Chemical dangerous article fire safety supervision device and supervision method thereof

Abstract

The application discloses a chemical dangerous article fire safety supervision device and a supervision method thereof, and particularly relates to the field of fire safety, which comprises a second auxiliary gear, a central inner cavity of the second auxiliary gear is rotationally connected with an auxiliary shaft rod, an outer surface of the second auxiliary gear is rotationally connected with a collecting rotating rod through the auxiliary shaft rod, an outer surface of the collecting rotating rod is inserted with an external gas collecting mechanism, a thread is arranged at a connecting position of the auxiliary shaft rod and the collecting rotating rod, when the hollow collecting frame extrudes the rubber block, four groups of rubber blocks are extruded by the outside, the four groups of rubber blocks are combined by extrusion, a closed state is formed, airflow cannot enter the inside of the corresponding plug block frame through the collecting air holes, the gas collecting volume in the inside of the corresponding plug block frame is relatively fixed, the error of single gas collection is reduced, the volume of smoke is gathered in a unit volume, and the smoke is more easily sensed by a smoke detector.

Description

Technical Field

[0001] This invention relates to the field of fire safety technology, and more specifically, to a fire safety monitoring device and method for hazardous chemicals. Background Technology

[0002] Hazardous chemicals are classified into seven categories according to existing regulations: explosives, compressed and liquefied gases, flammable liquids, flammable solids, spontaneously combustible substances and substances that emit flammable gases upon contact with water, oxidizers and organic peroxides, toxic substances and corrosive substances.

[0003] There are many types of hazardous chemicals. If a hazardous chemical leak or fire occurs in the air, smoke detectors will transmit electrical signals to alarm devices when the chemical agent is burning, prompting personnel to quickly put out the fire. However, smoke detectors usually wait for the outside air to rise slowly until the smoke rises to their sensing area before transmitting electrical signals. The rising smoke indicates that the hazardous chemical has been burning for a long time. Compared with conventional materials, hazardous chemicals are more difficult to extinguish, resulting in low overall monitoring efficiency of existing fire safety monitoring devices. Summary of the Invention

[0004] To overcome the aforementioned deficiencies of the prior art, embodiments of the present invention provide a fire safety monitoring device and method for monitoring hazardous chemicals. When the hollow collection frame compresses the rubber blocks, the four sets of rubber blocks are subjected to external compression, causing them to merge and form a seal. This prevents airflow from entering the internal area of ​​the corresponding insert frame through the collection holes. Consequently, the gas collection volume inside the corresponding insert frame is relatively fixed, reducing errors in single gas collection. Within a unit volume, the smoke volume is concentrated, making it easier for a smoke detector to sense, thus solving the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a fire safety monitoring device for hazardous chemicals, comprising a second auxiliary gear, wherein an auxiliary shaft is rotatably connected to the central inner cavity of the second auxiliary gear.

[0006] Furthermore, a collecting rod is rotatably connected to the outer surface of the second auxiliary gear via an auxiliary shaft.

[0007] Furthermore, an external gas collection mechanism is inserted into the outer surface of the collecting rod, and the connection between the auxiliary shaft and the collecting rod is threaded.

[0008] Furthermore, the external gas collection mechanism includes a supporting outer frame, and a gas collection hole is provided on one side of the supporting outer frame.

[0009] Furthermore, a second sealing block is fixedly connected to the other side of the supporting outer frame, and a first sealing block is fixedly connected to the other side of the supporting outer frame.

[0010] Furthermore, a sealing interval is set between the first sealing block and the second sealing block, and a corresponding insert bracket is inserted between the first sealing block and the second sealing block.

[0011] The technical effects and advantages of this invention are as follows:

[0012] 1. When the hollow collection rack compresses the rubber plugs, the four sets of rubber plugs are subjected to external compression. The four sets of rubber plugs are compressed and merged to form a seal. The airflow cannot enter the internal area of ​​the corresponding insert frame from the collection port. At this time, the gas collection volume inside the corresponding insert frame is relatively fixed, reducing the error of gas collection per time. Within a unit volume, the volume of smoke is concentrated, making it easier to be detected by the smoke detector. It should be noted that when chemicals burn, the smoke will disperse with the air in the monitored area, making it even less likely to be detected by the smoke detector, thus improving the monitoring efficiency of the device.

