KR100498885B1 - Device for clearing the dust of filter bag - Google Patents

Abstract

The present invention relates to a pulse air dust collector for collecting dust generated in the process of charging / withdrawing the coke of the dry fire extinguishing equipment, on the flow path of the discharge duct 133, a sensing unit having an optical transmission / reception sensor Concentration sensor 10 for detecting the dust concentration of the purified air passing through the filter cloth (131) receives the signal of (11) and directly connected to the stack 135, as well as the flow line of the first opening and closing valve ( The first discharge pipe line 20 which is opened and closed by 21 and the second discharge pipe line which is indirectly connected to the stack 135 through the cyclone 35 and whose flow line is opened and closed by the second opening / closing valve 31 ( 30 is respectively mounted, the first control device for opening and closing the first and second opening and closing valves (21, 31) by outputting an operation signal to the concentration sensor 10, the first and second solenoid valves (41, 42) 40 is connected to the exhaust pipe of the cyclone (35) by receiving the signal of the dust level detection upper and lower detection sensors (51, 52) The second control device 50 for outputting the opening and closing signal to the battery valve 53 is connected, so that it is accurately determined the replacement time of the filter cloth built in the dust collector, and even if the filter cloth is broken, dust is not discharged to the outside. Therefore, air pollution caused by breakage of manure cloth is prevented.

Description

Dust absorption device for dust filter perforation {Device for clearing the dust of filter bag}

The present invention relates to a pulse air precipitator for collecting dust generated during the charging / withdrawal of the red coke of the dry fire extinguishing equipment, in particular to absorb and remove the dust emitted due to damage to the filter bag built in the pulse air precipitator The present invention relates to a dust absorbing device at the time of perforation of the filter cloth for dust collectors.

In general, a pulse air collector is a pulse zet type dust collector used in a coke-drying fire extinguishing system, and the dust collector is charged with a cooling device or cooled with a red coke manufactured in a coke oven. It is equipped with a filter bag that absorbs the dust generated during the extraction of the cooling coke cooled in the device.

That is, the coke-drying fire extinguishing facility is charged with a charging device 110 for charging a red coke heated from a coke oven (not shown) to the cooling chamber 100 as shown in FIG. 1, and cooled from the cooling chamber 100. A drawing device 120 for drawing the coke; It is composed of a dust collector 130 for removing the dust generated in the operation process of the charging device 110 and takeout device 120 through the suction force.

In addition, the dust collector 130, while filtering the dust flowing from the charging device 110 and the take-out device 120, and is filtered and dropped by a plurality of filter cloth 131, filter cloth 131 installed through a snap ring. Screw conveyor 132 for transporting the dust, the discharge duct 133, the transport duct of the air is removed by the filter cloth 131, the exhaust duct 133 is mounted on the rear end and the blower 134 It consists of the stack 135 which is the discharge line of the air which the flow velocity increased by.

Therefore, dust scattered from the charging device 110 and the extraction device 120 is sucked into the dust collector 130 through the suction devices 111 and 121, and the dust sucked into the dust collector 130 is filtered by the filter cloth 131. It is conveyed during the operation of the screw conveyor 132 in a state of being laminated with a hopper forming the lower side.

Of course, the air discharged while the dust is removed by the filter cloth 131 of the dust collector 130 is discharged to the outside through the discharge duct 133, the discharge speed is increased by the blower 134 It is discharged through the stack 135 in the state.

However, the dust collector 130 is not provided with the proper means for checking the operating state of the filter cloth 131, when the replacement time of the filter cloth 131 has elapsed or the differential pressure rises, the stack 135 Through the polluted air as it is exhausted to the outside, there was a problem that acts as a major cause of air pollution.

Therefore, the present invention was invented to solve the problems described above, and automatically detects the dust concentration in the air inhaled by the dust collector and the dust is filtered by the filter cloth, when the exhaust air is contaminated above the specified value automatically The present invention relates to a dust absorbing device at the time of breaking through the manure cloth for dust collector, which can be prevented in advance to prevent major pollution sources caused by environmental pollution.

Hereinafter, described in detail with reference to the accompanying drawings illustrating the operation according to the present invention.

