KR102365426B1 - Fire prevention and fire extinguishing device for dust collector - Google Patents

Abstract

An object of the present invention is to provide a fire prevention and fire extinguishing device for a dust collector that sprays a powder extinguishing agent into the dust collector and minimizes the possibility of ignition by ignitable or flammable substances that are mixed with contaminants such as dust and inhaled.
Accordingly, in the present invention, a storage tank for storing a powder extinguishing agent and having a discharge port connected to a dust collector on one side thereof; a rotary nozzle for dispersing the powder of the powder extinguishing agent by spraying compressed air supplied from the outside in the storage tank while the injection pipe having a plurality of nozzles rotates at a constant speed inside the storage tank; an impeller for stirring the powder extinguishing agent while rotating at a constant speed inside the storage tank; and a driving unit that simultaneously rotates the rotary nozzle and the impeller at a constant speed, wherein the powder of the fire extinguishing agent is pressurized through the discharge port by the suction action of the dust collector and is sprayed into the filter inside the dust collector. and a fire extinguishing system.

Description

FIRE PREVENTION AND FIRE EXTINGUISHING DEVICE FOR DUST COLLECTOR

The present invention relates to a fire prevention and fire extinguishing device for a dust collector that not only removes the fire risk factors of the dust collector in advance, but also actively extinguishes it when ignited inside the dust collector, and more particularly, a powder extinguishing agent with a filter inside the dust collector It relates to a device that prevents fires by minimizing the possibility of ignition by flammable or flammable substances that are smoothly and stably discharged and mixed with pollutants such as dust and inhaled, and also extinguish fires quickly in case of fire.

In general, dust collectors are classified into gravity dust collectors, inertial force dust collectors, centrifugal force dust collectors (Cyclone), cleaning dust collectors, filter dust collectors, acoustic dust collectors, and electric dust collectors according to the method of collecting and processing particulate matter.

Among them, the filter dust collector has characteristics such as stable particulate pollutant collection performance, long usage time, and low maintenance cost.

These filter dust collectors are largely divided into bag filter-type dust collectors and cartridge-type dust collectors. In particular, cartridge-type dust collectors generally suck in contaminants such as dust with a blower forcibly through an inlet, and then use a cartridge filter installed inside. Filtered clean air from which pollutants have been removed is discharged to the outside through the outlet, and by using an air-pulsing device, compressed air (jet stream) is sprayed back through the nozzle at regular time and intervals to the cartridge filter. It consists of a method of desorbing contaminants attached to the outer surface of the cartridge filter and collecting dust through the dust ejector at the bottom.

On the other hand, since large-scale pollutants such as harmful gases and dust are generated in workplaces such as semiconductor manufacturing plants and chemical plants, most of them are required to install pollution prevention facilities such as dust collectors and scrubbers in order to collect and remove them.

However, due to the nature of dust collectors sucking pollutants such as dust through sealed ducts or pipes, fire occurs due to ignition caused by factors such as ignitable or flammable substances that are inhaled with pollutants and electric sparks or shocks, which causes property loss as well as damage to property. There is a problem in that it leads to an explosion phenomenon during firefighting, which may lead to casualties.

In particular, the cartridge-type dust collector absorbs vibration waves and disperses the pressure when the air-pulsing device reverses spraying due to the pleats of the cartridge filter, so that contaminants such as dust between the pleats of the cartridge filter are properly separated from the surface and cannot fall. Contaminants with a low flash point, high explosiveness, adhesiveness, and moisture content are more vulnerable to fire because the phenomenon of reattachment after being stagnant occurs. there is.

In recent years, various attempts have been made to solve the risk of ignition and fire of the filter dust collector.

For example, Patent Document 1 discloses a dust collector having a structure that extinguishes a fire by automatically injecting a fire extinguishing agent according to a detection signal of a fire detection unit.

However, this has a very complicated structure, and once a fire extinguishing agent is sprayed, the filter cannot be reused and must be replaced frequently.

On the other hand, Patent Document 2 discloses a method for collecting dust and removing various odorous substances at the same time by lowering the air pressure in the inner space of the filter in the dust collector and attaching a remover mixture containing zeolite powder and slaked lime powder as main components to the outer surface of the filter. has been

However, this is a structure in which the remover mixture, which is dropped by a certain amount from the hopper of the feeder that supplies the remover mixture, through the rotary valve, is dispersed and pressurized into dust particles with the wind generated by the blower and attached to the outer surface of the filter. After a certain period of time, the remover mixture in the hopper hardens into a lump due to the hydration reaction that combines with moisture, and a smooth pellicle layer is formed on the surface, so that the supply by the blower is not performed smoothly. .

