KR20190081124A - Bag filter pulse control system - Google Patents

Abstract

The present invention relates to a bag filter pulsing device of a dust collector for collecting and processing dust generated in a work site of pulverizing, transport and transfer, or other processes of industrial facilities, and more specifically, to a bag filter pulse control system capable of improving lifespan and efficiency of dust collection of a bag filter. The bag filter pulse control system of a dust collector according to the present invention is capable of improving dust collection performance and efficiency by allowing a user to select and apply various operation modes according to environments. Also, the bag filter pulse control system of a dust collector is capable of monitoring pressure difference between an introduction space portion and a discharge space portion, pressure of a bag filter, and pulsing pressure in each compartment by using a single system, thereby reducing investment costs and expecting reduction of power of a fan and extension of lifespan of a bag filter. In addition, since dedusting is performed at an optimal dedusting time point with minimum compressed air, it is possible to reduce an amount of consumed compressed air.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bag filter pulse control system,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bag filter pulsing control system for exhausting a bag filter of a dust collector for collecting and treating dust generated in the crushing, transporting and moving of industrial facilities or other processing sites, To a bag filter pulsing control system capable of improving life span and improving dust collecting efficiency.

The dust collecting device is a device for removing solid or liquid fine particles present in the air. The dust collecting device has been used to remove soot and dust from the exhaust gas from boilers, roasting furnaces, heating furnaces, waste incinerators, etc., and is used in workplaces where chemical powders, steel, wood, cement production and other fine dusts are generated in large quantities In addition, in the manufacturing industry, it is installed and used for improving the quality of products by cleaning the air in the IC process and the pharmaceutical process.

Such a dust collecting apparatus is divided into mechanical, electric, dry or wet type according to the operation mode, and a mechanical type (for example, a gravity settling chamber, a collision type dust collecting apparatus, a centrifugal force cyclone Etc.) method can be used. These dry dust collectors have recently been developed to be able to collect dust with a relatively low pressure drop even to 1 μm particles due to technological development and structure improvement. However, in order to collect ultrafine particles having a particle size of 1 μm or less, Is required.

The flutter bag house is one of the air pollution prevention devices that filter out the harmful particles contained in the atmospheric pollutants and the exhaust gas from the factories and prevent them from being discharged. As a filtration method of these filter dust collectors, there are a filtration system in which dust is attached to the surface of a filter material such as a thin paper or fiber and a filtration system in which a thick layer of filter material such as glass fiber or cotton fiber is formed into a bag shape or a plate shape, There is a filtration method that collects dust in the fiber layer.

At the beginning of the operation, the dust is separated only by the filter medium, but the dust layer accumulated on the surface of the filter medium over time serves as the filter body. As the dust layer functions as the main filtration layer, the collection efficiency increases, but at the same time, it can act as a resistor which interrupts the gas flow.

Such a filter dust collector generally exhibits an efficiency of 99% or more when the dust size is 1.0 탆 or more. The principle of collecting dust in this device is a complex action such as collision, direct block, surface deposition by electrostatic force, and diffusion. Such a dust collecting method is one of excellent dust collecting techniques, and high efficiency can be obtained by appropriately selecting the filter material. However, if the pores of the filter material are clogged due to overload of the pressure loss, the life of the filter material is shortened and the operation cost is increased.

In other words, as the filtration process progresses, the dust layer collected on the filter medium becomes thick, so that the pressure loss of the filter medium becomes high and normal operation becomes impossible. Due to such a problem, the dust collected on the surface of the filter medium by the periodic cleaning If the dust concentration in the exhaust gas is high or the filtration speed is high during the exhaustion of the dust, the dust is not easily shaken due to the nature of the dust itself, or the dust that has been shaken is re- There is a problem that the dust collecting performance of the dust collecting apparatus is deteriorated.

