CN115531766B - Carbon dioxide fire extinguishing equipment for cement production and processing coal mill - Google Patents
Carbon dioxide fire extinguishing equipment for cement production and processing coal mill Download PDFInfo
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- CN115531766B CN115531766B CN202211161329.7A CN202211161329A CN115531766B CN 115531766 B CN115531766 B CN 115531766B CN 202211161329 A CN202211161329 A CN 202211161329A CN 115531766 B CN115531766 B CN 115531766B
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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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- Food Science & Technology (AREA)
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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 the problems of very little fire extinguishing effect and lower fire retarding and extinguishing efficiency caused by spontaneous combustion at a discharge position of a rotary coal mill; according to the invention, the carbon dioxide of the cooling section is cooled by the cold air, then the cooling section is reached to convey the carbon dioxide from the top end of the discharging pipe, the discharging pipe is covered and flame-retardant, and the inner part of the rotary drum of the coal mill is gradually cooled by the cold air interlayer, so that the cooling treatment is gradually carried out on the discharging pipe, and the inner part of the coal dust 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 dust, and is an important auxiliary device of a coal dust furnace. The coal grinding process is a process that coal is crushed and the surface area of the coal is continuously increased; to increase the new surface area, the binding force between the solid molecules must be overcome, thus consuming energy; coal is ground into pulverized coal in coal mills, mainly by three modes of crushing, shredding and grinding.
The cement preparation industry needs the assistance of a coal mill, the traditional coal mill generally adopts a rotary coal mill, in the working engineering, the mechanical structure in the coal mill shell can generate a large amount of heat due to friction, when the heat is accumulated to a certain value until reaching the ignition point of coal, the phenomenon that the coal in the shell is easy to self-ignite at a discharging position can cause serious adverse effects, the current method for treating the problem generally inputs carbon dioxide into the shell, thereby achieving the aim of covering flame retardance and fire extinguishment, but the phenomenon of high temperature and dark fire still easily exists in the coal powder, and the effect of flame retardance and fire extinguishment by the carbon dioxide is very little that the method can achieve at the same time, and the flame retardance and fire extinguishment efficiency is lower.
Therefore, a carbon dioxide fire extinguishing device for a cement production and processing coal mill is needed, and the problems that in the prior art, spontaneous combustion phenomenon occurs at a discharging position of a rotary coal mill to perform fire extinguishing treatment is very little, and the fire retarding and extinguishing efficiency is low are solved.
Disclosure of Invention
The invention aims to provide carbon dioxide fire extinguishing equipment for a cement production and processing coal mill, which is used for solving the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a carbon dioxide fire extinguishing apparatus for cement manufacture coal mill, includes two fixing bases that are symmetric distribution, two rotate between the fixing base and be connected with coal mill rotary drum, one of them the inside of fixing base is provided with the inlet pipe with coal mill rotary drum intercommunication, another the inside of fixing base is provided with the discharging pipe with coal mill rotary drum intercommunication, the surface mounting of coal mill rotary drum has the tooth form circle, is close to the fixing base outer end face of tooth form circle is fixed with gear motor, gear motor's output coaxial coupling has rotation gear, rotation gear with tooth form circle meshing is connected, the inner wall of coal mill rotary drum is fixed with the heat preservation cover, the laminating of the bottom surface of coal mill rotary drum is provided with the gas collecting box, the outer end face intercommunication of gas collecting box has two gas transmission pipes that are symmetric distribution, the coal mill rotary drum with be provided with air current conveying mechanism between the heat preservation cover, one side of gas transmission pipe is provided with carbon dioxide storage tank, the top surface of carbon dioxide storage tank with the intercommunication between the discharging pipe has the carbon dioxide pipe.
In the scheme, it is to be noted that, air current conveying mechanism includes a plurality of air current one-way check valves that are evenly distributed, a plurality of air current one-way check valves all fix and run through the surface of coal mill revolving drum, every the end of giving vent to anger of air current one-way check valve all communicates and has the conveying ring, the fixed cover of conveying ring is located the surface of heat preservation cover, a plurality of ventholes that are evenly distributed are seted up towards the surface of heat preservation cover central axis department to the conveying ring.
