JPH08164475A - Plate brick fixing mechanism of slide valve - Google Patents

Abstract

PURPOSE: To prevent the dislocation of a plate brick as well as the occurrence of crack on the sliding part by arranging, at the same side, operating parts of fixing and moving plate brick, by which the inclined face part of the setting reference part side of plate brick is abutted on the fixed reference face in an accommodating part by pulling a counter member. CONSTITUTION: At time of setting a plate brick 6, by aligning the inclined face part of the reference part side 6a along the reference face 20 in a plate brick accommodating part 17, the plate brick 6 is fitted into the gap between the reference face 10 and fixing member 22. Successively, by operating the operating part 19, a counter member 18 is pulled and then the fixing member 22 is pulled/moved, through a connecting member 25, in the direction to be pressed on the inclined part of fixed side of plate brick 6, the fixing member 22 is wedged into between the inclined face part and inner wall of the plate brick accommodating part 17, pressing equally left/right inclined face parts, thus, the plate brick 6 is strongly fixed between the reference face 20 and fixing member 22.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a slide valve for controlling an outflow amount of molten metal at a spout of molten steel processing equipment, and more particularly to a plate brick fixing mechanism.

[0002]

2. Description of the Related Art A slide valve for adjusting the amount of molten metal flowing out is provided at the molten metal pouring portion of a molten metal container in a continuous casting facility or the like.

This slide valve has a fixed plate brick mounted on a valve body 2 fixed to the bottom of a tundish or ladle 1 as molten steel processing equipment, as shown in a schematic cross section in the case of a two-layer type for convenience in FIG. An accommodating portion 3 and a movable plate brick accommodating portion 4 that overlaps with the accommodating portion 3 are provided, and fixed plate bricks 5 and movable plate bricks 6 are accommodated in the accommodating portions 3 and 4, respectively, and are fixed by a fixing mechanism to be described later. The brick storage part 4 slides by the hydraulic cylinder 7 and the nozzle holes 8 and 9 of the plate bricks 5 and 6 are slid.
The outflow amount of the molten metal is controlled by changing the matching position of.

Each of the plate bricks 5 and 6 has a fixed plate brick storage portion 3 in FIG. 5 and a movable plate brick storage portion 4 in plan views in FIG. From restraint to restraint on four sides, that is, each plate brick 5, 6
Is being formed into an octagonal shape and is being fixed to be constrained by a total of four surfaces with two surfaces at each end.

In the case of the above four-face restraint, each plate brick 5,
Since it is constrained by the taper surfaces at the four corners of 6, the side surface swells to the working part, which is the portion where the molten metal in the periphery including the nozzle holes 8 and 9 comes into contact as in the case of constraining at the two surfaces. Although there is an advantage that the generation of cracks due to the concentrated forces is suppressed, in order to prevent the occurrence of cracks, the angle of restraint by the tapered surface with respect to the longitudinal axis of the plate bricks 5 and 6 must be made small. The effect cannot be expected.

[0006]

However, if the restraint angle is made smaller, the set reference portion side of one end of the plate bricks 5, 6 is moved to the plate brick storage portions 3, 4 due to variation in dimensions during manufacturing of the plate bricks 5, 6. When the nozzle holes 8 and 9 are brought into contact with the reference surface, the nozzle holes 8 and 9 are misaligned, which hinders accurate outflow control.

Further, the restraint angle α on the side of the set reference portion shown by reference numerals 5a and 6a in FIGS.
The restraint angle β on the side of the fixed portion shown by 6b is set to a smaller angle, and the tightening force on the side of the fixed portions 5b and 6b is reduced toward the moving portion while reducing the influence of the positional deviation on the side of the set reference portions 5a and 6a. If it does not work, it is necessary to secure a predetermined amount of sliding stroke of the movable plate brick 6 with respect to the fixed plate brick 5, so the fixed portions 5b and 6b are fixed.
Must be located on opposite sides, so that for fixing, the counter members 13, 13 'in the plate brick storage parts 3, 4 are pushed to fix the fixing members 16, 16' connected to both ends thereof. Fixed parts 5b and 6b of plate bricks 5 and 6
Since the rotating operation of the operation portions (bolts 10 and 11) for pressing the two must be performed on the opposite sides, workability becomes poor.

