CN114748823B - High-pressure water mist fire extinguishing device and fire extinguishing method - Google Patents

Abstract

The invention relates to the technical field of fire-fighting equipment, and discloses a high-pressure water mist fire extinguishing device which comprises a mixing barrel, wherein the bottom end of the mixing barrel is communicated with a shunting box, a plurality of outer barrels are fixedly arranged on the outer peripheral wall of a shunting disc, and a plurality of inner barrels are slidably arranged in the outer barrels; when a fire disaster occurs indoors, water and air are input into the mixing cylinder, the water and the air flow into the flow dividing box, the inner cylinder is pushed to move towards the direction far away from the flow dividing box under the action of water pressure, so that the inner cylinder moves out of the inner cylinder, the first atomizing head arranged in the first mounting hole moves out of the outer cylinder, the water and the air enter the outer cylinder through the flow dividing box and then flow into the inner cavity of the inner cylinder, and then high-pressure fine water mist is sprayed out through the first atomizing head, so that the fire is extinguished indoors.

Description

High-pressure water mist fire extinguishing device and fire extinguishing method

Technical Field

The invention relates to the technical field of fire-fighting equipment, in particular to a high-pressure water mist fire extinguishing device and a fire extinguishing method.

Background

A high-pressure water mist fire extinguishing system is a novel technology of a water fire extinguishing system, and is an automatic fire-fighting water supply system which extinguishes fire by water mist generated by high-pressure water through a special nozzle. The water supply pressure of the high-pressure water mist is not less than 10MPa, and the fire extinguishing mechanism mainly comprises the following components: the high-pressure water mist water drops are small in size, the heat exchange area of the high-pressure water mist water drops can be increased due to the large specific surface area, and the heat absorption efficiency and the fire extinguishing efficiency are improved. After the water mist is vaporized by heat, the volume of the water mist is rapidly expanded by 1700 times, and the water vapor is closely covered around the combustion objects to form a barrier to prevent the fresh air from entering, so that the combustion objects are interrupted due to oxygen deficiency. Has strong blocking capability to the radiant heat of the flame and prevents the flame from spreading. Poisonous and harmful flue gas is more in the electric type conflagration, and the thin water droplet can be washed away with bonding such as ashes, charcoal granule and harmful gas of burning and disappear, and the harmfulness of flue gas and toxic gas in the scene of a fire that significantly reduces, high pressure thin water smoke put out a fire as a neotype mode of putting out a fire has advantages such as environmental protection, safety, fire extinguishing efficiency height, maintenance convenience, application range are wide.

Chinese patent CN203750079U discloses a suspension type automatic water mist fire extinguishing device, which is characterized in that: consists of a water mist spraying component, a fixing component, an electric ignition head, a gas generator, a water filling port, anti-freezing water and a tank body. Wherein the fine water mist spraying component consists of a tank body nozzle component, a flow guide frame and a special nozzle. The special nozzles of the water mist fire extinguishing devices of different models are in different angles, and the installation height of the fire extinguishing device is corresponding to the angle of the nozzle. The device does not need any water pump, pipe network and other auxiliary facilities, and can effectively achieve the fire extinguishing effect by independently suspending the device above the protective space. The device can automatically sense the fire, and has the characteristics of safety, reliability, economy, environmental protection, convenient installation, high fire extinguishing efficiency and the like. After the device is automatically started, the fine water mist can be automatically and slowly sprayed, a good fire extinguishing effect is achieved, the effect of uniformly diffusing the fine water mist is achieved, and the fire extinguishing protection space of the device is greatly expanded.

However, as the nozzle of the device is exposed in the air for a long time, indoor dust is easy to enter the nozzle to cause blockage, so that the spraying effect of part of the nozzles is poor when a subsequent fire disaster occurs, and the fire extinguishing efficiency is reduced.

Therefore, it is necessary to provide a high-pressure water mist fire extinguishing apparatus and a fire extinguishing method to solve the above technical problems.

