KR100466175B1 - Automatic feeder of mold flux in continuous caster - Google Patents

Abstract

The present invention provides a mold flux supply device that can be supplied to the molten steel by precisely controlling the amount of powder to be automatically injected, to improve the quality of the molten steel and at the same time improve the convenience of the operator It relates to a mold flux automatic injection device of a continuous casting machine.

In particular, the lower portion is formed with an inclined surface (4) for sliding the powder (1) to the discharge port (2) formed in the lower center, the inner side to measure the height of the injected powder (1) A height sensor 6 is attached, and a bucket body 10 having an immersion nozzle groove 8 formed therein to avoid collision with the immersion nozzle SEN located at the center of the mold M. )Wow; A slit support plate 14 which is fixed to the outlet port 2 formed at the lower portion of the bucket body 10 and is fixedly installed, but has a plurality of through holes 12 formed therein; A hole 16 is provided between the slit support plates 14 to be spaced apart from each other, and is formed so as to communicate with the through-hole 12 of the slit support plate 14 by the selection. A slit 20 having a rack portion 18 formed therein; A drive motor 26 connected to the bottom of the bucket body 10 and engaging the pinion 24 provided on the drive shaft 22 with the rack portion 18 of the slit 20; Between the height sensor 6 and the drive motor 26 detects the discharge rate and the discharge state of the powder (1), if the discharge amount is detected below a certain amount based on this signal to warn the worker and set a predetermined In the case of discharging at the discharge speed, the controller 28 and the controller 30 which allow the position of the hole 16 of the slit 20 to be moved through the driving motor 26 are integrally connected. do.

Description

AUTOMATIC FEEDER OF MOLD FLUX IN CONTINUOUS CASTER}

The present invention relates to a mold flux automatic injection device of a continuous casting machine, and more particularly, to provide a mold flux supply device for precisely controlling the amount of powder to be automatically supplied to the molten steel, The present invention relates to a mold flux automatic injection device for a continuous casting machine that can improve the convenience of the operator while improving the convenience.

In general, in the process of casting molten steel whose component adjustment is completed in a steelmaking plant into billets and slab slabs, a mold is a mold for solidifying molten steel to be formed.

At this time, the mold flux (hereinafter referred to as a powder) is supplied for the purpose of oxidation prevention, insulation and lubrication of molten steel in the mold, and the conventional powder dispersing apparatus has a long hose 2 as shown in FIG. 3A. A plurality of holes 3 are formed at equal intervals at the end of the feeder, and the spirals 4 are fixed to the wires 5 inside the hoses 2 to drive the motors 6 so as to drive the wires 5. ) And the spiral iron core 4 rotate together with the motor 6 so that the powder 1 contained in the hopper 7 is sprayed onto the molten steel L surface in the mold M.

However, in the conventional powder spreading device which takes such an operation, it is difficult to automatically supply additional powder when more powder 1 is required at a specific position according to the molten state of the powder 1. In addition, conventionally, by the observation of the worker by using a shovel, the selective powder (1) supply work was performed in parallel to solve the situation.

In particular, the worker's judgment was difficult to quantitatively manage the powder (1) because the large amount of spraying on the entire surface of the molten steel (L) according to the supply state of the overall molten steel (L) surface.

The conventional powder spreading device as shown in FIG. 3B simply opens and closes the opening / closing door 9 installed on the side or bottom surface of the powder bucket 8 to pour the powder 1 into the mold M at once. Sprayed on the surface of molten steel (L).

However, the conventional powder spreading device that takes this operation is frequently sprayed a large amount of powder (1) at a time, so the frequency of operation is also frequent, powder (1) in the direction of opening the opening door (9) for the powder (1) supply ) The supply is smooth, but that is, the hinge (10) or later opened part has a problem that the supply of the powder (1) is not made smoothly.

In addition, the conventional powder dispersing apparatus as shown in Figure 3c has been devised to solve the above-mentioned problems, the cylindrical spinning wheel 13 is formed with a plurality of grooves 12 formed at the lower end of the bucket body (11) It installs and this powder 13 rotates, and the powder 1 is supplied to the mold M. As shown in FIG.