[0008] In view of this, the present invention increases the restraint angle on the side of the set reference portion of the plate bricks and reduces the restraint angle on the fixed side thereof to prevent the displacement of the plate bricks and prevent the occurrence of cracks in the operating portion. Despite being able to
An object of the present invention is to provide a plate brick fixing mechanism of a slide valve, which can fix each plate brick from the same side and improve workability.

[0009]

As a means for solving the problems of the above-mentioned prior art, the present invention provides a linear portion having a required length in which both side surfaces in the longitudinal direction are parallel to each other, and a longitudinal direction continuous with the linear portion. The side surface on the side of the set reference portion at one end is an inclined surface portion having an angle α with respect to the extension line of the linear portion, and the side surface on the side of the fixed portion at the other end has an inclined surface portion β having an angle β smaller than the angle α of the inclined surface portion. In a slide valve that controls the outflow amount of molten metal by sliding one of the plate bricks and adjusting the opening of the nozzle hole of the plate brick by sliding one of them, a counter is installed in the plate brick storage section. A member is internally mounted so that it can be moved back and forth outside the storage portion, and both side portions of the counter member and a wedge-shaped fixing member that can abut on each inclined surface portion on the fixing portion side of the plate brick are connected by a connecting member. The operation part of the fixed and movable plate bricks for pulling the counter member to bring the inclined surface part of the set reference part side of the plate brick into contact with the reference surface fixed in the storage part is arranged on the same side. To do. A second aspect of the present invention specifies a connecting structure of the connecting member, the counter member and the fixing member, and the third aspect is
The structure of the operation part for advancing and retracting the counter member is specified.

[0010]

When the plate brick is set, the inclined surface portion on the reference portion side is aligned with the reference surface in the plate brick storage portion, and the plate brick is fitted between the reference surface and the fixing member.
Then, when the operating member is operated to pull the counter member, the fixing member is pulled by the connecting member in the direction in which the fixed member side inclined surface portion of the plate brick is pressed and moved,
The fixing member is difficult to fit between the inclined surface portion and the inner wall of the plate brick storage portion, and evenly presses the left and right inclined surface portions,
Thereby, the plate brick is firmly fixed between the reference surface and the fixing member.

When the plate brick is removed, if the counter member is moved in the opposite direction to the above, the fixing member also moves away from the inclined surface portion on the fixed portion side, and the holding of the plate brick is released. Plate bricks can be removed.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the embodiments shown in the drawings.

The fixed plate bricks 5 and the movable plate bricks 6 themselves are the same as those shown in FIGS. 5 and 7, and as shown in FIG. 2 only the movable plate bricks 6, linear portions of a required length in which both longitudinal side surfaces are parallel to each other. 6c, 6c, and the straight portion 6
The side surface on the side of the set reference portion 6a at one end in the longitudinal direction connected to c and 6c is inclined surface portions 6d and 6d having an angle α with respect to the extension line of the straight portions 6c and 6c, and the side surface on the side of the fixed portion 6b at the other end is Inclined surface portion 6 having an angle β smaller than the angle α
e, 6e, the end surfaces between the inclined surface portions 6d, 6d and 6e, 6e are straight, and each corner is rounded.

The outer peripheries of the plate bricks 5 and 6 are surrounded by iron bands 11 and 12, and the set reference portion 5 is provided.
Nozzle holes 8 and 9 are opened at central positions near a and 6a.

The fixing of the fixed plate brick 5 is the same as the conventional one, and as shown in FIG. 5 cited above, the inclined surface portions 5d, 5d on the set reference portion 5a side of the fixed plate brick 5 are accommodated in the plate brick storage portion 3. Have reference surfaces 3a, 3a whose positions are closely determined, and the counter member 1 is provided on the fixed portion 5b side.
3 is moved forward and backward by the operation of the operation portion 14 which is led out of the storage portion 3, and the fixing members 16 and 16 connected to the inner end side portion of the counter member 13 by the pins 15 and 15 are fixed plate bricks. 5, the inclined surface portions 5e, 5 on the fixed portion 5b side
It comes into close contact with e, and the counter member 13 is pushed in by the operating portion 14 so that the fixing member 1
6, 16 press the inclined surface portions 5e, 5e of the fixed plate brick 5 on the fixed portion 5b side so that the fixed plate brick 5 is fixed at a predetermined position by the reference surfaces 3a, 3a and the fixing members 16, 16. It has become.