It is further worth to say that the surface of coal mill rotary drum with the top surface of gas collection box is the laminating setting, the both sides of gas collection box all are provided with the fastening cup joint in the sealing washer of coal mill rotary drum surface, the profile of tooth circle with adjacent the opposite face of sealing washer is the laminating setting.
It is still further to be noted that, the carbon dioxide pipe is including being ejection of compact section, cooling section and the cooling section that communicates in proper order, the cooling section of carbon dioxide pipe is fixed to be run through the gas-collecting channel, the cooling section of carbon dioxide pipe with the top surface intercommunication of ejection of compact pipe.
As a preferred implementation mode, the discharging section, the cooling section and the cooling section of the carbon dioxide guide pipe are all L-shaped, and two ends of the cooling section of the carbon dioxide are respectively positioned on the end face and the adjacent side face of the gas collecting tank.
As a preferred implementation mode, 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.
The application method of the carbon dioxide fire extinguishing equipment for the cement production and processing coal mill comprises the following steps:
s1, quenching the heat preservation cover: the PLC controller transmits an electric signal to one side of the gas collecting box through the temperature sensor, the PLC controller sends out an instruction, the gear motor stops for processing, the airflow one-way check valve is positioned in the gas collecting box, the gas transmission pipe for conveying hot gas is closed, the gas transmission pipe for conveying cold gas is opened at the same time, the cold gas is gathered through the gas collecting box and enters the conveying ring from the inside of the airflow one-way check valve, central gas outlet is carried out through the gas outlet hole of the conveying ring, cold and heat exchange is carried out on the heat preservation cover, and integral quenching processing is carried out on the rotary cylinder of the coal mill and the heat preservation cover area;
s2, carbon dioxide covering and flame retarding of the discharging pipe: after the air delivery conduit delivers cold air for 3min in the step S1, the PLC controller controls the carbon dioxide storage tank to be opened, carbon dioxide is discharged from the discharging section through the carbon dioxide conduit, the carbon dioxide in the cooling section is cooled through the cold air in the air collection box, then the cooling section is reached to deliver the carbon dioxide from the top end of the discharging pipe, and the discharging pipe is covered and flame-retardant;
s3, air supply and cooling of the feeding pipe: and in the step S2, when the carbon dioxide storage tank covers and retards the carbon dioxide conveyed by the discharge pipe without open fire and the temperature is kept to be reduced, cold air is conveyed to the air supply pipe at the top end of the feed pipe, and the front end of the feed pipe of the rotary drum of the coal mill is cooled until the temperature difference between the inside and the outside of the heat preservation cover is consistent.
In the step S, when the air supply pipe is used for conveying cold air, the rotary drum of the coal mill is driven by the speed reducing motor to rotate slowly, and the outer surface of the rotary drum of the coal mill and the cold air in the air collection box are subjected to uniform 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 comprises the following beneficial effects:
(1) The cold air is gathered through the air collecting box and enters the conveying ring from the air flow one-way check valve, central air outlet is carried out through the air outlet hole of the conveying ring, cold and heat exchange is carried out on the heat preservation cover, integral quenching treatment is carried out on the rotary drum of the coal mill and the heat preservation cover area, and a cold air interlayer is formed, so that the temperature of the rotary drum of the coal mill and the heat preservation cover is greatly reduced, the temperature is prevented from rising continuously, then the carbon dioxide of the cooling section is cooled through the cold air, the carbon dioxide is conveyed from the top end of the discharging pipe to the cooling section, the discharging pipe is covered and flame-retardant, and the cooling is carried out in the rotary drum of the coal mill gradually by matching with the cold air interlayer, so that the cooling treatment is carried out on the discharging pipe gradually, the inside of the coal dust is prevented from rising temperature and the phenomenon of fire is caused, the cold air interlayer surrounds the rotary drum of the coal mill from outside to inside gradually cooling and the carbon dioxide is in flame-retardant and cover fire-extinguishing double fit, and thus the effect and the efficiency of fire-retardant fire-extinguishing of the rotary drum of the coal mill are greatly improved.