2 is an operational state diagram showing a dust treatment process of the dust collector according to the present invention, Figure 3 is a partially enlarged view schematically showing a dust scattering prevention device of the dust collector according to the present invention, the interior of the dust collector 130 In addition to being mounted in a plurality of spaces, the filter cloth 131 for filtering the dust sucked from the charge / take-out device (110, 120), and the screw conveyor 132 for transporting the dust dropped by the filter cloth (131) In addition, the exhaust duct 133, which is a transport pipe of the purified air from which the dust is removed by the filter cloth 131, is connected to the rear end of the discharge duct 133, as well as the purified air whose flow rate is increased by the blower 134. In the dust collector for the coke fire extinguishing facility consisting of a stack 135, which is a discharge pipe path of the discharge pipe, on the flow path of the discharge duct 133, a filter cloth 131 receives a signal from the detection unit 11 provided with an optical transmission / reception sensor A sense of concentration to detect the dust concentration of the purified air which passed through) The sensor 135 and the stack 135 are directly connected to the stack 135 as well as the first discharge pipe 20 and the cyclone 35 through which the flow pipe is opened and closed by the first opening / closing valve 21. In addition to the indirect connection to the flow passage is connected to the second discharge pipe (30), which is opened and closed by the second opening and closing valve 31, respectively, the first and second solenoid valves (41, 42) to the concentration sensor (10) The first control device 40 for opening and closing the first and second open / close valves 21 and 31 by outputting the operation signal is connected to the upper and lower limit detection sensors for detecting the dust level in the exhaust pipe of the cyclone 35. The second control device 50 for receiving the signals of 51 and 52 and outputting the open / close signal to the rotary valve 53 is connected.

First, since the cooling chamber 100, the charging device 110, and the drawing device 120 of the present invention are the same as in the prior art, a detailed description thereof will be omitted, except that only the shape of the discharge duct 133 is changed. I affirm this.

Here, the discharge duct 133, the concentration sensor 10 for detecting the concentration of the dust passing through the filter cloth 131 on the flow passage is mounted, the rear end is directly connected to the stack 135 It is added that the first discharge pipe line 20 and the second discharge pipe line 30 which are indirectly connected to the stack 135 through the cyclone 35 are respectively mounted.

In addition, the concentration sensor 10 is a cylindrical light source sensor inserted into the fastening hole 13 formed on the flow path of the discharge duct 133, the filter cloth in the center of the body of the housing 12 forming the appearance A discharge passage 12a through which the purge air passing through 131 passes is formed through.

In addition, the sensing unit 11 having the lens unit 16 for transmitting a light source is mounted on one side of the housing 12, and the reflector 14 for retransmitting the signal of the lens unit 16 to the sensing unit on the other side. And a purging adapter 15 which is a transfer path of the light source signal in the space between the lens unit 16 and the reflector 14.

Then, the first opening and closing valve 21 which is opened and closed by the first control device 40 which will be described later on the flow passage of the first discharge pipe 20 is mounted, the flow of the second discharge pipe (30) The second opening / closing valve 31 which is opened and closed by the first control device 40 to be described later is mounted on the pipeline.

The first control device 40 is a device that opens and closes the second discharge pipe line 30 based on a signal output from the detection unit 11 of the concentration sensor 10. The first solenoid valve 41 connected to the first open / close valve 21 of 20 and the first solenoid valve 42 connected to the second open / close valve 31 of the second discharge line 30 are electrically connected to each other. have.

In addition, the cyclone 35 is a dust collecting device for collecting dust particles introduced into the second discharge pipe line 30 using its own weight through centrifugal force, and a rotary valve 53 is mounted on the outlet side of the lower end thereof. On the upper side of the rotary valve 53, upper and lower limit detection sensors 51 and 52 for detecting dust upper and lower limit levels are mounted.

The second control device 50 is a cyclone opening device that outputs an operation signal to the rotary valve 53. The second control device 50 receives the signals of the upper / lower limit detection sensors 51 and 52 to open and close the rotary valve 53. In addition to outputting the signal, the operation signal is output to the drive motor 54 for the transfer conveyor 54a.

Hereinafter, described in detail with reference to the accompanying drawings illustrating the operation according to the present invention.

First, in the process of charging the red coke heated from the coke oven (not shown) into the cooling chamber 100 and then cooling it, the dust scattered from the charging device 110 and the take-out device 120 is collected in the dust collector 130. Is inhaled by.

At this time, the contaminated air sucked in the dust collector 130 is discharged into the atmosphere through the stack 135 via the discharge duct 133 in the state that the dust is filtered by the filter cloth 131, these processes are detected in the concentration It is sensed by the sensor 10.

In this process, the light source emitted from the sensing unit 11 of the concentration sensor 10 is transmitted to the reflector 14 through the lens unit 16 and the purging adapter 15, which is transmitted to the reflector 14. The light source is automatically sent back from the reflector 14 to the sensing unit 11 by the parallax correction principle.

At this time, in the first control device 40, the light source transmitted from the sensing unit 11 to the reflector 14 and the light source returned from the reflector 14 to the sensing unit 11 are compared with each other. If the dust concentration is higher than the specified value (4 to 20kV), an operation signal is output.

That is, when the filter cloth 131 installed in the internal space of the dust collector 130 is damaged, the contamination state of the air is detected by the concentration sensor 10, so that the detection unit 11 removes the air pollution signal. 1 is output to the control device 40.