However, in the conventional powder dispersing apparatus which takes such an operation, there is a possibility that the body and the immersion nozzle (SEN) of the continuous casting machine collide with each other in actual use. Molds of different widths had the inconvenient problem of making a new product.

The present invention has been made to solve the above-described problems, the object is to provide a mold flux supply device that can be supplied to the molten steel by precisely controlling the amount of powder to be automatically injected, the quality of molten steel It is to provide a mold flux automatic injection device of a continuous casting machine that can improve the convenience and at the same time improve the convenience of the operator.

The above object is, in the powder spreading device for supplying the mold flux for the purpose of oxidation prevention, insulation and lubrication of molten steel in the mold,

In the lower part, an inclined surface is formed to slide the powder into the outlet formed in the lower part of the center, and a height sensor is attached to the inside to measure the height of the injected powder. A bucket body having an immersion nozzle groove formed therein so as to avoid collision with the immersion nozzle located therein; A slit support plate which is installed and fixed while maintaining a predetermined distance from a lower portion of the outlet formed in the lower portion of the bucket body, and has a plurality of through holes formed therein; Slits are provided between the slit support plate is to be spaced apart from the slit support plate, the hole is formed to the surface of the slit support plate to communicate with the through hole of the slit support plate by the selection, and the slit is formed in the bottom portion ; A drive motor connected to the bottom of the bucket body, the pinion of the drive shaft being engaged with the rack portion of the slit; Between the height sensor and the drive motor detects the discharge speed and discharge state of the powder and warns the operator when the discharge amount is less than a certain amount based on this signal, and at the same time driving when discharge at the preset discharge speed It can be achieved by a controller for allowing the position of the hole of the slit to move through the motor, and a mold flux automatic injection device in which the controller is integrally connected.

1 is a front view showing the configuration of the mold flux automatic injection device of the continuous casting machine according to the present invention,

2 is a plan view showing the configuration of the mold flux automatic injection device of the continuous casting machine according to the present invention,

3A, 3B, and 3C are schematic views showing the configuration of a conventional powder dispersing device.

<Description of the symbols for the main parts of the drawings>

Mold (M) Molten Steel (L)

Immersion nozzle (SEN) 1: Powder

2: outlet 4: slope

6: Height sensor 8: Immersion nozzle groove

10: bucket body 12: through hole

14 slit support plate 16 hole

18: rack part 20: slit

22: drive shaft 24: pinion

26: drive motor 28: controller

30: controller

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a front view showing a configuration state of the mold flux automatic injection device of the continuous casting machine according to the present invention, Figure 2 is a plan view showing a configuration state of the mold flux automatic injection device of the continuous casting machine according to the present invention.

As shown in the lower portion is formed with an inclined surface (4) to slide the powder (1) to the outlet (2) formed in the lower center, the inside of the height of the injected powder (1) can be measured A height sensor 6 is attached to the bucket body, and a bucket body having an immersion nozzle groove 8 formed therein to avoid collision with the immersion nozzle SEN located at the center of the mold M. (10) is formed.

In addition, the slit support plate 14 having a plurality of through-holes 12 formed at the lower portion of the outlet 2 formed at the lower portion of the bucket body 10 is installed and fixed while maintaining a predetermined distance.

A hole 16 is formed on the surface of the slit support plate 14 to allow communication with the through hole 12 of the slit support plate 14. The slit 20 having the rack portion 18 formed thereon is provided at the lower portion so as to achieve sliding, and the pinion 24 provided at the drive shaft 22 is slit 20 at the lower portion of the bucket body 10. The drive motor 26 engaged with the rack portion 18 formed at the bottom is fixed.

In addition, between the height sensor 6 and the drive motor 26 detects the discharge speed and the discharge state of the powder (1), if the discharge amount is detected below a certain amount based on this signal to warn the operator and at the same time When discharge proceeds at the set discharge rate, the controller 28 and the controller 30 are configured to move the position of the hole 16 of the slit 20 through the drive motor 26.

Referring to the operation of the present invention configured as described above are as follows.

According to the present invention, the powder 1 contained in the bucket body 10 during driving is naturally lowered through the inclined surface 4 formed at the lower part of the bucket body 10 so that a plurality of through holes 12 are formed. 14) and into the molten steel L which is located in the mold M through the slit 20 in which the hole 16 which communicates with this is formed.