(2) Through the arrangement of the blast pipe, the wind power transmission of the initial raw materials can be facilitated, and when the temperature of the discharge pipe is increased, the air supply and cooling treatment can be carried out inside the rotary drum of the coal mill.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic view of a partial structure of a heat insulation cover, a gas collecting tank and a conveying ring of the invention;
FIG. 3 is an enlarged schematic view of the area A of FIG. 2 according to the present invention;
FIG. 4 is a schematic view of a partial structure of a rotating gear and a transfer ring according to the present invention;
fig. 5 is an enlarged view of the area B of fig. 4 according to the present invention.
In the figure: 1. a fixing seat; 2. a rotary drum of the coal mill; 3. a feed pipe; 4. a discharge pipe; 5. a toothed ring; 6. a speed reducing motor; 7. rotating the gear; 8. a thermal insulation cover; 9. a gas collection box; 10. a gas delivery conduit; 11. an air flow conveying mechanism; 111. an airflow one-way check valve; 112. a conveying ring; 113. an air outlet hole; 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 invention is further described below with reference to examples.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention, and it is apparent that the described embodiments are some, but not all, embodiments of the present invention, and all other embodiments obtained by persons of ordinary skill in the art without inventive labor based on the described embodiments of the present invention are included in the scope of protection of the present invention.
The following examples are illustrative of the present invention but are not intended to limit the scope of the invention. The conditions in the examples can be further adjusted according to specific conditions, and simple modifications of the method of the invention under the premise of the conception of the invention are all within the scope of the invention as claimed.
Referring to fig. 1-5, the invention provides a carbon dioxide fire extinguishing device for a cement production and processing coal mill, which comprises two symmetrically distributed fixing seats 1, a coal mill rotary drum 2 is rotationally connected between the two fixing seats 1, a feed pipe 3 communicated with the coal mill rotary drum 2 is arranged inside one fixing seat 1, a discharge pipe 4 communicated with the coal mill rotary drum 2 is arranged inside the other fixing seat 1, a temperature sensor is arranged at the discharge pipe 4, a toothed ring 5 is fixed on the outer surface of the coal mill rotary drum 2, a speed reducing motor 6 is fixed on the outer end surface of the fixing seat 1 close to the toothed ring 5, a rotary gear 7 is coaxially connected with the output end of the speed reducing motor 6, the rotary 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 drum 2, a gas collecting box 9 is arranged on the outer surface of the bottom of the coal mill rotary drum 2 in a fitting mode, two symmetrically distributed gas conveying pipes 10 are respectively communicated with a hot gas conveying mechanism and a cold gas conveying mechanism, a carbon dioxide guide pipe 11 is arranged between the coal mill rotary drum 2 and the heat preservation cover 8, a carbon dioxide guide pipe 12 is arranged at one side of the carbon dioxide guide pipe 12 is electrically connected with a carbon dioxide sensor 12, and a storage tank 13 is arranged at the top surface of the carbon dioxide guide pipe 12, and a storage tank 13 is electrically connected with the carbon dioxide guide pipe 13, and an electromagnetic valve 13 is arranged at the top surface of the position of the carbon dioxide guide pipe is electrically connected with the carbon dioxide guide pipe.
Further, as shown in fig. 2, fig. 4 and fig. 5, it is worth specifically explaining that the airflow conveying mechanism 11 includes a plurality of airflow one-way check valves 111 which are uniformly distributed, the plurality of airflow one-way check valves 111 all fixedly penetrate through the outer surface of the rotary drum 2 of the coal mill, the air outlet end of each airflow 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 insulation cover 8, a plurality of air outlet holes 113 which are uniformly distributed are formed in the surface of the conveying ring 112, which faces the central axis of the heat insulation cover 8, wherein the airflow one-way check valves 111 are used for carrying out one-way communication conveying treatment on the cold air in the air collecting box 9, so that the conveying ring 112 and the air outlet holes 113 cool the cold air in the rotary drum 2 of the coal mill and form a cold air interlayer.