The background or prior art described herein is information possessed by the inventor or acquired in the process of deriving the present invention, and is only intended to help in understanding the technical meaning of the present invention, and prior to the filing of the present invention, the technology to which this invention belongs This does not mean that the technology is widely known in the field.

KR10-2074149 B1 (2020.01.31) JP2717469 B2 (January 14, 1997) KR20-0333314 Y1 (2003.11.05) KR20-2018-0001276 U (2018.05.04) KR20-0372901 Y1 (2005.01.04) KR10-1792336 B1 (2017.10.25) KR10-1664383 B1 (2016.10.04)

Accordingly, the present inventor has an idea to solve the technical limitations and problems of the existing dust collector, which has the disadvantage of being vulnerable to fire, while comprehensively considering the above-mentioned matters, by smoothly and stably spraying the powder extinguishing agent through the filter inside the dust collector. Fire prevention and fire extinguishing for dust collectors with a new structure that prevents fire by minimizing the possibility of ignition by sparks or ignitable or flammable substances mixed with pollutants such as dust The present invention was created as a result of continuous research with an effort to develop a device.

Therefore, the technical problem and object to be solved by the present invention is to provide a fire prevention and fire extinguishing device for a dust collector that can prevent a fire by smoothly and stably spraying a powder extinguishing agent to the filter inside the dust collector.

Here, the technical problems and objects to be solved by the present invention are not limited to the technical problems and objectives mentioned above, and other technical problems and objects not mentioned will be clearly understood by those skilled in the art from the following description.

Specific means according to an embodiment of the present invention to achieve the technical object as described above, as well as to solve the problems or technical problems of the prior art, store a powder fire extinguishing agent, and a dust collector and a dust collector on one side of the upper part a storage tank having a discharge port connected thereto; a rotary nozzle for dispersing the powder of the powder extinguishing agent by spraying compressed air supplied from the outside in the storage tank while the injection pipe having a plurality of nozzles rotates at a constant speed inside the storage tank; an impeller that mechanically impacts the powder fire extinguishing agent while rotating at a constant speed inside the storage tank; and a driving unit that simultaneously rotates the rotary nozzle and the impeller at a constant speed, wherein the powder of the extinguishing agent is pressurized through the discharge port by the suction action of the dust collector and sprayed into the filter inside the dust collector. Suggests fire prevention and fire extinguishing devices for dust collectors.

As a result, the present invention smoothly and stably sends a powder extinguishing agent to the filter inside the dust collector to minimize the possibility of ignition inside the dust collector by ignitable or flammable substances that are mixed with contaminants such as dust and inhaled to prevent fire, and also prevent fire. The effect of rapidly evolving can be achieved.

In addition, a preferred embodiment of the present invention is an electronic scale that measures the weight of the storage tank and outputs an electrical signal; a pedestal in which the electronic scale is built, and an insertion hole is formed in the upper surface to maintain a state in which the storage tank is placed on the electronic scale; And by further comprising an indicator for displaying the number so that the electric signal of the electronic scale can be visually confirmed, the amount of use and remaining amount of the powder fire extinguishing agent contained in the storage tank can be checked in real time.

In addition, in a preferred embodiment of the present invention, the rotary nozzle includes: a hollow rotating shaft rotatably installed inside the storage tank; an injection pipe fixed to the upper end of the rotation shaft, rotating about the rotation shaft, and having a plurality of nozzles fixed at regular intervals; an air compressor for supplying compressed air to the injection pipe through the hollow of the rotating shaft; a regulator for adjusting the pressure of the compressed air supplied from the air compressor; an electromagnetic valve installed in the middle of a supply pipe connecting the air compressor and the rotating shaft to open and close the flow of compressed air supplied to the injection pipe; and a rotary joint for connecting the rotary shafts rotating relative to the supply pipe to each other, and at least one of the nozzles is disposed to spray compressed air in the direction of the outlet, and the rest of the powder fire extinguishing agent is By arranging to spray compressed air evenly from the top toward the surface, the powder of the powdered extinguishing agent can be dispersed uniformly and efficiently in the storage tank, and the powder of the powdered extinguishing agent can be transported more smoothly and stably into the dust collector. can

In addition, a preferred embodiment of the present invention is that the impeller is fixed to the rotating shaft, the rotating shaft and the impeller rotate at a constant speed simultaneously by the driving unit, and the storage tank includes a lid for opening and closing an opening on its upper surface and a It includes a sight window formed on the lid to observe the state, and at least one of the nozzles is arranged to spray compressed air in the direction of the sight window, thereby preventing the powdered fire extinguishing agent powder from adhering to the sight window.

