KR200218130Y1 - Sync roll preheater - Google Patents

Abstract

The present invention relates to a sink roll preheating apparatus, and in particular, a firebrick 19 and a high temperature insulating material 16 are installed on an inner surface thereof, and a plurality of temperature sensors 9 are externally mounted on one side thereof. A pair of preheaters 10 having a central portion separated from each other and a blower having one end inserted into one side of the preheater 10 by a pipe 8 and driven by an electric motor 23 at the other end ( 22 is installed, the main gas supply pipes 26 and 27 are connected to be located in front of the blower 22, and the air supply pipe 29 and the pilot gas supply pipe 28 are ignited by the auto igniter 32. A main burner 25 having a built-in pilot burner 31 to which 30 is connected; A drive shaft 38 and a driven shaft 38-1 are respectively installed under the pair of preheating zones 10 by a plurality of bearing blocks 36, and the drive shaft 38 and the driven shaft 38-1. Drive rolls 37 and driven rolls 37-1 for driving the rails 42 on both ends are respectively coupled, and the driving of the electric motor 11 is a rotary gear 39 and a drive gear 40 ( Sync roll preheating device, characterized in that consisting of the opening and closing drive unit 50 is transmitted to the drive roll (37) by.

Description

Sync roll preheater

1 is a schematic diagram showing the working state of the galvanizing bath.

2 is a main perspective view of the sink roll preheating apparatus according to the present invention.

Figure 3 is a bottom view of the main portion of the sink roll preheating apparatus according to the present invention.

4 is a plan view of main parts of the sink roll preheating apparatus according to the present invention.

* Explanation of symbols for main parts of the drawings

1: Air knife 2: Zinc plating tank

3: sink roll 4: heating furnace

5 strip 7 roll support

8: pipe 9: temperature sensor

10: preheating table 11: electric motor

12: operating rod 16: high temperature insulation

17: fixed pin 18: the suspension plate

20: firebrick 21: fixed steel

22: blower 23: electric motor

25: main burner 26: main gas supply pipe

27: automatic valve 28: pilot gas supply pipe

29: air supply pipe 30: automatic valve

31: pilot valve 32: automatic ignition

33: Bolt 34: Flange

35: cylindrical steel 36: bearing block

37: driving roll 37-1: driven roll

38: drive shaft 38-1: driven shaft

39: rotating gear 40: driving gear

41: chain 42: rail

43: stopper

The present invention relates to a sink roll preheating device, and in particular, a sink roll capable of preheating the sink roll sufficiently in a short time without damaging the surface of the sink roll by using a preheating table, a burner device, and an automatic temperature sensor. Sink Roll).

In general, the hot-dip galvanizing equipment of a steel mill is a zinc plating tank in which the strip 5 passing through the heating furnace 4 is redirected by the sink roll 3 in the galvanizing tank 2 as shown in FIG. Pass through.

At this time, the strip 5 is controlled by the amount of zinc plating attached to the surface of the strip by the air knife 1 installed on the upper part of the galvanizing tank 2, and cooled by a cooling device (not shown) installed on the upper part of the air knife. And proceeds to the next step.

On the other hand, the sink roll 3 in the galvanizing bath 2 serves to switch the direction of the strip 5 entering the galvanizing bath in the vertical direction, the structure of which is fixed to the lower part of the roll support 7 Four holes 6 are formed on both sides in an empty state.

Here, when the sink roll 3 is charged into the galvanizing tank 2, the roll support 7 is lifted up using a hoist (not shown) and slowly charged into the galvanizing tank 2.

At this time, the molten zinc inside the galvanizing bath 2 has a temperature of 460 ° C. or higher, and the surface temperature of the sink roll 3 is cold, so when the sink roll 3 is completely submerged in hot molten zinc, the inner space of the sink roll The air is discharged from the air together with the explosion, which causes molten zinc to be scattered, resulting in a safety accident.

Therefore, in order to eliminate such a problem, conventionally, before loading the sink roll 3 into the galvanizing bath 2, the surface of the sink roll is preheated to a temperature similar to that of the molten zinc using a torch. It was charged inside.

However, in the sink roll 3 and the preheating method using the torch, damage of the surface of the sink roll due to the flame of the torch occurs, a long time is taken, and there is a risk of a safety accident.

The object of the present invention is to provide a safe, high speed work roll preheating device without damaging the surface of the sink roll to solve the conventional problems as described above.

In order to achieve the above object, the present invention includes a pair of preheating zones in which a firebrick and a high temperature insulating material are installed on an inner surface, a plurality of temperature sensors are mounted on one side thereof, and a central portion is formed to be opened and closed; One end is inserted into one side of the preheating stage by a pipe, a blower driven by an electric motor is installed at the other end, the main gas supply pipe is connected to be located in front of the blower, and the air supply pipe is ignited by an auto igniter. A main burner having a built-in pilot burner connected to a pilot gas supply pipe; Drive shafts and driven shafts are respectively installed in the lower portion of the pair of preheating beds by a plurality of bearing blocks, and drive rolls and driven rolls driving on rails are coupled to both ends of the drive shaft and driven shafts, respectively. It provides a sink roll preheating device, characterized in that the drive is composed of an opening and closing drive unit which is transmitted to the drive roll by the rotary gear and the drive gear.

The present invention will be described in detail with reference to the drawings.

2 is a main perspective view of the sink roll preheating apparatus according to the present invention.

The steel preheating table 10 installed near the facility of the galvanizing tank 2 is formed so that the center part is separated, and two stages of refractory bricks 19 are placed on the bottom surface of the interior. The high temperature insulating material 16 and the susceptor plate 18 are attached to the inner wall by using the fixing pin 17.