Further, as shown in fig. 1 and fig. 2, it is worth specifically explaining that the outer surface of the rotary drum 2 of the coal mill is in fit with the top surface of the gas collecting box 9, the two sides of the gas collecting box 9 are respectively provided with a sealing ring 14 which is fastened and sleeved on the outer surface of the rotary drum 2 of the coal mill, the tooth-shaped rings 5 are in fit with the opposite surfaces of the adjacent sealing rings 14, wherein the sealing rings 14 further improve the sealing effect on the joint of the gas collecting box 9 and the rotary drum 2 of the coal mill, and limit the tooth-shaped rings 5 to a certain extent.
Further, as shown in fig. 1, 2 and 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 is fixedly penetrating through the gas collecting tank 9, and the cooling section 133 of the carbon dioxide conduit 13 is communicated with the top surface of the discharging pipe 4.
Further, as shown in fig. 1, 2 and 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 tank 9.
The scheme comprises the following working processes: when the temperature sensor detects that the temperature of the discharge pipe 4 of the rotary drum 2 of the coal mill is too high or spontaneous combustion occurs, the temperature sensor transmits an electric signal to the PLC controller, a command is sent by the PLC controller, the speed reducing motor 6 stops processing, the air flow one-way check valve 111 is positioned in the air collecting box 9, the air conveying pipe 10 for conveying hot air is closed, the air conveying pipe 10 for conveying cold air is opened at the same time, the cold air is gathered through 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, heat exchange is carried out on the heat preservation cover 8, and the whole quenching processing is carried out on the rotary drum 2 of the coal mill and the heat preservation cover 8 to form a cold air interlayer, so that the temperature of the rotary drum 2 of the coal mill and the heat preservation cover 8 is greatly reduced, and the temperature is prevented from continuously rising;
after the air conveying pipe 10 conveys cold air for 3min, the carbon dioxide storage tank 12 is controlled by the PLC to be opened, carbon dioxide is discharged from the discharging section 131 through the carbon dioxide pipe 13, the carbon dioxide of the cooling section 132 is cooled through the cold air in the air collecting box 9, then the carbon dioxide is conveyed from the top end of the discharging pipe 4 to the cooling section 133, the discharging pipe 4 is covered and flame-retardant, the covering and flame-retardant are carried out, the inside of the coal mill rotary drum 2 is gradually cooled through the cold air interlayer, the cooling treatment is gradually carried out on the discharging pipe 4, the inside of coal dust is gradually cooled, and the internal temperature rise of the coal dust and the phenomenon of dark fire are prevented.
The working process can be as follows: the cold air is gathered through 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 preservation cover 8, integral quenching treatment is carried out on the areas of the rotary drum 2 and the heat preservation cover 8 of the coal mill, and a cold air interlayer is formed, so that the temperature of the rotary drum 2 and the heat preservation cover 8 of the coal mill is greatly reduced, the temperature is prevented from rising continuously, then the carbon dioxide of the cooling section 132 is cooled through the cold air, the carbon dioxide is conveyed from the top end of the discharging pipe 4 to reach the cooling section 133, the position of the discharging pipe 4 is covered and flame-retardant, and the position of the discharging pipe 4 is gradually cooled by being matched with the cold air interlayer, so that the position of the discharging pipe 4 is gradually cooled, the inside of the coal dust is gradually cooled, the internal temperature of the coal dust is prevented from rising, and the phenomenon of dark fire exists, the cold air interlayer surrounds the dual cooperation of the fire extinguishing effect and the fire extinguishing effect of the fire extinguishing coal mill from outside to inside, and the fire extinguishing effect of the fire extinguishing fire is greatly improved.
Further, as shown in fig. 1 and fig. 2, it is worth specifically explaining that the top surface of the feeding pipe 3 is communicated with the air supply pipe 15, the air supply pipe 15 is obliquely arranged on the top surface of the feeding pipe 3, and the air supply pipe 15 is arranged, so that the initial raw materials can be conveniently conveyed by wind power, and the air supply and cooling treatment can be performed inside the rotary drum 2 of the coal mill.
