CN111013074A - Full-automatic fire extinguishing and purifying equipment - Google Patents

Full-automatic fire extinguishing and purifying equipment Download PDF

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Publication number
CN111013074A
CN111013074A CN201911293924.4A CN201911293924A CN111013074A CN 111013074 A CN111013074 A CN 111013074A CN 201911293924 A CN201911293924 A CN 201911293924A CN 111013074 A CN111013074 A CN 111013074A
Authority
CN
China
Prior art keywords
fire extinguishing
smoke
harmful gas
dry powder
full
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201911293924.4A
Other languages
Chinese (zh)
Inventor
罗赛
管志文
韩超
邢时超
聂士斌
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Anhui University of Science and Technology
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Anhui University of Science and Technology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Anhui University of Science and Technology filed Critical Anhui University of Science and Technology
Priority to CN201911293924.4A priority Critical patent/CN111013074A/en
Publication of CN111013074A publication Critical patent/CN111013074A/en
Pending legal-status Critical Current

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    • AHUMAN NECESSITIES
    • A62LIFE-SAVING; FIRE-FIGHTING
    • A62CFIRE-FIGHTING
    • A62C37/00Control of fire-fighting equipment
    • A62C37/36Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device
    • A62C37/38Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device by both sensor and actuator, e.g. valve, being in the danger zone
    • A62C37/40Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device by both sensor and actuator, e.g. valve, being in the danger zone with electric connection between sensor and actuator
    • AHUMAN NECESSITIES
    • A62LIFE-SAVING; FIRE-FIGHTING
    • A62CFIRE-FIGHTING
    • A62C31/00Delivery of fire-extinguishing material
    • A62C31/02Nozzles specially adapted for fire-extinguishing
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/30Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/32Responding to malfunctions or emergencies
    • F24F11/33Responding to malfunctions or emergencies to fire, excessive heat or smoke
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/70Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/16Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by purification, e.g. by filtering; by sterilisation; by ozonisation
    • GPHYSICS
    • G08SIGNALLING
    • G08BSIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00Fire alarms; Alarms responsive to explosion
    • G08B17/10Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
    • GPHYSICS
    • G08SIGNALLING
    • G08BSIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00Fire alarms; Alarms responsive to explosion
    • G08B17/12Actuation by presence of radiation or particles, e.g. of infrared radiation or of ions
    • G08B17/125Actuation by presence of radiation or particles, e.g. of infrared radiation or of ions by using a video camera to detect fire or smoke
    • GPHYSICS
    • G08SIGNALLING
    • G08BSIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/02Alarms for ensuring the safety of persons
    • G08B21/12Alarms for ensuring the safety of persons responsive to undesired emission of substances, e.g. pollution alarms
    • G08B21/16Combustible gas alarms
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00Control inputs relating to air properties
    • F24F2110/50Air quality properties
    • F24F2110/65Concentration of specific substances or contaminants
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00Control inputs relating to air properties
    • F24F2110/50Air quality properties
    • F24F2110/65Concentration of specific substances or contaminants
    • F24F2110/72Carbon monoxide

Abstract

The invention discloses full-automatic fire extinguishing and purifying equipment and a using method thereof. When the sensor detects that the environment-related data is abnormal, the intelligent control system controls the automatic tracking and positioning jet device and the dust removal and harmful gas purification system to start, so that fire hazard is eliminated, and smoke dust and harmful gas are purified. Dust removal and harmful gas clean system can carry out the primary filter to the large granule pollutant that contains in the smoke and dust, lets the smoke and dust carry out deep purification through gas purification room again. The intelligent fire extinguishing system has the function of intelligently monitoring the environment, is high in automation degree, can be used for extinguishing different types of fire under different scenes, has the function of purifying fire smoke, and is high in practicability.

