JPS5844905Y2 - Removal device for continuous casting tundish lining insulation material - Google Patents

Description

[Detailed description of the invention] This invention is suitable for use as a lining insulation material for tanditshu used for continuous steel casting, or for fireproof insulation materials such as refractories (
The present invention relates to a device for removing a heat insulating material when replacing the heat insulating material (hereinafter abbreviated as "insulating material").

For example, in continuous casting of steel, molten steel in a ladle is once transferred to a tundish, and is injected from the tundish into a continuous casting mold, and a slab is obtained by primary and secondary cooling.

Conventionally, so-called casterful refractory bricks were used as the lining for tanditshu, but this required treatment to prevent the molten steel from solidifying by heating it for a considerable period of time before use, resulting in considerable costs. It takes.

In recent years, with the intention of reducing the heating time and heating costs mentioned above, the lining of the tanditshu, especially the part that comes into contact with the molten steel, has been made of a board with excellent heat insulation properties.
oard).

The continuous casting operation using the tundish lined with the above-mentioned heat insulating material is as follows.

First, this tundish is heated for a short time, placed in a predetermined position of continuous casting equipment, receives molten steel in a ladle, and starts casting.

The life of the heat-resistant material ends when the amount of ladle melting is approximately 5 to 6 times.

When replacing the heat-resistant material, tear off all the lining on the tanditsh, clean and remove it, and then line it with a new one.

The tundish lined with the new insulation material is used again as described above.

The above-mentioned breaking and cleaning of the lining insulation material is often carried out under high heat, generates dust, and must be carried out over the entire interior of the tundish, so mechanization of the work is strongly desired.

In view of the above-mentioned circumstances, the present invention provides a mechanized device for breaking and cleaning the lining insulation material of a tundish in a short period of time.

The present invention will be described in detail below based on embodiments shown in the drawings.

An embodiment of the present invention is shown in FIGS. 1 to 4.

In the figure, 1 is a self-propelled trolley. This cart 1 runs on a rail 3, straddling a pinto 2.

A plurality of tundishes 4 can be arranged in the pit 2 in the longitudinal direction.

5. This is the mounting stand for the bastard. Of course, as mentioned above, the tundish 4 disposed in the pit 2 requires the work of cleaning and removing the broken lining insulation material 6.

The above-mentioned truck 1 is provided with a shovel 8 which can be raised and lowered by an air cylinder 7.

As shown in FIG. 4, this shovel 8 can move up and down within the minimum height range a-b of the inner surface of the tundish 4, and is also rotatable in the vertical direction C about a fulcrum 9 as shown by the dotted line.

This rotation is provided by an air cylinder 10, and at this time the rod 11 expands and contracts.

Me, this shovel 8 can be moved forward, backward, left and right,
In the example shown in FIG. 4, the frame 12 to which the shovel 8 is attached is swingable back and forth (D-E) and left and right (F'-G).

This back and forth rocking is centered around the pin 27 of the bracket 13 attached to the frame 12 shown in FIG. 4, and the left and right rocking is centered around the support rod 29 of the bracket 28 that supports the pin 27.

In the figure, reference numeral 30 denotes a member that rotatably receives the support rod 29, and the member 30 is fixed to a frame 36 connected to a mounting frame 35 of the truck 1.

Incidentally, the above-mentioned front-rear, left-right and left-right swings are performed by cylinders, not shown, for example, for back-and-forth swings and left-right swings.

If the tundish lining insulation material 6 breaks, it is done using this shovel 8 (if the tundish 4 is at a high temperature, it is air-cooled and then water-cooled before being disassembled).

). At this time, the heat insulating material 6 is spread over the entire inner periphery of the tundish 4, which is fixed by appropriately combining the vertical rotational movement of the excavator 8 about the fulcrum 9, the back and forth and left and right rocking movements, and the running of the trolley 1. breakage is possible.

The breakage of the heat insulating material 6 on the side surface of the inner periphery of the tundish 4 is not at the side surface 8a of the shovel 8, but the breakage of the bottom surface zero thermal insulation material 6 and the reception of the broken pieces are at the rake opening 8b of the shovel 8.

The lining insulation material 6 broken by the shovel 8 is temporarily received through the scoop opening 8b of the shovel 8, and a basket 14 is provided close to the shovel 8 each time.
Pay it out and store it.

This discharging into the basket 14 is performed by swinging the shovel 8 in the forward direction (fourth drawing direction) and rotating it in the reverse E direction.

The fragments of the heat insulating material 6 discharged into the basket 14 are periodically discharged into a truck (not shown), for example, and the business is discontinued.

In this way, the shovel 8 serves both to break the heat insulating material 6 and to scoop up the broken pieces of the heat insulating material.

The remaining steel adhering to the lining insulation material 6 at the time of breakage is similarly discharged into the basket 14 by the operation of the shovel 8.

By this operation, the relatively large heat insulating material 6 and the remaining steel are removed, but it is difficult to clean and remove small pieces of the heat insulating material, powder, etc. caused by the breakage with the shovel 8.

In the present invention, a basket 14 is provided in the vicinity of the shovel 8, and by discharging the broken heat insulating material therein each time, as much as possible, the heat material of the shovel 8 is removed, and it is cleaned and removed by the operation of the shovel 8. Insulating material pieces, powder, etc. that are difficult to clean should be cleaned by suction.

