JPS6244314Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a molten material charging device.

Generally, a molten material charging device is used to charge the molten material into a melting furnace such as an electric furnace that melts molten material such as iron to produce hot water for casting.
However, when molten material is charged into the melting furnace using the molten material charging device, there is a problem in that dust mixed in the material diffuses out of the furnace, deteriorating the working environment around the furnace. In order to solve this problem, a dust suction hood has conventionally been provided above the melting furnace to suck the dust and guide it outdoors. However, since a space is required above the melting furnace for the bucket to accommodate the melted material, the dust suction hood has to be installed well above the melting furnace, and as a result, the dust suction power is weak and it cannot collect much dust. The working environment was not very good.

This idea was devised in view of this situation. A movable frame is horizontally movable between the melting furnace and the dust suction hood installed above it, and the movable frame is connected to the melting furnace and the dust suction hood. A guide duct is installed to form a dust passage between the melting furnaces, and the bottom of the guide duct is pivotally supported in the guide duct so that it can open and close on its own, and a bucket duct that surrounds the upper part of the melting furnace can be moved up and down. By providing the movable frame with a lifting device that moves the bucket up and down and opens and closes the bottom of the bucket, the working environment around the furnace will not be deteriorated by dust generated when the melted material is introduced. The purpose is to provide a dosing device.

An embodiment of the present invention will be described below with reference to the drawings.

Figures 1 and 2 show an embodiment of the present invention. In Figure 1, which shows the state during melting, 1 melts a melted material to create a molten metal 1a, which is passed through a sprue 1b into a ladle (not shown). It is a melting furnace that pours into
An input port 1c at the upper end of the melting furnace 1 is closed with a furnace lid 2. A hot air hood 2a is attached to the top of the furnace lid 2 to guide hot air leaking from the melting furnace 1 upward, and the furnace lid 2 is provided on the left and right sides (on the opposite side and the front side in the drawing). Furnace cover running rail 3
It is movable in the front and rear directions (left and right in the figure) along the same line. Further, a dust suction hood 5 is attached to the beam 4 of the building above the melting furnace 1, which sucks the dust coming out of the melting furnace 1 and guides it outside for discharge.

Between the melting furnace 1 and the dust suction hood 5, two rail support beams 6 are provided on the left and right in the front-rear direction, and a guide rail 6a is fixed to the upper surface of each of the rail support beams 6. There is.

In addition, in FIG. 2 showing the feeding state of the melted material, 7 is a movable frame.
Wheels 7a and 7b are attached to run on the top, and the front wheel 7a is provided with a running device 8 that rotationally drives it.In this way, the movable frame 7 can be moved back and forth. There is.

Further, a guide duct 9 which is a cylindrical body with a rectangular or circular horizontal cross section is attached to the lower surface of the movable frame 7, and inside the guide duct 9,
A plurality of rib-shaped bucket guides 9a are provided that protrude further downward from the lower end thereof. Note 9
b is a reinforcing member of the guide duct 9. Inside the guide duct 9, a bucket 10 having a rectangular or circular horizontal cross section is arranged so as to be movable up and down.
A molten material receptacle 10a extending upward is formed in the upper part of the bucket 10, and a bottom part 13 consisting of left and right bottom plates 11 and 12 is provided at the lower end thereof. Further, the brackets 11a and 12a of the bottom plates 11 and 12 are attached to a support bracket 10b provided at the lower end of the bucket 10 with a rotating pin 10c.
Bearings are provided. Further, a cylindrical bucket duct 14 surrounding the input port 1c of the melting furnace 1 is provided at the lower part of the bucket 10.

The movable frame 7 is also provided with an elevating device 21 that moves the bucket 10 up and down and opens and closes the bottom 13 of the bucket 10.
0, a guide pulley 19 that guides the wire 17;
It consists of a hanging rod 16 hung on a hook 18 at the lower end of a wire 17, and a link 15 rotatably connecting the hanging rod 16 and the bottom plates 11, 12.
Note that 3a is a bucket holder provided on the upper surface of the furnace cover running rail 3 to prevent the bucket 10 from descending, and 22 is a melting material charged into the melting furnace 1.

Next, the operation will be explained.