The application method of the carbon dioxide fire extinguishing equipment for the cement production and processing coal mill comprises the following steps:
s1, quenching the heat preservation cover 8: the PLC controller transmits an electric signal to one side of the gas collection box 9 through the temperature sensor, the PLC controller sends an instruction, the speed reducing motor 6 stops processing, the air flow one-way check valve 111 is positioned in the gas collection box 9, the air transmission pipe 10 for conveying hot air is closed, the air transmission pipe 10 for conveying cold air is opened at the same time, the cold air is collected through the gas collection 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 preservation cover 8, and integral quenching processing is carried out on the region of the rotary drum 2 of the coal mill and the heat preservation cover 8;
s2, carbon dioxide covering and flame retarding of the discharging pipe 4: in the step S1, after the air delivery conduit 10 delivers cold air for 3min, the PLC controller controls the carbon dioxide storage tank 12 to be opened, carbon dioxide is discharged from the discharging section 131 through the carbon dioxide conduit 13, the carbon dioxide of the cooling section 132 is cooled through the cold air in the air collection box 9, and then the cooling section 133 delivers carbon dioxide from the top end of the discharging pipe 4, so that the position of the discharging pipe 4 is covered and flame-retardant;
s3, air supply and cooling of the feeding pipe 3: in the step S2, when the carbon dioxide storage tank 12 covers and retards the flame of carbon dioxide conveyed at the discharge pipe 4 without open flame and the temperature keeps falling, the blast pipe 15 at the top end of the feeding pipe 3 is conveyed with cold air, and the front end of the feeding pipe 3 of the rotary drum 2 of the coal mill is cooled until the temperature difference between the inside and the outside of the heat preservation cover 8 is consistent.
Specifically, in the step S3, when the air supply pipe 15 is used for conveying cold air, the rotary drum 2 of the coal mill is driven by the speed reducing motor 6 to rotate slowly, the outer surface of the rotary drum 2 of the coal mill and the cold air in the air collecting box 9 are subjected to uniform heat exchange treatment, and after the surface of the rotary drum 2 of the coal mill is cooled greatly, the rotary drum 2 of the coal mill can be rotated slowly, so that the surface of the rotary drum 2 of the coal mill is uniformly cooled.
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 that the description is not repeated.
Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs, the terms "comprising" or "comprises" and the like as used herein shall mean that the element or article preceding the term encompasses the element or article listed after the term and equivalents thereof without excluding other elements or articles, and that the terms "connected" or "connected" and the like shall not be limited to physical or mechanical connections, but shall also include electrical connections, whether direct or indirect, "upper", "lower", "left", "right", etc. are merely intended to indicate relative positional relationships that may also be correspondingly altered when the absolute position of the object being described is altered.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a carbon dioxide fire extinguishing apparatus for cement manufacture coal mill, includes two fixing bases (1) that are symmetrical distribution, two rotate between fixing bases (1) and be connected with coal mill rotary drum (2), its characterized in that, one of them the inside of fixing base (1) is provided with inlet pipe (3) with coal mill rotary drum (2) intercommunication, another the inside of fixing base (1) is provided with discharging pipe (4) with coal mill rotary drum (2) intercommunication, the surface mounting of coal mill rotary drum (2) has profile of tooth circle (5), is close to the fixing base (1) outer terminal surface of profile of tooth circle (5) is fixed with gear motor (6), the output coaxial coupling of gear (7) of gear (6), gear (7) with the engagement of profile of tooth circle (5) is connected, the inner wall of coal mill rotary drum (2) is fixed with heat preservation cover (8), the bottom surface of coal mill rotary drum (2) is provided with gas collection box (9), the outer terminal surface mounting of gas collection box (9) is equipped with profile of tooth circle (10) is equipped with gas transmission mechanism (10) between two profile of tooth circle (5) and gas transmission mechanism (10), a carbon dioxide guide pipe (13) is communicated between the top surface of the carbon dioxide storage tank (12) and the discharge pipe (4);
the air flow conveying mechanism (11) comprises a plurality of air flow one-way check valves (111) which are uniformly distributed, the air flow one-way check valves (111) are fixedly penetrated through the outer surface of the rotary drum (2) of the coal mill, the air outlet end of each air flow one-way check valve (111) is communicated with a conveying ring (112), the outer surface of the heat preservation cover (8) is fixedly sleeved with the conveying ring (112), and a plurality of air outlet holes (113) which are uniformly distributed are formed in the surface of the conveying ring (112) facing the central axis of the heat preservation cover (8);
carbon dioxide pipe (13) are including being ejection of compact section (131), cooling section (132) and cooling section (133) that communicate in proper order, the cooling section (132) of carbon dioxide pipe (13) are fixed run through gas collection case (9), cooling section (133) of carbon dioxide pipe (13) with the top surface intercommunication of discharging pipe (4).
