KR20210026297A - Acustic blower for preventing clogging dust collector using small and medium facility - Google Patents

Abstract

The present invention relates to an acoustic horn for preventing clogging of a filter dust collector for a small and medium-sized facility and, more specifically, to an acoustic blower for preventing clogging of a filter dust collector for a small and medium-sized facility that can prevent dust from adhering to a filter unit of the filter dust collector by generating sound waves. The acoustic blower for preventing clogging of a filter dust collector for a small and medium-sized facility of the present invention transmits sound waves generated from a sound wave generation unit to the filter dust collector using compressed gas to prevent the soot or dust from adhering to a dust collection unit, thereby maintaining the dust collection efficiency of the filter dust collector. In addition, the acoustic blower for preventing clogging of the filter dust collector for a small and medium-sized facility of the present invention can generate a certain sound wave suitable for the size of the small and medium-sized facility in the dust collection unit by sensing an oscillation frequency of the sound wave generation unit, thereby being easy to apply to the first dust collector for a small and medium-sized facility.

Description

Acoustic blower for preventing clogging dust collector using small and medium facility}

The present invention relates to an acoustic horn for preventing clogging of a filter dust collector for small and medium-sized facilities, and more particularly, for preventing clogging of a filter dust collector for small and medium-sized facilities that can prevent dust from adhering to the filter part of the filter dust collector by generating sound waves. It is about acoustic blowers.

In general, dust collectors have been used to remove soot or dust from exhaust gases such as boilers, heating furnaces, and waste incinerators. It has been used in work places where a lot of dust is generated. In addition, in the manufacturing industry, IC process and pharmaceutical process

It is widely used for improving the quality of products by purifying air, etc.

These dust collectors are divided into mechanical, electric, dry, or wet types according to the operation method, and a mechanical type with a simple structure (e.g., gravity settling chamber, collision type dust collector, centrifugal cyclone Etc.) method can be used. These dry dust collectors were recently developed to collect dust with relatively low pressure loss even for 1㎛ particles due to technological development and structural improvement. However, the special structure and pressure loss of the equipment are required to collect ultrafine particles of 1㎛ or less. There was a disadvantage that it was expensive.

On the other hand, an electric dust collector is used at a large flow rate in which the flow rate of the processing gas is 2,000 to 3,000 m 3 /min or more, and a bag filter, which is one of the filter dust collectors, is generally used at a small and medium flow rate below that.

The filter bag house is one of the air pollution prevention devices that filter out or prevent the emission of harmful particles contained in various particulate matters or exhaust gases in the atmosphere that cause air pollution. The filtering methods of these filter dust collectors include a surface filtration method that attaches dust to the surface of a filter medium such as thin paper or fiber, and a filter cloth made of a thick layer of filter medium such as glass fiber or cotton fiber in a bag or flat shape, that is, a bag. There is an internal filtration method that collects dust in the fibrous layer of the filter. At the beginning of operation, dust is separated only by the filter medium, but over time, the dust layer that accumulates on the surface of the filter medium serves as the filter medium. As the dust layer serves as the main filtration layer as described above, the collection efficiency increases, but at the same time, it can act as a resistor that interferes with the gas flow.

These filter dust collectors usually exhibit an efficiency of 99% or more when the size of the dust is 1.0 μm or more. The principle of collecting dust in this device is due to complex actions such as collision, direct blocking, surface deposition by electrostatic force, and diffusion. This dust collection method is one of the excellent dust collection technologies, and it is possible to obtain high efficiency by properly selecting the filter material. However, if the pores of the filter material are clogged due to an overload of pressure loss, the life of the filter material is shortened and it may increase the operating cost.

Therefore, if the dust layer on the surface of the filter medium becomes too thick, the pressure loss increases, so after using it for a while, it is necessary to perform a dedusting operation to shake off the dust. For this, a reverse air flow injection method is used, which is classified into an intermittent type and a continuous type. The intermittent type is a method of dividing the dust collection chamber into 3 to 4 pieces, blocking the flow of gas and dusting off dust only where the pressure loss reaches the specified value.The continuous type is a method of continuously collecting dust without dividing the dust collection chamber or blocking the gas. It is a method to remove the dust attached to it.

