JP2007078243A - Industrial dust collector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an industrial dust collector capable of efficiently collecting dust as well as automatically supplying the collected dust to a desired supplying part in an electronic furnace in a case where an auxiliary raw material used as a reducing agent in a factory of a steel manufacturer is dispersed in the factory as dust and the dust has accumulated everywhere in the factory, and which has greatly improved working efficiency and safety to the human body. <P>SOLUTION: The industrial dust collector is equipped with a dust collecting tank with its inside pressure is maintained to be negative by a suction means, a dust collecting nozzle for collecting dust through a suction hose connected to the dust collecting tank, and a blowing tank arranged in a state of being communicated with a lower part of the dust collecting tank, for supplying the dust collected in the dust collecting tank to the supply part by air pressure. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an industrial dust collector that collects dust generated in a factory such as a steel mill, and more particularly to an industrial collector that can effectively and easily supply the collected dust to other supplied parts. It relates to a dust device.

JP 2004-361003 A

  Conventionally, in a factory such as the above steel mill, the recovered scrap is melted in an electric furnace, and the electric furnace contains carbon (C), calcium oxide (CaO), magnesium (Mg), etc. A steel material having desired characteristics is obtained by adding an agent as an auxiliary material. At that time, the auxiliary materials containing carbon (C), calcium oxide (CaO), magnesium (Mg) and the like used as the reducing agent are carried into a factory such as a steel mill in a packaged state, for example, In a state of being taken out of the bag, it is accumulated in a predetermined accumulating portion, and is appropriately transported and supplied into an electric furnace by a small crane or the like.

  At that time, the auxiliary raw material containing carbon (C), calcium oxide (CaO), magnesium (Mg), etc. used as the reducing agent is in a fine dust state, so when it is taken out from the bag, it is scattered around. Or easily rise as dust, and easily accumulate as dust everywhere in factories such as steelworks.

  Therefore, in factories such as the above-mentioned steelworks, in order to collect the auxiliary materials that are scattered around the predetermined accumulation part or accumulated as dust everywhere in the factories such as steelworks, and supply it to the electric furnace Industrial dust collectors are used.

  As the industrial dust collector, although the dust collection target is different, a dust collector at the time of scrap charging in an electric path for steelmaking disclosed in JP 2004-361003 A has already been proposed. Has been.

  As such an industrial dust collector, a suction hose is connected to a dust collecting hopper sucked to a negative pressure by a suction device, and the dust collecting nozzle attached to the tip of the suction hose collects in the factory. What is configured to collect dust as an auxiliary material scattered and deposited around the part or throughout the factory is used. The dust collected by the industrial dust collector is taken out from the dust collecting hopper and packed in a bag. The dust packed in the bag is collected in a stacking unit in the factory, and the dust is collected by a small crane or the like. It is used as a reducing agent by transporting to a furnace and supplying the collected dust into an electric furnace.

  However, since the conventional industrial dust collector has only a function of collecting dust in a factory or the like, in order to reuse the collected dust in an electric furnace or the like, it is necessary to pack it once. Yes, the dust packed in the bag needs to be once accumulated in the accumulation section in the factory and then supplied to the electric furnace. For this reason, the above-mentioned conventional industrial dust device recycles the collected dust, such as bagging, collecting the packed dust in the stacking unit, and further collecting the dust collected in the stacking unit. In other words, a large number of processes are required, such as an operation of supplying the battery again, and the workability is poor. Further, in the above-mentioned conventional industrial dust collector, when dust collected by the industrial dust collector is once packed in a bag, and the dust packed in the bag is collected in the collecting portion, it is also scattered around. In addition, it has a problem that it easily rises as dust, easily accumulates as dust everywhere in a factory such as a steel mill, and the recycling efficiency of the collected reducing agent is poor.

  Therefore, in order to solve such problems, the dust collected by the industrial dust collector is not packed in a bag, but is put into a blowing device that sends the dust to an electric furnace by air pressure. A configuration in which dust is conveyed to an electric furnace by air pressure has been proposed and has already been implemented.