In addition, in a preferred embodiment of the present invention, the driving unit is configured to include a gear box that enables the rotation shaft of the rotary nozzle to rotate and a drive motor for rotating the gear box, thereby improving stability at the start of rotation of the rotary nozzle and The effect of damping vibration can be obtained.

According to the technical idea and embodiment (embodiment) of the present invention, which is based on a unique solution to solve the above technical problems, the powder fire extinguishing agent in the storage tank is hardened in the form of a lump due to the hydration reaction that combines with moisture and the like. It can be reliably prevented from being lost or a smooth pellicle layer is formed on its surface, and it can also maintain the optimum state in which the powder of the powder fire extinguishing agent is scattered in the storage tank.

Therefore, the powder fire extinguishing agent contained in the storage tank is smoothly and stably sprayed through the filter inside the dust collector to minimize the possibility of ignition inside the dust collector due to inflammable or flammable substances mixed with contaminants such as dust to prevent fire. In case of fire, it can be extinguished quickly.

In addition, it is possible to check the mass change such as the residual amount (storage amount) and usage amount of the powder extinguishing agent contained in the storage tank in real time with an electronic scale, as well as to easily observe the internal state through the sight window.

Here, the effects of the present invention are not limited to the above-mentioned effects, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

1 is a partial front sectional view showing a fire prevention and fire extinguishing device for a dust collector according to an embodiment of the present invention.
2 is a partial side cross-sectional view showing a fire prevention and fire extinguishing device for a dust collector according to an embodiment of the present invention.
3 is a partial side cross-sectional view showing some of the components of the fire prevention and extinguishing device for a dust collector according to an embodiment of the present invention.
4 is a perspective view showing an impeller among components of a fire prevention and fire extinguishing device for a dust collector according to an embodiment of the present invention.
5 is a partial plan cross-sectional view schematically illustrating an action range of an injection pipe among components of a fire prevention and fire extinguishing system for a dust collector according to an embodiment of the present invention.
6 is a partial plan sectional view schematically showing the working range of the impeller among the components of the fire prevention and fire extinguishing device for a dust collector according to an embodiment of the present invention.

Hereinafter, an embodiment according to the present invention will be described in more detail with reference to the accompanying drawings.

Prior to this, the terms described below are defined in consideration of the functions in the present invention, which indicate that they should be interpreted as concepts consistent with the technical spirit of the present invention and meanings commonly or commonly recognized in the art.

In addition, when it is determined that a detailed description of a known function or configuration related to the present invention may obscure the gist of the present invention, the detailed description thereof will be omitted.

The accompanying drawings show that parts are exaggerated or simplified for explanation of the configuration and operation of the technology and for convenience and clarity of understanding, and it is revealed that each component does not exactly match the actual size and shape.

In addition, in this specification, the term and/or is meant to include a combination of a plurality of related described items or any of a plurality of related described items, and when a part includes a certain component, it is a description that is specifically opposite This does not mean that other components are excluded, but other components can be further included.

That is, it means that there is a feature, number, step, operation, component, part, or a combination thereof described in this specification, and one or more other features or number, step operation component, part, or a combination thereof It is to be understood that this does not exclude the possibility of the existence or addition of those.

In addition, each step may occur in a different order from the stated order unless the context clearly indicates a specific order. That is, each step may occur in the same order as specified, may be performed substantially simultaneously, or may be performed in the reverse order.

In addition, the meaning of the terms "unit" and "unit" means a module type that performs at least one function or a unit or role for processing a certain operation of the system, which is a combination of hardware or software or hardware and software It may be implemented as a device or assembly capable of performing an independent operation or a means through such a method.

