JPH01219114A - Shaft furnace charge substance distributor - Google Patents

Abstract

PURPOSE: To make it possible to control the flow of in-furnace gases by providing the distributor with a mechanism for adjusting a charge quantity and a charge falling width by adjusting the spacing between a rotary cylinder for charging the charge into the furnace and a cone.

CONSTITUTION: The charge 1 in the hopper 2 is dropped into the rotary cylinder 3 and the rotary cylinder 3 is rotated by driving of a speed variable motor 14. Simultaneously the cone 7 integrated with a partition 8 inserted into guide grooves 3 formed on the inside wall of the rotary cylinder 3 is connected together with a perpendicular shaft 6 and a connecting box 5 to a cylinder 4 and is rotated in this state at the same speed by the rotary cylinder 3. At this time, the charge 1 falling in the rotary cylinder 3 falls while the charge is rotated together with the rotary cylinder 3 by the partition 8. The falling position of the charge is changed by the rotating speed of the rotary cylinder 3. Simultaneously the cone 7 is adjusted in the spacing from the rotary cylinder 3 by the vertical motion by the cylinder 4. As a result, the adjustment of the discharge quantity and distribution width of the charge 1 is made possible and the flow of the in-furnace gas is made possible.

COPYRIGHT: (C)1989,JPO

Description

DETAILED DESCRIPTION OF THE INVENTION (Prior Art) The present invention relates to an apparatus that allows charging material to be distributed to designated positions inside a blast furnace in order to regulate the flow of gas inside the blast furnace. .

(Problem M to be solved by the conventional technology and the invention) One of the most important elements in the management of the furnace condition and furnace body of a blast furnace is the control of the gas flow in the furnace. Many things are affected by the distribution of things. However, in the past, since the rotating cylinder was a perfect circle, it was possible to distribute the charge, but now, because the space between the rotating cylinder and the cone (CONF) is fixed with several partitions, it is possible to distribute the charge. Under rotating conditions, the charge amount and charge fall width are constant, and there is a problem that the gas flow in the furnace and the charge amount cannot be adjusted.

(Means for Solving the Problem) The above problem consists of a vertical rotating cylinder, a guide groove provided inside the rotating cylinder, and a vertically movable vertical cylinder guided within the guide groove. It consists of a partition formed integrally with a provided cone, and a cylinder connected to the cone so that it can move up and down, and the distance between the cone and the rotating cylinder is adjusted by the cylinder, and the cone is connected to the rotating cylinder. Same-
This is achieved by a blast furnace charge distribution device that adjusts the amount and distribution width of the charge inserted into the blast furnace in a rotating state.

(Operations and Examples) The present invention is capable of adjusting the amount of charged material and the falling width of the charged material by adjusting the distance between the rotating cylinder and the cone under the same rotating state of the rotating cylinders. The following is an explanation of the drawings.

As shown in Figures 1 to 5, a hopper 2 for storing the charge 1
A rotating cylinder 3 is provided perpendicularly to the hanging part of the rotary cylinder 3, and inside the rotating cylinder 3, a cone 7 that can be moved up and down by an upper cylinder 4 and a partition 8 that is integrally formed are connected to a vertical shaft 6 and can be moved up and down. A guide groove 3' is provided so that

Bearings 9 and 9 for smooth rotation of the cone 7 are provided inside the connection box 5 that connects the cylinder 4 and the cone 7.
' has been inserted. A rotary gear 11 for rotating the rotary cylinder 3 is fitted onto the rotary cylinder 3, and bearings 10 are provided at the upper and lower parts of the rotary cylinder 3, respectively.
10' is inserted into the shaft to connect a power source, for example, a variable speed motor 14.
A drive gear 12 is provided which is fixed to the furnace body 15 and is connected to the transmission 13. In the drawing, reference numeral 16, which is not explained, is a metal bearing so that the vertical shaft 6 can rotate without vibration, and reference numeral 17 is a metal bearing that allows the rotating cylinder 3 to distribute the raw material under constant rotation. It is in a state of being.

