Device for maintaining tubular bricks at tapping hole of converter

Abstract

The utility model relates to the technical field of repair and maintenance of converters, in particular to a device for maintaining tubular bricks at a tapping hole of a converter. Comprising a barrel, cross beams, connecting rods and fixing pieces. The barrel is a topless and bottomless hollow conical barrel, the inner diameter of the top end of the barrel is larger than that of the bottom end, the outer diameter of the bottom end is smaller than the inner diameter of the tapping hole, and the barrel can be inserted into the tapping hole; the cross beam is fixedly connected to the top end face of the barrel, and the connecting rod is vertically and fixedly connected to the cross beam and is perpendicular to the top end face of the barrel; the multiple fixing pieces are symmetrically and fixedly connected to the outer wall of the barrel. The tapping hole inner hole can be maintained, safety and reliability are achieved, repeated maintenance is not needed, labor intensity is reduced, and the service life of the tapping hole is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to the repair and maintenance technical field of converter, specifically to a device for maintaining converter taphole pipe brick. BACKGROUND

[0002] Converter taphole is the only taphole of converter liquid steel, and the working environment is extremely poor. Converter taphole is subjected to high-temperature steel slag chemical corrosion, mechanical scouring, and high-temperature oxidizing furnace gas scouring. Especially, the inner port pipe brick is severely eroded after being subjected to high-temperature oxidizing steel slag scouring during tapping, causing uneven inner port shape, deterioration of slag blocking effect, and even "horn mouth" after the inner port pipe brick falls off. Excessive slag entrapment during the later stage of tapping causes quality accidents. The service life of the taphole cannot be effectively improved due to the influence of inner port erosion, which further seriously affects the safety of the converter lining and limits the economic campaign life of the converter.

[0003] After discovering the inner port pipe brick falling off in the current production, the conventional maintenance is manual Martin sand throwing, furnace material padding, and shotcrete machine shotcreting. It is easy to cause unevenness around the inner port, taphole blockage, and other adverse phenomena. Moreover, multiple maintenance is required during production gaps to achieve the effect, resulting in increased labor intensity and reduced converter production efficiency. UTILITY MODEL CONTENT

[0004] In order to overcome the shortcomings of the prior art, the utility model provides a device for maintaining converter taphole pipe brick, which can maintain the inner port of the taphole, is safe and reliable, does not require multiple maintenance, reduces labor intensity, and improves the service life of the taphole.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A device for maintaining converter taphole pipe brick, comprising a barrel, a cross beam, a connecting rod, and a fixing piece; the barrel is a hollow conical barrel without a top and a bottom, the inner diameter of the top end is larger than the inner diameter of the bottom end, the outer diameter of the bottom end is smaller than the inner diameter of the taphole, and the barrel can be inserted into the taphole; the cross beam is fixedly connected to the top end surface of the barrel, the connecting rod is fixedly connected to the cross beam vertically, and the connecting rod is perpendicular to the top end surface of the barrel; a plurality of fixing pieces are symmetrically fixedly connected to the outer wall of the barrel.

[0007] Further, the inner diameter of the top end of the barrel is 200mm, the inner diameter of the bottom end of the barrel is 160mm, the inner diameter of the taphole is 180-200mm, and the height of the barrel is more than 800mm.

[0008] Further, the cross beam is cross-shaped, and the cross beam is parallel to the top end surface of the barrel.

[0009] Further, the connecting rod is a cylindrical rod corresponding to the slag blocking marker vehicle.

[0010] Further, the fixing piece is a cylindrical rod.

[0011] Further, the fixing pieces are four, which are evenly distributed on the outer wall of the barrel, i.e. the included angle between adjacent fixing pieces is 90 degrees.

[0012] Further, the distance between the fixing piece and the top end surface of the barrel is above 200 mm.

[0013] Further, a refractory material layer is further included, which is wrapped outside the fixing piece.

[0014] Compared with the prior art, the utility model has at least the following technical effects or advantages:

[0015] 1. When the device is used, the slag blocking marker vehicle after the furnace is used to fix the barrel into the taphole, then the dry self-flowing material is used to fill and smooth the inner mouth erosion position, the self-flowing material is used to flow and smooth the inner mouth erosion position of the taphole, the mixed slag and the incomplete tapping phenomenon of the taphole are avoided, it is safe and reliable, does not need to be maintained for many times, reduces the labor intensity, improves the service life of the taphole and the economic furnace life of the converter, and the production capacity of the converter is effectively improved.

