Self-tracking positioning jet fire extinguishing device

Abstract

The utility model relates to fire fighting technical field discloses automatic tracking and positioning jet flow fire extinguishing device, including the flange seat, main conveying pipe, elbow and spray pipe that install in turn from top to bottom intercommunication, and the upper end between elbow and main conveying pipe, the lower end between elbow and spray pipe all rotate assembly, main conveying pipe installs first drive structure for rotating elbow in horizontal plane, and first drive structure is provided with rotary stopper, and elbow installs second drive structure for swinging spray pipe in vertical plane, main conveying pipe, elbow and spray pipe cover are equipped with shell, the output end fixed mounting of spray pipe has camera and infrared sensor, and the downside fixed mounting of shell has ultraviolet sensor, the utility model discloses main conveying pipe, elbow, spray pipe etc. adopt the design of integrated molding in many places, and the quantity of parts is simplified, and the integrated multi -use reaches the purpose that the assembly quantity is small, reduces assembly difficulty, and the volume can reduce, in addition, can also realize the optimization of two -freedom degree regulation and control, reduces manufacturing cost.

Description

Technical Field

[0001] This utility model relates to the field of fire protection technology, specifically to an automatic tracking and positioning jet fire extinguishing device. Background Technology

[0002] The automatic tracking and positioning jet extinguishing device is an intelligent fire-fighting equipment that achieves precise fire extinguishing through dual degrees of freedom adjustment. It is mainly used for fire prevention and control in high-ceilinged spaces.

[0003] Existing automatic tracking and positioning jet fire extinguishing devices mainly include a rotatable gun body (multi-section connected delivery pipes, protective shell, etc.), an elevation / horizontal rotation mechanism (servo motor and gear transmission structure, etc.), and detection components (ultraviolet sensors, infrared sensors, cameras, etc.). Due to the need to balance rotation adjustment, sealing performance, and operational stability, each part has a large number of components, resulting in problems such as large assembly volume, high assembly difficulty, large size, and high cost.

[0004] Therefore, there is an urgent need for an automatic tracking and positioning jet fire extinguishing device with a simplified structure and convenient assembly. Utility Model Content

[0005] The purpose of this invention is to provide an automatic tracking and positioning jet fire extinguishing device with simplified components, convenient assembly, small size, and low cost, which can solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: An automatic tracking and positioning jet fire extinguishing device includes a flange seat, a main delivery pipe, a bend, and a nozzle, which are sequentially connected from top to bottom. The upper end of the bend is rotatably assembled with the main delivery pipe, and the lower end of the bend is rotatably assembled with the nozzle. The main delivery pipe is equipped with a first drive structure for rotating the bend in a horizontal plane, and the first drive structure is provided with a rotation limiter. The bend is equipped with a second drive structure for swinging the nozzle in a vertical plane. The main delivery pipe, bend, and nozzle are covered by an outer shell. A camera and an infrared sensor are fixedly installed at the output end of the nozzle, and an ultraviolet sensor is fixedly installed on the lower side of the outer shell. A circuit board is fixedly installed on the lower side of the first drive structure via a support plate, and the support plate covers one side of the second drive structure. A switching power supply is fixedly installed on the side wall of the bend via a support platform.

[0007] Specifically, the bend includes an integrally formed stepped seat, a bypass pipe, and a bearing seat. The bearing seats are a pair and located on the same side of the bypass pipe. The stepped seat is connected to the upper side of the bypass pipe. A through groove is opened on the side of the bypass pipe away from the bearing seat, and a cover is installed on the through groove.

[0008] Specifically, the lower circumferential side of the main conveying pipe is integrally formed with a round shoulder, and both ends of the round shoulder are provided with a mounting groove, and a bearing is installed between the mounting groove and the step seat.

[0009] Specifically, the first drive structure includes a driven gear, a protective box, a first drive gear, and a first stepper motor. The protective box is fixedly installed on the upper side of the stepped seat, and the first stepper motor is fixedly installed on the lower side of the protective box. The output end of the first stepper motor extends into the protective box and is fixedly installed with the first drive gear. The driven gear is fixedly installed on the main conveying pipe and is located inside the protective box. The first drive gear meshes with the driven gear.

