WO2022092592A1 - Apparatus for removing foreign substances from inside of snout in steel plate hot-dip galvanizing process - Google Patents

Apparatus for removing foreign substances from inside of snout in steel plate hot-dip galvanizing process Download PDF

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Publication number
WO2022092592A1
WO2022092592A1 PCT/KR2021/013336 KR2021013336W WO2022092592A1 WO 2022092592 A1 WO2022092592 A1 WO 2022092592A1 KR 2021013336 W KR2021013336 W KR 2021013336W WO 2022092592 A1 WO2022092592 A1 WO 2022092592A1
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WO
WIPO (PCT)
Prior art keywords
hot
dip galvanizing
impeller
snorkel
snout
Prior art date
Application number
PCT/KR2021/013336
Other languages
French (fr)
Korean (ko)
Inventor
문병원
Original Assignee
(주)스텝이엔지
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Filing date
Publication date
Priority claimed from KR1020210070989A external-priority patent/KR102422187B1/en
Application filed by (주)스텝이엔지 filed Critical (주)스텝이엔지
Publication of WO2022092592A1 publication Critical patent/WO2022092592A1/en

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    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/003—Apparatus
    • C23C2/0032—Apparatus specially adapted for batch coating of substrate
    • C23C2/00322—Details of mechanisms for immersing or removing substrate from molten liquid bath, e.g. basket or lifting mechanism
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/003—Apparatus
    • C23C2/0034—Details related to elements immersed in bath
    • C23C2/00342—Moving elements, e.g. pumps or mixers
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
    • C23C2/06—Zinc or cadmium or alloys based thereon
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/34—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the shape of the material to be treated
    • C23C2/36—Elongated material
    • C23C2/40—Plates; Strips

Definitions

  • the present invention relates to a device for removing foreign substances inside a snout, and more particularly, a hot-dip galvanizing process for a steel sheet capable of improving the galvanizing quality of the steel sheet by preventing foreign substances in the snorkel from adhering to the surface of the galvanized steel sheet. It relates to the internal foreign matter removal device of the snout.
  • a steel sheet that has undergone a cold rolling process is heat-treated in a heating furnace to make a coil with excellent formability and plating adhesion, and is then continuously sold through a payoff reel (not shown) and a welding machine (not shown). It is heat treated in a heating furnace (annealing furnace) to remove residual stress.
  • the heat-treated steel sheet flows into a hot-dip galvanizing bath filled with a plating solution, that is, hot-dip zinc, while being maintained at a temperature suitable for galvanizing.
  • the temperature of the hot-dip galvanizing bath is maintained at approximately 460°C. Since the melting point of zinc is 420°C, zinc is always maintained in a molten state in the hot-dip galvanizing bath. Therefore, the evaporated zinc fume is continuously supplied to the upper part of the hot-dip galvanizing bath.
  • the steel sheet is continuously supplied into the hot-dip galvanizing bath through the inside of the snout, and the sink roll is wound and galvanized.
  • the plating amount is controlled by an air knife or the air It enters the alloying furnace at a location away from the knife and undergoes alloying heat treatment. And it is continuously cooled in the air cooling table and goes through the process of advancing toward the top roll.
  • the amount of zinc evaporation inside the snout varies depending on the size of the hot-dip galvanizing bath, but in the case of the hot-dip galvanizing bath for plating coiled steel sheets, it is known that a fairly large amount of evaporation occurs, about 1-2 liters per hour.
  • Ash which is the zinc evaporation product, is attached to the inner surface of the snout as it diffuses to the upper part of the snout, and falls to the surface of the hot water in the snout by its own weight. Ash falling to the hot water surface is attached to the surface of the plated steel sheet while floating or forms intermittent or continuous bands in the steel sheet moving direction, thereby degrading the galvanizing quality of the steel sheet.
  • the tip of the snout is immersed in a hot-dip galvanizing tank, and a dam having a rectangular height is installed inside the tip along the edge of the steel plate. It is provided and is connected to a metal pump mounted on the side of the snout to discharge foreign substances generated when the steel sheet enters the hot-dip galvanizing bath to the outside of the dam.
  • Korean Patent No. 1806078 discloses a metal pump of Snout
  • Korean Patent No. 1842168 discloses a dross removal device for galvanizing lines.
  • the posted snout metal pump includes: a housing provided with a discharge pipe at the lower part of the snout; A motor is installed at the open upper end of the housing and coupled to seal the inside of the housing, a screw rotating shaft is connected to a drive shaft of the motor inside the housing, and a screw is installed at the end of the screw rotating shaft to provide a screw bundle disposed in the discharge pipe .
  • the conventional metal pump configured as described above has a problem in that the outside air flows in because the housing is exposed to the upper side of the molten metal. will increase
  • the posted snout device is a snout body connected between a heating furnace and a plating bath filled with a plating solution and a plated steel sheet passing therein, and a snout body on both sides with respect to the plated steel sheet at the end of the plating bath side of the snout body. and a first dam device and a second dam device installed independently of each other, and a metal pump movably installed in a position adjacent to the first dam device and the second dam device on the outside of the snout body.
  • the present invention is to solve the conventional problems as described above, and during the steel sheet hot-dip galvanizing process, foreign substances floating on the molten metal surface in the snout are moved to the steel sheet in the snout and attached to the steel sheet melting.
  • An object of the present invention is to provide a device for removing foreign substances inside the snout in the galvanizing process.
  • Another object of the present invention is to prevent oxidation of the steel sheet and oxidation of the molten metal caused by the introduction of outside air into the snout by the hot-dip galvanizing unit, and foreign substances around the bubbles introduced together with the hot-dip galvanizing solution are removed from the hot-dip galvanizing tank.
  • An object of the present invention is to provide a device for removing foreign substances inside the snout in the hot-dip galvanizing process for steel sheet, which can prevent contamination of the steel sheet.
  • the device for removing foreign matter inside the snout in the hot-dip galvanizing process of the present invention is to prevent oxidation by enclosing the steel sheet flowing into the hot-dip galvanizing bath with the end submerged in the hot-dip surface of the hot-dip galvanizing bath.
  • the snorkel part and the snorkel part are wrapped so as to be spaced apart from the steel plate by a predetermined distance from the end of the snorkel part, and the hot-dip galvanizing solution in the hot-dip galvanizing tank overflows to the inner circumferential side of the snorkel part to prevent foreign substances falling on the molten water surface in the snorkel part from adhering to the steel plate.
  • a snout including a dam unit having a portion;
  • the hot-dip galvanizing solution installed in the snorkel part, which is lower than the hot-dip galvanizing solution, so that the hot-dip galvanizing solution overflowing the dam forming part of the dam unit and foreign substances floating thereon can be discharged into the hot-dip galvanizing tank outside the snorkel part.
  • an induction guide part located inside the dam and connected by an inlet to the snorkel part so as to discharge the molten zinc overflowing the dam forming part and formed with an impeller insertion hole into which a drive shaft or an impeller is inserted;
  • a pump housing installed on the lower side of the guide part
  • the diameter of the impeller insertion port and the discharge part is formed to be larger than the diameter of the impeller, and the external inflow control part is fixedly installed on the drive shaft.
  • molten zinc induction discharge part installed in the discharge part of the pump housing to guide the hot-dip galvanizing solution discharged from the discharge part of the pump housing to a side surface or an upper surface side.
  • a position of the inlet connecting the induction guide part and the snorkel part is located on a lower side than the upper end of the dam forming part, and the induction guide part is located on a lower side than the upper end of the dam forming part of the dam unit.
  • the device for removing foreign substances inside the snout in the hot-dip galvanizing process of the present invention is a snorkel part for preventing oxidation by enclosing the steel sheet flowing into the hot-dip galvanizing bath with the end submerged in the molten metal surface of the hot-dip galvanizing bath. and a dam forming part wrapped around the end of the snorkel part so as to be spaced apart from the steel plate by a predetermined distance and allowing the hot-dip galvanizing solution in the hot-dip galvanizing bath to overflow to the inner circumferential side of the snorkel part to prevent foreign substances falling on the hot water surface in the snorkel part from adhering to the steel plate.
  • Snout including a dam unit;
  • the hot-dip galvanizing solution installed in the snorkel part, which is lower than the hot-dip galvanizing solution, so that the hot-dip galvanizing solution overflowing the dam forming part of the dam unit and foreign substances floating thereon can be discharged into the hot-dip galvanizing tank outside the snorkel part.
  • an induction guide part located inside the dam and connected by an inlet to the snorkel part so as to discharge the molten zinc overflowing the dam forming part and formed with an impeller insertion hole into which a drive shaft or an impeller is inserted;
  • a pump housing installed on the lower side of the induction guide part, an impeller installed at an end of a drive shaft rotated by the motor and installed inside the pump housing, and an induction guide part installed in the induction guide part corresponding to the pump housing and a molten zinc discharging unit including an upper pumping part for pumping the molten galvanizing solution in the part toward the molten water surface.
  • the upper pumping part of the molten zinc discharge unit includes an upper pump housing installed on the upper side of the induction guide part corresponding to the pump housing, and an upper impeller installed on the drive shaft and installed inside the upper pump housing includes
  • an upper impeller and an impeller are installed on the drive shaft, and the discharge directions of the molten galvanizing solution pumped by the upper impeller and the impeller are installed differently from each other.
  • the device for removing foreign substances inside the snout in the hot-dip galvanizing process for steel sheet according to the present invention pumps the hot-dip galvanizing solution and foreign substances flowing into the snorkel part to the molten metal of the snorkel part hot-dip galvanizing bath. It can prevent inflow into the plating bath.
  • the apparatus for removing foreign substances from the molten metal in the hot-dip galvanizing process of the steel sheet according to the present invention enables coupling and separation of the impeller through the impeller insertion hole formed on the upper part of the induction guide, so that the maintenance of the molten zinc discharging unit is easy.
  • FIG. 1 is a side cross-sectional view showing an internal foreign material removal device of a snout in a steel sheet hot-dip galvanizing process according to the present invention
  • FIG. 2 is a cross-sectional view of the molten metal foreign material removal device in the hot-dip galvanizing process of the steel sheet shown in FIG. 1;
  • 3 to 7 are cross-sectional views showing molten zinc induced discharge units for changing the discharge direction discharged through the discharge unit of the molten zinc discharge unit;
  • FIGS. 8 is a cross-sectional view showing an extract of the molten zinc discharging unit shown in FIGS. 1 and 2;
  • 9 and 10 are cross-sectional views showing other embodiments of the molten zinc discharging unit according to the present invention.
  • 11 to 14 are cross-sectional views showing an embodiment of coupling parts connecting the snorkel part and the induction guide part;
  • 15 to 17 are cross-sectional views showing a state in which the external inflow control unit of the molten zinc discharge unit is installed on the drive shaft;
  • 19 is a side cross-sectional view showing another embodiment of the apparatus for removing foreign matter inside the snout in the hot-dip galvanizing process for steel sheet according to the present invention.
  • 20 to 22 are cross-sectional views showing still other embodiments of the molten zinc discharging unit according to the present invention.
  • 1 to 2 show an example of an apparatus for removing foreign matter inside a snout in a steel sheet hot-dip galvanizing process according to the present invention.
  • the internal foreign material removal device 10 of the snout in the hot-dip galvanizing process according to the present invention is installed in the hot-dip galvanizing tank 150 and the steel sheet 200 heat-treated at a high temperature is exposed to the atmosphere. prevent surface oxidation.
  • it has a structure for preventing the occurrence of surface defects as ash formed by condensing the vapor of the hot-dip galvanizing solution is attached as a foreign material to the surface of the steel sheet 200 .
  • the internal foreign material removal device 10 of the snout has an end submerged in the hot water surface 1 of the hot-dip galvanizing bath 150 and the steel sheet 200 is introduced into the hot-dip galvanizing bath 150.
  • a snout 40 is provided to prevent oxidation by enclosing it.
  • a snorkel part 20 On the lower side of the snout 40 , a snorkel part 20 , the lower end of which is immersed in the hot-dip galvanizing tank 150 , is provided.
  • the snorkel part 20 extends upwardly inside to be adjacent to the outer circumferential surface of the steel plate 200 passing through the snorkel part 20 from the lower end thereof to prevent foreign substances falling on the tang surface in the snorkel part 20 from adhering to the steel plate. It includes a dam unit (30).
  • the hot-dip galvanizing solution installed in the snorkel part 20 and overflowing the dam forming part 32 of the dam unit 30 is pumped into the hot-dip galvanizing tank 150 to float inside the snorkel part 20 .
  • a molten zinc discharging unit 50 is provided to prevent foreign substances from adhering to the steel sheet.
  • the snorkel part 20 constituting the snout 40 is installed on the side of the hot-dip galvanizing tank 150 between the heat treatment furnace (not shown) and the hot-dip galvanizing tank 150 and heated for heat treatment ( 200) has a structure that surrounds the steel plate 200 introduced into the hot-dip galvanizing bath 150 guided by rollers to prevent oxidation in contact with air.
  • the snout 40 may be formed by combining unit members having a rectangular shape of a square tube and the snorkel unit 20 .
  • the snout 40 may further include a separate actuator (not shown) that rotates a part of the snorkel part 20 at the end to be immersed in or lifted from the hot-dip galvanizing bath 150 .
  • the dam unit 30 may be integrally formed with the snorkel unit 20 or may be separately manufactured and combined. As shown in FIGS. 1 and 2, the dam unit 30 passes through the inside of the snorkel unit 20, that is, the steel sheet introduced into the hot-dip galvanizing bath 150 through the inner space of the snorkel unit 20. A storage space of molten zinc overflowing through the steel plate inlet 31 by connecting the dam forming part 32 forming the steel plate inlet 31 and the lower end of the dam forming part 32 and the lower end of the snorkel part 20 A chamber forming part (33) forming a (34) is provided.
  • the upper end of the dam forming part 32 of the dam unit 30 has the same height as the hot water surface 1 in the snorkel part 20 while the snorkel part 20 is immersed in the hot-dip galvanizing tank 150, or located in a relatively low position.
