CN114210008B

CN114210008B - Fire extinguishing device for fire engineering

Info

Publication number: CN114210008B
Application number: CN202111605748.0A
Authority: CN
Inventors: 张苑
Original assignee: Shenzhen Huatai Construction Engineering Co ltd
Current assignee: Shenzhen Huatai Construction Engineering Co ltd
Priority date: 2021-12-25
Filing date: 2021-12-25
Publication date: 2022-08-23
Anticipated expiration: 2041-12-25
Also published as: CN114210008A

Abstract

The invention discloses a fire extinguishing device for fire engineering, which comprises a base, wherein a lifting plate capable of lifting is arranged at the top of the base, an inner toothed ring is fixed at the top of the lifting plate through a fixed rod, a plurality of nozzles capable of spraying water are arranged on the outer wall of the inner toothed ring, the nozzles are distributed annularly, a powder spraying box for containing flame-retardant powder is fixed at the top of the lifting plate through a supporting rod, and a powder spraying port is formed in the outer wall, close to the inner toothed ring, of the powder spraying box; the powder spraying device also comprises an inflation assembly for inflating the powder spraying box. The fire extinguishing device can further improve the speed and efficiency of fire extinguishing through the matching of the structures and the double matching of water and flame-retardant powder, and after the fire extinguishing device is mixed with water, the powder can form a pasty isolating layer on the surface of a combustion object, so that the effect of isolating oxygen can be further achieved, the combustion object can be effectively prevented from being re-combusted, and the hidden danger of secondary fire is avoided.

Description

Fire extinguishing device for fire engineering

Technical Field

The invention relates to the technical field of fire-fighting engineering, in particular to a fire extinguishing device for the fire-fighting engineering.

Background

Fire is one of the major disasters that most often, most commonly, threaten public safety and social development. Particularly in the current society developing at a high speed, fire can be caused by various factors, if the fire is a small fire, the fire can be extinguished manually, but if the fire occurs in some factories or workshops and other places, fire fighters are required to extinguish the fire on the fire scene so as to prevent other accidents.

However, most of the existing common fire extinguishing devices adopt a water spray cooling mode to extinguish fire, and the temperature of the surface of a combustion object is reduced below a burning point, so that the purpose of extinguishing fire is achieved.

Disclosure of Invention

The invention aims to provide a fire extinguishing device for fire engineering, wherein powder is mixed with water, and the powder can form a pasty isolating layer on the surface of a combustion object, so that the effect of isolating oxygen can be further achieved, the combustion object can be effectively prevented from being re-combusted, the hidden danger of secondary fire is avoided, and the problems in the background art are solved.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a extinguishing device for fire-fighting engineering, includes the base, the lifter plate of liftable is installed at the top of base, the top of lifter plate is fixed with interior ring gear through the dead lever, a plurality of shower nozzles that can spray water are installed to the outer wall of interior ring gear, just the shower nozzle is the annular and distributes, the top of lifter plate is fixed with the case of dusting that is used for adorning fire-retardant powder through the bracing piece, the outer wall that the case of dusting is close to interior ring gear has seted up the mouth of dusting.

The powder spraying device also comprises an inflation assembly for inflating the powder spraying box.

Preferably, the internally mounted of case of dusting has rotatable axis of rotation, the outer wall of case both sides of dusting is worn out respectively at the both ends of axis of rotation, and is connected with the case of dusting runs through the department and rotates, the one end that the axis of rotation is close to interior ring gear is fixed with the rotor plate, the outer wall that the axis of rotation was kept away from to the rotor plate rotates and installs the gear, the tooth of gear meshes with the inner tooth groove of interior ring gear mutually, the outer wall of gear is seted up the elongated slot that can supply powder spraying mouth spun to pass, the outer wall that the rotor plate is close to the case of dusting is fixed with the baffle, just the baffle laminates with the outer wall of case of dusting, works as can make baffle intermittent type nature shelter from the mouth of dusting when the rotor plate rotates.

Preferably, the outer wall that interior ring gear is close to the case of dusting is fixed with the collar, a plurality of elastic bags that are the annular and distribute are installed to the inner ring outer wall of collar, just one-to-one between elastic bag and the shower nozzle, the intercommunication has the raceway that can make water one-way flow in the shower nozzle between elastic bag and the shower nozzle that corresponds, the outer wall of collar is fixed with the ring pipe, the intercommunication has the inlet tube that can make water one-way flow in the elastic bag between ring pipe and each elastic bag, the storage water tank is installed at the top of base, be linked together through the water service pipe between storage water tank and the ring pipe, the outer wall of gear is fixed with the extrusion ring, works as the gear can make the extrusion ring roll the extrusion to elastic bag when rotating.

