KR100797814B1 - Apparatus removing fume and having function to prevent a fire of rolling line - Google Patents

Abstract

PURPOSE: The present invention provides a fume removing device having a fire prevention function of a rolling mill that eliminates the discharge of fumes generated during cold rolling of a stainless steel manufacturing process and the risk of fire caused by high-speed rotation of a bearing in a multi-stage rolling mill. have.

Composition: The fume removing device having a fire prevention function of the rolling mill is provided with an inspection window 23 and driving means for elevating the transparent sheet 35 installed in the transverse direction with a plurality of weight rods 40 spaced apart by a predetermined distance. The control panel (25) determines the position of the inspection window (23) provided in the transparent sheet (35) which is lifted and lowered by the driving means (25) to control the driving of the fume discharge fan (19). The upper part of the inspection window applied to 51, the lower detection sensors 27 and 29 and the space inside the rolling mill 5 connected to the fume discharge pipe 17 to discharge the fume by the detection signals of the sensors 27 and 29. It consists of a fume induction pipe (31,31), the fire protection means 33 for detecting and extinguishing the fire generated in the rolling mill (5) by the fume not discharged to the fume induction pipe (31,31).

Effect: The fume removing device having the fire prevention function of this rolling mill automatically lifts the transparent sheet by the driving means, and detects the transparent sheet by the upper and lower detection sensors of the inspection window to control the fume discharge fan, thereby controlling the fume in the rolling mill. It is discharged through interconnected fume induction pipe and fume discharge pipe and equipped with fire prevention means to quickly detect and extinguish a fire in the rolling mill, eliminating the risk of fire, and increasing the operation rate of the equipment by removing the rolling mill from the fire hazard. The production quantity can be secured stably.

Fume, fume exhaust fan, rolling mill, cold rolling

Description

Fume removing device with fire prevention function of rolling mill {apparatus removing fume and having function to prevent a fire of rolling line}

1 is a perspective view of a cold rolling line to which the rolling mill fume removing device according to the prior art is applied.

Figure 2 is a perspective view of a cold rolling line applied with a fume removing device having a fire prevention function of the rolling mill according to the present invention.

Figure 3 is a partial cross-sectional perspective view of the fume removing device having a fire prevention function of the rolling mill according to the present invention.

4 is a partial cross-sectional perspective view of a state in which a weight rod is installed on a transparent sheet forming a door of a rolling mill.

* Description of the symbols for the main parts of the drawings

23: inspection window 25: driving means

27,29: Upper and lower detection sensors for inspection window

31,31: Hume guide pipe 33: Fire protection means

35: Transparent Sheet 37: Idle Reel

39: transparent sheet reel 40: weight rod

41: air motor 43,45: driven, driven sprocket                 

47: chain 51: control panel

53,55: first and second flame detection sensor 57: fire detection sensor

59: solenoid valve 61,63: first and second carbon dioxide injection nozzle

The present invention relates to a fume removing device having a fire prevention function of a rolling mill to remove the discharge of fumes generated during the cold rolling of the stainless manufacturing process and the risk of fire caused by the high-speed rotation of the bearing in the multi-stage rolling mill.

In general, hot rolled coils that have been hot rolled in a stainless steel manufacturing process are subjected to cold rolling again according to the demands of the consumer, thereby making the product beautiful in appearance and accurate in dimension.

As shown in FIG. 1, the cold rolling line is cold rolled while passing through the hot rolled strip 3, which is released from the payoff reel 1, between the rolling rolls 7 of the rolling mill 5, and the tension reel ( 9) in the form of a coil, at this time, between the rolling mill 5 and the pay-off reel (1), and between the rolling mill (5) and the tension reel (9), a pair of deflect rolls (11, 11) and The shape control rolls 13 and 13 are configured to maintain the horizontal state and shape of the strip 3 entering and exiting the rolling mill 5.

This cold rolling process removes the fume generated in the rolling mill 5 due to the use of the rolling oil and the high speed rotation of the bearing (not shown) supporting the multi-stage rolling roll 7 to generate environmental pollution and fire by the fume. You need to eliminate the risk.

To this end, the cold rolling line is provided with a fume removing device for removing the fume generated in the rolling mill (5).

However, the fume removing apparatus is provided on both sides of the rolling mill 5 to collect the fume generated in the rolling mill 5, and a fume collecting part 15 connected to the fume collecting part 15 to discharge the fume. The discharge pipe 17 and the fume discharge fan 19, and the inspection window 23 is opened and closed by the cylinder 21 to check and check the interior of the rolling mill (5) during rolling, the operator through the inspection window 23 Due to the frequent checks and experiences in the preparation for fire prevention, the rolling mill 5 is always exposed to the risk of safety accidents caused by a fire, and in the event of a fire, the operation rate of the facility may be lowered and a significant disruption in production may occur. do.

In view of the above, the present invention provides a fume removing device having a fire prevention function of a rolling mill that eliminates the discharge of fumes generated during cold rolling of a stainless steel manufacturing process and the risk of fire caused by high-speed rotation of bearings in a multi-stage rolling mill. Its purpose is to.