[0010] Specifically, the rotation limiting component includes a stop block, a limit switch, a rocker arm, and a lever. The limit switch is fixedly installed on the lower side of the protective box, the rocker arm is rotatably installed on the lower side of the protective box, an arc-shaped groove is opened at the bottom of the protective box, a lever is fixedly installed at one end of the rocker arm, the lever extends into the protective box through the arc-shaped groove, and a stop block for moving the lever is fixedly installed on the lower side of the driven gear.

[0011] Specifically, the nozzle includes an arc-shaped channel, a rotating shaft, a pipe seat, and a guide pipe. The pipe seat is integrally formed on the side wall of the rotating shaft, and the guide pipe is installed in connection with the pipe seat. The rotating shaft is rotatably installed between bearing seats through bearings, and an arc-shaped channel connecting the bypass pipe and the pipe seat is opened inside the rotating shaft.

[0012] Specifically, a grid rectifier is inserted inside the guide tube.

[0013] Specifically, the second drive structure includes a sector gear, a second drive gear, and a second stepper motor. The bearing housing away from the bypass pipe is fixedly mounted with the second stepper motor via a support frame. The output end of the second stepper motor is fixedly mounted with the second drive gear. The end of the rotating shaft away from the bypass pipe is fixedly mounted with the sector gear. The second drive gear meshes with the sector gear.

[0014] Specifically, the outer shell includes an upper cover and a lower cover. The main delivery pipe is equipped with the upper cover, and the protective box is equipped with the lower cover. The ends of the upper cover and the lower cover that are close to each other are radially offset. The lower cover has a through groove for avoiding the nozzle.

[0015] Compared with the prior art, the beneficial effects of this utility model are: The main delivery pipe, bends, nozzles and other parts adopt an integrated molding design, which reduces the number of parts and makes them multifunctional, thereby reducing the amount of assembly required, reducing the difficulty of assembly, and reducing the size. In addition, the stepper motor driving method used in the first and second drive structures is lower in cost, and when combined with the rotary limit component, it can achieve optimization of dual-degree-of-freedom control, resulting in more precise positioning control and smoother operation. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of the structure of this utility model; Figure 2 This is a three-dimensional schematic diagram of the structure of this utility model with the lower cover removed; Figure 3 This is a partial sectional view of the structure of this utility model without the outer casing, circuit board, and switching power supply. Figure 4 This is a schematic cross-sectional view of the structure at the bend of the pipe in this utility model; Figure 5 This is a partial sectional view of the structure of the rotary limiting component of this utility model; Figure 6 This is a schematic cross-sectional view of the nozzle of this utility model.

[0017] In the diagram: 1 Flange seat, 2 Main delivery pipe, 3 First drive structure, 31 Driven gear, 32 Protective box, 33 First drive gear, 34 First stepper motor, 4 Rotation limit component, 41 Stop block, 42 ​​Limit switch, 43 Rocker arm, 44 Toggle arm, 5 Bend, 51 Stepped seat, 52 Bypass pipe, 53 Bearing seat, 54 Cover, 6 Second drive structure, 61 Sector gear, 62 Second drive gear, 63 Second stepper motor, 7 Infrared sensor, 8 Nozzle, 81 Arc channel, 82 Rotary shaft, 83 Pipe seat, 84 Guide pipe, 9 Outer shell, 91 Upper cover, 92 Lower cover, 10 Camera, 11 Round shoulder, 12 Grid rectifier frame, 13 Ultraviolet sensor, 14 Circuit board, 15 Switching power supply. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Example content: Please see Figure 1 , Figure 2An automatic tracking and positioning jet fire extinguishing device is provided, comprising a flange seat 1, a main delivery pipe 2, a bend 5, and a nozzle 8 installed sequentially from top to bottom. The upper end of the bend 5 is rotatably assembled with the main delivery pipe 2, and the lower end of the bend 5 is rotatably assembled with the nozzle 8. The flange seat 1 has a through hole in the center for inserting the main delivery pipe 2. The flange seat 1 and the main delivery pipe 2 are installed by connecting screws and screw holes, which facilitates assembly and disassembly. The flange seat 1 can be connected to the fire protection pipe on the building roof by bolts passing through the flange hole, forming a stable installation base.