[0013] 2. This invention establishes a pass-through frequency model and a diagnostic model for the drive gear to determine its rotational frequency, providing a reliable structural framework for the use of fire safety monitoring devices. The pass-through frequency model and diagnostic model are easy to understand and establish, and are built on the basis of existing technology. Appropriate drive gears can be selected according to the specific use scenarios of the fire safety monitoring device. The pass-through frequency model and diagnostic model can be widely promoted and used simultaneously with the monitoring device.

[0014] 3. The positioning block is limited by the slide rail frame, causing the positioning block to slide only on the auxiliary slide rail of the slide rail frame. The locking gear rotates clockwise around the second auxiliary gear and drives the sliding gear to slide outward in the inner cavity of the slide rail frame through the second locking rod. The positioning block, along with the monitoring camera, detects the monitored area. As the two sets of monitoring cameras slide outward, the field of view for external monitoring is increased. At the same time, when the forward and reverse motor reverses, the spiral column rotates counterclockwise with the output end of the forward and reverse motor. Similarly, the monitoring camera moves inward. Both slide towards the center of the outer frame of the monitoring device to avoid any areas being missed. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the monitoring device of the present invention.

[0016] Figure 2 This is a cross-sectional view of the monitoring device of the present invention.

[0017] Figure 3 For the present invention Figure 2 Enlarged view of the structure of part A.

[0018] Figure 4 This is a schematic diagram of the auxiliary shaft of the present invention.

[0019] Figure 5 This is a schematic diagram of the structure of the surveillance camera of the present invention.

[0020] Figure 6 For the present invention Figure 5 Enlarged view of the structure of part B.

[0021] Figure 7 This is a schematic diagram of the structure of the rubber plug of the present invention.

[0022] Figure 8 This is a schematic diagram of the corresponding insert holder of the present invention.

[0023] Figure 9 For the present invention Figure 8 Enlarged view of the C-section structure.

[0024] Figure 10 For the present invention Figure 8 Enlarged view of the structure of part D.