Disclosure of Invention

The invention aims to provide a high-pressure water mist fire extinguishing device and a fire extinguishing method, which aim to solve the problems in the background technology.

In order to achieve the above purpose, a structure is required to be arranged to protect the atomizing spray head, so that dust is prevented from entering the atomizing spray nozzle to cause blockage.

Based on the above thought, the invention provides the following technical scheme: the utility model provides a thin water smoke extinguishing device of high pressure, includes the mixing drum, the bottom intercommunication of mixing drum is provided with the reposition of redundant personnel box, the periphery wall fixed mounting of reposition of redundant personnel dish has a plurality of urceolus, slidable mounting has a plurality of inner tubes in the urceolus, the inner chamber of inner tube with the inner chamber of reposition of redundant personnel box is linked together, a plurality of first mounting holes have been seted up to the bottom of inner tube, and is a plurality of equal fixed mounting has a first atomising head in the first mounting hole, first atomising head with the inner chamber of inner tube is linked together.

As a further scheme of the invention, an installation seat is fixedly installed in the shunting box, a plurality of plugging columns are fixedly installed on the side wall of the installation seat, the plugging columns are respectively inserted into inner cavities of the inner cylinders, the plugging columns are in sliding fit with the inner cylinders, the outer walls of the plugging columns are attached to the inner walls of the inner cylinders, and the plugging columns are elastically connected with the inner cylinders.

As a further scheme of the invention, one end of the plugging column, which is far away from the mounting seat, is fixedly connected with an elastic rope, and one end of the elastic rope, which is far away from the mounting seat, is fixedly connected with the inner side wall of the inner cylinder, which is far away from the mounting seat.

As a further scheme of the invention, a water injection cylinder and a gas injection cylinder are fixedly mounted at the top end of the mixing cylinder, the water injection cylinder and the gas injection cylinder are both communicated with an inner cavity of the mixing cylinder, the top end of the water injection cylinder is communicated with a water injection port, and the top end of the gas injection cylinder is communicated with a gas injection port.

As a further aspect of the present invention, a first rotating shaft and a second rotating shaft are rotatably installed in the mixing cylinder, a top end of the first rotating shaft extends into the gas injection cylinder, a top end of the second rotating shaft extends into the water injection cylinder, a first impeller is fixedly installed at a top end of the first rotating shaft, the first impeller is located in the gas injection cylinder, a first gear is sleeved on the first rotating shaft, a second impeller is fixedly installed at a top end of the second rotating shaft, the second impeller is located in the water injection cylinder, a second gear is sleeved on the second rotating shaft, the first gear and the second gear are both located in the mixing cylinder, and the first gear is engaged with the second gear.

As a further scheme of the present invention, a plurality of second mounting holes are formed in the bottom of the outer cylinder, and second spray heads are fixedly mounted in the plurality of second mounting holes.

As a further scheme of the invention, the shunting box is rotationally matched with the mixing barrel, a connecting barrel is fixedly installed at the top end of the shunting box, the top end of the connecting barrel extends into the mixing barrel, the connecting barrel is rotationally connected with the mixing barrel, the mixing barrel is communicated with the shunting box through the connecting barrel, and a transmission mechanism for driving the connecting barrel to rotate is arranged in the mixing barrel.

As a further scheme of the present invention, the transmission mechanism includes a speed reducer, the speed reducer is fixedly installed in the mixing cylinder, an input end of the speed reducer is fixedly connected to a bottom end of the first rotating shaft, a third rotating shaft is rotatably installed in the mixing cylinder, a top end of the third rotating shaft is fixedly connected to an output end of the speed reducer, a third gear is sleeved on the third rotating shaft, a fourth gear is sleeved on a top end of the connecting cylinder, and the third gear is engaged with the fourth gear.

As a further scheme of the invention, one end of the inner cylinder, which is far away from the shunting box, is fixedly provided with a connecting rod, the bottom end of the connecting rod is fixedly provided with a baffle, and the top wall of the baffle is attached to the bottom wall of the outer cylinder.

