife and high temperature resistant elastic sealing body, the sealing performance between the furnace cover and the furnace body is improved, the problem of fire around the soaking furnace is solved, and the precise control of the furnace pressure is realized, thereby improving the uniformity of heating of steel ingots in the furnace and reducing the consumption of gas, which is beneficial to energy saving and environmental protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the existing soaking furnace cover structure.

[0020] Figure 2 It is a schematic diagram of the structure of the furnace cover of the soaking furnace according to the first embodiment of the utility model.

[0021] Figure 3 yes Figure 2 Enlarged view of part A in the figure.

[0022] Figure 4 It is a schematic diagram of the overall structure of the soaking furnace according to the first embodiment of the utility model.

[0023] Figure 5 yes Figure 4 Enlarged view of part B in the middle.

[0024] Figure 6 It is a schematic diagram of the second embodiment of the present utility model for reflecting the structure of the sealing part and the sealing groove.

[0025] Figure numerals: 1. furnace cover; 2. furnace body; 21. sealing groove; 3. annular surface; 4. vertical surface; 5. central plane; 6. sand sealing knife; 61. limiting part; 62. sealing part; 7. sand sealing groove; 8. quartz sand; 9. high temperature resistant elastic sealing body. DETAILED DESCRIPTION

[0026] The following describes the implementation of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and the features in the embodiments can be combined with each other without conflict. It should also be understood that the terms used in the embodiments of the present invention are intended to describe specific implementation schemes, rather than to limit the scope of protection of the present invention. The test methods for which specific conditions are not specified in the following examples are usually carried out under conventional conditions or under the conditions recommended by the manufacturers.

[0027] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so they have no substantial technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effect and purpose that can be achieved by the utility model, should still fall within the scope of the technical content disclosed by the utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the utility model. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the utility model without substantial change of the technical content.

[0028] Embodiment 1

[0029] Please refer to Figure 2-5 The utility model discloses a soaking furnace, which includes a furnace body 2 and a furnace cover 1.

[0030] For details, please refer to Figure 2 , 3 The lower side of the furnace cover 1 is divided into an annular surface 3, a vertical surface 4 and a central plane 5.

[0031] The annular surface 3 is arranged around the edge of the lower side of the furnace cover 1, and its height is lower than the central plane 5. The vertical surface 4 is arranged vertically, and the central plane 5 is located in the middle of the lower side of the furnace cover 1. The vertical surface 4 is connected between the annular surface 3 and the central plane 5. The thickness of the furnace cover 1 at the annular surface 3 is lower than the thickness at the central plane 5.

[0032] A sand sealing knife 6 is vertically arranged on the annular surface 3 , and the lower end of the sand sealing knife 6 is higher than the height of the central plane 5 , that is, the lower end of the sand sealing knife 6 protrudes from the furnace cover 1 .

[0033] The sand sealing knife 6 is spaced apart from the vertical surface 4 , and a high temperature resistant elastic sealing body 9 is accommodated therebetween. The lower surface of the high temperature resistant elastic sealing body 9 is higher than the central plane 5 in a natural state.

[0034] The upper side of the furnace body 2 has an opening for the steel ingot to enter. The edge of the opening on the upper side of the furnace body 2 is formed with a sand sealing groove 7, and the sand sealing groove 7 contains quartz sand 8.

[0035] Please refer to Figure 4 , 5 When the furnace cover 1 is buckled with the furnace body 2, the sand sealing knife 6 on the furnace cover 1 is inserted into the quartz sand 8 of the sand sealing groove 7 of the furnace body 2 to form the first layer of sealing between the furnace cover 1 and the furnace body 2. The high temperature resistant elastic sealing body 9 on the furnace cover 1 abuts against the upper side of the furnace body 2 around the opening. Since the high temperature resistant elastic sealing body 9 is elastic, it is compressed between the furnace cover 1 and the furnace body 2, does not affect the buckling of the furnace cover 1 and the furnace body 2, and can form the second layer of sealing between the furnace cover 1 and the furnace body 2.

