CN107050702B - But reuse's multi-functional small-size throw type fire extinguisher - Google Patents

Abstract

The invention discloses a reusable multifunctional small-sized throwing fire extinguisher, which belongs to the field of fire-fighting equipment, wherein a main body of the fire extinguisher is a steel cylinder, a timer, a starter and a fire extinguishing agent container are arranged in the steel cylinder, the timer comprises a rotating shaft, the starter comprises an exciter and a nozzle communicating device, the exciter and the nozzle communicating device are fixed on the rotating shaft, a nozzle is arranged at the upper part of the fire extinguishing agent container, a safety handle is arranged outside the steel cylinder, the safety handle is connected to the timer by a cord, and a timer spring which is coiled in a locking and contracting manner is locked.

Description

But reuse's multi-functional small-size throw type fire extinguisher

Technical Field

The invention relates to a fire extinguisher, in particular to a multifunctional small-sized throwing type fire extinguisher capable of being repeatedly used, and belongs to the field of fire-fighting equipment.

Background

The fire and water are inexistent and the prevention is mainly carried out, wherein most of the fire disasters are caused by poor management and carelessness, and the preparation of the fire extinguisher is to prevent in case of fire, so that the fire fighting and extinguishing play a vital role once the fire disasters happen, and the fire extinguisher is a big matter of property and people life in the country. The fire extinguishers are various and can be divided into the following types according to the filled fire extinguishing agents: foam, dry powder, alkyl halide, carbon dioxide, acid-base, clear water, etc., the first two being most commonly used.

The portable dry powder pressure-storing fire extinguisher uses nitrogen as power to press out dry powder in the cylinder. Is suitable for fighting fire hazards of petroleum products, paint and organic solvents. The dry powder type has its inside stored with sufficient pressure at the time of filling, and the pressure blows out the fire extinguishing agent in the bottle at the time of use. The dry powder fire extinguishing agent is composed of inorganic salt with fire extinguishing effect and a small amount of additive which are dried, crushed and mixed to form fine solid powder. Is a dry, easily flowable, fine powder that utilizes chemical inhibition and suffocation to extinguish fires. It can suppress the chain reaction of combustion to extinguish fire. It is also suitable for extinguishing liquid, gas and electric fire (the dry powder has the electric insulation performance of more than 5 ten thousand volts). When the dry powder cart is used, the cart fire extinguisher is quickly pushed to the position close to a fire source, the spraying rubber tube is pulled out and straightened, the safety pin is pulled out, the door handle is pulled and straightly cut to be aligned with the root of flame, so that the powder fog is transversely swept to the important flame, the fire source is cut off, the flame is controlled to return, and the fire is pushed forwards from near to far to extinguish.

The foam fire extinguisher is mainly chemical foam, and the foam fire extinguishing agent is a fire extinguishing agent which is mixed and dissolved with water and generates foam by adopting a mechanical or chemical reaction method. Typically consisting of chemicals, hydrolyzed protein or an aqueous solution of surfactants and other additives. The fire extinguishing mechanism of the foam fire extinguishing agent is mainly cooling and suffocation, namely, a continuous foam layer is formed on the surface of a burning object on fire, air is prevented from entering, the surface of the burning object is cooled by the foam and separated mixed liquid, and the burning object is isolated from oxygen by the covering effect of the foam layer to extinguish the fire. The foam can cover the surface of the combustion product. It is suitable for extinguishing liquid fire, and can not extinguish water-soluble combustible and inflammable liquid fire (such as alcohol, ester, ether and ketone) and electric appliance fire. For oil fire, it can not be sprayed against the center of oil surface to prevent the oil from coming out, and it is sprayed upwards along the periphery of fire edge root to cover the oil surface and extinguish the fire. When in use, the cylinder bottom and the cylinder cover can not be opposite to the human body, so as to prevent the occurrence of danger. Besides the special dry powder extinguishing agent for extinguishing metal fire, the commonly used dry powder extinguishing agent is generally divided into BC dry powder extinguishing agent and ABC dry powder extinguishing agent, such as sodium bicarbonate dry powder, modified sodium salt dry powder, ammonium dihydrogen phosphate dry powder, diammonium hydrogen phosphate dry powder, phosphoric acid dry powder and the like.

In addition, various gas extinguishers are provided, such as a carbon dioxide extinguisher, which uses carbon dioxide stored in a high-pressure gas cylinder as a fire extinguishing agent to extinguish fire, does not leave traces after the carbon dioxide extinguishes, is suitable for extinguishing fire of valuable instruments, archives and computer indoor fire, is non-conductive, is also suitable for extinguishing fire of electrified low-voltage electrical equipment and oil, but cannot be used for extinguishing fire of potassium, sodium, magnesium, aluminum and other substances.

The above-mentioned many fire extinguishers, whether the portable or cart-type operation is complicated, still train the special fire-fighting equipment using method, and the weight is big, the operation is difficult, need appointed young and vigorous professional to operate, wherein the biggest one characteristic is to be close to the ignition point to play the role, can not exceed 5 meters farthest, once the fire situation expands or in the case of wind, will bring the problem of burning or getting bad for life to the fire fighter, can only rely on the fire control setting of high-level such as fire engine to put out the fire, will bring greater loss during waiting, under the condition that does not have large-scale equipment such as fire engine, the fire-fighting equipment of close distance puts out the fire will have certain drawback, in addition, when there are dangerous things such as explosive in the scene of the fire, the fire fighter can not be close to, under this condition, if can have the equipment that plays the fire control role in far distance can reduce the loss that the fire reaches, the harm to the close range fire extinguishing personnel caused by the fire can be reduced.

Disclosure of Invention

The invention provides a reusable multifunctional small-sized throwing fire extinguisher, aiming at solving the problems that the existing small-sized fire extinguisher has heavy weight and complex operation, and can burn or worry the fire fighter under the condition that the fire is expanded or a fire is in a wind condition, and the fire fighter is damaged.