2. A carbon dioxide fire suppression apparatus for a cement production and processing coal mill according to claim 1, characterized in that: the outer surface of the coal mill rotary cylinder (2) is in fit with the top surface of the gas collection box (9), sealing rings (14) which are fixedly sleeved on the outer surface of the coal mill rotary cylinder (2) are arranged on two sides of the gas collection box (9), and the tooth-shaped rings (5) are in fit with the opposite surfaces of the adjacent sealing rings (14).
3. A carbon dioxide fire suppression apparatus for a cement production and processing coal mill according to claim 1, characterized in that: the discharging section (131), the cooling section (132) and the cooling section (133) of the carbon dioxide guide pipe (13) are all L-shaped, and two ends of the cooling section (132) of the carbon dioxide are respectively positioned on the end face and the adjacent side face of the gas collecting tank (9).
4. A carbon dioxide fire suppression apparatus for a cement production and processing coal mill according to claim 1, characterized in that: the top surface of inlet pipe (3) communicates there is blast pipe (15), blast pipe (15) are the slope and set up in the top surface of inlet pipe (3).
5. A method of using the carbon dioxide fire suppression apparatus for a cement production process coal mill according to any one of claims 1 to 4, characterized in that: the method comprises the following steps:
s1, quenching the heat preservation cover (8): the PLC transmits an electric signal to one side of the gas collecting box (9) through the temperature sensor, the PLC sends an instruction, the speed reducing motor (6) stops for treatment, the airflow one-way check valve (111) is positioned in the gas collecting box (9), the gas conveying pipe (10) for conveying hot gas is closed, the gas conveying pipe (10) for conveying cold gas is opened at the same time, the cold gas is gathered through the gas collecting box (9) and enters the conveying ring (112) from the inside of the airflow one-way check valve (111), central gas outlet is carried out through the gas outlet hole (113) of the conveying ring (112), cold and heat exchange is carried out on the heat preservation cover (8), and the whole quenching treatment is carried out on the region of the rotary drum (2) of the coal mill and the heat preservation cover (8);
s2, carbon dioxide covering and flame retarding of a discharging pipe (4): after the air delivery duct (10) delivers cold air 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 discharging section (131) through the carbon dioxide duct (13), the carbon dioxide of the cooling section (132) is cooled through the cold air in the air collection box (9), and then the cooling section (133) delivers carbon dioxide from the top end of the discharging pipe (4), and the discharging pipe (4) is covered and flame-retardant;
s3, air supply and cooling of the feeding pipe (3): in the step S2, when the carbon dioxide storage tank (12) is used for conveying carbon dioxide at the discharge pipe (4) for covering flame retardation, no open fire exists and the temperature keeps falling, cold air conveying is carried out on the air supply pipe (15) at the top end of the feed pipe (3), and cooling treatment is carried out on the front end of the feed pipe (3) of the rotary drum (2) of the coal mill until the temperature difference between the inside and the outside of the heat preservation cover (8) is consistent.
6. The method for using the carbon dioxide fire extinguishing equipment for the cement production and processing coal mill according to claim 5, wherein the method comprises the following steps: in the step S3, when the blast pipe (15) carries out cold air conveying, the rotary drum (2) of the coal mill rotates slowly through the driving of the gear motor (6), and the outer surface of the rotary drum (2) of the coal mill and cold air in the air collection box (9) are subjected to uniform heat exchange treatment.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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 |
|---|---|---|---|
| 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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| CN115531766A CN115531766A (en) | 2022-12-30 |
| CN115531766B true CN115531766B (en) | 2023-08-25 |
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| CN202211161329.7A Active CN115531766B (en) | 2022-09-22 | 2022-09-22 | Carbon dioxide fire extinguishing equipment for cement production and processing coal mill |
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| 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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| US9604226B2 (en) * | 2012-05-01 | 2017-03-28 | Innovative Combustion Technologies, Inc. | Pulverizer mill protection system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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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