There are two methods of dedusting: mechanically shaking the filter bag, vibrating, or applying high-pressure air in the forward direction, and a method of evacuating by flowing a reverse air current in a direction opposite to the main flow direction of the dust.

Meanwhile, Korean Patent Publication No. 2009-0058689 discloses a venturi coupling device for a bag filter dedusting facility. In addition, Korean Utility Model Registration No. 0301507 discloses the configuration of a protruding venturi.

The posted protruding venturi has a configuration where the coupling part is mounted at the bottom so that the main body protrudes to the upper part of the cage to increase the efficiency of use of the filter material, and can be installed only by insertion using a multi-stage coupling that satisfies a number of standards. .

In addition, Japanese Laid-Open Patent No. 1994-063327 discloses a filter backwashing device in a powder recovery device. The venturi of the posted backwashing device has a cylindrical shape that can simply constrict air.

In the above-described devices, the posted venturi has a cylindrical shape that can simply throttle the injected air, so it is not possible to increase the injection efficiency of air for exhaustion, and since the injected air has a straightness, the bag filter There is a problem in that air cannot be injected into each part of the inner circumferential surface of the.

Korean Patent Publication No. 2005-0062469 discloses a technical configuration in which the spray angle of the nozzle is configured to be 45 to 70 degrees and air is sprayed at a pressure of 2 to 6 kgf/cm 2 in order to effectively remove the bag filter dust. In this configuration, since a venturi that accelerates the cleaning air is attached inside the bag filter, the nozzle effect is partially canceled, and the working effect may be reduced. The nozzle angle is also processed at a wide angle of 45 degrees or more, so if there is no venturi, jet air may not be evenly distributed on the inner surface of the bag filter.

Korean Patent Registration Patent Publication No. 10-1311532: Dust-dusting device of bag filter unit

The present invention is to solve the above problems, and to prevent clogging of the filter dust collector for small and medium-sized facilities that can continuously maintain the filtration efficiency of the dust collector by preventing accumulation of dust in the dust collecting part of the filter dust collector for small and medium-sized facilities through sound waves. We want to provide an acoustic blower.

The acoustic blower for preventing clogging of the filter dust collector for small and medium-sized facilities of the present invention for achieving the above object has a sound wave generator that generates sound waves, and is mounted through the filter dust collector so that the dust flowing into the filter dust collector is attached to the dust collector. A horn amplifying the sound wave generated from the sound wave generating unit and transmitting the amplified sound to the dust collecting unit; A gas supply unit connected to the sound wave generator and including at least one gas supply pipe for transmitting gas for generating sound waves of the sound wave generator, and an opening/closing valve installed on one side of the gas supply pipe to open and close the gas supply pipe; And a control unit for controlling the opening and closing of the opening/closing valve and the supply of gas to the gas supply pipe.

It is mounted in the sound wave generator and further includes a vibration frequency sensing means for measuring the frequency generated by the sound wave generator, wherein the control unit receives the frequency measured by the vibration frequency sensing means, and the sound wave is constant to the sound wave generator. It is preferable that it is set to adjust the amount of gas supplied to the gas supply pipe so as to maintain the pressure of the gas supply pipe to be generated.

The horn is coupled to one side of the sound wave generator, the first extension pipe extending in a straight line in the direction of the dust collecting unit and extending an inner diameter in the extending direction; A sound wave diffusion unit coupled to the first inner diameter expansion tube and extending in a diameter toward the dust collecting unit, and a constant diameter extending from the end of the sound wave diffusion unit toward the dust collecting unit, so that the sound waves are concentrated in the dust collecting unit at a position corresponding to the extension direction It is preferable to provide a second extension tube made of a sound wave concentrating unit extending into the shape.

