JPH0454210Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a stopper device for preventing slag from flowing out when discharging molten steel etc. from an iron mixer car.

(Prior art) Generally, when discharging molten steel etc. from a pig iron mixer car to a hot metal ladle, slag floating on the surface of the hot metal in the pig iron mixer car also flows out and flows into the hot metal ladle, so conventionally, it was removed from the hot metal ladle with a slag dredge Work was needed. However, this is inconvenient both in terms of labor and work efficiency, so as seen in Japanese Patent Application Laid-open No. 54-99706, when discharging hot metal from a mixing car,
In the process of paying out the hot metal, a blocking plate having a through hole is applied from the outside to the spout of the pig iron mixer, and the hot metal slag outflow path of the spout is blocked, while only the hot metal flows out from the through hole. Special Public Service 1977-
As seen in Publication No. 52406, a stopper support member is attached to a position straddling the furnace mouth of the pig iron mixer car, and a stopper with a handle is provided on this member, so that the stopper with a handle is located at the outflow portion when the pig iron mixer car is tilted. A device that exerts a slag damming effect has been considered.

(Problems to be solved by the invention) However, with the method disclosed in Japanese Patent Application Laid-Open No. 54-99706, it is difficult to operate the blocking plate to follow and apply the tilting of the pig iron mixer car from the outside, and a considerable amount of work is required. It is disadvantageous in that it requires special skill and specialized personnel, and the method disclosed in Japanese Patent Publication No. 57-52406 has the disadvantage that when the pig iron mixer is tilted, the gap between the stopper and the inner wall of the pig iron mixer is caused by the tilting angle. The gap between the holes changes greatly, and there is a high possibility of slag flowing out. Therefore, the effect of preventing the slag from flowing out is low. Also, when the pig iron mixer tilts more than 90 degrees, there is a risk that the stopper support member and the stopper will fall off. It is shorter than the long diameter side of the furnace mouth and longer than the short diameter side, so
The drawback was that it was complicated to attach and detach from the pig iron mixer.

Therefore, the present invention aims to provide a slag stopper device that is highly effective in preventing slag from flowing out of the pig iron mixer car, is easy to attach and remove from the pig iron mixer car, and does not fall off even when tilted by more than 90 degrees. be.

(Means for solving the problem) The present invention has a frame that straddles the furnace mouth of the pig iron mixer.
A heat-resistant weir plate located at the center of the furnace mouth is fixed in parallel with the furnace mouth, and latching brackets having downward openings are provided at both ends of the frame in the direction of the tilting center of the pig iron mixer car, and fixed to the pig iron mixer car. The frame is rotatably attached to the pig iron mixer by engagement between the engaging pin and the downward opening, and the inner width of the opening is larger than the pin diameter, and the hook part narrows the opening tip width. A slag stopper device for a pig iron mixer vehicle is characterized in that the slag stopper device is formed on both sides of the lower end of the bracket.

(Function) In the pig iron mixer car, slag is separated due to the difference in specific gravity and floats on top of the hot metal, so it tends to flow out due to the flow of hot metal when the pig iron mixer car is tilted and discharged.
However, according to the present invention, the weir plate is located in the center of the furnace mouth to suppress the floating slag, so by the skinning principle of the hot metal gutter of the blast furnace, the weir plate is held down by the weir plate, which only hot metal with a heavy specific gravity has. The slag flows out from below and is prevented from flowing out by the weir plate.

In addition, the stopper device of the present invention is installed by engaging the engaging pin on the pig iron mixer side with the downward opening of the latching bracket of the frame.
The stopper device can be easily attached and detached. Moreover, since the opening end width of the latching bracket is narrowed down by the hook part, when the pig iron mixer car is tilted, the engagement pin of the opening part gets caught on the hook part, and even if the pig iron mixer car is tilted more than 90 degrees, the stopper It is possible to prevent the device from being attached or detached.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

As shown in FIG. 1, the slag stopper consists of two long frames 3, 3, which are longer than the width of the furnace mouth 2 of the pig iron mixer 1 shown in FIGS. 3 and 4, and the ends of these long frames. A weir plate 5 made of a heat-resistant material is fixed to the lower surface of the center of the long frames 3, 3 across the long frames. Further, latching brackets 6 are hung down from both ends of each of the short frames 4, 4, and downward openings 7 are provided in these latching brackets 6. These downward openings 7 are approximately triangular in shape as shown in FIG. There is. Note that the opening tip width is set to be slightly larger than the pin diameter of the engagement pin 9, which will be described later.

