KR102180806B1 - Snout Device, and Apparatus for Galvanizing Steel Sheet Having The Same - Google Patents

Abstract

By enabling the height of the snout dam itself to be varied at least in response to the hot water level of the plating bath, cost reduction through equipment simplification and surface defects of the steel plate are prevented, ultimately enabling productivity improvement. A snout device capable of optimization and a steel plate plating device including the same are provided.
The snout device of the present invention includes: a snout body through which a steel plate passes and is connected to a plating bath; And a height variable dam means provided to face the inner lower portion of the snout body and having a height variable corresponding to the level of the hot water surface of the plating bath.

Description

Snout Device, and Apparatus for Galvanizing Steel Sheet Having The Same}

The present invention relates to a snout device and a steel plate plating device including the same, and more particularly, to enable the height of the snout dam itself to be varied in response to at least the spa level level of the plating bath, while the linked spa level measurement or ingot It relates to a snout device with more optimized input and a steel plate plating device including the same.

In recent years, the corrosion resistance of steel sheets has been improved, and the appearance of the steel sheets has been improved. In particular, the demand for plated steel sheets used for electronic products or automobile steel sheets is increasing.

For example, the steel sheet passes through the snout and is immersed in a plating bath filled with hot-dip zinc, and the plating thickness of the coated steel sheet is adjusted by a wiping jet sprayed from a gas wiping device while passing through it vertically.

However, the steel sheet passing through the annealing furnace is immersed in the plating bath at a higher temperature than the molten zinc. At this time, the'Fe' component comes off from the surface of the steel sheet and causes a chemical reaction with the molten zinc to generate impurities, that is, dross. And, if such dross adheres to the surface of the steel plate, it causes defects or reduces surface gloss.

Thus, the steel plate passes through the snout separating the steel plate from the dross, and the steel plate is deposited in the plating bath.In this snout, a pocket that collects dross generated at the beginning of the steel plate entering the plating bath and prevents backflow toward the steel plate Equipped with wealth and dam.

However, when the zinc ingot is put into the plating bath, it frequently occurs that the level of the bath surface is higher than that of the snout dam, and in this case, the dross on the inner bath surface of the snout dam adheres to the steel plate, causing surface defects or equipment failure. there was.

Accordingly, there has been a demand for a technique of controlling at least the height of the snout dam corresponding to the level of the hot water surface of the plating bath.

On the other hand, JP 10-2013-221212 A (2013.10.28) discloses a snout of a continuous hot-dip plating apparatus, but as the snout itself is raised and lowered from the hot water surface, the required technology for varying the height of the snout dam itself and Is irrelevant.

For example, raising and lowering the snout itself is complicated by the facility or work environment.

JP 10-2013-221212 A (2013.10.28)

The present invention has been conceived to solve the conventional problems as described above, and its object is to enable the height of the snout dam itself to be variable in response to at least the hot water level of the plating bath, thereby reducing costs through equipment simplification and It is to provide a snout device and a steel plate plating device including the same, which prevents surface defects and ultimately enables productivity improvement, while also enabling optimization of ingot input.

As a technical aspect for achieving the above object, the snout device of the present invention includes: a snout body through which a steel plate passes and is connected to a plating bath; And, a height variable dam means provided facing the inner lower part of the snout body and having a height variable corresponding to the level of the hot water surface of the plating bath at least, wherein the height variable dam means comprises: the snout Main dam members provided on both sides of the lower end of the body; And, a variable dam member provided to be variable in height on the singgi main dam member, wherein the main dam member is provided facing both sides of the snout bottom which is immersed in the plating bath and has an outlet through which the steel plate passes, and the The variable dam member may be provided to be elevating and descending through a driving means while being in close contact with the main dam member, and thus the dam height may be variable.

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More preferably, rack portions are provided on both sides of the variable dam member, and the driving means includes a driving gear fastened to the rack portion and a driving motor connected to the driving gear and disposed outside the snout body. When the motor is driven, the height of the variable dam member may be variable.

More preferably, it may further include a guide member provided to the main dam member while surrounding the variable dam member to guide the elevation of the variable dam member and prevent separation.

More preferably, the driving motor of the driving means is linked with a control unit connected to the bath level measuring device provided in the plating bath, and the height of the variable dam member may be configured to be variable in response to the bath surface level of the plating bath. .