[0016] 2. The utility model discloses a barrel top end inner diameter is 200 mm, the barrel bottom end inner diameter is 160 mm, the taphole inner diameter is 180-200 mm, and the barrel height is above 800 mm. The center of gravity of the barrel can be guaranteed to be inside the taphole, and the barrel can be prevented from falling off due to self weight after the furnace is inclined.

[0017] 3. The utility model discloses four fixing pieces, which are evenly distributed on the outer wall of the barrel, so that the barrel can be conveniently inserted into the taphole and fixed. The distance between the fixing piece and the top end surface of the barrel is above 200 mm, so that the barrel is higher than the inner mouth of the taphole by 200 mm, and the taphole can be prevented from being filled up by the self-flowing material when flowing and smoothing. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the three-dimensional structure schematic diagram of the utility model.

[0019] Figure 2 It is another angle three-dimensional structure schematic diagram of the utility model.

[0020] Figure 3 It is the structure schematic front view of the utility model.

[0021] Figure 4 It is the structure schematic plan view of the utility model.

[0022] In the drawing: 1, barrel; 2, cross beam; 3, connecting rod; 4, fixing piece; 5, refractory material layer. DETAILED DESCRIPTION

[0023] In the following, the embodiments of the present application will be described in detail in order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer. In the following, the technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, but not all the embodiments of the present application. The description of the at least one exemplary embodiment is actually only illustrative, but not as any limitation on the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0024] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0025] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium, or the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0026] In the description of the present application, it should be noted that the terms used herein are only for the purpose of describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is intended to include the plural form, and in addition, it should be understood that when the terms "comprise" and / or "include" are used in the specification, it means that the features, steps, operations, devices, components and / or their combinations are present.

[0027] The relative arrangement of parts and steps, numerical expressions, and numerical values set forth in the examples are not intended to limit the scope of the present application unless specifically stated otherwise. Also, it should be apparent that the dimensions of the various parts shown in the drawings are not drawn to scale for ease of illustration. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art can not be discussed in detail, but should be considered part of the specification as appropriate. In all examples shown and discussed herein, any specific value should be interpreted as merely an example and not as a limitation. Thus, other examples of the exemplary embodiments can have different values. It should be noted that like reference numerals and letters refer to like items in the several views of the drawings, and thus, once an item is defined in one view, it need not be discussed further in subsequent views.

[0028] In addition, it should be noted that the use of the terms "first", "second", etc. to describe various components is merely intended to differentiate one component from another, and does not have a special meaning unless otherwise stated. Therefore, it should not be understood as limiting the scope of protection of the present application.

[0029] As shown in Figures 1-4 A device for maintaining the converter tapping hole brick, comprising a bucket 1, a crossbeam 2, a connecting rod 3 and a fixing piece 4.

[0030] The bucket 1 is a hollow conical bucket without a top and a bottom, the inner diameter of the top end is larger than that of the bottom end, and the outer diameter of the bottom end is smaller than the inner diameter of the tapping hole, so that the bucket 1 can be inserted into the tapping hole.

[0031] In this embodiment, the bucket 1 is an iron bucket with a thickness of 3mm, the inner diameter of the top end of the bucket is 200mm, the inner diameter of the bottom end of the bucket is 160mm, and the inner diameter of the tapping hole is 180-200mm, so that the conical bucket can be conveniently inserted into the tapping hole. The height of the bucket is more than 800mm, which can ensure that the center of gravity of the conical bucket is inside the tapping hole, avoiding falling due to self-weight when the furnace is tilted.

[0032] The crossbeam 2 is fixedly connected to the top end surface of the bucket, and the crossbeam 2 is cross-shaped and parallel to the top end surface of the bucket.

[0033] The connecting rod 3 is a cylindrical rod corresponding to the slag stopping trolley, the length of the connecting rod is 200mm, and the diameter is ø20mm. The bottom end of the connecting rod 3 is fixedly connected to the center of the crossbeam 2 vertically, the connecting rod 3 is perpendicular to the top end surface of the bucket, and the connecting rod 3 has the same axis as the bucket 1.

