KR20030039262A - An apparatus for removing dust from curved portions of a duct - Google Patents

Abstract

PURPOSE: A device for removing adhered materials from a bent pipe of a duct is provided to remove the adhered materials from the bent pipe by expanding and contracting the inner surface of the bent pipe. CONSTITUTION: A second elastic pack(50) covers the inner surface of a duct(10) airtightly, and is integrated with an air ejection lip(52) opened/closed by pressure. A pressure supply unit supplies high-pressure air to the second elastic pack, and expands the second elastic pack. The pressure supply unit includes a first elastic pack(40) expanded and contracted by pressure, a cylinder(60) connected to an air supply tube(66) and supplying the high-pressure air to the first elastic pack, and a driving motor(62) moving the cylinder forward and backward.

Description

An apparatus for removing dust from curved portions of a duct}

The present invention relates to an apparatus for removing a curved portion attaching to a duct, and more particularly, to a curved portion of a duct capable of removing deposits such as dust attached to an inner surface thereof by expanding and expanding an inner surface of the curved portion of the duct. It relates to a pipe deposit removal device.

In general, the inner surface of the duct is to be attached to the conveying material such as dust, in particular more attached to the curved portion than the straight portion of the duct, which is because the conveying path of the conveying material is changed in the curved portion of the duct This is because the inner surface is hit a lot.

FIG. 1 is a schematic view for explaining a general use state of a duct with reference to a coil rewinding facility of a steel mill, and a state in which the oriented electrical steel coil C is released by the reeling reel 110 is schematically illustrated.

The suction part 120 is provided in a shape surrounding the coil C, and dust such as MgO powder sucked through the suction part 120 is not shown through the duct 130 connected to the suction part 120. Is transferred to a dust collector. Reference numeral 132 denotes an elastic connecting pipe connecting the suction part 120 and the duct 130.

However, dust such as MgO powder transferred to the dust collecting facility through the duct 130 is attached and grown on the inner surface of the duct 130, in particular the inner surface of the curved pipe portion, which is the internal size of the duct 130 It gradually reduces to reduce dust collection performance, such as dust transfer ability of MgO powder, which is transferred to the dust collector through the duct 130, and also causes an overload to a driving motor (not shown) for forming a vacuum inside the duct 130. To have a problem of lowering the service life.

In addition, when dust, such as MgO powder, is excessively attached to the duct 130, the problem of causing productivity deterioration, such as the need to stop the operation of the equipment and then remove the deposits inside the duct 130.

SUMMARY OF THE INVENTION The present invention has been made to solve such a conventional problem. The present invention provides a method for removing ducts such as dust, which is attached to and grown on an inner surface of a duct, in particular, an inner surface of a curved pipe portion, without stopping the operation of the equipment. Its purpose is to provide a bend attachment removal device.

1 is a schematic diagram for explaining a state of use of a general duct with reference to a coil rewinder of a steel mill;

Figures 2 and 3 is a schematic configuration diagram showing the curved portion attachment removal device of the duct according to the invention as a whole;

4 is a detailed view of a curved portion of a duct in which the main portion of the present invention is installed;

Fig. 5 is a cross sectional plan view of Fig. 4;

6 is an exploded perspective view of FIG. 4.

※ Explanation of symbols about main part of drawing ※

10: duct 18: damper

22: weight 24: wire rope

28: damper opening and closing bar 30: housing

31: groove 40: first elastic pack

42: opening and closing 44: guide

46: moving plate 50: second elastic pack

52: air discharge lip 60: cylinder

62: drive motor 66: air supply pipe

As a technical configuration for achieving the above object, the present invention, in the device configured to remove the adhered to the curved pipe portion of the duct for absorbing the dust, such as MgO powder and transported to the dust treatment location, A second elastic pack of elastic material is integrally formed to cover the surface and is opened and closed by pressure toward the inside of the duct, and a pressure supply unit for supplying high pressure air to expand the second elastic pack. By providing a bent portion attachment removal device of the duct characterized in that it comprises.

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

Figure 2 and Figure 3 is a schematic configuration diagram of the bent pipe attachment removing device of the duct according to the present invention as a whole, the main duct (10) is installed to absorb the dust, such as MgO powder and transport it to the dust facility And branched into a dust absorbing duct 12 which is formed horizontally and extends toward the dust generating unit, and a duct 14 for removing deposits which is vertically formed and connected to the deposit collecting tank 16. 12) and a damper 18 is installed at the branch portion of the attachment removing duct 14 to connect the main duct 10 and the dust absorption duct 12 to each other or to remove the attachment from the main duct 10 and the attachment. It is operated to connect the ducts 14 to each other.

That is, the rotation support shaft 20 is mounted on the duct 14 so as to be axially rotatable, and one end of the damper 18 is fixedly installed on the rotation support shaft 20 so that the rotation support shaft 20 can be rotated. By rotation, the damper 18 is rotated in the direction of blocking the duct 14 (see FIG. 2) or in the direction of opening the duct 14 (see FIG. 3). In addition, a stopper 19 is installed in the duct 14 to block the damper 18 from being rotated further in a rising direction in a horizontal state as shown in FIG. 2.

In addition, the weight support 22 is fixed to the rotation support shaft 20 is driven so that the rotation support shaft 20 is rotated in the axial direction by the vertical lifting of the weight (22).