The acoustic blower for preventing clogging of the filter dust collector for small and medium-sized facilities of the present invention further includes a sound wave transmission region expansion means for inducing expansion of a region through which sound waves are transmitted by switching the extending direction of the second extension pipe with respect to the first extension pipe, The sound wave transmission region expansion means is mounted between the first extension tube and the second extension tube and is bent and is fixedly installed on one side of the housing of the filter dust collector in an arc shape in the vertical direction with respect to the first extension tube. An extended rail part, a sliding part seated in the rail part so as to be movable along the extending direction of the rail part and coupled to the second extension pipe, and one side so that the sound wave traveling direction of the second extension pipe can be switched up and down. And the other side is mounted to the sliding part and the housing so as to be rotatably left and right and up and down, and the length is expandable and contracted under the control of the control unit to move the sliding part in the extending direction of the rail part. Unit; The rack bar is connected to the support bar supporting the rail part and extends in an arc shape in the left and right direction and has a rack size gear formed in a longitudinal direction on one side thereof, and a drive shaft having a pinion gear engaged with the rack bar is rotated to rotate the rack bar to the left or It is preferable to include a; left and right direction switching unit including a drive motor to move to the right.

The acoustic blower for preventing clogging of the filter dust collector for small and medium-sized facilities of the present invention further includes a clogging detection means mounted on the dust collecting unit to detect the clogging of the dust collecting unit, and the control unit is directed to the side where the blockage is detected by the block detecting means. It is preferable that the second extension pipe is set to control the driving of the length-expansion member or the drive motor so that the second extension pipe is rotated.

The acoustic blower for preventing clogging of the filter dust collector for small and medium-sized facilities of the present invention can prevent the soot or dust from adhering to the dust collector by transmitting the sound waves generated from the sound wave generator to the filter dust collector using compressed gas. There is an advantage that can maintain the dust collection efficiency of.

In addition, the acoustic blower for preventing clogging of the filter dust collector for small and medium-sized facilities of the present invention can generate a certain sound wave suitable for the size of the small and medium-sized facility by detecting the frequency of the sound wave generator, so it is easy to apply it to the filter dust collector for small and medium-sized facilities. have.

1 is a side cross-sectional view of a conventional filter dust collector,
2 is a cross-sectional view of an acoustic blower for preventing clogging of a filter dust collector for small and medium-sized facilities according to a first embodiment of the present invention,
3 is a partial perspective view showing a state in which the acoustic blower of FIG. 2 is disposed toward the bag filter side of the filter dust collector for small and medium-sized facilities,
Figure 4 is a block diagram of the acoustic blower of Figure 2,
5 is a cross-sectional view of an acoustic blower for preventing clogging of a filter dust collector for small and medium-sized facilities according to a second embodiment of the present invention,
6 is a block diagram of an acoustic blower for preventing clogging of a filter dust collector for small and medium-sized facilities according to a third embodiment of the present invention.

Hereinafter, an acoustic blower for preventing clogging of a filter dust collector for small and medium-sized facilities according to the present invention will be described in more detail with reference to the accompanying drawings.

1 to 4, the acoustic blower 100 for preventing clogging of the filter dust collector for small and medium-sized facilities according to the first embodiment of the present invention transmits sound waves to the dust collector 20 mounted inside the filter dust collector 10. It is mounted through the filter dust collector 10 to prevent dust from attaching or accumulating in the dust collecting unit 20 in advance.

Before describing the acoustic blower 100 for preventing clogging of the filter dust collector for small and medium-sized facilities according to the first embodiment of the present invention, the filter dust collector 10 will be briefly described.

In general, the filter dust collector 10 is installed in the housing 12 in which the dust room 11 is formed, and is installed in the lower part of the housing to supply air containing dust to the dust room 11 and to store the dust collected by its own weight. A hopper 13 is provided.

And, on the upper side of the lower jing, the internal space of the housing is divided into a lower room 11a into which air or gas for removing dust is introduced through a hopper, and an upper room 11b for discharging the air or gas from which the dust has been removed. A partition plate 15 is provided.

