JPS6333945Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] The present invention provides a sealing refractory material to the upper end of a molten metal container, for example in the case of sealing a gap between a hot metal processing pot and a freeboard. The present invention relates to a device for administering.

[Conventional technology]

For example, in a method in which molten pig iron is once stored in a hot metal ladle and pre-treated for dephosphorization and desulfurization, such as in the case of stainless steel, intense bubbling causes overflow from the top of the hot metal pot. In order to prevent this, it is necessary to seal the gap between the freeboard and the container with a clay-like refractory material.

Conventionally, such a sealing material has been formed by manually filling the gap between the upper edge of the container and the freeboard with a clay-like refractory material carried up on a ladder or scaffolding.

[Problem that the invention attempts to solve]

This type of mortar filling is inefficient because it is done manually, and it takes time to cure the clay refractory after construction, which not only causes a decline in equipment capacity, but also requires work directly under the dust collection hood. Therefore, there is a risk of slag adhering to the hood and falling metal.
There were safety issues due to the work being carried out at high temperatures in close proximity to molten pig iron.

The present invention solves the above-mentioned problems when processing molten metal using a ladle, and aims to provide a device that can safely and reliably seal with clay-like refractories in a short time by remote control. purpose.

[Means for solving problems]

Hereinafter, the structure and operation of the present invention will be explained with reference to the accompanying drawings showing embodiments of the apparatus of the present invention.

The attached drawings show an example in which the apparatus of the present invention is applied to dephosphorization of molten pig iron. FIG. 1 is a side view showing the overall configuration of the present invention, and FIG. 2 is a plan view thereof.

In the figure, A indicates a molten pig iron ladle running on a rail B. C is the free board of the dust collection duct. When refining the molten pig iron D housed in the molten pig iron ladle A, such as dephosphorization treatment, the free board C is lowered to form a gap between the upper edge surface E of the molten pig iron ladle A and the free board C. is closed through a seal F formed of refractory mortar, and then the lance G is lowered to supply the refining agent into the hot metal D.

The present invention is an apparatus for constructing a seal using a clay-like refractory formed on the upper edge surface E of the hot metal ladle A.

The sealing material application device according to the present invention includes a supply section 1 for clay-like refractory sealing material, a pressure feeding line 2 for transferring the sealing material, and a sealing material attached to the tip thereof and fed by the pressure feeding line 2. It is comprised of a discharge pipe 3 for supplying hot metal to the upper edge surface E of the hot metal ladle A to form a seal F.

The sealing material supply section 1 includes, for example, a hopper 11
and a screw feeder 13 driven by a motor 12, and the pressure feeding line 2 consists of a flexible tube 2
3 and a second delivery pipe section 22 attached to a cantilever beam (arm) 4 configured to be movable back and forth and up and down.

The cantilever beam 4 is the upper and lower beams 5 of the vertical beam 5 of the building.
The motor 6 together with the shaft 6 installed between 1 and 52
The guide wheel 41 attached to the end of the cantilever is set on a coaxially formed elevating guide 62, and can be moved up and down by the expansion and contraction of the elevating cylinder 42. It is assembled in.

The second delivery pipe section 22, which is movably attached to the cantilever beam 4 by means of a movable wheel 43, moves over the cantilever beam 4 by driving a forward and backward movement cylinder 44 installed on the cantilever beam 4. Move forward and backward.

The discharge pipe 3 is attached to the distal end of the second delivery pipe section 22 via a rotary joint 31 so as to be freely rotatable around the joint 31 .

Reference numeral 32 indicates a motor for rotating the rotary joint 31.

The output shaft of the motor 32 and the pulley 35a are connected at both ends to a spline shaft 33 via universal joints 33a and 33b, which can accommodate variations in the distance between them due to the rotation of the arm 4 that supports the pulley 35a. The motor 3 is then connected.
2 rotation is from the spline shaft 33 to the transmission cable 34.
Pulleys 35a, 3 with tensions a, 34b, 34c
5b, 35c, the rotary joint 31 is rotated,
Accordingly, the discharge pipe 3 can be rotated to any angle.

The rotation of the discharge pipe 3 is caused by the rotation of the second delivery pipe section 22.
This can be done at will, regardless of whether it moves forward or backward.

