Pulse steam fire extinguishing system

Abstract

The invention relates to the related technical field of fire extinguishing systems, in particular to a pulse steam fire extinguishing system which comprises an air supply pipeline, a steam pipeline, an outer pipeline, an inner pipeline and a spray head mechanism. The upper side end of the pulse dust collector main body is opened, and a sealing cover is fixedly mounted at the opening of the upper side end of the pulse dust collector main body through a positioning bolt; the outer pipeline and the inner pipeline are concentrically arranged, and the spray head mechanism is formed by combining the air supply spray head, the connecting pipe and the steam spray head, so that the interior of the pulse dust collector main body is monitored through the flame sensor, and when a dust collecting cloth bag in the pulse dust collector main body is ignited by high-temperature flue gas, the dust collecting cloth bag is ignited; and water vapor can be sprayed through the steam spray head, so that fire extinguishing can be timely carried out on the dust collecting cloth bag combusted in the pulse dust collector main body, and safety accidents are avoided.

Description

Technical Field

[0001] The present invention relates to the technical field related to fire extinguishing systems, in particular to a pulse steam fire extinguishing system. Background Art

[0002] The existing Chinese patent document with announcement number CN107627107A discloses a pea fiber secondary drying system that can automatically extinguish fire, and the scheme includes a primary drying wet fiber outlet pipe, an air heater, a positive pressure fan, a pulse dust collector and an exhaust fan, the inlet of the air heater is connected to the atmosphere, the outlet of the air heater is connected to the hot air pipe, the primary drying wet fiber outlet pipe is also connected to the hot air pipe, the outlet of the hot air pipe is connected to the positive pressure fan, the outlet of the positive pressure fan is connected to the inlet of the pulse dust collector through the fiber heating air pipe, the top air outlet of the pulse dust collector is connected to the inlet of the exhaust fan, the outlet of the exhaust fan is connected to the atmosphere, the bottom cone bucket outlet of the pulse dust collector is connected to a screw conveyor, the discharge port of the screw conveyor is connected to the fiber discharge pipe through an air shutoff device, the top of the pulse dust collector is distributed with fire extinguishing nozzles, each fire extinguishing nozzle is connected to a fire fighting pipe, and an automatic switch valve is installed on the fire fighting pipe; However, the nozzle structure used for fire extinguishing in the scheme is relatively simple, which makes it impossible to effectively extinguish fire at various positions in the inner cavity of the dust collector; In addition, the interior of the dust collector is a high-dust environment, so the atomizing nozzle holes of the nozzle are easily clogged under the high dust ring, which causes the nozzle structure to require more frequent maintenance, thereby increasing the maintenance cost of the equipment. For this reason, the present invention proposes a pulse steam fire extinguishing system to solve the above problem. Summary of the invention

[0003] The object of the present invention is to provide a pulse steam fire extinguishing system to solve the problems raised in the above background technology.

[0004] To achieve the above object, the present invention provides the following technical solution: a pulse steam fire extinguishing system, comprising: An air supply duct, wherein the air supply duct is fixed on the upper end side wall of the pulse dust collector body, and the air supply duct is connected to the compressed air supply system, the upper side end of the pulse dust collector body is open, and a sealing cover is fixedly installed at the upper side end opening of the pulse dust collector body by positioning bolts, the bottom of the pulse dust collector body is positioned on the ground by a leg structure, and a flame sensor is arranged in the inner cavity of the pulse dust collector body; A steam pipeline, wherein the steam pipeline is arranged opposite to the air supply pipeline, and the outer diameter of the steam pipeline is smaller than the inner diameter of the air supply pipeline, the steam pipeline is connected to the steam supply device through the air supply pipeline, and the air supply pipeline is provided with an electromagnetic valve, and the electromagnetic valve, the flame sensor, and the compressed air supply system are all electrically connected to the PLC control module on the pulse dust collector body; An outer pipe, wherein the outer pipe is arranged in a ring shape and connected to the air supply pipe; An inner pipe, wherein the inner pipe is arranged in a ring shape and is fixedly connected to the steam pipe; A nozzle mechanism is used to spray gas in the air supply duct and steam in the steam duct. The nozzle mechanism is arranged corresponding to the dust bag inside the pulse dust collector body, and the nozzle mechanism extends from the bag opening of the dust bag into the inner cavity of the dust bag.

