CN115531766A - Be used for cement manufacture processing carbon dioxide fire extinguishing apparatus for coal pulverizer - Google Patents
Be used for cement manufacture processing carbon dioxide fire extinguishing apparatus for coal pulverizer Download PDFInfo
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- CN115531766A CN115531766A CN202211161329.7A CN202211161329A CN115531766A CN 115531766 A CN115531766 A CN 115531766A CN 202211161329 A CN202211161329 A CN 202211161329A CN 115531766 A CN115531766 A CN 115531766A
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C2/00—Fire prevention or containment
- A62C2/04—Removing or cutting-off the supply of inflammable material
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C99/00—Subject matter not provided for in other groups of this subclass
- A62C99/0009—Methods of extinguishing or preventing the spread of fire by cooling down or suffocating the flames
- A62C99/0018—Methods of extinguishing or preventing the spread of fire by cooling down or suffocating the flames using gases or vapours that do not support combustion, e.g. steam, carbon dioxide
- A62C99/0027—Carbon dioxide extinguishers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
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Abstract
The invention discloses carbon dioxide fire extinguishing equipment for a cement production and processing coal mill, which belongs to the technical field of cement processing coal mills and aims at solving the problems of low fire extinguishing effect and low flame-retardant fire extinguishing efficiency caused by spontaneous combustion at the discharge position of a rotary coal mill; according to the invention, the carbon dioxide in the cooling section is cooled by the cold air, then reaches the cooling section and is conveyed from the top end of the discharge pipe, the discharge pipe is covered for flame retardance, and the cold air interlayer is matched for gradually cooling the inside of the rotary cylinder of the coal mill, so that the discharge pipe is gradually cooled, and the inside of the pulverized coal is gradually cooled.
Description
Technical Field
The invention belongs to the technical field of cement processing coal mills, and particularly relates to carbon dioxide fire extinguishing equipment for a cement production processing coal mill.
Background
The coal mill is a machine for crushing and grinding coal blocks into coal powder, and is an important auxiliary device of a coal powder furnace. The coal grinding process is a process that coal is crushed and the surface area of the coal is increased continuously; to increase the new surface area, the binding force between solid molecules must be overcome, thus consuming energy; the coal is ground into coal powder in a coal mill mainly by three modes of crushing, smashing and grinding.
The conventional coal mill generally adopts a rotary coal mill, in the working engineering, a mechanical structure in the shell of the coal mill generates a large amount of heat due to friction, when the heat is accumulated to a certain value until the ignition point of coal is reached, the coal in the shell is easy to generate spontaneous combustion at a discharge position, and the phenomenon can cause serious adverse effects.
Therefore, a carbon dioxide fire extinguishing device for a coal mill for producing and processing cement is needed, and the problems that the fire extinguishing treatment effect is very low and the fire-retardant fire extinguishing efficiency is low due to the spontaneous combustion phenomenon at the discharging position of the rotary coal mill in the prior art are solved.
Disclosure of Invention
The invention aims to provide carbon dioxide fire extinguishing equipment for a cement production and processing coal mill, which solves the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a be used for cement manufacture processing carbon dioxide fire extinguishing apparatus for coal pulverizer, includes two fixing bases that are the symmetric distribution, two it is connected with the coal mill revolving drum to rotate between the fixing base, one of them the inside of fixing base is provided with the inlet pipe with coal mill revolving drum intercommunication, another the inside of fixing base is provided with the discharging pipe with coal mill revolving drum intercommunication, the surface mounting of coal mill revolving drum has the profile of tooth circle, is close to the outer terminal surface mounting of the fixing base of profile of tooth circle has gear motor, gear motor's output coaxial coupling has rotating gear, rotating gear with the profile of tooth circle meshing is connected, the inner wall of coal mill revolving drum is fixed with the heat preservation cover, the laminating of the bottom surface of coal mill revolving drum is provided with the gas collecting box, the outer terminal surface intercommunication of gas collecting box has two gas transmission pipe that are the symmetric distribution, the coal mill revolving drum with be provided with air current conveying mechanism between the heat preservation cover, one side of gas transmission pipe is provided with the carbon dioxide storage tank, the top surface of carbon dioxide storage tank with the intercommunication has the carbon dioxide pipe between the discharging pipe.