Next, as another technical aspect, the steel plate plating apparatus of the present invention comprises: a plating bath in which the plated steel sheet is plated through immersion; The snout device according to any one of claims 3 to 6 linked to the plating bath; And a bath surface level measuring device provided to measure the bath surface level of the plating bath, and may be configured to vary the height of the dam of the snout device in response to at least the bath surface level.

Preferably, the apparatus for measuring the level of the hot water level comprises: a gas jet pipe provided with a hot water immersion part provided at one side of the plating bath; And a pressure sensor provided in the gas ejection pipe to measure the gas ejection pressure according to the level of the hot water surface, and may be configured to measure the level of the hot water surface by a difference in the ejection pressure of the gas.

More preferably, the pressure sensor provided in the hot water level measuring device is linked to the control unit, and the driving motor and the control unit are linked to enable the lifting of the variable dam member provided in the snout device to correspond to the hot water level. It may be configured to vary the height of the variable dam member.

More preferably, the gas ejection pipe is provided to be elevating at one side of the plating bath in connection with a driving source, and a gas supply pipe may be connected to one side.

More preferably, the ingot injection device connected to the plating bath; may be provided further including.

Preferably, the ingot injection device comprises: a base provided inclined on the plating bath; Driving means provided on the base and connected to the surface level measuring device; And an ingot mounting means connected to the driving means and disposed on the base to mount an ingot.

More preferably, the driving means of the ingot insertion device includes a driving motor provided on the base and a ball screw connected to the driving motor while being linked with a control unit connected with the melting surface level measuring device to correspond to the melting surface level. It can be configured to control dosing.

More preferably, the ingot mounting means is provided on a moving table to which the ball screw is screwed and both brackets connected to the moving table, and includes a fastening bolt or an operating rod of a driving cylinder fixed to the fastening groove of the ingot. Can include.

According to the present invention, instead of implementing the overall lifting and lowering of the snout, which is complicated and cumbersome in terms of the existing equipment and work, the height of the snout dam itself is changed, and it is quickly adjusted in response to the hot water level of the plating bath. It provides the effect that makes it possible.

Accordingly, the present invention is expected to provide other advantages economically by enabling cost reduction or work time reduction through facility simplification and work simplification.

In particular, it provides another effect of improving the quality of the plated product by preventing the surface defects of the steel plate due to dross on the hot water surface of the Snout Dam.

Therefore, the present invention will ultimately enable the improvement of plating productivity when plating a steel plate.

In addition, by providing a more optimized melting surface level measuring device and an ingot injection device, it is to provide another effect that enables precise and stable measurement of the melting surface level and a more optimized injection environment of the ingot.

1 is a schematic diagram showing a galvanizing process of a known steel sheet
FIG. 2 is a schematic graph showing the change in the level of the hot water surface when the zinc ingot is added to the plating bath in FIG. 1
3 is a schematic diagram showing a galvanizing process of a known steel sheet in a manner different from that of FIG. 1
4 is a schematic diagram showing the change in the level of the hot water surface when the hot-dip zinc is supplied to the plating bath from the pre-plating bath
FIG. 5 is an operational state diagram showing an environment for attaching a steel plate to a dross in a snout dam when the level of the hot water surface of the plating bath increases when the steel plate is galvanized.
6 is an overall configuration diagram showing a steel plate plating apparatus including a snout device according to the present invention
7 is a perspective view showing a snout device according to the present invention
Figure 8 is a front configuration diagram showing the present invention snout device of Figure 7
FIG. 9 is an overall configuration diagram showing a metal surface level measuring apparatus in the present invention steel plate plating apparatus of FIG.
10 is a plan view showing an ingot injection device in the present invention steel plate plating apparatus of FIG. 6

Hereinafter, the present invention will be described in detail through exemplary drawings. In adding reference numerals to elements of each drawing, it should be noted that the same elements are assigned the same numerals as possible even if they are indicated on different drawings. In addition, in describing the present invention, if it is determined that a detailed description of a related known configuration or function may obscure the subject matter of the present invention, a detailed description thereof will be omitted.

First, Fig. 1 shows a steel plate plating apparatus 100 related to the present invention.

For example, as shown in FIG. 1, the steel plate S passes through the snout 110 and the sink roll 124 and the stabilizing roll 126 of the plating bath 120 filled with the molten zinc 122 The plating thickness is adjusted by the wiping jet (J) sprayed while passing through the gas wiping device (air knife) 130.