Description

Full-automatic fire extinguishing and purifying equipment
Technical Field
The invention relates to the technical field of fire fighting devices, in particular to full-automatic fire extinguishing and purifying equipment.
Background
The fire hazard is one of the most persistent and violent disasters which endanger human beings, not only can threaten the lives and properties of people, but also can destroy precious and limited natural resources which human beings rely on for survival, and in addition, the fire hazard can cause environmental pollution to a certain extent and cause ecological imbalance. The harm caused by fire is particularly obvious today when the material wealth is more and more concentrated and the population density is more and more large. According to investigation and research, the factors of burning and smashing due to the action of external force in the fire accident, and most casualties can be attributed to factors such as smoke dust, temperature and the like in the fire scene.
Today's fire alarm devices are diversified and the disadvantages of the existing devices are: the automatic level is not high, the function is single, the fire extinguishing range is small, and flexible fire extinguishing is difficult to realize in a targeted manner. And the existing fire extinguishing device only acts on open fire and can not reduce or absorb smoke dust and harmful gas brought by fire.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides full-automatic fire extinguishing and purifying equipment, which solves the problems that the existing equipment is low in automation level, single in function, small in fire extinguishing range and difficult to realize flexible fire extinguishing pertinently.
In order to solve the technical problems and achieve the technical effects, the invention provides the following technical scheme:
a full-automatic fire extinguishing and purifying device comprises a water storage tank, a dry powder tank, a special fire extinguishing agent tank, a dust removal and harmful gas purification system, an automatic tracking and positioning jet device, a dry powder electromagnetic nozzle, a smoke sensor, a flame sensor, a camera, an alarm and a miniature intelligent control system.
The dust removal and harmful gas purification system comprises an air suction fan, a flue gas cooling chamber, a HEPA primary filter device, a CO absorption chamber, a CO concentration detector, a small air pump and an electromagnetic valve.
Furthermore, the water storage tank, the dry powder tank and the special fire extinguishing agent tank are all provided with electromagnetic valves, and the opening and the closing of the water storage tank, the dry powder tank and the special fire extinguishing agent tank can be controlled by a micro intelligent control system.
Furthermore, the miniature intelligent control system can be remotely controlled by a mobile phone end, so that the switching of the fire extinguishing agent used by the equipment in the fire extinguishing process is completed.
Furthermore, a water outlet of the water storage tank is connected with an automatic tracking and positioning jet device through a spring pipe; and a dry powder outlet of the dry powder tank is connected with a dry powder electromagnetic spray head through a dry powder guide pipe.
Furthermore, the miniature intelligent control system is connected with the smoke sensor, the flame sensor, the dedusting and harmful gas purification system, the automatic tracking and positioning jet device, the water storage tank electromagnetic valve, the dry powder tank electromagnetic valve and the special fire extinguishing agent tank electromagnetic valve through leads.
Furthermore, the smoke sensor and the flame sensor feed back data measured in the environment to the micro intelligent control system, if a fire source is monitored, the electromagnetic valve of the water storage tank is opened, and water flows through the spring pipe and is sprayed to the fire source from the automatic tracking and positioning jet device; if the concentration of the smoke dust or the concentration of CO exceeds the standard, the dust removal and harmful gas purification system is automatically started, and the air suction fan is operated to purify the smoke dust containing harmful gas through the system.
Furthermore, in the dust removal and harmful gas purification system, after the fire smoke containing harmful gas is sucked into the smoke cooling chamber by the air suction fan, large-particle pollutants mixed in smoke dust are removed through the HEPA primary filter device, then the smoke is deeply purified through the CO absorption chamber, and the harmful gas CO contained in the smoke is efficiently removed.
Further, dust removal and harmful gas clean system gas vent install CO concentration detector, when still exceeding standard in the gas that purifies the completion harmful gas concentration, the gas vent solenoid valve is closed, inhales the fan and stops the operation, and small-size air extractor will purify substandard gas and take back CO absorption chamber, and clean system carries out secondary purification to gas, will purify the flue gas exhaust clean system who finishes after reducing to the safe value until harmful gas concentration.
Furthermore, in the dust removal and harmful gas purification system, the absorption liquid in the CO absorption chamber is CuCl-MgCl2And (3) solution.
