JPH0475768A - Slag skimming device for branched trough - Google Patents

Abstract

PURPOSE:To surely scrape out a slag by providing a horizontally extending brake arm on a truck, providing a freely liftable rake plate so as to be freely rocked around a slag scraping direction and providing a molten metal level detecting sensor on the bottom end thereof. CONSTITUTION:The truck 26 is moved forward and the rake plate 36 is lowered from above a branched trough 2. The bottom end of the rake plate 36 is stopped in the position where the molten metal level detecting sensor 40 detects the contacts of the molten metal surface. The truck 26 is then moved backward and the rake plate 36 is moved to a slag scraping channel 9 side. The slag floating on the molten metal surface of the branched trough can be, thereby scraped into the slag scraping channel. The rake plate 36 is rocked while follow ing up in correspondence to the bottom of the slag scraping channel 9 inclined leftward or rightward even if the molten metal is tapped only to one tap hole by inclining the branched trough leftward or rightward. Since the bottom side is in sliding-contact with the entire width by gravity, the slag is surely scraped out without making a clearance between the slag scraping channel and the bottom side of the rake plate.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a slag skimming device for a branch gutter in a gold melting anchor, which scrapes out slag at a seam that receives molten metal from a melting furnace.

BACKGROUND OF THE INVENTION In recent years, there have been developed techniques such as JP-A-63-238391 and JP-A-63-23839 that place molten metal discharged from a furnace into a gutter and automatically remove slag floating on the surface of the molten metal.
The second issue is proposed.

For example, in mold copper equipment, when sending molten metal from a melting furnace to two smelting factories, a branch gutter 2 is placed at the tip of the outlet @1, as shown in Figures 6 and 7. , '8 It is distributed to the drains 3A and 3B that lead to the Tomoki factory. This branch 1ii2
In this case, a water reservoir portion 5 is formed in the gutter body 4, and a number of groove-shaped hot water outlets D6A and 6B are opened on both the left and right sides and communicate with this water reservoir portion.

The pool 5 has a central slag floating part 5a and a protruding part 5b formed by dams 7A and 7B in the front and rear directions.

5c, and the molten metal supplied from the tapping gutter 1 to the slag floating part 5a flows through the molten metal passage space 8 below the dams 7A and 7B.
A, exit part 5b through 8B.

The slag flows to 5C 2, and the slag with low specific gravity is in the slag floating part 5a.
Floating on. In addition, in order to scrape out the floating slag 5-, a slag scraping groove 9 is formed in the front part of the slag floating part 5a, and an inclined bottom wall 9a slopes upward and forward from the bottom surface of the slag floating part 5a. It has a horizontal bottom wall 9b that extends in the horizontal direction and continues therefrom. , the second branch gutter 2 is both derived 1i? 1
13A and 3B, the branch gutter 2 is placed horizontally as shown in FIG.
When discharging hot water only to 3A, as shown in FIG. 8, the branching gutter 2 is used in an inclined state so that the hot water outlet 6A on the outlet gutter 3A side is at a lower level.

When removing floating slag from such branch gutter 2,
As shown in Fig. 9, the lower end of the rake brake I-10 is brought into contact with the hot water surface, and the rake brake 1-10 is moved from the hot water surface to the inclined bottom wall 9a and horizontally as shown by the arrow 1. The slag is scraped out by moving along the bottom wall 9b.

Problems to be Solved by the Invention Conventional slag sagging equipment scrapes out slag while maintaining a constant level of hot water! - for 1. It has functions such as setting the descent position of KIBLE 1/be4 to a constant value, and controlling the descent position by indirectly detecting the occult blood travel. Applicable to the gutter 2 L 7″: In the case of the following problems 6 (1) When the gutter body 4 is used in an inclined state, as shown in FIG.
0, the inclined bottom wall 9am surface of the slag scraping groove 9, and the bottom surface of the horizontal bottom wall 9b, and a gap is generated between the bottom surfaces of the horizontal bottom wall 9b and the slag cannot be scraped out reliably.

(2) It can be used in a horizontal or inclined state. Second, the fluctuation of the hot water level is large and the indirect detection of the hot water level is
It is not possible to accurately adjust the lowering level of the rake brake 1 to 3B.