In addition, if the exhaustion operation such as increasing the frequency of exhaustion or increasing the exhaustion strength is performed excessively in order to continue the operation of the dust collector while preventing the reattachment phenomenon by the exhaustion method as described above, There arises a problem that the dust collecting efficiency is lowered or the life of the filter medium itself is shortened due to wear and breakage of the filter medium itself.

KR 10-1623335 B1 KR 10-2005-0015895 A KR 10-2009-0005801 A

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems of the prior art, and it is an object of the present invention to prevent compressed air from being deteriorated in efficiency by operating compressed air to be supplied by a differential pressure between a suction port and a discharge port in a compartment, And to provide a bag filter pulsing control system of a dust collector capable of extending the life of the bag filter.

In addition, the present invention prevents dust from being exhausted instantaneously and re-adheres to the filter again when the exhausted dust is reintroduced again to deteriorate the exhaustion efficiency, and in a dust collector composed of a plurality of compartments, The present invention provides a bag filter pulsing control system of a dust collector capable of reducing the maintenance cost compared with the related art by allowing a plurality of dust collecting chambers to be selectively or sequentially driven with a set operating time and an opening / There is a purpose.

The present invention also relates to a time mode for controlling pulsing according to a set time, a differential pressure mode for controlling pulsing in accordance with a differential pressure, a complex mode for controlling pulsing according to a differential pressure across the bag filter on the basis of a set time, A separate differential pressure mode for controlling pulsing individually, and a pulsing pulsing pressure mode for controlling pulsing by checking the pulsing pressure in real time. The user can select and apply various operation modes according to the environment, The present invention has an object to provide a bag filter pulsing control system of a dust collector which can increase the volume of the bag filter.

According to an aspect of the present invention, there is provided a bag filter pulsing control system including a plurality of compartments isolated from each other, an inlet duct for supplying air containing dust to the compartments, A bag filter installed in a partition wall partitioning the space into a space and filtering the air flowing from the inflow space side to the outflow space side; an exhaust duct for discharging air to the outside of the compartment; A pressure detecting unit for detecting a pressure in the inlet duct, a pressure in the compartment, a pressure in the discharge duct, and a supply pressure of the dust-removing unit, respectively, ; And a controller for controlling the operation of the dust removing unit according to the pressure information measured by the pressure measuring unit, wherein the controller is configured to control the operation of the dust collecting unit when the pressure difference between the bag filter front- A combined mode in which the discharging unit is operated for each compartment and a mode in which the discharging unit is initially operated in the differential pressure mode and then the mode is switched to a time mode when the set switching time has elapsed, And controls the operation of the discharging unit to any one of the operation modes selected from the pulsating pressure mode in which the discharging unit is operated whenever the reference supply pressure is set.

The controller controls the dust removing unit to sequentially exhaust a plurality of bag filters installed in the compartment for each compartment so that the dust separated from the bag filter in the dust removing process can be prevented from being transferred to the bag filter The at least one bag filter adjacent to the bag filter immediately before exhaustion is skipped and the operation of the exhaust unit is controlled to exhaust the selected bag filter.

The controller controls the outlet duct so that the outlet duct communicating with the outlet space of the compartment is closed for a predetermined idle time so that the dust separated from the bag filter falls down to the lower portion of the compartment, And the operation of the installed outflow damper is controlled.

Wherein the differential pressure mode is a general differential pressure mode in which the operation of the exhaust valve is controlled so as to exhaust the bag filter of all the compartments when the pressure difference between the inlet space and the outlet space in the compartment is equal to or greater than a set reference pressure difference, And a differential pressure mode in which if the pressure difference between the inflow space and the outflow space in a compartment of the plurality of compartments is equal to or greater than a set reference pressure difference, the operation of the depressurization part is controlled so as to exhaust only the bag filter in the compartment. do.

Wherein the pulsating pressure mode sequentially exhausts the plurality of bag filters installed in the respective compartments each time the supply pressure of the discharging unit reaches the set reference supply pressure.