  However, the conventional technique has the following problems. That is, in the case of the above-mentioned conventional industrial dust collector, it is necessary to put dust collected by the industrial dust collector into the blowing device, and the dust is composed of fine particles and the like. It was easy to scatter, and even when this dust was put into the blowing device, it had to be relied on manually, and there was a problem that workability was poor.

  In addition, in the case of the above-mentioned conventional industrial dust collector, it is necessary to put the dust collected by the industrial dust collector into the blowing device, and the dust is composed of fine particles etc. There is also a problem that an operator who easily scatters and puts the dust into the blowing device easily sucks the dust and needs to take sufficient dust-proof measures.

  Accordingly, the present invention has been made to solve the above-described problems of the prior art, and the object of the present invention is to use an auxiliary material used as a reducing agent or the like in a factory such as a steel mill. As a matter of course, this dust can be collected efficiently when it is scattered in the factory or deposited everywhere in the factory. It is an object of the present invention to provide an industrial dust device which can be automatically supplied to the vehicle and which has greatly improved workability and safety to the human body.

In order to solve the above problems, the invention described in claim 1 is a dust collection tank whose inside is held at a negative pressure by a suction means;
A dust collecting nozzle for collecting dust through a suction hose connected to the dust collecting tank;
An industrial tank characterized in that it is disposed in communication with the lower part of the dust collection tank, and has a blowing tank for supplying dust collected inside the dust collection tank to the supplied part by air pressure. It is a dust collector.

  According to a second aspect of the present invention, the communicating part between the dust collecting tank and the blowing tank is provided with opening / closing means for opening and closing the communicating part, and pressurized air is introduced into the blowing tank. The industrial dust collector according to claim 1, further comprising a pressurized air supply means for supplying.

  Furthermore, in the invention described in claim 3, a porous plate-like member that prevents passage of dust and allows air to pass is disposed at the bottom of the blowing tank, and the pressurized air supply The industrial dust collector according to claim 2, wherein the means supplies pressurized air from below the porous plate-like member.

  Moreover, the invention described in claim 4 is characterized in that the dust collecting tank has a thin lower end, and the thin lower end communicates with the blowing tank. The industrial dust collector according to any one of 1 to 3.

  Further, the invention described in claim 5 is to collect air in the dust collecting tank by sending air to at least one side of the lower end of the thinly formed dust collecting tank. The industrial dust collector according to any one of claims 1 to 4, further comprising an air flow forming portion that forms an air flow that promotes the falling of the generated dust.

  The invention described in claim 6 is characterized in that the industrial dust collector is configured to be freely movable in a building such as a factory by being lifted by a crane. The industrial dust collector according to any one of the above.

  Further, in the invention described in claim 7, the suction hose is previously piped at a predetermined location in a building such as a factory, and opens and closes an on-off valve provided at the predetermined location of the suction hose. 7. The industrial dust collector according to claim 1, wherein the dust collector can automatically collect dust from a predetermined location in a building such as a factory.

  The invention described in claim 8 is characterized in that the dust collecting nozzle includes a magnetic force generating means for adsorbing a magnetic material in the vicinity of the suction opening. The industrial dust collector according to any one of the above.

  Furthermore, the invention described in claim 9 is characterized in that the dust collection nozzle has a pressurized air injection port for injecting pressurized air in the vicinity of the suction opening. The industrial dust collector according to any one of 1 to 8.

  According to the present invention, when a secondary material used as a reducing agent in a factory such as a steel mill is scattered as dust in the factory or accumulated everywhere in the factory, the dust is efficiently used. Of course, dust can be collected well, and the collected dust can be automatically supplied to the desired supply part such as an electric furnace, greatly improving workability and safety to the human body. An industrial dust device can be provided.

  Embodiments of the present invention will be described below with reference to the drawings.

Embodiment 1
1 to 3 are configuration diagrams respectively showing an industrial dust collecting apparatus according to Embodiment 1 of the present invention.

  As shown in FIGS. 1 to 3, the industrial dust collector 1 includes a frame body 2 formed as a vertically long rectangular frame, and the frame body 2 is about 2/3 below. And a top frame 4 occupying about 1/3 of the upper part. As shown in FIGS. 4 to 6, the stand frame 3 includes four column frames 5, a beam frame 6 stretched in the horizontal direction that connects the four column frames 5 to each other, and a column frame 5. And a reinforcing frame 7 that obliquely connects the beam frame 6 to each other. In addition, a disk-shaped base plate 8 is fixed to the lower ends of the four column frames 5 by welding or the like.