  • the molten hot-dip galvanizing solution 2 in the hot-dip galvanizing tank 150 flows in through the steel plate inlet 31 through which the steel plate 200 passes, overflows the dam forming part 32, and the chamber forming part 33 is stored in the storage space 34 formed by
  • the dam unit 30 is not limited by the above-described embodiment, and floating matter or foreign substances including ash in the snorkel unit 20 are attached to the surface of the steel plate 200 through the steel plate inlet 31 . It is possible if the structure is such that the hot-dip galvanizing solution passing through the steel plate inlet 31 can flow away from the surface of the steel plate 200 to be plated.
  • the dam forming portion may be formed in an independent rectangular shape in the central portion of the snorkel portion or may be formed parallel to the front and rear surfaces of the steel plate.
  • at least one guide discharge groove ( 32a) may be formed (see FIG. 5).
  • the molten zinc discharging unit 50 overflows the dam forming part 32 of the dam unit 30 and drains the molten zinc plating solution 2 stored in the storage space 34 formed by the chamber forming part 33 above. It is discharged to the hot-dip galvanizing bath 150 so that the hot-dip galvanizing solution 2 in the hot-dip galvanizing bath 150 can be continuously introduced through the steel plate inlet 31 .
  • the molten zinc discharge unit 50 is installed in the snorkel unit 20 and overflows the dam forming unit 32 of the dam unit 30 to discharge the molten zinc stored in the storage space 34.
  • At least one inflow It has a part 51 and an inner space 56 and a guide guide part 55 installed to be located inside the molten metal at a predetermined depth from the molten metal surface.
  • the guide part 55 is installed in the snorkel part 20 at a position lower than the height of the upper surface of the dam forming part 32 of the dam unit 30 . This is to block the inflow of external air through the impeller insertion hole 52 of the induction guide part 55 .
  • An impeller insertion hole 52 into which the drive shaft 63 or the impeller 64 is inserted is formed on the upper surface of the induction guide part 55, and a pump housing 61 is formed on the lower surface of the induction guide part 55.
  • the impeller insert 52 may have the same diameter or a larger diameter as that of the pump housing 61 , and the impeller insert 52 may be larger than the diameter of the impeller 64 installed on the drive shaft 63 . It may have a large diameter, but is not limited thereto.
  • the discharge part 61a of the pump housing 61 may be formed in a cylindrical shape substantially the same as the diameter of the impeller insertion hole 52, but is not limited thereto. And it is preferable that the impeller 64 installed in the pump housing 61 be installed at a position relatively lower than the height of the upper end of the inlet part 51 .
  • the hot-dip galvanizing solution 2 discharged from the outlet 61a of the pump housing 61 is applied to the discharge part 61a of the pump housing 61 in 150) may further include a molten zinc induction discharge unit 69 for guiding to the side or the hot water surface side.
  • an opening 61c in the form of a semicircle, square, or rhombus is formed on the outer peripheral surface of the end side of the discharge port 61a of the pump housing 61 to diversify the discharge direction of the hot-dip galvanizing solution 2 and can reduce the discharge resistance.
  • the pump housing 61 is located inside the pump housing 61 through the impeller insertion hole and the impeller 64 installed on the drive shaft 63 driven by the motor 62 installed on the side of the snout is installed. .
  • the impeller insertion hole 52 is blocked, and the outside air and the molten galvanizing solution 2 on the outside of the snout are placed through the impeller insertion hole 52 into the inner space of the induction guide part 55 ( 56) and an external inflow control unit 66 for blocking the inflow into the inside of the pump housing 61 are installed.
  • the external inflow control unit 66 may be formed of a plate-shaped member, or may be formed of an upper plate of the induction guide unit 55 .
  • the motor 62 for rotating the drive shaft may be installed on the snorkel unit 20 or the support members 62a installed on the upper surface of the external inflow control unit 66 or the induction guide unit 55 .
  • the inner space 56 of the induction guide part 55 installed inside the molten metal of the hot-dip galvanizing bath 150 is the impeller insertion port 52 .
  • the hot-dip galvanizing solution (2) that is introduced through the inlet part (51) connecting the storage space (34) of the dam unit (30) is prevented from being introduced into the snout (40). It is preferable to allow the bubbles contained in the to flow to the upper side so that they can be collected.
  • the discharge rate of the hot-dip galvanizing solution discharged through the inlet part 51 is high, the water level of the hot-dip galvanizing solution 2 in the storage space 34 is lowered, so that the bubbles flowing into the inlet part 51 are lowered. It is preferable to flow into the upper portion of the inner space of the induction guide part 55 and to be nested. Do.
  • a tubular gas exhaust unit 57 for discharging the air collected in the inner space of the guide part 55 to the inside of the hot-dip galvanizing or the outside of the hot water surface is further provided.
  • the gas exhaust unit 57 discharges the air collected in the inner space of the induction guide part 55 to the inside of the hot-dip galvanizing or to the outside of the hot water surface on the upper surface side of the induction guide part 55, as shown in FIG. It may be made of a gas discharge pipe (57a) for
  • the inlet part 51 is another type of induction discharge pipe connecting the lower surface of the chamber forming part 33 of the dam unit 30 and the side or lower surface of the induction guide part 55 as shown in FIGS. 9 and 10 ( 58) may also be used.
  • the inlet part 51 connecting the induction guide part 55 and the storage space 34 of the dam unit 30 may have a structure that connects the chamber forming part 33 and the lower surface of the induction guide part 55 . there is.
  • the guide guide part 55 can be smoothly coupled and separated from the coupling.
  • a unit 100 is further provided.
  • the guide discharge pipe 58 is divided, and flanges 101 and 102 for coupling are installed at the divided ends, respectively, and an elastic gasket ( 103) may be of a structure coupled by bolts in the installed state, and as shown in FIGS. 12 and 13 , the expansion pipe 110 or a relatively thin metal pipe 111 is connected to the induction discharge pipe 58 by a flange. It may have a connected structure.
  • the guide discharge pipe 58 is divided, and the fixed pipe 121 is installed on the divided guide discharge pipe on one side, and the other side of the divided guide discharge pipe, that is, the guide guide part.
  • It may be made of a structure in which a transfer pipe 122 that is movably coupled along the fixed pipe 121 to the guide discharge pipe installed on the side is installed.
  • the installation of the coupling part 100 to the induction part 51 as described above facilitates the coupling and separation of the snorkel part 20 and the induction guide part 55 of the molten zinc discharging unit 50 .
  • the external inflow control part 66 installed in the induction guide part 55 has a through hole 66a into which the driving shaft 63 is inserted in the central part so as to block the impeller insertion hole 52 of the pump housing 61 is formed. and has a larger diameter than the diameter of the impeller insert (52) so as to block the impeller insert (52).
  • the external inflow control unit 66 may be installed on the driving shaft 63 and rotated together with the driving shaft 63 as shown in FIGS. 15 to 17 . In this case, it is shown in FIG. 16 to prevent the hot-dip galvanizing solution 2 in the hot-dip galvanizing bath 150 from flowing into the impeller insertion hole 52 of the induction guide part 55 through the impeller insertion hole 52. As described above, the edge of the impeller insertion hole 52 and the edge of the external inflow control portion 66 may be formed with a skirt portion 66b of a predetermined width.
  • the molten galvanizing solution 2 is pumped to the upper driving shaft 63 of the external inflow control unit 66 by the rotation of the driving shaft 63 and the impeller 64 to prevent the vortex from being generated and
  • a vortex prevention member 70 is further provided to prevent the inflow of air bubbles into the inner space 56 of the induction guide portion 55 and oxidation and erosion of the drive shaft 63 when generated.
  • the vortex prevention member 70 may be formed of a tube type, a disk type, a truncated cone type, etc. fitted to the drive shaft 63, but is not limited thereto and has a structure capable of preventing the occurrence of a vortex. For example, as shown in FIG.
  • a cylindrical cover 75 supported by the motor 62 surrounds the drive shaft 63 and the end thereof is submerged in the hot water surface or may be configured to be slightly spaced apart from the hot water surface.
  • an inert gas such as nitrogen may be supplied to the inside of the cover 75 .
  • the swirl prevention member 70 and the cover 75 may be made of a material such as carbon or ceramic to which molten zinc is not attached.
  • FIG. 19 Another embodiment of the molten zinc discharging unit 50 is shown in FIG. 19 .
  • the same reference numerals as in the above embodiment designate the same components.
  • the induction guide part 55 pumps the hot-dip galvanizing solution 2 overflowing the dam forming part 32 of the dam unit 30 into the hot-dip galvanizing tank 150 outside the snorkel part 20 to form a dam. It is located inside the molten metal lower than the molten metal surface so that foreign substances contained in the hot-dip galvanizing solution overflowing the part 32 can be pumped into the hot-dip galvanizing bath 150, and the storage space 34 of the dam unit 30 and the inlet 51 are connected.
  • a support hole 91 is formed on a lower surface of the guide part 55 .
  • the induction guide part 55, the external inflow control part 66 and the housing 61, the motor 62, the drive shaft 63, and the impeller 64 are integrally configured with the pump 90 is installed.
  • the pump housing 92 of the pump 90 has a cylindrical shape, and a flange part 93 is formed thereon to be supported on the edge of the support hole 91 .
  • a support member 94 is installed on the flange portion 93 of the pump housing 92 .
  • the support member 94 extends to the upper portion of the hot water surface through the impeller insertion hole 52 formed on the upper surface of the guide part 55 to support the motor 62 .
  • the external inflow control part 66 is supported on the support member 94 .
  • An impeller 64 installed inside the pump housing 92 is installed at an end of the drive shaft 63 rotated by the motor 62 .
  • the inlet portion 51 connecting the guide portion 55 is located at a lower position than the upper end of the dam forming portion (32).
  • the drive shaft 63 and the rotation shaft of the motor 62 are connected by a coupler 97, in the coupler 97 to prevent heat from the drive shaft 63 from being transmitted to the rotation shaft of the motor 62.
  • Insulation material 98 for the may be installed.
  • the induction guide part 55 pumps the hot-dip galvanizing solution 2 overflowing the dam forming part 32 of the dam unit 30 into the hot-dip galvanizing tank 150 outside the snorkel part 20 . It is located inside the molten metal lower than the molten metal surface so that foreign substances contained in the hot-dip galvanizing solution overflowing the dam forming part 32 can be pumped into the hot-dip galvanizing tank 150 , and the storage space of the dam unit 30 . (34) and connected by an inlet (51).
  • a pump housing 61 is formed on the lower surface of the induction guide part 55 , and is located in the pump housing 61 at the end of the drive shaft 63 rotated by the pump 62 to provide an inlet part 51 .
  • An impeller 64 for discharging the hot-dip galvanizing solution 2 flowing into the induction guide unit 55 through the discharge unit 61 is installed.
  • the impeller insertion port 52 corresponding to the pump housing 61 is provided with an upper pumping part 80 for discharging the molten infant infant plating solution 2 flowing in through the induction guide part 55 to the upper part.
  • the upper pumping part 80 has an upper pump housing 81 installed on the upper surface of the induction guide part 55 corresponding to the pump housing 61 .
  • the upper pump housing 81 has a cylindrical shape, and a support flange 82 is formed on the upper end in a radial direction.
  • the diameter of the pump housing 61 and the diameter of the upper pump housing 81 are preferably formed to have the same diameter.
  • an upper impeller 83 rotated by the drive shaft 63 is installed in the upper pump housing 81 to apply the hot-dip galvanizing solution 2 in the induction guide part 55 into the hot-dip galvanizing bath 150 . It will be pumped to the side of the bath.
  • the diameter of the upper pump housing 81 and the upper impeller 83 is made smaller than the diameter of the impeller 64, so that it can be mainly discharged through the outlet 61a of the pump housing 61. can make it
  • the diameter of the upper pump housing 81 and the diameter of the upper impeller 83 are the diameters of the pump housing 61 and the impeller 64 positioned on the lower side of the induction guide part 55 .
  • the lower part of the snorkel part 20 is placed in a position lower than the water level of the hot water surface 1 so that the end of the snorkel part 20 is a certain portion in the molten metal of the hot-dip galvanizing bath 150 .
  • the hot-dip galvanizing solution 2 in the hot-dip galvanizing tank 150 overflows the dam forming part 32 and is stored in the storage space 34 partitioned by the chamber forming part 33 .
  • the pump housing 61 in which the induction guide part 55 and the impeller 64 formed in the snorkel part 20 are installed is the hot-dip galvanizing solution 2 drawn in from the hot water surface of the hot-dip galvanizing bath 150 to a predetermined depth. ) is immersed in
  • the hot-dip galvanizing solution 2 flowing into the storage space 34 after being introduced through the steel plate inlet 31 of the dam unit 30 is the gas containing the ash inside the snout and the inlet 51 . It may be introduced into the inner space 56 of the induction guide part 55 through the .
  • the gas (bubbles) contained in the hot-dip galvanizing solution 2 introduced into the inner space of the induction guide part 55 is separated and moved upward, and the hot-dip galvanizing solution 2 is discharged through the discharge part 61a. is emitted through Accordingly, it is possible to prevent the gas inside the snout from riding on the hot-dip galvanizing solution 2 pumped by the impeller and flowing into the molten metal in the hot-dip galvanizing tank 150 , that is, the hot-dip galvanizing solution.
  • the inflow of outside air is basically prevented by the induction guide part 55 being submerged in the hot water surface and provided with the vortex prevention member 70, etc., but the inflow through the impeller insertion hole 52 or the through hole 66a
  • the external gas that can be formed is discharged toward the hot water surface through the tubular gas discharge member 57 located above the inner space of the induction guide part 55 . Accordingly, oxidation of the steel sheet or the hot-dip galvanizing solution can be prevented by air, that is, bubbles riding on the pumped hot-dip galvanizing solution 2 as described above, and these bubbles are introduced into the snorkel unit 20 for plating. It can be prevented from being attached to the surface of the steel plate 200 to be combined and causing bonding.
  • a vortex prevention member 70 is installed on the drive shaft 63 at the portion in contact with the hot water surface, so that a part of the hot-dip galvanizing solution 2 passes through the through hole 66a to the guide part.