When storing the melted material 22 in the bucket 10, the bucket 10 is first lifted up by the lifting device 21 to the position shown by the two-dot chain line in FIG. Then, the bottom plates 11 and 12 of the bottom part 13 of the bucket bag 10 rotate upward as shown by two-dot chain lines in the same figure, thereby closing the bottom opening 10d of the bag bag 10. Next, the wheel 7 is moved by the traveling device 8.
A is rotated to move the bucket 10 together with the movable frame 7 and the guide duct 9 to a molten material loading location (not shown), where the bucket 10 is lifted and the molten material 22 is loaded onto the bucket 10. Load. In this case, since the bucket bag 10 is lifted by pulling the bottom plates 11 and 12 of the bottom part 13 upward, the bottom part 13 will not open due to the weight of the melted material 22.

When charging the melting material 22 into the melting furnace 1, move the furnace lid 2 to the position shown by the solid line in FIG. Above input port 1c
Then, the bucket 10 is lowered using the lifting device 21 until the lower end of the bucket duct 14 touches the bucket holder 3a, and the wire 17 is further loosened. Then Bucket 10
The bottom plates 11 and 12 of the bottom part 13 of the bucket are rotated downward by the weight of the melted material 22, and the opening 10d of the bucket 10 is rotated downwardly by the weight of the melted material 22.
is opened, and the melted material 22 falls and is thrown into the melting furnace 1. At this time, the dust 23 mixed in the melted material 22 flies upward from the input port 1c, but is sucked into the dust suction hood 5 through the bucket duct 14, bucket 10, and guide duct 9, and is discharged outdoors. It will not spread around the furnace 1.

When the melting material 22 is completely charged, the bucket 10 is lifted up, the furnace lid 2 is moved to the position shown in FIG. Start.

In the apparatus of this embodiment configured and operated in this manner, when charging the melted material, the guide duct 9, the bucket 10, and the bucket duct 14 provide a passage for guiding the dust 23 generated by the charging to the dust suction hood 5. This prevents the dust 23 from spreading around the melting furnace 1 and prevents the dust 23 from deteriorating the working environment around the melting furnace 1.

In the above embodiment, the dust suction hood is not equipped with a suction fan to suck the dust, but natural suction is performed. However, if the suction force is insufficient with natural suction alone, a compressor is installed near the top of the guide duct. Air may be introduced and flowed upward at high speed, and the resulting negative pressure may lead dust to the dust suction hood.

As described above, according to the melted material input device of the present invention, a horizontally movable movable frame is provided between the melting furnace and the dust suction hood, a guide duct for forming a dust passage is attached to the movable frame, and a A bucket duct whose bottom part is pivotally supported within the guide duct so that it can open and close on its own, and which has a bucket duct surrounding the upper part of the melting furnace is disposed in the lower part of the guide duct so as to be movable up and down. Since the movable frame is provided with a lift device that opens and closes, the dust generated when melting material is introduced is sucked into the dust suction hood without being diffused around the furnace, which has the effect of preventing deterioration of the working environment around the furnace.

[Brief explanation of the drawing]

1 and 2 show a molten material charging device according to an embodiment of the present invention, with FIG. 1 showing the state during melting work and FIG. 2 showing the state during molten material charging. 1...Melting furnace, 5...Dust suction hood, 7...Movable frame, 9...Guide duct, 10...Bucket, 13...Bottom, 14...Bucket duct, 2
1... Lifting device (link, hanging rod, hook, wire, pulley, winding drum).

Claims (1)

[Scope of utility model registration request] A dust suction hood is disposed above the melting furnace with a bucket movement space, a movable frame is provided horizontally movably between the melting furnace and the dust suction hood, and a movable frame is attached to the movable frame and is connected to the melting furnace. A guide duct that forms a dust passage between the dust suction hood and the guide duct, and a guide duct that is arranged so as to be movable up and down within the guide duct, the bottom of which is pivotally supported so that it can be opened and closed on itself, and which carries the melted material to be introduced into the melting furnace. The melting furnace is characterized by comprising: a bucket for accommodating the melting furnace, a bucket duct provided at the lower part of the bucket and surrounding the upper part of the melting furnace, and a lifting device provided on the movable frame for moving the bucket up and down and opening and closing the bottom of the bucket. Melted material input device.