The technical scheme of the invention is as follows: a reusable multifunctional small-sized throwing fire extinguisher comprises a timer, wherein the main body of the throwing fire extinguisher is a steel cylinder, the steel cylinder is internally and sequentially provided with the timer, a starter and a fire extinguishing agent container from top to bottom, the timer comprises a rotating shaft, the starter comprises an exciter and a nozzle communicating device, the exciter and the nozzle communicating device are sequentially fixed on the rotating shaft at intervals, the upper part of the fire extinguishing agent container is provided with a nozzle, a safety handle is arranged outside the steel cylinder, the safety handle is connected to the timer through a cord, a timer spring which is coiled in a locking and contracting manner is locked, when the multifunctional small-sized throwing fire extinguisher is used, the safety handle is pulled down, the timer starts to rotate and time, the fire extinguisher is thrown to a fire scene, and the fire extinguishing agent is sprayed out of the fire extinguisher through the nozzle in a throwing process;

in the multifunctional small-sized throwing fire extinguisher, the exciter comprises a rotary pressure plate and a valve body pressing handle connected with a valve body below a nozzle, the middle part of a rotating shaft of the timer is connected with the rotary pressure plate, an arc gradually-protruding pressing rib is arranged on the lower surface of the rotary pressure plate, the thickness of the arc gradually-protruding pressing rib is gradually increased along with an arc, the valve body pressing handle is arranged below the arc gradually-protruding pressing rib, and the arc gradually-protruding pressing rib presses the valve body pressing handle to excite the pressure change in a fire extinguishing agent container;

in the multifunctional small throwing fire extinguisher, the nozzle is arranged on the nozzle part, the nozzle is arranged opposite to the lower part of the inner nozzle, a nozzle communicating device is arranged between the nozzle and the inner nozzle, the nozzle communicating device is a rotary disc, a communicating hole is arranged on the rotary disc, the rotary disc is connected to the rotary disc, the rotary disc rotates by taking the rotary shaft as the axis, the communicating hole deviates from the axis, the inner nozzle is communicated with the outer nozzle, after the safety handle is pulled out, the rotary disc rotates under the driving of the timer rotary shaft, the communicating hole of the rotary disc deviating from the axis stops after the nozzle and the inner nozzle are opposite to each other, and the nozzle and the outer nozzle are communicated;

in the multifunctional small throwing type fire extinguisher, a floating sealing cover is arranged on the upper surface of a fire extinguishing agent container, the upper end of a step-shaped spray pipe is fixed on the lower side of a spray nozzle, the step-shaped spray pipe is thick on the upper part and thin on the lower part, a spray pipe hole is arranged on the floating sealing cover, a sealing sleeve is arranged in the spray pipe hole, the step-shaped spray pipe extends into the fire extinguishing agent container through the spray pipe hole, a valve body is arranged in the step-shaped spray pipe, a valve body switch is connected to a valve body pressing handle, and the valve body is a one-way valve;

in the multifunctional small-sized throwing fire extinguisher, the throwing fire extinguisher is a foam fire extinguisher, a metal supporting plate is arranged at the middle upper part of a fire extinguishing agent container, a plurality of reaction agent containers are arranged on the metal supporting plate, a floating sealing cover is connected with the metal supporting plate or the reaction agent containers through a chain rope, gas is filled in the fire extinguishing agent container, after a valve body is pressed down, the pressure of the fire extinguishing agent container changes, the floating sealing cover floats upwards until the step part stops, the metal supporting plate falls to the bottom, the reaction agent begins to react, a plurality of reaction agents are fully mixed and react in the throwing process, and foam is sprayed out of an outer nozzle;

in the multifunctional small-sized throwing fire extinguisher, the throwing fire extinguisher is a dry powder fire extinguisher, dry powder is filled in the fire extinguishing agent container, after the valve body is pressed down, the pressure of the fire extinguishing agent container changes, the floating sealing cover floats upwards until the step part stops, and after throwing, the dry powder is sprayed out of the outer nozzle;

in the multifunctional small throwing fire extinguisher, the outer surface of the steel cylinder is positioned at the outer nozzle and is of a concave taper structure, the outer nozzle is provided with a bottle plug, the outer surface of the steel cylinder is provided with an internal pressure gauge, and the inner wall of the fire extinguishing agent container is provided with an alumina coating;

in the multifunctional small throwing type fire extinguisher, a clockwork spring is arranged in the timer, the clockwork spring is in a tensioning state when the safety handle is pulled out, and the clockwork spring has elasticity;

in the multifunctional small throwing type fire extinguisher, before the throwing type fire extinguisher is not pulled out of the safety handle, the floating sealing cover is positioned at the lower side of the step, the sealing sleeve is of a bushing-shaped structure, the thick part of the sealing sleeve is positioned at the upper side of the floating cover, the thin part of the sealing sleeve is sleeved in the spray pipe hole, and the inner diameter of the sealing sleeve is consistent with the outer diameter of the thin pipe of the stepped spray pipe;

in the multi-functional small-size throw type fire extinguisher, the thickness increase direction of the gradually protruding pressure muscle of arc is opposite with the direction of rotation of rotatory pressure disk.

The invention has the beneficial effects that: through using the steel bottle with throwing type fire extinguisher main part, because the steel bottle can bear the pressure value that original pressure and reaction after produced gas in the bottle, the original pressure energy of steel bottle can be guaranteed still can produce pressure and can blow off the fire extinguishing agent with the reactant when using after depositing for a long time, in addition, because throw the back fire extinguisher and will receive the toast of scene of a fire high temperature, pressure can the grow in the steel bottle when receiving the high temperature, the steel bottle has refractiveness and crushing resistance, and can retrieve back used repeatedly.