[0020] The main delivery pipe 2 is equipped with a first drive structure 3 for rotating the bend 5 in the horizontal plane. The first drive structure 3 is provided with a rotation limiter 4. The bend 5 is equipped with a second drive structure 6 for swinging the nozzle 8 in the vertical plane. The flange seat 1, the main delivery pipe 2, the bend 5 and the nozzle 8 can form a complete delivery channel, so that the bend 5 can rotate in the horizontal plane and the nozzle 8 can swing in the vertical plane, forming a dual-degree-of-freedom adjustment structure to ensure full coverage of the fire extinguishing angle. The rotation limiter 4 is used to limit the rotation angle range.

[0021] The main delivery pipe 2, the bend pipe 5 and the nozzle 8 are covered by an outer shell 9. The outer shell 9 is used to protect the internal structure and does not affect the rotation and swinging motion.

[0022] Detecting the structure of a flame: A camera 10 and an infrared sensor 7 are fixedly installed at the output end of the nozzle 8. The camera 10 is used for monitoring and recording. An ultraviolet sensor 13 is fixedly installed on the lower side of the housing 9. The ultraviolet sensor 13 detects the ultraviolet light (wavelength 185-260nm) released when the flame is burning. In natural light, ultraviolet light in this band is absorbed by the ozone layer. Therefore, the ultraviolet sensor 13 can effectively eliminate ambient light interference and focus on detecting the ultraviolet radiation unique to the flame, making it suitable for "discovering" flames.

[0023] The infrared sensor 7 locates the source by detecting the infrared radiation (wavelength 4.1-4.7μm) released when the flame is burning. It uses multi-band composite detection technology to distinguish the infrared radiation of the flame from the infrared radiation of interference sources such as the sun and incandescent lamps, thereby reducing the false alarm rate and "tracking" the heat source.

[0024] The main setup methods for camera 10 and infrared sensor 7 are as follows: Option 1: The camera 10 is located below the output end of the nozzle 8, and the infrared sensor 7 is located above the output end of the nozzle 8. Option 2: The infrared sensor 7 is located above the output end of the nozzle 8, and the camera 10 is fixedly installed on one side (left or right) of the infrared sensor 7. The positions of the camera 10 and the infrared sensor 7 should not affect data acquisition.

[0025] Structure of core functional modules: A circuit board 14 is fixedly mounted on the lower side of the first drive structure 3 via a support plate, and the support plate covers one side of the second drive structure 6. A switching power supply 15 is fixedly mounted on the side wall of the bend 5 via a support platform. The circuit board 14 integrates a main controller, signal conditioning circuit, stepper motor drive module, etc., to coordinate the entire process of detection, positioning, and fire extinguishing; while the switching power supply 15 adopts a fire-fighting dedicated power supply line to convert 220V AC power into 24V DC power, thereby providing stable power to the electrical components.

[0026] The support plate is formed by fixing a plate body and an arc-shaped cover. The circuit board 14 is located on the left side of the plate body and the arc-shaped cover is located on the right side of the plate body. The arc-shaped cover is used to shield the second drive structure 6 to prevent foreign objects and dust from affecting the normal operation of the second drive structure 6; it simplifies the installation structure of the circuit board 14 and the switching power supply 15.

[0027] Through the coordinated operation of the above structures, usage requirements can be met while simplifying each part.

[0028] Please see Figure 4 The structure of bend 5: The bend 5 includes an integrally molded step seat 51, bypass pipe 52, and bearing seat 53. The integrally molded step seat 51, bypass pipe 52, and bearing seat 53 can reduce the number of parts, as well as the overall weight and volume.

[0029] The bearing housings 53 are a pair and located on the same side of the bypass pipe 52. The pair of bearing housings 53 are used to provide a mounting base for the oscillating nozzle 8. The step seat 51 is connected to the upper side of the bypass pipe 52 and is used to rotatably connect with the main delivery pipe 2. The bypass pipe 52 has a smooth flow channel for connecting the main delivery pipe 2 and the nozzle 8.

[0030] In addition, a through groove is provided on the side of the bypass pipe 52 away from the bearing seat 53. The through groove is designed to facilitate demolding after integral casting. During assembly, the through groove is connected with a cover 54 by bolts. The inner side of the cover 54 conforms to the shape of the flow channel to ensure smooth conveying. Removing the cover 54 also makes it easy to inspect the flow channel (such as inner wall wear, foreign object blockage, etc.). The bend 5 can not only convey water, but also rotate and connect at both ends, and also serve as the main support body, making it a multi-purpose unit.