In other words, in order to enhance corrosion resistance, the molten zinc 122 applied to the surface of the steel plate S exists in a molten state of about 450 to 460°C, and passes through the snout 110 and the plating bath 120 continuously. When applied to the steel plate.

On the other hand, as the plating operation proceeds, the amount of the hot-dip zinc 122 filled in the plating bath 120 gradually decreases as it is applied to the steel sheet, so for continuous zinc plating, as shown in FIG. 1, through the crane 140 The zinc ingot 150 in a solid state is put into the plating bath 120.

However, in general, the zinc ingot 150 in a solid state has a weight of about 1 ton, and at the moment when the zinc ingot 150 is put into the plating bath 120 through the crane 140, the hot-dip zinc in the plating bath ( The level (height) of the hot water surface 122' of 122) is increased.

In addition, the level of the molten zinc bath surface 122' increased by the injection of the zinc ingot 150 continuously decreases as the plating operation proceeds. Accordingly, as the plating operation proceeds, the level of the hot water surface 122 ′ of the molten zinc 122 of the plating bath frequently increases and then decreases.

For example, in FIG. 2, a change in the level of the hot water surface 122 ′ of the hot-dip zinc 122 during the plating operation is shown as a graph, and the level of the hot water surface of the hot-dip zinc at the time of inputting the zinc ingot 150 is instantaneously changed. You can see it rises.

That is, when 1 ton of zinc ingot 150 is put into the plating bath 120 having an area of 3.6m (W) X 5m (L), the level (height) of the hot water surface 122' of the molten zinc 120 Silver rapidly increases by about 8~9mm, and the height of the hot water gradually decreases as the plating process proceeds.

By the way, as shown in FIG. 2, it can be seen that the amount of increase in the height of the hot water surface of the molten zinc, which is increased by the injection of the zinc ingot 150, is somewhat constant, whereas the degree of reduction of the hot water surface of the molten zinc is not constant.

This is because the consumption of molten zinc varies because the working speed, plate width, and plating amount are changed frequently depending on the product being produced.

On the other hand, when the height of the hot-dip galvanized hot water surface is frequently increased or decreased as the plating operation proceeds during galvanizing of a steel sheet, the following problems may occur.

For example, when the level of the hot water surface 122' of the molten zinc 122 rises (excessively), the dross generated on the hot water surface adheres to the steel plate S, causing surface defects and attaching to the steel plate. While the amount of molten zinc produced increases, the manufacturing cost is increased, while the molten zinc cut by the gas wiping device 130 causes oxidation, thereby increasing the dross on the hot water surface.

On the contrary, when the level of the molten zinc in the plating bath (excessively) falls, the stabilizing roll 126 that controls the left and right positions of the steel sheet is exposed to the outside (atmospheric) and corroded or adversely affects the control of the amount of plating deposited. The amount of plating attached to the steel plate controlled by the ping device 130 is lowered, and thus a problem of lowering the corrosion resistance of the product may occur.

Accordingly, efforts are being made to maintain a constant level of the hot water surface 122 ′ of the hot-dip zinc 122 of the plating bath 120 when possible when galvanizing the steel sheet. For example, in FIG. Is shown.

That is, as shown in FIG. 3, instead of directly injecting the zinc ingot 150 into the plating bath 120 as shown in FIG. 1, it is based on, for example, a pre-melt pot 160.

For example, as shown in FIG. 3, a preliminary molten zinc 162 is prepared by inserting a zinc ingot 150 into the preliminary plating bath 160 with a crane 140, and the main By supplying the molten zinc in a molten state to the plating bath 120 of, the change in the height of the bath surface of the plating bath according to the injection of the zinc ingot as shown in Fig. 1 and 2 is suppressed.

On the other hand, in FIG. 4, the level (height) of the hot water surface 122 ′ in the plating bath 120 when the molten zinc previously melted in the pre-plating bath 160 is supplied to the main plating bath 120 as shown in FIG. ) It shows schematically the change.