The bag filter pulsing control system of the dust collector according to the present invention is selectively or sequentially driven with the operating time and the opening / closing rate set in accordance with various application examples of the user, thereby performing the discharging operation, have.

In addition, the bag filter pulsing control system of the dust collector according to the present invention may include a time mode for controlling the pulsing according to the set time, a differential pressure mode for controlling the pulsing according to the differential pressure, , A separate differential pressure mode for individually controlling pulsing according to each differential pressure, and a pulsing pulsing pressure mode for controlling pulsing by checking the pulsing pressure in real time. So that the dust collecting performance and efficiency can be improved.

The bag filter pulsing control system of the dust collector according to the present invention can monitor the differential pressure between the inflow space and the inflow space in the compartments, the pressure of the bag filter, and the pulsing pressure by one system, The life of the bag filter can be expected to be shortened and the consumption of compressed air can be reduced because exhaustion is performed at the optimal exhaustion timing with the minimum compressed air.

1 is a schematic diagram showing a bag filter pulsing control system of a dust collector according to the present invention;
2 shows a part of a bag filter pulsing control system of a dust collector according to the present invention.
3 is a block diagram showing a control system of a bag filter pulsing control system of a dust collector according to the present invention.
FIG. 4 through FIG. 6 show an example of pulsing operation through a bag filter pulsing control system of a dust collector according to the present invention; FIG.

Hereinafter, a bag filter pulsing control system of a dust collector according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 to 6 show a bag filter pulsing control system of a dust collector according to the present invention. Referring to FIG. 1 to FIG. 1, a pulsing control system for a bag filter 20 according to the present invention includes a pressure detector 100, a controller 200, (300), a monitoring unit (400), and a wireless communication unit (500).

Before describing the pulsing control system of the bag filter 20 according to the present invention, the dust collector to which the bag filter pulsing control system according to the present invention is applied will be described first.

The dust collector is provided with a plurality of compartments 10 and a plurality of bag filters 20 installed in the compartments 10 to collect dust, An inflow damper for opening and closing the inflow duct, an outflow duct for discharging the air in the compartment to the outside, an outflow damper for opening and closing the outflow duct, A fan, a discharge portion for supplying high-pressure compressed air to the compartment, and a dust discharge portion for discharging the dust collected in the lower portion of the compartment to the outside.

A plurality of compartments (10) are provided and are arranged adjacent to each other. Inside each compartment 10, there is formed an inner space portion extending in the vertical direction so as to allow air to flow from the lower side to the upper side, and the inner space portion is divided into the inflow space portion 11 and the outflow space portion 12 in the up- A partition wall 13 is provided. A plurality of mounting holes are formed in the partition wall 13 so that the bag filter 20 to be described later can be inserted and mounted. The lower part of the partition wall is formed in a hopper shape so as to collect dust falling downward by the bag filter 20 and a dust-removing part, which will be described later, and a dust outlet for discharging dust is formed at the lower end.

A plurality of bag filters 20 are mounted in the compartment wall 13 in the compartment 10 to filter dust from the air moving from the inflow space 11 to the outflow space 12.

The inlet duct supplies dust containing air into the compartment 10 and includes a main inlet duct 31 and a plurality of branch inlet ducts 35 branched from the main inlet duct 31 into the compartments 10, .

The inflow damper is for opening and closing the flow path of the inflow duct and includes a main inflow damper 41 provided in the main inflow duct 31 and a branch inflow damper 45 provided in each inflow duct 35 do.

The outlet duct is for discharging the air filtered by the bag filter 20 to the outside of the compartment 10 and includes a main outlet duct 51 and a branch outlet duct 51 which branches from the main outlet duct 51 to each compartment 10, (55).

The outflow damper is for opening and closing the flow path of the outflow duct and includes a main outflow damper 61 provided in the main outflow duct 51 and a branch outflow damper 65 provided in each of the outflow ducts 55 do.