  The top frame 4 is composed of four support frames 9 and a beam frame 10 stretched horizontally on the upper ends of the four support frames 9. A substantially triangular upper flange 11 is fixed to the upper end portion of the, and a lifting plate 13 for lifting with a crane (not shown) via a wire 12 is fixed to the upper flange 11 by welding or the like. .

  Further, in the industrial dust collector 1, as shown in FIGS. 1 to 3, a dust collecting hopper 15 as a dust collecting tank is disposed at the upper part of the stand frame 3, and at the lower part thereof. The blowing tank 16 of the blowing means is arranged. The dust collecting hopper 15 has an upper part 17 formed in a rectangular parallelepiped shape having a plane square, and a lower part 18 formed in a substantially quadrangular pyramid shape with a narrowed lower end part. Note that the height of the upper portion 17 of the dust collection hopper 15 is set as appropriate in order to satisfy the volume required for the dust collection hopper 15.

As shown in FIG. 7, the lower portion 18 of the dust collection hopper 15 is formed symmetrically so that the front shapes of the side walls 19 and 20 located on the left and right sides thereof have an opening angle of about 70 degrees. The both side walls 21 and 22 positioned in front and rear are formed so that the inclination angle of the front side surface 21 is 44 degrees and the inclination angle of the rear side surface 22 is 24 degrees and a steep slope. The inside of the dust collection hopper 15 is formed in an airtight manner, and can be kept at a negative pressure by sucking the air inside by a suction means, as will be described later.

Further, as shown in FIG. 1, the industrial dust device 1 is provided with a suction device 23 as a suction means for making the inside of the dust collection hopper 15 have a negative pressure, as shown in FIG. 1. For example, the suction device 23 is disposed at a position corresponding to the top frame 4. The suction device 23 includes a suction pump 24 including a vacuum pump and a drive motor 25 that rotationally drives the suction pump 24. The suction pump 24 is, for example, one having a suction air volume of 4.2 m ³ / min and a suction pressure of −49 kpa.

  As shown in FIG. 2, the suction port 26 of the suction pump 24 is connected to a filter 28 via a suction pipe 27, and the filter 28 is collected via a backwash electromagnetic valve 29 and an air tank 30. It is connected to the inside of the dust hopper 15. Further, the discharge port 31 of the suction pump 24 is configured to exhaust outside via a silencer 32 as shown in FIGS.

  Further, as shown in FIG. 8, the dust collection hopper 15 is connected to, for example, a suction port 34 formed in the ceiling wall 33 of the dust collection hopper 15 through a long suction hose 35. A dust collecting nozzle 36 is connected. The dust collection nozzle 36 has a suction opening 37 at the tip that is widely tapered.

  Further, as shown in FIGS. 1, 3, and 7, the blowing tank 41 of the blowing device 16 is connected to the inside of the dust collecting hopper 15 through the communication portion 40 at the lower end of the dust collecting hopper 15. And in communication with each other via a communication port 42. Further, as shown in FIG. 9, a disk-shaped valve plate 43 for opening and closing the communication port 42 is disposed at the communication port 42 so as to be opened and closed. As shown in FIG. 1, the valve plate 43 is opened and closed by a discharge valve 44 attached to the blowing tank 41.

  As shown in FIG. 7, the blowing tank 41 has an upper portion 45 formed in a cylindrical shape and a lower portion 46 formed in a substantially conical shape downward. A porous plate 47 made of sintered metal, punching metal or the like is provided in the vicinity of the bottom in the blowing tank 41, and pressurized air is supplied to the lower portion of the porous plate 47 from a compressor (not shown). A pipe 48 (see FIG. 1) for supplying pressurized air is connected. In addition, the lower part 46 of the blowing tank 41 is provided with an outside air introduction port 49 for introducing external air into the blowing tank 41 when the inside of the blowing tank 41 is washed at the bottom thereof. The outside air introduction port 49 is normally closed by an opening / closing valve 50 as shown in FIG. In addition, as the compressor, for example, a compressor arranged in advance in a factory is connected and used via a hose. However, the compressor may be configured to be mounted on the industrial dust device 1.