It needs to explain in the scheme that air flow conveying mechanism includes a plurality of airflow one-way check valves that are evenly distributed, and is a plurality of airflow one-way check valve all fixedly runs through the surface of coal mill revolving drum, every airflow one-way check valve's the end of giving vent to anger all communicates and has carried the ring, carry the fixed cover of ring to locate the surface of heat preservation cover, carry the surface that the ring was towards heat preservation cover the central axis department and seted up a plurality of ventholes that are evenly distributed.
It is further worth explaining that the outer surface of the coal mill rotary cylinder is in fit arrangement with the top surface of the gas collection box, sealing rings which are tightly sleeved on the outer surface of the coal mill rotary cylinder are arranged on two sides of the gas collection box, and the tooth-shaped rings are in fit arrangement with the opposite surfaces of the adjacent sealing rings.
It should be further noted that the carbon dioxide conduit includes a discharge section, a cooling section and a cooling section which are sequentially communicated, the cooling section of the carbon dioxide conduit fixedly penetrates through the gas collection box, and the cooling section of the carbon dioxide conduit is communicated with the top surface of the discharge pipe.
As a preferred embodiment, the discharge section, the cooling section and the cooling section of the carbon dioxide conduit are all arranged in an L shape, and two ends of the cooling section of the carbon dioxide are respectively located on the end face and the adjacent side face of the gas collecting box.
In a preferred embodiment, the top surface of the feeding pipe is communicated with an air supply pipe, and the air supply pipe is obliquely arranged on the top surface of the feeding pipe.
A use method of carbon dioxide fire extinguishing equipment for a cement production and processing coal mill comprises the following steps:
s1, quenching a heat preservation cover: transmitting an electric signal to a PLC (programmable logic controller) at one side of a gas collection box through a temperature sensor, sending an instruction by the PLC, stopping a speed reduction motor, positioning an airflow one-way check valve in the gas collection box, closing a gas transmission conduit for transmitting hot gas, simultaneously opening a gas transmission conduit for transmitting cold gas, gathering the cold gas through the gas collection box, allowing the cold gas to enter a transmission ring from the inside of the airflow one-way check valve, performing central gas outlet through a gas outlet hole of the transmission ring, performing cold-heat exchange on a heat-insulating cover, and performing integral shock cooling treatment on a rotary cylinder and a heat-insulating cover area of a coal mill;
s2, covering and inflaming retarding of a discharge pipe by carbon dioxide: after the gas transmission guide pipe transmits cold gas for 3min in the step S1, a carbon dioxide storage tank is controlled by a PLC (programmable logic controller) to be opened, carbon dioxide is discharged from a discharge section through the carbon dioxide guide pipe, the carbon dioxide in a cooling section is cooled by the cold gas in a gas collection box, then the carbon dioxide is transmitted from the top end of a discharge pipe to a cooling section, and the discharge pipe is covered and flame-retardant;
s3, air supply and cooling of the feeding pipe: and (3) in the step (S2), when the carbon dioxide storage tank is used for conveying carbon dioxide to the discharge pipe for covering and inflaming retarding, no naked flame exists and the temperature is kept to be reduced, cold air conveying is carried out on the blast pipe at the top end of the feed pipe, and the front end of the feed pipe of the rotary cylinder of the coal mill is cooled until the temperature difference between the inside and the outside of the heat-preserving cover is consistent.
In a preferred embodiment, when the air supply pipe delivers the cold air in step S, the coal mill rotary cylinder is driven by the speed reduction motor to rotate at a slow speed, and the outer surface of the coal mill rotary cylinder and the cold air in the air collecting box perform uniform rotation heat exchange treatment.
Compared with the prior art, the carbon dioxide fire extinguishing equipment for the cement production and processing coal mill provided by the invention at least has the following beneficial effects:
(1) The gas collection box collects cold gas and enters the conveying ring from the air flow one-way check valve, central gas outlet is performed through a gas outlet hole of the conveying ring, heat exchange is performed on the heat-preservation cover, integral shock cooling treatment is performed on the coal mill rotary cylinder and the heat-preservation cover area to form a cold air interlayer, so that the temperature of the coal mill rotary cylinder and the heat-preservation cover is greatly reduced, the temperature is prevented from being continuously increased, then the carbon dioxide in a cooling section is cooled through the cold gas, the carbon dioxide is conveyed from the top end of the discharge pipe in the cooling section, the discharge pipe is covered and flame-retardant, the cold air interlayer is matched to gradually cool the coal mill rotary cylinder, so that the discharge pipe is gradually cooled, the inside of pulverized coal is gradually cooled, the temperature rise inside the pulverized coal is prevented, the hidden fire phenomenon exists, the cold air interlayer surrounds the gradual temperature decrease from the outside to the inside, and the carbon dioxide is flame-retardant covering and fire extinguishing double matching is realized, and the flame-retardant fire extinguishing effect and efficiency of the coal mill rotary cylinder are greatly improved.
