JPS61190013A - Device for blowing gaseous material and powder into ladle - Google Patents

Abstract

PURPOSE:To blow stably a gaseous material and powder into a ladle by providing a sliding plate to the bottom surface of a stationary plate provided to the ladle bottom and providing a mechanism which matches the apertures of both plates and connect the same in press contact by sliding the sliding plate. CONSTITUTION:A stopper wall 10a stops a sliding plate case 16 in the position where both apertures 11a, 15a of the stationary plate 11 and the sliding plate 15 mate with each other when the case 16 is slid in an arrow direction by the actuation of a cylinder 27 via a sliding rod 25. Then a control block 31 pushes down a connecting pin 28 to release the connection between the case 16 and the rod 25 by the pin 28. When the cylinder 27 operates further, only the rod 25 slides slightly leftward and an angle lever 21 turns slightly around a pivotal shaft 20 to lift a movable introducing pipe 18 thereby connecting the pipe to a socket 14a of a stationary introducing pipe 14 in press contact therewith. The main stop valve on the movable introducing pipe 18 side is opened in this state to blow the gaseous material and powder into the ladle.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a ladle gas and powder blowing device.

(Prior Art) Conventionally, in this type of means, as shown in Figures 1 and 2, an external introduction pipe 7 is connected to a sliding plate 6 or a sliding plate teeth, and the sliding plate B is It was being blown in from the front. In this case, the discharge part of the gas body is generally in the form of a fine through hole in which a porous brick groove is buried. It was common to inject gas into the molten steel through bricks that were in contact with the molten steel, or through a gas introduction pipe brick.

First of all, regarding the configuration shown in Fig. 7, the gas emitted from the bricks of the sliding plate 6 is damaged, and it is difficult to use it many times.
Generally, it could be used for 7 to 3 times. Also, since the molten steel is stirred inside the nozzle hole, the fixed plate! There was a concern that air would be sucked in from the bricks and the sliding bricks, and there were disadvantages in that a large volume of gas could not be blown. Next, in the configuration shown in FIG. 2, since the gas is blown into the molten steel at a pressure higher than that of the molten steel, the gap between the upper nozzle 3 and the fixed plate 5 bricks and the fixed plate! There was a gas leak from the joint between the brick sliding plate and the brick, and it was unclear how much gas was actually blown into the molten steel, which was a problem in quantifying the amount blown into the molten steel. In the figure, l is the paving brick at the bottom of the ladle, 2 is the nozzle receiving brick, and ≠ is the iron skin.

(Technical Problem) Therefore, in this invention, there is no air suction from the fixed plate and the sliding plate, and a large amount of gas can be blown into the brick joint between the upper nozzle and the fixed plate and between the fixed plate and the sliding plate. There is no gas leak from the brick, and the gas and powder can be constantly and stably blown in. The amount of blown gas can be quantified, and leakage problems during blowing can be reduced, and there is no damage to the gas discharged from the sliding plate bricks. The technical challenge is to make it possible to significantly increase the number of lifetimes with a small size.

(Technical Means) The present invention has been made to solve the above-mentioned technical problem, and the embodiments shown in Figures 3 to 3 will be explained in detail below.

First, l/ has the lower end socket /4 in the opening //61! A fixed inlet pipe /+ with a is a fixed plate on the ladle side provided vertically. In addition, De is the pot bottom iron skin, 10 is the fixed base, /2
is a fixed plate case, and mo/3 is a support brick on the gas blowing side. Next, lB is a movable introduction pipe whose upper end can be moved up and down through the opening lja of the fixed plate//sliding plate/j that slides in contact with the lower surface/a sliding plate tase with a vertical groove. , the sliding plate case/6 has a spring 2 on the fixed base IO.
It is designed to slide while being supported and guided by a frame/7 mounted with a ≠ interposed therebetween. Note that ita is a retaining hole provided on the lower surface of the sliding plate case lB, into which a head 2a of a connecting pin JJ' to be described later can be removably engaged. Reference numeral 25 denotes a sliding rod that can move horizontally forward and backward just below the sliding plate case 16, and is connected to the fixed base 10.
It is connected to its piston rod for operation by a cylinder 27 disposed below. Reference numeral 29 denotes a pin cylinder with an open upper end that is integrally provided with the sliding rod 2S, and a connecting pin 2g is fitted into the pin cylinder 29 so as to be able to rise and fall with a spring 30 interposed between it and the bottom surface.

As shown in FIG. 3, the head 21r (1) of the connecting pin 2t is biased upward by the spring 30 and is fitted into the engagement hole/Oa of the sliding plate case 16. pin 21r
The sliding plate case is detachably connected to the sliding rod 25. Then, the opening 11g of the fixed plate/l and the sliding plate 1
When the sliding plate case/B slides to the position where the opening lSa of No. 5 matches and hits the blocking wall 10a, the No. is pushed down against the spring 30, the connecting pin 2g is removed from the retaining hole /6 (l), and the regulating block 31 releases the connection between the sliding plate case 16 and the sliding rod 2S by the connecting pin 2g. is integrally provided with the barrier wall ioa.

Support plate below sliding plate case groove/9. /9 is a large angle lever with pivot 2 and pivot #1, one end of which is attached to sliding rod 2.
! The other end of the protrusion 2 on the side is engaged with the protrusion 23 of the movable introduction/equivalent side holder 2, respectively. And both openings mentioned above //a, /! At the position where 11 is aligned, only the sliding rod 25 slides and moves to open the movable introduction pipe/l.
is doffed and fixedly introduced/<Eve/l's receiving hole/l/-a is crimped and connected. It is desirable to further prevent gas leakage from the contact portion by interposing a sealing material.