Through set up the timer in the steel bottle, can keep certain time after the start, have the required time of throw process, in addition, with the fixed of timer, the clockwork spring in the timer can the pivot rotate, can drive the part of fixed connection in the pivot and follow the rotation, but make full use of the power of clockwork spring.

Through setting up the starter in the timer pivot, not only can utilize the exciter on the starter to make the inside gaseous pressure of fire extinguishing agent container change, arouse inside physical action or the chemical reaction of taking place, increase internal pressure can utilize the nozzle linker to communicate each other the inside and outside of steel bottle in addition, can release inside fire extinguishing agent, and outside the fire extinguishing agent that makes in the fire extinguishing agent container spouted the steel bottle, suppressed or put out the fire behavior.

Through setting up the fire extinguishing agent container, can deal with the conflagration of different properties according to the kind of fire extinguisher, the different kinds of fire extinguishing agent of equipment, can prevent because of the improper other injuries that cause of fire extinguishing agent.

The exciter is designed into the arc-shaped gradually convex pressing rib, so that the exciter can press down the valve body pressing handle, gas in the fire extinguishing agent container is changed, and physical or chemical reaction or action is excited.

Through designing into a carousel with the nozzle communicating vessel to set up the intercommunicating pore on the carousel, can be rotatory under the drive of pivot after the timer starts, when the intercommunicating pore rotated spout and the interior nozzle position that sets up relatively from top to bottom on the carousel, regularly before finishing, produced huge internal pressure behind inside physical action or the chemical reaction, can be with the fire extinguishing agent blowout.

The thickness increase direction of the gradually protruding pressure muscle through the arc is opposite with the direction of rotation of rotatory pressure disk, can be at the timing in-process, and the gradually protruding thickness of pressing the muscle of arc thickens gradually, can make the valve body press and push down gradually, can change the gaseous emergence of inside storage gradually, when the intercommunicating pore rotated spout and interior nozzle relative position, atmospheric pressure changed and can make inside production physical action or chemical reaction.

Through being provided with safe handle outside the steel bottle, safe handle is connected to the timer with the cotton rope, can guarantee under the service behavior that the fire extinguisher does not take place to react, can not produce new internal pressure yet, only through extracting safe handle, the elasticity is released to the original fixed tightening winding clockwork spring, and the timer begins to start, can guarantee that the fire extinguishing agent is inside to have to carry out physical action or chemical reaction time or throw the fire extinguisher time.

Through set up the intercommunicating pore on the carousel to before the timer starts, set up the intercommunicating pore position and leave spout and interior nozzle relative position, can make to produce certain pressure in the fire extinguishing agent container, win reaction time and throw time.

Through set up floating seal lid at fire extinguishing agent container upper surface, can enlarge the volume of fire extinguishing agent container through floating seal lid come-up, can give certain reaction process of fire extinguishing agent.

Through set up benefit heart form seal tube in the sealed nozzle hole of floating cover upper surface, can make all the time to float and keep encapsulated situation between sealed lid and the step form nozzle pipe at the sealed lid come-up in-process that floats, can drive the sealed lid that floats and rise, play sealed effect, win reaction time and throw time.

The spray pipe is designed into a step shape and a structure with a thin lower part and a thick upper part, the floating sealing cover can stop moving after floating up to the step, the internal pressure at the position also reaches a certain height to achieve the fire extinguishing degree, and then the fire extinguishing agent reacts in the throwing or landing process to generate new pressure change, so that the internal fire extinguishing agent can be sprayed out.

The upper part of the fire extinguishing agent container is provided with the nozzle, the stepped spray pipe is arranged below the nozzle, the nozzle is provided with the valve body, the spray pipe can ensure that the fire extinguishing agent is sprayed out in sequence, and the valve body can ensure that the valve body is in an internal sealing state or an opening state under a non-opening state.

Through designing into concave taper structure with steel bottle surface outer nozzle department, be provided with the bottle plug on the outer nozzle, the bottle plug when the fire extinguisher does not use, closely laminate with the oval top in outside of fire extinguishing agent, can prevent the condition of gas leakage decompression, lead to the fire extinguisher unable normal use after throwing, the bottle plug falls to the ground after throwing its inside pressure and releases the bottle plug, because its inside pressure is greater than external pressure, including the vibrations after falling to the ground, the bottle plug can be popped out.

Through being provided with inside manometer at the steel bottle surface, be favorable to knowing steel bottle internal pressure situation, be favorable to regularly checking, can judge the usable condition of fire extinguisher.

Through forming the aluminium oxide coating at fire extinguishing agent container inner wall, can improve the scouring of fire extinguishing agent blowout in-process to the inner wall, be favorable to improving the abrasive resistance of inner wall, improve used repeatedly number of times, guarantee the intensity of steel bottle.

The fire extinguisher is designed into a throwing type foam fire extinguisher, the middle upper part of a fire extinguishing agent container is provided with a metal supporting plate, the supporting plate is provided with a plurality of reactant containers, gas is filled in the fire extinguishing agent containers, the internal pressure can be changed after a valve body is pressed down or the metal supporting plate or the reactant containers can be fallen or lifted to the bottom of the fire extinguishing agent container through the pulling of a chain rope, the metal supporting plate or the reactant containers are mixed with each other and react to generate sprayed foam, the sprayed foam extinguishing agent can play a role in cooling and suffocating open fire, namely a continuous foam layer is formed on the surface of a burning object, the surface of the burning object is cooled through the foam and the separated mixed liquid, and the burning object is isolated from oxygen through the covering effect of the foam layer to extinguish fire.

