KR20230094449A - Snorkel for galvanized sheet iron manufacture equipment - Google Patents

Abstract

The present invention relates to a snorkel for steel-making galvanizing equipment, which enables quick and easy maintenance work. The snorkel for steel-making galvanizing equipment of the present invention has a space formed inside to allow a strip to pass through, and is installed with the upper end coupled to a snout and the lower end immersed in a plating bath. The snorkel is composed of an upper body and a lower body, and the upper and lower bodies are detachably fixed to each other by a fixing means.

Description

Snorkel for steel galvanizing equipment {SNORKEL FOR GALVANIZED SHEET IRON MANUFACTURE EQUIPMENT}

The present invention relates to a snorkel for a steel galvanizing facility, and more particularly, to a snorkel for a steel galvanizing facility that can quickly and easily perform maintenance work.

In general, steel sheets produced in steel mills are wound into coils to have a predetermined width and thickness, and these coils can be subjected to a pretreatment process again and then unrolled into a strip form to be galvanized.

When performing the galvanizing process, the strip is heated in a heating furnace and then infiltrated into the plating bath through a snout to form a galvanized layer on the surface of the strip, and then moved out of the plating bath by a pot roll. It goes through the transfer process.

The snout is a member provided to prevent plating defects when the strip is supplied to the plating bath as the temperature of the strip decreases. It plays a role in improving the quality of galvanizing by allowing it to flow into the plating bath in one state.

A snorkel is provided at the lower end of the snout, and the snorkel allows the strip to pass through while being stably immersed in the molten zinc contained in the plating bath, while allowing the zinc ash (Ash) generated during the plating process to fall into the plating bath. And it serves to block foreign substances such as zinc impurities (Dross) from being attached to the strip.

A snorkel dam is formed inside the snorkel, so that when the plating solution level inside the snorkel is higher than the plating solution level in the plating tank, the excess plating solution overflows the snorkel dam and is discharged to maintain the level of the plating solution. It is designed to collect foreign substances inside the snorkel.

In addition, a pumping unit is connected to the lower part of the snorkel dam to circulate molten zinc overflowing into the snorkel dam and collected foreign substances into the plating tank.

The snorkel is installed so that the lower part is submerged in the molten zinc contained in the plating bath, and accordingly, the snorkel is directly or indirectly affected by the high temperature (460 ° C. to 480 ° C.) environment caused by the molten zinc for a long time.

As a result, the snorkel inevitably undergoes thermal deformation, and after being separated from the snout at regular intervals in order to remove foreign substances on its surface, it is pulled out of the plating tank and inspected and repaired for maintenance.

Since the maintenance work of the snorkel needs to be performed at intervals of about 2 to 4 weeks before the snorkel undergoes thermal deformation, the maintenance work of the snorkel is frequently performed, which requires a lot of maintenance cost and time.

In addition, since the snorkel and the snorkel dam installed therein have a structure integrally attached to the snorkel, it is difficult to remove foreign substances on the inner surface of the snorkel and the snorkel dam during maintenance work, and it takes a lot of work.

Korean Patent Publication No. 10-2020-0045054

The present invention has been proposed to solve the conventional problems as described above, and an object of the present invention is to provide a steel zinc plating that can quickly and easily maintain a snorkel by detachably combining members constituting a snorkel. It is to provide a snorkel for equipment.

Another object of the present invention is to provide a snorkel for steel galvanizing equipment that can be quickly and easily maintained by configuring the snorkel to be separably assembled into upper and lower bodies.

In the snorkel for steel galvanizing facilities proposed by the present invention, the inside is formed as a space so that the strip can pass through, the upper end is coupled to the snout and the lower end is installed to be submerged in the plating bath. In the snorkel,

The snorkel is composed of an upper body and a lower body, and these upper and lower bodies are detachably fixed from each other by fixing means to provide a snorkel for steel galvanizing equipment.

Corresponding flanges are formed at the lower part of the upper body and at the upper end of the lower body, and a plurality of fixing holes are formed in each of the flanges to maintain a gap so that the fixing means can be fixed.

A flange is formed at an upper end of the upper body so as to be detachably coupled to the snout, and a plurality of fixing holes are formed in the flange portion while maintaining a gap so that a fixing bolt can be fastened.

The fixing means may consist of fixing bolts or fixing bolts and nuts, and a snorkel dam is provided inside the lower body, and the snorkel dam is detachably assembled to the lower body as a fixing member.

Corresponding flanges are formed at the lower end of the lower body and the circumferential surface of the lower end of the snorkel dam, and a plurality of fixing holes are formed in each of the flanges while maintaining a gap so that the fixing member can be fastened.

A pumping unit for circulating the galvanizing solution overflowing into the snorkel dam to a plating tank outside the snorkel is connected to the lower part of the snorkel, and the pumping unit is detachably connected to the snorkel.