The diaphragm 15 is provided with a dust collecting part 20 for filtering dust in the air or gas, and the dust collecting part 20 may be equipped with a plurality of bag filters 22 penetrating through the diaphragm 15, as shown. Alternatively, a structure of a plurality of discharge plates (not shown) and a plurality of dust collecting plates (not shown) disposed between the discharge plates to collect dust may be applied.

An acoustic blower 100 for preventing clogging of a filter dust collector for a small and medium-sized facility according to the first embodiment of the present invention is mounted through the housing 12 to prevent blocking of the horn 110 and the sound wave generator 130 Wow, it includes a gas supply unit 150, a control unit 170, and a vibration frequency detection means (180).

The horn 110 includes a first extension pipe 111 having a sound wave generating unit 130 coupled to one side thereof and extending in a straight line in the direction of the dust collecting unit 20 but extending an inner diameter in the extending direction; It is coupled to the first inner diameter expansion pipe 111 and has a second extension pipe 115 that is extended in diameter in the direction of the dust collecting unit 20 and is formed in a fallopian tube shape. The second extension pipe 115 may be integrally formed and may have separation structures 115a and 115b to facilitate mounting on the housing. When the second extension pipe 115 is mounted on the housing 12 as shown in FIG. 3, it is preferable to be mounted on the housing 12 after being wrapped in an insulating member 103 such as ceramic wool.

The gas supply unit 150 supplies a gas such as compressed air or nitrogen required for generating sound waves from the sound wave generator 130, and includes a gas supply pipe 151, a main opening/closing valve 156, and first and second gas. On/off valves 157 and 158, a gas filter 161, a regulator 163, a manual shut-off valve 165, and an air compressor (not shown) are provided.

The gas supply pipe 151 is connected to a plurality of nozzle units 146 and 147 mounted on the sound wave generator 130 to be described later, and first and second nozzles each having first or second opening and closing valves 157 and 158 mounted on one side thereof. It includes a main gas supply pipe 154 which is connected to the auxiliary connection pipes 52 and 53 and the first and second nozzle part connection pipes 152 and 153 and extends to an air compressor supplying gas.

The main gas supply pipe 154 has a conduit for transferring the gas transmitted from the air compressor to the first and second nozzle connecting pipes 152 and 153 inside.

The main opening/closing valve 156 is installed on one side of the main gas supply pipe 154 to open and close the pipe of the main gas supply pipe 154 under the control of the control unit 170, and a solenoid valve capable of electronic control is provided. Apply. In addition, the main gas supply pipe 154 has a regulator 163 that adjusts to supply gas at a constant pressure to the first or second nozzle parts 146 and 147, and a gas filter 161 that filters foreign substances in the gas. Is installed. In addition, it is preferable that the main gas supply pipe 154 is provided with a manual shut-off valve 165 capable of manually opening and closing the conduit of the main gas supply pipe when the opening and closing operation of the main opening and closing valve 156 is impossible.

The sound wave generator 130 generates a sound wave by vibrating a diaphragm (not shown) mounted on the inner circumference by the pushing force of the gas supplied from the gas supply unit 150. The sound wave generating unit 130 is not specifically shown, but a plurality of nozzle units 46 and 47 supplying gas are mounted to be spaced apart in the circumferential direction, and a sound wave generating body 133 having one side coupled to the horn 10 Wow, a circular plate-shaped diaphragm (not shown) that vibrates by the pressure of gas supplied to the inside of the sound wave generating body to induce sound wave generation, and a cover plate 144 that is combined with the sound wave generating body 133 to cover the diaphragm. ). The sound wave generating body 133 is formed in a cylindrical shape, and a hollow (not shown) is formed at the center side so that the sound wave generated by the vibration of the diaphragm can proceed to the horn 10.

Unlike shown, the acoustic blower for preventing clogging of the filter dust collector for small and medium-sized facilities according to the present invention has one nozzle part formed in the sound wave generator 130, and the gas supply pipe 151 is composed of only the main gas supply pipe 154. , A structure in which the main gas supply pipe 154 is directly connected to the nozzle unit may be applied.