The fire extinguisher is designed into a throwing type dry powder fire extinguisher, dry powder is arranged in a fire extinguishing agent container and is filled with gas, after a valve body is pressed down to press a handle, pressure change occurs in the fire extinguishing agent container, after the fire extinguishing agent container is thrown, the dry powder is sprayed out of an outer nozzle, and the dry and easy-to-flow fine powder is composed of inorganic salt with fire extinguishing effect and a small amount of additives. The dry powder fire extinguishing agent is contacted with flame under the action of pressurized gas in the fire extinguishing agent container, and when the powder mist is mixed with the flame, the chemical inhibition and negative chemical catalysis are generated by volatile decomposers of inorganic salts in the dry powder and free radicals or active radicals generated by combustion substances in the combustion process, so that the chain reaction of combustion is interrupted to extinguish the fire, and the powder of the dry powder falls on the surface of combustible to generate chemical reaction, and a layer of covering layer is formed under the action of high temperature, thereby isolating oxygen and extinguishing the fire.

By utilizing the invention, the weight of fire extinguishing equipment can be reduced, the operation steps are simplified, the operation training is saved, the fire extinguishing operation can be carried out at a position far away from a fire scene, the possibility of fire harming fire extinguishing personnel can be reduced, the difficult problem that the fire extinguishing cannot be carried out in a short time due to larger fire intensity and stronger wind power can be solved, the fire extinguishing speed can be improved, and the property loss and the life loss caused by fire can be reduced.

Drawings

FIG. 1 is a schematic view of the external structure of the present invention.

FIG. 2 is a schematic view of the connection structure of the timer with the exciter and the nozzle communicating vessel.

FIG. 3 is a schematic view of the rotary platen and the curved, gradually convex rib.

FIG. 4 is a diagram showing the relationship between the fixing position of the communicating hole on the turntable and the rotating shaft.

Fig. 5 is a schematic sectional view of the throw-type foam extinguisher.

Fig. 6 is a schematic sectional view showing a throw-type dry chemical extinguisher.

Description of reference numerals: 1-steel cylinder, 2-top cover, 3-bottle stopper, 4-pressure gauge, 5-timer, 6-safety handle, 7-cord, 8-rotary pressure plate, 8 a-rotating shaft hole I, 9-arc gradually convex pressure rib, 10-valve body, 11-valve body pressure handle, 12-fire extinguishing agent container, 13-rotary table, 13 a-rotating shaft hole II, 14-rotating shaft, 15-communicating hole, 16-inner nozzle, 17-outer nozzle, 18-nozzle part, 19-nozzle, 20-nozzle, 21-step, 22-thick pipe, 23-thin pipe, 25-floating sealing cover, 26-sealing sleeve, 28-metal supporting plate, 29-chain rope and 30-reaction agent container.

Detailed Description

The following describes in detail embodiments of the present invention with reference to the drawings.

The technical scheme of the invention is a reusable multifunctional small-sized throwing type fire extinguisher, figure 1 is an appearance structure schematic diagram of the invention, and figure 2 is a connection structure schematic diagram of a timer, an exciter and a nozzle communicating device. The reusable small-sized throwing fire extinguisher is designed to be elliptical in appearance and comprises a timer 5, the main body of the throwing fire extinguisher is a steel cylinder 1, a top cover on the steel cylinder 1 is arranged on a steel cylinder 1, the timer 5, a starter and a fire extinguishing agent container 12 are sequentially arranged in the steel cylinder 1 from top to bottom, the timer 5 comprises a rotating shaft 14, the starter comprises an exciter and a nozzle communicating device, the exciter and the nozzle communicating device are sequentially fixed on the rotating shaft 14 at intervals, the fire extinguishing agent container 12 is arranged in the fire extinguishing agent container 12, a nozzle part 18 is arranged at the upper part of the fire extinguishing agent container 12, a nozzle 19 is arranged at the nozzle part 18, a safety handle 6 is arranged outside the steel cylinder 1, the safety handle 6 is connected to the timer 5 through a cord 7, a spiral spring which is wound in a contracting mode is fixed, the safety handle 6 is pulled down, the timer 5 starts rotating bucket to rotate and the timer 5 starts to time, the fire extinguisher is thrown to a fire scene, the fire extinguishing agent is sprayed out of the fire extinguisher through the nozzle 19 during the throwing process.

Among the multi-functional small-size throw type fire extinguisher, the valve body pressure that arouses the ware to include rotatory pressure disk 8 and be connected with 19 below valve bodies 10 of spout 11, and 5 pivot 14 middle parts of timer are connected with rotatory pressure disk 8, and it is provided with the gradually protruding rib of pressing of arc 8 to change pressure disk lower surface, and the gradually protruding rib of pressing of arc 8's thickness increases along with the circular arc gradually, and the gradually protruding rib of pressing of arc sets up the valve body pressure under 8 and 11, and the gradually protruding rib of pressing of arc 8 presses the valve body pressure to arouse the change of pressure of extinguishing agent container 12 behind 11.

In the multifunctional small-sized throwing fire extinguisher, a nozzle 19 is arranged on a nozzle part 18, the upper opening of the nozzle 19 is opposite to the lower opening of an inner nozzle 16, a nozzle communicating vessel is arranged between the upper opening and the lower opening, and figure 3 is a schematic view of the bottom structure of a rotary pressure plate and an arc-shaped gradually convex pressure rib. FIG. 4 is a view showing the relationship between the communicating hole of the turntable and the fixing position of the rotating shaft. The nozzle communicating device is a rotating disc 13, a communicating hole 15 is formed in the rotating disc 13, a rotating shaft 14 is connected to the rotating disc 13, the rotating disc 13 rotates by taking the rotating shaft 14 as a center, the communicating hole 15 is arranged by deviating from the axis of the rotating shaft, an inner nozzle 16 is communicated with an outer nozzle 17, the rotating shaft 14 penetrates through a rotating pressure disc 8 and the inner nozzle 16 and is connected to the rotating disc 14, the rotating shaft 14 is fixedly connected with the rotating pressure disc 8 and the rotating disc 14, 8a is a rotating shaft hole I for connecting the rotating pressure disc 8 with the rotating shaft 14, 13a is a rotating shaft hole II for connecting the rotating shaft 14 with the rotating disc 13 and is rotatably connected with the inner nozzle 16, when the safety handle 6 is pulled down in use, the rotating disc 13 rotates under the driving of the rotating shaft 14 of the timer 5, the communicating hole 15 of the rotating disc 13 stops after rotating to the position corresponding to the nozzle 19 and the inner nozzle 16, and the nozzle 19 is communicated with the outer nozzle 17.

