55results about How to "Fire extinguishing effect" patented technology

The invention relates to the technical field of fire protection of power distribution cabinets, in particular to a high-voltage power distribution cabinet with a fire extinguishing device, which includes a box body, a switch door is provided on one side of the box body, and the switch door is rotatably connected to the box body through a hinge. Above, the controller is connected to the smoke sensor, the controller is connected to the switch valve inside the pipeline, the two side walls adjacent to the switch door of the box body are provided with several ventilation holes, and the rotating shaft is horizontal placed, and the two ends of the rotating shaft are rotatably connected to the first U-shaped support plate. Placed in the cavity, the end of the fireproof cloth is fixed with an iron block, the iron block is adsorbed on the electromagnet, the electromagnet is placed on the side wall of the cavity, and the electromagnet and the controller connect. The invention can effectively extinguish the fire, effectively prevent the expansion of the fire, and prevent the damage of more instruments.

The invention discloses a fire extinguishing floor. The fire extinguishing floor comprises a floor body, wherein a cavity is formed in the floor body, a partition plate is hermetically and fixedly connected to the inner wall of the cavity, the partition plate divides the cavity from top to bottom into a liquid storage cavity and a reaction cavity, a HCl solution is contained in the liquid storagecavity, CaCO3 particles are placed in the reaction cavity, and a plurality of temperature sensing triggering devices are arranged on the inner top wall of the liquid storage cavity at equal intervalsfrom left to right; the temperature sensing triggering devices comprise top grooves formed in the inner top wall of the liquid storage cavity, annular limiting grooves are formed in the inner walls ofthe top grooves, limiting plates are hermetically and slidably connected in the limiting grooves in the vertical direction, and the limiting grooves, the top grooves and the limiting plates jointly form an expansion cavity. The fire extinguishing floor has the advantages that combustible materials are isolated from oxygen, the fire extinguishing effect is achieved, so that the fire spreading is restrained, and the property of residents is protected; the CO2 flowing through an air injection channel can " blow " an alarm whistle to remind the residents to fight fire or withdraw in time, and thesituation of casualties of the residents caused by untimely fire discovering or withdrawing is avoided.

The invention discloses an extinguishing device for a tall building roof, mainly comprising a water storage tank (2) arranged a roof plane (1), a firefighting pump (3) communicated with the inside of the water storage tank (2) and a long-arm fire monitor (4) connected with the firefighting pump (3). By using the extinguishing device, the problem that fire extinguishment in a tall building and a super-tall building can be well solved. The extinguishing device has unique function and remarkable advantage of extinguishing fire in the tall building.

The invention discloses a gas-liquid mixed fire extinguishing bomb, which comprises a shell, a water injection plug, a stabilizing rope and a counter weight, wherein the shell is a hollow body with closed cavity, wherein the hollow body is manufactured by seaming a fireproof material and a fireproof material or a combustible material through combustible seaming lines; the bottom of the shell is provided with the water injection plug; a micro explosive cartridge is arranged on the shell; the bottom of the shell is connected with the upper end of the stabilizing rope; and the lower end of the stabilizing rope is connected with the counter weight. The invention provides the fire extinguishing bomb which is suitable for high-rise buildings and has good adaptability.

The invention relates to a power cabinet convenient for remote monitoring, and relates to the technical field of power cabinets, the power cabinet comprises a cabinet body and a cabinet door, a fire extinguishing assembly, an exhaust assembly, a sealing assembly and a control assembly are arranged in the cabinet body, and the control assembly comprises a smoke sensor arranged in the cabinet body and a controller electrically connected with the smoke sensor; the fire extinguishing assembly comprises a fire extinguishing tank arranged in the cabinet body and an electromagnetic valve arranged onthe fire extinguishing tank, the fire extinguishing tank is filled with flame-retardant gas, and the air pressure in the fire extinguishing tank is larger than the standard atmospheric pressure. Whenthe smoke sensor detects that smoke is generated in the cabinet body, a trigger signal is output, and the controller is electrically connected with the electromagnetic valve to receive and respond tothe trigger signal to control the electromagnetic valve to be opened. The fire extinguishing device has the effect of protecting other electrical elements during fire extinguishing so as to reduce property loss.