[0025] The attached figures are labeled as follows: 1. Outer frame of the monitoring device; 2. Mounting frame; 3. Monitoring camera; 4. External gas collection mechanism; 401. Collection port; 402. Supporting outer frame; 403. Rubber gear teeth; 404. Rubber plug; 405. Auxiliary bending frame; 406. Mounting groove; 407. First sealing block; 408. Second sealing block; 409. Corresponding insert frame; 5. Main control gear; 6. Second auxiliary gear; 7. Locking gear; 8. First locking rod; 9. Second locking rod; 10. Sliding gear; 11. Slide rail frame; 12. Positioning block; 13. Mounting fixing frame; 14. Spiral column; 15. Mounting rod; 16. Hollow collection frame; 17. Auxiliary shaft; 18. Collection rotating rod; 19. Smoke detector; 20. Blocking block; 21. Movable locking plate; 22. Rubber sleeve; 23. Airflow blocking plate; 24. Positioning slot; 25. Active spring locking teeth. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] refer to Figure 1-5Example 1: A main control gear 5 is rotatably connected to one side of the second auxiliary gear 6. A mounting rod 15 is rotatably connected to one side of the main control gear 5. A monitoring device outer frame 1 is rotatably connected to the outer surface of the mounting rod 15. Four sets of mounting brackets 2 are fixedly connected to one side of the monitoring device outer frame 1. Two sets of mounting brackets 13 are fixedly connected to the other side of the monitoring device outer frame 1. A spiral column 14 is rotatably connected between the two sets of mounting brackets 13. The spiral column 14 is meshed with the main control gear 5. A forward and reverse motor is electrically connected to one end of the spiral column 14 that passes through the mounting bracket 13. The main control gear 5 rotates synchronously with the second auxiliary gear 6 through the auxiliary shaft 17. In this configuration, two sets of first engaging rods 8 are rotatably connected to the outer surface of the auxiliary shaft 17. The installation height of one set of first engaging rods 8 on the outer surface of the auxiliary shaft 17 is higher than that of the other set of first engaging rods 8. The ends of the two sets of first engaging rods 8 are rotatably connected to the same number of locking gears 7. The outer surfaces of the two sets of locking gears 7 are rotatably connected to two sets of second engaging rods 9. The ends of the two sets of second engaging rods 9 are rotatably connected to sliding gears 10. Rotating rods are inserted into the inner cavities of the two sets of sliding gears 10. Positioning blocks 12 are inserted into the outer surfaces of the rotating rods of the sliding gears 10. The positioning blocks 12 are slidably connected to the slide rail frame 11 via auxiliary slide rails. Inside the cavity, a monitoring camera 3 is rotatably connected to one end of the sliding gear 10's rotating rod that passes through the positioning block 12. Limit sleeves are fitted between the sliding gear 10 and the second engaging rod 9, the second engaging rod 9 and the positioning gear 7, the positioning gear 7 and the first engaging rod 8, and the first engaging rod 8 and the auxiliary shaft 17. The second auxiliary gear 6 and the positioning gear 7, and the positioning gear 7 and the sliding gear 10 are kept in a meshing connection. The forward and reverse motor model is SRS-380. Further, bearings are fitted at the connection points between the two sets of first engaging rods 8 and the auxiliary shaft 17, and limit sleeves are fitted between the first engaging rods 8 and the auxiliary shaft 17. Therefore, the two sets of first engaging rods 8 are in a meshing connection with the auxiliary shaft 17. The outer surface of the auxiliary shaft rod 17 only rotates. The locking gear 7 is a gear with a rod structure. The locking gear 7 is rotatably connected to the end of the first engaging rod 8 through a bearing. A limit sleeve is fitted at the connection between the locking gear 7 and the first engaging rod 8, so the locking gear 7 will not float up and down when rotating. At the same time, the length from the center of the connection between the first engaging rod 8 and the auxiliary shaft rod 17 to the center of the connection between the first engaging rod 8 and the locking gear 7 is the sum of the radii of the second auxiliary gear 6 and the locking gear 7. The first engaging rod 8 plays a limiting role, so the locking gear 7 can only rotate around the second auxiliary gear 6 and always maintain the meshing state.

[0028] Furthermore, bearings are fitted at the connection points between the sliding gear 10 and the second engaging rod 9, and limit sleeves are also fitted at the upper and lower parts of the bearing connection between the sliding gear 10 and the second engaging rod 9. The length from the center of the connection point between the second engaging rod 9 and the locking gear 7 to the center of the connection point between the second engaging rod 9 and the sliding gear 10 is the sum of the radii of the locking gear 7 and the sliding gear 10. The second engaging rod 9 plays a limiting role. The sliding gear 10 is limited by the bearings on the one hand, and on the other hand, it meshes with the locking gear 7 through the second engaging rod 9, so the sliding gear 10 will not float up and down when rotating.

[0029] The mounting frame 2 is fixed to the top wall of the chemical hazardous materials. In order to completely cover the entire area to be monitored, traditional chemical hazardous materials fire safety monitoring devices need to be installed on the wall, which consumes a lot of costs.