In the example of the drawing, a suction duct 15 is provided on the trolley 1 in the vicinity of the shovel 8 so that it can move up and down (a-b) and move back and forth and left and right like the shovel 8. Specifically, as shown in FIG.
A bellows 31 is provided in the middle of 5, and the bellows 33 can be freely raised and lowered by a cylinder 32, and a bellows 33 is also provided, and this portion can swing freely back and forth (D-E) and left and right (FG).

2 shows a bracket for fixing the tube 15 of the T.34 cigarette to the frame (not shown) of the truck 1.

This suction duct 15 is connected via a pipe 16 to the separator 1γ.

This separator 17 is connected via a pipe 18 to a dust collector 19 .

As the dust collector 19, it is preferable to select a wet bung filter, considering that the inside of the tundish 4 may be cooled with water before work.

As shown by the dotted line in FIG. 4, the suction duct 15 can be moved up and down within the minimum height range of the inner circumference of the tundish 4.

Further, the dust collector 19 is connected to a fan 21 through a pipe 20, and is connected to a discharge pipe 22 which also serves as a muffler.

23 is a motor for driving the fan 21.

For suction cleaning of small pieces of insulation material, powder, etc. caused by fractures, the rotational movement of the suction duct 15 and the running of the trolley 10 may be combined or selected as appropriate, either in synchronization with the operation of the shovel 8 or independently. By doing so, all pieces of heat insulating material, powder, etc. are removed from the entire inner circumference of the stationary tundish 4.

At this time, the suction fan 21 is already in operation, and pieces of insulation material, powder, etc. are sucked out from the suction duct 15.

Among the sucked heat insulating material pieces, powder, etc., relatively large pieces of heat insulating material are first separated in a separator 17.

On the other hand, air containing powder etc. is sent to a dust collector 19, where the powder etc. are separated and removed.

The dust-removed air passes through a fan 21 and is radiated from a discharge pipe 22 which also serves as a muffler.

After the lining insulation material 6 has been broken and cleaned and removed in the manner described above, the tundish 4 is constructed by using a crane or the like (not shown) to force hooks (or wires) onto the hangers 24, and then the rows of pits 2. For example, transport it to a repair shop.

After that, a folded heat insulating material 6 is installed at the repair shop, the steel is preheated, and the steel is prepared for the next continuous casting operation.

When the heat insulating material layer, residual steel, etc. that are broken by the shovel 8 and collected in the basket 14 reach a predetermined capacity, they are disposed of appropriately.

The heat insulating material pieces, dust, etc. sucked from the suction duct 15 are discharged to a disposal site (not shown) at a predetermined position through the discharge port 25 of the collection container connected below the separator 17 and the discharge port 26 of the dust collector 19.

As explained in detail based on the above embodiments, the present invention removes the insulation material pieces that break with the shovel 8 from the tundish by itself, and removes the insulation material pieces that could not be removed with the shovel 8 and powder. etc., from the suction duct 15, and these mechanisms are mounted on the traveling trolley 1. In C), when removing the lining insulation material 6 of the tundish 4, the crushed insulation material layer is removed. Compared to the case of suction removal, the suction capacity is small and the time required for suction can be shortened and it is effective.Compared to all the mechanical removal work, the present invention can completely remove even one small piece. This makes it possible to economically perform complete cleaning of the tanditsu in its longitudinal direction without generating dust.

The inside of the insulation material is quite hot, but when it is removed with a shovel, this part comes to the surface and is cooled, so that it does not adversely affect the dust collector during suction.

As described above, the present invention can provide a mechanized device having the above-mentioned effects, and greatly contributes to continuous steel casting operations.

In addition, in the above description, an example in which the shovel 8 does not rotate in the horizontal direction has been described, but it may be freely rotatable in the horizontal direction.

Further, although the example of removing and cleaning the refractory insulation material of the lining of a tundish is shown, the present invention is also fully applicable to the case where the refractory material of ordinary castables is being removed and cleaned.

[Brief explanation of the drawing]

Figure 1 is a front view of the present invention - an embodiment, and Figure 2 is A of Figure 1.
FIG. 3 is a view from B in FIG. 1, and FIG. 4 is a partially enlarged detailed explanatory view of the present invention. 1...Self-propelled trolley, 2...Pinto, 3.
...Rail, 4...Tanditshu, 5
...Placement stand, 6...Insulation material, 7...
...Air cylinder 8...Shovel, 8
a... Side of shovel, 8 b... Immediate mouth of shovel, 9... Fulcrum, 10...
・Air cylinder 11... Rod, 12...
...Frame, 13...Bracket, 14...
... Basket, 15 ... Suction duct, 1
6...Tube, 1γ...Separator, 18...
... pipe, 19 ... dust collector, 20 ... pipe, 21 ... fan, 22 ... discharge port,
23...Motor 24...Hanging tool, 2
5.26...Discharge port, 21...Pin,
28... Bracket, 29... Support rod, 30... Support member, 31... Bellows, 32... Cylinder 33... ... Bellows, 34 ... Bracket, 35, 36 ...
····flame.

Claims (1)

[Scope of utility model registration request] The insulation material used as the lining of the continuous casting tundish,
For the removal device from the tanditsh, a shovel that can move up and down, and move back and forth as well as left and right, is installed on a trolley that straddles the movable tanditsh to break the insulation lining of the tanditsh and scoop out the broken insulation. A lining insulation material for a tundish for continuous casting, in which a basket containing the insulation material is provided close to the excavator, and a suction duct connected to the dust collector mounted on the above-mentioned truck is provided so as to be movable up and down, back and forth, and left and right. removal device.