On the other hand, the movable plate brick 6 is accommodated and fixed in the movable plate brick storage portion 17 as shown in FIG. 1, and the inside of one end of the storage portion 17, that is, the counter of the fixed plate brick storage portion 3. A counter member 18 is installed inside the side on which the member 13 is placed, and is moved back and forth by operating an operation unit 19 that is led out of the storage unit 17.

A set reference portion 6a of the movable plate brick 6 is provided slightly behind the position where the counter member 18 is placed.
Movable plate brick 6 in close contact with inclined surfaces 6d on the side
Member 2 having reference surfaces 20, 20 for determining the position of
1, 21 are projected.

In the plate brick housing 17 on the side of the fixed portion 6b of the movable plate brick 6, fixed members 22, 22 which can be brought into close contact with the inclined surface portions 6e, 6e on the side of the fixed portion 6b of the movable plate brick 6 are provided. ing.

As shown in FIG. 3, one of the fixing members 22, 22 is a wedge-shaped recess between the inclined surface portion 6e and the inner side surface 17a of the plate brick accommodating portion 17, and the outer side surface thereof is At the center position in the longitudinal direction, the inner surface 17
A projecting portion 23 having an arcuate peripheral surface for making line contact with a and enabling swinging is provided, and a hole 24 is provided at a position adjacent to the projecting portion 23.

Both side portions of the counter member 18 and the fixing members 22, 22 are connected by connecting members 25, 25. The connecting members 25, 25 are thin plate-like members, one of which is shown in FIG.
26 are provided in a protruding manner, the pins 26, 26 are fitted into holes 18 a, 24 formed in the side surface of the counter member 18 and the side surface of the fixing member 22, respectively, to connect the two, and the plate brick storage portion 17 Is located between the inner side surface 17a and the outer side surfaces of the linear portions 6c, 6c of the movable plate brick 6. The connecting means may be screwed instead of the pin 26.

The operation section 19 has the same structure as the operation section 14 of the fixed plate brick storage section 3. In this embodiment, the counter member 18 is provided with the nut member 27, and the screw shaft portion of the rod 28 is screwed into the nut member 27, and the square or hexagonal head portion 28a at the tip of the rod 28 is a plate. The counter member 18 is projected to the outside of the brick storage portion 17, and a tool is engaged with the head portion 28a to rotate the head portion 28a to move the counter member 18 back and forth.

The rod 28 is rotatably connected to the counter member 18, and the tip side protruding from the plate brick storage portion 17 is used as a screw shaft portion, and a nut is screwed into the screw shaft portion. The counter member 18 may be moved back and forth. Alternatively, a long hole may be provided at the protruding end of the rod 28, and a cotter may be driven into the long hole to pull the counter member 18.

Next, the operation will be described.

When the movable plate brick 6 is set, the inclined surface portions 6d, 6d on the side of the set reference portion 6a are used as the reference surfaces 20, 2 of the reference members 21, 21 in the plate brick storage portion 17.
The reference surfaces 20 and 20 and the fixing members 22 and 2 are adjusted to 0.
The movable plate brick 6 is fitted between the two.

Next, the head portion 28 of the rod 28 of the operating portion 19
When the tool is engaged with a and rotated, the counter member 18 is pulled, and the left and right connecting members 25, 25 are pulled with it, so the left and right fixing members 22,
22 is pulled, and the fixed members 22, 22 enter a wedge shape between the inclined surface portions 6e, 6e on the fixed portion 6b side of the movable plate brick 6 and the inner side surfaces 17a, 17a of the plate brick storage portion 17, and the left and right portions are formed. The inclined surface portions 6e, 6e are evenly pressed, and by the component force thereof, the inclined surface portions 6d, 6d on the side of the set reference portion 6a of the movable plate brick 6 are pressed against the reference surfaces 20, 20 and the reference surfaces 20, 20 and the fixing member. With 22, 22, the movable plate brick 6 is fixed in the plate brick storage portion 17. In this case, the fixing members 22 and 22 come into close contact with the inclined surface portions 6e and 6e so as to conform to the inclined surfaces 6e and 6e by swinging with the protrusions 23 and 23 of the outer side surfaces serving as fulcrums, and a reliable pressed state is obtained.