[0030] It should be noted that the forward and reverse motor serves as the drive source. Since the output end of the forward and reverse motor can rotate in both directions, when the forward and reverse motor rotates in the forward direction, the spiral column 14 rotates clockwise following the output end of the forward and reverse motor. The spiral column 14 drives the main control gear 5 to rotate clockwise through meshing with the main control gear 5. Since the top mounting rod 15 of the main control gear 5 is fixed to the inner cavity of the outer frame 1 of the monitoring device, the main control gear 5 remains in place and only rotates clockwise. The main control gear 5 drives the second auxiliary gear 6 to rotate clockwise synchronously through the bearing of the second auxiliary gear 6. The second auxiliary gear 6 is connected to the locking gear 7 through the first locking rod 8. The first locking rod 8 limits the position of the locking gear 7. The locking gear 7 is connected to the second auxiliary gear 6 through meshing. The locking gear 7 rotates clockwise around the outer surface of the second auxiliary gear 6. Similarly, the locking gear 7... The sliding gear 10 is engaged with the second engaging rod 9, and the sliding gear 10 rotates clockwise around the outer surface of the locking gear 7. Since the rotating rod of the sliding gear 10 is inserted into the positioning block 12, the positioning block 12 is limited by the slide rail frame 11, so the positioning block 12 can only slide on the auxiliary slide rail of the slide rail frame 11. The locking gear 7 rotates clockwise around the second auxiliary gear 6 and, through the second engaging rod 9, carries the sliding gear 10 to slide outward in the inner cavity of the slide rail frame 11. The positioning block 12 carries the monitoring camera 3 to detect the monitored area. Since the two sets of monitoring cameras 3 slide outward, the field of view for external monitoring is increased. At the same time, when the forward and reverse motor reverses, the spiral column 14 rotates counterclockwise with the output end of the forward and reverse motor. Similarly, the monitoring camera 3 moves inward. The two slide towards the center of the outer frame 1 of the monitoring device to avoid any area not being detected.

[0031] By establishing the passing frequencies of the inner and outer rings of the main control gear, the rotational frequency control of the main control gear is achieved. The following formula is used to derive the motion parameters of the main control gear, and this data, combined with the working environment, provides a data basis for subsequent diagnosis of the operating status of the main control gear.

[0032] Establish the passing frequency model of the outer ring of the main control gear, with the following expression:

[0033]

[0034] Where a1 represents the passing frequency of the main control outer ring, α represents the rotation angle of the main control gear, d represents the diameter of the small gear, D represents the diameter of the large gear, and a i a0 represents the rotational frequency of the large wheel, and a0 represents the rotational frequency of the small wheel.

[0035] Frequency of the main control gear passing through the inner ring:

[0036]

[0037] Where a2 represents the passing frequency of the inner ring of the main control gear, d represents the diameter of the small gear, D represents the diameter of the large gear, and a i α represents the rotational frequency of the large gear, and α represents the gear rotation angle.

[0038] A diagnostic model for the main control gear is established. This model can be used to diagnose the operating state of the gear. The expression is as follows:

[0039] g′ i =p(g∈i|H,δ)

[0040] Where δ represents the diagnostic model calculation parameters; H represents the input quantity; p represents the standardized feature vector; g' i This represents the confidence level of the signal data belonging to the i-th operating state, where i represents the operating state and g represents the confidence level.

[0041] By establishing a frequency model and a diagnostic model for the drive gear, the rotational frequency of the drive gear can be determined, providing a reliable framework for the use of fire safety monitoring devices. The frequency model and diagnostic model are easy to understand and establish, and are built on the basis of existing technology. The appropriate drive gear can be selected according to the specific application scenario of the fire safety monitoring device. The frequency model and diagnostic model can be widely promoted and used simultaneously with the monitoring device.

[0042] Meanwhile, since the rotating rod of the sliding gear 10 is inserted into the inner cavity of the positioning block 12, it does not affect the rotation of the rotating rod with the sliding gear 10. Therefore, the monitoring camera 3 continues to rotate during the movement, making the monitoring field of view wider and improving the monitoring efficiency.

[0043] refer to Figure 6-8Example 2: A fire safety monitoring device for hazardous chemicals includes a second auxiliary gear 6. An auxiliary shaft 17 is rotatably connected to the central inner cavity of the second auxiliary gear 6. A collecting rod 18 is rotatably connected to the outer surface of the second auxiliary gear 6 through the auxiliary shaft 17. An external gas collecting mechanism 4 is inserted into the outer surface of the collecting rod 18. A thread is provided at the connection between the auxiliary shaft 17 and the collecting rod 18. The collecting rod 18 is inserted into the interior of the slide rail frame 11. A vertical track is provided at the connection between the slide rail frame 11 and the collecting rod 18.

