JPS6142673Y2 - - Google Patents

Description

[Detailed explanation of the idea]

This invention relates to a device for pouring and constructing refractory linings on the side walls of molten metal containers such as ladles used in the steel industry. Recently, the number of lining refractories such as ladles has been increasing by pouring castable castable refractories.However, conventional construction equipment is not suitable for lining refractories such as ladles, as shown in the vertical cross-sectional view of a ladle in Figure 1. A cylindrical pouring construction form 2 (hereinafter referred to as form 2) is set approximately in the center of the bottom of the ladle 1 placed on a ground,
Casting monolithic refractory material 4 (hereinafter referred to as pouring material 4) containing 7 to 8% moisture, which has been kneaded in mixer 3, is directly poured into the gap between the inner wall of side wall permanent lining 5 of the ladle and the outer wall of formwork 2. The side wall work lining 6 was being constructed. In this case, as shown in Fig. 2 (plan view of Fig. 1), the mixer 3 is installed at one specific location, so the pouring material 4 is deposited at that one falling point, so it has to be manually circumferentially removed. The work involved leveling the liquid by moving it in different directions, and then setting up vibrators 7 at several locations and filling it. The problem in this case is that after construction, the quality of the side wall work lining 6 varies in the circumferential direction due to the leveling of the poured material, resulting in unbalanced erosion due to the use of the ladle, which shortens the service life. The leveling work of the pouring material 4 and the operation of the vibrator require manual labor. Next, as shown in FIG. 3, a conical (shape-like) distributor 8 is placed or integrated with the formwork 2, and from the top thereof, as shown in FIG.
There is one in which the pouring material 4 kneaded by the mixer 3 is dropped via a conveyor 9 and poured into the gap between the side wall permanent lining 5 and the formwork 2 while being dispersed on the slope of the conical distributor 8. (Unexamined Japanese Patent Publication 1973)
-144803) With such a device, it is difficult to distribute the pouring material evenly in the circumferential direction of the side wall of the ladle by simply dropping it from the top of the conical distributor.
For this reason, it was necessary to install large equipment such as a table 10 for swinging and rotating a ladle weighing more than 120 tons including the formwork. In view of the problems of the conventional device mentioned above, this invention provides a device that automatically applies a uniform lining to the entire circumference of the side wall without requiring any human intervention using a simple device, and is capable of lining a molten metal container. The purpose is to extend the service life and save labor in lining construction. The gist is that the hopper has a motor installed approximately on the central axis of the pouring formwork, and a tiltable inclined chute connected to the output shaft of the motor and installed at the upper end of the rotating shaft extending above the formwork. and a vibrator attached to a pivot arm attached to the rotating shaft so as to be movable up and down. To explain this idea based on the drawings, as shown in FIG. A swing drive motor 13 (hereinafter referred to as motor 13) with a drive shaft aligned with the shaft is fixed. The motor 13 is suitably a geared motor whose output shaft 14 extends upward and whose rotation speed is 10 to 15 RPM. It is preferable that the motor 13 is built into the base 12 to prevent it from getting wet during cleaning. A rotating shaft 1 that extends the output shaft 14 upward.
A hopper 18 for accommodating the pouring material 4 is mounted on the axis of the upper end of the hopper 5 so as to be tiltable. Then, an inclined chute 17 is connected and provided so that the pouring material 4 in the hopper 18 slides down inside the upper part of the side wall of the ladle. The inclined chute 17 is connected so as to be inclined at approximately 45 degrees with respect to the horizontal plane. With this configuration, the output shaft 1 of the motor 13
4 rotates the hopper 18 directly above the formwork 11, and the lower end of the inclined chute 17 connected thereto pivots along the inner side near the upper end of the side wall permanent lining 5. Next, a tilting cylinder 19 straddles the tilting chute 17 and the rotating shaft 15 and expands and contracts by hydraulic pressure or the like.
to fix. By operating the tilting cylinder 19, the position of the drop opening at the lower end of the tilting chute 17 can be adjusted. Next, the end of the rotating arm 16 is fitted near the lower end of the rotating shaft 15, and the rotating arm 16 is placed on the upper surface of the formwork 11.
6 is fixed to the rotating shaft 15 so as to rotate. The other end of the pivot arm extends to near the outer wall of the ladle,
A vibrator 20 is provided at the other end and located inside the side wall permanent lining 5, and a lifting motor 2 for lifting and lowering the vibrator 20.
Install 3. That is, first, the guide stand 22 is slidably fitted and inserted into the extended end of the swing arm 16, and the mounting bar 21 with the vibrator 20 attached to the lower tip thereof is inserted into the guide stand 22. By slidingly adjusting the guide stand 22, the vibrator 20 can be positioned in the gap between the formwork 11 and the side wall permanent lining 5. Next, the lifting motor 23 is attached to the guide stand 22, and the wire rope 25, which is fixed to the tip of the attachment bar 21, is connected to the winding wheel 24 attached to the motor. When installed in this manner, the vibrator 20 attached to the tip of the attachment bar 21, which is loosely inserted, can be raised or lowered to any desired position or stopped by operating the lifting motor. Therefore, the vibrator 20 rotates within the gap at a predetermined height position in synchronization with the rotation of the rotating shaft 15. Note that the formwork 11 is structurally stronger than the conventional formwork 2 because it is subjected to the weight of each of the structures described above and vibrations caused by the swinging operation. Referring to FIG. 4, we will explain how to use this invented device constructed as described above. First, before operation, the material drop opening of the inclined chute 17 is connected to the formwork 1.
Tilt cylinder 1 so that it is located near the outer wall of 1.
9 to adjust. This is because the distance from the central axis of the formwork 11 to the side wall work lining 6, that is, the position of the material dropping port, varies depending on the diameter of the formwork, that is, the diameter of the ladle, and the construction thickness of the side wall. The positional relationship when the formwork is small is shown by the two-dot chain line in FIG. Similarly, the guide table 22 is slid and adjusted so that the vibrator 20 is located approximately at the center of the gap to be worked. After the above preparations, when the motor 13 is activated, the inclined chute 17 rotates at a constant speed around the formwork 11 at a predetermined drop opening position. The pouring material 4 kneaded at another location (not shown) falls into the hopper 18 via the belt conveyor 26, slides down the inclined chute 17, and spreads around the entire circumference of the gap between the side wall permanent lining 5 and the formwork 11. fall across. During this time, the pouring material 4 is supplied to the belt conveyor 2.
6 and the constant rotation of the belt conveyor 26, the amount of poured material 4 is always kept constant within a unit time. The construction top surface always remains at approximately the same height throughout the construction process. On the other hand, the height position of the vibrator 20 is always adjusted so that the upper surface of the construction site is adjusted by adjusting the winding of the winding wheel 24 connected to the wire rope 25, that is, by synchronizing the rotation of the lifting motor 23 with the height of the pouring material 4 during construction. Since the vibrator circulates at a certain depth, the vibration filling effect is good, and no undue resistance is applied to the vibrator. The effect will be further enhanced if the vibrators 20 are provided at two or three locations, and the raising and lowering of the vibrators 20 is not limited to the above-mentioned means, but other means such as a known rack and pinion mechanism or raising and lowering the swing arm 16 may also be used. As explained above, this invention enables the pouring material to be poured evenly and continuously over the entire circumference when constructing the side wall lining of the ladle, and also enables vibration and filling work to be carried out effectively. Therefore, it is possible to achieve uniform construction quality, thereby shortening the curing period after construction and extending the useful life of the ladle. Additionally, since it is fully automatic and does not require human labor, the number of construction steps will be reduced. Next, Figure 1 shows the case where the device of this invention is used.
Regarding a comparative example using the conventional device shown in FIG. 2, Table 1 describes the construction data, and Table 2 describes the ladle usage results.