The suction fan 70 is provided on the end side of the main outlet duct 51, that is, on the end side of the main outlet duct 51 to provide a suction force for sucking air inside the compartment 10. [

The dust removing unit is for dusting out and dusting dust adhered or fixed to the bag filter 20. The dust removing unit includes a compressor 81 for compressing air at a high pressure and a fan 81 for supplying compressed air generated in the compressor 81 to the inside of the compartment 10 And a compressed air supply unit.

The compressed air supply section is branched from the other end of the main pulsing supply pipe 83 and extends into each of the compartments 10 and is connected to the compressor 80 via a main pulsing supply pipe 83, A pulsing valve 87 provided in each of the branch pulsing supply pipes 85 and supplying or blocking the compressed air generated by the compressor 81 to the respective compartments 10, A plurality of injection pipes 89 extending downward from the branch pulsing supply pipe 85 at positions corresponding to the bag filter 20 and injecting high-pressure compressed air toward the bag filter 20, And a spray valve 89a for opening and closing the flow path of the spray tube 89, respectively.

The dust discharging portion is a dust discharging pipe 91 provided at the dust discharging port under the compartment 10 for discharging the dust that has fallen to the lower portion of the compartment 10 to the outside and a dust discharging pipe 91 provided at the dust discharging pipe 91, A dust discharge damper (not shown) for opening and closing the flow path, and a storage chamber (not shown) for storing dust transferred through the dust discharge pipe 91.

Hereinafter, the pulsing control system of the bag filter 20 according to the present invention for controlling the exhaustion of the bag filter 20 installed in the dust collector will be described in detail.

The bag filter 20 pulsing control system according to the present invention includes a pressure detector 100 and a controller 200.

The pressure detecting unit 100 includes a first pressure gauge 110 installed in the main inflow duct 31 to detect the pressure in the main inflow duct 31 and a second pressure gauge 110 installed in the main inflow duct 51 to detect the pressure in the main inflow duct 51. [ A third pressure gauge 130 installed in each compartment 10 for detecting the pressure in the compartment and a main pulsing supply pipe 83 of the compressed air supply unit for detecting the pressure of the main And a fourth pressure gauge 140 for detecting the pressure of the pulsing supply pipe 83. The pressure information detected by the pressure detecting unit 100 is automatically transmitted to the controller 200 in real time.

The third pressure gauge 130 is installed in the outflow space portion above the partition wall 13 in each compartment 10 and the inflow space portion under the partition wall 13 to adjust the pressure of the outflow space portion and the inflow space portion Respectively. In this case, the third pressure gauge 130 sends two pieces of pressure information to the controller 200, which will be described later.

The controller 200 controls the operation of the main inflow damper 41, the branch inflow damper 45, the main outflow damper 61, the branch outflow damper 65 and the dust removal section, And controls the operation of the dust removing unit according to the pressure information measured by the detecting unit 110.

The controller 200 supports a time mode, a differential pressure mode, a complex mode, and a pulsating pressure mode, and when any one of the modes is selected by a user's operation, the controller 200 operates the exhausting unit in the corresponding mode.

For example, when the time mode is selected by the user's operation, the controller 200 collectively performs high-pressure compression on the bag filter 20 installed in all the compartments 10 every predetermined operating cycle through the timer The dust adhered or adhered to the bag filter 20 can be periodically removed and separated from the bag filter 20 by controlling the operation of the dust-removing section so that the air is jetted for a short time. At this time, the controller 200 controls the operation of the branch flow-out damper 65 so that the flow path of the branch flow-out duct 55 is closed, and the flow paths of all the branch pulsing supply pipe 85 and the spray pipe 89 are opened And controls the operation of the plurality of pulsing valves 87 and the injection valves 89a provided in the supply pipe 85. When the injection of the compressed air is completed, the controller 200 returns the outflow damper and the pulsing valve 87 to the original state.