On the other hand, the control unit 170 is a main opening and closing valve 156, first and second opening and closing valves 157 and 158, a regulator 163, and an air compressor (not shown) to control the gas supply to the sound wave generator 130. ). In addition, the control unit 170 is connected to the main open/close valve 156, the regulator 163 and a power supply unit (not shown) that supplies power for the operation of the air compressor, and a switch (not shown) for power supply operation. Includes. The control unit 170 is preferably installed on the outside of the housing 12 of the filter dust collector to facilitate the user's operation.

The control unit 170 controls the main opening/closing valve 156 to open and close the conduit of the main gas supply pipe 154, and the gas supplied through the main gas supply pipe 54 is supplied to the first nozzle connecting pipe 152 or the second By controlling the first and second opening/closing valves 157 and 158 so as to be selectively supplied to the nozzle part connection pipe 154, a position at which gas is supplied to the sound wave generator 30 may be controlled.

The frequency detection means 180 measures the frequency generated by the sound wave generator and transmits the measured value to the control unit 170.

The vibration frequency detecting means 180 is not limited to the one presented, but the piezoelectric sensor (not shown) mounted on the sound wave generating body 133 of the sound wave generating unit 130 and the voltage cycle appearing in the piezoelectric sensor (not shown) are sound waves. An oscilloscope (not shown) that is mounted on the generator 130 and indicates the frequency of the diaphragm for generating vibration may be provided.

The control unit 170 receives the frequency value measured by the vibration frequency detection means and compares it with the set frequency, and adjusts the amount of gas supplied to the gas supply pipe 151 so that the sound wave is constantly generated in the sound wave generator 130. It is set to maintain the pressure in the supply pipe. That is, when a value lower than the set frequency is transmitted, the control unit 170 adjusts the air supply pressure of the air compressor to increase the pressure of the gas supply pipe, and when a value higher than the set frequency is transmitted, the control unit 170 adjusts the air supply pressure of the air compressor. The frequency set in the generator 130 may be controlled to be generated.

Considering the acoustic blower 100 according to the present invention having a size of 700mm to 1500mm to be mounted on a small and medium-sized filter dust collector, the control unit 170 supplies gas to the sound wave generator 130 so that a sound wave of 170hz can be generated. It is preferred that the pressure is set to regulate.

The acoustic blower for preventing clogging of the filter dust collector for small and medium-sized facilities according to the first embodiment of the present invention transmits the sound waves generated by the sound wave generator 130 to the filter dust collector 10 using compressed gas to prevent soot or dust. Since it can be prevented from being attached to the dust collecting unit 20, there is an advantage of maintaining the dust collection efficiency of the filter dust collector 10.

In addition, the acoustic blower for preventing clogging of the filter dust collector for small and medium-sized facilities according to the first embodiment of the present invention detects the frequency of the sound wave generator 130 to generate a certain sound wave suitable for the size of small and medium-sized facilities in the dust collection unit. There is an advantage that it is easy to apply to the filter dust collector 10 for use.

Meanwhile, FIG. 5 shows an acoustic blower 200 for preventing clogging of a filter dust collector for small and medium-sized facilities according to a second embodiment of the present invention. Components having the same function as in the drawings shown above are denoted by the same reference numerals.

The acoustic blower 200 for preventing clogging of the filter dust collector for small and medium-sized facilities according to the second embodiment of the present invention has a different structure of the horn 210, and the second extension pipe 215 is vertically or left and right with respect to the first extension pipe. It is the same as the structure of the acoustic blower according to the first embodiment of the present invention, except that a sound wave transmission region expanding means 300 capable of changing the direction of extension is further provided.

The horn 210 includes a first extension pipe 111 extending from the sound wave generator toward the dust collecting part 20, a second extension pipe 215 facing the dust collecting part 20, a first extension pipe 111 and a second extension pipe. A flexible pipe 212 mounted between 215 and a corrugated pipe 213 covering the flexible pipe 212 are provided.