[0031] Structure of main delivery pipe 2: The lower circumferential side of the main conveying pipe 2 is integrally formed with a frustum 11, which simplifies the structure. Both ends of the frustum 11 are provided with a mounting groove. A bearing is installed between the mounting groove and the step seat 51. The upper dimension of the frustum 11 is larger than the lower dimension, so that the diameter of the upper mounting groove is larger than the diameter of the lower mounting groove, and the diameter of the upper bearing is larger than the diameter of the lower bearing, which facilitates installation. This enables the rotation function between the step seat 51 and the frustum 11. The main conveying pipe 2 can not only transport water, but also has the ability to rotate and connect.

[0032] Please see Figure 3 The structure of the first driving structure 3: The first drive structure 3 includes a driven gear 31, a protective box 32, a first drive gear 33, and a first stepper motor 34. The protective box 32 is fixedly installed on the upper side of the stepped seat 51. The protective box 32 is formed by connecting the box bottom and the box body with screws. After the box bottom and the stepped seat 51 are connected by screws, they can also block the bearing at the upper end of the round shoulder 11, preventing the stepped seat 51 and the round shoulder 11 from separating. The upper end of the support plate is also installed on the lower side of the box bottom by screws.

[0033] A first stepper motor 34 is fixedly installed on the lower side of the protective box 32. The output end of the first stepper motor 34 extends into the protective box 32 and a first drive gear 33 is fixedly installed thereon. A driven gear 31 is fixedly installed on the main conveying pipe 2, and the driven gear 31 is located inside the protective box 32. The first drive gear 33 and the driven gear 31 mesh and assemble. The protective box 32 can protect the internal gear structure and ensure stable operation. The protective box 32 has protective capabilities, limiting capabilities, and can also serve as a support foundation.

[0034] When the first stepper motor 34 is working, it can rotate the first drive gear 33 in both directions. Since the driven gear 31 is fixed, while the protective box 32, the bottom bend 5, and the nozzle 8 are rotatably connected to the lower side of the main delivery pipe 2, the first drive gear 33 can move around the driven gear 31 in the circumference, thereby achieving the ability to rotate in the circumference.

[0035] Please see Figure 5 The structure of the rotation limit component 4: The rotation limit component 4 includes a stop block 41, a limit switch 42, a rocker arm 43, and a lever 44. The limit switch 42 is fixedly installed on the lower side of the protective box 32. The rocker arm 43 is rotatably installed on the lower side of the protective box 32 via a pin. An arc-shaped groove is provided at the bottom of the protective box 32. A lever 44 is fixedly installed at one end of the rocker arm 43. The lever 44 extends into the protective box 32 through the arc-shaped groove. A stop block 41 for moving the lever 44 is fixedly installed on the lower side of the driven gear 31.

[0036] When the protective box 32 is turned clockwise (towards) Figure 5(Referring to the direction) When rotated to the limit position, the lever 44 abuts against the stop block 41. At this time, the rocker arm 43 will swing clockwise, causing the end of the rocker arm 43 away from the lever 44 to press the limit switch 42. At this time, the first stepper motor 34 stops outputting, which is equivalent to the initial position of 0°. By swinging the rocker arm 43 and then pressing the limit switch 42, the range of the first drive gear 33 traveling along the driven gear 31 can be expanded, so that the maximum circumferential rotation angle can reach 370°.

[0037] Please see Figure 6 The structure of nozzle 8: The nozzle 8 includes an arc-shaped channel 81, a rotating shaft 82, a pipe seat 83, and a guide pipe 84. The pipe seat 83 is integrally formed on the side wall of the rotating shaft 82. The guide pipe 84 is connected to the pipe seat 83 by screws. The rotating shaft 82 is rotatably mounted between bearing seats 53 by bearings. The rotating shaft 82 has an arc-shaped channel 81 inside that connects the bypass pipe 52 and the pipe seat 83.

[0038] The bypass pipe 52 and the arc-shaped channel 81 can form a complete "U"-shaped flow channel. The rotating shaft 82, the pipe seat 83 and the internal arc-shaped channel 81 are integrally molded, which can reduce the number of parts. When the rotating shaft 82 rotates between the bearing seats 53, it can swing the guide pipe 84. The arc-shaped channel 81 always maintains communication with the bypass pipe 52 and the pipe seat 83, without affecting the water delivery.