On the other hand, when the differential pressure mode is selected by the user's operation, the controller 200 determines whether to perform the draining operation collectively for all the compartments 10 or the draining for each compartment 10, And a differential pressure differential mode.

For example, when the differential pressure mode is selected, the controller 200 sets the pressure difference between the inlet space portion 11 and the outlet space portion 12 of each compartment 10 to the corresponding compartment 10 By controlling the operation of the dust removing unit so that the dust removing operation can be performed for all the compartments 10 every time the pressure difference between the main inflow duct 31 and the main inflow duct 51 is equal to or greater than the set reference pressure difference The dust adhered or fixed to the bag filter 20 can be separated and separated from the bag filter 20. [

The controller 200 determines that the pressure difference between the inflow space 11 and the outflow space 12 in at least one compartment 10 of the plurality of compartments 10 is equal to or greater than a set reference pressure difference, The operation of the dust-removing section can be controlled so as to exhaust the bag filter 20. At this time, the controller 200 controls the operation of the outflow damper so that the outflow duct is closed, and controls the pulsing valve 87 and the injection valve 89a to be opened like the time mode. When the injection of compressed air is completed, the controller 200 returns the outflow damper, the pulsing valve 87, and the injection valve 89a to their original states.

Alternatively, when the differential pressure mode is selected, the controller 200 controls the pressure difference between the inlet space 11 and the outlet space 12 in any of the compartments 10 of the plurality of compartments 10, The operation of the dust-removing section is controlled so that only the bag filter 20 of the compartment 10 is selectively exhausted. At this time, the controller 200 closes only the branch flow-out damper 65 connected to the compartment 10 so that continuous filtration can be performed in the other compartment 10 other than the compartment 10, Only the valve 87 and the injection valve 89a are controlled to be opened.

In the differential pressure mode, the differential pressure between the inlet space 11 and the outlet space 12 is measured for each compartment 10, and the compartment 10, which has the differential pressure higher than the reference value, is independently discharged, The number of times of exhaustion can be reduced, and the compressed air consumption and the life of the bag filter 20 can be prolonged.

When the compound mode is selected, the controller 200 controls the dust removing unit to operate in the differential pressure mode as described above, and then switches to the time mode described above when the set switching time has elapsed to operate the dust removing unit. In the composite mode, the dust-removing unit may be operated in a differential pressure mode in a time period of high dust concentration in the air, and may be switched to a time mode in a low dust concentration period in the air to operate the dust- The start priority among the differential pressure mode or the time mode can be automatically determined according to the time zone.

The pulsing pressure mode is a mode in which the plurality of compartments are sequentially exhausted one by one in the set order and the plurality of bag filters installed in the compartments are sequentially exhausted one by one whenever the supply pressure of the exhaustion portion reaches the set reference supply pressure. The discharge sequence of the compartment can be set regularly or randomly.

When the pulsing pressure mode is selected, the controller 200 determines whether or not the supply pressure of the dust-removing portion, that is, the pressure of the compressed air generated in the compressor is equal to the set reference supply pressure, regardless of the front- The plurality of compartments are exhausted in a predetermined order by operating the exhausting part every time the exhaust valves reach the exhaust ports, and the plurality of bag filters provided for the respective compartments are sequentially exhausted one by one.

For example, when the user selects the pulsing pressure mode, the controller 200 first opens the pulsing valve 87, which opens and closes the flow path of the branch pulsing supply pipe installed in the compartment, as shown in FIG. 3, And the injection valve 89a provided in the injection pipes extending downward from the branch pulsing supply pipe toward the filter are sequentially opened to sequentially exhaust the bag filter and to close the branch flow-out damper of the branch flow-out duct connected to the compartment . At this time, when the pressure of the main pulsing supply pipe is lower than the reference supply pressure after the injection valve 89a provided in the one-side injection pipe is first opened, until the pressure of the main pulsing supply pipe reaches the reference supply pressure, When the pressure of the main pulsing supply pipe reaches a set reference supply pressure after a predetermined time has elapsed, the injection valve 89a provided in the adjacent one of the other side injection pipes is kept closed so as not to exhaust the bag filter, By repeating the process of opening the injection valve 89a provided in the side branch pipe, the bag filter is sequentially exhausted.