In addition, the nozzle 19 may be disposed on a circular metal plate, and the circular metal plate is fixedly and hermetically connected with the fire extinguishing agent container 12, so that the sealing performance inside the fire extinguishing agent container 12 is further improved.

In the multi-functional small-size throw type fire extinguisher, fire extinguishing agent container 12 upper surface is provided with sealed lid 25 that floats, 19 downside of spout are fixed with the 20 upper ends of step-like spray tube, and step-like spray tube 20 is thick about thin, 22 is the thick pipe, 23 is the tubule, is provided with 20 holes in the sealed lid 25 that floats, 20 downthehole sealing sleeve 26 that are provided with in the spray tube, and step-like spray tube 20 passes through 20 holes in the spray tube and extends to fire extinguishing agent container 12, is provided with valve body 10 in the step-like spray tube 20, and valve body 10 switch is connected to valve body pressure handle 11, valve body 10 is the check valve.

In the multi-functional small-size throw type fire extinguisher, the thickness increase direction of the gradually protruding pinch bar 8 of arc is opposite with the direction of rotation of rotatory pressure disk 8.

In the multi-functional small-size throw type fire extinguisher, the surface of steel bottle 1 is located outer nozzle 17 department and is the concave tapering structure, is provided with bottle plug 3 on the outer nozzle 17, and 1 surface of steel bottle is provided with inside manometer 4, the 12 inner walls of fire extinguishing agent container are the alumina coating.

In the multifunctional small-sized throwing fire extinguisher, a clockwork spring is arranged in the timer 5, and the clockwork spring is in a tensioning state when the safety handle 6 is pulled down and has elasticity.

In the multifunctional small-sized throwing fire extinguisher, before the safety handle 6 is not pulled out, the floating sealing cover 25 is arranged at the lower side of the step 21 part, the sealing sleeve 26 is of a core-supplementing structure, the large diameter part of the sealing sleeve 26 is arranged at the upper side of the floating cover, the thin part of the sealing sleeve 26 is sleeved in the hole of the spray pipe 20, and the inner diameter of the sealing sleeve 26 is consistent with the outer diameter of the thin pipe of the stepped spray pipe 20.

Example 1

Fig. 5 is a schematic sectional view of a throw-type foam extinguisher. In the multifunctional small-sized throwing type fire extinguisher, the throwing type fire extinguisher is a foam fire extinguisher, a metal supporting plate 28 is arranged at the middle upper part of a fire extinguishing agent container 12, a plurality of reaction agent containers 30 are arranged on the supporting plate, a floating sealing cover 25 is connected with the metal supporting plate 28 or the reaction agent containers 30 through a chain rope 29, gas is filled in the fire extinguishing agent container 12, after a valve body pressing handle 11 is pressed down, the pressure of the fire extinguishing agent container 12 is changed, the floating sealing cover 25 floats upwards, the metal supporting plate 28 or the reaction agent containers 30 are pulled, the metal supporting plate 28 and the reaction agent containers 30 fall off or tip to the bottom, the floating sealing cover 25 floats upwards until the step 21 part stops, the reaction agents start to react, a plurality of reaction agents are fully mixed and react in the throwing process, and foam is sprayed out of an outer nozzle 17.

The fire extinguisher is designed into a throw type foam fire extinguisher, a metal supporting plate 28 is arranged at the middle upper part of a fire extinguishing agent container 12, a plurality of reactant containers 30 are arranged on the supporting plate, gas is filled in the fire extinguishing agent container 12, after a valve body pressing handle 11 is pressed down, the internal pressure changes or drives the metal supporting plate 28 or the reactant containers 30, the metal supporting plate 28 or the reactant containers 30 can fall off and turn over to the bottom of the fire extinguishing agent container 12, the reactants are mixed and react to generate the sprayed foam, the sprayed foam extinguishing agent can play a role of cooling and suffocating open fire, namely a continuous foam layer is formed on the surface of the burning object, the surface of the burning object is cooled through the foam and the separated mixed liquid, and the burning object is isolated from oxygen through the covering effect of the foam layer to extinguish fire.

The fire extinguishing principle of the foam fire extinguisher is that a great amount of carbon dioxide and foam can be sprayed out when the fire is extinguished, and the carbon dioxide and the foam can be adhered to combustible substances to isolate the combustible substances from air, so that the purpose of extinguishing the fire is achieved. The fire extinguishing principle equation of the chemical foam fire extinguisher in the embodiment is that Al2(SO4)3+6NaHCO3= =3Na2SO4+2Al (OH)3 ↓ +6CO2 ↓ ] blows out dry powder filled in the chemical foam fire extinguisher by utilizing CO2 generated by reaction and a certain amount of CO2 gas filled in the chemical foam fire extinguisher in advance: compressed carbon dioxide blown dry powder (sodium bicarbonate as a main component) 2NaHCO3= = = = high temperature = = = = = = = Na2CO3+ CO2+ H2O absorbs heat when decomposed, and generated CO2 and H2O are used for extinguishing fire. The chemical foam fire extinguisher is internally provided with two reactant containers 30 which are respectively used for containing two liquids, namely aluminum sulfate solution and sodium bicarbonate solution, which are respectively placed in an inner cylinder and an outer cylinder, wherein the inner cylinder is internally provided with Al2(SO4)3, the outer cylinder is internally provided with NaHCO3, the two solutions are not contacted with each other and do not generate any chemical reaction. The fire extinguisher is to prevent the foam fire extinguisher from being knocked down at ordinary times, when the foam fire extinguisher needs to be thrown, the safety handle 6 of the throw type fire extinguisher is pulled out, the two solutions are mixed together, a large amount of carbon dioxide gas is generated, and besides the two reactants, some foaming agents are added into the fire extinguisher. The foaming agent can enable the foam fire extinguisher to spray a large amount of carbon dioxide and foam when the switch is opened, and the foam fire extinguisher can be adhered to burning objects, so that burning substances are isolated from air, the temperature is reduced, and the purpose of fire extinguishment is achieved.

