JPH0718149U - Cleaning device for dust collection duct - Google Patents

Abstract

(57) [Summary] [Purpose] To easily remove deposits such as splashes and dust that have adhered to the direct drawing holes of electric furnace lids by remote control. [Structure] From an advancing / retreating rod 17 connected to a gantry 2 through a swinging mechanism, a vibrator 19 provided on the advancing / retreating rod 17, and a tapered metal object 20 provided on the tip of the advancing / retreating rod 17. The tapered metal piece 20 is characterized by being provided with a cooling water discharge hole 21 opened at the tip and a plurality of discharge holes 22 communicating the tip end and the tail end.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an apparatus for removing splash and dust adhering to a dust collection duct such as a direct drawing hole of an electric furnace lid.

[0002]

[Prior art]

 In the operation of an electric furnace, dust collection performance deteriorates if splash or dust adheres to the dust collection duct such as the direct drawing hole of the furnace lid. For this reason, it is necessary to remove the adhered matter promptly, but the conventional removal work required a lot of labor because it was manually performed. In addition, since the area around the dust collection duct is hot, improvements were desired from the viewpoint of work environment and safety.

[0003]

[Problems to be solved by the device]

 An object of the present invention is to easily mechanically remove splashes and dust adhering to a dust collection duct such as a direct drawing hole of an electric furnace lid by remote control.

[0004]

[Means for Solving the Problems]

 The dust collecting duct cleaning device of the present invention which solves the above-mentioned problems includes an advancing / retreating rod connected to a pedestal, a vibrator provided on the advancing / retreating rod, and a tapered shape provided at the tip of the advancing / retreating rod. The tapered metal object is provided with a cooling water discharge hole opened at the tip and a plurality of discharge holes communicating the tip part and the tail end.

The advancing / retreating rod is connected to a mount via a swinging mechanism.

Further, the advancing / retreating rod is pivotally connected to a pedestal.

[0007]

[Action]

 A tapered metal object is provided at the tip of the advancing / retreating rod that is inserted into a dust collection duct such as a direct drawing hole of the electric furnace lid, and the tapered metal object has a cooling water discharge hole opened at the tip. Has been. When cooling water is discharged from the cooling water discharge hole while inserting the tip of the rod into the dust collecting duct, the high temperature splash and dust adhering to the inner surface of the dust collecting duct are rapidly cooled and easily separated. When the tapered metal object is pushed into the dust collection duct and vibrated by the vibrator, the adhered material is destroyed by the tapered metal object, and the destroyed adhered material is discharged from the discharge hole provided in the tapered metal object to the dust collection duct. It is discharged downward.

Further, when the advancing / retreating rod is attached to the pedestal via the swing mechanism, the positioning for inserting the rod into the dust collecting duct is easy. Also, when the advancing / retreating rod is mounted so as to be rotatable around the mount, the advancing / retreating rod can be retracted and stored.

[0009]

【Example】

 Hereinafter, the device of the present invention will be described in detail with reference to the drawings. FIG. 1 shows a side view of a main cleaning device 1 for cleaning a direct drawing hole of an electric furnace lid as a dust collecting duct. The main cleaning device 1 is installed at a position substantially below the turning locus of the electric furnace lid 3. Has been done. FIG. 2 shows the cleaning device 1 in an enlarged manner, and a revolving frame 5 is attached to a revolving shaft 4 mounted on the side surface of the pedestal 2 so as to be revolvable around the pedestal 2. The upper part of the swivel frame 5 is connected to the bracket 8 via the arc movement shaft 6, and the lower part thereof is connected to the bracket 8 via the connecting rod 7. A spring 9 is fitted to the connecting rod 7 so that the bracket 8 can perform an arc operation in the direction of arrow A about the arc operation shaft 6. As shown in detail in FIG. 3, a turning hydraulic cylinder 10 for retracting and retracting the advancing / retreating rod 17 is connected between the bracket 8 and the gantry 2.

Shafts 11 for rocking motion penetrate through the upper and lower parts of the bracket 8, and springs 12 are provided on both sides of each rocking motion horizontal shaft 11, 11 as shown in FIG. 3 (only the upper side is shown). , 12 are fitted to each other, the connecting portion 14 with the supporting member 13 is fitted to the outside thereof, and the nut 15 is attached to the outside thereof so that the supporting member 13 can be swung in the direction of the arrow B. is there. The swinging motion of the support member 13 in the arrow B direction and the circular arc motion of the bracket 8 in the arrow A direction constitute a swinging mechanism of the advancing / retreating rod 17.

As shown in FIG. 2, an advancing / retreating hydraulic cylinder 16 is attached to the support member 13, and a cylinder rod 16 A thereof is connected to an advancing / retreating rod 17. The advancing / retreating rod 17 is guided by a guide hole 24 provided in the support member 13, and can be advanced / retreatable by the advancing / retreating hydraulic cylinder 16 in the direction of the direct drawing hole 18 of the electric furnace lid 3. A vibrator 19 is built in the advancing / retreating rod 17, and a tapered metal object 20 is provided at the tip of the advancing / retreating rod 17. The tapered metal piece 20 is provided with a cooling water discharge hole 21 opened at the tip, and as shown in FIG. 4, a plurality of (four in the figure) discharge holes 22 communicating the tip side and the tail end side are provided. It is provided, and splash, dust, etc. can be discharged downward through the discharge hole 22. Reference numeral 23 indicates a cooling water conduit.

