KR20050019462A - Device for removing dust in duct of dust collector - Google Patents

Abstract

PURPOSE: To provide a device for removing dust in a transfer line of a dust collector, which is able to prevent a line from being clogged by the dust by mechanically removing the dust attached to the transfer line of a dust collecting equipment. CONSTITUTION: The device is connected with a dust collecting hopper (110) of a dust collecting equipment and is installed on a transfer line (120) where collected dust is transferred. The device includes an air inhalation part to allow the outside air to be compulsorily flown in the transfer line to remove dust attached to the transfer line. The air inhalation part comprises a cylindrical housing, a rail member (21), a rotary ring (22), a waveform part (23), a lifting member (24), an inlet hole (26), an injection pipe (27), and a cover (28).

Description

Device for preventing dust seizure of dust collection equipment {Device for removing dust in duct of dust collector}

The present invention relates to a dust collecting equipment for collecting and discharging dust discharged from an electric furnace or converter, and more particularly, to prevent dust sticking of the dust collecting line to prevent dust from being stuck on the lines of the dust collecting equipment. Relates to a device.

For example, an electric furnace refers to a furnace for heating and dissolving a metal or alloy using electricity. When a high voltage is applied to three electrodes vertically connected to the upper ceiling of an electric furnace, a high temperature arc heat is generated to dissolve the scrap metal in the electric furnace. do.

At this time, during the melting of scrap metal, fine dust generated from a large amount of elemental oxide fumes and subsidiary materials is generated, and these dusts are sent to the dust collector through the dust collecting duct in the upper part of the induct where the duct and the electric furnace installed in the large ceiling are installed. do.

The dust collecting equipment is as shown in Figure 1, the dust collecting line 100 to be transported, and a plurality of collecting hoppers 110 connected to the dust collecting line to collect the fine dust collected, connected to the bottom of the collecting hopper Transport line 120 for transporting the collected dust, dust storage silo 130 installed on the transport line exit side, discharge line connected to the top of the collecting hopper to discharge the dust is removed to the chimney 150 ( 140).

The dust collector adopts a technique of absorbing dust and then shaking it out through a bag filter installed in a hopper in a dry manner.

Therefore, the dust dropped from the hopper is collected in the lower portion of the hopper is discharged to the transfer line and transferred to the silo by a transfer conveyor installed in the transfer line.

In this process, the flow of air in the transfer line flows to the hopper, which prevents the transfer of dust quickly.

Therefore, when dust is stagnant or moisture-containing dust in the transfer line is attached to the inner wall of the transfer line, and as more dust is fixed, the transfer line is clogged in severe cases.

Therefore, conventionally, after checking the attachment state of the dust through check holes installed in various places of the transfer line to remove the fixed dust, the worker should separate and remove the fixed dust by hitting the side of the transfer line using a jig. This is a difficult and inconvenient problem.

Accordingly, the present invention has been made in order to solve the above problems, it is possible to prevent the line is clogged by the dust is fixed by mechanically removing the dust on the transfer line of the dust collecting equipment for transferring the dust. It is an object of the present invention to provide a dust preventing device for dust collection equipment.

In order to achieve the object as described above, the present invention is to remove the fixing dust through the suction force of the external air sucked into the transfer line by using the negative pressure hanging on the transfer line.

To this end, the present invention is installed in the dust transfer line of the dust collecting equipment includes an air suction unit for removing the dust stuck to the transfer line by introducing external air into the inside.

In addition, the present invention includes a drive unit for controlling the air intake unit when the dust is fixed to the transfer line.

In the present invention, the drive unit is preferably installed between the hopper and the transfer line of the dust is discharged dust collection equipment to be controlled according to the pressure difference between the hopper and the transfer line.

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

1 is a schematic view showing a dust collecting equipment is installed dust preventing device according to the present invention, the dust collecting equipment is a dust collecting line 100 to be transported, and is connected to the dust collecting line to collect the fine dust A plurality of collection hoppers 110, a transport line 120 for transporting the collected dust is connected to the bottom of the collection hopper, a dust storage silo 130 is installed on the exit of the transport line, the dust is connected to the top of the collection hopper And a discharge line 140 for discharging the removed gas to the chimney 150. The dust sticking prevention device according to the present embodiment is installed on a transfer line and connected to the collection hopper to remove dust stuck in the transfer line. Done.

In addition, Figure 2 is a partial cutaway perspective view showing a dust preventing device according to the present invention, Figure 3 is a partial detailed view of Figure 2 according to the present invention, Figure 4 is a schematic side cross-sectional view of Figure 2 according to the present invention. to be.

According to the above drawings, the apparatus is installed in the dust transfer line 120 forcibly introducing external air into the air suction unit for removing the dust stuck to the transfer line 120 by the suction pressure of the external air And, it is installed between the collecting hopper 110 and the transfer line 120, the dust is discharged and connected to the air suction unit is operated by the pressure difference between the collecting hopper 110 and the transfer line 120 to the air And a drive for controlling the suction.

That is, the driving unit controls the air intake unit by using the pressure difference as a power source by using the pressure in the collecting hopper 110 lower than the pressure in the conveying line 120.