FIG. 2 shows the mechanism for this purpose.

In the same figure, a first pulley 35a supported by the arm 4 and a second pulley 35a supported by the second delivery pipe section 22 are shown.
Between the pulley 35b and the pulley 35b, two swingable rolls 36a-2, 36b-2 are mounted via the rolls 36a-1, 36b-1 supported on the arm 4 and springs 36c, 36d. These pulleys 35a, 35b are provided in stages.
and step rolls 36b-1, 36b-2, 36
A cable 34a is stretched between the cables 36a-2 and 36a-1.

Therefore, the spring 36 is prevented from changing the position of the discharge pipe 3 due to the expansion/contraction drive of the forward/reverse cylinder 44.
Roll 36a- attached via c, 36d
The length of the transmission cable 34a is automatically adjusted by changing the mutual spacing between the transmission cables 2 and 36b-2.

The rotation of the pulley 35b is further controlled by the cable 34b stretched between the pulley 35b and the pulley 35c supported by the second delivery pipe section 22, and the rotation of the pulley 35b and the distal end of the second delivery pipe section 22 is further controlled. Rotating joint 3
1 is transmitted to the discharge pipe 3 by the cable 34c stretched between the cable 34c and the cable 34c, so that rotation work can be performed without any trouble at all times.

In this way, the position of the tip nozzle of the discharge pipe 3 is
In order to apply sealing material to containers of any size and shape, it is configured to be able to move up and down, move forward and backward, and rotate.Furthermore, each of the drive cylinders and motors mentioned above are driven by a pendant system. As a result, remote control is now possible.

[Effect]

FIG. 3 shows a state in which a sealing material is applied using the apparatus of the present invention.

After transferring the ladle A containing the molten pig iron to the processing position, the operating arm 4 in the standby position indicated by the dotted line is operated by remote control by the operator M to operate the rotary motor and the forward/backward cylinder. , install the rotary joint of the discharge pipe at the center of pot A. Next, the sealing material supply motor is operated to send the sealing material to the pressure feeding line, and the discharge pipe turning motor is driven to move the discharge pipe along the upper surface of the periphery of the pot A, forming a sealing layer F of refractory material. After the sealing layer F is formed on the entire upper surface of the periphery, the material supply is stopped, and the arm is rotated to the position shown by the dotted line to retreat from the freeboard lowered position shown in FIG.

[Effect of idea]

Forming a seal on the upper edge of a molten metal container, which was conventionally done mostly by hand, can be done safely by remote control of the device of this invention by an extremely small number of workers, regardless of the capacity. In addition, it is efficient because the installed refractory can be cured while the arm is rotating, and it is also possible to mechanically feed clay refractories of any configuration, ensuring reliable sealing. can be formed.

[Brief explanation of the drawing]

The accompanying drawings show aspects of the device of the present invention, with FIG. 1 showing the overall configuration, and FIG. 2 showing an example of a rotational drive mechanism for the discharge pipe. FIG. 3 is a diagram showing the operating state of the device of the present invention. 1: Seal material supply section, 11: Hopper, 12:
Feeder driving motor, 13: Screw feeder, 2: Pressure feeding line, 21: First delivery pipe section, 2
2: second delivery pipe section, 23: flexible pipe, 3: discharge pipe,
31: Rotary joint, 32: Rotary joint drive motor, 3
3: Spline shaft, 34a, 34b, 34c: Transmission cable, 35a, 35b, 35c: Pulley, 4:
Arm, 41: Guide wheel, 42: Lifting cylinder, 4
3: Moving wheel, 44: Forward and backward movement cylinder, 5: Vertical beam, 51, 52: Up and down beam, 6: Rotation axis, 61:
Rotary drive motor, 62: Lifting guide.

Claims (1)

[Scope of utility model registration request] A supply section 1 for clay-like refractory sealing material, a pressure feeding line 2 connected to the supply section 1 and movable back and forth on an arm attached to a rotating shaft placed outside the container so as to be able to move up and down; A device for applying a sealing material to the upper edge of a molten metal container, comprising a discharge pipe 3 rotatably connected to the tip of a pressure feed line 2 around the tip.