The invention also discloses a high-pressure water mist fire extinguishing method, which comprises the following steps:

s1, mounting a device on a ceiling, communicating a water source and an air source with a mixing cylinder, and inputting water and air into the mixing cylinder when a fire disaster occurs indoors, wherein the water and the air flow into a shunting box;

s2, under the action of water pressure, the inner cylinder is pushed to move towards the direction far away from the flow distribution box, so that the inner cylinder is moved out of the outer cylinder, and the first spray head arranged in the first mounting hole is moved out of the outer cylinder;

and S3, water and air enter the outer barrel through the flow dividing box, flow into the inner cavity of the inner barrel, and spray high-pressure water mist through the first spray head, so that the indoor fire is extinguished.

Compared with the prior art, the invention has the beneficial effects that: when a fire disaster occurs indoors, water and air are input into the mixing cylinder, the water and the air flow into the flow dividing box, the inner cylinder is pushed to move towards the direction far away from the flow dividing box under the action of water pressure, so that the inner cylinder moves out of the inner cylinder, the first atomizing head arranged in the first mounting hole moves out of the outer cylinder, the water and the air enter the outer cylinder through the flow dividing box and then flow into the inner cavity of the inner cylinder, and then high-pressure fine water mist is sprayed out through the first atomizing head, so that the fire is extinguished indoors.

Drawings

FIG. 1 is a schematic three-dimensional structure of a first embodiment of the present invention;

FIG. 2 is a schematic three-dimensional structure of another view of the first embodiment of the present invention;

FIG. 3 is a schematic front view of the first embodiment of the present invention;

FIG. 4 is a schematic cross-sectional view illustrating a first embodiment of the present invention;

FIG. 5 is a schematic cross-sectional view of a mixing drum according to the present invention;

FIG. 6 is a schematic sectional view of the outer and inner barrels of the present invention;

FIG. 7 is a schematic cross-sectional view illustrating a second embodiment of the present invention;

FIG. 8 is an enlarged view of the structure at A of FIG. 7 according to the present invention;

FIG. 9 is a schematic cross-sectional view illustrating a third embodiment of the present invention;

FIG. 10 is an enlarged view of the portion B of FIG. 9 according to the present invention.

In the figure: 1. a mixing drum; 2. a shunt box; 3. an outer cylinder; 4. an inner barrel; 5. a water injection barrel; 6. a water injection port; 7. an air injection cylinder; 8. a gas injection port; 9. a first spray head; 10. a mounting base; 11. plugging the column; 12. an elastic cord; 13. a second spray head; 14. a first rotating shaft; 15. a first impeller; 16. a first gear; 17. a second rotating shaft; 18. a second impeller; 19. a second gear; 20. a speed reducer; 21. a third rotating shaft; 22. a third gear; 23. a connecting cylinder; 24. a fourth gear; 25. a connecting rod; 26. and a baffle plate.

Detailed Description

Example 1

Referring to fig. 1 to 6, in an embodiment of the present invention, a high-pressure water mist fire extinguishing apparatus includes a mixing cylinder 1, a diversion box 2 is provided at a bottom end of the mixing cylinder 1, the diversion box 2 is set in a disc shape, a plurality of outer cylinders 3 are fixedly installed on an outer peripheral wall of the diversion box, the plurality of outer cylinders 3 are distributed in an annular array with an axis of the diversion box as an array center, a plurality of inner cylinders 4 are slidably installed in the outer cylinders 3, an inner cavity of the inner cylinders 4 is communicated with an inner cavity of the diversion box 2, a plurality of first installation holes are formed in a bottom of the inner cylinders 4, first spray heads 9 are fixedly installed in the plurality of first installation holes, and the first spray heads 9 are communicated with the inner cavity of the inner cylinders 4; the device is installed on a ceiling, a water source and an air source are communicated with the mixing barrel 1, when a fire disaster occurs indoors, water and air are input into the mixing barrel 1, the water and the air flow into the flow distribution box 2, the inner barrel 4 is pushed to move towards the direction far away from the flow distribution box 2 under the action of water pressure, so that the inner barrel 4 moves out from the inside of the outer barrel 3, the first atomizing head 9 installed in the first installation hole moves out from the inside of the outer barrel 3, the water and the air enter the outer barrel 3 through the flow distribution box 2 and then flow into the inner cavity of the inner barrel 4, and then high-pressure fine water mist is sprayed out through the first atomizing head 9, so that the indoor fire is extinguished, when the device is not used, the first atomizing head 9 is hidden in the inner barrel 3, so that dust is prevented from entering the first atomizing head 9, the first atomizing head 9 is prevented from being blocked, and the service life is prolonged.