In addition, a circular refractory brick 20 is installed at the lower left wall of the preheater 10 so that the main burner 25 can be inserted, and a cylindrical main burner having the right side inserted into the circular refractory brick 20 is fixed steel. A blower 22 which is fixed to the preheating table 10 by 21 and operated by the electric motor 23 is provided at the left end.

In addition, the main burner 25 is connected to the main gas supply pipe 26 in which gas supply is controlled by the automatic valve 27, and the pilot burner 31 installed at the front of the main burner to ignite the main burner is connected to the main burner 31. One end is connected to the air supply pipe connected to the blower 24, one end is connected to the main gas supply pipe 26 is connected to the pilot gas supply pipe 28 controlled by the automatic valve (30).

At the rear end of the pycut burner 31, an auto igniter 32 for igniting the pilot burner is provided.

On the other hand, the two temperature sensors 9 which are installed to be spaced up and down on one side of the preheater 10 are respectively inserted into the cylindrical steel 35 welded to penetrate the walls of the preheater, so that the flange 34 and the bolt 33 Is fixed by.

3 is a bottom view of the main part of the sink roll preheating apparatus according to the present invention, and FIG. 4 is a top view of the main part of the sink roll preheating apparatus according to the present invention.

A drive shaft 38 and a driven shaft 38-1 are installed below the pair of preheating tables 10 so as to be rotatable by two bearing blocks 36. The drive shaft 38 and the driven shaft 38 are rotated. The driving roll 37 and the driven roll 37-1 are respectively coupled to both ends of -1).

And the drive gear 40 is coupled to one side of the drive shaft 38 to drive the drive roll 37, the drive gear 40 and the rotary gear 39 is connected by a chain 41, The rotary gear is connected by an actuating rod 12 to an electric motor 11 controlled by a DCS (Direct Control System).

Here, the driving roll 37 and the driven roll 37-1 travel on the rails 42 on which the stopper 43 for preventing separation is formed at both ends.

Hereinafter will be described the operation and effect of the sink roll preheating apparatus according to the present invention.

Transfer the sink roll to the top of the preheating table 10 using a hoist before charging the sink roll 3 into the galvanizing bath 2 for galvanizing the strip 5 passed through the furnace 4. Then, the electrical signal of the DCS (Direct Control System) is sent to the electric motor 11 to drive the operating rod 12 and the rotary gear 39.

The rotation of the rotary gear 39 is transmitted to the drive gear 40 by the chain 41, and the rotation of the drive gear 40 is transmitted to the drive roll 37 so that the guiding roll drives the rail 42. While opening the preheated table 10 (Close).

At this time, the operator lowers the sink roll 3 into the preheating table 10 and then sends an electrical signal from the DCS terminal to the electric motor 11 to operate the rotary gear 39 and the driving gear 40, thereby providing 2 Two preheating zones 10 are crossed.

In this case, the DCS terminal opens the automatic valve 30 to ignite the pilot burner 31 to supply gas to the gas supply pipe 26, and sends an electric signal to the electric motor 23 to operate the blower 22. , By the operation of the blower to supply air to the air supply pipe (29).

In addition, the D.C.S terminal sends an electric signal to the ignition device 32 to splatter the flame to ignite the pilot burner 31 which supplies gas and air to the inside.

At this time, when the ignition is completed in the pilot burner 31, when the automatic valve 27 is opened to supply the gas through the gas supply pipe 26 to ignite the main burner 25, the main burner 25 is the pilot burner 31. Automatic ignition is achieved by).

Meanwhile, the internal proper temperature of the preheater 10 is input to the two temperature sensors 9 by using a DCS terminal, and the temperature sensor detects the temperature of the preheater inside the main burner until the input temperature is detected. The sink roll 3 is preheated by continuously opening the automatic valve 27 of the gas supply pipe 26 which supplies gas to the 25.

When the preheating of the sink roll 3 is completed, an electric signal is sent to the electric motor 23 to stop the operation of the electric motor 23, and both the main burner 25 and the pilot burner 31 are extinguished. The DCS terminal sends an electric signal to the electric motor 11 to open the two preheaters 10.

In addition, when the preheating table 10 is opened, the worker lifts the preheated sink roll 3 built in the preheating table to the upper part by using a hoist to move the upper part of the galvanizing bath 2 and slowly into the galvanizing bath. The down loading completes the installation of the sink roll for galvanizing the surface of the strip (5).

The present invention can prevent the safety accident in advance by preheating the surface of the sink roll in a short time by automatic temperature control, and provides an effect of improving productivity.

Claims (1)

A fireproof brick 19 and a high temperature insulation material 16 are installed on an inner surface thereof, and a plurality of temperature sensors 9 are externally mounted on one side thereof, and a pair of preheaters 10 having a central portion separated to open and close; One end is inserted into one side of the preheating table 10 by a pipe 8, and a blower 22 driven by the electric motor 23 is installed at the other end thereof, so that the blower 22 is located in front of the blower 22. A main burner 25 to which the main gas supply pipe 26 is connected, and a pilot burner 31 to which the air supply pipe 29 and the pilot gas supply pipe 28 are connected so as to be ignited by the auto ignition machine 32; A drive shaft 38 and a driven shaft 38-1 are respectively installed under the pair of preheating zones 10 by a plurality of bearing blocks 36, and the drive shaft 38 and the driven shaft 38-1. Drive rolls 37 and driven rolls 37-1 for driving the rails 42 on both ends are respectively coupled, and the driving of the electric motor 11 is a rotary gear 39 and a drive gear 40 ( Sync roll preheating device, characterized in that consisting of the opening and closing drive unit 50 is transmitted to the drive roll (37) by.