The small-sized throwing fire extinguisher can utilize the principle that two solutions are not in contact with each other, the fire extinguisher safety handle 6 can be pulled out when meeting a fire, the two solutions are fully fused by the dead time during throwing and the collision after falling to the ground, and the foaming agent in the small-sized throwing fire extinguisher is extruded by the high pressure in the small-sized throwing fire extinguisher.

Example 2

Fig. 6 is a schematic sectional view showing a throw-type dry chemical extinguisher. In the multifunctional small-sized throwing-type fire extinguisher, the throwing-type fire extinguisher is a dry powder fire extinguisher, dry powder is filled in the fire extinguishing agent container 12, gas is filled in the fire extinguishing agent container, after the valve body pressing handle 11 is pressed down, the pressure of the fire extinguishing agent container 12 changes, the floating sealing cover 25 floats upwards until the step 21 stops, and after the fire extinguishing agent is thrown, the dry powder is sprayed out of the outer nozzle 17.

The fire extinguisher is designed into a throwing type dry powder fire extinguisher, dry powder is arranged in a fire extinguishing agent container 12 and is filled with gas, after a valve body is pressed down to press a handle 11, pressure change occurs in the fire extinguishing agent container 12, after the fire extinguishing agent is thrown, the dry powder is sprayed out of an outer nozzle 17, and the dry and easy-flowing fine powder is composed of inorganic salt with fire extinguishing effect and a small amount of additive, is dried, crushed and mixed to form fine solid powder, can play a role in inhibiting chemical reaction and suffocation, and can be used for putting out metal fire. The dry powder fire extinguishing agent contacts with flame under the action of pressurized gas in the fire extinguishing agent container 12, chemical inhibition and negative chemical catalysis are generated between the sprayed powder fog and flame by means of volatile decomposition products of inorganic salt in the dry powder and free radicals or active radicals generated by combustion substances in the combustion process, the chain reaction of combustion is interrupted to extinguish fire, and the powder of the dry powder drops on the surface of combustible to generate chemical reaction and form a covering layer under the action of high temperature, so that oxygen is isolated from suffocation and fire extinguishment is realized.

The reaction equation of the dry powder extinguishing agent in the embodiment is as follows:

3NaOH +2AlCl3+3NaHCO3= = = =2Al (OH)3 ↓ +3CO2 ═ 6NaC is subjected to chemical inhibition and negative catalysis by volatile decomposition products of inorganic salts in dry powder and free radicals or active groups generated by fuel in a combustion process, so that a combustion chain reaction is interrupted to extinguish fire, the powder is subjected to chemical reaction after falling on the surface of the combustible, and a glassy covering layer is formed under the action of high temperature, so that oxygen is isolated, and fire is extinguished. In addition, there is some dilution of oxygen and cooling. The dry powder fire extinguisher is filled with ammonium phosphate dry powder fire extinguishing agent, the fire extinguishing agent is dry and easy-to-flow fine powder, and is formed by drying, crushing and mixing inorganic powder with fire extinguishing effect. It is a fire extinguishing agent widely used in fire fighting and is mainly used in fire extinguishers. Except for special dry powder chemical fire extinguishing agent for extinguishing metal fire, the dry powder fire extinguishing agent is generally divided into BC dry powder fire extinguishing agent (sodium bicarbonate) and ABC dry powder.

The fire extinguisher is convenient for throwing and ensures that the pressure inside the fire extinguisher can be stable. The dry powder type fire extinguishing agent is basically similar to the existing common dry powder fire extinguishing agent, but in order to increase the fire extinguishing effect and speed, the ammonium phosphate salt superfine dry powder fire extinguishing agent prepared by adopting a water phase synthesis method is added in the dry powder fire extinguishing agent, ammonium dihydrogen phosphate is used as a main material of the dry powder fire extinguishing agent, and auxiliary materials such as talcum powder, mica powder, activated clay, silicone oil, white carbon black, sodium silicate and the like are added to prepare the superfine ammonium phosphate salt dry powder fire extinguishing agent with the particle size of 100-500 nm. The dry powder extinguishing agent has low price and good extinguishing effect, and can generate great economic benefit and social benefit.

The steel cylinder 1 is used for the main body of the throwing fire extinguisher, the steel cylinder 1 can bear the original pressure in the cylinder and the pressure value of gas generated after reaction, the original pressure of the steel cylinder 1 can ensure that the steel cylinder can react with reactants to generate pressure to blow out the fire extinguishing agent together when the steel cylinder is still used after being stored for a long time, in addition, the fire extinguisher after being thrown is baked by the high temperature of a fire scene, the pressure in the steel cylinder 1 can be increased when the fire extinguisher is subjected to the high temperature, and the steel cylinder 1 has fire resistance and pressure resistance and can be recycled for reuse.

