JP2007154215A - Burner apparatus for drying ladle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a burner apparatus for drying the inner part of a molten iron ladle and a molten steel ladle, after performing lining change or repairing of a heat-resistant brick in the inner part of the molten iron ladle and the molten steel ladle used for iron-making and steelmaking factories. <P>SOLUTION: The burner apparatus is provided with a burner, a burner arm, a link arm, a perpendicular pillar connected with the burner arm and a rack for holding the perpendicular pillar and connected to the link arm. The one end part of the burner arm is connected to the perpendicular pillar through a universal joint, and at the other end part thereof, the burner is fitted and the burner is hung down from the perpendicular pillar with a wire for hanging down. The one end part of the link arm is connected to the end part side fitting the burner arm through a universal joint so as to connect to the burner arm from diagonally lower part under state of using the burner and the other end part is connected to the rack through a universal joint. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  TECHNICAL FIELD The present invention relates to a burner device for drying a hot metal ladle / molten steel pan inside after replacing or repairing a hot metal brick / heat resistant brick used in a steelmaking factory.

  In the steelmaking and steelmaking factories, hot metal ladle and molten steel pan (hereinafter referred to as ladle) for transporting hot metal and molten steel have heat-resistant bricks pasted in the pan to protect the iron skin of the pan. Although heat-resistant bricks are periodically re-installed, if they are used with moisture remaining inside, when they come into contact with hot metal or molten steel, the water will rapidly expand and explode. It is necessary to heat and dry.

  Patent Document 1 relates to a drying preheating method for a vacuum degassing tank using a lance burner, and selects an optimum one from preheating patterns in which the lance burner position and the combustion amount are set according to the state of the refractory in the tank to be dried and preheated. It is described that the inside of the tank is kept uniformly and at a high temperature.

Patent Document 2 relates to a method for drying a refractory lined on a ladle, by attaching a large and small oil burner on the outer peripheral side surface of the lid of the ladle so as to face each other, and providing a stirring blade on the ceiling portion. It describes that a swirling flow appears inside the pan and the refractory lined is dried evenly.
JP-A-7-268443 JP-A-10-139557

  By the way, when repairing a ladle at a steelmaking or steelmaking factory, it is necessary to remove the lid with a crane because of the work of replacing the refractory inside the ladle at the repair site and the drying operation after the replacement. Later, crane work is required to return the ladle to its original working position in the factory.

  Therefore, in order to dry the refractory after repair, the drying device that heats the inside of the ladle needs not to be an obstacle when the lid is removed or moved by the crane. There is no description, and in particular, the apparatus described in Patent Document 2 requires a separate lid for drying work, and requires a large storage space and detachment work, which imposes a heavy operational burden.

  Therefore, an object of the present invention is to provide a ladle drying burner device that has a simple structure and that does not hinder crane work during repair work or subsequent ladle movement.

The object of the present invention can be achieved by the following means.

1. A pedestal having a vertical column and another arm that is connected to the vertical column via a universal joint, and has one arm attached to the tip of the movable body, the one arm, and another arm that is connected to the gantry via a universal joint. The movable body is suspended from the vertical column by a suspension wire, and the other arm is pivoted and lifted as the suspension wire is wound up. A swiveling / lifting device characterized in that it is connected to the mount via a universal joint from obliquely below the one arm so as to move up and down.
2. A ladle drying burner apparatus comprising a burner, a burner arm, a link arm, a vertical column to which the burner arm is coupled, and a vertical column to which the link arm is coupled, the ladle drying burner device comprising: One end is connected to the vertical column via a universal joint, the other end is attached to the burner, the burner is suspended from the vertical column by a suspension wire, and the link arm is in a state of use of the burner. One end of the burner arm is connected to the end of the burner arm attached to the burner arm via a universal joint, and the other end is connected to the gantry via a universal joint so that the burner arm is connected obliquely from below. A ladle drying burner device characterized in that
3. 3. The ladle drying burner apparatus according to claim 2, wherein the burner arm and the link arm are mounted on a gantry at a mounting position on a horizontal plane at a right angle across the axis of the vertical axis when the burner is in use.

  In the present invention, the movement of the burner to the pan lid and the lifting and retreating from the pan lid after the drying operation are performed by a link mechanism in which the burner arm and the link arm are connected, so a cyclo reducer and its control device are unnecessary. Equipment costs and operating costs can be reduced.

  In addition, the installation work for attaching the burner to the pan lid before the work is completed in a short time, the work efficiency is improved, and it is extremely useful industrially.