[0005] Preferably, the outer pipe and the inner pipe are arranged concentrically, and the inner pipe is arranged in the inner cavity of the outer pipe, the air supply pipe, the steam pipe, the outer pipe and the inner pipe are formed as one piece, the inner cavity of the outer pipe is connected to the inner cavity of the air supply pipe, and the inner cavity of the outer pipe is not connected to the steam pipe, the inner cavity of the inner pipe is connected to the inner cavity of the steam pipe, and the inner cavity of the inner pipe is not connected to the inner cavity of the air supply pipe, and the air supply pipe and the steam pipe are not connected.

[0006] Preferably, the nozzle mechanism includes an air supply nozzle, a connecting pipe and a steam nozzle, the air supply nozzle is an inverted funnel structure, and the air supply nozzle is integrally formed with the side wall of the outer pipe, a primary connecting hole is provided on the side wall of the outer pipe, the inner cavity of the air supply nozzle is connected with the inner cavity of the outer pipe through the primary connecting hole, a secondary connecting hole is provided on the side wall of the inner pipe, the connecting pipe is connected with the inner cavity of the inner pipe through the secondary connecting hole, and the lower end of the connecting pipe is arranged through the side wall of the outer pipe, the connecting pipe, the outer pipe and the inner pipe are integrally formed, the steam nozzle is connected to the lower end of the connecting pipe, and the steam nozzle is arranged at the port position of the air supply nozzle.

[0007] Preferably, the steam nozzle is composed of a connecting seat, an air distribution pipe and an atomizing nozzle combination, the connecting seat, the air distribution pipe and the atomizing nozzle are integrally formed, the connecting seat is threadedly connected to the lower end of the connecting pipe, six air distribution pipes are arranged around the circumference of the connecting seat, and the outer end of the air distribution pipe is sealed, the air distribution pipe is connected to the inner cavity of the connecting seat through air holes, and a row of atomizing nozzles are arranged on the lower side of a single air distribution pipe.

[0008] Preferably, a fan blade seat is rotatably mounted on the outer wall of the connecting tube via a sealed bearing, and fan blades are evenly arranged on the outer wall of the fan blade seat. The fan blades are arranged in the inner cavity of the air supply nozzle, and a torsion spring is sleeved on the connecting tube, and the lower end of the torsion spring is fixedly connected to the fan blade seat, and the upper end of the torsion spring is fixedly connected to the upper end side wall of the connecting tube.

[0009] Preferably, a mounting bracket is integrally formed on the lower side of the fan blade seat, a group of the mounting brackets are symmetrically arranged, and the lower side ends of the mounting brackets are fixedly connected to dust removal mechanisms.

[0010] Preferably, the dust removal mechanism is composed of a brush holder, cleaning bristles, a screw and a positioning nut. The cleaning bristles are evenly arranged on the upper end surface of the bristle holder, and the screw is integrally formed with the bristle holder. The mounting bracket is in a Z-shaped structure inclined at ninety degrees, and a docking groove is provided at the lower side end of the mounting bracket. A screw groove is fixedly installed at the bottom of the docking groove. When the bristle holder is actually installed, the bristle holder is inserted into the docking groove, the screw is arranged through the screw groove, and the positioning nut is screwed on the screw to position the bristle holder on the mounting bracket.

[0011] Preferably, the cleaning bristles are flexible bristles, and when the bristle holder is actually installed, the upper end surface of the cleaning bristles is arranged to be in contact with the lower end surface of the atomizing nozzle.

[0012] Preferably, the docking groove is a square hole, and the cross-sectional dimensions of the bristle seat are matched with the cross-sectional dimensions of the docking groove.