Preferably, the inflation assembly comprises a piston pipe, the piston pipe is fixed on the outer wall of the powder spraying box far away from the inner gear ring, a piston plate capable of sliding back and forth is installed on the inner wall of the piston pipe through a flat key, an air inlet channel capable of enabling air to be extruded into the powder spraying box in a single direction is formed between the piston pipe and the powder spraying box, an air suction channel capable of enabling air to enter the piston pipe in a single direction is formed in the outer wall of the piston plate, and when the baffle shields the powder spraying opening, the piston plate can slide towards the direction close to the powder spraying box.

Preferably, the inflation assembly comprises an air pump arranged at the top of the lifting plate, and the air pump is communicated with the powder spraying box through an air conveying pipe.

Preferably, the outer wall of the rotation shaft far away from the powder spraying box is fixed with a cylinder, the cylindrical outer wall is provided with a curved groove, the piston plate is fixed with a movable pipe close to the cylindrical outer wall, the movable pipe sleeve is arranged on the cylindrical outer wall, the inner wall of the movable pipe is fixed with a sliding block, and the sliding block extends into the curved groove and is in sliding connection with the inner wall of the curved groove.

Preferably, an expansion link is installed between the base and the lifting plate, and universal wheels with brake pads are installed at the bottom of the base.

Preferably, a spring is installed inside the elastic bag.

Preferably, the motor is installed at the top of the lifting plate through a support frame, and one end, far away from the powder spraying box, of the rotating shaft is coaxially and fixedly connected with an output shaft of the motor.

Compared with the prior art, the invention has the following beneficial effects:

firstly, the invention can reduce the surface temperature of the burning objects to be lower than the burning point through the matching of the structures and the water sprayed by the spray head to form a conical water mist, thereby playing the effect of fire extinguishing, on the other hand, the invention can play a certain role of blocking the toxic gas generated by burning and the ash in the air to prevent the burning objects from floating, and the flame-retardant powder is sprayed out through the powder spraying port to be attached to the surface of the burning objects to play a certain role of isolating oxygen, thereby further improving the speed of fire extinguishing.

The powder sprayed from the powder spraying port is positioned in the middle of the conical water mist through the matching of the structures, so that the powder can be heavier after being wetted, the falling of the powder is accelerated, the powder can be effectively prevented from flying, the fire extinguishing speed and efficiency can be further improved through the double matching of the water and the flame-retardant powder, and after the powder is mixed with the water, a pasty isolating layer can be formed on the surface of a combustion object, the effect of isolating oxygen can be further achieved, the combustion object can be effectively prevented from being re-combusted, and the hidden danger of secondary fire is avoided.

Drawings

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic cross-sectional view taken along line A-A of FIG. 1 in accordance with the present invention;

FIG. 3 is an enlarged cross-sectional view taken at B in FIG. 2 according to the present invention;

FIG. 4 is a front, left side perspective view of the present invention;

FIG. 5 is a front right side perspective view of the present invention;

FIG. 6 is a schematic cross-sectional perspective view of the FIG. 5 view of the present invention;

FIG. 7 is a schematic perspective view of a second embodiment of an inflation assembly of the present invention.

In the figure: 1. a base; 2. a telescopic rod; 3. a lifting plate; 4. a motor; 5. a cylinder; 6. a rotating shaft; 7. a movable tube; 8. a piston tube; 9. a powder spraying box; 10. a mounting ring; 11. an inner gear ring; 12. a spray head; 13. an annular tube; 14. a water pipe; 15. a water storage tank; 16. a support frame; 17. a powder spraying port; 18. an elastic bag; 19. a rotating plate; 20. a baffle plate; 21. a spring; 22. a squeezing ring; 23. a gear; 24. a piston plate; 25. a curved groove; 26. a slider; 27. an air intake passage; 28. an air suction passage; 29. a gas delivery pipe; 30. an air pump.

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.

Referring to fig. 1 to 7, the present invention provides a technical solution: the utility model provides a extinguishing device for fire-fighting engineering, includes base 1, and the lifter plate 3 of liftable is installed at base 1's top, and the top of lifter plate 3 is fixed with interior ring gear 11 through the dead lever, and a plurality of shower nozzles 12 that can spray water are installed to the outer wall of interior ring gear 11, and shower nozzle 12 is the annular and distributes, and the top of lifter plate 3 is fixed with the case 9 that dusts that is equipped with fire-retardant powder through the bracing piece, and the mouth 17 that dusts has been seted up near the outer wall of interior ring gear 11 to the case 9 that dusts.