The present invention solves the above-mentioned problems and can reliably remove slag with the sloped branch gutter, and also allows the descending operation of the / An object of the present invention is to provide a skimming device for a branch gutter that can accurately follow fluctuations in the level of hot water.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention provides a gutter body with hot water taps on both left and right sides, and a slag scraping groove on the front part C1. Take out the hot water from both baths in a horizontal position 2
This is a slag skimming device for a branch gutter that allows hot water to be drained from only one outlet in a state where the hot water is tilted to the left or right. 1 extending horizontally on the trolley
A /-gear arm is provided to be able to swing in the vertical direction, and a sea-N plate whose lower side is perpendicular to the slag scraping direction and along the horizontal direction is attached to the tip of the 1/- gear arm so as to be able to swing vertically. A boiling surface detection sensor is provided at the lower end of the talkie brake 1- to freely vibrate around the exit direction. The lower end of the plate is stopped at a point I where the molten metal surface drawer detects contact with the molten metal surface, and the trolley is moved rearward, and the rake plate is moved toward the slag scraping groove side. As a result, the slag floating on the water surface of the branch gutter/y) can be scraped out into the slag scraping groove. In addition, even if the branch gutter is tilted to the left or right and only one hot water outlet is tapped, it is compatible with the bottom of the slag scraping groove that is tilted to the left or right. Then, the lower side of the rake plate slides over the entire width due to its own weight, so that there is no gap between the bottom of the slag scraping groove and the lower end of the rake plate, and the slag can be scraped out reliably.

EXAMPLES Below, examples of the present invention will be described based on FIGS. 1 to 5. Incidentally, the same members as those in the conventional example from 1 to 1 are denoted by the same reference numerals, and the description thereof will be omitted.

As shown in FIGS. 3 and 4, this sugimming device [21
A pair of left and right guide rails 25 are provided on the turning tape tk24, which is supported rotatably around a vertical turning axis 23 on a pedestal 22, and a movable cart 26 is mounted on these guide rails 25. 8 This trolley 26 arranged
A support column 27 is erected at the rear, and the base end of a 1/- gear arm 28 extending forward is supported at the -h end of the support column 27 so as to be swingable in the vertical direction via a horizontal pin 29. ing. Between the swinging Q-pull 24 and the frame 22, a large stroke cylinder 30.3 and a small stroke swing cylinder 30b are connected in a double-mouthed Y shape. A rotating cylinder 30 is connected 2, a rotating cylinder 30. i moves the rake arm 28 from @ machine position (a) to working position iF (1-7) via truck 26 through L7.
While rotating, the swing cylinder 30b displaces the key arm 28 at the working position (0) corresponding to the slag scraping position 1. The revolving table 241 has a cart 24
The rake arm 28 is moved in the front and back direction via the trolley 26, and the cylinder 31 for scraping the eyes is disposed. Rake arm 28 at the front of truck 2G
from below], the levitating jack 32 that swings the rake arm 28 in the downward direction is erected. 3
Reference numeral 3 denotes a cage 1 carrier for connecting the common supply cable and signal cable to the carriage 26.

The front jdl Norki arm 28 is the first arm 28 on the base end side.
a, and a second arm 281) which is detachably attached to the seventeenth arm 28a via a connecting member 28e. 1-, at the tip of the second arm 28b, as shown in FIG.
is fixed, and 1. is fixed to the receiving plate portion 34. -N plays 1 to 36 (mounted so as to be able to rise and fall freely and swing freely around the slag scraping direction. That is, as shown in Fig. 2,
A pair of left and right elongated holes 37A and 37B are formed through the receiving plate portion 34, and the lower portions thereof are widened inwardly.
There are elongated holes 37A and 37B between the rake play 1-36 on the proximal end side of the rake arm and the presser play 1-38 on the distal end side of the rake arm, which are arranged so as to be able to slide freely between them.
A slide bin 39 which is movably passed through is connected and fixed. Therefore, as shown in Figure 2, it is at the lower limit due to its own weight! The rake plate 36 is located at a position where the slide bin 39 is located at the lower end of the elongated holes 37A and 37B.
36a is located along the main Y direction. As shown by the imaginary line, the contact surface of the lower side scraper @ 36a (corresponding to the inclined bottom wall 9a and horizontal bottom wall 9b of the slag scraping groove 9) is in an inclined state. However, when the slide bin 39 moves inside the long shaft 37, a gap will not be created between the slide bin 39 and the abutting surface.
-36 has a contact sensor (an example of a hot water level detection sensor) = io whose detection end 40a is exposed 1' on the lower scraped end 36a side.
- arranged in the downward through hole 41, rake pull l, -1
-36 accurately detects the slag scraping position 5 and controls the up-and-down jack 32. 40b is a lead wire of the contact sensor 40.7 Next, the slag removal operation by this skimming device 21 will be explained.