[0013] Preferably, when the torsion spring is in a reset state, the bristle holder and all air distribution ducts are staggered, and when the air supply nozzle is switched from no air supply to air supply, the number of rotations of the fan blade holder is greater than one, and when air is supplied in the air supply nozzle, the bristle holder and all air distribution ducts are staggered.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. A pulse steam fire extinguishing system consisting of an air supply duct, a steam duct, an outer duct, an inner duct and a nozzle mechanism is set up, and the outer duct and the inner duct are arranged concentrically, and the nozzle mechanism is set to consist of an air supply nozzle, a connecting pipe and a steam nozzle, so that the inside of the pulse dust collector body is monitored by a flame sensor, so that when the high-temperature flue gas ignites the dust bag inside the pulse dust collector body, water vapor can be sprayed through the steam nozzle, so as to timely extinguish the burning dust bag inside the pulse dust collector body, thereby avoiding safety accidents; 2. The air supply nozzle is arranged into an inverted funnel structure, and the steam nozzle is arranged at the port position of the air supply nozzle, so that the water vapor sprayed by the steam nozzle is assisted to diffuse through the air supply nozzle, thereby improving the uniform distribution effect of the steam, thereby achieving the purpose of rapid fire extinguishing. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a front view of the present invention; Figure 3 This is a schematic diagram of the distribution of the nozzle mechanism of the present invention; Figure 4 for Figure 3 A schematic diagram of the structure enlargement in the middle; Figure 5 This is a schematic diagram of the distribution of steam pipes and air supply pipes of the present invention; Figure 6 for Figure 5 A magnified schematic diagram of the structure at B in the middle; Figure 7 This is a schematic diagram of the external pipeline distribution of the present invention; Figure 8 for Figure 7 A magnified schematic diagram of the structure at C in the middle; Fig. 9 A half-section view of the outer pipe of the present invention; Fig.10 for Fig. 9 A magnified schematic diagram of the structure at D in the middle; Fig.11 for Fig.10 The enlarged schematic diagram of the structure at E in the middle; Fig.12 for Fig.11 A magnified schematic diagram of the structure at F in the middle; Fig.13 for Fig.12 A magnified schematic diagram of the structure at G in the middle; Fig.14 for Fig.12 A magnified schematic diagram of the structure at H in the middle; Fig.15 It is a schematic diagram of the structure of the fan blade of the present invention.

[0016] In the figure: pulse dust collector body 1, sealing cover 2, air supply duct 3, steam duct 4, outer duct 5, inner duct 6, nozzle mechanism 7, air supply nozzle 8, connecting pipe 9, steam nozzle 10, primary connecting hole 11, connecting seat 12, air distribution duct 13, atomizing nozzle 14, air hole 15, sealing bearing 16, fan blade seat 17, fan blade 18, torsion spring 19, mounting bracket 20, dust removal mechanism 21, docking groove 22, screw groove 23, brush seat 24, cleaning bristles 25, screw 26, positioning nut 27, secondary connecting hole 28, positioning bolt 29, leg structure 30. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] See also Figure 1-15 , the present invention provides the following four preferred embodiments: Embodiment 1: A pulse steam fire extinguishing system, comprising an air supply duct 3, a steam duct 4, an outer duct 5, an inner duct 6 and a nozzle mechanism 7, wherein the air supply duct 3 is fixed to the upper end side wall of the pulse dust collector body 1, and the air supply duct 3 is connected to the compressed air supply system, the upper side end of the pulse dust collector body 1 is open, and a sealing cover 2 is fixedly installed at the upper side end opening of the pulse dust collector body 1 by a positioning bolt 29, the bottom of the pulse dust collector body 1 is positioned on the ground by a leg structure 30, and a flame sensor is arranged in the inner cavity of the pulse dust collector body 1, the steam duct 4 is arranged opposite to the air supply duct 3, and the outer diameter of the steam duct 4 is smaller than the inner diameter of the air supply duct 3. The steam pipe 4 is connected to the steam supply device through the air supply pipe, and an electromagnetic valve is arranged on the air supply pipe. The electromagnetic valve, the flame sensor and the compressed air supply system are all electrically connected to the PLC control module on the pulse dust collector body 1. The outer pipe 5 is arranged in a ring shape, and the outer pipe 5 is connected to the air supply pipe 3. The inner pipe 6 is arranged in a ring shape, and the inner pipe 6 is fixedly connected to the steam pipe 4. The nozzle mechanism 7 is used to spray the gas in the air supply pipe 3 and the steam in the steam pipe 4. The nozzle mechanism 7 is arranged corresponding to the dust bag inside the pulse dust collector body 1, and the nozzle mechanism 7 extends from the bag opening of the dust bag into the inner cavity of the dust bag.