The second extension pipe 215 includes a sound wave diffusion unit 216 whose inner diameter increases toward the dust collecting unit 20, and a dust collecting unit at a location corresponding to the direction in which the sound wave extends from the end of the sound wave diffusion unit 216. It is provided with a sound wave concentrating portion 217 extending in a predetermined diameter so as to be concentrated on the 20.

The flexible pipe 212 is inserted into an insertion groove 111b having one side inserted in the circumferential direction at the end of the first extension pipe 111 and the other side has a tube shape extending in a direction in contact with the second extension pipe 215. The flexible pipe 212 is formed to be bent and expandable according to the direction change of the second extension pipe 215, and is formed of a flexible material such as rubber.

The sound wave transmission region expansion means 300 induces expansion of a region through which sound waves are transmitted by switching the extending direction of the second extension pipe 215 with respect to the first extension pipe 11.

The sound wave transmission region expansion means 300 includes a flexible pipe 212, a vertical direction switching unit 310, and a left and right direction switching unit 360.

The vertical direction conversion unit 310 is fixedly installed on one side wall of the housing 12 of the filter dust collector 10 and extends in an arc shape in the vertical direction with respect to the first extension pipe 111, and a rail part 311 and a rail part. The sound waves of the sliding part 320 and the second extension pipe 215 are mounted on the rail part 311 so as to be movable along the extension direction of 311 and are coupled by the second extension pipe 215 and the bracket 315 Both sides are rotatably mounted so that the direction can be changed up and down, and length extension and extension members 330 are provided to move the sliding part in the extending direction of the rail part by the control of the control unit.

The rail part 311 has a dovetail groove 312 inserted in the longitudinal direction on one side where the sliding part 320 contacts.

The sliding part 320 is not shown, but a dovetail protrusion (not shown) accommodated in the dovetail groove 312 of the rail part 311 is formed, and a bracket 315 surrounding the second extension pipe 215 is coupled. do.

The length extension member 330 is a general hydraulic cylinder that can be stretched in length according to the inflow and outflow directions under the control of the controller 170, and the sliding part 320 so that the sound wave traveling direction of the second extension pipe 215 can be changed. ) Is connected to, when extending the length, pushes up the sliding unit 320, and when extending and contracting the length, the sliding unit 320 is pulled down.

The vertical direction change unit 310 includes a fluid storage tank 340 in which a fluid is stored, first and second fluid supply pipes 341 and 342 through which fluid is introduced and discharged, and a control unit for the length expansion and contraction operation of the length expansion and contraction member 330. The first and second fluid supply pipe opening and closing valves 345 and 347 connected to 170 and opening and closing the first and second fluid supply pipes 341 and 342, the first and second pumping fluids passing through the first and second fluid supply pipes. Equipped with two pumps (348, 349).

The moving direction of the second inner diameter expansion tube according to the length expansion and contraction of the length expansion member 330 is as follows. In order to extend the length of the length extension member 330, when a fluid is supplied to one side of the cylinder part 331 through the first fluid supply pipe 344, one side of the rod part 332 is moved away from the cylinder part 331. As it advances, the rod part 332 pushes the sliding part 220 and the second extension pipe 215 is rotated upward. In order to reduce the length of the length extension member 330, when fluid is supplied to the other side of the cylinder part 331 through the second fluid supply pipe 346, one side of the rod part 332 is adjacent to the cylinder part 331. While being accommodated, the rod part 332 pulls the sliding part 220 and the second extension pipe 215 is rotated downward.

Referring to FIG. 5, the end of the rod part 332 is mounted to be rotatable only up and down, but a structure capable of rotating up and down and left and right like the end of the cylinder part 331 may be applied.