[0034] The fixing member 4 is a cylindrical rod, and the diameter of the fixing member is 20mm, and the length is 40mm. The fixing member 4 is four, and is uniformly distributed on the outer wall of the barrel, that is, the included angle between adjacent fixing members is 90 degrees. The fixing member 4 is perpendicular to the axis of the barrel and parallel to the top end surface of the barrel. The four fixing members 4 uniformly distributed on the circumference facilitate the barrel 1 to be inserted into the tundish.

[0035] The distance between the fixing member 4 and the top end surface of the barrel is more than 200mm. The barrel 1 can be ensured to be higher than the tundish by 200mm, so as to avoid that the tundish is filled with the self-flowing material.

[0036] The outer part of the fixing member 4 is wrapped with a refractory material layer 5, and the refractory material layer 5 is made of refractory mud.

[0037] The working principle and working process of the utility model are as follows:

[0038] 1, after the converter finishes steel, the slag is poured out, and the slag blocking marker vehicle clamping connecting rod 3 is used.

[0039] 2, the converter shakes the furnace to the tundish side-90 degrees, the slag blocking marker vehicle is opened to the tundish adding marker position, and the barrel 1 is vertically inserted into the tundish and fixed.

[0040] 3, using 1 to slowly shake the furnace to the charging side 55 degrees, using the scrap steel tank to pour 300kg self-flowing material into the furnace.

[0041] 4, the fourth stop quickly shakes the furnace to the tundish side, and when it is shaken to-75 degrees, it is reduced to 1 to slowly shake the furnace, until the self-flowing material flows in the tundish.

[0042] 5, after sintering for 15 minutes, after observing that the self-flowing material in the furnace is burned through and smokeless, the converter is normally produced.

[0043] The utility model simplifies the maintenance process of the tundish, and the converter does not need to take multiple manual maintenance, reduces the labor intensity, and achieves the maintenance effect. After the self-flowing material flows, the tundish is flat, the tundish mixing slag and the incomplete molten steel phenomenon are eliminated, and the steel quality is improved. The utility model is safe and reliable, the tundish is effectively maintained, the service life of the tundish is improved, the safety of the converter lining is ensured, the economic furnace age of the converter is improved, and the production capacity of the converter is expanded.

[0044] The protection scope of the utility model is not limited to this, any person skilled in the art in the technical range disclosed by the utility model, according to the technical scheme and the utility model concept of the utility model, equivalent replacement or change, should be covered in the protection scope of the utility model.

Claims

1. A device for maintaining the converter taphole brick, characterized in that: it comprises a bucket, a crossbeam, a connecting rod and a fixing member; the bucket is a hollow conical bucket without top and bottom, the inner diameter of the top end is larger than that of the bottom end, the outer diameter of the bottom end is smaller than the inner diameter of the taphole, and the bucket can be inserted into the taphole; the crossbeam is fixed to the top end surface of the bucket, and the connecting rod is fixed vertically to the crossbeam, and the connecting rod is perpendicular to the top end surface of the bucket; a plurality of fixing members are symmetrically fixed to the outer wall of the bucket.

2. The device for maintaining the converter taphole brick according to claim 1, characterized in that: the inner diameter of the top end of the bucket is 200 mm, the inner diameter of the bottom end of the bucket is 160 mm, the inner diameter of the taphole is 180-200 mm, and the height of the bucket is more than 800 mm.

3. The device for maintaining the converter taphole brick according to claim 1, characterized in that: the crossbeam is cross-shaped, and the crossbeam is parallel to the top end surface of the bucket.

4. The device for maintaining the converter taphole brick according to claim 1, characterized in that: the connecting rod is a cylindrical rod corresponding to the slag marker car.

5. The device for maintaining the converter taphole brick according to claim 1, characterized in that: the fixing member is a cylindrical rod.

6. The device for maintaining the converter taphole brick according to claim 1, characterized in that: there are four fixing members, which are uniformly distributed on the outer wall of the bucket, i.e. the included angle between adjacent fixing members is 90 degrees.

7. The device for maintaining the converter taphole brick according to claim 1, characterized in that: the distance between the fixing member and the top end surface of the bucket is more than 200 mm.

8. The device for maintaining the converter taphole brick according to claim 1, characterized in that: it further comprises a refractory material layer, which is wrapped outside the fixing member.

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