[0036] It should be noted that when the lower side of the high temperature resistant elastic sealing body 9 is too much higher than the height of the central plane 5, the depth of the sand sealing knife 6 inserted into the quartz sand 8 will be too shallow, reducing the sealing effect of the sand sealing knife 6. When the lower side of the high temperature resistant elastic sealing body 9 is too little higher than the height of the central plane 5, the degree of compression of the high temperature resistant elastic sealing body 9 will be reduced, and the elastic force generated by itself will be reduced, thereby reducing the pressure pressing it on the upper side of the furnace body 2, reducing the sealing effect of the high temperature resistant elastic sealing body 9.

[0037] Therefore, in this embodiment, the height of the lower surface of the high temperature resistant elastic sealing body 9 above the central plane 5 is 15 mm to 25 mm, for example, 15 mm, 20 mm, or 25 mm.

[0038] Please continue to refer to Figure 3 In order to make the high temperature resistant elastic sealing body 9 more firmly installed, the side of the sand sealing knife 6 close to the vertical surface 4 extends toward the vertical surface 4 to form a limiting portion 61, and the side of the limiting portion 61 opposite to the annular surface 3 is flush with the lower surface of the high temperature resistant elastic sealing body 9. The high temperature resistant elastic sealing body 9 is constrained between the sand sealing knife 6, the annular surface 3, the vertical surface 4 and the limiting portion 61, and is firmly installed and not easy to loosen, which is conducive to ensuring the sealing effect of the high temperature resistant elastic sealing body 9.

[0039] Furthermore, in the present embodiment, the high temperature resistant elastic sealing body 9 adopts a zirconium-containing fiber module. The zirconium-containing fiber module is formed by folding and compressing a zirconium ceramic fiber blanket, and has the advantages of low thermal conductivity, low heat capacity, good thermal stability, good heat and shock resistance, and excellent elasticity. Using the zirconium-containing fiber module as the material of the high temperature resistant elastic sealing body 9 is conducive to ensuring the sealing effect of the high temperature resistant elastic sealing body 9 and improving the service life of the high temperature resistant elastic sealing body 9.

[0040] The furnace cover 1 and the furnace body 2 of the soaking furnace of the utility model are both formed by refractory casting, and after double sealing by the sand sealing knife 6 and the high temperature resistant elastic sealing body 9, the steel ingot can be well soaked and has a long service life.

[0041] In some other embodiments of the present invention, the high temperature resistant elastic sealing body 9 can be made of other materials that are resistant to high temperatures and have good elasticity.

[0042] In summary, the soaking furnace of the present invention uses the high temperature resistant elastic sealing body 9 as the second seal, so that the sand sealing knife 6 is not easily burned by the fire source in the furnace, which is beneficial to prolong the service life of the sand sealing knife 6 and improve the sealing effect of the sand sealing knife 6. And due to the elasticity of the high temperature resistant elastic sealing body 9, it can make up for the gap caused by the uneven surface of the furnace body 2, thereby playing the role of elastic sealing.

[0043] Furthermore, since the soaking furnace of the utility model adopts double sealing of the sand sealing knife 6 and the high temperature resistant elastic sealing body 9, the sealing performance between the furnace cover 1 and the furnace body 2 is improved, the problem of fire around the soaking furnace is solved, and the precise control of the furnace pressure is achieved, thereby improving the uniformity of heating the steel ingots in the furnace and reducing the consumption of gas, which is beneficial to energy saving and environmental protection.

[0044] Embodiment 2

[0045] Please refer to Figure 6 The difference between the second embodiment and the first embodiment is that:

[0046] The side of the limiting portion 61 away from the sand sealing knife 6 is bent downward to form a sealing portion 62. The sealing portion 62 is used to be inserted into the quartz sand 8 in the sand sealing groove 7 together with the sand sealing knife 6 when the furnace cover 1 and the furnace body 2 are buckled.

[0047] The limiting portion 61 enlarges the contact area between the sand sealing knife 6 and the quartz sand 8 , and can further improve the sealing effect of the sand sealing knife 6 .

[0048] A sealing groove 21 is provided on the upper side of the furnace body 2, and the sealing groove 21 is located between the sand sealing groove 7 and the upper opening of the furnace body 2. When the furnace cover 1 is buckled with the furnace body 2, the high temperature resistant elastic sealing body 9 is embedded in the sealing groove 21.