[0044] The external gas collection mechanism 4 includes a supporting outer frame 402. A gas collection hole 401 is provided on one side of the supporting outer frame 402. A second sealing block 408 is fixedly connected to the other side of the supporting outer frame 402, and a first sealing block 407 is fixedly connected to the other side of the supporting outer frame 402. A sealing interval is formed between the first sealing block 407 and the second sealing block 408. A corresponding insert bracket 409 is inserted between the first sealing block 407 and the second sealing block 408, and the inner surface of the corresponding insert bracket 409 is fixed. A rubber wheel tooth 403 is connected to the outer frame 402. Four sets of auxiliary bending frames 405 are fixedly connected to the other side. A rubber block 404 is fixedly connected to the top of the four sets of auxiliary bending frames 405. The four sets of rubber block 404 and auxiliary bending frames 405 are arranged in a circumferential array about the center of the air collection hole 401. There are multiple sets of rubber wheel teeth 403. The multiple sets of rubber wheel teeth 403 are arranged in a circumferential array about the center of the air collection hole 401. The outer surface of the corresponding insert block frame 409 is provided with a mounting groove 406.

[0045] It should be noted that, since the auxiliary shaft 17 and the collecting rotating rod 18 are connected by threads, and the collecting rotating rod 18 is inserted into the vertical track, the collecting rotating rod 18 can only move up and down in the vertical track. When the auxiliary shaft 17 rotates clockwise, since the auxiliary shaft 17 is fixed to the second auxiliary gear 6 and maintains the same rotation state, the collecting rotating rod 18 falls off the threads of the auxiliary shaft 17 and slides on the vertical track of the slide rail frame 11. It should be noted that the sliding distance of the collecting rotating rod 18 will not exceed the threaded connection distance between the collecting rotating rod 18 and the auxiliary shaft 17. The collecting rotating rod 18, through the hollow collecting frame 16, with the active spring retaining tooth 25, is inserted into the inner wall of the corresponding insert block frame 409. The active spring retaining tooth 25 is adapted to the rubber wheel tooth 403, and the two are inserted to form a sealed area. Since the active spring retaining tooth 25 and the rubber wheel tooth 403 are both made of rubber, after they mesh, the two contacts are sticky, which has a good effect on sealing the air.

[0046] The hollow collection rack 16 moves downwards in the inner cavity of the corresponding insert rack 409. When the rubber sleeve 22 moves down to the position of the rubber block 404, it squeezes the rubber block 404, causing it to deform according to the characteristics of the rubber itself. Then, it passes over the rubber block 404 and gets stuck on the outer wall of the four sets of auxiliary bending racks 405. The rubber block 404 loses pressure and returns to its original position. The airflow inside the corresponding insert rack 409 is then discharged to the collection air hole 401, completely draining the airflow and avoiding excess residue accumulating inside during a single airflow collection, thus affecting the monitoring effect of the smoke detector 19.