(2) Through the setting of blast pipe, both can be convenient for initial raw materials carry out wind-force and carry, can be to when discharging pipe department temperature risees again, carry out the cooling processing of supplying air to the coal mill revolving drum inside.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of a partial structure of the heat-preserving cover, the gas-collecting box and the conveying ring of the present invention;
FIG. 3 is an enlarged view of area A of FIG. 2 according to the present invention;
FIG. 4 is a schematic view of the present invention showing a partial structure of the rotary gear and the transfer ring;
fig. 5 is an enlarged structural schematic diagram of the area B in fig. 4 according to the present invention.
In the figure: 1. a fixed seat; 2. a coal mill rotary drum; 3. a feed pipe; 4. a discharge pipe; 5. a toothed ring; 6. a reduction motor; 7. a rotating gear; 8. a heat-preserving cover; 9. a gas collection tank; 10. a gas delivery conduit; 11. an air flow delivery mechanism; 111. an airflow one-way check valve; 112. a delivery ring; 113. an air outlet; 12. a carbon dioxide storage tank; 13. a carbon dioxide conduit; 131. a discharging section; 132. a cooling section; 133. a cooling section; 14. a seal ring; 15. and an air supply pipe.
Detailed Description
The present invention will be further described with reference to the following examples.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative work based on the described embodiments of the present invention belong to the protection scope of the present invention.
The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention. The conditions in the embodiments may be further adjusted according to specific conditions, and simple modifications of the method of the present invention based on the concept of the present invention are all within the scope of the present invention as claimed.
Referring to fig. 1-5, the invention provides a carbon dioxide fire extinguishing apparatus for a cement production and processing coal mill, which comprises two symmetrically distributed fixing seats 1, a coal mill rotary cylinder 2 is rotatably connected between the two fixing seats 1, a feed pipe 3 communicated with the coal mill rotary cylinder 2 is arranged inside one of the fixing seats 1, a discharge pipe 4 communicated with the coal mill rotary cylinder 2 is arranged inside the other fixing seat 1, a temperature sensor is arranged at the position of the discharge pipe 4, a toothed ring 5 is fixed on the outer surface of the coal mill rotary cylinder 2, a speed reduction motor 6 is fixed on the outer end surface of the fixing seat 1 close to the toothed ring 5, an output end of the speed reduction motor 6 is coaxially connected with a rotating gear 7, the rotating gear 7 is meshed with the toothed ring 5, a heat preservation cover 8 is fixed on the inner wall of the coal mill rotary cylinder 2, a gas collection tank 9 is attached to the outer surface of the bottom of the coal mill rotary cylinder 2, two symmetrically distributed gas transmission conduits 10 are communicated with the outer end surface of the gas collection tank 9, wherein the two gas transmission conduits 10 are respectively communicated with a hot gas transmission mechanism and a cold gas transmission mechanism, an air flow transmission mechanism 11 is arranged between the coal mill rotary cylinder 2 and the carbon dioxide storage tank 12, a carbon dioxide storage tank 12 is arranged on one side of the carbon dioxide storage tank 12, and an electromagnetic valve 12 is connected with a carbon dioxide storage tank 13, and a carbon dioxide storage tank 13, the carbon dioxide storage tank is arranged at the carbon dioxide storage tank 13, and an electromagnetic valve is arranged at the temperature sensor.