[0049] Specifically, the depth of the sealing groove 21 matches the height of the central plane 5 at the upper position of the high temperature resistant elastic sealing body 9 in the natural state, so that the high temperature elastic sealing body can be compressed while being embedded in the sealing groove 21 .

[0050] Compared with compressing the high-temperature resistant elastic sealing body 9 and abutting it against the upper side of the furnace body 2, embedding the high-temperature resistant sealing body into the sealing groove 21 further extends the path of the fire source in the furnace body 2 to burn to the sand sealing knife 6, thereby further reducing the possibility of the fire source burning the sand sealing knife 6, improving the sealing effect of the high-temperature resistant sealing body, and helping to increase the service life of the sand sealing knife 6.

[0051] It should be noted that the “upper” and “lower” mentioned in this embodiment are introduced to more clearly describe the implementation mode of the utility model, which describes the positional relationship between the various components after the furnace cover 11 is correctly installed on the furnace body 22.

[0052] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A soaking furnace, characterized in that: It comprises a furnace body (2) and a furnace cover (1); The lower side surface of the furnace cover (1) is divided into an annular surface (3), a vertical surface (4) and a central plane (5); The annular surface (3) is arranged around the lower edge of the furnace cover (1) and is lower in height than the central plane (5); the central plane (5) is located in the middle of the lower side of the furnace cover (1); the vertical surface (4) is connected between the annular surface (3) and the central plane (5); A sand sealing knife (6) is vertically arranged on the annular surface (3), and the lower end of the sand sealing knife (6) is higher than the height of the central plane (5); The sand sealing knife (6) is spaced apart from the vertical surface (4), and a high temperature resistant elastic sealing body (9) is accommodated between the two. The lower surface of the high temperature resistant elastic sealing body (9) is higher than the central plane (5) in a natural state. A sand sealing groove (7) is formed at the opening edge of the upper side of the furnace body (2), and quartz sand (8) is contained in the sand sealing groove (7); The sand sealing knife (6) is used to be inserted into the quartz sand (8) in the sand sealing groove (7) when the furnace cover (1) is buckled onto the furnace body (2); The high temperature resistant elastic sealing body (9) is used to abut against the upper side surface of the furnace body (2) when the furnace cover (1) is buckled onto the furnace body (2).

2. The soaking furnace according to claim 1, characterized in that: A limiting portion (61) is formed on a side of the sand sealing knife (6) close to the vertical surface (4), the limiting portion (61) extends in a direction close to the vertical surface (4), and a side of the limiting portion (61) opposite to the annular surface (3) is flush with the lower surface of the high temperature resistant elastic sealing body (9); The high temperature resistant elastic sealing body (9) is accommodated between the sand sealing knife (6), the annular surface (3), the vertical surface (4) and the limiting portion (61).

3. The soaking furnace according to claim 2, characterized in that: The side of the limiting portion (61) away from the sand sealing knife (6) is bent downward to form a sealing portion (62); The sealing portion (62) is used to be inserted into the quartz sand (8) in the sand sealing groove (7) together with the sand sealing knife (6) when the furnace cover (1) and the furnace body (2) are buckled.

4. The soaking furnace according to claim 1, characterized in that: A sealing groove (21) is provided on the upper side of the furnace body (2), and the sealing groove (21) is located between the sand sealing groove (7) and the upper opening of the furnace body (2); The sealing groove (21) is used to embed the high-temperature resistant elastic sealing body (9) therein when the furnace cover (1) and the furnace body (2) are buckled together.

5. The soaking furnace according to claim 1, characterized in that: In a natural state, the lower surface of the high temperature resistant elastic sealing body (9) is 15 mm to 25 mm higher than the central plane (5); When the furnace cover (1) and the furnace body (2) are buckled together, the high temperature resistant elastic sealing body (9) is in an extruded state, and the lower surface of the high temperature resistant elastic sealing body (9) is flush with the central plane (5).

6. The soaking furnace according to any one of claims 1 to 5, characterized in that: The sealing body is a zirconium-containing fiber module.

7. The soaking furnace according to claim 1, characterized in that: The furnace cover (1) and the furnace body (2) are both formed by casting refractory materials.

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