The weight 22 is connected to one end of the wire rope 24 and the wire rope 24 is connected to the damper opening and closing rod 28 through a pulley 26 mounted on the main duct 10. The damper opening and closing rod 28 is mounted to move along the groove 31 of the housing 30.

As shown in more detail in FIGS. 4 to 6, the housing 30 is fixedly installed on the outer surface of the curved portion of the duct 10, which is the portion to which dust is most attached, and inside the housing 30. A first elastic pack 40 formed of a rubber material and having elasticity is accommodated therein, wherein the first elastic pack 40 is closed when the internal pressure is in a low pressure state and closed when the internal pressure is in a high pressure state. ) Is formed to be connected to provide air to the second elastic pack 50, the second elastic pack 50 is formed of an elastic material of a rubber material surrounding a predetermined area of the inner surface of the duct 10.

The second elastic pack 50 has a plurality of air discharge lip 42 is formed in a plurality of places to close the closed pressure when the internal pressure is low pressure state, and open when the high pressure state is inward to the inside of the duct 10 do.

The inside of the housing 30 is mounted with a plate-shaped moving plate 46 to be advanced toward the duct 10 or to the opposite side of the duct 10, the duct 10 of the moving plate 60 The first elastic pack 40 is fixed to the side surface, and the guide hole 44 having the guide groove 45 lengthened up and down is fixed to the center portion of the surface opposite the duct 10, and the guide groove 45 is fixed. The damper opening and closing bar 28 is accommodated.

In addition, an air compression cylinder 60 is installed inside the housing 30, and the cylinder 60 is connected to a crank shaft 64 which is rotationally driven by the drive motor 62 to be connected to an internal piston. C) is configured to compress air while moving forward and backward, and the cylinder 60 is connected and installed to supply high pressure air to the inside of the first elastic pack 40 through an air supply pipe 66. do.

The groove 31 formed in the housing 30 is formed farther from the duct 10 toward the lower side.

The operation of the present invention having the above configuration will be described.

When MgO powder or the like is transported through the duct 10, when a predetermined time elapses, dust is attached to the inner surface of the duct 10, in particular, the inner surface of the curved pipe portion, and starts to grow.

However, the inner surface of the duct 10 of the present invention is wrapped in a form in which the second elastic pack 50 is coated, and dusts will be attached to and grown on the surface of the second elastic pack 50.

In order to remove dust grown on the surface of the second elastic pack 50, the drive motor 62 is supplied with power to rotate and drive the crankshaft 64, and the crankshaft 64 rotates. As a result, the internal piston of the cylinder 60 reciprocates and the high pressure air is supplied to the first elastic pack 40 through the air supply pipe 66.

That is, the first elastic pack 40 starts to expand by the supply of the high pressure air, and simultaneously discharges the high pressure air toward the second elastic pack 50 through the opening and closing lip 42.

First, the movable plate 46 is moved away from the duct 10 by the expansion of the first elastic pack 40, whereby the guide hole 44 fixedly installed on the movable plate 46 is It moves in the direction away from the duct 10. Therefore, the damper opening and closing bar 28 accommodated in the guide groove 45 of the guide 44 is moved along the groove 31 to pull the wire rope 24, the weight installed connected to the wire rope 24 The weight 22 is raised to open the damper 18 to connect the main duct 10 and the attachment removal duct 14.

Next, the high-pressure air is supplied to the second elastic pack 50 through the opening and closing lip 42 of the first elastic pack 40 so that the second elastic pack 50 is removed from the inner surface of the duct 10. It is contracted in a direction away from it, whereby foreign matter such as dust adhered to and grown on the surface of the second elastic pack 50 is separated from the second elastic pack 50 through the deposit removal duct (14) 16) can be removed.

When the driving motor 62 is stopped after a suitable time has elapsed, no further high pressure air is supplied to the first elastic pack 40, and the high pressure air is discharged through the air discharge lip 52 of the second elastic pack 50. Since the air is continuously discharged toward the duct 10, the damper opening and closing rod 28 is moved toward the duct 10 along the groove 31 by the weight of the weight 22 while the internal air pressure of the first elastic pack 40 decreases. It is moved and restored to the initial state, and at the same time rotated to the initial state by the damper 18 to close the deposit removal duct 14.

As described above, according to the bent portion attachment removing device of the duct according to the present invention, the inner surface of the duct is formed of a rubber material so as to surround the first elastic pack having elasticity, and the attachment is attached to the surface of the first elastic pack. And by causing the growth and shrinking of the first elastic pack to easily remove the deposits.

Claims (2)

In the device configured to remove the adhered to the curved pipe portion of the duct for absorbing the dust such as MgO powder and transported to the dust treatment location, The second elastic pack 50 of the elastic material is mounted to cover the inner surface of the duct 10 in an airtight manner, and the air discharge lip 52 which is opened and closed by pressure is integrally formed to face the inside of the duct 10. Apparatus for removing the curved portion attached to the duct, characterized in that it comprises a pressure supply for supplying high-pressure air to expand the second elastic pack (50). The method of claim 1, wherein the pressure supply unit is connected to the space between the second elastic pack 50 and the duct 10, the first elastic pack 40 is contracted and expanded by pressure and the first elastic A curved pipe portion of the duct, characterized by consisting of a cylinder (60) connected via an air supply pipe (66) to supply high pressure air to the pack (40), and a drive motor (62) for moving the cylinder (60) forward and backward. Attachment Removal Device.