And the powder spraying device also comprises an air inflation assembly for inflating the powder spraying box 9.

In the first embodiment, when a fire occurs, the device is moved to a fire extinguishing site, then the height of the lifting plate 3 can be adjusted through an external structure, the spray head 12 can be aligned above a fire source, then water is sprayed to a fire catching place through the spray head 12, so that the surface temperature of a burning object is reduced and is reduced to be lower than a burning point, a fire extinguishing effect is achieved, the spray head 12 can face outwards, and water sprayed from the spray head 12 forms a conical water mist due to the fact that the spray head 12 is distributed annularly, and therefore a certain blocking effect can be achieved on toxic gas generated by burning and ash in air, and the burning object can be prevented from flying in a mess.

Meanwhile, aerify in case 9 to dusting through the gas charging component, then the atmospheric pressure grow in case 9 dusts, fire-retardant powder in it is spout from mouth 17 of dusting, make it adhere to the surface of burning thing, can play the effect of certain isolated oxygen, thereby can reduce the intensity of a fire, and because mouth 17 of dusting spun powder is in the centre of taper water smoke, can become heavy after so can being stained with water by the powder, thereby accelerate the whereabouts of powder, can also prevent effectively that the powder from flying upward, through the double cooperation of water and fire-retardant powder like this, can further improve the speed and the efficiency of putting out a fire, and after mixing with water, the powder can form the pasty isolation layer of one deck on the surface of burning thing, can further play the effect of isolated oxygen, and then can effectually prevent the burning thing from reburning, the hidden danger of secondary fire has been avoided.

Furthermore, a rotatable rotating shaft 6 is installed inside the powder spraying box 9, two ends of the rotating shaft 6 penetrate through outer walls of two sides of the powder spraying box 9 respectively and are rotatably connected with a penetrating position of the powder spraying box 9, a rotating plate 19 is fixed at one end, close to the inner toothed ring 11, of the rotating shaft 6, a gear 23 is installed on the outer wall, far away from the rotating shaft 6, of the rotating plate 19 in a rotating mode, teeth of the gear 23 are meshed with inner toothed grooves of the inner toothed ring 11, a long groove for powder sprayed from the powder spraying port 17 to pass through is formed in the outer wall of the gear 23, a baffle 20 is fixed on the outer wall, close to the powder spraying box 9, of the rotating plate 19, the baffle 20 is attached to the outer wall of the powder spraying box 9, and when the rotating plate 19 rotates, the baffle 20 can intermittently shield the powder spraying port 17.

The rotating shaft 6 is driven to rotate through an external structure, then the rotating shaft 6 rotates to drive the rotating plate 19 to rotate, so that the gear 23 is driven to rotate, and since the teeth of the gear 23 are meshed with the internal tooth grooves of the internal tooth ring 11, the gear 23 rotates along the internal tooth grooves of the internal tooth ring 11 while rotating along with the rotating plate 19.

When the rotating plate 19 rotates, the baffle plate 20 can be driven to rotate circularly together, so that the powder spraying port 17 is intermittently shielded, the inflation assembly continuously inflates the powder spraying box 9, the air pressure in the powder spraying box 9 is continuously increased, then the flame-retardant powder is sprayed out from the powder spraying port 17 under the action of high pressure, and the baffle plate 20 indirectly shields the powder spraying port 17, so that the air pressure in the powder spraying box 9 can be accumulated, and then the powder is sprayed out from the powder spraying port 17, so that the powder spraying distance is prolonged, on the other hand, some powder can be remained at the powder spraying port 17, and the residual powder at the powder spraying port 17 can be cleaned by the rotation of the baffle plate 20 every time, so that the blockage of the powder spraying port 17 is avoided.