  • a vortex prevention member 70 In addition to blocking the inflow into the inner space (56) of the (55), it is possible to prevent the occurrence of a vortex due to the rotation of the drive shaft (63). In addition, it is possible to prevent the hot-dip galvanizing solution 2 from rising along the drive shaft 63 .
  • the pump housing 61 and the induction guide part 55 are not separated from the snorkel part 20, but the induction guide part 55 and the external inflow control part 66 are removed. It is possible to separate the impeller inserted into the pump housing 61 like the drive shaft by separating it through the impeller insertion hole 52 . Therefore, maintenance of the molten zinc discharge unit is easy.
  • the upper pumping part 80 is formed on the upper surface side of the induction guide part 55, and the impeller housing 61 for discharge and the impeller on the driving shaft of the motor are formed on the lower side. Since it is installed, the hot-dip galvanizing solution 2 introduced into the induction guide portion 55 through the inlet portion 51 is discharged to the upper and lower sides of the induction guide portion 55 . Accordingly, it is possible to improve the discharge characteristics of the hot-dip galvanizing solution 2 in the induction guide part 55 and to fundamentally prevent the inflow of outside air from the upper surface side of the induction guide part 55 to the inner space 56 . .
  • the existing impeller shaft side The occurrence of defects in the steel sheet due to inflow of outside air into the snout, which is generated by being configured to communicate with the outside air, and outside air in the form of air bubbles flowing into the hot-dip galvanizing bath 150 together with the hot-dip galvanizing solution and oxidation of the plating solution It is possible to prevent foreign substances contained in the surrounding air bubbles from adhering to the surface of the plated steel sheet and causing defects.

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Abstract

The present invention provides an apparatus for removing foreign substances from a molten steel sheet in a steel plate hot-dip galvanizing process, the apparatus comprising: a snout including a snorkel part for preventing oxidation by enclosing a steel sheet of which end is immersed in a molten metal surface of a hot-dip galvanizing bath and is introduced into the hot-dip galvanizing bath, and a dam unit having a dam forming part that, from the end of the snorkel part, surrounds the steel plate so as to be spaced apart therefrom by a predetermined distance and prevents foreign substances falling on the molten metal surface in the snorkel part from adhering to the steel plate by allowing a hot-dip galvanizing solution in the hot-dip galvanizing bath to overflow toward the inner peripheral surface of the snorkel part; an guide part which is installed in the snorkel part and is located in the hot-dip galvanizing solution that is lower than the molten metal surface such that the hot-dip galvanizing solution overflowing the dam forming part of the dam unit and foreign substances floating thereon can be discharged into a hot-dip galvanizing bath outside the snorkel part, and which is connected by an inlet to the snorkel part, and provided with an impeller insertion port into which a driving shaft or an impeller is inserted such that molten zinc overflowing the dam forming part can be discharged; a pump housing provided on the lower side of the guide part; and a molten zinc discharging unit including an impeller located inside the pump housing and provided at the end of the drive shaft driven by a motor, and an external inflow control unit that blocks the impeller insertion port provided in the guide part so as to control the blocking of the hot-dip galvanizing solution and external air from flowing into the inside of the pump housing through the impeller insertion port.

Description

강판 용융아연도금 공정에서의 스나우트의 내부 이물제거장치Internal foreign matter removal device of Snout in the steel plate hot dip galvanizing process
본 발명은 스나우트의 내부 이물제거장치에 관한 것으로서, 더욱 상세하게는 스노클부 내의 이물질이 아연도금 되는 강판의 표면에 부착되는 것을 방지하여 강판의 아연도금 품질을 향상시킬 수 있는 강판 용융아연도금 공정에서의 스나우트의 내부 이물제거장치에 관한 것이다. The present invention relates to a device for removing foreign substances inside a snout, and more particularly, a hot-dip galvanizing process for a steel sheet capable of improving the galvanizing quality of the steel sheet by preventing foreign substances in the snorkel from adhering to the surface of the galvanized steel sheet. It relates to the internal foreign matter removal device of the snout.
일반적으로, 용융아연도금공정은 냉간압연공정을 거친 강판을 가열로에서 열처리하여 성형성과 도금 밀착성이 우수한 코일로 만든 후, 페이오프릴(미도시)과 용접기(미도시)를 통하여 연속 통판되면서, 잔류응력을 제거 하도록 가열로(소둔로)에서 열처리 된다. 열처리된 강판은 아연도금에 적당한 온도로 유지되는 상태에서, 도금액 즉, 용융아연이 충진된 용융아연도금조로 유입된다. In general, in the hot-dip galvanizing process, a steel sheet that has undergone a cold rolling process is heat-treated in a heating furnace to make a coil with excellent formability and plating adhesion, and is then continuously sold through a payoff reel (not shown) and a welding machine (not shown). It is heat treated in a heating furnace (annealing furnace) to remove residual stress. The heat-treated steel sheet flows into a hot-dip galvanizing bath filled with a plating solution, that is, hot-dip zinc, while being maintained at a temperature suitable for galvanizing.
용융아연도금조의 온도는 대략 460℃를 유지하게 되는데, 아연의 융점이 420℃이므로 용융아연도금조 내에서 아연은 항상 용융상태에 유지된다. 따라서 용융아연도금조 상부로 증발된 아연 흄이 지속적으로 공급된다. The temperature of the hot-dip galvanizing bath is maintained at approximately 460°C. Since the melting point of zinc is 420°C, zinc is always maintained in a molten state in the hot-dip galvanizing bath. Therefore, the evaporated zinc fume is continuously supplied to the upper part of the hot-dip galvanizing bath.
용융아연도금을 위해서 강판은 스나우트의 내부를 통해서 용융아연도금조 내로 연속적으로 공급되어 싱크롤을 감아 돌아 나오면서 아연도금이 행해진 후, 에어나이프에 의해 도금량이 제어되거나, 도금층의 합금화를 위하여 상기 에어나이프로부터 떨어진 위치에 있는 합금화로에 진입되어 합금화 열처리가 된다. 그리고 연속적으로 에어 냉각대에서 냉각되어 탑롤을 향해 전진되는 과정을 거치게 된다.For hot-dip galvanizing, the steel sheet is continuously supplied into the hot-dip galvanizing bath through the inside of the snout, and the sink roll is wound and galvanized. After that, the plating amount is controlled by an air knife or the air It enters the alloying furnace at a location away from the knife and undergoes alloying heat treatment. And it is continuously cooled in the air cooling table and goes through the process of advancing toward the top roll.
이러한 과정에서 스나우트 내부에서 아연 증발량은 용융아연도금조의 크기에 따라 차이는 있으나 코일상의 강판을 도금하기 위한 용융아연도금조의 경우, 시간당 1-2ℓ정도로서, 상당히 많은 양의 증발이 일어나는 것으로 알려져 있다. In this process, the amount of zinc evaporation inside the snout varies depending on the size of the hot-dip galvanizing bath, but in the case of the hot-dip galvanizing bath for plating coiled steel sheets, it is known that a fairly large amount of evaporation occurs, about 1-2 liters per hour.
이러한 아연 증발물인 애쉬(ash)는 스나우트 상부까지 확산됨으로써 스나우트의 내면에 부착되고, 자중에 의해 스나우트 내의 탕면으로 낙하하게 된다. 탕면으로 낙하 된 애쉬는 부유하면서 도금되는 강판의 표면에 부착되거나 강판 진행 방향으로 간헐적 또는 연속적인 띠를 형성하게 되어 강판의 아연도금 품질을 저하시키는 문제가 있다. Ash (ash), which is the zinc evaporation product, is attached to the inner surface of the snout as it diffuses to the upper part of the snout, and falls to the surface of the hot water in the snout by its own weight. Ash falling to the hot water surface is attached to the surface of the plated steel sheet while floating or forms intermittent or continuous bands in the steel sheet moving direction, thereby degrading the galvanizing quality of the steel sheet.
이러한 문제점을 감안하여 상기 스나우트는 끝단이 용융아연도금조에 잠기고, 끝단의 내부에는 강판의 테두리를 따라 사각형태의 높이를 갖는 댐이 설치되며, 댐의 주벽과 스나우트의 끝단 주벽 사이에는 흡입관이 구비되어 강판이 용융아연도금조에 인입할 때 발생하는 이물질을 댐의 외부로 배출할 수 있도록 스나우트의 측면에 장착된 메탈펌프와 연결된다. In consideration of this problem, the tip of the snout is immersed in a hot-dip galvanizing tank, and a dam having a rectangular height is installed inside the tip along the edge of the steel plate. It is provided and is connected to a metal pump mounted on the side of the snout to discharge foreign substances generated when the steel sheet enters the hot-dip galvanizing bath to the outside of the dam.
대한민국 등록특허 제 1806078호에는 스나우트의 메탈펌프가 게시되어 있으며, 대한민국 등록특허 제 1842168호에는 아연도금라인용 드로스 제거장치가 게시되어 있다. Korean Patent No. 1806078 discloses a metal pump of Snout, and Korean Patent No. 1842168 discloses a dross removal device for galvanizing lines.
게시된 스나우트 메탈펌프는 스나우트의 하부에 배출관이 구비된 하우징; 상기 하우징의 개방된 상단에 모터가 장치되어 하우징 내부를 밀폐하도록 결합되며, 하우징 내부의 모터의 구동축에 스크류회전축이 연결되고, 스크류회전축의 끝단에 스크류가 장치되어 배출관 내에 배치되는 스크류뭉치를 구비한다.The posted snout metal pump includes: a housing provided with a discharge pipe at the lower part of the snout; A motor is installed at the open upper end of the housing and coupled to seal the inside of the housing, a screw rotating shaft is connected to a drive shaft of the motor inside the housing, and a screw is installed at the end of the screw rotating shaft to provide a screw bundle disposed in the discharge pipe .
상술한 바와 같이 구성된 종래의 메탈펌프는 하우징이 탕면의 상부측으로 노출되어 있으므로 외기가 유입되는 문제점이 있으며, 유입된 외기는 용탕내부의 산화 및 기포가 스나우트의 내부로 들어가 강판의 산화 및 애쉬 발생을 증가시키게 된다. The conventional metal pump configured as described above has a problem in that the outside air flows in because the housing is exposed to the upper side of the molten metal. will increase
본원 발명인은 이러한 점을 감안하여 스나우트 내부의 탕면 이물질 제거장치를 출원하여 대한민국 등록특허 제 0831061호로 등록 받았다. In consideration of this point, the inventor of the present application applied for a device for removing foreign substances from the inside of the snout and was registered as Korean Patent Registration No. 0831061.
그리고 대한민국 등록특허 제10-1353197호에는 강판도금라인의 스나우트 장치가 게시되어 있다. 게시된 스나우트 장치는 가열로와 도금액이 충진된 도금조 사이에 연계되고 내부에 도금강판이 통과하는 스나우트 본체, 상기 스나우트 본체의 도금조 쪽 단부에 도금강판을 기준으로 양쪽에 스나우트 본체와 독립적으로 설치된 제1댐장치 및 제2 댐장치 및 스나우트 본체 외측의 상기 제1 댐장치 및 제2 댐장치와 인접한 위치에 이동 가능하게 설치된 메탈펌프를 포함한 구성을 가진다. And Korean Patent Registration No. 10-1353197 discloses a snout device for a steel plate plating line. The posted snout device is a snout body connected between a heating furnace and a plating bath filled with a plating solution and a plated steel sheet passing therein, and a snout body on both sides with respect to the plated steel sheet at the end of the plating bath side of the snout body. and a first dam device and a second dam device installed independently of each other, and a metal pump movably installed in a position adjacent to the first dam device and the second dam device on the outside of the snout body.
이러한 메탈펌프는 일부가 탕면으로 노출되어 있으므로 상술한 바와 같은 종래의 문제점을 근본적으로 해결할 수 없다. Since a part of such a metal pump is exposed to the hot water surface, the conventional problems as described above cannot be fundamentally solved.
특히, 도금액이 제 1,2댐장치를 월류해 메탈펌프에 의해 펌핑될 때 펌프실 내부에 지속적으로 흡입력(진공)이 발생되어 도금액의 수위가 낮아지면, 펌프실과 댐장치를 연결하는 연결부가 개방된다. 이어서 펌프실의 흡인력에 의해 탕면에 노출된 임펠러축수부의 틈새를 통하여 외기가 펌프실을 경유하여 스나우트 내부로 역류하여 강판을 산화시키거나 다량의 애쉬가 스나우트 내부로 유입하여 강판표면에 치명적인 결함을 유발하는 원인이 된다.In particular, when the plating solution overflows the first and second dam devices and is pumped by the metal pump, suction force (vacuum) is continuously generated inside the pump room and the water level of the plating solution is lowered, the connection part connecting the pump room and the dam device is opened. . Then, the outside air flows back into the snout through the pump room through the gap of the impeller shaft exposed to the hot water surface by the suction force of the pump room to oxidize the steel sheet or a large amount of ash flows into the snout, causing fatal defects on the steel sheet surface. cause to
또한 유입된 일부의 외기가 도금액과 함께 용융아연도금조 내로 펌핑되어 용탕의 산화 및 미세 기포에 포함된 이물질에 의한 오염을 일으키는 문제점이 있다. In addition, there is a problem that some of the introduced outside air is pumped into the hot-dip galvanizing bath together with the plating solution, causing oxidation of the molten metal and contamination by foreign substances contained in microbubbles.
본 발명은 상기와 같은 종래의 문제를 해결하기 위한 것으로서, 강판 용융아연도금 공정 시 스나우트(snout) 내의 탕면에 부상된 이물질이 스나우트 내에서 강판으로 이동되어 부착되는 것을 방지할 수 있는 강판 용융아연도금 공정에서의 스나우트의 내부 이물제거장치를 제공함에 그 목적이 있다. The present invention is to solve the conventional problems as described above, and during the steel sheet hot-dip galvanizing process, foreign substances floating on the molten metal surface in the snout are moved to the steel sheet in the snout and attached to the steel sheet melting. An object of the present invention is to provide a device for removing foreign substances inside the snout in the galvanizing process.