Furthermore, the water storage tank, the dry powder tank and the special fire extinguishing agent tank are all fixed on the equipment through fixing devices, and the water storage tank, the dry powder tank and the special fire extinguishing agent tank are all made of corrosion-resistant high-quality alloy steel.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the full-automatic fire extinguishing and purifying equipment, the environmental condition of the equipment can be monitored in real time through the smoke sensor, the flame sensor and the CO concentration detector, people can be reminded of evacuating in time through the alarm, and the environmental condition can be remotely transmitted to the mobile phone end or the computer end through the camera.
2. The invention provides a full-automatic fire extinguishing and purifying device which is provided with a special fire extinguishing agent tank besides a water storage tank and a dry powder tank which are suitable for extinguishing A-type, B-type and C-type fires, and special agents which can be used for extinguishing C, E-type fires can be put into the device according to practical application scenes.
3. According to the full-automatic fire extinguishing and purifying equipment, when the concentration of smoke dust and CO in the environment exceeds the standard, the system is automatically started to purify gas. The exhaust port of the purification system is provided with a CO concentration detector, and when the concentration of harmful gas in the purified smoke dust still exceeds the standard, the system can carry out secondary purification on the gas which does not reach the standard until the concentration of the harmful gas is reduced to a safe value.
4. The fire extinguishing device has high automation degree, is suitable for extinguishing different types of fire under different scenes, can purify harmful gas and smoke dust generated by the fire, and has strong practicability.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of the overall structure of a fully automatic fire extinguishing and purifying apparatus according to the present invention;
fig. 2 is a schematic structural view of a local dust removal and harmful gas purification system of the full-automatic fire extinguishing and purifying device of the invention.
Description of reference numerals:
1. a water storage tank; 2. a dry powder tank; 3. a special fire suppressant tank; 4. a dust removal and harmful gas purification system; 4-1, an air suction fan; 4-2, a flue gas cooling chamber; 4-3, an HEPA primary filter device; 4-4, a CO absorption chamber; 4-5, a CO concentration detector; 4-6, a small air extractor; 4-7, an electromagnetic valve; 5. an automatic tracking and positioning jet device; 6. a dry powder electromagnetic spray head; 7. a smoke sensor; 8. a flame sensor; 9. a camera; 10. an alarm; 11. miniature intelligent control system.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 and 2: a full-automatic fire extinguishing and purifying device comprises a water storage tank 1, a dry powder tank 2, a special fire extinguishing agent tank 3, a dust removing and harmful gas purifying system 4, an automatic tracking and positioning jet device 5, a dry powder electromagnetic spray head 6, a smoke sensor 7, a flame sensor 8, a camera 9, an alarm 10 and a miniature intelligent control system 11, wherein the dust removing and harmful gas purifying system 4 comprises an air suction fan 4-1, a smoke cooling chamber 4-2, an HEPA primary filter device 4-3, a CO absorption chamber 4-4, a CO concentration detector 4-5, a miniature air pump 4-6 and an electromagnetic valve 4-7, and the water storage tank 1, the dry powder tank 2 and the special fire extinguishing agent tank 3 are all provided with electromagnetic valves which can be controlled to be opened and closed by the miniature intelligent control system; the miniature intelligent control system 11 is connected with the smoke sensor 7, the flame sensor 8, the dedusting and harmful gas purification system 4, the automatic tracking and positioning jet device 5, the water storage tank 1 electromagnetic valve, the dry powder tank 2 electromagnetic valve and the special fire extinguishing agent tank 3 electromagnetic valve through leads.
Specifically, the miniature intelligent control system 11, the smoke sensor 7 and the flame sensor 8 are in working states all the time, and the environment condition of the equipment is monitored; the sensors feed back data measured by the environment to the miniature intelligent control system 11. If a fire source is detected, the electromagnetic valve of the water tank is opened, and water flows through the spring tube and is sprayed to the fire source from the automatic tracking and positioning jet device 5. Simultaneously, the alarm is reported to the police, and the camera is with the environmental aspect remote transmission to cell-phone end or computer end that equipment is located, and the staff can see the conflagration condition near the equipment in real time, according to the type of the conflagration that will put out, can carry out remote control miniature intelligent control system through the cell-phone end to this accomplishes the switching of equipment in the fire extinguishing process used fire extinguishing agent. If the concentration of the environmental smoke and the concentration of CO exceed the standard, the dust removal and harmful gas purification system 4 is automatically started, and the air suction fan 4-1 is operated, so that the smoke containing the harmful gas is purified by the system. When the fire hazard is eliminated and the smoke and dust are purified, the dust removal and harmful gas purification system 4 and the automatic tracking and positioning jet device 5 are closed, the smoke sensor 7 and the flame sensor 8 continue to work, the environment where the equipment is located is constantly monitored, and data are fed back to the micro intelligent control system 11.
The above description is only intended to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (10)