When the movable plate brick 6 is removed, contrary to the above, the counter member 18 is moved in the direction in which the counter member 18 enters the inside of the plate brick storage portion 17, so that the connecting members 25 and 2 are connected.
The fixing members 22 and 22 are separated from the inclined surface portions 6e and 6e on the side of the fixing portion 6b through 5, so that the movable plate brick 6 is released from the holding and the movable plate brick 6 can be removed.

[0027]

As described above, according to the present invention, the operation part for fixing plate bricks provided in the storage part for the fixed plate bricks and the operation part for fixing plate bricks provided in the storage part for the movable plate bricks are provided. Since they can be arranged on the same side, the operation for fixing the plate bricks can be performed on only one side, and the workability can be remarkably improved.

Further, when the counter member is pulled at the time of fixing, the fixing member pulled through the connecting member has a wedge shape that is difficult to insert between the inclined surface portion on the fixed portion side having a small angle and the inner side surface of the plate brick storage portion. It can be firmly fixed by the combined force of the force pushing the inclined surface part of the reference part side of the plate brick against the reference surface and the force compressing the plate brick in the width direction, and the misalignment of the nozzle hole of the plate brick can also occur. Therefore, the outflow amount of the molten metal can be accurately controlled.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of the present invention.

FIG. 2 is a plan view of the plate brick shown in FIG.

FIG. 3 is a perspective view of the fixing member of FIG.

FIG. 4 is a plan view of the connecting member in FIG.

FIG. 5 is a plan view showing a fixing plate brick fixing mechanism.

FIG. 6 is a cross-sectional view of a conventional two-layer slide valve that considers misalignment of nozzle holes.

FIG. 7 is a plan view showing a movable plate brick fixing mechanism of the same.

[Explanation of symbols]

 2 Valve body 3 Fixed plate brick storage part 4 Conventional movable plate brick storage part 5 Fixed plate brick 6 Movable plate brick 8, 9 Nozzle hole 13, 18 Counter member 14, 19 Operating part 16, 22 Fixed member 17 Movable plate brick storage Part 20 Reference surface 25 Connecting member 26 Pin

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Ryuzo Oshima 1 Kanazawa-cho, Kakogawa-shi, Hyogo Prefecture Kado Steel Works Kakogawa Works (72) Inventor Yasuyuki Kawamura 1-kanazawa, Kakogawa-shi, Hyogo Kadogawa Works, Kamido Steel Works, Ltd.

Claims (3)

[Claims] 1. Both side surfaces in the longitudinal direction are straight portions having a required length parallel to each other, and a side surface of one end in the longitudinal direction, which is continuous with the straight portion, on the set reference portion side forms an angle α with an extension line of the linear portion. There is a plurality of plate bricks that are inclined surfaces, and the side surface on the side of the fixed portion at the other end is an inclined surface having an angle β that is smaller than the angle α of the inclinations, and one of the plate bricks is slid to slide the plate bricks. In a slide valve that controls the flow rate of molten metal by adjusting the opening of the nozzle hole of
A counter member is installed inside the plate brick storage part so that it can be moved back and forth outside the storage part, and both side parts of the counter member and a wedge-shaped fixing member that can abut against each inclined surface part on the fixing part side of the plate brick are connected. The fixed and movable plate bricks are connected to the same side by connecting the members by a member and pulling the counter member to bring the inclined surface portion on the set reference portion side of the plate brick into contact with the reference surface fixed in the storage portion. Plate brick fixing mechanism for slide valves characterized by being arranged. 2. The connecting member has pins at both end portions thereof, and the pins are fitted and connected to holes formed in the outer portions of the counter member and the fixing member. Slide valve plate brick fixing mechanism. 3. The counter member is pulled by a screw mechanism by rotating a rod of which the operation portion is connected to the counter member and has a tip protruding outside the plate brick storage portion. Plate brick fixing mechanism for the slide valve described.