본 발명의 다른 목적은 용융아연배출유닛에 의해 외기가 스나우트 내부로 유입되어 발생시키는 강판의 산화 및 용탕의 산화를 방지하고, 용융아연도금액과 함께 유입되는 기포 주변의 이물질이 용융아연도금조를 오염시키는 것을 방지 할 수 있는 강판 용융아연도금 공정에서의 스나우트의 내부 이물제거장치을 제공함에 있다. Another object of the present invention is to prevent oxidation of the steel sheet and oxidation of the molten metal caused by the introduction of outside air into the snout by the hot-dip galvanizing unit, and foreign substances around the bubbles introduced together with the hot-dip galvanizing solution are removed from the hot-dip galvanizing tank. An object of the present invention is to provide a device for removing foreign substances inside the snout in the hot-dip galvanizing process for steel sheet, which can prevent contamination of the steel sheet.
상기와 같은 목적을 달성하기 위한 본 발명의 강판 용융아연도금 공정에서의 스나우트의 내부 이물제거장치는 단부가 용융아연도금조의 탕면에 잠기어 용융아연도금조로 유입되는 강판을 감싸 산화를 방지하기 위한 스노클부와, 상기 스노클부의 단부로부터 상기 강판과 소정간격 이격되도록 감싸며 용융아연도금조 내의 용융아연도금액이 스노클부의 내주면 측으로 넘치도록 하여 스노클부 내의 탕면으로 떨어진 이물질이 강판에 부착되지 못하도록 하는 댐형성부를 가진 댐유닛을 포함하는 스나우트와;In order to achieve the above object, the device for removing foreign matter inside the snout in the hot-dip galvanizing process of the present invention is to prevent oxidation by enclosing the steel sheet flowing into the hot-dip galvanizing bath with the end submerged in the hot-dip surface of the hot-dip galvanizing bath. The snorkel part and the snorkel part are wrapped so as to be spaced apart from the steel plate by a predetermined distance from the end of the snorkel part, and the hot-dip galvanizing solution in the hot-dip galvanizing tank overflows to the inner circumferential side of the snorkel part to prevent foreign substances falling on the molten water surface in the snorkel part from adhering to the steel plate. a snout including a dam unit having a portion;
상기 스노클부에 설치되는 것으로, 상기 댐유닛의 댐형성부를 넘친 용융아연도금액과 그 상부에 부유하여 있는 이물질을 스노클부 외부측의 용융아연도금조 내로 배출할 수 있도록 탕면보다 낮은 용융아연도금액의 내부에 위치되며, 댐형성부를 넘친 용융아연을 배출할 있도록 스노클부와 유입구에 의해 연결되고 구동축 또는 임펠러가 삽입되는 임펠러삽입구가 형성된 유도가이드부와;The hot-dip galvanizing solution installed in the snorkel part, which is lower than the hot-dip galvanizing solution, so that the hot-dip galvanizing solution overflowing the dam forming part of the dam unit and foreign substances floating thereon can be discharged into the hot-dip galvanizing tank outside the snorkel part. an induction guide part located inside the dam and connected by an inlet to the snorkel part so as to discharge the molten zinc overflowing the dam forming part and formed with an impeller insertion hole into which a drive shaft or an impeller is inserted;
상기 유도가이드부의 하부측에 설치되는 펌프하우징과; a pump housing installed on the lower side of the guide part;
상기 펌프하우징의 내부에 위치되며 모터에 의해 구동되는 구동축의 단부에 설치되는 임펠러와, 상기 유도가이드부에 형성된 임펠러삽입구를 차단하여 상기 임펠러삽입구를 통하여 용융아연도금액과 외기가 펌프하우징의 내부로 유입되는 것의 차단을 조절하는 외부유입조절부를 구비한 용융아연배출유닛;을 포함한다.An impeller located inside the pump housing and installed at the end of a drive shaft driven by a motor, and an impeller insertion hole formed in the induction guide part are blocked and the hot-dip galvanizing solution and outside air are introduced into the pump housing through the impeller insertion hole It includes a;
본 발명에 있어서, 상기 임펠러삽입구와 배출부의 직경이 상기 임펠러의 직경보다 크게 형성되고, 상기 외부유입조절부가 구동축에 고정설치 된다.In the present invention, the diameter of the impeller insertion port and the discharge part is formed to be larger than the diameter of the impeller, and the external inflow control part is fixedly installed on the drive shaft.
그리고, 상기 펌프하우징의 배출부에 설치되어 상기 펌프하우징의 배출부로부터 배출되는 용융아연도금액을 측면 또는 상면측으로 유도하는 용융아연유도배출부를 더 구비한다. And, it further includes a molten zinc induction discharge part installed in the discharge part of the pump housing to guide the hot-dip galvanizing solution discharged from the discharge part of the pump housing to a side surface or an upper surface side.
상기 유도가이드부와 스노클부를 연결하는 유입부의 위치가 상기 댐형성부의 상단부보다 낮은 측에 위치되며, 상기 유도가이드부는 댐유닛의 댐형성부의 상단부보다 낮은 측에 위치된다. A position of the inlet connecting the induction guide part and the snorkel part is located on a lower side than the upper end of the dam forming part, and the induction guide part is located on a lower side than the upper end of the dam forming part of the dam unit.
상기 목적을 달성하기 위한 본 발명의 강판 용융아연도금 공정에서의 스나우트의 내부 이물제거장치는 단부가 용융아연도금조의 탕면에 잠기어 용융아연도금조로 유입되는 강판을 감싸 산화를 방지하기 위한 스노클부와, 상기 스노클부의 단부로부터 상기 강판과 소정간격 이격되도록 감싸며 용융아연도금조 내의 용융아연도금액이 스노클부의 내주면 측으로 넘치도록 하여 스노클부 내의 탕면으로 떨어진 이물질이 강판에 부착되지 못하도록 하는 댐형성부를 가진 댐유닛을 포함하는 스나우트와;In order to achieve the above object, the device for removing foreign substances inside the snout in the hot-dip galvanizing process of the present invention is a snorkel part for preventing oxidation by enclosing the steel sheet flowing into the hot-dip galvanizing bath with the end submerged in the molten metal surface of the hot-dip galvanizing bath. and a dam forming part wrapped around the end of the snorkel part so as to be spaced apart from the steel plate by a predetermined distance and allowing the hot-dip galvanizing solution in the hot-dip galvanizing bath to overflow to the inner circumferential side of the snorkel part to prevent foreign substances falling on the hot water surface in the snorkel part from adhering to the steel plate. Snout including a dam unit;
상기 스노클부에 설치되는 것으로, 상기 댐유닛의 댐형성부를 넘친 용융아연도금액과 그 상부에 부유하여 있는 이물질을 스노클부 외부측의 용융아연도금조 내로 배출할 수 있도록 탕면보다 낮은 용융아연도금액의 내부에 위치되며, 댐형성부를 넘친 용융아연을 배출할 있도록 스노클부와 유입구에 의해 연결되고 구동축 또는 임펠러가 삽입되는 임펠러삽입구가 형성된 유도가이드부와;The hot-dip galvanizing solution installed in the snorkel part, which is lower than the hot-dip galvanizing solution, so that the hot-dip galvanizing solution overflowing the dam forming part of the dam unit and foreign substances floating thereon can be discharged into the hot-dip galvanizing tank outside the snorkel part. an induction guide part located inside the dam and connected by an inlet to the snorkel part so as to discharge the molten zinc overflowing the dam forming part and formed with an impeller insertion hole into which a drive shaft or an impeller is inserted;
상기 유도가이드부의 하부측에 설치되는 펌프하우징과, 상기 모터에 의해 회전되는 구동축의 단부에 설치되어 상기 펌프하우징의 내부에 설치되는 임펠러와, 상기 펌프하우징과 대응되는 유도가이드부에 설치되어 유도가이드부 내의 용융아연도금액을 탕면측으로 펌핑하는 상부펌핑부를 포함하는 용융아연배출유닛;을 구비한 것을 특징으로 하다. A pump housing installed on the lower side of the induction guide part, an impeller installed at an end of a drive shaft rotated by the motor and installed inside the pump housing, and an induction guide part installed in the induction guide part corresponding to the pump housing and a molten zinc discharging unit including an upper pumping part for pumping the molten galvanizing solution in the part toward the molten water surface.
본 발명에 있어서, 상기 용융아연배출유닛의 상부펌핑부는 상기 펌프하우징과 대응되는 유도가이드부의 상부측에 설치되는 상부펌프하우징과, 상기 구동축에 설치되어 상기 상부펌프하우징의 내부에 설치되어는 상부임펠러를 포함한다. In the present invention, the upper pumping part of the molten zinc discharge unit includes an upper pump housing installed on the upper side of the induction guide part corresponding to the pump housing, and an upper impeller installed on the drive shaft and installed inside the upper pump housing includes
그리고 상기 구동축에는 상부임펠러와 임펠러가 설치되고, 상기 상부임펠러와 임펠러에 의해 펌핑되는 용융아연도금액의 배출방향이 서로 다르게 설치됨이 바람직하다. In addition, it is preferable that an upper impeller and an impeller are installed on the drive shaft, and the discharge directions of the molten galvanizing solution pumped by the upper impeller and the impeller are installed differently from each other.
본 발명에 따른 강판 용융아연도금 공정에서의 스나우트의 내부 이물제거장치는 스노클부로 유입되는 용융아연도금액 및 이물질을 스노클부 용융아연도금조의 용탕으로 펌핑 시 임펠러 축수부를 통하여 외기가 스나우트 내부 및 도금조 내부로 유입되는 것을 방지할 수 있다.The device for removing foreign substances inside the snout in the hot-dip galvanizing process for steel sheet according to the present invention pumps the hot-dip galvanizing solution and foreign substances flowing into the snorkel part to the molten metal of the snorkel part hot-dip galvanizing bath. It can prevent inflow into the plating bath.
또한, 본 발명에 따른 강판 용융아연도금 공정에서의 탕면 이물질제거장치는유도가이드부의 상부에 형성된 임펠러삽입구를 통하여 임펠러의 결합 및 분리할 수 있으므로 용융아연배출유닛의 유지보수가 용이하다. 또한 구동축의 회전으로 구동축과 용탕의 접촉부위 소용돌이가 발생되는 것을 방지할 수 있으며, 용융아연도금액이 구동축을 따라 상승하는 것을 방지할 수 있다. In addition, the apparatus for removing foreign substances from the molten metal in the hot-dip galvanizing process of the steel sheet according to the present invention enables coupling and separation of the impeller through the impeller insertion hole formed on the upper part of the induction guide, so that the maintenance of the molten zinc discharging unit is easy. In addition, it is possible to prevent a vortex from occurring at the contact portion between the drive shaft and the molten metal due to the rotation of the drive shaft, and it is possible to prevent the hot-dip galvanizing solution from rising along the drive shaft.
도 1은 본 발명에 따른 강판 용융아연도금 공정에서의 스나우트의 내부 이물제거장치를 나타내 보인 측단면도, 1 is a side cross-sectional view showing an internal foreign material removal device of a snout in a steel sheet hot-dip galvanizing process according to the present invention;
도 2는 도 1에 도시된 강판 용융아연도금 공정에서의 탕면 이물질제거장치의 단면도,2 is a cross-sectional view of the molten metal foreign material removal device in the hot-dip galvanizing process of the steel sheet shown in FIG. 1;
도 3 내지 7은 용융아연배출유닛의 배출부를 통하여 배출되는 배출방향을 가변시키기 위한 용융아연유도배출부들을 발췌하여 도시한 단면도,3 to 7 are cross-sectional views showing molten zinc induced discharge units for changing the discharge direction discharged through the discharge unit of the molten zinc discharge unit;
도 8 은 도 1 및 도 2에 도시된 용융아연배출유닛을 발췌하여 도시한 단면도,8 is a cross-sectional view showing an extract of the molten zinc discharging unit shown in FIGS. 1 and 2;
도 9 및 도 10은 본 발명에 따른 용융아연배출유닛의 다른 실시예들을 도시한 단면도,9 and 10 are cross-sectional views showing other embodiments of the molten zinc discharging unit according to the present invention;
도 11 내지 도 14는 스코클부와 유도가이드부를 연결하는 결합부들의 실시예를 나타내보인 단면도, 11 to 14 are cross-sectional views showing an embodiment of coupling parts connecting the snorkel part and the induction guide part;
도 15 내지 도 17은 용융아연배출유닛의 외부유입조절부가 구동축에 설치된 상태를 나타내 보인 단면도,15 to 17 are cross-sectional views showing a state in which the external inflow control unit of the molten zinc discharge unit is installed on the drive shaft;
도 18 본 발명의 소용돌이방지부재의 다른 실시예를 나타내 보인 단면도,18 is a cross-sectional view showing another embodiment of the anti-vortex member of the present invention;
도 19는 본 발명에 따른 강판 용융아연도금 공정에서의 스나우트의 내부 이물제거장치의 다른 실시예를 나타내 보인 측단면도. 19 is a side cross-sectional view showing another embodiment of the apparatus for removing foreign matter inside the snout in the hot-dip galvanizing process for steel sheet according to the present invention;
도 20 내지 도 22은 본 발명에 따른 용융아연배출유닛의 또 다른 실시예들을 나타내 보인 단면도.20 to 22 are cross-sectional views showing still other embodiments of the molten zinc discharging unit according to the present invention.
본 발명에 따른 강판 용융아연도금 공정에서의 스나우트의 내부 이물제거장치의 실시예를 도 1 내지 도 2에 나타내 보였다. 1 to 2 show an example of an apparatus for removing foreign matter inside a snout in a steel sheet hot-dip galvanizing process according to the present invention.
도면을 참조하면, 본 발명에 따른 강판 용융아연도금 공정에서의 스나우트의 내부 이물제거장치(10)는 용융아연도금조(150)에 설치되어 고온으로 열처리된 강판(200)이 대기에 노출됨에 따른 표면 산화를 방지한다. 또한 용융아연도금액의 증기가 응축되어 형성된 애쉬(Ash)가 강판(200)의 표면에 이물질로서 부착되어 표면결함이 발생되는 것을 방지하기 위한 구조를 가진다.Referring to the drawings, the internal foreign material removal device 10 of the snout in the hot-dip galvanizing process according to the present invention is installed in the hot-dip galvanizing tank 150 and the steel sheet 200 heat-treated at a high temperature is exposed to the atmosphere. prevent surface oxidation. In addition, it has a structure for preventing the occurrence of surface defects as ash formed by condensing the vapor of the hot-dip galvanizing solution is attached as a foreign material to the surface of the steel sheet 200 .
