JPH086240Y2 - Portable stirring device for molten metal - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable stirrer useful for stirring molten metal, especially aluminum melt.

[0002]

2. Description of the Related Art As an apparatus of a type in which a stirring tube is inserted into molten metal and is stirred by a suction or blowing operation, a stirring tube is fixed to the upper part of a furnace wall in an angle range of 25 to 60 ° (FIG. 3, FIG. JP-A-52-153802), a structure in which a rising pipe is connected to an opening provided in a lower portion of a furnace wall (Fig. 4, JP-A-58-185730), and the like are known.

However, all of these devices have a drawback that they cause various troubles in the operation process because the stirring tubes are fixed. That is, in the case of the structure shown in FIG. 3, when the solid metal material for melting is charged into the furnace 1, the tip portion of the stirring tube 2 is damaged due to a collision, an impact, etc. There is a problem that the high-speed heat flow directly hits the pipe and deteriorates it, and the pipe inserted in the furnace interferes with the operation, and the efficiency of the sludge collection operation is reduced. Further, in the structure shown in FIG. 4, there is a problem that slag is accumulated at the entrance of the opening 4 by repeated tapping, and finally the opening is closed and the operation of the furnace is stopped.

In order to eliminate the drawbacks of the fixed tube system, the present inventors have already inserted the stirring tube 2 into the insertion port 5 provided in the side wall of the furnace as shown in FIG. A stirrer having a mechanism for inclining the stirrer pipe to immerse the tip into the molten metal 3 (No. Sho 63-95099), and to the slanted insertion port 5 provided in the furnace wall as shown in FIG. After tilting the stirring tube 2, the stirring device having a mechanism of inserting the stirring tube 2 through an inserting means 7 for moving the stirring tube in the longitudinal direction (Japanese Patent Application No. 1-32).
No. 5481), and a portable stirrer having a structure in which the distal end portion of the stirrer tube 2 is provided with a degree of freedom of movable expansion and contraction and the entire device can be easily moved in position (Fig. 7, Japanese Patent Application No. 2-4206).
No. 4) was proposed.

[0005]

According to these agitating devices according to the prior art, since the agitating pipe has a detachable structure, for example, at the stage of charging of solid metal material, or gathering, slag removing work, etc. Can be removed outside. Therefore, the stirring tube is not damaged, and the work efficiency of removing slag can be significantly improved.

However, the agitators shown in FIGS. 5 and 6 are structural types that are always fixedly installed in the vicinity of the furnace. Therefore, in a factory having a plurality of melting furnaces, the same number of agitators as the furnaces are installed. However, there is a problem in that it causes a large loss in terms of cost, space and operating rate.

Since the structure type shown in FIG. 7 can easily move the entire apparatus, it is possible to support a plurality of melting furnaces, but each melting furnace of the melting factory is sequentially repaired or demolished. Since it will be newly installed later, the shape and dimensions of the melting furnace will gradually change to the latest one,
In each melting furnace, the height (H) from the lower end of the insertion hole provided in the melting furnace wall to the work floor surface and the height (h) from the lower end of the insertion hole to the melting furnace bottom are different, When designing a portable stirring device for metals, it was necessary to design for each melting furnace.

An object of the present invention is to provide a portable stirrer for molten metal that does not need to be redesigned even if the shapes and dimensions of a plurality of target melting furnaces change.

[0009]

In order to achieve the above object, a portable molten metal stirring apparatus according to the present invention is provided with a shaft supporting member at the base end side of the stirring tube and moves the stirring tube in the longitudinal direction. A longitudinal position adjusting mechanism for supporting the tip end of the stirring tube so as to be movable upward through a freely supporting supporting roll and for moving the shaft supporting member forward and backward along the longitudinal direction of the stirring tube. A stirring tube supporting means, a base for cantilevering the stirring tube supporting means, and a tilting mechanism means for tilting the stirring tube supporting means between the base and the stirring tube supporting means,
Further, a vertical position adjusting means for vertically moving the base is provided below the base, which is a structural feature.

[0010]

The vertical position adjusting means is located under the base and adjusts the height between them. The vertical position adjusting means is composed of a telescopic device such as a hydraulic jack, a manual jack or an electric motor, and supports the base and the stirring tube. By pushing up the means, it functions to hold the stirring tube at a predetermined height.

The longitudinal position adjusting mechanism is composed of a telescopic device such as a chain driven by a reversible motor.
This tip supports a shaft supporting member that cantilevers the base end side of the stirring tube, and has a function of moving the stirring tube forward and backward along the longitudinal direction of the stirring tube.

The tilting mechanism is inserted between the base and the stirring tube supporting means, and preferably uses an electric cylinder to rotate and tilt around the shaft supporting portion of the stirring tube supporting means.