The fume removing device having a fire prevention function of a rolling mill for realizing this is carried out in a cold rolling process in which, after a hot rolling process, a strip that is released from a payoff reel is passed between rolling rolls of a rolling mill and wound in a coil form on a tension reel. It consists of a fume collecting unit for collecting fume generated in the inside, a fume discharge pipe for discharging the fume in the fume collecting unit, a fume discharge fan, and an inspection window for checking and inspecting the inside of the rolling mill.                         

The inspection window is provided and a plurality of weight rods are separated by a predetermined distance to lift the transparent sheet installed in the transverse direction to release the transparent sheet with the idle reel and the idle reel to support the transparent sheet to serve as a door of the rolling mill, or via the idle reel. Drive means for driving a transparent sheet reel to wind one transparent sheet,

Detecting the position of the transparent sheet lifted by the drive means to determine the position of the inspection window by applying an on, off signal for controlling the drive of the fume discharge fan to the control panel upper, lower detection sensor,

A fume induction pipe connecting the inner space of the rolling mill to the fume discharge pipe to discharge the fume of the rolling mill internal space into the fume discharge pipe when the fume discharge fan operates by the detection signal of the upper and lower detection sensors of the inspection window;

It includes a fire protection means for detecting and extinguishing the fire generated in the rolling mill by the fume not discharged into the fume induction pipe.

Here, the drive means is composed of an air motor, a drive sprocket installed on the air motor, a driven sprocket installed on the transparent sheet reel, and a chain connecting the drive and the driven sprocket.

And, the fire protection means is controlled on and off by the first and second flame detection sensor provided on the lower side inside the rolling mill, the transparent sheet is elevated, the fire detection sensor provided on the inside of the rolling mill, the control panel receiving the detection signal of these detection sensors It consists of a solenoid valve and a 1st and 2nd carbon dioxide injection nozzle which injects carbon dioxide supplied from this solenoid valve into a rolling mill.

Advantages and advantages of the present invention will be more apparent from the following detailed description based on the accompanying drawings.

2 is a perspective view of a cold rolling line to which a fume removing device having a fire prevention function of a rolling mill according to the present invention is applied, and the overall configuration of the rolling line is the same as that of the prior art of FIG. .

The cold rolling line is provided with a pay-off reel (1), a rolling mill (5), a tension reel (9), and deflect rolls (11, 11) and shape control rolls (13, 13). Since it is the same as one, description thereof will be omitted.

The fume removing device provided in the cold rolling line includes a fume collecting unit 15 for collecting the fume generated in the rolling mill 5, and a fume discharge pipe 17 for discharging the fume collected in the fume collecting unit 15; In the configuration of the fume discharge fan 19, the inspection window 23, the drive means 25, the upper inspection window, the lower detection sensor (27, 29), the fume induction pipe (31, 31) as shown in FIG. And the fire prevention means 33 is further provided.

Here, the driving means 25 lifts the transparent sheet 35 provided with the inspection window 23 to support the transparent sheet 35 so that the transparent sheet 35 serves as a door of the rolling mill 5. 37) and a transparent sheet reel 39 for releasing or winding the transparent sheet. In this transparent sheet 35, a plurality of weight rods 40 are spaced apart by a predetermined distance in the transverse direction so that the transparent sheet 35 can be lowered by its own weight.

The drive means 25 includes an air motor 41 for providing power to wind the transparent sheet 35 around the transparent sheet reel 39, a drive sprocket 43 provided on the air motor 41, and It consists of the driven sprocket 45 provided in the transparent sheet reel 39, and the chain 47 which connects this drive and driven sprockets 43 and 45 so that a power transmission is possible.

Guide rails 49 and 49 are formed on both front sides of the rolling mill 5 to smoothly advance the transparent sheet 35 which is lifted and lowered by the driving means 25, and the guide rails 49 and 49 are transparent. Both ends of the sheet 35 are guided and supported.

The inspection window upper and lower detection sensors 27 and 29 are installed at the upper and lower ends of the one side guide rail 49 to determine the position of the inspection window 23 provided in the transparent sheet 35 and to discharge the fume 19. It is configured and connected (not shown) to apply an on and off signal to the control panel 51 for controlling the driving of the < RTI ID = 0.0 >

The fume induction pipes 31 and 31 are configured to discharge the fume generated in the inside of the rolling mill 5 when the fume discharge fan 19 is operated by the detection signal of the lower detection sensor 29 of the inspection window. The inner space is connected to the fume discharge pipe 17. The fume induction pipes 31 and 31 penetrate the inside of the fume collecting parts 15 and 15.

And, the fire protection means 33 is configured to detect the fire generated in the rolling mill 5 by the fume not discharged into the fume induction pipe 31 and extinguish the flame. That is, the fire protection means 33 can be configured in various ways, but here, the first and second flame detection sensors 53 and 55, the fire detection sensor 57, the solenoid valve 59, and the first and second carbon dioxide injections. The example comprised with the nozzles 61 and 63 is illustrated.