The above-mentioned device is equipped in such a way that the latching brackets 6 are dropped into four engaging pins 9 attached to the periphery of the furnace mouth 2 of the pig iron mixer car 1 through openings 7, and each engaging pin 9 is set in the position shown in FIG. Further, in this state, the long frame 3 is installed over the furnace mouth 2, and the weir plate 5 is set at the center of the furnace mouth. In addition, each engagement pin 9... is connected to the pig iron mixer 1
located parallel to the center of the tilting axis.

The discharging of hot metal A from the pig iron mixer car 1 is carried out by tilting the mixer car using the tilting center 0 shown in FIG. (depending on the inclination angle), the latching bracket 6 slides on the engagement pin 9 due to the shift of the center of gravity, and the engagement pin moves relatively in the direction of the arrow in FIG. , engages the hook portion 8 of the bracket. Therefore, mixer car 1 is 90
Even if it is tilted by more than a degree, the engagement pin 9 will not be pulled out from the opening 7, and the weir plate 5 will not fall off.

In addition, at the time of above-mentioned discharging, the hot metal A is
However, the slag B is floating on top of the hot metal A in the pig iron mixer car 1, and the slag is also going to be drawn out of the pig iron mixer car. However, the weir plate 5 has a slag separation effect similar to that of the skimmer used in blast furnaces, etc., and by placing it in the center of the furnace mouth, only the hot metal A is discharged from the gap between the furnace mouth 2 and the weir plate 5, and the slag B
The weir plate 5 presses down and acts as a weir, thereby preventing the slag B from flowing out. In addition, in order to prevent the outflow of slag B and adjust the amount of hot metal discharged, it is necessary to control the tilting angle of the pig iron mixing wheel 1, but the weir plate 5 is located between the furnace mouth 2 and the weir plate 5 regardless of the tilting of the pig iron mixing car. Since there is little variation in the gap area, the above control becomes easy.

The furnace port 2 of the pig iron mixer 1 gradually becomes larger due to thermal erosion, erosion, etc. due to increased use.
Since the gap between the weir plate 5 and the furnace mouth 2 increases and the slag starts to flow out, the gap needs to be adjusted in accordance with the enlargement of the furnace mouth 2. To achieve this, it is practical to attach an auxiliary weir plate 10 to the side of the weir plate 5 as shown in Figure 5, or to manufacture multiple types of weir plates of different sizes and replace them. It is. In the former case, the bolter 12 is driven into the mounting rod 11 passed from the auxiliary weir plate 10 to the weir plate 5 and fixed.

When the discharging of hot metal is completed, the pig iron mixer 1 is returned to its original state before tilting. As a result, the engagement pin 9 returns from the hook portion 8 of the latching bracket 6 to the upper center of the downward opening 7, and therefore, the weir plate 5 and the frames 3, 4 can be removed by simply lifting vertically.

Furthermore, if movable doors 13 are attached to both sides of the weir plate 5 as shown in FIG. 6, it can be expected to function as a heat-insulating cover for the pig iron mixer car 1. This door 13 is caused by the pressure of hot metal when tilting,
Alternatively, the door may be opened and closed using the weight of the door due to tilting.

(Effects of the invention) As detailed above, according to the invention, when hot metal is discharged by tilting the pig iron mixing car, the weir plate attached to the furnace mouth can effectively prevent the outflow of slag.
This prevents the weir plate from falling off despite tilting over 90 degrees, allowing safe and reliable operation, and also making it easy to attach and remove the weir plate.

[Brief explanation of drawings]

Figure 1 A, B, and C are a plan view A, a front view B, and a front view B, showing an embodiment of the slag stopper device according to the present invention.
Side view C, Figure 2 is an enlarged view of the latching bracket,
FIG. 3 is a plan view of the device mounted on a pig iron mixer, FIG. 4 is a diagram of the operation when the pig iron mixer is tilted, and FIGS. 5 and 6 are a plan view and a side view, respectively, showing an application example. 1... Pig mixer car, 2... Furnace mouth, 3, 4... Frame, 5... Weir plate, 6... Latching bracket, 7...
...Downward opening, 8...Hook part, 9...Engagement pin.

Claims (1)

[Scope of utility model registration request] A heat-resistant weir plate located at the center of the furnace mouth is fixed to a frame that straddles the furnace mouth of the pig iron mixer car in parallel with the furnace mouth, and a hook having downward openings at both ends of the frame in the direction of the tilting center of the pig iron mixer car is provided. A locking bracket is provided, and the frame is rotatably attached to the pig iron mixer by engagement of the engaging pin fixed to the pig iron mixer with the downward opening, and the inner depth of the opening is larger in diameter than the pin diameter. A slag stopper device for a mixed pig iron car, comprising a hook part formed on both sides of the lower end of the bracket to narrow the width of the opening tip.