Furthermore, an installation ring 10 is fixed on the outer wall of the inner gear ring 11 close to the powder spraying box 9, a plurality of elastic bags 18 distributed in an annular shape are installed on the outer wall of the inner ring of the installation ring 10, the elastic bags 18 correspond to the spray heads 12 one by one, water conveying pipes which enable water to flow into the spray heads 12 in a single direction are communicated between the elastic bags 18 and the corresponding spray heads 12, annular pipes 13 are fixed on the outer wall of the installation ring 10, water inlet pipes which enable water to flow into the elastic bags 18 in a single direction are communicated between the annular pipes 13 and the elastic bags 18, a water storage tank 15 is installed at the top of the base 1, the water storage tank 15 is communicated with the annular pipes 13 through water pipes 14, a squeezing ring 22 is fixed on the outer wall of the gear 23, and the squeezing ring 22 can roll and squeeze the elastic bags 18 when the gear 23 rotates.

When the gear 23 rotates along the internal tooth slot of the internal tooth ring 11, the gear 23 drives the extrusion ring 22 mounted thereon to rotate, so as to roll and extrude the elastic bag 18, the extruded elastic bag 18 can extrude the water in the elastic bag into the spray head 12 through the water pipe, and then the spray head 12 sprays, after the extrusion ring 22 is separated from the elastic bag 18, under the elasticity of the elastic bag 18, the elastic bag 18 can elastically recover, and simultaneously the water in the water storage tank 15 is sucked into the elastic bag 18 through the water inlet pipe, the annular pipe 13 and the water pipe 14, so as to complete the water supplement, so that the extrusion ring 22 can continuously extrude the elastic bag 18 along with the rotation of the gear 23, so that the spray head 12 achieves the rotary intermittent water spraying, and, as shown in fig. 2, when the extrusion ring 22 rotates to extrude the elastic bag 18 above the powder spraying port 17, at this time, the baffle 20 does not shield the powder spraying port 17, so that the powder sprayed from the powder spraying port 17 can adhere to the water sprayed from the spray head 12 above, can fall on the burning objects more quickly, thereby increasing the speed of fire extinguishing.

If the elastic bags 18 cannot rapidly distribute water through the annular pipe 13, each elastic bag 18 can be separately communicated with the water storage tank 15 through a water pipe, so that the annular pipe 13 cannot rapidly distribute water.

Further, the inflation assembly comprises a piston pipe 8, the piston pipe 8 is fixed on the outer wall of the powder spraying box 9 far away from the inner gear ring 11, a piston plate 24 capable of sliding back and forth is installed on the inner wall of the piston pipe 8 through a flat key, an air inlet channel 27 capable of enabling air to be extruded into the powder spraying box 9 in a single direction is arranged between the piston pipe 8 and the powder spraying box 9, an air suction channel 28 capable of enabling air to enter the piston pipe 8 in a single direction is arranged on the outer wall of the piston plate 24, and when the powder spraying opening 17 is shielded by the baffle plate 20, the piston plate 24 can slide towards the direction close to the powder spraying box 9.

The piston plate 24 is driven by an external mechanism to slide back and forth along the piston tube 8, then air is sucked into the piston tube 8 through the air suction channel 28, and then the air in the piston tube 8 is extruded into the powder spraying box 9 through the air inlet channel 27, so that the air pressure in the powder spraying box 9 is increased.

And when baffle 20 shelters from powder injection mouth 17, piston plate 24 can slide to the direction that is close to powder injection case 9, like this sealed powder injection case 9 is constantly aerifyd, makes inside atmospheric pressure save and increase gradually, then after baffle 20 crossed powder injection mouth 17, at this moment, under the high pressure effect in powder injection case 9, with this, piston plate 24 removes to the direction of keeping away from powder injection case 9, aerifys to the piston pipe 8 in through suction channel 28, can reach the effect of constantly aerifing in powder injection case 9 like this.

Moreover, when the powder spraying port 17 sprays powder, the air pressure in the powder spraying box 9 is reduced along with the powder spraying, so that the distance of the powder sprayed from the powder spraying port 17 is gradually shortened, the falling range of the powder is wider, and the fire extinguishing effect is further improved.

Further, the inflation assembly comprises an air pump 30 arranged on the top of the lifting plate 3, and the air pump 30 is communicated with the powder spraying box 9 through an air pipe 29.

In the second embodiment, different from the first embodiment, the air pump 30 is adopted as the air inflation assembly, the air pump 30 is started, and then the air is inflated into the powder spraying box 9 through the air pipe 29, so that compared with the air inflation assembly in the first embodiment, the inflation is relatively stable, but at the same time, the energy consumption is correspondingly increased, and thus, the air pressure of the powder spraying box 9 is increased compared with that in the first embodiment, the distance for spraying the powder is increased, and the larger fire can be eliminated.