In the left and right direction switching unit 360, a first support bar 316 supporting the upper portion of the rail part 311 is connected to the center side and extends in an arc shape in the left and right direction, and a rack size 362 in the longitudinal direction at the upper side portion. A drive motor 365 for moving the rack bar 361 to the left or right by rotating the drive shaft 366 on which the rack bar 361 is formed and the pinion gear 367 engaged with the rack size gear 362 is mounted. ), and a second support bar 317 supporting the lower portion of the rail part 311 is connected to the center side, and an auxiliary moving bar 370 extending in an arc shape corresponding to the rack bar 362 in the left and right directions, A first seating groove 374 in which the lower portion of the rack bar 361 is seated is formed, and a first moving guide frame 373 that extends in the longitudinal direction of the rack bar 361 to support the movement of the rack bar 362 and , A second seating groove 376 in which the lower portion of the auxiliary moving bar 370 is seated is formed, and a second moving guide frame that extends in the longitudinal direction of the auxiliary moving bar 370 to support the movement of the auxiliary moving bar 370 It has 375.

The lower surface of the rack bar 361 and the lower surface of the auxiliary moving bar 370 are in contact with the first moving guide frame 373 and the second moving guide frame 375 and rolled in contact with each other to facilitate horizontal movement. ) Are installed respectively.

The driving motor 365 is fixedly mounted on one side wall of the housing 12, and a bidirectional motor is applied to move the second extension pipe 215 left and right.

The driving direction of the drive shaft 366 of the drive motor 365 and the extension and contraction of the length extension member are adjusted by a user's manipulation through an operation button (not shown) separately provided in the control unit 170, so that the extension of the second extension pipe is manually adjusted. The extension direction can be rotated, or the control unit 170 controls the rotation direction of the drive shaft 366 of the drive motor 365 and the extension and contraction of the length extension member 330 so that the second extension pipe 215 is vertically or It may be set to automatically rotate left and right.

On the other hand, as a third embodiment of the present invention, an acoustic blower for preventing clogging of a filter dust collector for small and medium-sized facilities is mounted on the dust collecting unit 20 composed of a plurality of bag filters 22 to detect the blockage of the dust collecting unit 20. Can be provided with more means

Referring to FIG. 6, the occlusion detection means 400 includes a plurality of first pressure sensors 401 respectively mounted in the bag filter 22 and a second pressure sensor 401 mounted on the lower room 11a side of the housing 12. A pressure sensing sensor 402 and a third pressure sensing sensor 403 mounted on the upper room 11b side of the housing 12 are provided.

The first to third pressure sensors 401, 402, and 403 are connected to the control unit 170 and transmit the sensed pressures to the control unit 170, respectively.

The control unit 170 may be provided with a signal processing device (not shown) for numerically processing the magnitude of the pressure transmitted from the first to third pressure sensors 401, 402, and 403.

The control unit 170 stores the initial static pressure measurement values in the bag filter 22, the lower room and the upper room, and compares the measured values transmitted by the first to third pressure sensors 401, 402, and 403 in real time, It detects the location.

The first to third pressure sensors 401, 402, and 403 are not limited as long as they can sense the spatial pressure at each measurement location, and as an example, they are manufactured through a MEMS (Micro Electro Mechanical System) method and are bent according to the degree of bending by pressure. A silicon ceramic layer (not shown) that senses the amount of pressure may be applied.

The control unit 170 controls the direction of rotation of the longitudinal extension member 330 or the drive shaft 366 of the driving motor 365 so that the second extension pipe 215 is rotated toward the side where the blockage is detected.

As a third embodiment of the present invention, in the acoustic blower for preventing clogging of a filter dust collector for small and medium-sized facilities, the second extension pipe 215 is rotated so that sound waves can be intensively transmitted to the blocked bag filter side of the plurality of bag filters 22. Thus, there is an advantage in that the efficiency of preventing clogging of the dust collecting part can be improved.

In the above, the acoustic blower for preventing clogging of a filter dust collector for small and medium-sized facilities according to the present invention has been described with reference to an embodiment shown in the drawings, but this is only exemplary, and those of ordinary skill in the art have various modifications therefrom. And it will be appreciated that equivalent embodiments are possible. Therefore, the true scope of protection of the present invention should be defined only by the appended claims.