That is, as shown in FIG. 4, compared to the case of FIG. 1 in which the zinc ingot 150 is directly injected into the plating bath 120 in a solid state, the sudden rise of the hot water surface at the time of inputting the ingot is reduced, but plating work It can be seen that there is still a change in the height of the tang-myeon according to the progress of Therefore, it can be seen that even if molten zinc is supplied to the main plating bath based on the preliminary plating bath, the change in the height of the bath surface is not eliminated at all, but is not significantly improved.

Next, FIG. 5 shows a state in which surface defects of the steel plate occur inside the snout according to the change in the level of the hot water surface.

For example, as described above, the temperature of the molten zinc 122 filled (supplied) to the plating bath 120 is about 450 to 460 °C, and the steel sheet S passing through the annealing furnace (not shown) is When entering the plating bath 120 at a higher temperature than the molten zinc, at this time, the Fe component is separated from the surface of the steel sheet, causing a chemical reaction with the molten zinc, thereby generating dross (D) impurities.

In other words, such dross (D) is a fine grain, and when attached to the surface of the steel plate (S), it causes a defect on the surface of the product or causes a side effect of deteriorating the surface gloss, and the generated dross is small in size and When they float on the bed or become heavy due to physical bonding, they may not sink to the bottom of the plating bath or rise to the surface of the bath to form a thin film, and such dross is periodically removed.

However, the dross (D) formed around the steel plate (S) entering the plating bath (120) is not easy to remove, so it is necessary to block the dross layer from approaching the steel plate (S) as much as possible. (110).

That is, as shown in FIG. 5, the outer side of the box-shaped snout 110 is formed with a wall to block the dross layer (D) from accessing the steel plate, and the dross generated at the initial entry of the steel plate inside It includes a pocket part 112 and a dam 114 for collecting (D) and preventing the backflow toward the steel plate afterwards.

For example, such a snout 110 serves to prevent the dross layer from contacting the steel plate rather than completely preventing the occurrence of dross (D).

However, in FIG. 5, when the level of the hot water surface 122' of the molten zinc 122 of the plating bath 120 is normal L1, the level of the hot water level increases to L2 by the injection of the zinc ingot 150, and the level of the hot water level increases to the snout dam 114 ), the dross layer (D) collected in the pocket part 112 of the snout 110 flows out over the dam 114 and comes into contact with the steel plate S, which in turn comes into contact with the steel plate It is to cause the surface defect of the.

Accordingly, the snout device 200 of the present invention described below is to enable the height of the snout dam itself to be variable, and based on this, a steel plate plating device 500 that implements the optimization of the ingot injection together is provided. will be.

Therefore, hereinafter, the snout apparatus 200 and the steel plate plating apparatus 500 including the same according to the present invention will be sequentially described in detail.

However, in the following description of the present embodiment, the configurations related to the plating apparatus 100 shown in FIGS. 1 to 5 are described by reference numerals of 100, and the snout apparatus 200 and the steel plate plating apparatus of the present invention ( 500) will be described with reference numerals of 200 or higher.

And, a detailed description of the same configurations related to the plating apparatus described in FIGS. 1 to 5 will be brief.

First, in FIGS. 6 to 8, a snout device 200 according to the present invention is shown.

That is, as shown in Figs. 6 to 8, in the snout device 200 of the present invention, the steel plate S passes vertically through the sink roll 124 and the stabilizing roll 126 and molten zinc ( 122) is connected to the plating bath 120 to be filled or supplied, and a snout body 210 partially immersed in molten zinc, and a pocket part 230 facing the inner lower side of the snout body 210 It is provided so that it may be configured to include a height-variable dam means 240 that has a variable height corresponding to the level of the bath surface 122 ′ of the plating bath 120.

Therefore, in the existing snout 100 described in FIGS. 1 and 3, the dam 114 is fixed, so if necessary, the height (level) of the snout dam is adjusted according to the level of the hot water surface 122 ′ of the plating bath 120 In order to do so, the snout 100 itself had to be lifted and lowered through complex equipment or work, but the snout device 200 of the present invention is based on the height variable dam means 240 forming the pocket part 230, and is simple Even with facility construction, it will be possible to change the height of the dam in response to the level of the bath surface of the plating bath 120.

On the other hand, as shown in Figure 6, the upper portion of the snout body 210 in which the lower end is immersed in the molten zinc 122 of the plating bath 120 in the snout device 200 of the present invention is an annealing furnace in a flange structure A snout connection unit 212 connected to (not shown) may be connected.