The snorkel for steel-making galvanizing equipment according to the present invention is formed of upper and lower bodies, and these and the snorkel dam mounted therein can be detachably coupled to each other, so that maintenance work can be done quickly and easily. .

1 is a perspective view of a snorkel for steel manufacturing galvanizing equipment according to the present invention.
Figure 2 is an exploded perspective view of Figure 1;
3 is a front view in a state in which a pumping unit is connected to a snorkel for steel-making galvanizing equipment according to the present invention.
Figure 4 is a side view of Figure 3;
5 is a partially enlarged view showing that the upper and lower bodies of the snorkel for steel manufacturing galvanizing equipment according to the present invention are detachably coupled.
6 is a partially enlarged view showing that the snorkel dam of the snorkel for steel manufacturing galvanizing equipment according to the present invention is detachably coupled.

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

1 and 2 are perspective and exploded perspective views of a snorkel for steel galvanizing equipment according to the present invention, and FIGS. 3 and 4 are front and side views of a state in which a pumping unit is connected to a snorkel for steel manufacturing galvanizing equipment according to the present invention 5 and 6 show a partially enlarged view showing that the upper, lower body and snorkel dam of the snorkel for steel manufacturing galvanizing equipment according to the present invention are detachably coupled.

As shown, the snorkel for steel galvanizing equipment according to the present invention is formed as a space so that the strip can pass through, the upper end is coupled to a snout (not shown), and the lower end is submerged in a plating bath containing molten zinc. installed

The snorkel for steel-making galvanizing equipment according to the present invention consists of an upper body 2 and a lower body 4, and these upper body 2 and lower body 4 are detachably assembled from each other by fixing means.

The upper and lower bodies 2 and 4 are formed in a rectangular shape with a space inside, and the lower end of the upper body 2 is inserted into the upper part of the lower body 4 to be assembled.

In addition, flange parts 6 and 8 corresponding to each other are formed at the lower part of the upper body 2 and the upper part of the lower body 4, and the respective flange parts 6 and 8 maintain a gap and fixing means A plurality of fixing holes 10 and 12 are formed while maintaining intervals so that they can be fixed.

Substantially, the flange portion 6 formed on the upper body 2 is formed along the outside of the lower circumferential surface of the upper body 2, and the flange portion 8 formed on the lower body 4 is formed at the upper end of the lower body. It is formed in a shape extending outward so that the lower end of the upper body 2 can be inserted into the upper inner side of the lower body 4 and assembled.

Accordingly, it is possible to detachably couple the upper and lower bodies 2 and 4 by fixing the fixing means to the fixing holes 10 and 12 formed in each of the flange portions 6 and 8, the fixing means It may consist of a fixing bolt 14 and a nut 16.

In the embodiment of the present invention, the fixing means is shown as consisting of a fixing bolt 14 and a nut 16 as an example, but is not limited thereto and may be made of only a fixing bolt, in which case the fixing holes 10 and 12 ) is configured so that the female screw portion is formed on at least one or more so that the fixing bolt can be assembled in a screw fastening method.

And the upper end of the upper body 2 is formed with a flange portion 18 so that it can be detachably coupled to the snout, and the upper body 2 is fixed to the snout (not shown) on the flange portion 18. A plurality of fixing holes 20 are formed so that they can be fixed with fixing means such as bolts or nuts.

The snorkel for steel-making galvanizing equipment is installed in a state in which the lower body 2 is submerged in the plating solution contained in the plating tank and the upper body 4 is exposed to the outside of the plating solution.

Accordingly, the lower body (2) is highly likely to be thermally deformed by being directly affected by the high-temperature environment caused by molten zinc for a long time. It is preferable to form a material having a.

As the snorkel is composed of the upper and lower bodies (2) and (4) detachably coupled to each other, it is possible to quickly and easily perform maintenance work of the snorkel.

A snorkel dam (Dam) 22 is provided inside the snorkel so that the level of the plating solution inside the snorkel is higher than the level of the plating solution in the plating tank or foreign matter floating inside the snorkel is overflowed and accommodated. This snorkel dam 22 Is detachably mounted to the lower body 4 as a fixing member 24.

The snorkel dam 22 has a rectangular shape formed with a space so that the strip can pass therein.

In addition, the lower end of the lower body 4 and the circumferential surface of the lower end of the snorkel dam 22 have flange portions 26 and 28 corresponding to each other so that the snorkel dam 22 can be detachably mounted on the snorkel. Each is formed, and a plurality of fixing holes 30 and 32 are formed in each of the flange portions 26 and 28 so that the fixing member 24 composed of a fixing bolt or a fixing bolt and a nut can be fastened or fixed. there is.

If the snorkel dam 22 can be detachably coupled to the snorkel, the maintenance work of the snorkel can be done quickly and easily.