  Further, as shown in FIG. 1, a level meter 51a for detecting the upper limit level is attached to the upper portion 45 of the blowing tank 41, and a level meter 51b for detecting the lower limit level is attached to the lower portion 46 thereof. The height of the dust 100 in the blowing tank 41 can be measured. Moreover, the lower part 46 of this blowing tank 41 has the blowing port 52 which supplies the dust accommodated in the blowing tank 41 to to-be-supplied parts, such as an electric furnace which is not shown in figure, on the side surface by air pressure. The blowing port 52 is configured to be opened and closed by a discharge valve 53. In addition, the part 52a located in the blowing tank 41 of the said blowing port 52 is arrange | positioned so that the upper part of the perforated plate 47 may be opposed, and the dust 100 is reliably blown in with the pressurized air which passes the said perforated plate 47. It is possible to blow into the mouth 52.

  In FIGS. 1 and 3, reference numeral 55 denotes an electric control / operation panel, and 56 denotes a valve for a piping system 2 that drives a desired valve or the like to open and close with air pressure.

  In the above configuration, in the case of the industrial dust device according to this embodiment, the auxiliary material used as a reducing agent or the like in a factory such as a steel mill is as dust in the factory as follows. When the dust is scattered or accumulated everywhere in the factory, this dust can be collected efficiently, and the collected dust is automatically applied to the desired supply part such as an electric furnace. Thus, the workability and the safety to the human body can be greatly improved.

  In other words, in the case of the industrial dust device 1 according to this embodiment, as shown in FIG. 1, the operator operates the electric control / operation panel 55 to operate the suction pump 24, and as shown in FIG. As described above, the dust 100 scattered or deposited on the floor surface in a factory such as a steel mill is sucked from the dust collecting nozzle 36 via the suction hose 35 and collected in the dust collecting hopper 15. It is like that. At that time, the communication port 42 provided between the dust collection hopper 15 and the blowing tank 41 is closed by the valve plate 43 by operating the discharge valve 44.

  By doing so, the dust 100 scattered or deposited on the floor surface in a factory such as a steel mill is collected and stored in the dust collection hopper 15. The dust 100 is made of an auxiliary material containing, for example, carbon (C), calcium oxide (CaO), magnesium (Mg), or the like used as a reducing agent.

  Next, in the case of the industrial dust device 1, when the dust collection process is completed, the suction pump 24 is stopped, and then the communication port 42 provided between the dust collection hopper 15 and the blowing tank 41 is opened. Then, the discharge valve 44 is operated for a predetermined time and is opened by the valve plate 43. Then, as shown in FIG. 10, the dust 100 collected in the dust collection hopper 15 falls into the blowing tank 41 by its own weight, but the dust 100 in the dust collection hopper 15 has its own weight. If the drop does not drop sufficiently, the inside of the blowing tank 41 may be set to a negative pressure by a hose. A predetermined amount of dust 100 is accommodated in the blowing tank 41. At that time, the amount of the dust 100 in the blowing tank 41 is detected by the level meters 51a and 51b.

  Thereafter, the communication port 42 provided between the dust collection hopper 15 and the blowing tank 41 is closed by the valve plate 43 by operating the discharge valve 44. In this state, this time, the operator operates the electric control / operation panel 55 to operate a compressor (not shown), and as shown in FIG. The dust 100 supplied from the supply pipe 48 and accommodated in the blowing tank 41 is supplied from the blowing port 52 by the pressurized air supplied through the perforated plate 47. The dust supplied from the blowing port 52 is supplied into an electric furnace for steelmaking (not shown) via a supply hose connected to the blowing port 52, and the dust 100 is used as a secondary agent as a reducing agent. It is used as a raw material.