[0047] refer to Figure 1-10 Example 3: A hollow collection frame 16 is fixedly connected to the bottom end of the collecting rod 18. Four sets of smoke detectors 19 are installed inside the hollow collection frame 16, forming a smoke detection zone within the cavity. A rubber sleeve 22 is fixedly connected to the side of the hollow collection frame 16 away from the smoke detectors 19, and an active spring tooth 25 is fixedly connected to the side of the hollow collection frame 16 away from the rubber sleeve 22. Slide rail frames 11 are installed on both sides of the collecting rod 18. An auxiliary slide rail is provided on the inner side of the slide rail frame 11. A blocking block 20 is fixedly connected to the bottom end of the slide rail frame 11. A positioning slot 24 is provided on the side of the blocking block 20 that is at the same horizontal line as the placement groove 406. Four sets of movable plates 21 are rotatably connected to the inner cavity of the positioning slot 24, and the four sets of movable plates 21 are fixedly connected to the placement groove 406. The inner cavity, the movable card plate 21 is set in a rotating state in the inner cavity of the positioning slot 24, the slide rail frame 11 is fixedly connected to one side of the airflow blocking plate 23 which is set at a 30-degree angle to the blocking block 20, the diameter of the hollow collection frame 16 is smaller than the diameter of the corresponding insert block frame 409, multiple sets of active spring teeth 25 are inserted into the inner cavity of the hollow collection frame 16 and are adapted to multiple sets of rubber wheel teeth 403, four sets of rubber plugs 404 form a first cylinder, the diameter of the rubber sleeve 22 is smaller than the circular diameter of the first cylinder formed by the four sets of rubber plugs 404, four sets of auxiliary bending frames 405 form a second cylinder, the circular diameter of the first cylinder formed by the four sets of rubber plugs 404 is larger than the circular diameter of the second cylinder formed by the four sets of auxiliary bending frames 405, and the smoke detector 19 is model ZQ-DLYG-CE.

[0048] It should be noted that when the auxiliary shaft 17 rotates counterclockwise, in reference to the implementation force 2, the hollow collection rack 16 located at the bottom of the inner wall of the outer support frame 402 moves upward. The distance from the bottom of the outer support frame 402 to the lower surface of the rubber block 404 is the gas collection area. The hollow collection rack 16 makes an upward piston movement. According to the influence of the internal air pressure of the corresponding insert frame 409, the external airflow is quickly introduced from the collection air hole 401 to the interior of the corresponding insert frame 409, which increases the rapid collection of airflow at the bottom of the device and reduces the gas collection time after the chemical combustion.

[0049] Until the hollow collection rack 16 squeezes the rubber block 404, the four sets of rubber blocks 404 are squeezed by the outside and merged to form a seal. Then the airflow cannot enter the internal area of ​​the corresponding insert rack 409 from the collection hole 401. At this time, the gas collection volume inside the corresponding insert rack 409 is relatively fixed, reducing the error of gas collection in a single time. The volume of smoke is concentrated in a unit volume, making it easier to be detected by the smoke detector 19. It should be noted that when chemicals burn, the smoke will disperse with the air in the monitored area, making it less likely to be detected by the smoke detector 19, thus improving the monitoring efficiency of the device. After the smoke detector 19 detects the smoke, it transmits the signal to the alarm device through an electrical signal to remind emergency fire extinguishing.

[0050] As the hollow collection rack 16 continues to move upward, the rubber block 404 returns to its original state according to the properties of rubber, and external air re-enters the corresponding insert rack 409 through the collection air hole 401. This helps to expel all the substances that entered the corresponding insert rack 409 last time when the hollow collection rack 16 moves downward, thus avoiding affecting the test results.

[0051] The airflow baffle 23 and the movable plate 21 block the outside air, causing the collecting port 401 to mainly absorb the air below. Meanwhile, the baffle block 20 is made of rubber. When the external gas collecting mechanism 4 needs maintenance and inspection, the baffle block 20 is manually pulled outward to disengage the movable plate 21 from the positioning slot 24, so that the external gas collecting mechanism 4 can be removed for inspection.

[0052] A method for supervising the fire safety of hazardous chemicals includes the following steps:

[0053] S1: The locking gear 7 rotates clockwise around the second auxiliary gear 6 and slides the sliding gear 10 outward in the inner cavity of the slide rail frame 11 through the second locking rod 9. Then the positioning block 12 carries the monitoring camera 3 to detect the monitored area. The two sets of monitoring cameras 3 slide outward to form a horizontal external monitoring field of view.

[0054] S2: The rotating rod of the sliding gear 10 passes through the inner cavity of the positioning block 12 and drives the monitoring camera 3 to continue rotating during the movement, so that the monitoring field of view changes from single detection to multi-angle area detection.