(Function) First, Figure 3 shows the state when the blowing of gas and powder is stopped, and at the same time when steel leakage is prevented, the opening of the fixing plate l/ on the silk side
1 is tightly closed by a sliding plate/j brick. Now, when the cylinder 27 is operated and the sliding rod 2j slides in the left direction of the arrow, the sliding plate case L connected by the connecting pin 2g will also slide to the left as a unit. , and: Both openings //a of the fixed plate ll and the sliding plate lj.

15a (this is also the corresponding position of both introduction pipes/L/l), when the sliding plate case/6 slides and hits the blocking wall lOa, the regulating block 3/ The connecting pin 21 is pushed down to release the connection between the sliding plate case/6 and the sliding rod 25 by the connecting pin 2g. Then, by slightly sliding only the sliding rod 2j to the left by operating the cylinder 27, the angle lever 2/ is moved to the pivot M2.
The movable introduction pipe II is slightly rotated about 0 and lifted up, and is crimped and connected to the socket/hole a of the fixed introduction pipe/l, resulting in the state shown by the solid line in the figure. Then, the original pulp on the side of the movable introduction pipe II is opened and gas and powder are blown into it. Next, after the blowing operation is completed, the sliding rod 2 is slid in the right direction, opposite to the front, by operating the cylinder 27, and first, the angle lever 21 is moved in the opposite direction to the front by sliding back. The movable introduction pipe 1 is rotated slightly to lower the movable introduction pipe 1 slightly, and is turned away from the socket/stretch bond of the fixed introduction pipe 1. Then, furthermore, sliding loft I″2
5 slides to the right, first, the connecting pin 2g sequentially engages and engages the engagement hole ita along the slope 3/a of the regulation block 3/, and the sliding plate case 16 slides. Since it is connected to the rod 25 again, the sliding plate nurse/B slides along with the sliding of the sliding loftco 5, and the m fixed plates// are restored to their original state as shown in Fig. 3. The opening //a is tightly closed by a sliding plate/S brick.

(Effects) This invention is constructed as described above, and at the position where both the openings of the fixed plate and the sliding plate meet, only the sliding rod further slides, and the movable introduction pipe is lifted up, and the fixed introduction pipe is lifted up. Since it is mechanically crimped and connected to the socket, there is no gas leakage from the joint, and the fixing plate and slider 11FI&
It has outstanding effects such as no air suction from the air, constant and stable blowing of a large amount of gas and powder, and the ability to quantify the blowing amount. Further, leakage troubles during blowing can be reduced to a minimum, and there is little damage to the gas discharged from the bricks on the fixed plate side and the finger plate side, and the service life can be greatly improved.

Furthermore, the connecting pin between the sliding rod and the sliding plate case is controlled by a regulating block, and the movable introduction pipe is moved up and down by an angle lever that acts in conjunction with the sliding rod. It can be expected to operate reliably, has fewer failures, and significantly eliminates gas leakage and steel leakage problems.

[Brief explanation of drawings]

Fig. 1 is a longitudinal sectional view of the conventional device, Fig. 2 is a longitudinal sectional view of the embodiment shown above, Fig. 3 is a longitudinal sectional front view of the embodiment of the invention device when the blowing is stopped, and Fig. is a longitudinal front view during the same blowing process, and Figure 5 is a longitudinal side view when the blowing is stopped.
FIG. 6 is a longitudinal cross-sectional side view of the connecting pin portion same as above. /・・Padding brick, 2・・Nozzle receiving brick, 3°, Upper nozzle, ≠・・Pot iron skin, j・・Fixing plate, 61. Sliding plate, 7
・, introduction pipe, t6. Porous brick, 9...Pot bottom iron skin, IO...Fixed base, ioa,, blocking wall, /11.
Fixed plate, //a,. opening, 121. Fixed plate nurse, /31. Support brick, /l, Fixed introduction pipe, /≠a, Socket, /S.
・Sliding plate, /ja...opening, lb...sliding plate case,
/Ot a...Engagement hole, 17...Frame, /l, 6 Movable introduction pipe, 196. Branch edition, 200. Pivot, 2/, angle lever 1, U, holder, 23.・Protrusion, 2≠, 6
Spring, 250. Sliding rod, 2 O...Protrusion 127...Cylinder, 2g2. Connecting pin, 21rtl, 8 heads, 2
91. Pin tube, 306. spring, 316. regulatory block,
3/a, Slope, Patent applicant Tokyo Ceramics Co., Ltd. Agent Patent attorney Kazuo Oyasu No. 4 Figure D741・zt yt /j
・2f' a/a ゛"-ka
I...Figure 5Figure 6

Claims (1)

[Claims] A fixed plate on the ladle side is provided with a fixed introduction pipe having a lower end socket in the opening, and a movable introduction pipe whose upper end can be moved up and down through the opening of a sliding plate that contacts the lower surface of the fixed plate. The sliding plate case and the connecting pin attached to the sliding rod of the cylinder operation and removably connecting the sliding plate case slide to a position where both the openings of the fixed plate and the sliding plate match. a regulating block that releases the connection by the connecting pin when the plate case slides; and a movable introduction pipe that is pivotally connected to the sliding plate case and has both ends engaged with the sliding rod side and the movable introduction pipe side, respectively. It consists of an angle lever for lifting and lowering, and at the position where both openings meet, only the sliding rod slides, and the movable introduction pipe is lifted up and connected to the socket of the fixed introduction pipe by crimping. Ladle gas and powder injection equipment.