  Thus, in the case of the industrial dust device 1 according to the above-described embodiment, the dust tank 100 that collects the dust 100 collected inside the dust collection hopper 15 is disposed below the dust collection hopper 15. After being accommodated in 41, it can be automatically supplied from the blowing tank 41 to the electric furnace for steelmaking (not shown) through a supply hose by pressurized air, and in a factory such as a steel mill. Of course, when the auxiliary material used as a reducing agent is scattered as dust 100 in the factory or accumulated everywhere in the factory, the dust 100 can be collected efficiently. In other words, the collected dust 100 can be automatically supplied to a desired supply part such as an electric furnace, and workability and safety to the human body can be greatly improved.

  In addition, as shown in FIG. 11, the industrial dust device 1 can be moved to an arbitrary place by being suspended by a crane K via a wire attached to the upper end portion of the frame body 2. It is also possible to perform dust collection work at high places in factories such as steelworks.

Embodiment 2
12 to 14 show a second embodiment of the present invention. The same reference numerals are given to the same parts as those of the first embodiment, and the second embodiment is formed thin. At the lower end of the dust collection tank, air flow is formed on at least one of its side surfaces to send air to the inside of the side surface to promote the fall of dust collected in the dust collection tank. It is comprised so that a part may be provided.

  In the second embodiment, the dust collecting nozzle is configured to include a magnetic force generating means for adsorbing a magnetic material in the vicinity of the suction opening.

  Further, in the second embodiment, the dust collection nozzle is configured to include a pressurized air injection port for injecting pressurized air in the vicinity of the suction opening.

  That is, in the second embodiment, as shown in FIG. 12, a plurality of intake holes 60 are formed at a predetermined pitch on the rear side surface 22 formed so as to be a steep slope of the dust collecting hopper 15. An air flow forming unit 61 is formed to form an air flow that promotes the fall of the dust 100 collected in the dust collecting hopper 15 by sending pressurized air from the plurality of intake holes 60. It is configured to form.

  In the second embodiment, as shown in FIG. 13, a strong rod-like permanent magnet 70 as a magnetic force generating means for adsorbing a magnetic material in the vicinity (back surface) of the suction opening 37 of the dust collecting nozzle 36. Is attached, and the permanent magnet 70 is configured to adsorb and remove magnetic materials such as iron and iron scraps. Therefore, magnetic materials such as iron and iron scraps are accidentally collected together with dust and supplied to the electric furnace for steel making, and the components and characteristics of the steel material produced in the electric furnace change unnecessarily. Can be prevented.

  In particular, as shown in FIG. 14, an edger 72, a rough rolling mill 73, a finish rolling mill 74, and the like that form an end portion are disposed on the downstream side of the heating furnace 71, and a cooling device 75 is disposed downstream thereof. When dust is collected at the lower part of the rolling process, iron such as scale may be sucked together with the dust 100, and the iron does not have the components and characteristics of the steel material produced in the electric furnace. There is a possibility of changing to the standard.

  Further, in the second embodiment, as shown in FIG. 13, a pressurized air injection port 80 for injecting pressurized air is provided in the vicinity (both ends) of the suction opening 37 of the dust collecting nozzle 36. The pressurized air injection port 80 is connected to the pressurized air supply means. And in this Embodiment 2, the dust adhering to the floor surface etc. of a factory can also be reliably collected by blowing off with the pressurized air injected from a pressurized air injection port.

  Since other configurations and operations are the same as those of the first embodiment, description thereof is omitted.

Embodiment 3
15 and 16 show a third embodiment of the present invention. The same reference numerals are given to the same parts as those in the first embodiment. The hose is preliminarily piped to a predetermined location in the factory or the like, and automatically opens and closes from the predetermined location in the factory or the like by opening and closing the on-off valve provided in the predetermined location of the suction hose. It is configured to be able to collect dust.

  That is, in this Embodiment 3, as shown in FIG.15 and FIG.16, in the building 90 of factories, such as a steel mill, the predetermined | prescribed location where dust accumulates easily, such as the crosspiece 91 located in the high place of the said building 90 In addition, a suction hose 35 is previously piped, and an opening / closing valve 91 and a dust collecting nozzle 36 connected to the tip of the opening / closing valve 91 are arranged in the middle of the suction hose 35. It is configured.

  In the third embodiment, the on-off valve 91 is appropriately opened and closed, and the surrounding dust 100 can be automatically collected from the dust collecting nozzles 36 disposed at predetermined positions. .