[0019] The outer pipe 5 and the inner pipe 6 are arranged concentrically, and the inner pipe 6 is arranged in the inner cavity of the outer pipe 5. The air supply pipe 3, the steam pipe 4, the outer pipe 5, and the inner pipe 6 are integrally formed. The inner cavity of the outer pipe 5 is connected to the inner cavity of the air supply pipe 3, and the inner cavity of the outer pipe 5 is not connected to the steam pipe 4. The inner cavity of the inner pipe 6 is connected to the inner cavity of the steam pipe 4, and the inner cavity of the inner pipe 6 is not connected to the inner cavity of the air supply pipe 3. The air supply pipe 3 and the steam pipe 4 are not connected. A pulse steam fire extinguishing system is composed of an outer pipe 5, an inner pipe 6 and a nozzle mechanism 7, and the outer pipe 5 and the inner pipe 6 are arranged concentrically, and the nozzle mechanism 7 is arranged to be composed of an air supply nozzle 8, a connecting pipe 9 and a steam nozzle 10, so that the inside of the pulse dust collector body 1 is monitored by a flame sensor, so that when the high-temperature flue gas ignites the dust bags inside the pulse dust collector body 1, water vapor can be sprayed through the steam nozzle 10, so that the burning dust bags inside the pulse dust collector body 1 can be extinguished in time, thereby avoiding safety accidents.

[0020] Example 2: Please refer to Figure 3-10 On the basis of the first embodiment, the nozzle mechanism 7 includes an air supply nozzle 8, a connecting pipe 9 and a steam nozzle 10. The air supply nozzle 8 is an inverted funnel structure, and the air supply nozzle 8 is integrally formed with the side wall of the outer pipe 5. A primary connecting hole 11 is provided on the side wall of the outer pipe 5, and the inner cavity of the air supply nozzle 8 is connected to the inner cavity of the outer pipe 5 through the primary connecting hole 11. A secondary connecting hole 28 is provided on the side wall of the inner pipe 6, and the connecting pipe 9 is connected to the inner cavity of the inner pipe 6 through the secondary connecting hole 28, and the lower side of the connecting pipe 9 The end is arranged through the side wall of the outer pipe 5, the connecting pipe 9, the outer pipe 5, and the inner pipe 6 are integrally formed, the steam nozzle 10 is connected to the lower side end of the connecting pipe 9, and the steam nozzle 10 is arranged at the port position of the air supply nozzle 8, the air supply nozzle 8 is arranged to be an inverted funnel structure, and the steam nozzle 10 is arranged at the port position of the air supply nozzle 8, so that the water vapor sprayed by the steam nozzle 10 is assisted to diffuse through the air supply nozzle 8, thereby improving the uniform distribution effect of the steam, thereby achieving the purpose of rapid fire extinguishing.

[0021] Example 3: Please refer to Figure 5-12 On the basis of the second embodiment, the steam nozzle 10 is composed of a connecting seat 12, an air distribution pipe 13 and an atomizing nozzle 14. The connecting seat 12, the air distribution pipe 13 and the atomizing nozzle 14 are integrally formed. The connecting seat 12 is threadedly connected to the lower end of the connecting pipe 9. Six air distribution pipes 13 are arranged around the circumference of the connecting seat 12, and the outer end of the air distribution pipe 13 is sealed. The air distribution pipe 13 is connected to the inner cavity of the connecting seat 12 through the air hole 15. A row of atomizing nozzles 14 are arranged on the lower side of a single air distribution pipe 13.

[0022] A fan blade seat 17 is rotatably mounted on the outer wall of the connecting pipe 9 through a sealed bearing 16, and fan blades 18 are evenly arranged on the outer wall of the fan blade seat 17. The fan blades 18 are arranged in the inner cavity of the air supply nozzle 8. A torsion spring 19 is sleeved on the connecting pipe 9, and the lower side end of the torsion spring 19 is fixedly connected to the fan blade seat 17, and the upper side end of the torsion spring 19 is fixedly connected to the upper side end side wall of the connecting pipe 9. The airflow in the air supply nozzle 8 drives the fan blades 18 to rotate, thereby automatically driving the dust removal mechanism 21 to operate, so that the dust removal mechanism 21 automatically completes the dust removal work. The process does not require other power sources, thereby effectively optimizing the driving structure of the device, making it convenient for daily maintenance of the equipment.

[0023] Example 4: Please refer to Figure 9-15 On the basis of the third embodiment, a mounting bracket 20 is integrally formed on the lower side of the fan blade seat 17, and a group of mounting brackets 20 are symmetrically arranged, and the lower side ends of the mounting brackets 20 are fixedly connected with dust removal mechanisms 21. Through the setting of the dust removal mechanism 21, the port of the atomizing nozzle 14 can be effectively cleaned to avoid blockage of the port of the atomizing nozzle 14.