The timer 5 is arranged in the steel cylinder 1, so that a certain time can be kept after starting, the time required by the throwing process is saved, in addition, the timer 5 is fixed, the spiral spring in the timer 5 can rotate the rotating shaft 14, the part fixedly connected to the rotating shaft 14 can be driven to rotate along with the spiral spring, and the power of the spiral spring can be fully utilized;

through setting up the starter on 5 pivots 14 of timer, not only can utilize the exciter on the starter to make the pressure of the inside gas of fire extinguishing agent container 12 change, arouse inside physical action or the chemical reaction of taking place, increase internal pressure, can utilize the nozzle linker to communicate the inside and outside each other of steel bottle 1 in addition, can spray the fire extinguishing agent in steel bottle 1, make the fire extinguishing agent in the fire extinguishing agent container 12 spout out steel bottle 1 outside, suppress or put out the intensity of a fire.

Through setting up extinguishing agent container 12, can deal with the conflagration of different properties according to the kind of fire extinguisher, the different kinds of extinguishing agent of equipment, can prevent because of the improper other injuries that cause of extinguishing agent.

The exciter is designed into the arc-shaped gradually-convex pressing rib 8, so that the exciter can press down the valve body pressing handle 11, gas in the fire extinguishing agent container 12 is changed, and physical or chemical reaction or action is excited.

Through designing the nozzle communicating vessel into a rotary table 13, and offer the intercommunicating pore 15 on the rotary table 13, can be under the drive of the axis of rotation 14 the rotary table 13 rotates after the timer 5 starts, when the intercommunicating pore 15 on the rotary table 13 rotates to the spout 19 and the inner nozzle 16 position that set up relatively up from top to bottom, before the timing end, produce huge internal pressure after the internal physical action or the chemical reaction, can spout the fire extinguishing agent.

The thickness increasing direction of the gradually convex pressing rib 8 through the arc is opposite to the rotating direction of the rotating pressure plate 8, the thickness of the gradually convex pressing rib 8 through the arc can be gradually thickened in the timing process, the valve body pressing handle 11 can be gradually pressed down, the gas stored in the inner part can be gradually changed, and when the communicating hole 15 rotates to the relative position of the nozzle 19 and the inner nozzle 16, the gas pressure change can enable the inner part to generate physical action or chemical reaction.

Through be provided with safety 6 outside steel bottle 1, safety 6 is connected to timer 5 with cotton rope 7, locks the clockwork spring that the shrink was coiled, can guarantee under the not in-use condition that the fire extinguisher does not react, can not produce new internal pressure yet, only through pulling out safety 6, the elasticity is released to the originally fixed winding clockwork spring that contracts, timer 5 begins to start, can guarantee that there is inside the fire extinguishing agent to carry out physical action or chemical reaction or throw the fire extinguisher time.

By arranging the communicating hole 15 on the rotary disc 13 and arranging the communicating hole 15 at a position opposite to the position of the nozzle 19 and the inner nozzle 16 before the timer 5 is started, certain pressure can be generated in the fire extinguishing agent container 12, and reaction time and throwing time can be obtained.

By arranging the floating sealing cover 25 on the upper surface of the fire extinguishing agent container 12, the volume of the fire extinguishing agent container 12 can be expanded by floating the floating sealing cover 25, and a certain reaction process of the fire extinguishing agent can be given.

Through set up benefit heart form seal sleeve 26 in the sealed lid 25 upper surface spray tube 20 hole that floats, can float the sealed lid 25 and go up the in-process and make all the time to keep the encapsulated situation between the sealed lid 25 that floats and the step-like spray tube 20, can drive the sealed lid 25 that floats and rise, play sealed effect, win reaction time and throw time.

The spray pipe 20 is designed to be step-shaped and to be thin at the bottom and thick at the top, so that the spray pipe can stop moving after floating on the floating sealing cover 25 to the step 21, the internal pressure at the position also reaches a certain height to achieve the fire extinguishing degree, and then the fire extinguishing agent reacts during the throwing or landing process to generate new pressure change, so that the internal fire extinguishing agent can be sprayed out.

A nozzle 19 is provided on the upper part of the fire extinguishing agent container 12, a stepped nozzle 20 is provided under the nozzle 19, a valve body 10 is provided at the nozzle 20, the nozzle 20 can ensure the fire extinguishing agent to be sprayed in sequence, and the valve body 10 can ensure the sealing condition of the inside or the opening condition in the non-opening state.

Through designing into concave taper structure with 1 outer surface of steel bottle outer nozzle 17 department, be provided with bottle plug 3 on the outer nozzle 17, bottle plug 3 is when the fire extinguisher does not use, closely laminate with the oval top in outside of fire extinguishing agent, can prevent the condition of gas leakage decompression, lead to the unable normal use of fire extinguisher after the throw, bottle plug 3 is fallen to the ground at the throw and is pushed out bottle plug 3 with its inside pressure after falling to the ground, because its inside pressure is greater than external pressure, in addition the vibrations after falling to the ground, bottle plug 3 can be popped out.

Through being provided with inside manometer 4 at 1 surface of steel bottle, be favorable to knowing 1 internal pressure situation of steel bottle, be favorable to regularly checking, can judge the usable condition of fire extinguisher.

The aluminum oxide coating is formed on the inner wall of the fire extinguishing agent container 12, so that the erosion of the inner wall in the process of spraying the fire extinguishing agent can be improved, the abrasion resistance of the inner wall is improved, the repeated use times are improved, and the strength of the steel cylinder 1 is ensured;

by designing the sealing sleeve 26 to be a bushing-shaped structure, the floating sealing cover 25 can play a sealing role in the floating process, and can still play a sealing role in the step part after reaching the step 21 part.

The invention has the characteristic of recoverability of the steel cylinder, can reduce the weight of fire extinguishing equipment, simplify operation steps, omit operation training, can implement fire extinguishing operation at a position far away from a fire scene, can reduce the possibility of causing injury to fire extinguishing personnel, can solve the problem that fire extinguishing cannot be implemented due to large fire intensity, strong wind power and short time or the fact that dangerous objects are difficult to approach, can improve the fire extinguishing speed, and can reduce property loss and life loss caused by fire.