As shown in Figure 5, operation is performed from a control panel outside the area, and the power supply diameter is increased, the return to origin is decreased, and automatic skimming is performed in this order. Check that the JT power is always applied on the operation panel (S1).
switch on (S-2). If each operation of the device is not at the home position, an instruction is given to return to the home position.

and is operated according to flowchart l-.
1. -Kids are rake arm 2B and rake arm)~-1
-36 is shown. Further, the rotation ■ indicates the rotation of the rotation table 24 (S-4, S-16) by the rotation cylinder 30a, and the rotation ■ indicates the rotation by the rotation cylinder 30t) (S-5).
, 3-11).

In addition, in the 10th example, Rakebudo = 1.3G was installed through the long holes 37A, 37B and the bottle 39, but 1/-
The kiptote may be rotatably supported via a bottle, and the vial may be supported via a slider or the like so as to be movable up and down.

As described in the effects of the invention, according to the present invention, the togive 17-
The rake arm is equipped with a plate that can be raised and lowered at the tip of the rake arm and can swing freely around the slag scraping direction.
te l, -"r '7" 1/ -)- is inclined 7, all @
Since the chickens are in sliding contact, 1/-kip 1. -1- There is no gap between the slag scraping groove and the bottom of the slag scraping groove, and the slag floating in the molten metal is reliably taken out from the slag scraping groove.
I can do it. In addition, since a smooth surface contact sensor is installed at the lower end of the lagib l/-1~, the liquid surface b level may fluctuate significantly.・It is possible to accurately control the lowering position of the

[Brief explanation of drawings]

1 to 5 show one embodiment of the present invention, FIG. 1 is a side view of the rake plate mounting part, and FIG. 2 is an I.
-I arrow view, Figure 3, and Figure 4 are skimming devices!
Fig. 5 is a flowchart showing the operation of the skin jig system, Figs. 6 to 10 show a conventional example, and Figs. 8 and 9 are a cross-sectional view and #1 cross-sectional view showing how the branch bucket is used, and FIG. 10 is a diagram showing how the rake plate 1/-t is used. 2... Branch gutter, 9... Slag scraping groove, 9a... Inclined bottom wall, 9b... Horizontal bottom wall, 21... Skimming device!
, 22... Frame, 24... Swivel table, 2G...
・Dolly, 28... Rake arm, 29... Horizontal bin, 30... Turning cylinder, 31... Scraping cylinder, 32... Raising jack, 34... Receiving plate part, 3
5...Mounting tool, 3G...Rake plate, 36a.
...Ten sides scraped end, 37A, 37B...Elongated hole, 39...
・Slide pin, 40...Contact sensor 4J6 N'l also prized group/prisoner Figure 7

Claims (1)

[Claims] 1. The gutter body is provided with hot water outlets on both the left and right sides, and a slag scraping groove is provided in the front part, so that hot water can be discharged from both hot water outlets when the gutter body is in a horizontal position, and from one side when the gutter body is in a horizontal position. This is a slag skimming device for a branch gutter where hot water can be dispensed only from the hot water outlet, and a trolley that can move back and forth and rotate is provided on a pedestal, and a rake arm that extends horizontally on this trolley is swung vertically. At the tip of the rake arm, a rake plate whose lower side is perpendicular to the slag scraping direction and along the horizontal direction is provided so as to be able to move up and down and swing freely around the slag scraping direction, and the lower end of this rake plate A slag skimming device for a branch gutter, characterized in that a hot water level detection sensor is provided in the section.