[0024] The dust removal mechanism 21 is composed of a brush seat 24, cleaning bristles 25, a screw 26 and a positioning nut 27. The cleaning bristles 25 are evenly arranged on the upper end surface of the brush seat 24, and the screw 26 is integrally formed with the brush seat 24. The mounting bracket 20 is a Z-shaped structure inclined at ninety degrees, and a docking groove 22 is provided at the lower side end of the mounting bracket 20. The bottom of the docking groove 22 is fixedly installed with a screw groove 23. When the brush seat 24 is actually installed, the brush seat 24 is inserted into the docking groove 22, and the screw 26 is arranged through the screw groove 23. The positioning nut 27 is screwed on the screw 26 to position the brush seat 24 on the mounting bracket 20. The cleaning bristles 25 are flexible bristles, and when the brush seat 24 is actually installed, the upper end surface of the cleaning bristles 25 is arranged in contact with the lower end surface of the atomizing nozzle 14, the docking groove 22 is a square hole, and the cross-sectional size of the brush seat 24 is matched with the cross-sectional size of the docking groove 22.

[0025] When the torsion spring 19 is in the reset state, the brush holder 24 and all the air distribution ducts 13 are offset. When the air supply nozzle 8 switches from no air supply to air supply, the number of rotations of the fan blade holder 17 is greater than one, and when air is supplied in the air supply nozzle 8, the brush holder 24 and all the air distribution ducts 13 are offset, so that the torsion spring 19 will limit the fan blades 18, thereby preventing the brush holder 24 from interfering with the atomizing nozzle 14, thereby affecting the water vapor spraying effect.

[0026] Although the above describes the illustrative specific implementation methods of the present application so that technicians in this technical field can understand the present application, the present application is not limited to the scope of the specific implementation methods. For ordinary technicians in this technical field, as long as various changes are within the spirit and scope of the present application defined and determined by the attached claims, all application creations using the concept of the present application are protected.

Claims

1. Pulse steam fire extinguishing system, characterized by: include: An air supply duct (3), the air supply duct (3) being fixed to the upper side wall of the pulse dust collector body (1), and the air supply duct (3) being connected to a compressed air supply system, the upper side end of the pulse dust collector body (1) being arranged to be open, and a sealing cover (2) being fixedly mounted at the upper side end opening of the pulse dust collector body (1) via positioning bolts (29), the bottom of the pulse dust collector body (1) being positioned on the ground via a leg structure (30), and a flame sensor being arranged in the inner cavity of the pulse dust collector body (1); A steam pipe (4), wherein the steam pipe (4) is arranged opposite to the air supply pipe (3), and the outer diameter of the steam pipe (4) is smaller than the inner diameter of the air supply pipe (3); the steam pipe (4) is connected to the steam supply device via the air supply pipe, and the air supply pipe is provided with an electromagnetic valve, and the electromagnetic valve, the flame sensor, and the compressed air supply system are all electrically connected to a PLC control module on the pulse dust collector body (1); An outer pipe (5), the outer pipe (5) being arranged in a ring shape, and the outer pipe (5) being connected to the air supply pipe (3); An inner pipe (6), the inner pipe (6) being arranged in a ring shape, and the inner pipe (6) being fixedly connected to the steam pipe (4); A nozzle mechanism (7), the nozzle mechanism (7) being used to spray gas in the air supply duct (3) and steam in the steam duct (4), the nozzle mechanism (7) being arranged corresponding to a dust bag inside the pulse dust collector body (1), and the nozzle mechanism (7) extending from the bag opening of the dust bag into the inner cavity of the dust bag.

2. The pulse steam fire extinguishing system according to claim 1, characterized in that: The outer pipe (5) and the inner pipe (6) are arranged concentrically, and the inner pipe (6) is arranged in the inner cavity of the outer pipe (5); the air supply pipe (3), the steam pipe (4), the outer pipe (5), and the inner pipe (6) are integrally formed; the inner cavity of the outer pipe (5) is connected to the inner cavity of the air supply pipe (3), and the inner cavity of the outer pipe (5) is not connected to the steam pipe (4); the inner cavity of the inner pipe (6) is connected to the inner cavity of the steam pipe (4), and the inner cavity of the inner pipe (6) is not connected to the inner cavity of the air supply pipe (3); and the air supply pipe (3) and the steam pipe (4) are not connected.