In this embodiment, preferably, an installation seat 10 is fixedly installed in the diversion box 2, a plurality of blocking posts 11 are fixedly installed on a side wall of the installation seat 10, the number of the blocking posts 11 is the same as that of the inner cylinders 4, the plurality of blocking posts 11 are respectively inserted into inner cavities of the plurality of inner cylinders 4, the blocking posts 11 are in sliding fit with the inner cylinders 4, outer walls of the blocking posts 11 are attached to inner walls of the inner cylinders 4, and the blocking posts 11 are elastically connected with the inner cylinders 4; when spraying, under the action of water pressure, the inner cylinder 4 is pushed to move out of the outer cylinder 3, so that the plugging column 11 is separated from the inner cylinder 4, and water can enter the inner cylinder 4.

In this embodiment, preferably, one end of the plugging column 11, which is far away from the mounting seat 10, is fixedly connected with an elastic rope 12, one end of the elastic rope 12, which is far away from the mounting seat 10, is fixedly connected with an inner side wall of the inner cylinder 4, which is far away from the mounting seat 10, after spraying is finished, the pressure effect of water pressure is lost, the inner cylinder 4 is contracted to the inside of the outer cylinder 3 under the tensile force effect of the elastic rope 12, and the plugging column 11 is inserted into the inner cylinder 4, so that the first spraying head 9 is hidden, and the resetting of the inner cylinder 4 is realized.

In this embodiment, preferably, a water injection cylinder 5 and an air injection cylinder 7 are fixedly installed at the top end of the mixing cylinder 1, the water injection cylinder 5 and the air injection cylinder 7 are both communicated with the inner cavity of the mixing cylinder 1, a water injection port 6 is communicated with the top end of the water injection cylinder 5, and an air injection port 8 is communicated with the top end of the air injection cylinder 7; the water injection port 6 is communicated with a water source, such as a water tank, a tap water pipe and the like, and the gas injection port 8 is communicated with a gas source, such as a gas pump, a gas generator and the like, so that gas and water can be injected into the mixing cylinder 1.

In this embodiment, preferably, a first rotating shaft 14 and a second rotating shaft 17 are rotatably mounted in the mixing cylinder 1, a top end of the first rotating shaft 14 extends into the gas injection cylinder 7, a top end of the second rotating shaft 17 extends into the water injection cylinder 5, a first impeller 15 is fixedly mounted at a top end of the first rotating shaft 14, the first impeller 15 is located in the gas injection cylinder 7, a first gear 16 is sleeved on the first rotating shaft 14, a second impeller 18 is fixedly mounted at a top end of the second rotating shaft 17, the second impeller 18 is located in the water injection cylinder 5, a second gear 19 is sleeved on the second rotating shaft 17, the first gear 16 and the second gear 19 are both located in the mixing cylinder 1, and the first gear 16 is engaged with the second gear 19; when injecting gas into gas injection section of thick bamboo 7 through gas injection mouth 8, the first impeller 15 of gas drive is rotatory, it is rotatory to drive first pivot 14 when first impeller 15 is rotatory, it is rotatory to drive first gear 16 when first pivot 14 is rotatory, it is rotatory to drive second gear 19 when first gear 16 is rotatory, it is rotatory to drive second pivot 17 when second gear 19 is rotatory, thereby it is rotatory to drive second impeller 18, thereby play the pressure boost effect to the water of injecting into mixing cylinder 1, perhaps when injecting water into water injection section of thick bamboo 5 through the water injection hole, it is rotatory to drive first impeller 15 through second impeller 18, make first impeller 15 drum into the air mix, make and need not install the air pump and can be to the gas of blowing into in the gas injection section of thick bamboo 7.