And terms such as upper, lower, upper, lower, upper, lower, upper, lower, front and rear, left and right are used for convenience to distinguish relative positions of each component. For example, the upper side in the drawing may be named or referred to as the upper side and the lower side as the lower side, the longitudinal direction may be named or referred to as the front-back direction, and the width direction may be named or referred to as the left/right direction.

1 to 4, in the fire prevention and fire extinguishing device for a dust collector according to an embodiment of the present invention, the powder extinguishing agent (P) powder is a cartridge filter inside the dust collector by the suction action of the blower installed inside the dust collector. This is to prevent fire by minimizing the possibility of ignition by ignitable or flammable substances that are mixed with contaminants such as dust and inhaled into the dust collector while being pumped to the dust collector and extinguished quickly in case of fire. It includes an injection port 20 , an impeller 30 and a driving unit 40 .

Preferably, the electronic scale 50, the pedestal 60 and the indicator 70 may be further included.

The storage tank 10 is formed as a steel cylindrical container having a certain depth to store a predetermined amount of the powder extinguishing agent (P), and a discharge port 11 connected through a dust collector and a pipe is formed on one side of the upper part. there is.

And the storage tank 10 is provided with a lid 12 for opening and closing the opening, and the central portion of the lid 12 is to observe the state inside the storage tank 10 even with the lid 12 closed. For the viewing window 13 is formed.

That is, the storage tank 10 may inject the powder extinguishing agent (P) through the opening of the upper surface.

In addition, at least three directions or four sides of the upper portion of the storage tank 10 are equipped with a clamp 15 that allows the lid 12 to firmly maintain the closed state, and the outer rim of the corresponding lid 12 . is equipped with a hook 14 that allows the clamp 15 to be selectively caught.

Here, as the clamp 15, a toggle clamp using the fixing force and locking function obtained at the dead point between the link and the pin can be employed, and the powder extinguishing agent (P) is preferably made of fine powder containing slaked lime powder as a main component.

On the other hand, a valve 16 for controlling the amount of the powder extinguishing agent (P) or blocking the flow may be installed in the middle of the pipe that is a movement path of the powder extinguishing agent (P) by connecting the discharge port 11 and the dust collector.

The rotary nozzle 20 sprays compressed air supplied from the outside in the storage tank 10 while the injection pipe 22 having a plurality of nozzles 23 rotates at a constant speed inside the storage tank 10 to extinguish the powder. It serves to spread the powder of the drug (P) and spread it evenly.

Specifically, the rotary nozzle 20 has a hollow rotating shaft 21 for supplying compressed air to the injection pipe 22 , rotatably installed in the center of the storage tank 10 .

That is, the rotation shaft 21 is made of a hollow cylindrical steel pipe having a predetermined height and an empty space therein, and is rotatably provided in a state of being vertically erected in the center of the inside of the storage tank 10 .

And the injection pipe 22 has a plurality of nozzles 23 fixed at regular intervals along its longitudinal direction, and rotates in the left and right horizontal directions around the rotating shaft 21 from the external air compressor 24 to the rotating shaft ( 21) is fixed to the upper end of the rotary shaft 21 in a 'T' shape to receive compressed air through the hollow.

That is, the injection pipe 22 is located at the upper end of the rotary shaft 21 to rotate at the top in the storage tank 10, and the nozzle ( 23) at least one of them is arranged to spray compressed air in the direction of the discharge port 11, and the rest are compressed air at various angles from above toward the surface of the powder fire extinguishing agent (P) contained in the storage tank (10). They are arranged to spray evenly.

In addition, at least any one of the nozzles 23 is to spray compressed air in the direction of the sight window 13 to prevent the powder of the fire extinguishing agent (P) from sticking to the sight window 13 of the lid 12 and not seeing the inside. is placed.

Here, it is preferable to set the injection direction and angle of the nozzles 23 so as not to overlap each other and not to cause a force and interference to resist the rotation of the rotation shaft 21 .

For example, the nozzles 23 can be set to a direction and an angle capable of rotating the rotary shaft 21 using a reaction force generated by injecting compressed air into the storage tank 10 at high speed.

In addition, in order to deliver compressed air from the air compressor 24 to the injection pipe 22 through the hollow of the rotating shaft 21, the air compressor 24 and the rotating shaft 21 are connected by a supply pipe 26 such as a flexible hose. there is.