이러한 강판 용융아연도금 공정에서의 스나우트의 내부 이물제거장치(10)는 단부가 용융아연도금조(150)의 탕면(1)에 잠기어 용융아연도금조(150)로 유입되는 강판(200)을 감싸서 산화를 방지하기 위한 스나우트(40)를 구비한다. In such a steel sheet hot-dip galvanizing process, the internal foreign material removal device 10 of the snout has an end submerged in the hot water surface 1 of the hot-dip galvanizing bath 150 and the steel sheet 200 is introduced into the hot-dip galvanizing bath 150. A snout 40 is provided to prevent oxidation by enclosing it.
상기 스나우트(40)의 하부측에는 용융아연도금조(150)에 그 하단부가 잠기는 스노클부(20)가 구비된다. 상기 스노클부(20)는 이의 하단부로부터 스노클부(20)를 통과하는 강판(200)의 외주면과 인접되도록 내측 상방으로 연장되어 상기 스노클부(20) 내의 탕면으로 떨어진 이물질이 강판에 부착되지 못하도록 하는 댐유닛(30)을 포함한다. On the lower side of the snout 40 , a snorkel part 20 , the lower end of which is immersed in the hot-dip galvanizing tank 150 , is provided. The snorkel part 20 extends upwardly inside to be adjacent to the outer circumferential surface of the steel plate 200 passing through the snorkel part 20 from the lower end thereof to prevent foreign substances falling on the tang surface in the snorkel part 20 from adhering to the steel plate. It includes a dam unit (30).
그리고 상기 스노클부(20)에 설치되어 상기 댐유닛(30)의 댐형성부(32)을 넘친 용융아연도금액을 용융아연도금조(150) 내로 펌핑하여 상기 스노클부(20)의 내부에 부상된 이물질이 강판에 부착되는 것을 방지하는 용융아연배출유닛(50)을 구비한다. Then, the hot-dip galvanizing solution installed in the snorkel part 20 and overflowing the dam forming part 32 of the dam unit 30 is pumped into the hot-dip galvanizing tank 150 to float inside the snorkel part 20 . A molten zinc discharging unit 50 is provided to prevent foreign substances from adhering to the steel sheet.
상술한 바와 같이 구성된 본 발명에 따른 강판 용융아연도금 공정에서의 스나우트의 내부 이물제거장치(10)를 구성요소별로 보다 상세하게 설명하면 다음과 같다.The device for removing foreign matter inside the snout in the hot-dip galvanizing process according to the present invention configured as described above will be described in more detail for each component as follows.
상기 스나우트(40)를 이루는 스노클부(20)는 열처리로(미도시)와 상기 용융아연도금조(150)의 사이의 용융아연도금조(150) 측에 설치되어 열처리를 위하여 가열된 강판(200)이 공기와 접촉되어 산화되는 방지할 수 있도록 롤러들에 의해 가이드 되어 용융아연도금조(150)로 유입되는 강판(200)을 감싸는 구조를 가진다. The snorkel part 20 constituting the snout 40 is installed on the side of the hot-dip galvanizing tank 150 between the heat treatment furnace (not shown) and the hot-dip galvanizing tank 150 and heated for heat treatment ( 200) has a structure that surrounds the steel plate 200 introduced into the hot-dip galvanizing bath 150 guided by rollers to prevent oxidation in contact with air.
상기 스나우트(40)는 사각관의 각형의 형상으로 이루어진 단위부재들과 스노클부(20)가 결합되어 이루어질 수 있다. 그리고 상기 스나우트(40)는 단부의 스노클부(20)의 일부가 용융아연도금조(150)에 잠기거나 들릴 수 있도록 회동시키는 별도의 액튜에이터(미도시)가 더 구비될 수 있다.The snout 40 may be formed by combining unit members having a rectangular shape of a square tube and the snorkel unit 20 . In addition, the snout 40 may further include a separate actuator (not shown) that rotates a part of the snorkel part 20 at the end to be immersed in or lifted from the hot-dip galvanizing bath 150 .
상기 댐유닛(30)은 스노클부(20)와 일체로 형성되거나 별도로 제작되어 결합될 수 있다. 이 댐유닛(30)은 도 1 및 도 2에 도시된 바와 같이 스노클부(20)의 내부 즉, 스노클부(20)의 내부공간을 통하여 용융아연도금조(150)로 유입된 강판이 통과하는 강판유입구(31)를 형성하는 댐형성부(32)와, 상기 댐형성부(32)의 하단부와 스노클부(20)의 하단부를 연결하여 상기 강판유입구(31)를 통하여 넘친 용융아연의 저장공간(34)을 형성하는 챔버형성부(33)를 구비한다. The dam unit 30 may be integrally formed with the snorkel unit 20 or may be separately manufactured and combined. As shown in FIGS. 1 and 2, the dam unit 30 passes through the inside of the snorkel unit 20, that is, the steel sheet introduced into the hot-dip galvanizing bath 150 through the inner space of the snorkel unit 20. A storage space of molten zinc overflowing through the steel plate inlet 31 by connecting the dam forming part 32 forming the steel plate inlet 31 and the lower end of the dam forming part 32 and the lower end of the snorkel part 20 A chamber forming part (33) forming a (34) is provided.
상기 댐유닛(30)의 댐형성부(32)의 상단부는 상기 스노클부(20)가 용융아연도금조(150)에 잠긴 상태에서 스노클부(20) 내의 탕면(1)과 그 높이가 일치되거나 상대적으로 낮은 위치에 위치된다. The upper end of the dam forming part 32 of the dam unit 30 has the same height as the hot water surface 1 in the snorkel part 20 while the snorkel part 20 is immersed in the hot-dip galvanizing tank 150, or located in a relatively low position.
따라서 용융아연도금조(150) 내의 용융된 용융아연도금액(2)이 강판(200)이 통과하는 강판유입구(31)를 통하여 유입되어 댐형성부(32)를 넘쳐 상기 챔버형성부(33)에 의해 형성된 저장공간(34)에 저장된다. Therefore, the molten hot-dip galvanizing solution 2 in the hot-dip galvanizing tank 150 flows in through the steel plate inlet 31 through which the steel plate 200 passes, overflows the dam forming part 32, and the chamber forming part 33 is stored in the storage space 34 formed by
상기 댐유닛(30)은 상술한 실시예에 의해 한정되지 않고, 상기 스노클부(20)의 내의 에쉬를 포함하는 부유물 또는 이물질이 상기 강판유입구(31)를 통과하는 강판(200)의 표면에 부착되지 않도록 강판유입구(31)를 통과하는 용융아연도금액이 도금되는 강판(200)의 표면으로부터 멀어지는 방향으로 유동될 수 있도록 하는 구조이면 가능하다. The dam unit 30 is not limited by the above-described embodiment, and floating matter or foreign substances including ash in the snorkel unit 20 are attached to the surface of the steel plate 200 through the steel plate inlet 31 . It is possible if the structure is such that the hot-dip galvanizing solution passing through the steel plate inlet 31 can flow away from the surface of the steel plate 200 to be plated.
예컨대, 상기 댐형성부는 스노클부의 내의 중앙부에 독립된 사각형의 형상으로 형성되거나 강판의 전면 및 배면과 대응되는 측에 평행하게 형성될 수 있다. 상기 댐형성부(32)의 상단부측에는 이물질이 강판유입구(31)를 통하여 유입되는 용융아연도금액(2)에 편승된 이물질이 상기 저장공간으로 원활하게 배출될 수 있도록 적어도 하나의 유도배출홈(32a)이 형성될 수 있다.(도 5참조) For example, the dam forming portion may be formed in an independent rectangular shape in the central portion of the snorkel portion or may be formed parallel to the front and rear surfaces of the steel plate. At the upper end side of the dam forming part 32, at least one guide discharge groove ( 32a) may be formed (see FIG. 5).
상기 용융아연배출유닛(50)은 상기 댐유닛(30)의 댐형성부(32)를 넘쳐 챔버형성부(33)에 의해 형성되는 저장공간(34)에 저장된 용융아연도금액(2)을 상기 용융아연도금조(150)로 배출하여 용융아연도금조(150) 내의 용융아연도금액(2)이 지속적으로 상기 강판유입구(31)를 통하여 유입될 수 있도록 한다. The molten zinc discharging unit 50 overflows the dam forming part 32 of the dam unit 30 and drains the molten zinc plating solution 2 stored in the storage space 34 formed by the chamber forming part 33 above. It is discharged to the hot-dip galvanizing bath 150 so that the hot-dip galvanizing solution 2 in the hot-dip galvanizing bath 150 can be continuously introduced through the steel plate inlet 31 .
이러한 용융아연배출유닛(50)은 상기 스노클부(20)에 설치되어 상기 댐유닛(30)의 댐형성부(32)를 넘쳐 저장공간(34)에 저장된 용융아연을 배출하기 위한 적어도 하나의 유입부(51)와 내부공간(56)을 가지며 탕면으로부터 소정깊이의 용탕내부에 위치되도록 설치되는 유도가이드부(55)를 구비한다. 상기 유도가이드부(55)는 상기 댐유닛(30)의 댐형성부(32) 상면의 높이보다 낮은 위치의 스노클부(20)에 설치된다. 이는 유도가이드부(55)의 임펠러삽입구(52)를 통하여 외기가 유입되는 것을 차단하기 위함이다. The molten zinc discharge unit 50 is installed in the snorkel unit 20 and overflows the dam forming unit 32 of the dam unit 30 to discharge the molten zinc stored in the storage space 34. At least one inflow It has a part 51 and an inner space 56 and a guide guide part 55 installed to be located inside the molten metal at a predetermined depth from the molten metal surface. The guide part 55 is installed in the snorkel part 20 at a position lower than the height of the upper surface of the dam forming part 32 of the dam unit 30 . This is to block the inflow of external air through the impeller insertion hole 52 of the induction guide part 55 .
상기 유도가이드부(55)의 상면에는 상술한 바와 같이 구동축(63) 또는 임펠러(64)가 삽입되는 임펠러삽입구(52)가 형성되고, 유도가이드부(55)의 하면에는 펌프하우징(61)이 설치된다. 상기 임펠러삽입구(52)는 상기 펌프하우징(61)과 동일한 직경을 가지거나 더 큰 직경을 가질 수 있고, 또한 상기 임펠러삽입구(52)는 구동축(63)에 설치된 임펠러(64)의 직경보다 보다 더 큰 직경을 가질 수 있는데, 이에 한정되지는 않는다. 또한 펌프하우징(61)의 배출부(61a)는 실질적으로 임펠러삽입구(52)의 직경과 동일한 원통형의 형상으로 형성될 수 있는데, 이에 한정되지는 않는다. 그리고 상기 펌프하우징(61)에 설치되는 임펠러(64)는 상기 유입부(51) 상단측의 높이보다 상대적으로 낮은 위치에 설치될 수 있도록 함이 바람직하다. An impeller insertion hole 52 into which the drive shaft 63 or the impeller 64 is inserted is formed on the upper surface of the induction guide part 55, and a pump housing 61 is formed on the lower surface of the induction guide part 55. is installed The impeller insert 52 may have the same diameter or a larger diameter as that of the pump housing 61 , and the impeller insert 52 may be larger than the diameter of the impeller 64 installed on the drive shaft 63 . It may have a large diameter, but is not limited thereto. In addition, the discharge part 61a of the pump housing 61 may be formed in a cylindrical shape substantially the same as the diameter of the impeller insertion hole 52, but is not limited thereto. And it is preferable that the impeller 64 installed in the pump housing 61 be installed at a position relatively lower than the height of the upper end of the inlet part 51 .
상기 펌프하우징(61)의 배출부(61a)에는 도 3 내지 도 6에 도시된 바와 같이 상기 펌프하우징(61)의 배출구(61a)로부터 배출되는 용융아연도금액(2)을 용융아연도금조(150)의 측면 또는 탕면측으로 유도하는 용융아연유도배출부(69)를 더 구비할 수 있다.As shown in FIGS. 3 to 6, the hot-dip galvanizing solution 2 discharged from the outlet 61a of the pump housing 61 is applied to the discharge part 61a of the pump housing 61 in 150) may further include a molten zinc induction discharge unit 69 for guiding to the side or the hot water surface side.
도 7에 도시된 바와 같이 펌프하우징(61)의 배출구(61a) 단부측 외주면에는 반원, 사각, 마름모 형태의 개방부(61c)가 형성되어 용융아연도금액(2)의 배출방향을 다양화 할 수 있으며, 배출저항을 줄일 수도 있다. As shown in FIG. 7, an opening 61c in the form of a semicircle, square, or rhombus is formed on the outer peripheral surface of the end side of the discharge port 61a of the pump housing 61 to diversify the discharge direction of the hot-dip galvanizing solution 2 and can reduce the discharge resistance.
그리고 펌프하우징(61)에는 상기 임펠러삽입구를 통하여 펌프하우징(61)의 내부에 위치되며 스나우트의 측면에 설치되는 모터(62)에 의해 구동되는 구동축(63)에 설치된 임펠러(64)가 설치된다. 상기 유도가이드부(55)에는 상기 임펠러삽입구(52)를 차단하여 상기 임펠러삽입구(52)를 통하여 외기와 스나우트 외부측의 용융아연도금액(2)이 유도가이드부(55)의 내부공간(56)과 펌프하우징(61)의 내부로 유입되는 것을 차단하는 외부유입조절부(66)이 설치된다. 상기 외부유입조절부(66)은 판상의 부재로 이루어질 수 있으며, 상기 유도가이드부(55)의 상판으로 이루어질 수도 있다. And the pump housing 61 is located inside the pump housing 61 through the impeller insertion hole and the impeller 64 installed on the drive shaft 63 driven by the motor 62 installed on the side of the snout is installed. . In the induction guide part 55, the impeller insertion hole 52 is blocked, and the outside air and the molten galvanizing solution 2 on the outside of the snout are placed through the impeller insertion hole 52 into the inner space of the induction guide part 55 ( 56) and an external inflow control unit 66 for blocking the inflow into the inside of the pump housing 61 are installed. The external inflow control unit 66 may be formed of a plate-shaped member, or may be formed of an upper plate of the induction guide unit 55 .