First, as shown in FIG. 3, a cylinder housing 10 divided into two chambers by a piston 11 slidably installed therein, one chamber of the cylinder housing 10, and The hopper side pressure pipe 12 which communicates the collection hopper 110, the opening-closing valve 14 provided in one side of this hopper side pressure pipe 12, the other chamber of the cylinder housing 10 and the transfer line 120 communicate with each other. And a piston rod (15) connected to the piston (11) and extending outwardly of the cylinder housing (10) installed at one side of the line side pressure pipe (13), the line side pressure pipe (13). .

Therefore, the piston 11 is moved in the longitudinal direction of the cylinder housing 10 according to the pressure difference between the collecting hopper 110 and the transfer line 120, and the piston rod 15 connected to the piston 11 is stretched and moved. It is to operate the air intake connected to the rod (15).

On the other hand, the air suction unit is installed in the cylindrical housing 20 installed on one side of the transfer line 120, the rail member 21 provided along the inner circumferential surface of the housing 20, and the rail member 21 to be rotatable And one side of the rotary ring 22 connected to the piston rod 15, the arcuate corrugated portion 23 integrally formed at the upper end of the rotary ring 22, and the elevating contact with the inner wall of the housing 20. The elevating member 24, which is possibly installed, is integrally formed at the lower end of the elevating member 24 and penetrated along the upper end of the elliptical corrugated portion 25 and the elevating member 24, which engage the corrugated portion. In communication with the inside of the elevating member (24) through the inlet hole (26), the lower end of the housing (20) through which the outside air flows when the rising relative to the (20), and the outer front end to the inside through the side of the transfer line (120) Is in communication with the injection pipe 27 for injecting the external air into the transfer line (120).

Accordingly, when the piston rod 15 is stretched and operated, the rotary ring 22 is turned, and the elevating member 24 is raised while the corrugated portion of the rotary ring 22 and the corrugated portion of the elevating member 24 placed thereon are changed. Or to descend.

The corrugated portions 23 and 25 formed on the rotary ring 22 and the elevating member 24 are continuously formed along a line, and the floor portions and the valley portions are interlocked with each other by staggering positions of the floor portions. have.

In addition, according to the present embodiment, the housing 20 is provided with a cover 28 covering an upper end, and the cover 28 has an air distribution hole 29 formed therein and a foreign material inflow preventing plate above the distribution hole 29. An air inlet hole of the elevating member 24 is installed through the gap between the inner surface of the cover 28 and the elevating member 24 when air is introduced through the distribution hole 29 when the elevating member 24 is raised. 26) to be distributed.

In addition, a guide bar 31 penetrating the lid 28 is vertically installed at the center of the upper end of the elevating member 24 to return the elevating member 24, and the elastic spring 32 is provided on the guide bar 31. It is fitted in the structure that is elastically installed between the cover 28 and the elevating member (24).

Therefore, the elevating member 24 is to be lowered by the return force of the elastic spring 32 when descending after lifting.

Hereinafter, the operation of the present invention will be described with reference to FIG.

Dust introduced through the dust collecting line 100 is separated from the collecting hopper 110 is sent to the dust transfer line 120 and is moved along the transfer line 120 is introduced into the silo 130.

In this operating state, the pressure inside the collecting hopper 110 always acts as a negative pressure with respect to the pressure inside the transfer line 120 to which the dust is moved.

Therefore, when the dust is fixed to the inside of the conveying line 120, when the apparatus is operated to introduce external air into the conveying line 120, the external air being sucked into the collecting hopper 110 along the conveying line 120. Dust may be dropped from the transfer line 120.

That is, under normal operation, the opening / closing valve 14 installed in each of the pressure pipes 12 and 13 is closed and the piston rod 15 of the cylinder housing 10 is extended to operate the rotary ring 22 and the elevating member 24. The corrugated portions 23 and 25 respectively formed in the mutually interlocked state are engaged with each other, and the lifting member 24 is lowered.

In this state, when the operator operates a switch such as a control panel to start the fixing dust removal operation, power is applied to each of the on / off valves 14 to open and operate the on / off valves 14.

As the on / off valve 14 is opened, the internal pressure of the collecting hopper 110 is applied to the hopper-side pressure tube 12, and the pressure inside the transfer line 120 is applied to the line-side pressure tube 13, so that the negative pressure is collected. The piston 11 in the cylinder housing 10 moves toward the hopper side pressure tube 12 by the strong suction pressure on the hopper side.

Accordingly, the piston rod 15 connected to the piston 11 enters the cylinder housing 20 and contracts, and the rotary ring 22 connected to the piston rod 15 according to the contracting operation of the piston rod 15. ) Rotates counterclockwise in the drawing along the rail member 21.

As the rotary ring 22 is rotated by a predetermined angle, the corrugated portion 23 of the first interlaced rotary ring 22 and the corrugated portion 25 of the elevating member 24 are arranged to face each other, and thus the elevating member 24 is disposed. Will be lifted.