The invention discloses an explosion prevention and fire extinction testing device for a lithium ion battery. The device comprises a base 2 and a protective shell 9, and is improved in a way that a battery 1 is arranged between the base 2 and a cavity of the protective shell 9, and the cathode and the anode 14 of the battery are connected with testing terminals 12 on charging and discharging test lines 3; the base 2 is provided with a temperature controlled switch 4 which comprises a temperature sensor 6 and a signal line 5; the temperature sensor 6 is connected with the lithium ion battery 1. According to the explosion prevention and fire extinction testing device for the lithium ion battery, a high-temperature abnormal phenomenon can be timely sensed, a circuit can be timely, rapidly and effectively broken to reduce the temperature of the battery, and meanwhile, inert gas can be emitted to isolate the battery, so that the lithium ion battery can be prevented from being exploded and burnt due to high temperature.

The invention relates to an AB type aqueous fire extinguisher which comprises a simple fire extinguishing container and an aqueous fire extinguishing agent packaged in the simple fire extinguishing container. The aqueous fire extinguishing agent comprises a component 1 and a component 2, the component 1 is water, and the component 2 is a main fire extinguishing agent body. The main fire extinguishing agent body is composed of, by weight, 8-20 parts of ammonium chloride, 5-15 parts of carbonate, 13-30 parts of diammonium hydrogen phosphate and 1-15 parts of bicarbonate. The aqueous fire extinguishing agent is packaged in the impact damage type container or the pressure storage type spraying container and made into manual casting type fire extinguishing liquid bombs or fire extinguishing mist spray, the fire extinguishing speed is high, and instant fire extinguishment can be achieved. The AB type aqueous fire extinguisher is small in size, low in weight, convenient to carry and low in cost, fire extinguishment can be achieved rapidly during a quite short period of time for A type fire disasters and B type disasters, reburning is avoided, the safety is high, an operation method is simple, and the AB type aqueous fire extinguisher is suitable for people of all ages to use and can serve as a simple standing fire extinguishing tool for homes, offices and the like.

The invention provides an anti-burn and anti-distortion cable based on flame-retardant inert gas, and relates to the technical field of cables. The invention discloses an anti-burn and anti-distortioncable based on flame-retardant inert gas. The device comprises an outer package, an inner cavity is formed in the outer package, a first fireproof coating is fixedly installed on the inner side of the outer package, an inner package is fixedly installed in the outer package, a connecting rod is fixedly connected between the inner package and the outer package, and a second fireproof coating is fixedly installed on the periphery of the inner package. The invention discloses an anti-burn and anti-distortion cable based on flame-retardant inert gas. Concentrated heating of internal wires is avoided, torsion generated by twisting can be buffered, the phenomenon that the wires are broken due to long-time excessive twisting is avoided, internal filling materials are saved, the flexibility of the cable is improved, the effect of fire on the cable is relieved, fusing of the internal wires is relieved, and time is bought for cutting off a cable power source.

The invention provides a temperature protection structure with over-temperature protection and fire extinguishing functions and a protection method. The temperature protection structure comprises a thermosensitive sealing bag and a fire extinguishing medium packaged in the thermosensitive sealing bag; the upper end part of the thermosensitive sealing bag is provided with a plurality of electric connecting sheets used for being connected with a battery module in series; safety elastic sheets are arranged between the plurality of electric connecting sheets; when the temperature of the thermosensitive sealing bag rises, the fire extinguishing medium expands to enable the safety elastic sheets to bounce, and connection between the safety elastic sheets and the electric connecting sheets is cut off. The temperature protection structure disclosed by the invention has an over-temperature protection function and a fire extinguishing function at the same time, can timely capture battery heating and switch off a circuit according to the temperature in the battery module, can be recycled, can prevent a battery cell from catching on fire due to thermal runaway, and has a fire extinguishing effect on the battery cell which is subjected to thermal runaway.