And in the middle of the supply pipe 26, a regulator 25 for adjusting the pressure of the compressed air supplied from the air compressor 24 is provided, and the supply pipe 26 between the regulator 25 and the rotating shaft 21 has a minute An electromagnetic valve 27 for opening and closing the flow of compressed air supplied to the tube 22 is provided.

That is, the compressed air generated from the air compressor 24 can be supplied to the injection pipe 22 at a constant pressure due to the static pressure action of the regulator 25 , and the compressed air is supplied to the injection pipe 22 by the action of the electromagnetic valve 27 . can be supplied or blocked.

In addition, an air storage tank 29 is provided between the regulator 25 and the solenoid valve 27 to increase the pressure of the compressed air and to rapidly discharge the compressed air from the middle of the supply pipe 26 .

That is, the air storage tank 29 is made to temporarily store the compressed air supplied to the injection pipe 22 through the rotating shaft 21 and is built into the pedestal 60 .

And at the lower end of the rotary shaft 21, a rotary joint 28 that connects the rotary shaft 21 that rotates relatively with respect to the supply pipe 26 to each other so that the rotary shaft 21 can freely rotate without interfering with the supply pipe 26 is mounted has been

Here, the rotary joint 28 may adopt a conventional rotary joint or swivel joint structure that maintains airtightness so that fluid does not leak while allowing free and smooth rotation on the other side by a bearing or the like based on one side.

The impeller 30 rotates at a constant speed inside the storage tank 10 while stirring the powder fire extinguishing agent (P) to give a mechanical impact.

That is, the impeller 30 is positioned on the inner bottom of the storage tank 10 and is rigidly bolted or welded to the lower portion of the rotating shaft 21 so as to simultaneously rotate with the rotating shaft 21 at a constant speed by the driving unit 40 . is firmly fixed.

And as shown in FIG. 4, a plurality of vanes 31 for uniformly stirring the powder extinguishing agent P are mounted on the upper surface of the impeller 30 at regular intervals, and the rotating shaft 21 is inserted and penetrated in the center thereof. A through hole 32 is formed.

Here, at least two or more vanes 31 are arranged on both sides from the center of the rotating shaft 21, and each of them is a distance away from the rotating shaft 21 so as not to intersect each other when rotating about the rotating shaft 21, that is, By arranging with different rotation radii, the copper wires do not overlap each other and the powder fire extinguishing agent (P) can be stirred evenly.

The driving unit 40 is built into the pedestal 60 under the storage tank 10 to simultaneously rotate the rotary nozzle 20 and the impeller 30 at a constant speed.

And the driving unit 40 is a gearbox 41 that enables the rotation shaft 21 of the rotary nozzle 20 to which the injection tube 22 and the impeller 30 are fixed, and the gearbox 41. By being configured to include a driving motor 42 that generates power required to rotate, it is possible to improve stability and damp vibrations during the rotational operation of the rotary nozzle 20 .

Here, as the gearbox 41 , a structure in which the rotation of the driving motor 42 is decelerated by a combination of a worm, a worm gear, or a bevel gear, and the direction thereof is changed, and the structure is efficiently transmitted to the rotating shaft 21 may be employed.

In addition, the drive motor 42 converts electrical energy into mechanical energy to obtain rotational power, and it is easy to start (drive) and operate by signal current from a controller, etc., and it is easy to select a model suitable for the load, and noise and vibration are reduced A normal electric motor that is small and has no exhaust pollution can be employed.

For example, a servo motor that quickly stops and reverses by changing a voltage input according to a control signal of a controller to a rotation angle, or a step motor that rotates at a predetermined angle according to a pulse may be employed.

In addition to this, a geared motor including a speed reducer that reduces the rotation speed of the motor and adjusts it to output the power required for driving, or by the motor to ensure reliable operation and automatic remote operation, and to easily adjust the speed and make stopping and reversing. A hydraulic motor that generates power by applying high pressure generated by a driven hydraulic pump to the operating shaft may be employed.

The electronic scale 50 is built in the pedestal 60 to measure the weight of the storage tank 10 and output an electric signal.

And on the upper side of the electronic scale 50, a scale plate 51 on which the storage tank 10 is placed is formed.

Here, the electronic scale 50 electrically detects the displacement due to the load and adds or subtracts electromagnetic force, or a load cell type that converts the weight of the object to be measured into a voltage proportional thereto by a load cell and measures it, or A method of applying a load to an elastic vibrating body and measuring the load from a change in its natural frequency may be employed.