Hereinafter, the present invention will be described in detail with reference to the drawings.
FIG. 1 is a schematic external view showing a configuration of a burner drying apparatus according to an embodiment of the present invention, where (a) is a side view, (b) is a top view of the main part, and (c) is a front view of the main part. The figure is shown. In the figure, 1 is a burner drying apparatus, 2 is a vertical column, 3 is a burner arm, 3 is a burner, 4 and 4a are burners, 5 and 5a are hanging wires, 6 is a link arm, 7 is a pulley, and 8 is perpendicular to the burner arm 3. A joint member constituting a universal joint for connecting the column 2, 9 holds the vertical column 2, and a pedestal 10 to which the link arm 6 is connected via a universal joint (not shown), 10 indicates a ladle.
Reference numeral 21 denotes a bracket that supports a universal joint that connects the burner arm 3 and the vertical column 2, 22 is a pulley support portion that suspends the pulley 7, 91 is a holding member that holds the vertical column 2 in the frame 9, and 92 is a frame 9. A support portion 93 of the link arm 3 in FIG.

  Symbol A indicates a mounting portion between the vertical column 2 and the burner arm 3, symbol B indicates a mounting portion between the burner arm 3 and the link arm 6, and symbol C indicates a mounting portion between the link arm 6 and the gantry 9. The structure and cross-sectional shape of the vertical column 2 are not particularly defined, but a hollow rectangular column is preferable because it is easy to mount a bracket or the like.

  The illustrated burner drying apparatus 1 includes a vertical column 2, a gantry 9 that holds the vertical column 2 with a holding member 91, and a link mechanism that moves the burner 4 up and down.

  In the link mechanism, the burner 4 is attached to one end, the other end is attached to the vertical column 2, the link arm 6 connecting the burner arm 3 and the gantry 9, and a part of the vertical column 2. The burner arm 3 is composed of a part from the mounting part A to the base part 93 to the gantry 9 and a part of the gantry 9 and a part from the base part 93 to the support part 92 of the link arm 6. The The burner arm 3 and the link arm 6 are fixed lengths.

  In the link mechanism described above, the link arm 6 dries the burner 4 inside the ladle 10, so that the link arm 6 is attached to the gantry 9 so as to be obliquely below the burner arm 3 in the state where the burner 10 is mounted. It is supported by the provided support part 92 (FIGS. 1B and 1C).

  The burner 4 is suspended from the vertical pillar 2 by a suspension wire 5. When the burner 4 is raised after the drying operation in the ladle, the suspension wire 5 is wound up by a winder (not shown) through the pulley 7 supported by the pulley support portion 22 of the vertical column 2.

  The burner arm 3 tries to tilt upward in the vertical plane with the mounting portion A as a fulcrum, and at the same time, the link arm 6 also has the support portion 92 of the gantry 9 which is obliquely downward with respect to the burner 4 as a fulcrum. It tries to tilt upward as it moves.

However, since the length of the link arm 6 is constant, the burner arm 3 is swung in the direction of arrow a, and the burner 4 attached to the tip of the burner arm 3 is set at a set position for drying work in the pan. It is possible to raise (rise angle θ ₁ ) and turn (turn angle θ ₂ ) from a certain winding start position.

  In order to enable such movement of the burner arm 3 and the link arm 6, the attachment portions A, B, and C are universal joints. In the present invention, the structure of the universal joint is not particularly defined. 2A and 2B are schematic views showing an example of the structure of the attachment portion A, where FIG. 2A is a side view, FIG. 2B is a front view, and FIG. 2C is a top view.

  In the figure, the same reference numerals as those in FIG. The tip 31 of the burner arm 3 is connected to the joint member 8 by a connecting pin 14 and is rotatable in the vertical direction.

  The upper and lower sides of the joint member 8 are supported by the bracket 21 of the vertical column 2 so as to be rotatable in the horizontal direction, and a universal joint in which the burner arm 3 can rotate in the vertical and horizontal directions with respect to the vertical column 2 is configured.

  FIG. 3 is a diagram illustrating an example of the structure of the attachment portion B, in which the same reference numerals as those in FIG. 1 denote the same components. The hook 12 attached near the tip of the burner arm 3 and the tip 61 of the link arm 6 are connected by a chain 13.

FIG. 4 is a view showing an example of the structure of the attachment portion C. In the figure, the same reference numerals as those in FIG. The distal end portion 62 of the link arm 6 on the gantry 9 side and the support portion 92 of the gantry 9 are drilled and connected by the chain 13.
In the present invention, the dimensions of the members constituting the link mechanism described above may be selected as appropriate so that the burner arm is retracted to the gantry side and does not disturb the crane work when the burner is attached or detached.