[0039] Rotary sealing rings are also provided at the rotating connection points where bearings are installed, namely between the rotating shaft 82 and the bearing housing 53, and between the stepped seat 51 and the round shoulder 11, to ensure the sealing of the rotating parts and prevent water from overflowing along the gaps or entering the bearing and causing corrosion.

[0040] In addition, the inner diameter of the guide pipe 84 gradually decreases along the conveying direction. The guide pipe 84 is fitted with a grid rectifier 12 by interference fit, which is convenient for quick installation. The grid rectifier 12 is a grid-like structure composed of horizontal plates and vertical plates, which is used to rectify the water flow, reduce turbulence and improve jet stability.

[0041] Nozzle 8 can deliver water and also has the functions of rotating connection and rectification.

[0042] Please see Figure 3 The structure of the second drive structure 6: The second drive structure 6 includes a sector gear 61, a second drive gear 62, and a second stepper motor 63. The bearing housing 53 away from the bypass pipe 52 is fixedly mounted with the second stepper motor 63 by a support frame. The output end of the second stepper motor 63 is fixedly mounted with the second drive gear 62. The end of the rotating shaft 82 away from the bypass pipe 52 is fixedly mounted with the sector gear 61 by a key connection. The second drive gear 62 meshes with the sector gear 61.

[0043] Gear 61 and second drive gear 62 are located inside the arc-shaped cover. When the second stepper motor 63 is working, it can rotate the second drive gear 62 in both directions, thereby rotating the rotating shaft 82 through the meshing sector gear 61, realizing the swing action of the guide tube 84.

[0044] The driving method using stepper motors (second stepper motor 63 and first stepper motor 34) has advantages over servo motors: low initial cost, cheap motors, simple drivers; simple maintenance, no vulnerable parts such as encoders, and long lifespan.

[0045] The rotor rotation angle is controlled by input pulse signals, with each pulse corresponding to a fixed step angle (e.g., 1.8°), achieving rotation and positioning without the need for a feedback system.

[0046] Please see Figure 2 The structure of outer shell 9: The outer casing 9 includes an upper casing 91 and a lower casing 92. The main delivery pipe 2 is installed with the upper casing 91 by means of snap-fit, and the protective box 32 is installed with the lower casing 92 by means of screw connection. The ends of the upper casing 91 and the lower casing 92 that are close to each other are radially offset. The lower casing 92 has a through groove for avoiding the nozzle 8.

[0047] The upper cover 91 and the lower cover 92 can form a complete protective shell, respectively shielding the internal structure, without affecting the overall rotation of the bottom and the swinging motion of the nozzle 8.

[0048] In addition, there is space between the upper cover 91 and the protective box 32, which is conducive to the storage and passage of cables, and the cables will not get tangled when the lower cover 92 and the internal structure rotate.

[0049] How the example works: This device simplifies its structure through modular design, making assembly easier and reducing manufacturing costs.

[0050] The device is fixedly installed via flange seat 1 and connected to the central controller (which has an industrial computer, operation panel, etc.) for data acquisition, monitoring, and control.

[0051] During operation, the ultraviolet sensor 13 can first detect the fire source and then start the equipment. The infrared sensor 7 can track the fire source and send control commands to the first drive structure 3 and the second drive structure 6 to adjust the angle of the bend pipe 5 and the nozzle 8 so that the nozzle 8 is accurately aimed at the fire source.

[0052] Once the fire extinguishing device is adjusted to the appropriate fire extinguishing angle, the valve of the fire pipeline is opened, and the water flows through the flange seat 1 into the main delivery pipe 2, and then sequentially through the bypass pipe 52, the arc-shaped channel 81, the pipe seat 83 and the guide pipe 84, and finally sprays out from the guide pipe 84 to extinguish the fire.