The invention relates to the technical field of fire extinguisher valves, in particular to a fire extinguisher valve with a limiting assembly. The fire extinguisher valve comprises a mounting sleeve,a valve body structure, a pressing structure, a limiting structure, a positioning structure and a lubricating structure. Through the arrangement of the limiting structure, not only the pressing structure can be limited thereby preventing ejection caused by false touch, the assembly for limiting the pressing structure can be rapidly contracted when the pressing structure is needed to be used so that the rapid use of the pressing structure can be ensured; through the arrangement of the positioning structure, the effect of fire extinguishing can still be achieved without the need of pressing allthe time after the pressing structure is pressed, and the size of required ejection can be adjusted according to the actual condition so that better targeted fire extinguishing can be achieved, and the better fire extinguishing effect can be achieved; and the pressing structure can also act on the lubricating structure while working, the work of the lubricating structure can perform oiling and lubricating work on the positioning structure, and therefore the effect of lubricating a rotary part during pressing can be realized, and the situation of laborious rotating is avoided.

The invention discloses a multi-input single-output compressed air foam system based on a PLC. The system comprises a water flow detection unit connected with a foam loop control algorithm unit and an air loop control algorithm unit. The water flow detection unit, the foam loop control algorithm unit and the air loop control algorithm unit are all connected with the PLC, and the PLC is further connected with the alarm. The invention further discloses a control method of the multi-input single-output compressed air foam system based on the PLC. The problems that in the prior art, a compressed air foam device is immature in control method, unstable in control, unreliable in result, unobvious in fire extinguishing effect and unstable in foam quality are solved.

The invention relates to the technical field of building materials, and discloses a light wood structure fireproof wall body plate which comprises a wall body plate body, wherein an accommodating cavity is formed inside the wall body plate body; accommodating bags are symmetrically fixed inside the accommodating cavity; and each of the two accommodating bags is filled with a dry powder extinguishing agent and nitrogen gas. The accommodating cavity is formed inside the wall body plate body, the two accommodating bags filled with the nitrogen gas and the dry powder fire extinguishing agent are fixed inside the accommodating cavity; after a fire hazard condition occurs, and when the wall body plate body is burnt out by fire, the nitrogen gas inside the accommodating bags can expand through being heated since the accommodating bags cannot be ignited; and finally the accommodating bags can be broken through expansion, so that the dry powder fire extinguishing agents in the accommodating bags are sprayed out. Therefore, the surrounding fire can be extinguished; meanwhile, the concentration of the surrounding oxygen gas can be reduced by the sprayed nitrogen gas; and the fire extinguishing effect can be further achieved. Compared with an existing wall body plate, the wall body plate has a better fireproof effect.

The invention provides a novel explosion-proof flame-retardant belting material for a cable, which comprises the following components in percentage by mass: 70-97% of a flame-retardant rubber materialand 3-30% of a framework material, and the framework material is a flame-retardant fiber mesh material with the strength of more than 25g / denier. The flame-retardant rubber material comprises a halogen-free flame retardant, liquid rubber, a filler, a chain extender and a catalyst. The framework material is controlled to be designed to be a flame-retardant fiber mesh type, good ventilation performance is achieved, air circulation is facilitated, heat generated by the cable in the operation process can be dissipated to the external environment in time, the temperature of the cable is reduced, and the service life of the cable is prolonged. By controlling the mass percentage of the halogen-free flame retardant in the flame-retardant rubber material to be 35-70%, the explosion-proof flame-retardant belting material can be instantly expanded and foamed under the action of open fire, thereby playing a good role in fire prevention and heat insulation on the internal cable and effectively protecting the cable from being damaged by fire accidents.

The invention discloses an automatic carbon dioxide fire-extinguishing device for an industrial workshop and belongs to the field of industrial automation. By the adoption of the automatic carbon dioxide fire-extinguishing device for the industrial workshop, the problems that according to existing traditional fire-preventing measures for the industrial workshop, the reaction time is long, and secondary damage is likely to be caused are mainly solved. Smoke sensors are fixed to the wall of the workshop in a screw connection mode. A carbon dioxide draught fan is of a centrifugal type and is installed on the outer side of the wall of the workshop. A carbon dioxide ventilation opening penetrates through the wall of the workshop and reaches the inner side of the wall of the workshop. The carbon dioxide draught fan and the smoke sensors are connected with a computer through cables. The carbon dioxide draught fan and the smoke sensors are connected in parallel. A smoke sensor signal analysis module is inlaid in the computer. Compared with the existing fire-preventing and fire-extinguishing measures for the industrial workshop, the device has the beneficial effects of being responsive and rapid in action; meanwhile, due to the fact that an inert gas fire-extinguishing method is adopted, secondary damage to equipment is avoided, and thus the loss caused by a fire disaster is greatly reduced.