In the pulsing pressure mode, the supply pressure of the discharge portion is measured in real time to minimize the discharge waiting time, and all of the discharge dampers are opened for a sufficient time according to the minimization of the waiting time, It is possible to reduce the pressure loss, thereby reducing the power of the fan.

In addition, it is possible to check whether the injection valve 89a installed in each injection pipe for discharging each bag filter is malfunctioning through the pulsing pressure mode. For example, in order to exhaust the bag filter in a compartment, the controller sends a control signal to the injection valve 89a so as to open the injection valve 89a of the injection pipe located above the bag filter, If the pressure of the pulsing supply pipe, that is, the pressure measured at the fourth pressure gauge, is not less than the set reference supply pressure, the controller can determine that the injection valve 89a is malfunctioning or malfunctioning.

After the bag filter draining in a compartment is completed, the controller sends a control signal to the injection valve 89a so as to close the injection valve 89a of the injection pipe located at the upper portion of the bag filter, If the pressure of the supply pipe, that is, the pressure measured at the fourth pressure gauge does not rise, the controller can determine that the injection valve 89a is malfunctioning or malfunctioning.

Such a pulsing pressure mode also provides a function of checking whether the injection valve 89a is operated or not.

The controller 200 according to the present invention controls the dust removing unit so as to sequentially exhaust a plurality of bag filters 20 mounted in the compartments 10 so that the dust separated from the bag filter 20 The at least one bag filter 20 adjacent to the bag filter 20 that has been completely depleted immediately before the bag filter 20 immediately before the depleted bag filter 20 is removed, And may further provide a pulsing jump mode to control operation.

As an example of the pulsing jump mode, the first bag filter 21 to the seventh bag filter 27 are mounted in a row in any one of the compartments 10, as shown in Figs. 4 to 6, 21 to the seventh bag filter 27 and the branching pulsing supply pipe 85 is applied to the compartment 10 of the dust collector having the pulsing valve 87 mounted on each branch pulsing supply pipe 85, do.

When the pulsing jump mode is selected, the controller 200 activates the discharging unit in any one of the time mode, the differential pressure mode, the complex mode, and the pulsating pressure mode selected by the user, Only the pulsing valve 87 provided on the branch pulsation supply pipe 85 on the upper side of the first bag filter 21 is opened so as to exhaust only one of the bag filters (the first bag filter 21 in the present embodiment) Only the pulsing valve 87 provided on the branch pulsing supply pipe 85 on the upper side of the fourth bag filter 24 is opened so as to exhaust only one bag filter (the fourth bag filter 24 in this embodiment) Only the pulsing valve 87 installed on the branch pulsing supply pipe 85 above the seventh bag filter 27 can be opened so that only one bag filter (the seventh bag filter 27 in this embodiment) is exhausted.

That is, in the pulsing jump mode as described above, the bag filter completed before exhaustion and the bag filter located at a remote location are selected to exhaust the bag filter subsequently, so that the dust separated from the exhausted bag filter subsequently exhausted So that it is prevented from adhering to the bag filter and the filtration efficiency can be increased.

The controller 200 controls the outlet space 12 of the compartment 10 and the outlet space of the compartment 10 for a predetermined idle time so that the dust separated from the bag filter 20 can be dropped below the compartment 10, And controls the operation of the outflow damper installed in the outflow duct so that the flow path of the outflow duct provided to communicate is closed.

At this time, the controller 200 may close only the main outlet damper 61 of the main outlet duct or the branch outlet damper 65 of each branch outlet duct 55 depending on the operation mode of the outlet portion have.