The first and second flame detection sensors 53 and 55 are provided on the lower side inside the rolling mill 5 on which the transparent sheet 35 is lifted and the fire detection sensor 57 is provided on the upper side inside the rolling mill 5. In addition, the solenoid valve 59 is connected to the control panel 51 so as to be controllable, and the solenoid valve 59 is installed in the carbon dioxide pipeline 65 so as to control the carbon dioxide injected into the first and second carbon dioxide injection nozzles 61 and 63.

On the other hand, the oil receiving 67 provided to collect the rolling oil under the rolling mill 5 is connected to the rolling oil recovery line 69.

4 is a partial cross-sectional perspective view of the state in which the weight rod 40 is installed in the transparent sheet 35 forming the door of the rolling mill 5, and the weight rod 40 is attached to the transparent sheet 35 with the adhesive tape 71. FIG. It shows the state to install in.

Referring to the operation of the fume removing device having a fire prevention function of the rolling mill as follows.

The fume generated in the rolling mill 5 by the operation of the fume discharge fan 19 is discharged through the fume collecting unit 15 and the fume discharge pipe 17, and the fume induction pipe 31 and the fume discharge pipe 17 are discharged. Is discharged through.

When the air motor 41 is driven in this state, the drive sprocket 43 drives the driven sprocket 45 connected by the chain 47 and thus the transparent sheet reel 39 in the direction in which the transparent sheet 35 is wound. Will rotate.

Thus, the transparent sheet 35 is raised in front of the rolling mill 5, the rise is detected by the inspection window upper sensor 27 is applied to the control panel 51. The control panel 51 stops the discharge of the fume by stopping the fume discharge fan 19.                     

When the air motor 41 is stopped while the fume discharge is stopped, the gravity rod 40 releases the transparent sheet 35 from the transparent sheet reel 39 by its own weight and lowers it.

Therefore, the transparent sheet 35 is lowered in front of the rolling mill 5, the lowering is sensed by the inspection window lower detection sensor 29 is applied to the control panel 51. The control panel 51 drives the fume discharge fan 19 to discharge the fume.

When a fire is generated in the rolling mill 5 while discharging the fume as described above, one of the first and second flame detection sensors 53 and 55 and the fire detection sensor 57 detects one of the detection signals to the control panel 51. Is approved.

Accordingly, the control panel 51 controls the solenoid valve 59 to inject carbon dioxide into the first and second carbon dioxide injection nozzles 61 and 63 to extinguish the flame in the rolling mill 5.

As described above, the fume removing device having the fire prevention function of the rolling mill automatically lifts the transparent sheet by a driving means, and detects the transparent sheet by the upper and lower detection sensors of the inspection window to control the fume discharge fan so that the fume in the rolling mill is mutually controlled. It is discharged through connected fume induction pipe and fume discharge pipe and equipped with fire prevention means to quickly detect and extinguish fire in the rolling mill, eliminating the risk of fire significantly, and releasing the rolling mill from the fire hazard to increase the operation rate of equipment. Can be secured stably.

Claims (3)

In the fume removal device having a fire prevention function of the rolling mill, The inspection sheet 23 is provided with a plurality of weight rods 40 are spaced apart by a predetermined distance to raise the transparent sheet 35 installed in the transverse direction to serve as a door of the rolling mill 5 the transparent sheet 35 Drive means 25 for driving the idle reel 37 supporting the) and the transparent sheet reel 39 for releasing or winding the transparent sheet 35 supported by the idle reel 37, The control panel 51 controls an on / off signal for controlling the driving of the fume discharge fan 19 by determining the position of the inspection window 23 provided in the transparent sheet 35 lifted by the driving means 25. Upper and lower detection sensors (27 and 29) The space inside the rolling mill 5 is discharged so that the fume in the space inside the rolling mill 5 is discharged when the fume discharge fan 19 is operated by the detection signals of the upper and lower detection sensors 27 and 29 of the inspection window. Hume induction pipes (31, 31) connected to the fume discharge pipe (17), And a fire protection means 33 for detecting and extinguishing the fire generated in the rolling mill 5 by the fume not discharged into the fume induction pipes 31 and 31, The drive means 25 includes an air motor 41, a drive sprocket 43 installed on the air motor 41, a driven sprocket 45 installed on the transparent sheet reel 39, the drive and driven sprockets ( Fume removal device having a fire prevention function of the rolling mill, characterized in that consisting of a chain 47 to interconnect 43,45. delete The method of claim 1, wherein the fire protection means 33 is the first and second flame detection sensor 53, 55, the rolling mill 5 provided in the lower side of the rolling mill 5, the transparent sheet 35 is elevated A solenoid valve controlled on and off by a control panel 51 receiving a detection signal of the fire detection sensor 57, the first and second flame detection oaths 53 and 55, and the fire detection sensor 57 provided in the upper side ( 59), the fume removing device having a fire protection function of the rolling mill, characterized in that consisting of the first and second carbon dioxide injection nozzles (61, 63) for injecting the carbon dioxide supplied from the solenoid valve (59) into the rolling mill.

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