The invention relates to the field of mine fire, gas and derived disaster protection equipment, in particular to a suspended track type movable fire-extinguishing explosion-proof device. The device comprises a motion execution system, wherein the motion execution system is suspended on a track and can move along the track; a carrier, wherein the carrier is arranged in the motion execution system,a cavity is formed in the carrier, and an openable box door is arranged at the bottom side of the carrier; and a fire extinguishing system, wherein the fire extinguishing system comprises a fire extinguishing agent heat preservation layer arranged in the cavity. The suspended track type movable fire-extinguishing explosion-proof device of the invention can monitor the conditions of gas concentration, temperature and the like in a mine in real time; after detecting that a fire occurs in the mine, fire extinguishing treatment is carried out through the stored dry water-carbon dioxide hydrate fire extinguishing agent; and after the fire extinguishing treatment, if the gas concentration in a roadway is too high, a self-suction explosion-proof system is started to suck the gas into the storagecavity to form hydrate with the water solution, so that the concentration of the gas in the roadway is reduced, and gas explosion in the mine is avoided.

The invention discloses a pre-buried double-pipe stepping type goaf nitrogen injection method which comprises the following steps: firstly, determining the length of an oxidation heating zone of a goaf, enabling the oxidation heating zone to move forwards along with the recovery of a fully mechanized coal mining face, and laying two nitrogen injection pipes in front of and behind a whole recovery air inlet roadway, namely a first nitrogen injection pipe and a second nitrogen injection pipe. The two nitrogen injection pipes are respectively connected with a nitrogen injection source through valves outside a mining stopping line of a working face, and the two nitrogen injection pipes move forwards to oxidize a heating zone to perform double-pipe stepping type nitrogen injection along with pushing mining of the working face, so that the spontaneous combustion phenomenon of residual coal in a goaf can be avoided, the fire extinguishing effect is achieved, and the purpose of preventing and extinguishing fire is achieved. Smooth operation of a coal face is guaranteed, the safety coefficient of coal mining operation is improved, two pipelines are directly buried at a time, stepping alternating type nitrogen injection is carried out, and the problems that a conventional nitrogen injection pipeline is difficult to install and recycle, prone to breakage and short in working time are solved.

The invention provides a fire-extinguishing device and a fire-extinguishing system, relates to the technical field of fire-fighting and aims to solve the problem that safety of a hot commissioning site is difficultly ensured in the prior art. The fire-extinguishing device comprises a control mechanism, a first driving mechanism and a bullet pushing mechanism, the control mechanism comprises a flame sensor and a controller, the flame sensor is connected with the controller and used for detecting flames and transmitting flame detection signals to the controller, the controller controls the firstdriving mechanism to start according to the flame detection signals transmitted by the flame sensor, and the first driving mechanism is used for driving the bullet pushing mechanism to launch fire extinguishing bullets. The fire-extinguishing device can be automatically started to extinguish fire while firefighters do not need to approach the flames, so that safety of the firefighters is guaranteed.

The invention discloses an under-liquid fire extinguishing system for an oil tank. The system comprises a foam liquid distributor, wherein a foam liquid distributing joint is arranged on the foam liquid distributor; a second flange is connected to the foam liquid distribution joint, and the second flange is fixedly connected to a first distribution pipe; the first distribution pipe is fixedly connected to a third flange which is fixedly connected to the input end of a foam generator; a fourth flange which is fixedly connected to a reducing joint is fixedly connected to the output end of the foam generator; and the reducing joint is fixedly connected to a second distribution pipe which is connected to a nozzle pipe. According to the under-liquid fire extinguishing system for the oil tank, foam liquid in the foam liquid distributor enters the first distribution pipe through the foam liquid distribution joint, and the foam liquid further flows into the foam generator; when petroleum at the lower part of a floating cover is fired, the foam generator is started, and foam is injected through the output end of the foam generator; the injected foam enters the second distribution pipe and then is injected out through the nozzle pipe; seams in the circumferential side of the nozzle pipe are filled with the foam, and thus the petroleum at the lower part of the floating cover is insulatedfrom air, and as a result, the fire is extinguished.