That is, as shown in FIG. 1, a snout 110 having a single body was used in the past, but in the case of the snout device 200 of the present invention, the installation of the height variable dam means 240 described in detail below For this purpose, the snout device may be composed of a snout body 210 connected to the plating bath 120 and a snout connection part 212 connected thereto in a flange structure and connected to an annealing furnace.

Next, as shown in Figs. 6 to 8, in the snout device 200 of the present invention, the height variable dam means capable of changing the height substantially corresponding to the level of the hot water surface 122 ′ of the plating bath ( In more detail, 240 may be provided as a main dam member 250 provided on both sides of the lower end of the snout body 210 and a variable dam member 260 provided to vary the height of the main dam member 250.

At this time, the main dam member 250 is provided perpendicularly to the snout bottom 212 on which the steel plate S passes and the outlet 214 to be immersed in the plating bath 120 is formed, and the main dam member 250 ) And the sidewall 210a of the snout body 210 may have a pocket portion 230 formed therein.

In addition, although not shown with a separate reference numeral, the other side wall of the side wall 210a of the snout body is provided in a sealed structure, so that the inside of the snout may be provided in a structure that blocks the atmosphere.

In this case, as shown in FIGS. 7 and 8, preferably, the central part of the main dam member 250 may have an opening 252 in which the variable dam member 260 is in close contact and height is adjusted to adjust the level. .

That is, when the level of the dam means is lowered, the opening 252 of the main dam member 250 may lower the overall height (level) of the dam means due to the opening when the variable dam member 260 descends.

Of course, since the variable dam member 260 ascends or descends while covering the opening 252 of the main dam member 250 (while covering), substantially the dam means itself through the variable dam member 260 Height can be varied.

That is, as shown in Figs. 7 and 8, the variable dam member 260 of the present invention is provided so as to be elevated through the driving means 270 while covering the central opening 252 formed in the main dam member 250 Can be.

For example, a vertical rack portion 262 is provided integrally or separately assembled on both sides of the variable dam member 260, and the driving means 270 includes a driving gear 272 fastened to the rack portion 262 and , A driving motor 274 connected to the driving gear 272 and disposed horizontally on the side wall 210a of the snout body 210 may be included.

Such a driving motor 274 may be connected through a fixing plate 276 fixed to the side wall 210a of the snout body 210 as shown in FIG. 8. Of course, although not specifically shown in the drawing, the driving motor A bracket or the like that supports 274 may be used.

Since the drive motor 274 is connected to the rack portions 262 on both sides of the variable dam member 260, a total of four may be disposed.

And, as shown in FIG. 6, the driving motors 274 are each linked to a control unit C connected to the plating bath surface level measuring apparatus 300, which will be described in detail below, so that their operation can be controlled.

In addition, the drive gear 272 of the drive motor 274 is extended vertically to both sides of the variable dam member 260 and is maintained in a state in which the gear portions are engaged with the rack portion 262 provided to have a length.

Therefore, when the operation of the driving motor 274 is stopped through the control unit C, the driving gear 272 serves as a stopper fixing the rack unit 262, and eventually the driving motor 274 is operated. In this case, the variable dam member 260 may be raised or lowered integrally with the rack portion 262.

At this time, although schematically illustrated in the drawing, the facing sidewalls 210a of the snout body 210 of FIG. 6 may be assembled with the other side walls (unsigned) of the snout body by welding or the like, which is the height of the present invention. It will enable the installation of the variable dam means 240 into the snout body.

Alternatively, the side walls 210a of the snout body 210 may be installed using other assembly brackets.

However, as shown in FIG. 8, the driving gear 272 operated by the driving motor 274 of the present invention is engaged with the upper side of the vertical rack portion 262, while the variable dam member 260 is the main dam member 250 It would be desirable to set the device to be positioned to open the opening 252 of ).

Of course, it is natural that elements of the height-variable dam means 240 are provided corresponding to the maximum ascending or descending width for height adjustment of the variable dam member.

Preferably, as shown in FIGS. 7 and 8, the variable dam member 260 and the rack portion 262 are on both sides of the main dam member 250 to guide the movement of the variable dam member 260 and prevent separation. A guide member 280 surrounding the may be installed.

The guide member 280 is a plate-bending structure, so that the variable dam member 260 is not separated from the main dam member 250 when the variable dam member 260 is raised and lowered, and the elevation is also stably performed.