10: filter dust collector 12: housing
20: dust collecting unit 15: diaphragm
100,200: Acoustic blower for preventing clogging of filter dust collector for small and medium-sized facilities
110,210: Horn 111: The 1st Extension Hall
115,215: second extension hall 130: sound wave generator
150: gas supply unit 170: control unit
180: vibration detection means 300: sound wave transmission region expansion means
310: vertical direction switching unit 360: left and right direction switching unit
361: rack bar 365: drive motor
373: first moving guide frame 375: second moving guide frame
400: block detection means 401: first pressure detection sensor
402: second pressure sensing sensor 403: third pressure sensing sensor

Claims (5)

A sound wave generator that generates sound waves,
A horn mounted through the filter dust collector to amplify the sound wave generated from the sound wave generator and transmit it to the dust collector so as to prevent dust flowing into the filter dust collector from adhering to the dust collector;
A gas supply unit connected to the sound wave generating unit and including at least one gas supply pipe for transmitting gas for generating sound waves of the sound wave generating unit, and an opening/closing valve installed at one side of the gas supply pipe to open and close the gas supply pipe;
And a control unit for controlling the opening and closing of the opening/closing valve and the supply of gas to the gas supply pipe. The method of claim 1,
It is mounted in the sound wave generating unit further comprising a vibration frequency detecting means for measuring the frequency generated by the sound wave generating unit,
The control unit
Closure of a filter dust collector, characterized in that the pressure of the gas supply pipe is maintained by receiving the frequency measured by the vibration frequency detecting means and adjusting the amount of gas supplied to the gas supply pipe so that sound waves are constantly generated in the sound wave generator. Acoustic blower for prevention. The method of claim 1, wherein the horn
A first extension pipe coupled to one side of the sound wave generator and extending in a straight line toward the dust collecting unit and extending an inner diameter in the extending direction;
A sound wave diffusion unit coupled with the first inner diameter expansion tube and extending in a diameter toward the dust collection unit, and a constant diameter extending from the end of the sound wave diffusion unit toward the dust collection unit, so that the sound waves are concentrated in the dust collection unit at a position corresponding to the extension direction Acoustic blower for preventing clogging of a filter dust collector, characterized in that it has a second extension tube made of a sound wave concentrator extended by The method of claim 3,
Further comprising a sound wave transmission region expansion means for inducing expansion of a region through which sound waves are transmitted by switching an extension direction of the second extension pipe with respect to the first extension pipe,
The sound wave transmission region expansion means
A flexible pipe mounted between the first extension pipe and the second extension pipe and capable of bending,
A rail part fixedly installed on one side of the housing of the filter dust collector and extending in an arc shape with respect to the first extension pipe, and the second extension pipe mounted on the rail to be movable along the extension direction of the rail part. One side and the other side are mounted to the sliding unit and the housing so that the sound wave traveling direction of the second extension pipe can be switched vertically, and the sliding unit coupled with the second extension pipe is mounted to be movable left and right and up and down, respectively, and the length is extended and contracted by the control of the control unit. A vertical direction changing unit including a length-extensible member for moving the sliding part in the extending direction of the rail part;
The rack bar is connected to the support bar that supports the rail part and extends in an arc shape in the left and right direction and has a rack size gear formed in a longitudinal direction on one side thereof, and a drive shaft with a pinion gear engaged with the rack bar is rotated to rotate the rack bar to the left or Acoustic blower for preventing clogging of a filter dust collector, comprising: a left-right direction switching unit including a driving motor to move to the right The method of claim 4,
It is mounted on the dust collecting unit further comprising a blockage detecting means for detecting the blockage of the dust collecting unit,
The control unit
An acoustic blower for preventing clogging of a filter dust collector, characterized in that for controlling the driving of the length-expansion member or the drive motor so that the second extension pipe is rotated toward the side where the blockage is detected by the blockage detecting means.

Images