At this time, when the amount of powder 1 introduced into the molten steel L is initially added or less than the desired amount, the slit 20 communicates with the through hole 12 of the slit support plate 14. By adjusting the position of (16) automatically to adjust the amount of powder (1) to be injected into the molten steel (L) according to the initial set conditions, which will be described in detail as follows.

That is, when the amount of the powder (1) introduced into the molten steel as described above is more or less initially than the desired amount is detected based on the discharge speed of the powder (1) the height sensor (6) is discharged This detection signal is transmitted to the controller 28.

The controller 28 that receives the detection signal transmits a movement signal to the controller 30 to move the slit 20 so that the input amount can be adjusted according to the input condition set at the beginning for such a change situation. The controller 30, which receives the movement signal, will quickly drive the driving motor 26 based on the movement signal.

At this time, the drive motor 26 driven by the controller 30 rotates the pinion 24 engaged with the rack portion 18 of the slit 20 so as to pass through the slit support plate 14 ( The position of the hole 16 of the slit 20 communicating with 12 is automatically moved.

That is, when the input amount is smaller than the initially set loading condition, the through hole 12 of the slit support plate 14 and the centrifugal hole of the hole 16 provided in the slit 20 are moved to coincide with each other. In the case where the input amount is larger than the one input condition, the through-hole 12 of the slit support plate 14 and the centrifugal hole of the hole 16 provided in the slit 20 are displaced.

On the other hand, the controller 28 always detects the amount of powder (1) located in the bucket body 10 through the height sensor 6 and warns the worker when the discharge amount is detected below a certain amount based on this signal. Function.

The communication size taken by the through hole 12 and the hole 16 can be written as follows by modifying Bernoulli's equation.

Here, A represents the sum of the open areas of the plurality of through holes 12 and the holes 16 communicating with each other, M is the input amount per unit time (seconds), g is gravity acceleration, and h is the slit 20 to the bucket. It is the height to the powder (1) located in the body (10).

By automatically calculating a plurality of communication sizes to be opened through the formula, driving the drive motor 26 and the pinion 24 to move the slit 20 can maintain the communication size of the calculated size.

For reference, since the mold flux automatic injection device of the continuous casting machine shown and described to explain the present invention is merely an example of a basic form, the mold flux of the continuous casting machine of another type having a similar form and purpose to the present invention. It can basically include an automatic injection device.

This is because those skilled in the art can readily realize that the present invention can be variously modified and changed without departing from the technical spirit or field of the present invention provided by the following claims. .

As described above, the present invention provides a mold flux supply device for automatically supplying molten steel by precisely controlling the amount of powder to be automatically injected, thereby improving the quality of molten steel and There is an effect to improve the convenience.

Claims (1)

In the powder spreading device for supplying the mold flux for the purpose of oxidation prevention, insulation and lubrication of molten steel in the mold, The lower side is formed with an inclined surface (4) for sliding the powder (1) to the outlet (2) formed in the lower center, the height sensor for measuring the height of the powder (1) injected inside (6) is attached, the bucket body 10 is formed with a immersion nozzle groove (8) to avoid a collision with the immersion nozzle (SEN) located in the center of the mold (M) in a certain portion; ; A slit support plate 14 which is fixed to the outlet port 2 formed at the lower portion of the bucket body 10 and is fixedly installed, but has a plurality of through holes 12 formed therein; A hole 16 is provided between the slit support plates 14 to be spaced apart from each other, and is formed so as to communicate with the through-hole 12 of the slit support plate 14 by the selection. A slit 20 having a rack portion 18 formed therein; A drive motor 26 connected to the bottom of the bucket body 10 and engaging the pinion 24 provided on the drive shaft 22 with the rack portion 18 of the slit 20; Between the height sensor 6 and the drive motor 26 detects the discharge rate and the discharge state of the powder (1), if the discharge amount is detected below a certain amount based on this signal to warn the worker and set a predetermined In the case of discharging at the discharge speed, the controller 28 and the controller 30 which allow the position of the hole 16 of the slit 20 to be moved through the driving motor 26 are integrally connected. Mold flux automatic feeding device.