Next, a method of using the cleaning device will be described. After rotating the electric furnace lid 3 shown in FIG. 1 to stop the direct drawing hole 18 substantially above the advancing / retreating rod 17, the turning hydraulic cylinder 10 shown in FIG. Is turned and stopped when it reaches below the direct drawing hole 18. Next, the advancing / retreating hydraulic cylinder 16 is operated to advance the advancing / retreating rod 17, and the tapered metal piece 20 is inserted into the direct drawing hole 18. At this time, even if the axes of the tapered metal piece 20 and the straight drawing hole 18 are deviated from each other, the tapered metal piece 20 is tapered, and the bracket 8 can move in an arc in the direction of arrow A about the rotation shaft 6. Since the support member 13 is swingable in the direction of the arrow B by the spring 9 (FIG. 3), the tapered metal member 20 is guided to the peripheral edge of the direct drawing hole 18 and the inside of the direct drawing hole 18 is guided. Will be guided to.

Next, the cooling water is ejected from the cooling water discharge hole 21 to rapidly cool the deposit S such as splatter or dust on the inner surface of the direct drawing hole 18 to make it easy to peel off, and at the same time, the vibrator 19 is used to taper it. When the metal piece 20 is pushed into the direct drawing hole 18 while vibrating, the deposit S on the inner surface of the direct drawing hole 18 is destroyed and discharged through the discharge hole 22. After the cleaning of the direct drawing hole 18 is completed, the advancing / retreating hydraulic cylinder 16 retracts the advancing / retreating rod 17, and the swiveling hydraulic cylinder 10 pivots the advancing / retreating rod 17 in the direction of arrow C (FIG. 3). So that it will not interfere with other work.

The material of the tapered metal object is a material having a strength necessary to destroy the attached matter S such as splash and dust by vibration, for example, SS400. Further, the example of the furnace lid direct drawing hole of the electric furnace has been given as an example of the dust collecting duct, but the present invention can also be applied to other movable dust collecting ducts.

The remote operation of the above operation is performed as follows. After rotating the electric furnace lid 3 shown in FIG. 1 to stop the direct drawing hole 18 above the working position of the advancing / retreating rod 17, the turning hydraulic cylinder 10 shown in FIG. 3 in the retracted position is operated. The rod 17 for advancing and retreating is rotated. When the advancing / retreating rod 17 reaches below the direct drawing hole 18, it is stopped by the limit switch 25.

Next, in response to the signal from the limit switch 25, the advancing / retreating hydraulic cylinder 16 operates, and the advancing / retreating rod 17 advances. When the tapered metal object 20 reaches the direct drawing hole 18, the cooling water is ejected from the cooling water discharge hole 21 by the signal of the limit switch 27. When the advancing / retreating rod 17 further advances, the vibrator 19 is activated by the signal from the limit switch 28. When the advancing / retreating rod 17 advances to the upper limit, the advancing / retreating rod 17 stops by a signal from the limit switch 29, and a signal from the limit switch 29 causes a timer (not shown) to count down and then retract. When the advancing / retreating rod 17 descends to the lower limit, the limit switch 30 detects this, and the turning hydraulic cylinder 10 is actuated by this signal and the advancing / retreating rod 17 turns to the retracted position.

[0017]

[Effect of device]

 According to the present invention, the splatter and dust adhering to the dust collection duct such as the direct drawing hole of the electric furnace lid can be easily removed by remote control, so that the labor saving effect can be obtained. Further, since the work around the dust collection duct, which is dusty and hot at a high temperature, is mechanized, a great effect can be obtained in improving the working environment and safety.

[Brief description of drawings]

FIG. 1 is a side view (partially sectional view) showing an embodiment of a dust collecting duct cleaning device of the present invention.

FIG. 2 is an enlarged view of the cleaning device of FIG.

FIG. 3 is a plan view taken along the line YY of FIG.

FIG. 4 is a plan view of a tapered hardware drawing used in the present invention.

[Explanation of symbols]

 1 Cleaning device for dust collecting duct 2 Stand 3 Electric furnace lid 4 Revolving shaft 5 Revolving frame 6 Arc motion shaft 7 Connecting rod 8 Bracket 9 Spring 10 Revolving hydraulic cylinder 11 Swing motion shaft 12 Spring 13 Support member 14 connection part 15 nut 16 hydraulic cylinder for advancing / retreating 17 rod for advancing / retreating 18 direct drawing hole 19 vibrator 20 tapered metal object 21 cooling water discharge hole 22 discharge hole 23 cooling water conduit 24 guide hole 25-30 limit switch S adhering matter

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor, Yuji Ito 59 Nittetsu Plant Design Co., Ltd., Nakahara 46, Toba-ku, Kitakyushu, Fukuoka

Claims (3)

[Scope of utility model registration request] 1. A reciprocating rod (1) connected to a pedestal (2).
7), a vibrator (19) provided on the advancing / retreating rod (17), and a tapered metal object (20) provided on the tip of the advancing / retreating rod (17).
0) is provided with a cooling water discharge hole (21) opened at the tip and a plurality of discharge holes (22) communicating between the tip and the tail end. 2. The dust collecting duct cleaning device according to claim 1, wherein the advancing / retreating rod (17) is connected to the mount (2) through a swinging mechanism. 3. The dust collecting duct cleaning device according to claim 1, wherein the advancing / retreating rod (17) is pivotally connected to the mount (2).