The invention relates to a water-based fire extinguishing agent for extinguishing a gasoline-type fire and further provides a preparation method of the fire extinguishing agent. The formula of the water-based fire extinguishing agent comprises 1%-3% of nonionic surfactants, 5%-15% of one or two of KBr or NaBr, 0.1%-0.5% of EDTA disodium and the balance CO2 water solution. The preparation method ofthe fire extinguishing agent comprises the following steps that by mass, the nonionic surfactants, one or two of the KBr or the NaBr and the EDTA disodium are weighed; and firstly, the EDTA disodiumis dissolved into water and stirred, then the nonionic surfactants, and one or two of the KBr or the NaBr are dissolved into the water to prepare the water solution, then 0.5-2 MPa of CO2 gas is applied to the solution in an airtight condition, still standing is conducted for more than 1 h, and the fire extinguishing agent is obtained. According to the fire extinguishing agent, the fire extinguishing efficiency on gasoline can be greatly improved.

The invention discloses a spontaneous combustion prevention garbage can for a green city. The spontaneous combustion prevention garbage can comprises a can body, wherein a groove is formed in the bottom in the can body, a sliding plate is slidably connected to the inner wall of the groove in a sealed mode, electromagnetic plates are embedded in the lower end of the sliding plate, and permanent magnet plates repelling the electromagnetic plates are embedded in the bottom in the groove; and a first power supply mechanism for supplying power to the electromagnetic plates according to the temperature change in the can body is mounted on the sliding plate, a strip-shaped cavity is formed in the side wall of the can body, a sliding plug is slidably connected to the inner wall of the strip-shaped cavity in a sealed mode, and a partition plate is fixedly connected to the upper end of the sliding plug. A memory spring contracts to drive a current-conducting plate to slide, so that the current-conducting plate is separated from a current-conducting block, then magnetism on the electromagnetic plates disappears, the sliding plate descends under the gravity effect of garbage in the can body, gas in the groove is extruded into the strip-shaped cavity through a connecting pipe, the sliding plug slides upwards to drive the partition plate to slide, the upper end of the can body is sealed to isolate air, the oxygen content in the can body is reduced, and the fire extinguishing effect is achieved.

A remote control type automatic fire extinguishment fire fighting truck comprises an externally arranged control mechanism, a truck body, a communication adaption device, a fire extinguishing agent preparation system, a material conveying device, a spray gun and a power mechanism, wherein the communication adaption device, the fire extinguishing agent preparation system, the material conveying device, the spray gun and the power mechanism are arranged on the truck body. The power mechanism is electrically connected with the communication adaption device, the fire extinguishing agent preparation system, the material conveying device and the spray gun. The externally arranged control mechanism controls the fire extinguishing agent preparation system, the material conveying device and the spray gun to complete preparation, conveyance and located spray of a fire extinguishing agent under the power supply of the power mechanism through the communication adaption device. According to the remote control type automatic fire extinguishment fire fighting truck, through the fire extinguishing agent preparation system adopting the manner that the fire extinguishing agent is used after being prepared in real time, waste of fire extinguishing chemical resources is avoided to the maximum extent; through the arrangement of an internal and external combination type sprayer, the fire extinguishment efficiency is significantly improved; remote control is achieved through the external remote control mechanism, and injuries and deaths are avoided; and the remote control type automatic fire extinguishment fire fighting truck is high in the overall automation degree, small in resource consumption and good in fire extinguishment effect.