Of course, the height of the guide member 280 may be formed in consideration of the maximum height of the rising or falling of the surrounding variable dam member 260.

In addition, the guide member 280 will rise and fall while maintaining close contact with the main dam member 250 of the variable dam member 260.

For example, since the variable dam member 260 does not rise or fall very frequently and continuously, even if the dam members are closely moved, damage will not occur, and such dam members Considering the temperature of the plating environment, it is resistant to heat, is not damaged by friction, and may be made of stainless steel material even against corrosion.

Next, the steel plate plating apparatus 500 based on the snout apparatus 200 of the present invention described so far is as follows.

First, as shown in Figure 6, the steel plate plating apparatus 500 according to the present invention, the plating bath 120 described above, in which the plated steel plate S is plated through immersion, and the plating bath 120 is connected. It may be provided, including the snout device 200 of the present invention described above, and a bath surface level measuring device 300 provided to measure the level of the bath surface 122 ′ of the plating bath 120.

Preferably, as shown in FIG. 6, the steel plate plating apparatus 500 of the present invention may further include an ingot injection device 400 connected to the plating bath 120.

The hot water level measuring device 300 and the ingot injection device 400 will enable more optimization of the injection of the zinc ingot.

On the other hand, in the steel plate plating apparatus 500 of the present invention, the plating bath 120 and the snout apparatus 200 are as described above.

Next, FIGS. 6 and 9 show the metal surface level measuring apparatus 300 in the steel plate plating apparatus 500 of the present invention.

That is, as shown in Figs. 6 and 9, the bath level measuring apparatus 300 of the present invention includes a gas ejection pipe 310 provided with a bath surface immersion part 312 on one side of the plating bath 120, and the gas It may be provided, including a pressure sensor 320 that is provided on the ejection pipe 310 and measures the ejection pressure of the gas according to the level of the hot water surface.

In addition, the pressure sensor 320 is connected to the control unit (C), and the control unit (C) is a driving means 270 for raising and lowering the variable dam member 260 of the snout device 200 as described above. ) Of the drive motors 274.

Therefore, as shown in Figs. 6 and 9, when the level of the hot water surface 122' of the plating bath 120 increases to a normal level, L1 -> L2, by the injection of the plating bath of the zinc ingot 150 described above. , The pressure of the gas ejected from the ejection opening 312a of the hot water immersion part 312 of the gas ejection pipe 310 increases as the liquid head increases to H1->H2, and when detected by the pressure sensor 330 It is transmitted to the connected control unit (C).

In addition, the control unit C controls the operation of the driving motor 274 of the variable dam member 260 of the snout device 200 to raise the variable dam member 260 to at least raise the level of the snout dam. It will be adjusted to the level, which will be able to block surface defects caused by contamination of the steel plate by dross described in FIG.

On the contrary, as shown in FIGS. 6 and 9, when the level of the hot water surface 122 ′ is lowered to L1->L3 while the molten zinc 122 adheres to the steel sheet due to plating of the steel sheet, the gas ejection pipe 310 The outlet 312a of the hot water immersion part 312 will be exposed to the atmosphere ('A' in FIG. 6), and in this case, the pressure of the gas ejection is rapidly lowered, and the pressure detected by the pressure sensor 330 is thus When the pressure is lowered above the set pressure, the associated control unit C operates the ingot injection device 400, which will be described in detail below, to advance the injection of the zinc ingot 150 into the plating bath 120.

And, when the zinc ingot 150 is input and the level of the molten zinc hot water 122' increases to L1 and L2, the gas pressure detected by the pressure sensor 320 increases again, and the control unit C is again Controls the operation of the height variable dam means 240 of, and when the level of the hot water level is lowered back to L3, the operation of the ingot injection device 400 will be repeatedly performed.

As a result, the steel plate plating apparatus 500 of the present invention removes surface defects of the steel plate due to the dam of the existing fixed snout described in FIG. 5, and is particularly effective in controlling the hot water level and the height of the snout dam. Will get rid of the factor.

On the other hand, as shown in Figs. 6 and 9, the gas ejection pipe 310 of the hot water level measuring device 300 is provided to be elevated in connection with a driving source 330 such as a vertical cylinder connected to the side wall of the plating bath. Can be, it will facilitate the height control of the hot water immersion portion 312 of the gas ejection pipe 310.