  Since the link mechanism described above operates when the burner arm 3 is pulled upward with the attachment portion A as a fulcrum, the hanging wire 5 may be attached to the burner arm 3. However, the winding force decreases as the attachment position of the suspending wire 5 is set to the tip of the burner arm 3 and is preferably attached to the burner 4.

  In addition, in the burner drying apparatus according to the present invention, the burner movement accompanying the winding of the suspension wire is determined as follows. When the attachment position of the link arm in the burner arm is constant, the attachment height of the burner arm in the vertical column (the attachment position from the horizontal plane) And the distance between the support portion 92 on the gantry 9 and the base portion 93 of the vertical column 2.

Further, in a normal operation, the turning angle (angle θ ₂ ) is 90 degrees and the rising angle (angle θ ₁ ) is 80 degrees from the position when the burner 4 is dried in the ladle (with the ladle attached). It is preferable to select the link mechanism so that

For example, when the turning angle (angle θ ₂ ) is 90 degrees, the link mechanism is schematically shown in FIG. 6, and it is possible to obtain the position of the burner when the hanging wire that suspends the burner is wound up. .

  FIG. 5 is a development view of the link mechanism shown in FIG. 1. In FIG. 5, A, B, and C show the attachment part A, attachment part B, and attachment part C in FIG. 1, and D shows the support of the link arm 6 in FIG. 1 is the distance between the perpendicular line from the part 92 and the horizontal line from the attachment part A, E is the turning stop position of the attachment part B, which approximates the turning stop position of the tip of the burner in FIG. 1 represents the horizontal direction of the distance from the base portion 93 of the vertical pillar 2 to the mounting portion B in 1, and z represents the distance from the support portion 92 to D (the distance in the vertical direction when ascending).

  Further, a is the length of the burner arm 3 in FIG. 1 and the distance from the mounting portion A to the mounting portion B, b is the linear distance from the mounting portion A to the mounting portion B in FIG. 1, and c is the link arm 6 in FIG. The angle θ is an inclination angle of 80 degrees from the horizontal when the burner arm 3 is swung upward, and β is the angle from the vertical direction when the burner arm 3 is swung upward (vertical column 2 So θ + β is 90 °).

In FIG. 5, the position (x, θ) after the ascending turning of the burner 4 represented as the attachment part B of the burner arm 3 is x = z × a / √ (y ² + z ² ), sin β = z / b. It is obtained as θ = 90 ° −β.

In the example of the present invention, (a) is a side view, (b) is a front view, and (c) is a top view. FIG. 2A is a side view, FIG. 2B is a front view, and FIG. 3C is a top view illustrating a structure of a universal joint in the example of the present invention in FIG. 1. The figure explaining the structure of the universal joint in the example of this invention of FIG. The figure explaining the structure of the universal joint in the example of this invention of FIG. The figure explaining the structure of the link mechanism which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Burner drying apparatus 2 Vertical pillar 3, 3a Burner arm 4, 4a Burner 5, 5a Hanging wire 6 Link arm 7 Pulley 8 Joint member 9 Base 10 Ladle 12 Hook 13 Chain 14 Connecting pin 21 Bracket 22 Pulley support part 91 Holding Member 92 Support part 93 Foundation part

Claims (3)

  A pedestal having a vertical column and another arm that is connected to the vertical column via a universal joint, and has one arm attached to the tip of the movable body, the one arm, and another arm that is connected to the gantry via a universal joint. The movable body is suspended from the vertical column by a suspension wire, and the other arm is pivoted and lifted as the suspension wire is wound up. A swiveling / lifting device characterized in that it is connected to the mount via a universal joint from obliquely below the one arm so as to move up and down.   A ladle drying burner apparatus comprising a burner, a burner arm, a link arm, a vertical column to which the burner arm is coupled, and a vertical column to which the link arm is coupled, the ladle drying burner device comprising: One end is connected to the vertical column via a universal joint, the other end is attached to the burner, the burner is suspended from the vertical column by a suspension wire, and the link arm is in a state of use of the burner. One end of the burner arm is connected to the end of the burner arm attached to the burner arm via a universal joint, and the other end is connected to the gantry via a universal joint so that the burner arm is connected obliquely from below. A ladle drying burner device characterized in that 3. The ladle drying burner according to claim 2, wherein the burner arm and the link arm are mounted at a mounting position on a horizontal plane that is perpendicular to the axis of the vertical axis when the burner is in use. apparatus.

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