Further as shown in fig. 2, fig. 4 and fig. 5, it is worth specifically explaining that the air flow conveying mechanism 11 includes a plurality of air flow one-way check valves 111 that are uniformly distributed, the plurality of air flow one-way check valves 111 all fixedly penetrate through the outer surface of the coal mill rotary cylinder 2, the air outlet end of each air flow one-way check valve 111 is communicated with a conveying ring 112, the conveying ring 112 is fixedly sleeved on the outer surface of the heat-insulating cover 8, a plurality of air outlet holes 113 that are uniformly distributed are formed in the surface of the conveying ring 112 facing the central axis of the heat-insulating cover 8, wherein the air flow one-way check valve 111 is used for carrying out one-way communication conveying processing on the cold air in the air collection box 9, so that the conveying ring 112 and the air outlet holes 113 cool the interior of the coal mill rotary cylinder 2 and form a cold air separation layer.
Further as shown in fig. 1 and 2, it is worth specifically explaining that the outer surface of the coal mill rotary cylinder 2 is in a fit arrangement with the top surface of the gas collecting tank 9, both sides of the gas collecting tank 9 are provided with sealing rings 14 tightly sleeved on the outer surface of the coal mill rotary cylinder 2, and the tooth-shaped ring 5 is in a fit arrangement with the opposite surface of the adjacent sealing ring 14, wherein the sealing ring 14 is arranged to further improve the sealing effect on the joint of the gas collecting tank 9 and the coal mill rotary cylinder 2, and the tooth-shaped ring 5 can be limited to a certain extent.
As further shown in fig. 1, fig. 2 and fig. 3, it is worth specifically describing that the carbon dioxide conduit 13 includes a discharging section 131, a cooling section 132 and a cooling section 133 which are sequentially communicated, the cooling section 132 of the carbon dioxide conduit 13 fixedly penetrates through the gas collecting box 9, and the cooling section 133 of the carbon dioxide conduit 13 is communicated with the top surface of the discharging pipe 4.
As further shown in fig. 1, fig. 2 and fig. 3, it is worth specifically describing that the discharging section 131, the cooling section 132 and the cooling section 133 of the carbon dioxide conduit 13 are all L-shaped, and two ends of the cooling section 132 of the carbon dioxide are respectively located at the end face and the adjacent side face of the gas collecting box 9.
The scheme has the following working processes: when the temperature sensor detects that the temperature at the discharge pipe 4 of the coal mill rotary cylinder 2 is too high or spontaneous combustion occurs, the temperature sensor transmits an electric signal to the PLC, the PLC sends out an instruction, the speed reduction motor 6 stops the process, the air flow one-way check valve 111 is positioned in the air collecting box 9, the air conveying conduit 10 for conveying hot air is closed, the air conveying conduit 10 for conveying cold air is opened at the same time, the cold air is collected by the air collecting box 9 and enters the conveying ring 112 from the air flow one-way check valve 111, central air outlet is carried out through the air outlet hole 113 of the conveying ring 112, cold and heat exchange is carried out on the heat-insulating cover 8, and the whole shock cooling treatment is carried out on the areas of the coal mill rotary cylinder 2 and the heat-insulating cover 8 to form a cold air interlayer, so that the temperature at the coal mill rotary cylinder 2 and the heat-insulating cover 8 is greatly reduced, and the temperature is prevented from being continuously increased;
after 3min, the gas transmission pipe 10 carries cold air, open the processing through PLC controller control carbon dioxide storage tank 12, through carbon dioxide pipe 13 with the carbon dioxide from ejection of compact section 131 ejection of compact, cool off the carbon dioxide of cooling zone 132 through the air conditioning in the gas collecting box 9 and carry out cooling process, reach cooling section 133 from the top of discharging pipe 4 then and carry the carbon dioxide, it is fire-retardant to cover discharging pipe 4 department, it is fire-retardant through covering it, and gradually cool down in to the coal mill revolving drum 2 through the air conditioning interlayer, thereby gradually cool down the processing to discharging pipe 4 department, gradually cool down to the inside of buggy, prevent that buggy is inside to heat up and there is the hidden fire phenomenon.
