JPS6010780Y2 - Insertion jig for filling material in ladle sliding nozzle - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an insertion jig for supplying a filling material to prevent clogging into a sliding nozzle of a ladle.

When using a ladle, in order to prevent the sliding nozzle from being blocked by molten metal, conventionally, when feeding the filling material to the sliding nozzle before pouring the molten metal into the ladle, a first As shown in the figure, a work tool 23 located on a workbench 22 provided on the side of the ladle 21 uses a long and narrow funnel-shaped pipe 24 to connect the ladle 21 to the ladle 21.
A granular filling material 26 such as refractory powder was dropped and supplied from above to the sliding nozzle 25 in the closed position.

However, in the conventional method, the work tool 23 must be exposed above the ladle 21 which has been preheated to a high temperature, and during the work, radiant heat from the red-hot refractory inside the ladle 21 is emitted. Therefore, there were various drawbacks such as not only poor workability but also danger.

The purpose of this invention is to eliminate the drawbacks of the above-mentioned conventional devices and to provide an insertion jig that allows a worker to safely supply filling material to a sliding nozzle from below the ladle. .

This invention will be explained with reference to embodiments shown in the drawings.

In Figures 2 to 4, 1 is a ladle, and 2 is a sliding nozzle, which consists of an upper nozzle 3 fixed to the ladle 1 and a lower nozzle 4 slidably attached to the upper nozzle 3. , 5 is a cylindrical filler, and a filler material 6 such as graphite, river sand, refractory powder granules, etc. is placed in a bag 7 made of flammable material such as paper or cloth and can pass through both the upper and lower nozzles 3 and 4. It is formed into a cylindrical shape with a diameter.

Reference numeral 8 denotes an insertion jig, which has a diameter that allows insertion into the lower nozzle 4, and a rod 9 having a male thread 9' formed in the middle part;
Adjustment plate 10 having a female thread 10' that screws into a male thread 9'
When the female screw 10' is inserted into the lower adjustment nozzle 4 and the adjustment plate 10 comes into contact with the lower end surface of the lower nozzle 4,
The substantially hemispherical upper end of the bar 9 reaches the height of the joining sliding surface 11 of both the upper and lower nozzles 3 and 4.

12 is a hydraulic cylinder. To supply the filling material, first, as shown in FIG. 2, the sliding nozzle 2 is placed in the open position and the waist-shaped filling material 5 is inserted into the lower nozzle 4 from below the ladle 1.

Next, the adjustment plate 10 is pushed up using the insertion jig 8 until it comes into contact with the lower end surface of the lower nozzle 4, and the cylindrical filler 5 is inserted into the upper nozzle 3.

The lower end of the pushed-up cylindrical filler 5 is located at the height of the joint sliding surface 11 of both the upper and lower nozzles 3 and 4, similar to the upper end of the insertion jig 8.

Next, when the lower nozzle 4 is slid using the hydraulic cylinder 12 while maintaining the height position of the insertion jig 8, the cylindrical filler 5 is held within the upper nozzle 3 as shown in FIG. Tama,
Only the insertion jig 8 is laterally displaced together with the lower nozzle 4.

At this time, since the upper end of the insertion jig 8 is rounded into a substantially hemispherical shape, sliding of the lower nozzle 4 is not obstructed.

After the sliding nozzle 2 reaches the closed position, the bag 7 burns due to the heat from the ladle 1 after insertion, and the cylindrical filling material 5 loses its cylindrical shape, as shown in FIG. is diffused and supplied into the upper nozzle 3.

The insertion jig of this invention inserts the cylindrical filler into the upper nozzle from the bottom of the sliding nozzle as described above, and because the worker works below the ladle, the material is removed from the red-hot refractory inside the ladle. It is possible to work safely without being exposed to radiant heat, and it is easy to supply the appropriate amount of filling material to reliably prevent nozzle clogging. Furthermore, when inserting the cylindrical filling material, the sliding nozzle It has excellent effects such as not damaging the sliding surface of the slider.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram of a conventional device, and FIGS. 2 to 4 are explanatory diagrams showing embodiments of the present invention. 1... Ladle, 2... Sliding nozzle, 3... Upper nozzle, 4... Lower nozzle, 5
...... Cylindrical filling material, 6 ...... Filling material, 7
... Bag, 8 ... Insertion jig, 9 ... Rod, 10 ... Adjustment plate, 11 ... Joint sliding surface.

Claims (1)

[Claims for Utility Model Registration] A rod having a diameter that can be inserted into the lower nozzle of a sliding nozzle; A cylindrical filler made of a filling material such as refractory granules is inserted into the upper nozzle of the open sliding nozzle through the lower nozzle. Insertion jig for filling material in ladle sliding nozzle.