Further, the outer wall that axle of rotation 6 kept away from powder box 9 is fixed with cylinder 5, and curve recess 25 has been seted up to cylinder 5's outer wall, and piston plate 24 is close to cylinder 5's outer wall and is fixed with movable pipe 7, and the cover of movable pipe 7 is established at cylinder 5 outer wall, and the inner wall of movable pipe 7 is fixed with slider 26, and slider 26 stretches into in the curve recess 25, and with the inner wall sliding connection of curve recess 25.

As shown in fig. 6, when the rotating shaft 6 rotates, the cylinder 5 is driven to rotate, and due to the limiting effect of the piston plate 24 on the movable tube 7, when the cylinder 5 rotates, the sliding block 26 is driven to slide along the curved groove 25, and at the same time, the sliding block 26 drives the movable tube 7 to slide back and forth, so as to drive the piston plate 24 to slide back and forth along the inner wall of the piston tube 8.

Further, install telescopic link 2 between base 1 and the lifter plate 3, the universal wheel that has the brake block is installed to the bottom of base 1.

Can carry or remove the device through the installation universal wheel to can arrive the scene of putting out a fire fast, then can adjust lifter plate 3's height through telescopic link 2, thereby can adapt to different environment, telescopic link 2 can adopt electric telescopic handle or cylinder etc..

Furthermore, the spring 21 is installed inside the elastic bag 18, the restoring degree of the elastic bag 18 can be further improved by the arrangement of the spring 21, and the elastic bag 18 can be quickly restored and pumped after being separated from the extrusion ring 22 through the elasticity of the elastic bag 18 and the elasticity of the spring 21, so that the speed of water spraying can be further improved.

Further, motor 4 is installed through support frame 16 in the top of lifter plate 3, and the one end that powder spraying box 9 was kept away from to axis of rotation 6 is coaxial fixed connection with the output shaft of motor 4, and through motor 4, the output shaft of motor 4 can drive axis of rotation 6 and rotate to can make axis of rotation 6 can steady rotation.

The working principle is as follows: this a extinguishing device for fire engineering uses, remove the device scene of putting out a fire through the universal wheel, then starter motor 4, motor 4's output shaft can drive axis of rotation 6 and rotate, when axis of rotation 6 pivoted, can drive cylinder 5 and rotate, because piston plate 24 is to the limiting displacement of movable tube 7, so when cylinder 5 rotated, can drive slider 26 and slide along curve recess 25, slider 26 still can drive movable tube 7 reciprocating sliding simultaneously, thereby drive piston plate 24 along the inner wall reciprocating sliding of piston tube 8, then inhale the piston tube 8 with the air through suction channel 28 in, again with the air in the piston tube 8 crowd into through inlet channel 27 in the case 9 that dusts, make the atmospheric pressure grow in the case 9 that dusts, under the high pressure effect in the case 9 that dusts, with the powder blowout.

The rotation shaft 6 rotates to drive the rotation plate 19 to rotate, thereby driving the gear 23 to rotate, and since the teeth of the gear 23 are engaged with the inner tooth grooves of the inner gear ring 11, the gear 23 rotates along the internal teeth grooves of the internal gear ring 11 while rotating with the rotating plate 19, and the gear 23 rotates the pressing ring 22 mounted thereon, thereby rolling and extruding the elastic bag 18, the extruded elastic bag 18 can extrude the water in the elastic bag into the spray head 12 through the water conveying pipe and then spray out from the spray head 12, then after the extrusion ring 22 is separated from the elastic bag 18, under the elasticity of the elastic bag 18, the elastic bag can elastically recover, and simultaneously, the water in the water storage tank 15 is sucked into the elastic bag 18 through the water inlet pipe, the annular pipe 13 and the water through pipe 14 to complete the water supplement, thus, the pressing ring 22 is continuously pressed against the elastic bag 18 along with the rotation of the gear 23, so that the spray head 12 is sprayed with water in a rotary and intermittent manner.