Claims (8)

1. The utility model provides a but reuse's multi-functional small-size throw type fire extinguisher, includes the timer, its characterized in that: the main body of the throwing type fire extinguisher is a steel cylinder, a timer, a starter and a fire extinguishing agent container are sequentially arranged in the steel cylinder from top to bottom, the timer comprises a rotating shaft, the starter comprises an exciter and a nozzle communicating device, the exciter and the nozzle communicating device are sequentially fixed on the rotating shaft at intervals, a nozzle part is arranged at the upper part of the fire extinguishing agent container, a nozzle is arranged at the nozzle part, a safety handle is arranged outside the steel cylinder, the safety handle is connected to the timer through a cord, a timer spring which is coiled in a locking and contracting mode is locked, when the throwing type fire extinguisher is used, the safety handle is pulled down, the timer starts to rotate and count time, the fire extinguisher is thrown to a fire scene, the fire extinguishing agent is sprayed out of the fire extinguisher through the nozzle during throwing, the exciter comprises a rotary pressure plate and a valve body pressure handle connected with a valve body below the nozzle, the middle part of the rotating shaft of the timer is connected with the rotary pressure plate, an arc-shaped gradually-shaped convex pressure rib is arranged on the lower surface of the rotary pressure plate, and the thickness of the arc-shaped gradually increases along with the arc, the fire extinguishing device is characterized in that a valve body pressing handle is arranged under an arc-shaped gradually-convex pressing rib, the arc-shaped gradually-convex pressing rib presses the valve body pressing handle to excite pressure change in a fire extinguishing agent container, the nozzle is arranged on the nozzle portion, the nozzle is arranged opposite to the lower portion of the inner nozzle, a nozzle communicating device is arranged between the nozzle and the inner nozzle, the nozzle communicating device is a rotary disc, a communicating hole is formed in the rotary disc, the rotary disc is connected to the rotary disc, the rotary disc rotates by taking the rotary shaft as the axis, the communicating hole deviates from the axis, the inner nozzle is communicated with the outer nozzle, after the safety handle is pulled out, the rotary disc rotates under the driving of the rotary shaft of the timer, the communicating hole of the rotary disc deviating from the axis stops after the communicating hole of the nozzle and the inner nozzle are opposite to each other, and the nozzle and the outer nozzle are communicated.

2. The multifunctional small-sized throw-type fire extinguisher capable of being reused according to claim 1, wherein: the fire extinguishing agent container is characterized in that a floating sealing cover is arranged on the upper surface of the fire extinguishing agent container, the lower side of the nozzle is fixed with the upper end of a step-shaped spray pipe, the step-shaped spray pipe is thick on the upper portion and thin on the lower portion, a spray pipe hole is formed in the floating sealing cover, a sealing sleeve is arranged in the spray pipe hole, the step-shaped spray pipe extends into the fire extinguishing agent container through the spray pipe hole, a valve body is arranged in the step-shaped spray pipe, a valve body switch is connected to a valve body pressing handle, and the valve body is a one-way valve.

3. The multifunctional small-sized throw-type fire extinguisher capable of being reused according to claim 2, wherein: the throwing type fire extinguisher is a foam fire extinguisher, a metal supporting plate is arranged at the middle upper part of a fire extinguishing agent container, a plurality of reaction agent containers are arranged on the metal supporting plate, a floating sealing cover is connected with the metal supporting plate or the reaction agent containers through a chain rope, gas is filled in the fire extinguishing agent container, after a valve body is pressed down, the pressure of the fire extinguishing agent container changes, the floating sealing cover floats upwards until a step part stops, the metal supporting plate falls to the bottom, the reaction agents start to react, in the throwing process, the plurality of reaction agents are fully mixed and react, and foam is sprayed out of an outer nozzle.

4. The multifunctional small-sized throw-type fire extinguisher capable of being reused according to claim 2, wherein: the throwing type fire extinguisher is a dry powder fire extinguisher, dry powder is filled in the fire extinguishing agent container, after the valve body is pressed down and the handle is pressed down, the pressure of the fire extinguishing agent container changes, the floating sealing cover floats upwards until the step part stops, and after the throwing type fire extinguisher is thrown, the dry powder is sprayed out of the outer nozzle.

5. The multifunctional small-sized throw-type fire extinguisher capable of being reused according to claim 1, wherein: the outer surface of the steel cylinder is located at the outer nozzle and is of a concave taper structure, a bottle plug is arranged on the outer nozzle, an internal pressure gauge is arranged on the outer surface of the steel cylinder, and the inner wall of the fire extinguishing agent container is an aluminum oxide coating.

6. The multifunctional small-sized throw-type fire extinguisher capable of being reused according to claim 1, wherein: a clockwork spring is arranged in the timer, the clockwork spring before being pulled out is in a tensioning state, and the clockwork spring has elasticity.

7. The multifunctional small-sized throw-type fire extinguisher capable of being reused according to claim 2, wherein: before the throwing type fire extinguisher is not pulled out of the safety handle, the floating sealing cover is arranged on the lower side of the step, the sealing sleeve is of a bushing-shaped structure, the thick part of the sealing sleeve part is positioned on the upper side of the floating cover, the thin part of the sealing sleeve is sleeved in the spray pipe hole, and the inner diameter of the sealing sleeve is consistent with the outer diameter of the thin pipe of the stepped spray pipe.

8. The multifunctional small-sized throw-type fire extinguisher capable of being reused according to claim 1, wherein: the thickness of the gradually protruding pressure muscle of arc increases the opposite direction with the direction of rotation of rotatory pressure disk.

Images