1. The utility model provides a full-automatic fire extinguishing and purifying equipment which characterized in that: comprises a water storage tank (1), a dry powder tank (2), a special fire extinguishing agent tank (3), a dust removal and harmful gas purification system (4), an automatic tracking and positioning jet device (5), a dry powder electromagnetic nozzle (6), a smoke sensor (7), a flame sensor (8), a camera (9), an alarm (10) and a micro intelligent control system (11);
the dust removal and harmful gas purification system (4) comprises an air suction fan (4-1), a flue gas cooling chamber (4-2), a HEPA primary filter device (4-3), a CO absorption chamber (4-4), a CO concentration detector (4-5), a small air pump (4-6) and an electromagnetic valve (4-7).
2. The full-automatic fire extinguishing and purifying equipment according to claim 1, characterized in that: the water storage tank (1), the dry powder tank (2) and the special fire extinguishing agent tank (3) are all provided with electromagnetic valves, and can be controlled to be opened and closed by a micro intelligent control system (11).
3. The full-automatic fire extinguishing and purifying equipment according to claim 1, characterized in that: the miniature intelligent control system (11) can be remotely controlled by a mobile phone end, so that the switching of the fire extinguishing agent used by the equipment in the fire extinguishing process is completed.
4. The full-automatic fire extinguishing and purifying equipment according to claim 1, characterized in that: the water outlet of the water storage tank (1) is connected with an automatic tracking and positioning jet device (5) through a spring pipe; and a dry powder outlet of the dry powder tank (2) is connected with a dry powder electromagnetic spray head (6) through a dry powder conduit.
5. The full-automatic fire extinguishing and purifying equipment according to claim 1, characterized in that: the miniature intelligent control system (11) is connected with the smoke sensor (7), the flame sensor (8), the dust removal and harmful gas purification system (4), the automatic tracking and positioning jet device (5), the water storage tank (1) electromagnetic valve, the dry powder tank (2) electromagnetic valve and the special fire extinguishing agent tank (3) electromagnetic valve through leads.
6. The full-automatic fire extinguishing and purifying equipment according to claim 1, characterized in that: the smoke sensor (7) and the flame sensor (8) feed back data measured in the environment to the micro intelligent control system (11), if a fire source is monitored, the electromagnetic valve of the water storage tank (1) is opened, and water flows through the spring pipe and is sprayed to the fire source from the automatic tracking and positioning jet device (5); if the concentration of the smoke dust and the concentration of CO exceed the standard, the dust removal and harmful gas purification system (4) is automatically started, and the air suction fan (4-1) is operated to purify the smoke dust containing harmful gas through the system.
7. The full-automatic fire extinguishing and purifying equipment according to claim 1, characterized in that: in the dust removal and harmful gas purification system (4), after fire smoke containing harmful gas enters the smoke cooling chamber (4-2) through the air suction fan (4-1), large-particle pollutants mixed in smoke dust are removed through the HEPA primary filter device (4-3), then the smoke is deeply purified through the CO absorption chamber (4-4), and harmful gas CO contained in the smoke is efficiently removed.
8. The full-automatic fire extinguishing and purifying equipment according to claim 1, characterized in that: the gas exhaust port of the dust removal and harmful gas purification system (4) is provided with a CO concentration detector (4-5), when the concentration of harmful gas in the purified gas still exceeds the standard, the electromagnetic valve (4-7) of the gas exhaust port is closed, the suction fan (4-1) stops running, the small air pump (4-6) pumps the gas which is not purified to the standard back to the CO absorption chamber (4-4), and the purification system carries out secondary purification on the gas until the concentration of the harmful gas is reduced to a safe value and then discharges the purified gas out of the purification system.
9. A fully automatic fire suppression system as claimed in claim 1Clarification plant, its characterized in that: the absorption liquid in the CO absorption chamber (4-4) is CuCl-MgCl2And (3) solution.
10. The full-automatic fire extinguishing and purifying equipment according to claim 1, characterized in that: the water storage tank (1), the dry powder tank (2) and the special fire extinguishing agent tank (3) are all fixed on equipment through fixing devices, and the water storage tank (1), the dry powder tank (2) and the special fire extinguishing agent tank (3) are all made of corrosion-resistant high-quality alloy steel.
CN201911293924.4A 2019-12-16 2019-12-16 Full-automatic fire extinguishing and purifying equipment Pending CN111013074A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201911293924.4A CN111013074A (en) 2019-12-16 2019-12-16 Full-automatic fire extinguishing and purifying equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201911293924.4A CN111013074A (en) 2019-12-16 2019-12-16 Full-automatic fire extinguishing and purifying equipment