[0055] S3: The hollow collection rack 16 makes a downward piston movement in the inner cavity of the corresponding insert rack 409. When the rubber sleeve 22 moves down to the position of the rubber block 404, it squeezes the rubber block 404, causing it to deform according to the characteristics of the rubber itself. Then it passes over the rubber block 404 and gets stuck on the outer wall of the four sets of auxiliary bending racks 405. Then the rubber block 404 loses pressure and returns to its original position. Then the airflow inside the corresponding insert rack 409 is discharged to the collection air hole 401, and all the airflow is discharged to form a relatively undisturbed gas collection area.

[0056] S4: The hollow collection rack 16 makes an upward piston movement. According to the influence of the internal air pressure of the corresponding insert rack 409, the external airflow is quickly introduced from the collection air hole 401 to the interior of the corresponding insert rack 409 to complete a single gas collection. The smoke detector 19 monitors the collected gas.

[0057] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0058] Secondly: The accompanying drawings of the embodiments disclosed in this invention only involve the structures involved in the embodiments disclosed in this invention. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this invention can be combined with each other.

[0059] In conclusion, the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A fire safety monitoring device for hazardous chemicals, characterized in that... : Includes a second auxiliary gear (6), the central cavity of which is rotatably connected to an auxiliary shaft (17); The main control gear (5) is rotatably connected to one side of the second auxiliary gear (6), and the main control gear (5) is set to rotate synchronously with the second auxiliary gear (6) through the auxiliary shaft (17); The outer surface of the second auxiliary gear (6) is rotatably connected to a collecting rod (18) via an auxiliary shaft (17). An external gas collecting mechanism (4) is inserted into the outer surface of the collecting rod (18). A thread is provided at the connection between the auxiliary shaft (17) and the collecting rod (18). The external gas collection mechanism (4) includes a supporting outer frame (402). A gas collection hole (401) is provided on one side of the supporting outer frame (402). A first sealing block (407) and a second sealing block (408) are fixedly connected to the other side of the supporting outer frame (402). A sealing interval is set between the first sealing block (407) and the second sealing block (408). A corresponding insert bracket (409) is inserted between the first sealing block (407) and the second sealing block (408). Rubber wheel teeth (403) are fixedly connected to the inner surface. Four sets of auxiliary bending frames (405) are fixedly connected to the other side of the supporting outer frame (402). Rubber plugs (404) are fixedly connected to the top of the four sets of auxiliary bending frames (405). The four sets of rubber plugs (404) and auxiliary bending frames (405) are arranged in a circumferential array about the center of the collecting air hole (401). There are multiple sets of rubber wheel teeth (403). The multiple sets of rubber wheel teeth (403) are arranged in a circumferential array about the center of the collecting air hole (401). A hollow collection frame (16) is fixedly connected to the bottom end of the collecting rod (18). Four sets of smoke detectors (19) are installed in the inner cavity of the hollow collection frame (16). The four sets of smoke detectors (19) form a smoke detection zone in the inner cavity of the hollow collection frame (16). A rubber sleeve (22) is fixedly connected to the side of the hollow collection frame (16) away from the smoke detector (19). An active spring tooth (25) is fixedly connected to the side of the hollow collection frame (16) away from the rubber sleeve (22). The diameter of the hollow collection frame (16) is smaller than that of the corresponding insert frame (409). The diameter of the cavity of the hollow collection frame (16) is such that multiple sets of active spring teeth (25) are inserted into the cavity of the corresponding insert frame (409) and are adapted to multiple sets of rubber wheel teeth (403). Four sets of rubber plugs (404) form the first cylinder. The diameter of the rubber sleeve (22) is smaller than the circular diameter of the first cylinder formed by the four sets of rubber plugs (404). Four sets of auxiliary bending frames (405) form the second cylinder. The circular diameter of the first cylinder formed by the four sets of rubber plugs (404) is larger than the circular diameter of the second cylinder formed by the four sets of auxiliary bending frames (405).

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