According to the working process, the following steps are known: the gas collection box 9 collects cold gas and the cold gas enters the conveying ring 112 from the air flow one-way check valve 111, central gas outlet is performed through the gas outlet hole 113 of the conveying ring 112, heat exchange is performed on the heat-insulating cover 8, integral shock cooling treatment is performed on the coal mill rotary cylinder 2 and the heat-insulating cover 8 area, a cold air interlayer is formed, the temperature of the coal mill rotary cylinder 2 and the heat-insulating cover 8 is greatly reduced, temperature is prevented from being continuously increased, then the carbon dioxide of the cooling section 132 is cooled through the cold gas, the carbon dioxide reaches the cooling section 133 and is conveyed from the top end of the discharging pipe 4, the discharging pipe 4 is covered and flame-retardant, gradual cooling is performed on the coal mill rotary cylinder 2 by matching with the cold air interlayer, temperature reduction treatment is performed on the discharging pipe 4 gradually, gradual cooling is performed on the inside of coal powder, temperature rise inside of the coal powder is prevented from being increased, a dark fire phenomenon exists, the cold gas interlayer surrounds the gradual cooling from outside to inside, and the carbon dioxide is covered and flame-retardant and extinguishes, and the double matching is greatly improved, and the effect and the efficiency of flame-retardant and fire extinguishment of the coal mill rotary cylinder 2 are greatly improved.
As further shown in fig. 1 and fig. 2, it should be specifically described that the top surface of the feeding pipe 3 is communicated with an air supply pipe 15, the air supply pipe 15 is obliquely arranged on the top surface of the feeding pipe 3, and the arrangement of the air supply pipe 15 not only facilitates the wind conveying of the initial raw material, but also performs the air supply and temperature reduction treatment on the inside of the coal mill rotary drum 2.
A use method of carbon dioxide fire extinguishing equipment for a cement production and processing coal mill comprises the following steps:
s1, quenching in a heat-preservation cover 8: transmitting an electric signal to a PLC (programmable logic controller) on one side of a gas collection box 9 through a temperature sensor, sending an instruction by the PLC, stopping the speed reducing motor 6, enabling an airflow one-way check valve 111 to be positioned inside the gas collection box 9, closing a gas transmission conduit 10 for transmitting hot gas and simultaneously opening the gas transmission conduit 10 for transmitting cold gas, gathering the cold gas through the gas collection box 9, enabling the cold gas to enter a transmission ring 112 from the airflow one-way check valve 111, discharging gas centrally through a gas outlet hole 113 of the transmission ring 112, performing heat and cold exchange on a heat preservation cover 8, and performing integral shock cooling treatment on the areas of a rotary cylinder 2 and the heat preservation cover 8 of the coal mill;
s2, carbon dioxide coverage flame retardance of a discharge pipe 4: after the gas transmission conduit 10 transmits cold gas for 3min in the step S1, the PLC controller controls the carbon dioxide storage tank 12 to open, the carbon dioxide is discharged from the discharge section 131 through the carbon dioxide conduit 13, the carbon dioxide in the cooling section 132 is cooled through the cold gas in the gas collection box 9, and then the carbon dioxide is transmitted from the top end of the discharge pipe 4 to the cooling section 133, so as to cover and retard flame at the discharge pipe 4;
s3, air supply and cooling of the feed pipe 3: in the step S2, when the carbon dioxide storage tank 12 is used for conveying carbon dioxide to the discharge pipe 4 for covering and inflaming retarding, no naked flame exists and the temperature is kept to be reduced, cold air conveying is carried out on the blast pipe 15 at the top end of the feed pipe 3, and the front end of the feed pipe 3 of the coal mill rotary drum 2 is cooled until the temperature difference between the inside and the outside of the heat preservation cover 8 is consistent.
It is worth specifically saying that, when the air supply pipe 15 carries out cold air conveying in step S3, the coal mill rotary drum 2 rotates at a slow speed by the driving of the speed reduction motor 6, the outer surface of the coal mill rotary drum 2 and the cold air in the air collection box 9 carry out uniform heat exchange treatment by rotation, and after the surface of the coal mill rotary drum 2 is greatly cooled, the surface of the coal mill rotary drum 2 can rotate at a slow speed through the coal mill rotary drum 2, so that uniform cooling treatment can be carried out on the surface of the coal mill rotary drum 2.
The gear motor 6 can be purchased in the market, and the gear motor 6 is provided with a power supply, which belongs to the mature technology in the field and is fully disclosed, so repeated description in the specification is omitted.