The portable stirring apparatus for molten metal according to the present invention tilts after advancing the stirring tube through the means and mechanism having the above-mentioned three functions and inserting it into the melting furnace. A function of tilting the stirring tube and then inserting it into the melting furnace is added.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the illustrated embodiments. FIG. 1 is a side sectional view showing a portable stirring device for molten metal for advancing and retracting a stirring pipe according to the present invention by a chain drive, and FIG. 2 is a portable stirring device for moving molten metal for advancing and retracting the stirring pipe with a scroll screw. It is a sectional side view which showed the apparatus. In these figures, 2 is a stirring tube, 8 is a tilting mechanism means, 9 is a tilting support frame, 10 is a longitudinal position adjusting means, 11 is a base, and 12 is a vertical position adjusting means.

The mechanism of the longitudinal position adjusting means 10 is shown in FIG.
2 has a structure in which the chain is driven to move forward and backward, and in FIG. 2, it has a screwing structure by rotating the handle. However, the structure is not limited to these structures, and an electric system or the like can be adopted.

The stirring tube 2 is a long tubular member having a tip end portion having a length sufficient to be immersed in the molten metal in the furnace, and is placed on the receiving and supporting roll 13 installed on the inclined support frame 9. In this state, the base end side is pivotally supported by a cantilever support point 14, and the base end is connected to a suction unit (not shown) via a bellows tube. The shaft supporting portion at the cantilever support point 14 is engaged with the longitudinal position adjusting means 10 of the mechanism that moves forward and backward along the longitudinal direction of the stirring tube 2.

The tilting mechanism means 8 is composed of, for example, a telescopic device such as an electric cylinder, and by pushing up a tilting support frame 9 connected thereto, a fulcrum 15 is formed.
The support frame rotates around the center of the axis to tilt the stirring tube 2 at a predetermined angle.

When the tilting mechanism means 8 is actuated to tilt the stirring tube 2 from the solid line state in FIG.
Further, in order to insert the tip portion of the inclined stirring tube 2 into the furnace, the stirring tube is moved forward by the reciprocating drive mechanism of the chain. The stirring tube 2 is inserted into the molten metal from the insertion opening of the furnace wall at a constant inclination angle, but even when slag or the like adheres to the hearth, the stirring tube 2 rotates about the cantilevered support point 14 to stir it. The tip of the tube 2 moves naturally to avoid a firm abutment.

After the stirring operation of repeated suction and discharge by the stirring tube 2 is completed, the stirring tube 2 is driven by the reciprocating drive mechanism of the chain.
Is pulled out from the furnace, and the next operation is started.

[0020]

As described above, according to the present invention, in addition to the mechanism for inserting the stirring tube into the furnace through the tilting mechanism, the stirring tube is provided with an operating mechanism that can be adjusted in the vertical direction, so that stirring can be performed. Even if the shape and dimensions of the target melting furnace change, the molten metal can be stirred with one facility, which is an industrially useful idea.

[Brief description of drawings]

FIG. 1 is a side sectional view of a portable stirrer showing an embodiment of the present invention.

FIG. 2 is a side sectional view of a portable stirring device according to another embodiment of the present invention.

FIG. 3 is a side sectional view showing a stirrer for molten metal according to a conventional structure.

FIG. 4 is a side sectional view showing a stirrer for molten metal according to a conventional structure.

FIG. 5 is a side sectional view showing a stirrer for molten metal according to a conventional structure.

FIG. 6 is a side sectional view showing a molten metal stirring device having a conventional structure.

FIG. 7 is a side sectional view showing a molten metal stirring device having a conventional structure.

[Explanation of symbols]

 1 Furnace 2 Stirring Pipe 3 Molten Metal 4 Opening 5 Insertion Port 6 Tilt Device 7 Insertion Means 8 Tilt Mechanism Means 9 Tilt Support Frame 10 Longitudinal Position Adjusting Means 11 Base 12 Vertical Position Adjusting Means 13 Support Rolls 14 Pieces Owned support points 15 fulcrums

Claims (1)

[Scope of utility model registration request] 1. A shaft support member is provided on the base end side of the stirring tube,
Through a support roll that supports the stirring tube so that it can move freely in the longitudinal direction, a cantilevered shaft is supported so that the tip of the stirring tube can move upward, and the shaft supporting member is moved forward and backward along the longitudinal direction of the stirring tube. An agitating tube supporting means having a direction position adjusting mechanism, a base for cantilevering the agitating tube supporting means, and a tilt for tilting the agitating tube supporting means between the base and the agitating tube supporting means. A portable stirring device for molten metal, characterized in that a rolling mechanism means is inserted, and a vertical position adjusting means for vertically moving the base is provided below the base.