The invention discloses an automatic fire extinguishing intelligent container comprising a container body, a main power supply, a differential constant temperature type temperature sensing detector, an infrared beam smoke sensing detector and an infrared flame detector. In case of a fire, the system can give out multi-stage alarms, can give an alarm to remind and prevent the fire before the fire occurs, can automatically extinguish the fire and restrain and extinguish the fire at the initial stage when the fire breaks out and the quick alarm is not accepted in time, and has the effects of effectively preventing and extinguishing the fire. Through a thermistor and a temperature control switch, smoothness of a connecting channel of a guide pipe and a nozzle and release of CO2 are achieved, release of an internal fire extinguishing agent can be rapidly achieved, and the fire extinguishing effect is achieved.

The invention discloses an automatic protection device for a transformer; the device comprises a bottom plate, the top of the bottom plate is provided with a transformer, a binding post at the top of the transformer is connected with two insulated wires used for power transmission, the top parts, close to the two sides, of the bottom plate are fixedly provided with mounting strips, and the outer walls of the two mounting strips are provided with sliding grooves. Two sliding grooves are formed in the bottom plate, lifting blocks are vertically installed in the two sliding grooves in a sliding mode, springs are connected to the tops of the two lifting blocks and the inner walls of the two sliding grooves correspondingly, cutting knives are installed at the bottoms of the two lifting blocks, and grooves allowing the cutting knives to penetrate through are formed in the positions, located below the two cutting knives, of the top of the bottom plate correspondingly. Through cooperation of the structures, when the transformer encounters a fire emergency situation, power-off protection can be conducted on the transformer in the first time, the effect of conducting processing protection on the transformer in time is achieved, secondary accidents are prevented from being caused, and the protection performance of the transformer is further improved.

The application relates to a suspended water mist fire extinguishing system, which belongs to the technical field of fire protection engineering, and includes a suspension frame, a water pump and a tank body, and also includes an air tank and a fire suppressing tank. There is a gas pipe connected between the gas tank and the fire suppressing tank. There is a switch assembly for opening and closing the air pipe; the bottom of the tank is provided with a nozzle, and the side wall of the nozzle away from the tank is provided with a nozzle hole, the water inlet of the water pump is connected with the tank, and the water outlet of the water pump is connected with the nozzle, and the spray The outer sleeve is provided with an outer sleeve, and a connecting pipe is communicated between the outer sleeve and the fire suppression tank. In the event of a fire, the water pump pumps the water in the tank into the nozzle, and sprays it from the nozzle hole to form water mist; the high-pressure gas in the gas tank is transported into the fire suppression tank through the air pipe, and the fire suppression agent in the fire suppression tank is brought into it by the high-speed airflow The connecting pipe then enters the outer casing, and is sprayed to the fire source together with the water mist, which has the effect of extinguishing the fire. The fire suppressant can effectively increase the fire extinguishing effect and reduce the use of water.

The invention discloses a safety power distribution cabinet. The safety power distribution cabinet comprises a cabinet body, a controller, a smoke sensor, air outlet pipes and vent holes, a cabinet door is arranged on the front side of the cabinet body, and the end, away from a shaft rod, of a moving rod penetrates through a fixing block. The left sides and the right sides of the cabinet body andthe cabinet door are connected through the cabinet door locking pieces, the controller and the smoke sensor are both arranged at the top in the cabinet body, and the air outlet pipes are fixed to theleft side and the right side of the inner wall of the cabinet body. The end, away from the air outlet pipes, of an air conveying pipe is connected with a carbon dioxide air storage tank, the carbon dioxide air storage tank is arranged in an equipment chamber, and the vent holes are formed on the left side wall and the right side wall of the cabinet body. According to the safety power distributioncabinet, when the smoke sensor senses that smoke is generated in the device, signals are transmitted to the controller, the controller starts an alarm and an electromagnetic valve, the alarm reminds people, the electromagnetic valve is turned on, the gas in the carbon dioxide gas storage tank can be rapidly introduced into the cabinet body, and the fire extinguishing effect is achieved, and therefore the safety is improved.