In addition, a gas supply pipe 340 for supplying an inert gas such as argon gas may be connected to the gas ejection pipe 310.

The gas ejection pipe 310 may be a pipe made of heat-resistant ceramics.

Therefore, compared to the level meter measuring the hot water surface at a certain height on the conventional hot water level, the apparatus 300 for measuring the hot water level of the present invention measures the level of the hot water while immersed in the immersion water surface, so that the disturbance during the measurement is less and more precise measurement Will make it possible.

Next, FIGS. 6 and 10 show an ingot injection device 400 provided to the steel plate plating apparatus 500 according to the present invention.

That is, as shown in Figs. 6 and 10, the ingot injection device 400 of the present invention includes a base 410 provided at an angle on the plating bath 120, and a base 410 provided on the base 410 and the hot water surface A driving means 420 linked to the level measuring device 300 and controlled and operated, and an ingot mounting means 430 linked to the driving means 420 and disposed on the base 410 to mount the zinc ingot 150 ) May be provided.

At this time, the base 410 may be provided to be inclined on one sidewall of the plating bath 120, and thus the zinc ingot 150 is dropped into the plating bath 120 along the inclined base 410 and put into Can be.

However, the ingot insertion device 400 of the present invention is not a method of dropping and inputting the zinc ingot 150 by a crane or the like, unlike FIG. 1, but a desired Since only the amount is gradually input, it will reduce the excessive level change of the bath surface 122 ′ of the plating bath 120.

For example, the driving means 420 of the ingot injection device 400 is a driving motor connected to the control unit C connected to the hot water level measuring device 300 and provided on the upper side of the inclined base 410 It may be provided, including 422 and a ball screw 424 connected to the drive motor. In this case, the ball screw 424 may be supported through the guide block 440 on the base 410.

In addition, as shown in FIGS. 6 and 10, the ingot mounting means 430 includes a moving table 432 through which the ball screw 424 is screwed, and a bracket 431 provided on both sides of the moving table 432. ).

And, as shown in Figure 10, the end of the bracket 431, a fastening bolt 434 inserted into a fastening groove 152 formed concave at one end of the ingot 150 is fastened, or preferably a drive cylinder ( 436 is mounted, and the operation rod 438 of the driving cylinder 436 may be fixed to the fastening groove 152 of the ingot 150.

Therefore, while the operator seats the unit zinc ingot 150 on the base 410 of the ingot insertion device 400 using a crane, etc., the fastening bolt 434 in the fastening groove 152 of the ingot 150 B. After operating the driving cylinder 436 so that the operation rod 438 is inserted and fixed, the operation of the driving motor 422 of the driving means 420 may be controlled through the control unit C.

That is, as previously described in FIG. 9, when the level of the bath surface 122 ′ of the plating bath 120 is measured by the bath surface level measurement device 300, the associated control unit C drives the ingot injection device 400 To control the operation of the motor 422.

For example, when the molten zinc 122 decreases as the steel plate plating progresses and the hot water level 122 ′ is lowered, the driving motor 422 operates and the screwed moving platform 432 and the ingot mounting bracket 431 When moving forward by a set amount, a part of the ingot 150 is melted while being immersed in its own weight in the molten zinc 122 of the plating bath 120 along the inclined base 410.

And, as shown in Fig. 10, by operating the drive cylinder 436, the operation rod 438 is separated from the fastening groove 152 of the ingot 150, or when the fastening bolt 434 is loosened, the ingot is moved to the mobile bracket 431 ) Can be completely put into the plating tank.

Meanwhile, as shown in FIG. 10, in the ingot injection device 400, the drive cylinder 436 is also linked with the control unit C to control the operation. This will make it possible to mechanically add the ingot to the plating bath completely without manual intervention.

Accordingly, according to the present invention described so far, instead of adjusting the height of the entire snout, which is complicated and cumbersome for the existing facility or work, the present invention quickly adjusts the height of the snout dam itself to the level of the water surface. It is variable and adjustable.

This enables cost reduction or work time reduction through facility simplification and work simplification, thereby providing several economic advantages.

Furthermore. At least, it fundamentally blocks the surface defects of the steel plate caused by dross on the hot water surface of the Snout Dam, and ultimately enables the improvement of productivity during the steel plate plating.