상기 구동축을 회전시키기 위한 모터(62)는 스노클부(20) 또는 상기 외부유입조절부(66) 또는 유도가이드부(55)의 상면에 설치된 서포트부재(62a)들에 설치될 수 있다. The motor 62 for rotating the drive shaft may be installed on the snorkel unit 20 or the support members 62a installed on the upper surface of the external inflow control unit 66 or the induction guide unit 55 .
한편, 상술한 바와 같이 구성된 용융아연배출유닛(50)에 있어서, 상기 용융아연도금조(150)의 용탕내부에 설치되는 유도가이드부(55)의 내부공간(56)은 임펠러삽입구(52)를 통하여 유입된 외기가 스나우트(40) 내부로 유입되는 것을 방지하는 것과, 상기 댐유닛(30)의 저장공간(34)을 연결하는 유입부(51)를 통하여 유입되는 용융아연도금액(2)에 포함된 기포가 상부측으로 유동되도록 하여 포집 될 수 있도록 함이 바람직하다. 특히, 상기 유입부(51)를 통하여 배출되는 용융아연도금의 배출속도가 빨라 상기 저장공간(34)의 용융아연도금액(2)의 수위가 낮아지는 짐으로써 유입부(51)로 유입되는 기포가 유도가이드부(55)의 내부공간 상부로 유동되어 포짐될 수 있도록 함이 바람직한데, 이를 위하여 상기 유입부(51)는 상기 유도가이드부(55) 내의 하부측에 위치될 수 있도록 함이 바람직하다. On the other hand, in the molten zinc discharging unit 50 configured as described above, the inner space 56 of the induction guide part 55 installed inside the molten metal of the hot-dip galvanizing bath 150 is the impeller insertion port 52 . The hot-dip galvanizing solution (2) that is introduced through the inlet part (51) connecting the storage space (34) of the dam unit (30) is prevented from being introduced into the snout (40). It is preferable to allow the bubbles contained in the to flow to the upper side so that they can be collected. In particular, since the discharge rate of the hot-dip galvanizing solution discharged through the inlet part 51 is high, the water level of the hot-dip galvanizing solution 2 in the storage space 34 is lowered, so that the bubbles flowing into the inlet part 51 are lowered. It is preferable to flow into the upper portion of the inner space of the induction guide part 55 and to be nested. Do.
그리고 상기 유도가이드부(55)의 상면측에는 상기 유도가이드부(55)의 내부공간에 포집된 공기를 용융아연도금의 내부 또는 탕면의 밖으로 배출하기 위한 관상의 기체배출유닛(57)을 더 구비한다. And on the upper surface side of the guide part 55, a tubular gas exhaust unit 57 for discharging the air collected in the inner space of the guide part 55 to the inside of the hot-dip galvanizing or the outside of the hot water surface is further provided. .
상기 기체배출유닛(57)은 도 8에 도시된 바와 같이 상기 유도가이드부(55)의 상면측에는 상기 유도가이드부(55)의 내부공간에 포집된 공기를 용융아연도금의 내부 또는 탕면의 밖으로 배출하기 위한 기체배출관(57a)으로 이루어질 수 있다. As shown in FIG. 8, the gas exhaust unit 57 discharges the air collected in the inner space of the induction guide part 55 to the inside of the hot-dip galvanizing or to the outside of the hot water surface on the upper surface side of the induction guide part 55, as shown in FIG. It may be made of a gas discharge pipe (57a) for
상기 유입부(51)는 도 9 도 10에 도시된 바와 같이 댐유닛(30)의 챔버형성부(33)의 하면과 유도가이드부(55)의 측면 또는 하면을 연결하는 다른 형태의 유도배출관(58)으로 이루어질 수도 있다. 상기 유도가이드부(55)와 댐유닛(30)의 저장공간(34)를 연결하는 유입부(51)는 챔버형성부(33)와 유도가이드부(55)의 하면을 연결하는 구조로 이루어질 수 있다. The inlet part 51 is another type of induction discharge pipe connecting the lower surface of the chamber forming part 33 of the dam unit 30 and the side or lower surface of the induction guide part 55 as shown in FIGS. 9 and 10 ( 58) may also be used. The inlet part 51 connecting the induction guide part 55 and the storage space 34 of the dam unit 30 may have a structure that connects the chamber forming part 33 and the lower surface of the induction guide part 55 . there is.
한편, 상기 스노클부(20)의 저장공간(34)과 유도가이드부(55)의 내부공간을 연결하는 유도배출관(58)에는 상기 유도가이드부(55)를 원활하게 결합 및 분리할 수 있는 결합부(100)가 더 구비된다. On the other hand, to the guide discharge pipe 58 connecting the storage space 34 of the snorkel part 20 and the inner space of the guide guide part 55, the guide guide part 55 can be smoothly coupled and separated from the coupling. A unit 100 is further provided.
상기 결합부(100)는 도 11에 도시된 바와 같이 유도배출관(58)가 분할되고, 분할된 단부에 결합을 위한 플랜지(101)(102)들이 각각 설치되고, 이들의 사이에 신축성 가스캣(103)이 설치된 상태에서 볼트에 의해 결합된 구조로 이루어질 수 있으며, 도 12 및 도 13에 도시된 바와 같이 유도배출관(58)에 신축관(110) 또는 상대적으로 얇은 금속관(111)이 플랜지에 의해 연결된 구조로 이루어질 수 있다. As shown in FIG. 11, in the coupling part 100, the guide discharge pipe 58 is divided, and flanges 101 and 102 for coupling are installed at the divided ends, respectively, and an elastic gasket ( 103) may be of a structure coupled by bolts in the installed state, and as shown in FIGS. 12 and 13 , the expansion pipe 110 or a relatively thin metal pipe 111 is connected to the induction discharge pipe 58 by a flange. It may have a connected structure.
또한 상기 유도배출관(58)에 설치된 결합부(100)는 유도배출관(58)이 분할되고, 분할된 일측의 유도배출관에 고정관(121)이 설치되고, 분할된 유도배출관의 타측 즉, 유도가이드부(55) 측에 설치된 유도배출관에 상기 고정관(121)를 따라 슬리이동가능하게 결합되는 이송관(122)이 설치된 구조로 이루어질 수 있다. In addition, as for the coupling part 100 installed in the guide discharge pipe 58, the guide discharge pipe 58 is divided, and the fixed pipe 121 is installed on the divided guide discharge pipe on one side, and the other side of the divided guide discharge pipe, that is, the guide guide part. (55) It may be made of a structure in which a transfer pipe 122 that is movably coupled along the fixed pipe 121 to the guide discharge pipe installed on the side is installed.
상기와 같이 유도부(51)에 결합부(100)의 설치는 스노클부(20)와 용융아연배출유닛(50)의 유도가이드부(55)의 결합 및 분리를 용이하게 한다. The installation of the coupling part 100 to the induction part 51 as described above facilitates the coupling and separation of the snorkel part 20 and the induction guide part 55 of the molten zinc discharging unit 50 .
상기 유도가이드부(55)에 설치되는 외부유입조절부(66)는 펌프하우징(61)의 임펠러삽입구(52)를 차단할 수 있도록 중앙부에 상기 구동축(63)이 삽입되는 관통공(66a)이 형성되고 임펠러삽입구(52)를 차단할 수 있도록 임펠러삽입구(52)의 직경보다 큰 직경을 가진다.The external inflow control part 66 installed in the induction guide part 55 has a through hole 66a into which the driving shaft 63 is inserted in the central part so as to block the impeller insertion hole 52 of the pump housing 61 is formed. and has a larger diameter than the diameter of the impeller insert (52) so as to block the impeller insert (52).
상기 외부유입조절부(66)는 도 15 내지 도 17에 도시된 바와 같이 구동축(63)에 설치되어 구동축(63)과 같이 회전될 수도 있다. 이 경우 상기 유도가이드부(55)의 임펠러삽입구(52)로 용융아연도금조(150) 내의 용융아연도금액(2)이 임펠러삽입구(52)를 통하여 유입되는 것을 방지할 수 있도록 도 16에 도시된 바와 같이 임펠러삽입구(52)의 가장자리와 외부유입조절부(66)의 가장자리는 소정폭의 스커트부(66b)가 형성될 수 있다. The external inflow control unit 66 may be installed on the driving shaft 63 and rotated together with the driving shaft 63 as shown in FIGS. 15 to 17 . In this case, it is shown in FIG. 16 to prevent the hot-dip galvanizing solution 2 in the hot-dip galvanizing bath 150 from flowing into the impeller insertion hole 52 of the induction guide part 55 through the impeller insertion hole 52. As described above, the edge of the impeller insertion hole 52 and the edge of the external inflow control portion 66 may be formed with a skirt portion 66b of a predetermined width.
한편, 상기 외부유입조절부(66)의 상부측 구동축(63)에는 구동축(63)과 임펠러(64)의 회전에 의해 용융아연도금액(2)이 펌핑되면서 소용돌이가 발생되는 것을 방지하며 소용돌이의 발생 시 외기가 유도가이드부(55)의 내부공간(56)으로의 기포 유입과 구동축(63)의 산화 및 침식을 방지하는 소용돌이방지부재(70)가 더 구비된다. 상기 소용돌이방지부재(70)는 구동축(63)에 끼워지는 튜브형, 디스크형, 절두원추형 등으로 이루어질 수 있는데, 이에 한정되지 않고 소용돌이의 발생을 방지할 수 있는 구조를 가진다. 예컨대 도 18에 도시된 바와 같이 모터(62)에 지지된 원통형의 커버(75)가 구동축(63)을 감싸며 그 단부가 탕면에 잠기는 구조 혹은 탕면에서 약간 이격되어 구성될 수 있다. 그리고 도면에는 표시하지 않았지만 커버(75) 내부에 질소와 같은 불활성 가스를 공급할 수도 있다. 그리고 상기 소용돌이방지부재(70) 및 커버(75)는 용융된 아연이 부착되지 않은 카본, 세라믹 등의 재질로 이루어질 수 있다. On the other hand, the molten galvanizing solution 2 is pumped to the upper driving shaft 63 of the external inflow control unit 66 by the rotation of the driving shaft 63 and the impeller 64 to prevent the vortex from being generated and A vortex prevention member 70 is further provided to prevent the inflow of air bubbles into the inner space 56 of the induction guide portion 55 and oxidation and erosion of the drive shaft 63 when generated. The vortex prevention member 70 may be formed of a tube type, a disk type, a truncated cone type, etc. fitted to the drive shaft 63, but is not limited thereto and has a structure capable of preventing the occurrence of a vortex. For example, as shown in FIG. 18 , a cylindrical cover 75 supported by the motor 62 surrounds the drive shaft 63 and the end thereof is submerged in the hot water surface or may be configured to be slightly spaced apart from the hot water surface. In addition, although not shown in the drawing, an inert gas such as nitrogen may be supplied to the inside of the cover 75 . In addition, the swirl prevention member 70 and the cover 75 may be made of a material such as carbon or ceramic to which molten zinc is not attached.
상기 용융아연배출유닛(50)의 다른 실시예로서 도 19에 나타내 보였다. 상기 실시예와 동일한 도면부호는 동일한 구성요소를 가리킨다.Another embodiment of the molten zinc discharging unit 50 is shown in FIG. 19 . The same reference numerals as in the above embodiment designate the same components.
상기 유도가이드부(55)는 댐유닛(30)의 댐형성부(32)를 넘친 용융아연도금액(2)을 스노클부(20) 외부측의 용융아연도금조(150) 내로 펌핑하여 댐형성부(32)를 넘친 용융아연도금액에 포함된 이물질이 상기 용융아연도금조(150)의 내부로 펌핑할 수 있도록 탕면보다 낮은 용탕의 내부에 위치되며 댐유닛(30)의 저장공간(34)과 유입부(51)에 의해 연결된다. The induction guide part 55 pumps the hot-dip galvanizing solution 2 overflowing the dam forming part 32 of the dam unit 30 into the hot-dip galvanizing tank 150 outside the snorkel part 20 to form a dam. It is located inside the molten metal lower than the molten metal surface so that foreign substances contained in the hot-dip galvanizing solution overflowing the part 32 can be pumped into the hot-dip galvanizing bath 150, and the storage space 34 of the dam unit 30 and the inlet 51 are connected.
상기 유도가이드부(55)의 하면에는 지지공(91)이 형성된다. 그리고 상기 유도가이드부(55)에는 외부유입조절부(66)과 하우징(61)이 모터(62)와 구동축(63)과 임펠러(64)가 일체형으로 구성된 펌프(90)이 설치된다. A support hole 91 is formed on a lower surface of the guide part 55 . And the induction guide part 55, the external inflow control part 66 and the housing 61, the motor 62, the drive shaft 63, and the impeller 64 are integrally configured with the pump 90 is installed.
상기 펌프(90)의 펌프하우징(92)은 원통형의 형상을 가지며 그 상부에 플랜지부(93)가 형성되어 상기 지지공(91)의 가장자리에 지지된다. 상기 펌프하우징(92)의 플랜지부(93)에는 서포트부재(94)가 설치된다. 상기 서포트부재(94)는 유도가이드부(55)의 상면에 형성된 임펠러삽입구(52)를 통하여 탕면의 상부로 연장되어 모터(62)를 지지한다. 그리고 상기 서포트부재(94)에는 상기 외부유입조절부(66)이 지지된다. 상기 모터(62)에 의해 회전되는 구동축(63)의 단부에는 펌프하우징(92)의 내부에 설치되는 임펠러(64)가 설치된다. The pump housing 92 of the pump 90 has a cylindrical shape, and a flange part 93 is formed thereon to be supported on the edge of the support hole 91 . A support member 94 is installed on the flange portion 93 of the pump housing 92 . The support member 94 extends to the upper portion of the hot water surface through the impeller insertion hole 52 formed on the upper surface of the guide part 55 to support the motor 62 . And the external inflow control part 66 is supported on the support member 94 . An impeller 64 installed inside the pump housing 92 is installed at an end of the drive shaft 63 rotated by the motor 62 .