【table】

[Table] As is clear from Tables 1 and 2, when construction is performed using the device of this invention, continuous pouring of material and automatic operation of the vibrator are possible, and the number of construction workers is halved compared to conventional methods. The total number of construction hours was also reduced by approximately 20%. In addition, the even distribution of material through swirling pouring and the automation of vibrator operation make the filling of castable refractories uniform and eliminate uneven tightness, which allows the lining to melt evenly, thereby extending the service life of the ladle lining. We were able to extend the width by approximately 75% (including some effects from improving the quality of the refractories). The device of this invention can be used not only for side wall work lining of ladles, but also for pouring side wall permanent lining and construction regardless of the size of the ladle. Can be applied to containers. The device of this invention can be used not only for intermediate repairs when the refractory lining is damaged due to melting, peeling, cracking, or falling off during the use of the container, but also for so-called complete repairs or when constructing a new lining. , can be used in all cases of pouring construction of monolithic refractories.

[Brief explanation of the drawing]

Figures 1 to 3 show the conventional equipment and the construction state. Figure 1 is a longitudinal sectional view, Figure 2 is a plan view of Figure 1, and Figure 3 is a longitudinal sectional view of another conventional equipment. ,
FIG. 4 is a longitudinal sectional view showing an embodiment of this invention. In Fig. 4, 1... ladle, 4... monolithic refractory for pouring,
5... Side wall permanent lining, 6... Side wall work lining, 11... Formwork for pouring construction, 13
...Turning drive motor, 14...Motor 13
output shaft, 15... rotating shaft, 16... rotating arm, 17... tilting chute, 18... hopper,
19...Tilt cylinder, 20...Vibrator, 22...Guide table, 23...Elevating motor, 2
6...It is a belt conveyor.

Claims (1)

[Scope of utility model registration request] A hopper having an output shaft of a motor provided on the center line of a pouring formwork, a tiltable inclined chute provided at the upper end of a rotating shaft connected to the output shaft and extended above the formwork, and the hopper. A belt conveyor whose speed is controlled by a gate for introducing monolithic refractories for pouring, and a rotating arm attached to the rotating shaft that can be raised and lowered freely using a lifting motor, and during construction of the monolithic refractories for pouring. A rotating refractory pouring device comprising a vibrator, which is synchronized with the height of the rotating arm, and further includes a vibrator mounted so as to be able to slide in the radial direction of the rotating arm using a guide stand.