In this embodiment, preferably, a plurality of second mounting holes are formed in the bottom of the outer cylinder 3, a second spray head 13 is fixedly mounted in each of the plurality of second mounting holes, and when the plugging column 11 is separated from the inner cylinder 4, the second spray head 13 is communicated with the inner cavity of the flow distribution box 2, so that water in the flow distribution box 2 can be sprayed out through the second spray head 13, and the coverage area of spraying is increased.

Example 2

Referring to fig. 7 and 8, in the embodiment of the present invention, the diversion box 2 is rotationally matched with the mixing cylinder 1, a connecting cylinder 23 is fixedly installed at the top end of the diversion box 2, the top end of the connecting cylinder 23 extends into the mixing cylinder 1, the connecting cylinder 23 is rotationally connected with the mixing cylinder 1, the mixing cylinder 1 is communicated with the diversion box 2 through the connecting cylinder 23, and a transmission mechanism for driving the connecting cylinder 23 to rotate is arranged in the mixing cylinder 1; through the rotation of drive mechanism drive connecting cylinder 23 during spraying, the connecting cylinder 23 drives the branch flow box 2 when rotatory to it is rotatory to drive inner tube 4 and urceolus 3, makes high-pressure water mist be the spiral blowout, thereby improves the homogeneity of spraying, further improves the efficiency of putting out a fire.

In this embodiment, preferably, the transmission mechanism includes a speed reducer 20, the speed reducer 20 reduces the rotation speed of the output end through an internal gear set, and increases the torque of the output end, the speed reducer 20 is fixedly installed in the mixing drum 1, the input end of the speed reducer 20 is fixedly connected with the bottom end of the first rotating shaft 14, a third rotating shaft 21 is rotatably installed in the mixing drum 1, the top end of the third rotating shaft 21 is fixedly connected with the output end of the speed reducer 20, a third gear 22 is sleeved on the third rotating shaft 21, a fourth gear 24 is sleeved on the top end of the connecting drum 23, and the third gear 22 is engaged with the fourth gear 24; when the first rotating shaft 14 rotates, the first rotating shaft 14 drives the input end of the speed reducer 20 to rotate, the input end of the speed reducer 20 drives the output end thereof to rotate when rotating, so as to drive the third rotating shaft 21 to rotate, the third rotating shaft 21 drives the third gear 22 to rotate when rotating, the third gear 22 drives the fourth gear 24 to rotate when rotating, so as to drive the connecting cylinder 23 to rotate, the connecting cylinder 23 drives the shunting box 2 to rotate when rotating, and thus the shunting box 2 is driven to rotate through the first rotating shaft 14.

Example 3

Referring to fig. 9 and 10, in the embodiment of the present invention, a connecting rod 25 is fixedly installed at one end of the inner cylinder 4 away from the flow distribution box 2, a baffle 26 is fixedly installed at a bottom end of the connecting rod 25, and a top wall of the baffle 26 is attached to a bottom wall of the outer cylinder 3; when the inner cylinder 4 is moved out of the outer cylinder 3, the inner cylinder 4 drives the baffle 26 to move through the connecting rod 25, so that the baffle 26 is moved out of the bottom end of the outer cylinder 3, the second spray channel is exposed, and after the inner cylinder 4 is inserted into the outer cylinder 3, the baffle 26 gradually moves to the bottom end of the outer cylinder 3, so that the second spray head 13 is closed, and dust is prevented from entering the second spray head 13.