한편, 상기 실시예들에 있어서, 상기 유도가이드부(55)를 연결하는 유입부(51)는 댐형성부(32)의 상단부 보다 낮은 위치에 위치된다. 또한 상기 구동축(63)과 모터(62)의 회전축은 커플러(97)에 의해 연결되는데, 상기 커플러(97)에는 구동축(63)으로부터의 열이 상기 모터(62)의 회전축으로 전달되는 것을 방지하기 위한 단열재(98)가 설치될 수 있다.On the other hand, in the above embodiments, the inlet portion 51 connecting the guide portion 55 is located at a lower position than the upper end of the dam forming portion (32). In addition, the drive shaft 63 and the rotation shaft of the motor 62 are connected by a coupler 97, in the coupler 97 to prevent heat from the drive shaft 63 from being transmitted to the rotation shaft of the motor 62. Insulation material 98 for the may be installed.
도 20 내지 22에는 본 발명에 따른 용융아연배출유닛의 또 다른 실시예를 나타내 보였다. 본 실시예에 있어서, 상기 실시예와 동일한 도면부호는 동일한 구성요소를 가리킨다. 20 to 22 show another embodiment of the molten zinc discharge unit according to the present invention. In this embodiment, the same reference numerals as in the above embodiment indicate the same components.
본 발명에 따른 유도가이드부(55)는 댐유닛(30)의 댐형성부(32)를 넘친 용융아연도금액(2)을 스노클부(20) 외부측의 용융아연도금조(150) 내로 펌핑하여 댐형성부(32)를 넘친 용융아연도금액에 포함된 이물질이 상기 용융아연도금조(150)의 내부로 펌핑할 수 있도록 탕면보다 낮은 용탕의 내부에 위치되며 댐유닛(30)의 저장공간(34)과 유입부(51)에 의해 연결된다.The induction guide part 55 according to the present invention pumps the hot-dip galvanizing solution 2 overflowing the dam forming part 32 of the dam unit 30 into the hot-dip galvanizing tank 150 outside the snorkel part 20 . It is located inside the molten metal lower than the molten metal surface so that foreign substances contained in the hot-dip galvanizing solution overflowing the dam forming part 32 can be pumped into the hot-dip galvanizing tank 150 , and the storage space of the dam unit 30 . (34) and connected by an inlet (51).
상기 유도가이드부(55)의 하면에는 펌프하우징(61)이 형성되고, 상기 펌프(62)에 의해 회전되는 구동축(63)의 단부에는 상기 펌프하우징(61)에 위치되어 유입부(51)를 통하여 유도가이드부(55)의 내부로 유입되는 용융아연도금액(2)을 배출부(61)을 통하여 배출하기 위한 임펠러(64)가 설치된다.A pump housing 61 is formed on the lower surface of the induction guide part 55 , and is located in the pump housing 61 at the end of the drive shaft 63 rotated by the pump 62 to provide an inlet part 51 . An impeller 64 for discharging the hot-dip galvanizing solution 2 flowing into the induction guide unit 55 through the discharge unit 61 is installed.
그리고 펌프하우징(61)와 대응되는 상기 임펠러삽입구(52)에는 유도가이드부(55)를 통하여 유입되는 용융유아연도금액(2)을 상부로 배출하기 위한 상부펌핑부(80)가 구비된다. 상기 상부펌핑부(80)는 상기 펌프하우징(61)과 대응되는 유도가이드부(55)의 상면에 상부펌프하우징(81)이 설치된다. 상기 상부펌프하우징(81)은 원통형의 형상으로 이루어지며 상단측에는 반경방향으로 지지플렌지부(82)가 형성된다. 상기 펌프하우징(61)의 직경과 상부펌프하우징(81)의 직경은 상호 동일한 직경으로 형성함이 바람직하다. And the impeller insertion port 52 corresponding to the pump housing 61 is provided with an upper pumping part 80 for discharging the molten infant infant plating solution 2 flowing in through the induction guide part 55 to the upper part. The upper pumping part 80 has an upper pump housing 81 installed on the upper surface of the induction guide part 55 corresponding to the pump housing 61 . The upper pump housing 81 has a cylindrical shape, and a support flange 82 is formed on the upper end in a radial direction. The diameter of the pump housing 61 and the diameter of the upper pump housing 81 are preferably formed to have the same diameter.
그리고 상기 상부펌프하우징(81)에는 상기 구동축(63)에 의해 회전되는 상부임펠러(83)가 설치되어 상기 유도가이드부(55) 내의 용융아연도금액(2)를 용융아연도금조(150) 내의 탕면측으로 펌핑하게 된다. In addition, an upper impeller 83 rotated by the drive shaft 63 is installed in the upper pump housing 81 to apply the hot-dip galvanizing solution 2 in the induction guide part 55 into the hot-dip galvanizing bath 150 . It will be pumped to the side of the bath.
한편, 도 21에 도시된 바와 같이 상부펌프하우징(81) 및 상부임펠러(83)의 직경을 상기 임펠러(64)의 직경보다 작게하여 펌프하우징(61)의 배출구(61a)를 통하여 주로 배출될 수 있도록 할 수 있다. On the other hand, as shown in FIG. 21, the diameter of the upper pump housing 81 and the upper impeller 83 is made smaller than the diameter of the impeller 64, so that it can be mainly discharged through the outlet 61a of the pump housing 61. can make it
또한 도 22에 도시된 바와 같이 상기 상부펌프하우징(81)의 직경과 상부임펠러(83)의 직경을 유도가이드부(55)의 하부측에 위치되는 펌프하우징(61)과 임펠러(64)의 직경보다 크게 하여 상부펌핑부(80)를 통하여 유도가이드부(55) 내의 용융아연도금액(2)을 주로 배출할 수 있도록 할 수 있다. In addition, as shown in FIG. 22 , the diameter of the upper pump housing 81 and the diameter of the upper impeller 83 are the diameters of the pump housing 61 and the impeller 64 positioned on the lower side of the induction guide part 55 . By making it larger, it is possible to mainly discharge the hot-dip galvanizing solution 2 in the induction guide part 55 through the upper pumping part 80 .
상술한 바와 같이 구성된 본 발명에 따른 강판 용융아연도금 공정에서의 스나우트의 내부 이물제거장치의 작용을 설명하면 다음과 같다. The operation of the internal foreign material removal device of the snout in the hot-dip galvanizing process according to the present invention configured as described above will be described below.
먼저, 도 1 및 2에 도시된 바와 같이 스노클부(20)의 단부가 탕면(1) 수위보다 낮은 위치에 위치하도록 스노클부(20)의 하부를 용융아연도금조(150)의 용탕 내에 일정 부분 침지시키면, 용융아연도금조(150) 내의 용융아연도금액(2)이 댐형성부(32)를 월류하여 챔버형성부(33)에 의해 구획된 저장공간(34)에 저장된다. 이때에 상기 스노클부(20)에 형성된 유도가이드부(55)와 임펠러(64)가 설치된 펌프하우징(61)은 용융아연도금조(150)의 탕면으로부터 소정의 깊이 인입된 용융아연도금액(2)에 잠기게 된다. First, as shown in FIGS. 1 and 2 , the lower part of the snorkel part 20 is placed in a position lower than the water level of the hot water surface 1 so that the end of the snorkel part 20 is a certain portion in the molten metal of the hot-dip galvanizing bath 150 . When immersed, the hot-dip galvanizing solution 2 in the hot-dip galvanizing tank 150 overflows the dam forming part 32 and is stored in the storage space 34 partitioned by the chamber forming part 33 . At this time, the pump housing 61 in which the induction guide part 55 and the impeller 64 formed in the snorkel part 20 are installed is the hot-dip galvanizing solution 2 drawn in from the hot water surface of the hot-dip galvanizing bath 150 to a predetermined depth. ) is immersed in
이 상태에서, 용융아연배출유닛(50)의 모터(62)가 작동되면, 임펠러(64)가 회전되면서 저장공간(34) 내의 용융아연도금액(2)이 유도가이드부(55)의 내부공간(56)으로 유입된 후, 펌프하우징(61)의 내부에 설치된 임펠러(64)에 펌프하우징(61)의 배출부(61a)를 통하여 상기 용융아연도금조(150) 내의 용융아연도금액(2)으로 배출된다. In this state, when the motor 62 of the molten zinc discharging unit 50 is operated, the impeller 64 is rotated and the molten galvanizing solution 2 in the storage space 34 is transferred to the inner space of the induction guide part 55 . After flowing into the pump housing 61, the hot-dip galvanizing solution 2 in the hot-dip galvanizing bath 150 through the discharge part 61a of the pump housing 61 to the impeller 64 installed inside the pump housing 61. ) is released as
이러한 과정에서 상기 댐유닛(30)의 강판유입구(31)를 통하여 유입된 후, 저장공간(34)로 흐르는 용융아연도금액(2)은 스나우트 내부의 애쉬를 포함한 기체와 상기 유입구(51)을 통하여 유도가이드부(55)의 내부공간(56)으로 유입될 수 있다. In this process, the hot-dip galvanizing solution 2 flowing into the storage space 34 after being introduced through the steel plate inlet 31 of the dam unit 30 is the gas containing the ash inside the snout and the inlet 51 . It may be introduced into the inner space 56 of the induction guide part 55 through the .
이와 같이 상기 유도가이드부(55)의 내부공간으로 유입된 용융아연도금액(2)에 포함된 기체(기포)는 분리되어 상부로 이동되고, 용융아연도금액(2)은 배출부(61a)를 통하여 배출된다. 따라서 임펠러에 의해 펌핑되는 용융아연도금액(2)에 스나우트의 내부의 기체가 편승되어 상기 용융아연도금조(150) 내의 용탕 즉, 용융아연도금액으로 유출되는 것을 방지할 수 있다. In this way, the gas (bubbles) contained in the hot-dip galvanizing solution 2 introduced into the inner space of the induction guide part 55 is separated and moved upward, and the hot-dip galvanizing solution 2 is discharged through the discharge part 61a. is emitted through Accordingly, it is possible to prevent the gas inside the snout from riding on the hot-dip galvanizing solution 2 pumped by the impeller and flowing into the molten metal in the hot-dip galvanizing tank 150 , that is, the hot-dip galvanizing solution.
그리고 외기의 유입은 근본적으로는 유도가이드부(55)가 탕면에 잠기게 구성되어 있고 소용돌이방지부재(70) 등이 구비되어 있어 방지되지만, 임펠러삽입구(52) 혹은 관통공(66a)을 통하여 유입될 수 있는 외부기체는 상기 유도가이드부(55)의 내부공간의 상부에 위치되는 관상의 기체배출부재(57)를 통하여 탕면측으로 배출된다. 따라서, 상기와 같이 펌핑되는 용융아연도금액(2)에 편승된 공기 즉, 기포에 의해 강판 혹은 용융아연도금액의 산화를 방지할 수 있으며, 이 기포가 상기 스노클부(20)로 유입되어 도금되는 강판(200)의 표면에 부착되어 결합을 유발시키는 것을 방지할 수 있다. And the inflow of outside air is basically prevented by the induction guide part 55 being submerged in the hot water surface and provided with the vortex prevention member 70, etc., but the inflow through the impeller insertion hole 52 or the through hole 66a The external gas that can be formed is discharged toward the hot water surface through the tubular gas discharge member 57 located above the inner space of the induction guide part 55 . Accordingly, oxidation of the steel sheet or the hot-dip galvanizing solution can be prevented by air, that is, bubbles riding on the pumped hot-dip galvanizing solution 2 as described above, and these bubbles are introduced into the snorkel unit 20 for plating. It can be prevented from being attached to the surface of the steel plate 200 to be combined and causing bonding.
특히 상기 탕면과 접촉되는 부위의 구동축(63)에는 도 18에 도시된 바와 같이 소용돌이방지부재(70)가 설치되어 있으므로 일부의 용융아연도금액(2)이 관통공(66a)을 통하여 유도가이드부(55)의 내부공간(56)으로 유입 되는 것을 차단함과 아울러 구동축(63)의 회전에 의한 소용돌이 발생을 방지할 수 있다. 또한 용융아연도금액(2)이 상기 구동축(63)를 따라 상승하는 것을 방지할 수 있다. In particular, as shown in FIG. 18 , a vortex prevention member 70 is installed on the drive shaft 63 at the portion in contact with the hot water surface, so that a part of the hot-dip galvanizing solution 2 passes through the through hole 66a to the guide part. In addition to blocking the inflow into the inner space (56) of the (55), it is possible to prevent the occurrence of a vortex due to the rotation of the drive shaft (63). In addition, it is possible to prevent the hot-dip galvanizing solution 2 from rising along the drive shaft 63 .
상기 용융아연배출유닛(50)을 수리하기 위해서는 펌프하우징(61)과 유도가이드부(55)를 스노클부(20)으로부터 분리하지 않고, 유도가이드부(55)와 외부유입조절부(66)을 분리하여 구동축과 같이 펌프하우징(61)에 삽입된 임펠러를 임펠러삽입구(52)를 통하여 분리 할 수 있다. 따라서 용융아연 배출유닛의 유지보수가 용이하다.In order to repair the molten zinc discharge unit 50, the pump housing 61 and the induction guide part 55 are not separated from the snorkel part 20, but the induction guide part 55 and the external inflow control part 66 are removed. It is possible to separate the impeller inserted into the pump housing 61 like the drive shaft by separating it through the impeller insertion hole 52 . Therefore, maintenance of the molten zinc discharge unit is easy.