In particular, since the snorkel dam 22 can be separated from the snorkel, foreign substances on the surface of the lower body 4 and the surface of the snorkel dam 22 are quickly and easily removed compared to when the snorkel dam is attached to the inside of the snorkel as in the prior art can do.

In addition, a pumping unit 34 is connected to the lower part of the snorkel to circulate the galvanizing solution or foreign substances overflowing into the snorkel dam 22 to the plating tank outside the snorkel, and the pumping unit 34 is detachably connected to the snorkel.

The pumping unit 34 overflows the snorkel dam 22 by the motor 36 and the driving of the motor 36, and the molten zinc accommodated between the lower body 4 of the snorkel and the snorkel dam 22 is introduced back into the plating bath It consists of a connecting pipe 38.

At both ends of the snorkel dam 22, a connection portion 40 made of a flange portion is formed so that the pumping portion 34 can be detachably connected, and at one end of the connection pipe 38, the connection portion 40 and Another identical connection part 42 is provided so that the pumping part 34 can be detachably connected to a snorkel and a fixing member 44 made of bolts and nuts.

When the other end of the connecting pipe 38 is made to communicate with the plating bath, it is connected so as to be separable from the plating bath.

Reference numeral 46, which is not explained, indicates a gasket provided for sealing when the upper and lower bodies 2 and 4 are coupled.

The snorkel for steel galvanizing equipment according to the present invention as described above can be used when performing a galvanizing process on a steel sheet produced in a steel mill, and the upper body 2 is assembled to the snout and the lower body 4 is a plating bath. (not shown) is installed in a locked state.

The steel sheet to be plated can be pretreated in a coiled state, then unwound into a strip form to perform the galvanizing process. In the galvanizing process, the strip is heated in a heating furnace and then infiltrated into the plating bath through a snout. After forming a galvanized layer on the surface of the strip, it proceeds to a process of transferring it to the outside of the plating bath by a port roll (not shown).

At this time, since the galvanizing process is performed with the lower body 4 and the snorkel dam 22 submerged in the molten zinc contained in the plating tank, the snorkel is continuously subjected to high-temperature smoke. The lower body 4 and the snorkel dam 22 Since silver is made of a material with good heat resistance and corrosion resistance, it suppresses or prevents the snorkel from being thermally deformed.

After performing the galvanizing process for a certain period of time, in order to maintain the quality of the galvanized layer and prevent the occurrence of defects, the snorkel is separated and repair work is performed to remove foreign substances adhering to the surface.

At this time, since the snorkel consists of the upper and lower bodies (2) (4) and the snorkel dam (22) that are detachably coupled to each other, inspection and maintenance work can be performed while they are separated, so the work time can be greatly reduced. It can also facilitate maintenance and repair work.

In addition, the pumping unit 34 is also detachably connected to the snorkel, so that inspection and maintenance work of the snorkel can be further facilitated in a state in which the pumping unit 34 is separated from the snorkel.

In the above, the preferred embodiment of the present invention has been described for illustrative purposes, but is not limited thereto, and it is possible to make various modifications within the scope of the claims and the detailed description of the invention and the accompanying drawings.

2: upper body
4: lower body
6, 8, 18, 26, 28: flange part
10, 12, 20, 30, 32: fixed hole
14: fixing bolt
16: nut
22: snorkel dam
24, 44: fixing member
34: pumping unit
36: motor
38: to the connector
40, 42: connection part
46: gasket

Claims (7)

In the snorkel for iron and steel galvanizing equipment, the inside of which is formed as a space so that the strip can pass through, the upper end is coupled to the snout and the lower end is installed to be immersed in the plating bath,
The snorkel is composed of an upper body and a lower body, and the upper body and the lower body are detachably fixed from each other by a fixing means. The method of claim 1,
Corresponding flanges are formed at the lower part of the upper body and at the upper end of the lower body, and a plurality of fixing holes are formed at each flange part to maintain a gap so that the fixing means can be fixed. Snorkel for steel making galvanizing equipment. The method of claim 1,
A flange is formed at the upper end of the upper body so that it can be detachably coupled to the snout, and a plurality of fixing holes are formed on the flange portion to maintain a gap so that a fixing bolt can be fastened. Snorkel for equipment. The method of claim 1,
The fixing means is a snorkel for steel galvanizing equipment, characterized in that consisting of a fixing bolt or a fixing bolt and a nut. The method of claim 1,
A snorkel dam is provided inside the lower body, and the snorkel dam is detachably assembled to the lower body as a fixing member. The method of claim 5,
Corresponding flanges are formed at the lower end of the lower body and the circumferential surface of the lower end of the snorkel dam, and a plurality of fixing holes are formed at intervals so that the fixing member can be fastened to each flange. A snorkel for steel galvanizing plants. The method of claim 1,
A pumping unit for circulating the galvanizing solution overflowing into the snorkel dam to the plating tank outside the snorkel is connected to the lower part of the snorkel, and the pumping unit is detachably connected to the snorkel.

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