JPS6130005B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a refractory pouring pipe used in a device for repairing the eroded portion of the refractory layer on the inner wall of a converter tap with refractory by coating it with refractory. .

[Conventional technology]

Conventionally, the injection pipe used in the repair equipment for the furnace tap has a spout hole at the tip of the pipe, as described in Japanese Patent Application Laid-Open No. 46-5703. Refractory is applied to the melted parts of the tap hole.

[Problem that the invention seeks to solve]

However, since the spouting hole is composed of a plurality of small-diameter, circular openings, the amount of spouting per revolution of the injection pipe, that is, the amount of work to be performed is small, and the injection pipe must be rotated many times while moving. Furthermore, since the construction is essentially done at points, there is no overlap in the construction surfaces, making it impossible to make the construction surfaces uniform.

The present invention increases the amount of work per rotation,
It is an object of the present invention to provide a refractory pouring pipe for a converter tap port repair device that can shorten construction time and make the construction surface uniform.

[Means for solving problems]

The present invention provides a refractory extrusion spout pipe for a converter tap port repair device that has a spout hole on the front circumferential side and is rotatably provided, in which the opening of the spout hole is oriented in the pipe axis direction. The above object is achieved by forming an elongated hole and arranging the same long hole at a plurality of locations in the circumferential direction of the pipe.

Hereinafter, means for solving the above problems will be specifically explained based on the embodiment shown in the attached drawings.

First Embodiment In the first embodiment shown in Figures 1, 2, 3, and 4, 1 is a refractory pouring pipe, 1a is a widened end thereof, 1b is a pouring hole, and 1c is a preformed refractory pouring pipe. Block A loading door, 2 is a running vehicle on which the refractory pouring pipe 1 is rotatably mounted, 2b is a wheel, 2c is a pipe support bearing, 2d is a rotation motor, 2e
2h is a rotation transmission gear, 2h is a chain, 2i is a sprocket wheel, 2j is a sprocket wheel drive motor, 3 is a moving machine frame incorporating a refractory pouring pipe and advance/retreat device 2, and 3a is a rail for wheels 2b. , 3b is a centering guide, 3c is a clamp magnet, 3d is a centering adjustment cylinder, 3
e is a spring, 3f is a wire, 3g is a running roller, 3h is a drive device for the same roller, 3i is an electric
Hydraulic system connector, 4, refractory extrusion device, 4a
is the extrusion cylinder of fireproof block A, 8 is the operation panel,
Reference numeral 9 indicates a centering guide tube attached to the tapping port C of the converter B.

FIG. 5 shows an example in which the advancing/retracting device 2 is changed to a hydraulic cylinder 2k instead of a chain drive.

In the above configuration, as shown in the figure, the spout hole 1
b extends in the axial direction of the refractory pouring pipe 1;
It is formed by elongated holes spaced apart in the circumferential direction.

With this configuration, when the extrusion cylinder 4a in the refractory pouring pipe 1 is advanced, the refractory is extruded with a constant width from the pouring hole 1 toward the melted point in the tap opening, The amount of construction per rotation can be increased, and construction time can be shortened. Furthermore, since the refractory pouring pipe 1 is rotated and reciprocated, the refractories poured out with a certain width can partially overlap with each other, and a uniform construction surface can be formed.

Further, FIG. 6 shows a modified example in which the refractory block A is easily inserted into the refractory pouring pipe 1, and the input door 1c is made rotatable with a screw thread. In this case as well, the pouring hole 1b is formed by a long hole.

7 to 10 show various structural examples of the tip of the refractory pouring pipe 1. FIG. 7 shows a structure in which the widened part 1a and spout hole 1b can rotate, and FIGS. In Figure 9, the tip of the refractory block A is screwed together and is removable, allowing the insertion tip of the refractory block A to be replaced. In addition, FIG. 10 shows a cooling chamber 1j provided inside the widened part 1a and a cooling water pipe 1k.
It has been established.

〔Effect of the invention〕

As described above, in the present invention, the spout hole provided at the tip of the refractory spout pipe is formed by a plurality of long holes extending in the axial direction of the refractory spout pipe. It is possible to increase the amount of construction per unit and shorten the construction time, and since the refractories to be installed can be overlapped, a uniform construction surface can be formed.

[Brief explanation of the drawing]

FIG. 1 is a side view of a converter tap repair device equipped with a refractory pouring pipe according to the present invention, FIG. 2 is a front view of the same device, and FIG. 3 is a front view showing the converter tap. , FIG. 4 is a perspective view showing a refractory pushing device, FIG. 5 is a perspective view showing another example of the advancing/retracting device, FIG. 6 is a partially cutaway side view showing another embodiment, and FIG. FIG. 10 is an explanatory diagram showing the structure of the tip of the refractory pouring pipe. A... Refractory block, B... Converter, C... Steel tap, 1... Refractory pouring pipe, 2... Advancement/retraction device,
3... Mobile machine frame, 4... Refractory extrusion device.

Claims (1)

[Claims] 1. A refractory extrusion pouring pipe for a converter tap port repair device that has a pouring hole on the front circumferential side and is rotatably provided, with the opening of the pouring hole extending in the axial direction of the pipe. A refractory pouring pipe for a converter tap port repair device, characterized in that an elongated long hole is formed and the same long hole is arranged at a plurality of locations in the circumferential direction of the pipe.