The invention also discloses a high-pressure water mist fire extinguishing method, which comprises the following steps:

s1, mounting the device on a ceiling, communicating a water source and an air source with a mixing cylinder 1, and when a fire disaster occurs indoors, inputting water and air into the mixing cylinder 1, wherein the water and the air flow into a flow distribution box 2;

s2, under the action of water pressure, the inner barrel 4 is pushed to move towards the direction far away from the flow distribution box 2, so that the inner barrel 4 is moved out of the outer barrel 3, and the first spray head 9 arranged in the first mounting hole is moved out of the outer barrel 3;

and S3, water and air enter the outer barrel 3 through the flow dividing box 2, flow into the inner cavity of the inner barrel 4, and then spray high-pressure water mist through the first spray head 9, so that the indoor fire is extinguished.

The working principle of the invention is as follows: when the device is not used, the first spraying head 9 is hidden in the outer barrel 3, so that dust is prevented from entering the first spraying head 9, the first spraying head 9 is prevented from being blocked, when the spraying is finished, the pressure effect of water pressure is lost, the inner barrel 4 is contracted into the outer barrel 3 under the action of the tensile force of the elastic rope 12, the sealing column 11 is inserted into the inner barrel 4, so that the first spraying head 9 is restored, and the inner barrel 4 is restored; when gas is injected into the gas injection cylinder 7 through the gas injection port 8, the gas drives the first impeller 15 to rotate, the first impeller 15 drives the first rotating shaft 14 to rotate when rotating, the first rotating shaft 14 drives the first gear 16 to rotate when rotating, the first gear 16 drives the second gear 19 to rotate when rotating, and the second gear 19 drives the second rotating shaft 17 to rotate when rotating, so that the second impeller 18 is driven to rotate, so that water injected into the mixing cylinder 1 is pressurized, or when water is injected into the water injection cylinder 5 through the water injection hole, the first impeller 15 is driven to rotate through the second impeller 18, so that the first impeller 15 blows air to mix, so that the gas can be blown into the gas injection cylinder 7 without installing a gas pump; when the plugging column 11 is separated from the inner cylinder 4, the second spraying head 13 is communicated with the inner cavity of the shunting box 2, so that water in the shunting box 2 can be sprayed out through the second spraying head 13, and the coverage area of spraying is increased; when in spraying, the connecting cylinder 23 is driven to rotate by the transmission mechanism, and when the connecting cylinder 23 rotates, the flow distribution box 2 is driven to rotate, so that the inner cylinder 4 and the outer cylinder 3 are driven to rotate, high-pressure fine water mist is spirally sprayed out, the spraying uniformity is improved, and the fire extinguishing efficiency is further improved; when the first rotating shaft 14 rotates, the first rotating shaft 14 drives the input end of the speed reducer 20 to rotate, the input end of the speed reducer 20 drives the output end of the speed reducer to rotate when rotating, so that the third rotating shaft 21 is driven to rotate, the third rotating shaft 21 drives the third gear 22 to rotate, the third gear 22 drives the fourth gear 24 to rotate when rotating, so that the connecting cylinder 23 is driven to rotate, and the connecting cylinder 23 drives the shunting box 2 to rotate when rotating, so that the shunting box 2 is driven to rotate through the first rotating shaft 14; when the inner cylinder 4 is moved out of the outer cylinder 3, the inner cylinder 4 drives the baffle 26 to move through the connecting rod 25, so that the baffle 26 is moved out of the bottom end of the outer cylinder 3, the second spray channel is exposed, and after the inner cylinder 4 is inserted into the outer cylinder 3, the baffle 26 gradually moves to the bottom end of the outer cylinder 3, so that the second spray head 13 is closed, and dust is prevented from entering the second spray head 13.