한편, 도 20 내지 도 22에 도시된 바와 같이 유도가이드부(55)의 상면측에 상부펌핑부(80)가 형성되고, 하부측에 배출을 위한 임펠러하우징(61)와 모터의 구동축에 임펠러가 설치되어 있으므로 유입부(51)를 통하여 유도가이드부(55) 내로 유입된 용융아연도금액(2)은 유도가이드부(55)의 상하부측으로 배출된다. 따라서 유도가이드부(55) 내의 용융아연도금액(2)의 배출 특성을 향상시킬 수 있으며, 유도가이드부(55)의 상면측으로부터 내부공간(56)으로 외기의 유입을 원천적으로 방지할 수 있다.On the other hand, as shown in FIGS. 20 to 22, the upper pumping part 80 is formed on the upper surface side of the induction guide part 55, and the impeller housing 61 for discharge and the impeller on the driving shaft of the motor are formed on the lower side. Since it is installed, the hot-dip galvanizing solution 2 introduced into the induction guide portion 55 through the inlet portion 51 is discharged to the upper and lower sides of the induction guide portion 55 . Accordingly, it is possible to improve the discharge characteristics of the hot-dip galvanizing solution 2 in the induction guide part 55 and to fundamentally prevent the inflow of outside air from the upper surface side of the induction guide part 55 to the inner space 56 . .
상술 바와 같이 본 발명의 강판 용융아연도금 공정에서의 스나우트의 내부 이물제거장치는 용융아연도금배출유닛에 의해 댐유닛의 저장공간으로 유입되는 용융아연도금액의 펌핑 시, 기존의 임펠러 축수부측이 외기와 통하도록 구성되어 발생되는 외기의 스나우트 내부 유입에 의한 강판 결함 발생과, 용융아연도금액과 함께 외기 즉, 기포형태의 외기가 용융아연도금조(150) 내로 유입되어 도금액이 산화되는 것과 기포주변에 포함된 이물질이 도금되는 강판의 표면에 부착되어 결함을 유발하는 것을 방지할 수 있다. As described above, in the device for removing foreign substances inside the snout in the hot-dip galvanizing process of the present invention, when the hot-dip galvanizing solution flowing into the storage space of the dam unit by the hot-dip galvanizing discharge unit is pumped, the existing impeller shaft side The occurrence of defects in the steel sheet due to inflow of outside air into the snout, which is generated by being configured to communicate with the outside air, and outside air in the form of air bubbles flowing into the hot-dip galvanizing bath 150 together with the hot-dip galvanizing solution and oxidation of the plating solution It is possible to prevent foreign substances contained in the surrounding air bubbles from adhering to the surface of the plated steel sheet and causing defects.
이상에서 설명한 본 발명에 따른 강판 용융아연도금 공정에서의 스나우트의 내부 이물제거장치는 강판 용융아연도금 공정에서의 탕면 이물질제거장치는 첨부된 도면을 참조로 설명하였으나 이는 예시적인 것에 불과하며, 당해 기술분야에서 통상의 지식을 가진 자라면 이로부터 다양한 변형 및 균등한 타 실시 예가 가능하다는 점을 이해할 것이다. The device for removing foreign substances inside the snout in the hot-dip galvanizing process for steel sheet according to the present invention described above has been described with reference to the accompanying drawings, but the device for removing foreign substances from the molten metal surface in the hot-dip galvanizing process for steel sheet has been described with reference to the accompanying drawings. Those of ordinary skill in the art will understand that various modifications and equivalent other embodiments are possible therefrom.
따라서, 본 발명의 진정한 기술적 보호의 범위는 첨부된 청구범위의 기술적 사상에 의해서만 정해져야 할 것이다.Accordingly, the scope of true technical protection of the present invention should be determined only by the technical spirit of the appended claims.

Claims (11)

  1. 단부가 용융아연도금조의 탕면에 잠기어 용융아연도금조로 유입되는 강판을 감싸 산화를 방지하기 위한 스노클부와, 상기 스노클부의 단부로부터 상기 강판과 소정간격 이격되도록 감싸며 용융아연도금조 내의 용융아연도금액이 스노클부의 내주면 측으로 넘치도록 하여 스노클부 내의 탕면으로 떨어진 이물질이 강판에 부착되지 못하도록 하는 댐형성부를 가진 댐유닛을 포함하는 스나우트와;A snorkel part for preventing oxidation by enclosing the steel sheet flowing into the hot-dip galvanizing bath with an end submerged in the hot-dip galvanizing bath; a snout including a dam unit having a dam forming part that overflows to the inner peripheral surface of the snorkel part to prevent foreign substances falling on the tang surface in the snorkel part from adhering to the steel plate;
    상기 스노클부에 설치되는 것으로, 상기 댐유닛의 댐형성부를 넘친 용융아연도금액과 그 상부에 부유하여 있는 이물질을 스노클부 외부측의 용융아연도금조 내로 배출할 수 있도록 탕면보다 낮은 용융아연도금액의 내부에 위치되며, 댐형성부를 넘친 용융아연을 배출할 있도록 스노클부와 유입구에 의해 연결되고 구동축 또는 임펠러가 삽입되는 임펠러삽입구가 형성된 유도가이드부와;The hot-dip galvanizing solution installed in the snorkel part, which is lower than the hot-dip galvanizing solution, so that the hot-dip galvanizing solution overflowing the dam forming part of the dam unit and foreign substances floating thereon can be discharged into the hot-dip galvanizing tank outside the snorkel part. an induction guide part located inside the dam and connected by an inlet to the snorkel part so as to discharge the molten zinc overflowing the dam forming part and formed with an impeller insertion hole into which a drive shaft or an impeller is inserted;
    상기 유도가이드부의 하부측에 설치되는 펌프하우징과; a pump housing installed on the lower side of the induction guide part;
    상기 펌프하우징의 내부에 위치되며 모터에 의해 구동되는 구동축의 단부에 설치되는 임펠러와, 상기 유도가이드부에 형성된 임펠러삽입구를 차단하여 상기 임펠러삽입구를 통하여 용융아연도금액과 외기가 펌프하우징의 내부로 유입되는 것의 차단을 조절하는 외부유입조절부를 구비한 용융아연배출유닛;을 포함한 것을 특징으로 하는 강판 용융아연도금 공정에서의 스나우트의 내부 이물제거장치.An impeller located inside the pump housing and installed at the end of a drive shaft driven by a motor, and the impeller insertion hole formed in the induction guide part are blocked and the hot-dip galvanizing solution and outside air are introduced into the pump housing through the impeller insertion hole A device for removing foreign substances inside a snout in a steel sheet hot-dip galvanizing process, comprising a;
  2. 제 1항에 있어서, The method of claim 1,
    상기 외부유입조절부는 펌프하우징의 임펠러삽입구을 차단할 수 있도록 중앙부에 상기 구동축이 삽입되는 관통공이 형성된 것을 특징으로 한 강판 용융아연도금 공정에서의 스나우트의 내부 이물제거장치. The external inflow control unit has a through hole through which the drive shaft is inserted in the central portion so as to block the impeller insertion port of the pump housing.
  3. 제 1항 또는 제 2항에 있어서,3. The method according to claim 1 or 2,
    상기 임펠러삽입구와 배출부의 직경이 상기 임펠러의 직경보다 큰 것을 특징으로 하는 강판 용융아연도금 공정에서의 스나우트의 내부 이물제거장치.The internal foreign material removal device of the snout in the hot-dip galvanizing process, characterized in that the diameter of the impeller insertion port and the discharge part is larger than the diameter of the impeller.
  4. 제 1항에 있어서,The method of claim 1,
    상기 외부유입조절부가 구동축에 고정설치 된 것을 특징으로 하는 강판 용융아연도금 공정에서의 스나우트의 내부 이물제거장치. The internal foreign matter removal device of the snout in the hot-dip galvanizing process for steel sheet, characterized in that the external inflow control unit is fixedly installed on the drive shaft.
  5. 제 1항에 있어서,The method of claim 1,
    상기 펌프하우징의 배출부에 설치되어 상기 펌프하우징의 배출부로부터 배출되는 용융아연도금액을 측면 또는 상면측으로 유도하는 용융아연유도배출부를 더 구비한 것을 특징으로 하는 강판 용융아연도금 공정에서의 스나우트의 내부 이물제거장치. Snout in the hot-dip galvanizing process for steel sheet, characterized in that it further comprises a hot-dip galvanizing discharge part installed at the discharge part of the pump housing to guide the hot-dip galvanizing solution discharged from the discharge part of the pump housing to the side or top side. of internal foreign matter removal device.
  6. 제 1항에 있어서, The method of claim 1,
    상기 유도가이드부와 스노클부를 연결하는 유입부의 위치가 상기 댐형성부의 상단부보다 낮은 측에 위치되며, The position of the inlet connecting the guide part and the snorkel part is located on a lower side than the upper end of the dam forming part,
    상기 유도가이드부는 댐유닛의 댐형성부의 상단부보다 낮은 측에 위치된 것을 특징으로 하는 강판 용융아연도금 공정에서의 스나우트의 내부 이물제거장치. The device for removing foreign substances inside the snout in the hot-dip galvanizing process, characterized in that the guide part is located on a lower side than the upper end of the dam forming part of the dam unit.
  7. 제 1항에 있어서, The method of claim 1,
    상기 외부유입조절부에 모터를 지지하는 서포트부재가 설치된 것을 특징으로 하는 강판 용융아연도금 공정에서의 스나우트의 내부 이물제거장치.A device for removing foreign matter inside the snout in the hot-dip galvanizing process for steel sheet, characterized in that a support member for supporting the motor is installed in the external inflow control unit.
  8. 제 1항에 있어서, The method of claim 1,
    상기 임펠러는 유입부의 상부측보다 더 낮은 위치에 위치된 것을 특징으로 하는 강판 용융아연도금 공정에서의 스나우트의 내부 이물제거장치.The impeller is an internal foreign material removal device of the snout in the hot-dip galvanizing process for steel sheet, characterized in that it is located at a lower position than the upper side of the inlet.
  9. 단부가 용융아연도금조의 탕면에 잠기어 용융아연도금조로 유입되는 강판을 감싸 산화를 방지하기 위한 스노클부와, 상기 스노클부의 단부로부터 상기 강판과 소정간격 이격되도록 감싸며 용융아연도금조 내의 용융아연도금액이 스노클부의 내주면 측으로 넘치도록 하여 스노클부 내의 탕면으로 떨어진 이물질이 강판에 부착되지 못하도록 하는 댐형성부를 가진 댐유닛을 포함하는 스나우트와;A snorkel part for preventing oxidation by enclosing the steel sheet flowing into the hot-dip galvanizing bath with an end submerged in the hot-dip galvanizing bath; a snout including a dam unit having a dam forming part that overflows to the inner peripheral surface of the snorkel part to prevent foreign substances falling on the tang surface in the snorkel part from adhering to the steel plate;
    상기 스노클부에 설치되는 것으로, 상기 댐유닛의 댐형성부를 넘친 용융아연도금액과 그 상부에 부유하여 있는 이물질을 스노클부 외부측의 용융아연도금조 내로 배출할 수 있도록 탕면보다 낮은 용융아연도금액의 내부에 위치되며, 댐형성부를 넘친 용융아연을 배출할 있도록 스노클부와 유입구에 의해 연결되고 구동축 또는 임펠러가 삽입되는 임펠러삽입구가 형성된 유도가이드부와;The hot-dip galvanizing solution installed in the snorkel part, which is lower than the hot-dip galvanizing solution, so that the hot-dip galvanizing solution overflowing the dam forming part of the dam unit and foreign substances floating thereon can be discharged into the hot-dip galvanizing tank outside the snorkel part. an induction guide part located inside the dam and connected by an inlet to the snorkel part so as to discharge the molten zinc overflowing the dam forming part and formed with an impeller insertion hole into which a drive shaft or an impeller is inserted;
    상기 유도가이드부의 하부측에 설치되는 펌프하우징과, 상기 모터에 의해 회전되는 구동축의 단부에 설치되어 상기 펌프하우징의 내부에 설치되는 임펠러와, 상기 펌프하우징과 대응되는 유도가이드부에 설치되어 유도가이드부 내의 용융아연도금액을 탕면측으로 펌핑하는 상부펌핑부를 포함하는 용융아연배출유닛;을 구비한 것을 특징으로 하는 강판 용융아연도금 공정에서의 스나우트의 내부 이물제거장치.A pump housing installed on the lower side of the induction guide part, an impeller installed at the end of the drive shaft rotated by the motor and installed inside the pump housing, and an induction guide part installed in the induction guide part corresponding to the pump housing A device for removing foreign substances inside a snout in a steel sheet hot-dip galvanizing process, characterized in that it comprises a;
  10. 제 9항에 있어서,10. The method of claim 9,
    상기 용융아연배출유닛의 상부펌핑부는 상기 펌프하우징과 대응되는 유도가이드부의 상부측에 설치되는 상부펌프하우징과, 상기 구동축에 설치되어 상기 상부펌프하우징의 내부에 설치되어는 상부임펠러를 포함한 것을 특징으로 하는 강판 용융아연도금 공정에서의 스나우트의 내부 이물제거장치.The upper pumping part of the molten zinc discharge unit includes an upper pump housing installed on the upper side of the induction guide part corresponding to the pump housing, and an upper impeller installed on the drive shaft and installed inside the upper pump housing A device for removing foreign substances inside Snout in the hot-dip galvanizing process.
  11. 제 10항에 있어서,11. The method of claim 10,
    상기 구동축에 상부임펠러와 임펠러가 설치되고, 상기 상부임펠러와 임펠러에 의해 펌핑되는 용융아연도금액의 배출방향이 서로 다른 것을 특징으로 하는 강판 용융아연도금 공정에서의 스나우트의 내부 이물제거장치. An upper impeller and an impeller are installed on the drive shaft, and the discharge direction of the hot-dip galvanizing solution pumped by the upper impeller and the impeller is different from each other.
PCT/KR2021/013336 2020-10-30 2021-09-29 Apparatus for removing foreign substances from inside of snout in steel plate hot-dip galvanizing process WO2022092592A1 (en)

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KR1020210070989A KR102422187B1 (en) 2020-10-30 2021-06-01 Internal foreign matter removal apparatus of snout in hot dip galvanizing process

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KR20100076405A (en) * 2008-12-26 2010-07-06 주식회사 포스코 Apparatus and method for removing ash and dross in snout of continuous galvanizing line
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