JPH0421116B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention ignites the upper surface of the sintered raw material supplied to a moving pallet row, and sinters the raw material by sucking air by providing a wind box below the pallet row. A sintering machine seal provided near the end edge of the wind box in order to prevent air leakage from the gap between the end edge of the wind box and the lower surface of the pallet frame in a sintering machine that performs sintering. Regarding equipment.

Prior Art Conventionally, a sealing device for preventing air leakage from the gap between the end edge of a wind box and the lower surface of the pallet frame is the same as that used for preventing air leakage from the side edge of the wind box. It was common to use a dead plate. However, the dead plate is a non-contact type that does not come into contact with the lower surface of the pallet frame, and the purpose is to minimize the gap to obtain a sealing effect, so it is difficult to follow changes in the gap due to deformation of the pallet frame or local wear. is insufficient, and it is difficult to effectively reduce air leakage.

Furthermore, as disclosed in Japanese Utility Model Application Publication No. 58-83099, it has been proposed to use a single cam roll with a star-shaped cross section that rotates while engaging between the legs on the lower surface of the pallet frame as a sealing device. However, such a cam roll does not smoothly engage the pallet at the connecting portion, and since only one roll is used, the sealing effect is not sufficient.

OBJECTS OF THE INVENTION It is an object of the present invention to provide a sintering machine sealing device that eliminates the drawbacks of the prior art as described above, has good followability to changes in the shape of the lower surface of a pallet frame, and has a very high air leak prevention effect. It is in.

Structure of the Invention The sintering machine sealing device according to the present invention extends over the entire width of the gap between the end edge of the wind box and the lower surface of the pallet frame, and is supported such that the roll surface is in contact with the lower surface of the pallet frame. , an upper roll group consisting of at least two rotatable rolls adjacent to each other in parallel, and supported at a lower part of the upper roll group so that the roll surface is in contact with each of the two rolls of the upper roll group; 2
a lower roll group consisting of at least one rotatable roll arranged together with the book roll to form a staggered roll arrangement, each roll of the upper and lower roll groups having at least one roll; The surface part is made of elastic material.

Embodiment and Operation FIG. 1 is a schematic side view showing a state in which an embodiment of the sintering machine sealing device according to the present invention is provided near the edge of the ore feeding section side of a wind box. A similar sealing device can also be provided near the edge of the end of the windbox on the ore discharge side. Dead plate 1
has been conventionally used as a sealing device for the end gap, and is therefore replaced by the sealing device of the present invention. However, in order to further increase the sealing effect, it is installed as shown in the figure. You can leave it there. A sealing device 2 according to the invention is installed in a hopper 4 adjacent to a wind box 3. The sealing device 2 is supported such that the roll surface is in contact with the lower surface of the frame of the pallet 6 that moves in the direction of the arrow 5, and includes rolls 7a, 7a and 7a that are adjacent to each other.
An upper roll group consisting of 7b and 7c, and a roll 8 supported between two adjacent rolls of the upper roll group so that their roll surfaces are in contact with each other.
and a lower roll group consisting of a and 8b.
Each roll 7a, 7b, 7c, 8a, 8
b extends over the entire width of the end gap of the wind box 3, and forms a staggered roll arrangement as a whole as shown. Each roll is
As shown in Fig. 2, the roll surface portion is made of elastic material 9.
It is formed of.

Pallet 6 moves on rail 10 (Fig. 2) by arrow 5
When moving in the direction of , roll 7 of the upper roll group
a, 7b, and 7c are rotated by friction with the lower surface of the frame of the pallet 6, and thereby the rolls 8a, 8b of the lower roll group are also rotated.
As mentioned above, the surface portion of each roll is made of elastic material 9.
Since the frame is formed of Moreover, since they are in rotational contact with each other, there is little damage due to wear. What is particularly noteworthy is that even if the shape of the lower surface of the frame of the pallet 6 changes, the roll surfaces of the rolls 7a, 7b, and 7c follow it due to the action of the elastic material 9, so that the sealing effect is not impaired. It is. Another effect of the elastic material 9 is that when ore falls from between the grates of the pallet 6, the fallen ore can be wrapped between the elastic materials 9 on each roll and discharged below the hopper 4. That's true. The falling ore is an elastic material 9
When it is sandwiched between them, it is pressed into the elastic material 9, so that the sealing effect is not reduced even at that time.

Rail 10 for moving pallets due to long-term use
may wear out, which may cause the lower surface of the frame of the pallet 6 to be uniformly lowered. In order to deal with this situation, it is desirable that each roll be adjustable in vertical movement. In the embodiment shown in FIG. 2, the rolls 8a, 8 of the lower roll group are
b can be adjusted vertically, and the rolls 7a, 7b, 7c of the upper roll group can be adjusted vertically via the rolls 8a, 8b.

Each roll may be an idle roll, but it may also be actively driven by a suitable drive source in accordance with the pallet speed. In the embodiment of FIG.
2 drives the roll 8a via the chain 13, thereby driving the remaining rolls. Preferably, the motor 12 is linked to a drive source for moving the pallet in order to accommodate changes in pallet speed.

In order to obtain an effective sealing effect, it is necessary to make the gap between the hopper 4 and the outermost roll 7a as narrow as possible, but as shown in FIG. A complete sealing state can be obtained by providing a seal plate 14 which is in sealing contact with the roll surface of the roll 7a.

In order to obtain the effects of the present invention, it is necessary to provide at least two rolls in the upper roll group and at least one roll in the lower roll group, but the number of rolls and the installation pitch will depend on the length of the pallet 6 and the connection interval. In consideration of this, it is determined that the pallet 6 is always in contact with the roll. The same applies to the roll diameter.

In order to prevent the sealing device 2 from being destroyed when a large and heavy object falls from the pallet 6, each roll is supported so that it moves up and down individually to alleviate the impact force when it receives a large impact force. It is desirable to be present.

Effects of the Invention According to the sintering machine sealing device of the present invention, even if the shape of the lower surface of the pallet frame changes, the sealing action can be performed in accordance with the change. Also,
Because it is in contact with the underside of the pallet frame, it has a much higher air leakage prevention effect than non-contact systems such as dead plates.On the other hand, since it is a rotating contact system, there is less wear.

[Brief explanation of drawings]

FIG. 1 is a schematic side view showing a state in which an embodiment of the sintering machine sealing device according to the present invention is installed near the edge of the ore feeding section side of the wind box. FIG. 2 is a view taken along the line A--A in FIG. 1, and shows the elastic material in cross section only in the right half. 2... Sintering machine sealing device, 3... Wind box, 6... Pallet, 7a, 7b, 7c... Rolls of the upper roll group, 8a, 8b... Rolls of the lower roll group, 9... Elastic material.

Claims (1)

[Claims] 1. The end of the wind box in a sintering machine that ignites the upper surface of the sintering raw material supplied to a moving pallet row, and sinters it by providing a wind box below the pallet row and sucking air. A sintering machine sealing device provided near the edge of the end of the windbox to prevent air leakage from the gap between the edge and the lower surface of the pallet frame, the sealing device extending over the entire width of the gap, an upper roll group consisting of at least two rotatable rolls that are supported so that their surfaces are in contact with the lower surface of the pallet frame and are adjacent to each other in parallel; a lower roll group consisting of at least one rotatable roll supported so that the roll surface is in contact with each of the rolls, and arranged so as to form a staggered roll arrangement together with the two rolls. In the sintering machine sealing device, at least a surface portion of each of the upper and lower roll groups is made of an elastic material.