[0053] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0054] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An automatic tracking and positioning jet fire extinguishing device, characterized in that: It includes a flange seat (1), a main delivery pipe (2), a bend (5) and a nozzle (8) installed sequentially from top to bottom. The upper end of the bend (5) is rotatably assembled with the main delivery pipe (2) and the lower end of the bend (5) is rotatably assembled with the nozzle (8). The main delivery pipe (2) is equipped with a first drive structure (3) for rotating the bend (5) in the horizontal plane. The first drive structure (3) is provided with a rotation limiter (4). The bend (5) is equipped with a second drive structure (6) for swinging the nozzle (8) in the vertical plane. The main delivery pipe (2), the bend pipe (5) and the nozzle (8) are covered with a shell (9); A camera (10) and an infrared sensor (7) are fixedly installed at the output end of the nozzle (8), and an ultraviolet sensor (13) is fixedly installed on the lower side of the housing (9). A circuit board (14) is fixedly mounted on the lower side of the first drive structure (3) by a support plate, and the support plate covers one side of the second drive structure (6). A switching power supply (15) is fixedly mounted on the side wall of the bent pipe (5) by a support platform. The bent pipe (5) includes a stepped seat (51). The first drive structure (3) includes a driven gear (31), a protective box (32), a first drive gear (33), and a first stepper motor (34). The protective box (32) is fixedly installed on the upper side of the step seat (51), and the first stepper motor (34) is fixedly installed on the lower side of the protective box (32). The output end of the first stepper motor (34) extends into the protective box (32) and is fixedly installed with the first drive gear (33). The driven gear (31) is fixedly installed on the main conveying pipe (2), and the driven gear (31) is located inside the protective box (32). The first drive gear (33) meshes with the driven gear (31). The rotary limiting component (4) includes a stop (41), a limit switch (42), a rocker arm (43), and a lever (44). The limit switch (42) is fixedly installed on the lower side of the protective box (32). The rocker arm (43) is rotatably installed on the lower side of the protective box (32). An arc-shaped groove is provided at the bottom of the protective box (32). A lever (44) is fixedly installed at one end of the rocker arm (43). The lever (44) extends into the protective box (32) through the arc-shaped groove. A stop (41) for moving the lever (44) is fixedly installed on the lower side of the driven gear (31).

2. The automatic tracking and positioning jet fire extinguishing device according to claim 1, characterized in that: The bend (5) includes an integrally formed step seat (51), a bypass pipe (52) and a bearing seat (53). The bearing seats (53) are a pair and located on the same side of the bypass pipe (52). The step seat (51) is connected to the upper side of the bypass pipe (52). A through groove is provided on the side of the bypass pipe (52) away from the bearing seat (53), and a cover (54) is installed on the through groove.

3. The automatic tracking and positioning jet fire extinguishing device according to claim 2, characterized in that: The lower circumferential side of the main conveying pipe (2) is integrally formed with a round shoulder (11), and both ends of the round shoulder (11) are provided with a setting groove. A bearing is installed between the setting groove and the step seat (51).

4. The automatic tracking and positioning jet fire extinguishing device according to claim 2, characterized in that: The nozzle (8) includes an arc-shaped channel (81), a rotating shaft (82), a pipe seat (83), and a guide pipe (84). The side wall of the rotating shaft (82) is integrally formed with a pipe seat (83), and the pipe seat (83) is connected to the guide pipe (84). The rotating shaft (82) is rotatably installed between bearing seats (53) through bearings, and the rotating shaft (82) has an arc-shaped channel (81) inside that connects the bypass pipe (52) and the pipe seat (83).

5. The automatic tracking and positioning jet fire extinguishing device according to claim 4, characterized in that: A grid rectifier (12) is inserted inside the guide tube (84).

6. The automatic tracking and positioning jet fire extinguishing device according to claim 2, characterized in that: The second drive structure (6) includes a sector gear (61), a second drive gear (62), and a second stepper motor (63). The bearing housing (53) away from the bypass pipe (52) is fixedly mounted with the second stepper motor (63) by a support frame. The output end of the second stepper motor (63) is fixedly mounted with the second drive gear (62). The end of the rotating shaft (82) away from the bypass pipe (52) is fixedly mounted with the sector gear (61). The second drive gear (62) meshes with the sector gear (61).

7. The automatic tracking and positioning jet fire extinguishing device according to claim 1, characterized in that: The outer casing (9) includes an upper cover (91) and a lower cover (92). The main delivery pipe (2) is equipped with the upper cover (91), and the protective box (32) is equipped with the lower cover (92). The upper cover (91) and the lower cover (92) are radially offset at their close ends. The lower cover (92) has a through groove for avoiding the nozzle (8).

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