The operation unit 300 is provided on one side of the controller 200 and is configured to select one of various modes provided by the controller 200.

The monitoring unit 400 displays the pressure information detected by the pressure detecting unit, the operating state of the dust removing unit, the operating state of the suction fan, the operating state of the dust discharging unit, and the operating state of the inflow damper and the outflow damper.

The wireless communication unit 500 can wirelessly transmit an event generation signal and operation information and pressure information of current components to a user terminal when a failure or malfunction of various components controlled by the controller occurs. And receives the control signal transmitted from the terminal and transmits the control signal to the controller.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. I will understand that. Accordingly, the true scope of protection of the present invention should be determined only by the technical idea of the appended claims.

10: compartment
20: Bag filter
31: Main inlet duct
35: Branch inflow duct
41: main inflow damper
51: Main outlet duct
55: Branch outlet duct
61: main outlet damper
65: Branch inflow damper
70: Suction fan
81: Compressed air supply part
83: Main pulsing supply pipe
85: branch pulsing feeder
87: Pulsing valve
89: Distributor
89a: injection valve
91: dust discharge pipe
100: pressure detector
110: first pressure gauge
120: second pressure gauge
130: Third pressure gauge
140: Fourth pressure gauge
200: controller
300:
400: Monitoring section
500:

Claims (5)

An air conditioner comprising: a plurality of compartments isolated from each other; an inlet duct for supplying air containing dust into the compartments; and a partition wall partitioning the compartments into an inlet space and an outlet space, A discharge duct for discharging air to the outside of the compartment; and a discharging unit for supplying compressed air to the compartment for discharging the bag filter, the apparatus comprising:
A pressure detector for detecting a pressure in the inlet duct, a pressure in the compartment, a pressure in the discharge duct, and a supply pressure of the discharge unit;
And a controller for controlling the operation of the dust removing unit according to the pressure information measured by the pressure measuring unit,
The controller
A differential pressure mode in which the dust removing unit is operated for every compartment or compartment every time the pressure difference between the bag filter front side and the rear side in the compartment is equal to or greater than a set reference pressure difference,
A composite mode in which the discharging unit is initially operated in the differential pressure mode and then the mode is switched to a time mode when the set switching time has elapsed to operate the discharging unit;
Wherein the control unit controls the operation of the dust removing unit to any one of the operation modes selected from among the pulsing pressure modes in which the dust removing unit is operated whenever the supply pressure of the dust removing unit reaches the set reference supply pressure.
The method according to claim 1,
The controller
The dust removing unit controls the dust removing unit so as to sequentially exhaust a plurality of bag filters installed in the compartment for each compartment so that the dust separated from the bag filter in the discharging process can be prevented from being transferred to the bag filter, Wherein the operation of the dust removing unit is controlled so as to exhaust the selected bag filter by skipping at least one or more bag filters adjacent to the bag filter that has been exhausted.
The method according to claim 1,
The controller
And an outlet damper installed in the outlet duct so as to close a flow path of the outlet duct communicated with the outlet space of the compartment for a predetermined idle time so that the dust separated from the bag filter falls down to the bottom of the compartment, And controls the operation of the dust collector.
The method according to claim 1,
The differential pressure mode
A general differential pressure mode in which the operation of the exhaust valve is controlled so as to exhaust the bag filter of all the compartments when the pressure difference between the inlet space and the outlet space in the one of the compartments is equal to or greater than a set reference pressure difference,
And a differential pressure mode in which if the pressure difference between the inflow space and the outflow space in a compartment of the plurality of compartments is equal to or greater than a set reference pressure difference, the operation of the depressurization part is controlled so as to exhaust only the bag filter in the compartment. The pulsating control device of the dust collector.
The method according to claim 1,
The pulsing pressure mode
Wherein the plurality of bag filters installed in the respective compartments are sequentially exhausted whenever the supply pressure of the dust-removing unit reaches the set reference supply pressure.

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