Publications (1)

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CN111013074A true CN111013074A (en) 2020-04-17

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112396792A (en) * 2020-10-14 2021-02-23 北京市地铁运营有限公司地铁运营技术研发中心 Subway escalator pit fire monitoring and processing system and method
CN112535824A (en) * 2020-12-07 2021-03-23 安徽金鑫实验设备科技有限公司 Laboratory is with emergent extinguishing device that drenches
CN112742141A (en) * 2020-12-09 2021-05-04 科大讯飞股份有限公司 Dust-fall purification equipment and dust-fall purification method
CN113599752A (en) * 2021-07-19 2021-11-05 常州机电职业技术学院 Automatic change extinguishing device for industrial production workshop
CN114485792A (en) * 2022-01-21 2022-05-13 国网山东省电力公司济南供电公司 Device and method for monitoring fire condition of cable intermediate joint in cable trench
CN115192950A (en) * 2022-07-12 2022-10-18 侯添木 Intelligent fire extinguishing and smoke filtering system method
RU2811222C1 (en) * 2023-09-08 2024-01-11 Акционерное общество "Научно-исследовательское проектно-технологическое бюро "Онега" (АО "НИПТБ "Онега") Method for purifying air in confined space

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US4433985A (en) * 1981-12-21 1984-02-28 Mcgee Terrill A Air scrubbing and purifying system
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CN208049229U (en) * 2017-12-28 2018-11-06 徐州鑫科机器人有限公司 A kind of firefighting fire extinguishing robot for smoke evacuation
CN109045528A (en) * 2018-07-25 2018-12-21 江苏源控全程消防有限公司 A kind of fire-fighting robot
CN209333075U (en) * 2018-12-19 2019-09-03 天津众鼎机电工程有限公司 A kind of household fire-fighting equipment promoting protection

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CN104089360A (en) * 2014-07-16 2014-10-08 公安部上海消防研究所 Automatic smoke exhaust device for large-space building catching fire
CN104399328A (en) * 2014-12-01 2015-03-11 江苏溧竹环境工程有限公司 Exhaust fume filtering device
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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112396792A (en) * 2020-10-14 2021-02-23 北京市地铁运营有限公司地铁运营技术研发中心 Subway escalator pit fire monitoring and processing system and method
CN112535824A (en) * 2020-12-07 2021-03-23 安徽金鑫实验设备科技有限公司 Laboratory is with emergent extinguishing device that drenches
CN112742141A (en) * 2020-12-09 2021-05-04 科大讯飞股份有限公司 Dust-fall purification equipment and dust-fall purification method
CN113599752A (en) * 2021-07-19 2021-11-05 常州机电职业技术学院 Automatic change extinguishing device for industrial production workshop
CN114485792A (en) * 2022-01-21 2022-05-13 国网山东省电力公司济南供电公司 Device and method for monitoring fire condition of cable intermediate joint in cable trench
CN115192950A (en) * 2022-07-12 2022-10-18 侯添木 Intelligent fire extinguishing and smoke filtering system method
RU2811222C1 (en) * 2023-09-08 2024-01-11 Акционерное общество "Научно-исследовательское проектно-технологическое бюро "Онега" (АО "НИПТБ "Онега") Method for purifying air in confined space

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