In addition, the electronic scale 50 may adopt a structure capable of setting the zero point in a state in which the storage tank 10 and the like are mounted.

The pedestal 60 has an insertion hole 61 through which the lower part of the storage tank 10 is inserted so as to be liftable on the upper surface in order to maintain the state in which the storage tank 10 is placed on the scale plate 51 of the electronic scale 50. is formed

In addition, a general caster 62 having a brake function is installed at the lower end of the pedestal 60 to facilitate movement.

In addition, an electromagnetic valve 27 , a rotary joint 28 , and a driving unit 40 are disposed inside the pedestal 60 .

Here, in the four corners of the lower part of the pedestal 60, the caster 62 can be replaced with a pedestal (not shown) of a height-adjustable structure that can be balanced and easily balanced so as not to be inclined or slanted to either side. may be

The indicator 70 displays the electric signal of the electronic scale 50 as a number so that it can be visually confirmed.

That is, the indicator 70 displays the weight of the powder extinguishing agent (P) contained in the storage tank 10 measured by the electronic scale 50 as a number to check the current amount or remaining amount of the powder extinguishing agent (P) in real time. can

On the other hand, the fire prevention and fire extinguishing device for a dust collector according to an embodiment of the present invention is a setting program in which the air compressor 24 of the rotary nozzle 20, the electromagnetic valve 27, and the driving motor 42 of the driving unit 40 are input in advance. A control unit (unsigned) is provided to control the overall operation, such as organic and sequential operation by the .

That is, the control unit digitally displays with sequential operation by a preset program input based on a switch opening/closing signal for power and operation control, and a detection signal received from the electronic scale 50, sensor, etc. It controls the overall operation and output.

Here, the control unit may be provided in the form of an operation panel for directly operating a switch or the like or selecting and inputting a specific command.

The main action and operating principle of the fire prevention and fire extinguishing device for a dust collector according to an embodiment of the present invention configured as described above will be described as follows.

First, the injection pipe 22 of the rotary injection port 20 rotates at a constant speed according to the operation of the driving unit 40, and at the same time, the compressed air supplied from the air compressor 24 in the storage tank 10 is transferred to the electromagnetic valve 27 ) to control the amount of spray or spray intermittently with a certain time difference.

That is, the electromagnetic valve 27 is electromagnetically opened and then the calculated amount of compressed air is sprayed, and then closed again.

At this time, as shown in FIG. 5 , at least one of the nozzles 23 of the injection pipe 22 is disposed to spray compressed air in the direction of the discharge port 11 , so that it floats in the air in the storage tank 10 . The powder of the powder extinguishing agent (P) can be discharged more smoothly toward the discharge port 11, and the remaining nozzles 23 are at various angles from the top toward the surface of the powder extinguishing agent (P) contained in the storage tank 10. Since it is arranged to evenly spray the compressed air, the injection pipe 22 can evenly distribute the compressed air supplied through the rotating shaft 21 in various directions.

That is, in a state in which the powder of the fire extinguishing agent (P) contained in the storage tank 10 is spread and dispersed uniformly, it is suspended in the air stream created by the suction action of the blower installed inside the dust collector, and the discharge port 11 ), the powder fire extinguishing agent (P) in the form of fine particles can be smoothly sprayed through the filter inside the dust collector by pumping so that it is evenly distributed.

In addition, at least one of the nozzles 23 is arranged to spray compressed air in the direction of the sight window 13, so that the powder of the fire extinguishing agent (P) is attached to the sight window 13 of the lid 12 and the inside is not visible. can prevent

In addition, the impeller 30, which is located on the inner bottom of the storage tank 10 and rotates simultaneously with the rotating shaft 21 at a constant speed by the driving unit 40, uniformly stirs every corner of the powder extinguishing agent (P).

That is, as shown in FIG. 6, when the vanes 31 of the impeller 30 rotate about the rotation shaft 21, they do not intersect each other, and the powder extinguishing agent (P) is evenly distributed from both sides around the rotation shaft 21. By stirring, it is possible to prevent the powder fire extinguishing agent (P) in the storage tank 10 from being hardened into a lump due to a hydration reaction that combines with moisture and the like.

At the same time, it is possible to prevent the formation of a smooth film layer on the surface of the powder extinguishing agent (P), thereby preventing the powder of the powder extinguishing agent (P) from floating in the air in the storage tank (10).