Unless defined otherwise, technical terms or scientific terms used herein should be commonly understood by one of ordinary skill in the art, and the terms "including" or "comprising" and the like as used herein mean that elements or items before the term are included in the elements or items listed after the term and their equivalents, but do not exclude other elements or items, and the terms "connected" or "connected" and the like are not limited to physical or mechanical connections, but may also include electrical connections, whether direct or indirect, "upper", "lower", "left", "right", and the like, which are used to indicate relative positional relationships, and may also change accordingly when the absolute position of the described object changes.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A carbon dioxide fire extinguishing apparatus for a coal mill for cement production and processing comprises two fixing seats (1) which are symmetrically distributed, wherein a coal mill rotary cylinder (2) is rotatably connected between the two fixing seats (1), the carbon dioxide fire extinguishing apparatus is characterized in that one of the fixing seats (1) is internally provided with a feeding pipe (3) communicated with the coal mill rotary cylinder (2), the other fixing seat (1) is internally provided with a discharging pipe (4) communicated with the coal mill rotary cylinder (2), the outer surface of the coal mill rotary cylinder (2) is fixedly provided with a toothed ring (5), the outer end face of the fixing seat (1) close to the toothed ring (5) is fixedly provided with a speed reducing motor (6), the output end of the speed reducing motor (6) is coaxially connected with a rotating gear (7), the rotating gear (7) is meshed with the toothed ring (5), the inner wall of the coal mill rotary cylinder (2) is fixedly provided with a heat preservation cover (8), the outer surface of the bottom of the coal mill rotary cylinder (2) is provided with a gas collection tank (9), the outer end face of the gas collection tank (9) is communicated with two gas transmission guide pipes (10) which are symmetrically distributed, a heat preservation mechanism (11) is arranged between the coal mill rotary cylinder (2) and the carbon dioxide transmission mechanism (12), and a carbon dioxide guide pipe (13) is communicated between the top surface of the carbon dioxide storage tank (12) and the discharge pipe (4).
2. The carbon dioxide fire extinguishing apparatus for the cement production processing coal mill as claimed in claim 1, wherein: airflow conveyor constructs (11) are including a plurality of airflow check valve (111) that are evenly distributed, and are a plurality of airflow check valve (111) is all fixed to be run through the surface of coal mill revolving cylinder (2), every the end of giving vent to anger of airflow check valve (111) all communicates and has carries ring (112), carry the fixed cover of ring (112) to be located the surface of heat preservation cover (8), carry ring (112) to offer a plurality of ventholes (113) that are evenly distributed towards the surface of heat preservation cover (8) the central axis department.
3. The carbon dioxide fire extinguishing apparatus for the cement production processing coal mill as claimed in claim 2, wherein: the outer surface of the coal mill rotary cylinder (2) is in fit arrangement with the top surface of the gas collection box (9), the two sides of the gas collection box (9) are respectively provided with a sealing ring (14) which is tightly sleeved on the outer surface of the coal mill rotary cylinder (2), and the tooth-shaped ring (5) is adjacent to the opposite surface of the sealing ring (14) and is in fit arrangement.
4. The carbon dioxide fire extinguishing apparatus for the cement production processing coal mill as claimed in claim 1, wherein: carbon dioxide pipe (13) are including being ejection of compact section (131), cooling section (132) and cooling section (133) that communicate in proper order, cooling section (132) of carbon dioxide pipe (13) are fixed to be run through gas collection box (9), cooling section (133) of carbon dioxide pipe (13) with the top surface intercommunication of discharging pipe (4).
5. The carbon dioxide fire extinguishing apparatus for the cement production processing coal mill as claimed in claim 4, wherein: the discharge section (131), the cooling section (132) and the cooling section (133) of the carbon dioxide guide pipe (13) are all arranged in an L shape, and two ends of the cooling section (132) of the carbon dioxide are respectively located on the end face and the adjacent side face of the gas collection box (9).
6. The carbon dioxide fire extinguishing apparatus for the cement production processing coal mill as claimed in claim 1, wherein: the top surface of inlet pipe (3) intercommunication has blast pipe (15), blast pipe (15) are the slope and set up in the top surface of inlet pipe (3).