The invention relates to a suspension type water mist fire extinguishing system, and belongs to the technical field of fire-fighting engineering. The suspension type water mist fire extinguishing system comprises a suspension frame, a water pump, a tank body, a gas tank and a fire suppression tank; a gas pipe is in communication between the gas tank and the fire suppression tank, and a switch assembly for opening and closing the gas pipe is arranged on the gas pipe; a spray pipe is arranged at the bottom of the tank body, and spray holes are formed in the side wall, away from the tank body, ofthe spray pipe; and a water inlet of the water pump is in communication with the tank body, a water outlet of the water pump is in communication with the spray pipe, an outer sleeve pipe sleeves thespray pipe, and a connecting pipe is in communication between the outer sleeve pipe and the fire suppression tank. When a fire occurs, the water pump pumps water in the tank body into the spray pipe,and the water is sprayed out from the spray holes to form water mist; and high-pressure gas in the gas tank is conveyed into the fire suppression tank through the gas pipe, a fire suppressant in the fire suppression tank is brought into the connecting pipe by high-speed gas flow, then enters the outer sleeve pipe and is sprayed to a fire source along with water mist, the fire extinguishing effectis achieved, the fire suppression effect is effectively improved through the fire suppressant, and the use amount of water is reduced.

A new type of fire extinguisher for fire fighting, comprising a fire extinguisher barrel, a buckle groove and a buckle; the top of the fire extinguisher barrel is provided with a fire extinguisher pressure handle; Nozzle; a handle is welded on the outer wall of the right end of the fire extinguisher barrel; a connecting rod is connected to the bottom end of the inner wall of the pressure handle of the fire extinguisher, and the connecting rod penetrates through the pressure handle of the fire extinguisher and is welded with a thumb pressure block; the thumb pressure The block is provided with a groove fitting with the thumb of the human body. The spray pipe of the present invention is fixedly wrapped with a sponge cladding, and the wrapped position of the sponge cladding is located at the joint between the spray pipe and the nozzle. Through the setting of the sponge cladding, the user does not need to grasp the nozzle when using the fire extinguisher of the present invention , you can directly grasp the sponge covering, and place it to prevent the phenomenon that the palm of the hand sticks to the outer wall of the nozzle end due to the low temperature of the nozzle end when some types of fire extinguishers are in use.

The invention discloses an insulating fire-resistant cable trough box, and relates to the field of cable trough boxes. The insulating fire-resistant cable trough box comprises a bottom box and an upper box cover, the bottom box is located below the upper box cover, and a fixing mechanism is arranged on the outer surface of the lower end of the bottom box. According to the insulating fire-resistant cable trough box, through arrangement of a protection mechanism, when the insulating fire-resistant cable trough box is used, the use safety of cables can be improved, the cables can be prevented from being wound, different types of cables can be distinguished, the insulating fire-resistant effect can be achieved; and through arrangement of the fixing mechanism, the mounting efficiency of the cable trough box can be improved when the insulating fire-resistant cable trough box is used;, different installation modes are convenient to carry out, the box is stable during use; the upper box cover and the bottom box are convenient to disassemble and assemble through concave magnetic strips and convex iron strips, and the box is convenient and fast to use; a certain fire extinguishing effect can be achieved through carbon dioxide in the fireproof air bag when the fireproof air bag is used, and the safety is high during use; and the use effect is better than that of a traditional mode.

The invention discloses a light flame-retardant insulation board for a building external wall and a preparation method thereof. The light flame-retardant insulation board is prepared from high-density polyethylene, a coupling agent, a foaming agent, aramid fibers, phenolic resin and a refractory through raw material mixing, frame building and pouring, capsule making and fixing, ventilation and foaming, sealed coating and drying formation. The high-density polyethylene is used as a main raw material, the aramid fibers and the phenolic resin are added, the aramid fibers and the phenolic resin have the excellent performance of ultrahigh strength, high modulus, high temperature resistance and the like, and the high temperature resistance of the heat preservation plate can be effectively improved; and in addition, the flame-retardant layer is arranged on the heat preservation plate, and the fire-resistant agent is added into the flame-retardant layer, so that the fire can be prevented from burning; flame-retardant bags are additionally arranged in the flame-retardant plate, and carbon dioxide and water can be released by the flame-retardant bags in the flame-retardant plate if fire disasters, and combustion explosion and the like occur, so that fire extinguishing effects can be effectively realized, and personal safety can be better protected.