That is, the floor of the corrugation part 23 formed in the rotary ring 22 is located in the valley of the corrugation part 25 of the elevating member 24, but as the angle is rotated as described above, the floor of the corrugation part of the rotary ring 22 is formed. The portion is moved to the floor of the elevating member 24 of the corrugated portion, and thus the elevating member 24 is pushed up by the height of the rotating ring 22 corrugated portion.

As the elevating member 24 is raised, the inflow hole 26 of the elevating member 24, which is in close contact with the inner circumferential surface of the housing 20, is exposed to the outside. Accordingly, the transfer line 120 is connected to the inflow hole 26 and the housing. It becomes the state connected with the outside through the injection pipe 27 installed in 20.

Since the transfer line 120 is in a negative pressure with respect to the outside, the outside air introduced through the distribution hole 29 of the cover 28 is introduced through the inlet hole 26 to lower the elevating member 24. Through the injection pipe 27 to the outside of the housing 20 through the injection pipe 27 is strongly sucked into the transfer line 120 side.

Therefore, the dust stuck in the transfer line 120 is separated by the air flowing into the transfer line 120 side through the injection pipe 27.

Dust separated from the transfer line 120 is introduced into the hopper 110 for a while together with the outside air, and with the removal of dust, the pressure inside the hopper 110 and the transfer line by the outside air introduced into the hopper 110. Internal pressure 120 is parallel.

Accordingly, the piston 11 in the cylinder housing 10 is moved to the center of the cylinder housing 10, and the rotary ring 22 rotates clockwise as the piston rod 15 moves forward.

As the rotary ring 22 is rotated, the floor parts are separated from each other and the rotary ring 22 is moved by the return force of the elastic spring 32 installed between the elevating member 24 and the cover 28. It is further rotated and the ridge portion of the corrugated portion of the rotating ring 22 is moved toward the valley portion of the corrugated portion of the elevating member 24, and thus the elevating member 24 is lowered and returned to its original position.

According to the dust seizure prevention device of the dust collector according to the present invention as described above, it is possible to remove the dust stuck to the transfer line without a physical impact can reduce the manpower and time required for the removal work, and the deformation of the equipment It can be prevented.

In addition, dust collection is prevented to improve dust collection efficiency, thereby improving the environment.

1 is a schematic view showing a dust collecting equipment is installed dust preventing device according to the present invention,

Figure 2 is a partially cut perspective view showing a dust stuck prevention device according to the present invention,

3 is a partial detailed view of FIG. 2 in accordance with the present invention;

4 is a schematic side cross-sectional view of FIG. 2 in accordance with the present invention;

Figure 5 is a partially cut perspective view showing an operating state of the dust stuck prevention device according to the present invention.

Explanation of symbols on the main parts of the drawings

10: cylinder housing 11: piston

12 Hopper side pressure pipe 13 Line side pressure pipe

14: on-off valve 15: piston rod

20 housing 21 rail member

22: rotation ring 23, 25: wave portion

24: elevating member 26: inflow hole

27: injection pipe 28: cover

29: hole 31: guide bar

32: elastic spring

Claims (4)

It is connected to the dust collection hopper of the dust collecting equipment is installed in the transfer line to collect the dust is transported by forcing the outside air into the interior including an air suction for removing the dust stuck to the transfer line by the suction pressure of the outside air Dust fixing device of dust collection equipment. The method of claim 1, wherein the air suction portion is a cylindrical housing installed on one side of the transfer line, a rail member provided along the inner circumferential surface of the housing, a rotary ring fitted to the rail member to be rotatable, for rotating the rotary ring A drive unit, an arc-shaped corrugated portion integrally formed at the upper end of the rotary ring, an elevating member which is installed to be lowered in contact with the inner wall of the housing, and an arc-shaped corrugated form integrally formed at the lower end of the elevating member to engage the corrugated portion. The inlet hole is formed through the upper and lower parts of the elevating member to communicate with the inside of the elevating member through the lower end of the housing and the outer end thereof communicates with the inner side through the side of the transfer line. Dust sticking prevention device of the dust collector, characterized in that it comprises a spray pipe for introducing air into the transfer line . According to claim 2, The housing is provided with a cover covering the top, the air distribution hole is formed in the cover is installed foreign matter inlet prevention plate is installed above the distribution hole, the guide bar penetrating through the cover in the center of the elevating member top is vertical Is installed in the guide bar is fitted with an elastic spring is installed between the cover and the elevating member elastic dust collecting device of the dust collection equipment, characterized in that the elastic installation. According to claim 2 or 3, wherein the drive unit is a cylinder housing divided into two chambers by a piston slidably installed therein, a hopper side pressure pipe for communicating one chamber of the cylinder housing and the collecting hopper, An opening / closing valve installed at one side of the hopper side pressure pipe, a line side pressure pipe communicating with the other chamber of the cylinder housing and the transfer line, an opening and closing valve installed at one side of the line side pressure pipe, connected to the piston and extending outward of the cylinder housing, Dust sticking prevention device of the dust collecting equipment, characterized in that it comprises a piston rod connected to the rotary ring.