  Since other configurations and operations are the same as those of the first embodiment, description thereof is omitted.

FIG. 1 is a front view showing an industrial dust collecting apparatus according to Embodiment 1 of the present invention. FIG. 2 is a plan view showing the industrial dust collector according to Embodiment 1 of the present invention. FIG. 3 is a side view showing the industrial dust collector according to Embodiment 1 of the present invention. FIG. 4 is a front view showing a frame body of the industrial dust collector according to Embodiment 1 of the present invention. FIG. 5 is a plan view showing a frame body of the industrial dust collector according to Embodiment 1 of the present invention. FIG. 6 is a side view showing a frame body of the industrial dust collector according to Embodiment 1 of the present invention. FIG. 7 is a front view showing a dust collection hopper and a blowing tank of the industrial dust collector according to Embodiment 1 of the present invention. FIG. 8 is an explanatory view showing a usage state of the industrial dust collector according to Embodiment 1 of the present invention. FIG. 9 is a configuration diagram showing an opening / closing mechanism of the communication portion. FIG. 10 is an explanatory view showing a usage state of the industrial dust collector according to Embodiment 1 of the present invention. FIG. 11 is a perspective explanatory view showing a state in which the industrial dust collecting apparatus according to Embodiment 1 of the present invention is lifted. FIG. 12 is a main part configuration diagram showing an industrial dust collecting apparatus according to Embodiment 2 of the present invention. FIG. 13 is a main part configuration diagram showing an industrial dust collector according to Embodiment 2 of the present invention. FIG. 14 is an explanatory diagram showing a rolling process to which the industrial dust collector according to Embodiment 2 of the present invention can be applied. FIG. 15 is a main part configuration diagram showing an industrial dust collector according to Embodiment 3 of the present invention. FIG. 16 is a main part configuration diagram showing an industrial dust collector according to Embodiment 3 of the present invention.

Explanation of symbols

  1: Industrial dust collecting device, 2: Frame body, 15: Dust collecting hopper (dust collecting tank), 23: Suction device, 36: Dust collecting nozzle, 40: Communication part, 41: Blowing tank.

Claims (9)

A dust collection tank whose inside is kept at a negative pressure by suction means;
A dust collecting nozzle for collecting dust through a suction hose connected to the dust collecting tank;
An industrial tank characterized in that it is disposed in communication with the lower part of the dust collection tank, and has a blowing tank for supplying dust collected inside the dust collection tank to the supplied part by air pressure. Dust collector. The communicating part between the dust collection tank and the blowing tank is provided with an opening / closing means for opening and closing the communicating part, and a pressurized air supply means for supplying pressurized air to the inside of the blowing tank. The industrial dust collector according to claim 1. A porous plate-like member that prevents the passage of dust and allows air to pass therethrough is disposed at the bottom of the blowing tank, and the pressurized air supply means is provided from below the porous plate-like member. The industrial dust collector according to claim 2, wherein pressurized air is supplied. The industrial dust collector according to any one of claims 1 to 3, wherein the dust collecting tank has a thin lower end, and the thin lower end communicates with a blowing tank. Dust equipment. At least one side surface of the thinly formed dust collection tank is formed with an air flow that promotes the fall of dust collected in the dust collection tank by sending air to the inside of the side surface. The industrial dust collector according to any one of claims 1 to 4, further comprising an air flow forming section. 6. The industrial dust collector according to claim 1, wherein the industrial dust collector is configured to be lifted by a crane so as to be freely movable in a building such as a factory. The suction hose is preliminarily piped to a predetermined location in a building such as a factory, and by opening and closing an on-off valve provided in the predetermined location of the suction hose, the predetermined location in the building such as a factory The industrial dust collector according to claim 1, wherein the dust collector can automatically collect dust. The industrial dust collector according to any one of claims 1 to 7, wherein the dust collecting nozzle includes magnetic force generating means for adsorbing a magnetic material in the vicinity of the suction opening. The industrial collection according to any one of claims 1 to 8, wherein the dust collection nozzle includes a pressurized air injection port for injecting pressurized air in the vicinity of the suction opening. Dust equipment.

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