Therefore, the powder extinguishing agent (P) contained in the storage tank 10 is smoothly and stably sprayed through the filter inside the dust collector to minimize the possibility of ignition inside the dust collector by ignitable or flammable substances that are inhaled mixed with pollutants such as dust. In case of fire, it can be quickly extinguished.

Furthermore, since the storage tank 10 is supported by the pedestal 60 in a state mounted on the scale plate 51 of the electronic scale 50, and has a structure that can be stably raised and lowered according to the change in weight, the storage tank 10 The change in mass of the contained powdered extinguishing agent (P) can be easily measured with an electronic scale (50) and checked in real time. You can prevent this from happening.

For example, when the measured value of the electronic scale 50 does not fall within the normal range of the powder extinguishing agent (P) contained in the storage tank 10, the control unit determines that the powder extinguishing agent (P) is insufficient, 27) is closed while controlling the supply of compressed air to the injection pipe 22 to be blocked.

On the other hand, the present invention is not limited by the above-described embodiment and the accompanying drawings, and can be variously modified and applied in various ways not illustrated within the scope without departing from the technical spirit of the present invention. It is clear to those of ordinary skill in the art to which the present invention pertains that it can be widely applied by changing the component substitution and other equivalent embodiments.

Therefore, the contents related to the modification and application of the technical features of the present invention should be interpreted as being included within the technical spirit and scope of the present invention.

10: storage tank 11: outlet
12: lid 13: sight window
14: hook 15: clamp
20: rotary nozzle 21: rotary shaft
22: injection pipe 23: nozzle
24: air compressor 25: regulator
26: supply pipe 27: solenoid valve
28: rotary joint 29: air storage tank
30: Impeller 31: Vane
40: drive unit 41: gearbox
42: drive motor 50: electronic scale
51: scale plate 60: pedestal
61: insertion hole 70: indicator
P: Powder extinguishing agent

Claims (4)

A storage tank for storing the powdered fire extinguishing agent and having a discharge port connected to the dust collector on one side of the upper part;
a rotary nozzle for dispersing the powder of the powder extinguishing agent by spraying compressed air supplied from the outside in the storage tank while the injection pipe having a plurality of nozzles rotates at a constant speed inside the storage tank;
an impeller for stirring the powder extinguishing agent while rotating at a constant speed inside the storage tank; and
a driving unit that simultaneously rotates the rotary nozzle and the impeller at a constant speed;
The powder fire extinguishing agent powder is pumped through the discharge port by the suction action of the dust collector and is sprayed into the filter inside the dust collector,
The rotary nozzle is
a hollow rotating shaft rotatably installed inside the storage tank;
an injection tube fixed to the upper end of the rotation shaft, rotating about the rotation shaft, and having a plurality of nozzles fixed at regular intervals;
an air compressor for supplying compressed air to the injection pipe through the hollow of the rotating shaft;
a regulator for adjusting the pressure of the compressed air supplied from the air compressor;
an electromagnetic valve installed in the middle of a supply pipe connecting the air compressor and the rotating shaft to open and close the flow of compressed air supplied to the injection pipe; and
a rotary joint for connecting the rotation shafts rotating relative to the supply pipe to each other;
A fire protection and fire extinguishing device for dust collectors, including.
The method of claim 1,
an electronic scale measuring the weight of the storage tank and outputting an electrical signal;
a pedestal in which the electronic scale is built, and an insertion hole is formed in the upper surface to maintain the state in which the storage tank is placed on the electronic scale; and
an indicator for displaying the electric signal of the electronic scale in numbers so that the user can visually check the electric signal;
Further comprising, a fire protection and fire extinguishing device for the dust collector.
3. The method of claim 1 or 2,
At least one of the nozzles of the rotary nozzle is arranged to spray compressed air in the direction of the discharge port, and the rest are arranged to evenly spray compressed air at various angles from above toward the surface of the powder extinguishing agent, for a dust collector Fire protection and fire extinguishing system.
The method of claim 1,
The impeller is fixed to the rotating shaft, and the rotating shaft and the impeller rotate at a constant speed by the driving unit at the same time,
The storage tank includes a lid for opening and closing the opening of the upper surface and a see-through window formed on the lid to observe the state of the interior,
At least one other of the nozzles is arranged to spray compressed air in the direction of the sight window, a fire protection and fire extinguishing device for a dust collector.

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