The above description is merely illustrative of the technical idea of the present invention, and those of ordinary skill in the art to which the present invention pertains will be able to make various modifications and variations without departing from the essential characteristics of the present invention.

Accordingly, the embodiments disclosed in the specification and drawings are not intended to limit the technical idea of the present invention, but to describe the technical idea, and the scope of the technical idea of the present invention is not limited by these embodiments.

The scope of protection of the present invention should be interpreted by the following claims, and all technical ideas within the scope equivalent thereto should be interpreted as being included in the scope of the present invention.

120.... plating bath 122.... molten zinc (plating solution)
150.... Ingot 200.... Snout device of the present invention
210.... snout body 212.... bottom
230.... Pocket part 240.... Height variable dam means
250.... Main dam member 260.... Variable dam member
262.... Rack part 270.... Driving means
272....drive gear 274....drive motor
280.... Guide member 300.... Water level measuring device
310.... Gas ejection pipe 312.... Hot water immersion part
320.... pressure sensor 330.... drive source
340.... gas supply pipe 400.... ingot injection device
410.... base 420.... drive
422.... Drive motor 424.... Ball screw
430.... Ingot mounting means 432.... Mobile platform
434.... Fastening bolt 436.... Drive cylinder
500.... Steel plate plating apparatus of the present invention.

Claims (13)

delete delete A snout body through which the steel plate passes and is connected to the plating bath; And,
A height variable dam means provided facing the inner lower portion of the snout body and having a height variable corresponding to the level of the hot water surface of the plating bath;
It is composed including,
The height variable dam means includes main dam members provided on both sides of the lower end of the snout body; And,
A variable dam member provided on the main dam member so as to vary in height;
Including,
The main dam member is immersed in the plating bath and provided facing both sides of the snout bottom having an outlet through which the steel plate passes,
The variable dam member, while in close contact with the main dam member, is provided so as to be elevating and descending through a driving means, so that the height of the dam is variable.
The method of claim 3,
Rack portions are provided on both sides of the variable dam member,
The driving means includes a driving gear fastened to the rack unit and a driving motor connected to the driving gear and disposed outside the snout body, and the height of the variable dam member is variable when the motor is driven.
The method of claim 3,
Snout device further comprising a guide member provided to the main dam member while surrounding the variable dam member to guide the elevation of the variable dam member.
The method of claim 3,
The driving motor provided in the driving means is linked with a control unit connected to a bath level measuring device provided in the plating bath, and a snout device configured to vary the height of the variable dam member in response to the bath surface level of the plating bath.
A plating bath in which the plated steel sheet is plated through immersion;
The snout device according to any one of claims 3 to 6 linked to the plating bath; And,
A bath level measuring device provided to measure the bath surface level of the plating bath;
Including a steel plate plating apparatus configured to vary the height of the dam of the snout device corresponding to at least the hot water level.
The method of claim 7,
The hot water level measuring device includes a gas jet pipe provided with a hot water immersion part on one side of the plating bath; And
A pressure sensor provided in the gas ejection pipe to measure a gas ejection pressure according to the level of the hot water surface;
Steel plate plating apparatus comprising a.
The method of claim 7,
The pressure sensor provided in the hot water level measuring device is connected to the control unit, and the driving motor for enabling the variable dam member to be lifted or lowered in the snout device and the control unit are linked to each other to correspond to the hot water level. Steel plate plating device configured to vary the height.
The method of claim 7,
An ingot injection device connected to the plating bath;
Steel plate plating apparatus further comprising a.
The method of claim 10,
The ingot injection device includes: a base provided inclined on the plating bath;
Driving means provided on the base and connected to the surface level measuring device; And,
An ingot mounting means connected to the driving means and disposed on the base to mount an ingot;
Steel plate plating apparatus comprising a.
The method of claim 11,
The driving means of the ingot injection device includes a driving motor provided on the base and a ball screw connected to the driving motor while being linked with a control unit connected with the melting surface level measuring device to control the injection of the ingot in response to the melting surface level. Constructed steel plate plating device.
The method of claim 12,
The ingot mounting means is a steel plate plating apparatus including a fastening bolt fixed to a fastening groove of the ingot or an operation rod of a driving cylinder provided on a moving table to which the ball screw is screwed and both brackets connected to the moving table. .

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