The standard parts used in the present embodiment may be purchased directly from the market, and the non-standard structural components described in the specification and drawings may be obtained by processing without any doubt according to the common general knowledge in the art, and the connection manner of the respective parts is by the conventional means developed in the art, and the machines, parts and equipment are of the conventional type in the art, so that the detailed description thereof is omitted.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A extinguishing device for fire engineering, includes base (1), its characterized in that: the top of the base (1) is provided with a lifting plate (3) capable of lifting, the top of the lifting plate (3) is fixedly provided with an inner toothed ring (11) through a fixing rod, the outer wall of the inner toothed ring (11) is provided with a plurality of spray heads (12) capable of spraying water, the spray heads (12) are distributed annularly, the top of the lifting plate (3) is fixedly provided with a powder spraying box (9) used for containing flame-retardant powder through a supporting rod, and the outer wall, close to the inner toothed ring (11), of the powder spraying box (9) is provided with a powder spraying port (17);

the powder spraying device also comprises an inflation assembly for inflating the powder spraying box (9);

a rotatable rotating shaft (6) is arranged in the powder spraying box (9), two ends of the rotating shaft (6) respectively penetrate through the outer walls of two sides of the powder spraying box (9), and is rotatably connected with the penetration part of the powder spraying box (9), one end of the rotating shaft (6) close to the inner gear ring (11) is fixed with a rotating plate (19), a gear (23) is rotatably arranged on the outer wall of the rotating plate (19) far away from the rotating shaft (6), the teeth of the gear (23) are meshed with the inner tooth grooves of the inner gear ring (11), the outer wall of the gear (23) is provided with a long groove through which powder sprayed from the powder spraying port (17) can pass, a baffle (20) is fixed on the outer wall of the rotating plate (19) close to the powder spraying box (9), the baffle (20) is attached to the outer wall of the powder spraying box (9), when the rotating plate (19) rotates, the baffle plate (20) can intermittently shield the powder spraying port (17);

an installation ring (10) is fixed on the outer wall of the inner gear ring (11) close to the powder spraying box (9), a plurality of elastic bags (18) which are distributed annularly are arranged on the outer wall of the inner ring of the mounting ring (10), the elastic bags (18) are in one-to-one correspondence with the spray heads (12), water conveying pipes which can enable water to flow into the spray heads (12) in a single direction are communicated between the elastic bags (18) and the corresponding spray heads (12), an annular pipe (13) is fixed on the outer wall of the mounting ring (10), a water inlet pipe which can enable water to flow into the elastic bags (18) in a single direction is communicated between the annular pipe (13) and each elastic bag (18), a water storage tank (15) is installed at the top of the base (1), the water storage tank (15) is communicated with the annular pipe (13) through a water pipe (14), an extrusion ring (22) is fixed on the outer wall of the gear (23), when the gear (23) rotates, the extrusion ring (22) can roll and extrude the elastic bag (18);

the gas charging assembly comprises a piston pipe (8), the piston pipe (8) is fixed on the outer wall of the powder spraying box (9) far away from the inner gear ring (11), a piston plate (24) capable of sliding in a reciprocating mode is installed on the inner wall of the piston pipe (8) through a flat key, an air inlet channel (27) capable of enabling air to be extruded into the powder spraying box (9) in a single direction is arranged between the piston pipe (8) and the powder spraying box (9), an air suction channel (28) capable of enabling air to enter the piston pipe (8) in a single direction is arranged on the outer wall of the piston plate (24), and when the baffle (20) shields the powder spraying port (17), the piston plate (24) can slide towards the direction close to the powder spraying box (9).

2. Fire extinguishing apparatus for fire fighting projects, according to claim 1, characterized in that: the inflation assembly comprises an air pump (30) arranged at the top of the lifting plate (3), and the air pump (30) is communicated with the powder spraying box (9) through an air conveying pipe (29).

3. Fire extinguishing apparatus for fire fighting projects, according to claim 1, characterized in that: the outer wall that powder spraying case (9) was kept away from in axis of rotation (6) is fixed with cylinder (5), curved groove (25) have been seted up to the outer wall of cylinder (5), the outer wall that piston board (24) are close to cylinder (5) is fixed with movable tube (7), movable tube (7) cover is established at cylinder (5) outer wall, the inner wall of movable tube (7) is fixed with slider (26), in slider (26) stretched into curved groove (25), and with the inner wall sliding connection of curved groove (25).

4. Fire extinguishing apparatus for fire fighting projects, according to claim 1, characterized in that: install telescopic link (2) between base (1) and lifter plate (3), the universal wheel that has the brake block is installed to the bottom of base (1).

5. Fire extinguishing apparatus for fire fighting projects, according to claim 1, characterized in that: a spring (21) is arranged in the elastic bag (18).

6. Fire extinguishing apparatus for fire fighting projects, according to claim 1, characterized in that: the top of the lifting plate (3) is provided with a motor (4) through a support frame (16), and one end of the rotating shaft (6) far away from the powder spraying box (9) is coaxially and fixedly connected with an output shaft of the motor (4).