At this time, since the first control device 40 outputs an operation signal to the first solenoid valve 41 to close the first opening / closing valve 21, the flow path of the first discharge line 20 is closed, and the second Since the operation signal is output to the solenoid valve 42 to open the second open / close valve 31, the flow line of the second discharge line 30 is opened.

That is, the contaminated air sucked into the second discharge line 30 with the opening of the second opening / closing valve 31 is sent to the cyclone 35 to remove dust by centrifugal force. It drops to the bottom surface of the cyclone, and at the same time the purge air is discharged to the outside through the stack 135 via the rear end line (37).

On the other hand, the dust falling on the bottom surface of the cyclone 35 is collected in the dust tap 54 forming the lower space of the cyclone, wherein the level of dust collected in the dust tap 54 is the upper limit detection sensor 51. It is detected and output to the second control device 50.

At this time, when the dust of the dust tap 54 is equal to or more than the prescribed value, the driving control for driving the rotary valve 53 and the conveying conveyor 54a in the second control device 50 received the signal of the phase detection sensor 51. Outputs an operation signal to the transmitter 54.

Therefore, the dust filled in the dust tap 54 is discharged through the outlet of the cyclone by opening the rotary valve 53 for the cyclone 35, and is deposited on the conveying conveyor 54a as well as being transferred to the post-treatment process. To be removed.

Of course, when the dust filled in the dust tap 54 of the cyclone 35 is removed and detected by the lower limit sensor 52, the second control device 50 receiving the signal of the lower limit sensor 52 is received. In addition, the closing signal is output to the rotary valve 53 as well as the stop signal to the driving motor 54.

In this process, when the worker exchanges the filter cloth 131 of the dust collector 130, the detection unit 11 outputs a normal signal to the first control device 40, the first control device receiving such a normal signal At 40, an operation signal is output to the second solenoid valve 42 to close the second open / close valve 31.

Of course, since the first control device 40 outputs an operation signal to the first solenoid valve 41 to open the first opening / closing valve 21, the purified air passing through the filter cloth 131 is connected to the first discharge pipe. Via 20 is to be discharged to the normal process through the stack (135).

As described above, according to the dust absorbing device when the filter cloth for pore breakers according to the present invention, the replacement time of the filter cloth built in the dust collector is accurately determined, and even if the filter cloth is broken, dust is not discharged to the outside, There is an effect that the air pollution caused by the breakage of the cloth is fundamentally prevented.

1 is an operational state diagram showing a dust treatment process of the dust collecting apparatus according to the prior art,

2 is an operational state diagram showing a dust treatment process of the dust collecting apparatus according to the present invention;

Figure 3 is a partially enlarged view schematically showing a dust scattering prevention device of the dust collector according to the present invention.

Explanation of symbols on the main parts of the drawings

130: dust collector 110, 120: charging / withdrawing device

131: filter cloth 133: discharge duct

10: concentration detection sensor 11: detection unit

14 reflector 15 fuzzing adapter

20,30: 1st, 2nd exhaust pipe 21,31: 1st, 2nd valve

40,50: 1st, 2nd control device 41, 42: 1st, 2nd solenoid valve

51,52: Upper / lower limit detection sensor 53: Rotary valve

Claims (1)

A screw is provided in the interior space of the dust collector 130, and the filter cloth 131 for filtering the dust sucked from the charge / take-out device (110, 120), and the dust is filtered by the filter cloth (131) to drop the dust Conveyor 132, the discharge duct 133, which is a conveying pipe for purifying air from which dust is removed by the filter cloth 131, and is connected to the rear end of the discharge duct 133, as well as the flow rate by the blower 134 In the dust collector for coke fire extinguishing system consisting of the stack 135, which is the discharge pipe of the increased purification air, On the flow path of the discharge duct 133, the concentration sensor 10 for detecting the dust concentration of the purified air passing through the filter cloth 131 receives the signal of the detection unit 11 with the light transmission / reception sensor And, as well as being directly connected to the stack 135, the flow pipe is indirectly connected to the stack 135 through the cyclone 35 and the first discharge pipe 20 is opened and closed by the first opening and closing valve 21, The second discharge pipe paths 30, the flow path of which is opened and closed by the second opening / closing valve 31, are respectively mounted, and the operation signal is output to the concentration detecting sensor 10 by the first and second solenoid valves 41 and 42. The first control device 40 for opening and closing the first and second open / close valves 21 and 31 is connected, and the upper and lower limit detection sensors 51 and 52 for detecting the dust level are connected to the discharge line of the cyclone 35. At the time of pore breakage for the dust collector, characterized in that the second control device 50 for receiving the signal and outputting the opening and closing signal to the rotary valve 53 is connected Jin absorber.