JPS60126581A - Device for removing molten metal slag - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] The present invention relates to a molten metal slag removal device.

Conventionally, in the above-mentioned molten metal slag removal apparatus, an optical fiber is installed on the objective side of a fiberscope for visual inspection to monitor the slag suction state of the suction hend, and to measure the exposure of the molten metal surface by detecting the brightness of the molten metal surface. The objective section and the light input section were installed on the tip side of the suction head while the optical section was protected internally by separate cooling channel forming tubes, but two cooling channel forming tubes were used. In order to attach the tube, the overall structure of the suction hend, including the tube for forming the cooling flow path, becomes complicated and large, and the incident angle of the optical fiber's light incident part has a brightness detection function. Because it is set to an extremely small size, setting the direction of the light incident part alone during assembly is an extremely delicate and difficult operation, and this difficulty also contributes to a decrease in detection accuracy due to assembly errors. There was.

An object of the present invention is to make the overall structure of the suction hend compact and simple by rationally improving the arrangement of both fibers, and to make it easier to set the direction of the optical 7-eyeper light section.

The characteristic configuration of the molten metal slag removal device according to the present invention is as follows:
The objective part side of a 7-eye scope for visual inspection and the light entrance part side of a 7-eyeper scope for molten metal surface detection are arranged side by side in the tube for forming the cooling flow path, and the objective part and the light entrance part are installed on the tip side of the saturation hend. Its functions and effects are as follows.

In other words, with the above configuration, the objective side and the light incident side of both fibers can be installed in a predetermined shape on the suction head by simply providing one cooling channel forming tube, so two tubes can be installed as in the conventional configuration. The overall structure of the suction head, including the tubes for forming the cooling flow path, can be made more compact than when
I was able to simplify it.

Moreover, since the objective section for visual inspection and the light entrance section for detecting the molten metal surface are placed close together and facing the tip side of the suction head, it is only necessary to specify the relative positions of the objective section and the light entrance section. Now, the direction of the light input section can be set at the same time as the direction of the objective section, which is done while visually checking the tip of the suction head using a 7-eye scope for visual inspection. Compared to setting the orientation of the part alone in the dark, the setting can be done extremely easily and accurately, and as a whole, the molten metal slag removal device can be made compact and advantageous in terms of manufacturing. Ta.

Next, embodiments will be described based on the drawings.

Fig. 1 shows a molten metal slag removal device, in which a separator for separating and collecting slag (1) and a suction head (3) connected to a suction device (2) are attached to an arm (4) that can be automatically raised and lowered. The suction head (3), a monitoring device (5) equipped with a K detection unit, and a brightness measurement type molten metal surface detection device (6) are used to remotely visually check the slag suction status. ? !
While commanding, the suction head (3) is automatically lowered so as to automatically stop near the molten metal suction limit position,
The slag (9) floating on the molten metal (8) in the ladle (7) is continuously suctioned and removed, and cooling water is ejected in the suction head (3) (to solidify the suctioned slag into particles and form a separator). (1) It is configured to be transported by suction.

As shown in Figures 1 to 4, the detection parts of the monitoring device (5) and molten metal surface detection device (6) are comprised of a visual fiberscope connected to an imager (5A) that shows the state of slag suction. (5B) objective part (5C) side part, and
The light incident part (6C) side of the molten metal surface detection device fiber (6B) from the brightness detection sensor (6A) connected to the suction head automatic control device 6° (lO) is connected to the tip side outer peripheral wall. The protective tube (11) is fixed in parallel with the support member (llb) in the heat-resistant material protective tube (11) formed with the protective opening (lla), and the protective tube (11) in this state is attached to the suction head (
3) is fixed internally to the cooling flow path forming pipe (12) attached to the cooling flow path forming tube (12) so as to form a cooling flow path between the inner circumferential surface thereof;
Accordingly, the objective section (5) is equipped with a prism for refracting light.
C) and the light entrance part (6C), the light entrance opening (lla),
And, it faces the tip side of the suction head (3) through a light entrance window (+3) formed in the cooling channel forming tube 0 in a corresponding position.

Then, the cooling air supply pipe (15) connected to the cooling air supply device θ is connected to the upper end side of the cooling flow path forming pipe (12) so as to communicate with the cooling flow path (A), and A plurality of cooling air discharge holes (13c) are formed in the periphery of the light entry window 03) equipped with a glass plate (13a) and a protective wire mesh (13b), so that the cooling air in the cooling flow path (A) is Due to forced flow, both fibers (
5B) and (6B) are configured to provide thermal protection.

In addition, a bellows-shaped cooling channel-shaped accommodation hose extends from near the upper end of the cooling channel forming pipe (12) to cover the exposed 1'A of both fibers (5B) and (6B).
A separate cooling air from the cooling air supply pipe θ5) is caused to flow into the fiber in order to protect the exposed portion of the fiber from heat.

Both fibers (5B) and (6
B) are arranged side by side so that they overlap front and back when viewed from the front with respect to the light entrance aperture (lla) K, and the visual fiberscope (5B) is closer to the light entrance aperture (lla). At the same time, the objective part (5C) is located above the light entrance aperture (lla), and the light entrance part (6C) is located below the light entrance aperture (lla). (5C) and (6C) are arranged with their positions shifted vertically. In other words, by arranging the objective part (5C) and the light entrance part (6C) in front and behind the light entrance aperture (lla), both parts (5C) and (6C) can be placed side by side in the horizontal direction. In comparison,
The required opening width in the same direction as the cooling channel forming tube (+2) of the light entry window (13) was reduced to a size of 1 km.
ic The objective l (5C), which requires a light incident angle (θa) considerably larger than the incident angle (θb) of the light incident part (6C), can be easily and compactly made into both parts (5C).
), (6C) are arranged closer to the light entrance aperture (lla), so that the light entrance aperture (lla) and
The required opening area of the joining window (13) can be made as small as possible, so that the window gift can be made even more compact.

Next, another embodiment will be described.

In a state where the protection tube (11) is omitted, the objective part (5C) side part and the light entrance part (6C) side part of both fibers (5B) and (6B) are placed in the cooling channel forming tube 02). The fibers (5B) and (6B) may be arranged in parallel directly in the pipe 02). l can be changed in various ways.

Furthermore, various gases such as N2 gas can be used instead of air as the cooling gas 1, and the specific cooling channel formation structure of the cooling channel forming tube Q2) containing the fibers (5B) and (6B) can also be varied. Improvements are possible.

[Brief explanation of drawings]

The drawings show an embodiment of the molten metal slag removal device according to the present invention, in which Fig. 1 is an overall side view of the slag suction nozzle section, Fig. 2 is a view showing the slag suction monitoring status, and Fig. 3 is a main part. FIG. 3 is an enlarged vertical sectional view of FIG. (3)...Suction hend, (5B)...
...Visual fiberscope, (5C)...
・Objective part, (6B)...Light 7 eyeper for molten metal surface detection, (6C)...Light entrance part, (12+...
...Cooling channel J and expropriation pipe. Agent Patent Attorney Osamu Kitamura

Claims (1)

[Claims] The objective part (5C) side of the visual fiberscope (5B) and the light entrance part (6B) of the molten metal surface detection light 7 eyeper (6B)
C) side are arranged in parallel in the cooling channel forming tube 02), and the objective part (5C) and light entrance part (6C) are connected to the suction hend (
3) A molten metal slag removal device installed on the tip side.