3. The pulse steam fire extinguishing system according to claim 2, characterized in that: The nozzle mechanism (7) comprises an air supply nozzle (8), a connecting pipe (9) and a steam nozzle (10); the air supply nozzle (8) is in an inverted funnel structure, and the air supply nozzle (8) is integrally formed with the side wall of the outer pipe (5); a primary connecting hole (11) is provided on the side wall of the outer pipe (5); the inner cavity of the air supply nozzle (8) is connected to the inner cavity of the outer pipe (5) through the primary connecting hole (11); and a steam nozzle (10) is provided on the side wall of the inner pipe (6). A secondary connecting hole (28) is provided, the connecting pipe (9) is connected to the inner cavity of the inner pipe (6) through the secondary connecting hole (28), and the lower end of the connecting pipe (9) is arranged to pass through the side wall of the outer pipe (5), the connecting pipe (9), the outer pipe (5), and the inner pipe (6) are integrally formed, the steam nozzle (10) is connected to the lower end of the connecting pipe (9), and the steam nozzle (10) is arranged at the port position of the air supply nozzle (8).

4. The pulse steam fire extinguishing system according to claim 3, characterized in that: The steam nozzle (10) is composed of a connection seat (12), an air distribution pipe (13) and an atomizing nozzle (14). The connection seat (12), the air distribution pipe (13) and the atomizing nozzle (14) are integrally formed. The connection seat (12) is threadedly connected to the lower side end of the connection pipe (9). Six air distribution pipes (13) are arranged around the circumference of the connection seat (12), and the outer ends of the air distribution pipes (13) are sealed. The air distribution pipes (13) are connected to the inner cavity of the connection seat (12) through air holes (15). A row of atomizing nozzles (14) are arranged on the lower side of each air distribution pipe (13).

5. The pulse steam fire extinguishing system according to claim 4, characterized in that: A fan blade seat (17) is rotatably mounted on the outer wall of the connecting tube (9) via a sealing bearing (16); fan blades (18) are evenly arranged on the outer wall of the fan blade seat (17); the fan blades (18) are arranged in the inner cavity of the air supply nozzle (8); a torsion spring (19) is sleeved on the connecting tube (9); the lower side end of the torsion spring (19) is fixedly connected to the fan blade seat (17); and the upper side end of the torsion spring (19) is fixedly connected to the upper side end side wall of the connecting tube (9).

6. The pulse steam fire extinguishing system according to claim 5, characterized in that: A mounting bracket (20) is integrally formed on the lower side of the fan blade seat (17), a group of the mounting brackets (20) are symmetrically arranged, and the lower side ends of the mounting brackets (20) are fixedly connected to a dust removal mechanism (21).

7. The pulse steam fire extinguishing system according to claim 6, characterized in that: The dust removal mechanism (21) is composed of a brush holder (24), cleaning bristles (25), a screw (26) and a positioning nut (27); the cleaning bristles (25) are evenly arranged on the upper end surface of the brush holder (24); the screw (26) and the brush holder (24) are integrally formed; the mounting bracket (20) is in a Z-shaped structure arranged at an angle of 90 degrees; a docking groove (22) is provided at the lower side end of the mounting bracket (20); a screw groove (23) is fixedly installed at the bottom of the docking groove (22); when the brush holder (24) is actually installed, the brush holder (24) is inserted into the docking groove (22); the screw (26) is arranged through the screw groove (23); and the positioning nut (27) is screwed on the screw (26) to position the brush holder (24) on the mounting bracket (20).

8. The pulse steam fire extinguishing system according to claim 7, characterized in that: The cleaning bristles (25) are flexible bristles, and when the bristle holder (24) is actually installed, the upper end surface of the cleaning bristles (25) is arranged to abut against the lower end surface of the atomizing nozzle (14).

9. The pulse steam fire extinguishing system according to claim 8, characterized in that: The docking groove (22) is a square hole, and the cross-sectional dimensions of the bristle seat (24) are arranged to match the cross-sectional dimensions of the docking groove (22).

10. The pulse steam fire extinguishing system according to claim 9, characterized in that: When the torsion spring (19) is in a reset state, the bristle holder (24) and all the air distribution ducts (13) are arranged in a staggered manner, and when the air supply nozzle (8) switches from no air supply to air supply, the number of rotations of the fan blade holder (17) is greater than one.

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