To explain the operation and effect of the present invention configured in this way, when the charge 1 stored in the hopper 2 is appropriately dropped into the rotating cylinder 3 and the variable speed motor 14 is driven,
Since the rotation reduced by the reducer 13 is connected to the drive gear 12 and the rotating gear 11, the rotating cylinder 3 is rotated and at the same time the rotating cylinder 3 is inserted into the guide groove 3' provided on the inner wall of the rotating cylinder 3. The cone 7 integrated with the partition 8 also rotates at the same speed as the rotating cylinder 3 which rotates while connected to the cylinder 4 by means of the vertical axis and the connecting box 5 . At this time, the inserted object falling into the rotating cylinder 3 is caused to fall while rotating together with the rotating cylinder 3 due to the partition 8.

Therefore, if the rotation of the rotating cylinder 3 is fast, the rotating cylinder 3
The charge 1 will fall farther away from the center, and if the rotation is slow, it will fall closer.At the same time, the distance between the cone and the rotating cylinder 3 is adjusted by the vertical movement of the cylinder 4. As shown in FIG. 4, by changing the distance between the cone 7 and the rotating cylinder 3, the discharge amount and distribution width of the charge can be adjusted. This can be explained using the principle shown in FIG. 6 as follows.

When the rotating cylinder 3 is in uniform circular motion, the separation speed V of the insert 1 in the rotating cylinder 3 from the rotating cylinder 3 is V=rw.
As shown in Figure 6 (a), the object moves in the same direction as the object being thrown at VJ degrees in the horizontal direction. (ignoring resistance).

That is, the velocity (Vx, Vy) after t seconds is Vx = V Vy = gt The position (X, Y) after t seconds is the reach distance of the bottom (X>) Therefore, the charging in the blast furnace in Fig. 4 is The radius of the object falling is r (radius of the rotating cylinder): 0.5 mh (height of the falling object: 6.5 m N (number of revolutions of the rotating cylinder: 1.105 rotations/5ec)
4=66 H,P,)l r+ (radius of cone before descent): 0.4mr2
(Cone radius when the cone is lowered to an arbitrary position): 0.35m △r (Cone radius difference): rl-r2 = 0.05
m, then X (falling radius of the insert in the blast furnace) Xl (
Radius of falling charge in the blast furnace due to the descending cone) X2 (Radius of falling charge in the blast furnace due to the descending cone)
2 3.2 2.8 = 0.4 (m).

That is, the radius of the upper cone from the point where the charge falls<r+
) and the radius of the lower cone (r2) (r=r+r2) is 0.05m, the difference in radius of the charge dropped into the blast furnace (X=X+X2) shows a difference of 0°4m. ing.

(Effects of the Invention) As described above, the present invention includes a vertical rotating cylinder, a guide groove provided inside the rotating cylinder, and a lower part of the rotating cylinder that is movable up and down while being guided within the guide groove. It consists of a partition formed integrally with a cone provided in the holder, and a cylinder connected to the cone so that the cone can be moved up and down. This is a blast furnace charge distribution device that adjusts the amount and distribution width of charge inserted into the blast furnace in the same rotating state, so it rotates with a cone that moves up and down by a cylinder fixed to the top of the cylinder. By adjusting the distance between the cylinder and the rotating cylinder, it is now possible to adjust the amount of charge and the distribution width of the charge under the same rotational condition of the rotating cylinder, thereby making it possible to control the flow of gas in the furnace. It is an invention made by

[Brief explanation of the drawing]

FIG. 1 is a schematic cross-sectional view showing an embodiment of the blast furnace charge distribution device according to the present invention, FIG. 2 is a cross-sectional view of the main part of FIG. 1, and FIG. FIG. 4 is a partially cut away perspective view, FIG. 4 is a diagram of the fall of the charge in the blast furnace as the cone moves in the apparatus of the present invention, and FIG. 5 is a cross-sectional view taken along line A-A' in FIG. Figures 6 (a), (b), and (c) are diagrams of the principle of falling charges.

Claims (1)

[Claims] A vertical rotating cylinder (3), a guide groove (3') provided inside the rotating cylinder, and a vertically movable cylinder guided within the guide groove (3') and provided at the bottom of the rotating cylinder. It consists of a partition (8) integrally formed with a cone (7), and a cylinder (4) connected to the cone (7) so that it can move up and down, and the cone (7) is moved by the cylinder (4). The rotating cylinder (3) is adjusted in distance from the rotating cylinder (3).
A blast furnace charge distribution device which adjusts the amount and distribution width of the charge (1) inserted into the blast furnace in the same rotation state.