7. Use of a carbon dioxide fire extinguishing apparatus for a cement producing process coal mill according to any one of claims 1 to 6, characterized in that: the method comprises the following steps:
s1, quenching in a heat-preservation cover (8): the electric signal is transmitted to a PLC (programmable logic controller) on one side of a gas collection box (9) through a temperature sensor, the PLC sends out an instruction, a speed reducing motor (6) stops working, an airflow one-way check valve (111) is positioned inside the gas collection box (9), a gas transmission conduit (10) for transmitting hot gas is closed, the gas transmission conduit (10) for transmitting cold gas is opened at the same time, the cold gas is gathered through the gas collection box (9) and enters a transmission ring (112) from the airflow one-way check valve (111), central gas outlet is carried out through a gas outlet hole (113) of the transmission ring (112), cold and heat exchange is carried out on a heat preservation cover (8), and integral shock cooling treatment is carried out on the areas of a coal mill rotary cylinder (2) and the heat preservation cover (8);
s2, covering and inflaming retarding of a discharge pipe (4) by carbon dioxide: after the gas transmission guide pipe (10) transmits cold gas for 3min in the step S1, the PLC controller controls the carbon dioxide storage tank (12) to be opened, carbon dioxide is discharged from the discharge section (131) through the carbon dioxide guide pipe (13), the carbon dioxide in the cooling section (132) is cooled through the cold gas in the gas collection box (9), and then the carbon dioxide is transmitted from the top end of the discharge pipe (4) to the cooling section (133), so that the discharge pipe (4) is covered and flame-retardant;
s3, air supply and cooling of the feeding pipe (3): and in the step S2, when the carbon dioxide storage tank (12) conveys carbon dioxide to the discharge pipe (4) for covering and inflaming retarding, no naked flame exists and the temperature is kept to be reduced, cold air conveying is carried out on the blast pipe (15) at the top end of the feed pipe (3), and the front end of the feed pipe (3) of the coal mill rotary cylinder (2) is cooled until the temperature difference between the inside and the outside of the heat-preserving cover (8) is consistent.
8. The use method of the carbon dioxide fire extinguishing apparatus for the cement production processing coal mill according to claim 7, characterized in that: when the air supply pipe (15) carries out cold air conveying in the step S3, the coal mill rotary cylinder (2) rotates at a slow speed through the driving of the speed reducing motor (6), and the outer surface of the coal mill rotary cylinder (2) and cold air in the air collection box (9) rotate to carry out uniform heat exchange treatment.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211161329.7A CN115531766B (en) | 2022-09-22 | 2022-09-22 | Carbon dioxide fire extinguishing equipment for cement production and processing coal mill |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211161329.7A CN115531766B (en) | 2022-09-22 | 2022-09-22 | Carbon dioxide fire extinguishing equipment for cement production and processing coal mill |
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| CN115531766B CN115531766B (en) | 2023-08-25 |
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| US20160096182A1 (en) * | 2012-05-01 | 2016-04-07 | Innovative Combustion Technologies, Inc. | Pulverizer mill protection system |
| CN206864930U (en) * | 2017-05-17 | 2018-01-09 | 合肥智鼎电控自动化科技有限公司 | A kind of fire-retardent distribution box |
| CN207312297U (en) * | 2017-09-13 | 2018-05-04 | 云南雷鸣石油设备制造有限责任公司 | A kind of explosion-proof thermal insulation Oil Tank |
| CN210813605U (en) * | 2020-03-06 | 2020-06-23 | 天能水泥有限公司 | Carbon dioxide fire extinguishing system for coal mill for cement production and processing |
| CN112682811A (en) * | 2020-12-28 | 2021-04-20 | 国电电力邯郸东郊热电有限责任公司 | Coal blending and blending combustion system and method |
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2022
- 2022-09-22 CN CN202211161329.7A patent/CN115531766B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160096182A1 (en) * | 2012-05-01 | 2016-04-07 | Innovative Combustion Technologies, Inc. | Pulverizer mill protection system |
| CN206864930U (en) * | 2017-05-17 | 2018-01-09 | 合肥智鼎电控自动化科技有限公司 | A kind of fire-retardent distribution box |
| CN207312297U (en) * | 2017-09-13 | 2018-05-04 | 云南雷鸣石油设备制造有限责任公司 | A kind of explosion-proof thermal insulation Oil Tank |
| CN210813605U (en) * | 2020-03-06 | 2020-06-23 | 天能水泥有限公司 | Carbon dioxide fire extinguishing system for coal mill for cement production and processing |
| CN112682811A (en) * | 2020-12-28 | 2021-04-20 | 国电电力邯郸东郊热电有限责任公司 | Coal blending and blending combustion system and method |
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| CN115531766B (en) | 2023-08-25 |
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