Claims (4)

1. The utility model provides a high-pressure water mist fire extinguishing device, includes a mixing section of thick bamboo, its characterized in that: the bottom end of the mixing cylinder is communicated with a flow distribution box, a plurality of outer cylinders are fixedly mounted on the peripheral wall of the flow distribution disc, a plurality of inner cylinders are slidably mounted in the outer cylinders, the inner cavity of each inner cylinder is communicated with the inner cavity of the flow distribution box, a plurality of first mounting holes are formed in the bottom of each inner cylinder, first atomizing spray heads are fixedly mounted in the first mounting holes, and the first atomizing spray heads are communicated with the inner cavity of the inner cylinder; a mounting seat is fixedly mounted in the shunting box, a plurality of plugging columns are fixedly mounted on the side wall of the mounting seat and are respectively inserted into the inner cavities of the inner cylinders, the plugging columns are in sliding fit with the inner cylinders, the outer walls of the plugging columns are attached to the inner walls of the inner cylinders, and the plugging columns are elastically connected with the inner cylinders; one end of the plugging column, which is far away from the mounting seat, is fixedly connected with an elastic rope, and one end of the elastic rope, which is far away from the mounting seat, is fixedly connected with the inner side wall of the inner cylinder, which is far away from the mounting seat; a plurality of second mounting holes are formed in the bottom of the outer barrel, and second spray heads are fixedly mounted in the second mounting holes; a connecting rod is fixedly mounted at one end of the inner barrel, which is far away from the flow distribution box, a baffle is fixedly mounted at the bottom end of the connecting rod, and the top wall of the baffle is attached to the bottom wall of the outer barrel; the top end of the mixing cylinder is fixedly provided with a water injection cylinder and a gas injection cylinder, the water injection cylinder and the gas injection cylinder are both communicated with the inner cavity of the mixing cylinder, the top end of the water injection cylinder is communicated with a water injection port, and the top end of the gas injection cylinder is communicated with a gas injection port; first pivot and second pivot are installed to the mixing drum internal rotation, the top of first pivot stretches into in the gas injection cylinder, the top of second pivot stretches into in the water injection cylinder, the top fixed mounting of first pivot has first impeller, first impeller is located in the gas injection cylinder, the cover is equipped with first gear in the first pivot, the top fixed mounting of second pivot has the second impeller, the second impeller is located in the water injection cylinder, the cover is equipped with the second gear in the second pivot, first gear and second gear all are located the mixing drum, just first gear meshes with the second gear mutually.

2. A high pressure water mist fire extinguishing apparatus according to claim 1, wherein: the flow distribution box is in running fit with the mixing barrel, a connecting barrel is fixedly mounted at the top end of the flow distribution box, the top end of the connecting barrel extends into the mixing barrel, the connecting barrel is in running connection with the mixing barrel, the mixing barrel is communicated with the flow distribution box through the connecting barrel, and a transmission mechanism used for driving the connecting barrel to rotate is arranged in the mixing barrel.

3. A high pressure water mist fire extinguishing apparatus according to claim 2, wherein: the transmission mechanism comprises a speed reducer, the speed reducer is fixedly installed in the mixing drum, the input end of the speed reducer is fixedly connected with the bottom end of the first rotating shaft, a third rotating shaft is installed in the mixing drum in a rotating mode, the top end of the third rotating shaft is fixedly connected with the output end of the speed reducer, a third gear is sleeved on the third rotating shaft, a fourth gear is sleeved on the top end of the connecting drum, and the third gear is meshed with the fourth gear.

4. A method of extinguishing a fire with a high-pressure water mist fire extinguishing apparatus according to any one of claims 1-3, characterized by the steps of:

s1, mounting a device on a ceiling, communicating a water source and an air source with a mixing cylinder, and inputting water and air into the mixing cylinder when a fire disaster occurs indoors, wherein the water and the air flow into a shunting box;

s2, under the action of water pressure, the inner cylinder is pushed to move towards the direction away from the flow distribution box, so that the inner cylinder moves out of the outer cylinder, and the first spray head arranged in the first mounting hole moves out of the outer cylinder;

and S3, water and air enter the outer barrel through the flow dividing box, flow into the inner cavity of the inner barrel, and spray high-pressure water mist through the first spray head, so that the indoor fire is extinguished.

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