Fire monitoring and alarming device for mining coal transportation system

Abstract

The invention relates to the technical field of mine safety, and discloses a mine coal transportation system fire monitoring alarm device which comprises a mine coal transportation smoke detector, a smoke detector bottom cover is fixedly arranged at the bottom of the mine coal transportation smoke detector, smoke inlets are formed in the two sides of the smoke detector bottom cover, a smoke suction fan is fixedly installed in the smoke detector bottom cover, and a smoke exhaust fan is fixedly installed in the smoke detector bottom cover. The smoke inlets of the smoke detector bottom covers are provided with coal conveying line smoke suction mechanisms arranged along the coal conveying line. Under the suction force of the smoke suction fan, the interior of the extension cylinder is always kept in a negative pressure state, air above the conveying belt is sucked into the extension cylinder, the air flows into the water storage cylinder along the condensation flow guide plate, and under the blowing of the air exhausted by the smoke suction fan, the temperature in the low-temperature chamber is lower than the temperature of the external air; condensation is formed when air makes contact with the condensation flow guide plate, water mist for restraining flying of carbon dust from entering the mine coal transportation smoke detector is reduced, and misjudgment alarms caused by the water mist of the mine coal transportation smoke detector can be reduced.

Description

Technical Field

[0001] The invention relates to the field of mine safety, and more specifically to a fire monitoring and alarm device for a coal transportation system used in a mine. Background Art

[0002] The fire monitoring and alarm device of the coal transportation system in mines is a device used to detect whether there is smoke in the mine environment. Its main purpose is to promptly discover fire hazards, ensure the safety of mine operations, enable construction personnel to understand the air composition in the mine, and reduce the probability of safety accidents.

[0003] In mines, real-time monitoring of coal mine fires on conveyor belts is an important measure to ensure safe production. Multiple coal transportation system fire monitoring and alarm devices are used to monitor smoke particles in the air during the entire coal transportation process in the mine to determine whether a fire has occurred. Once the coal transportation system fire monitoring and alarm device detects that the concentration of smoke particles exceeds the preset threshold, an alarm will be triggered to remind miners to take escape or fire extinguishing measures in time.

[0004] However, during transportation, friction will occur when the coal blocks come into contact with conveyor belts, loading equipment, storage facilities, etc. Due to long-term friction and extrusion, the coal blocks sometimes generate high temperatures, which may cause fire safety risks. It is necessary to spray water mist on the coal blocks on the conveyor belt. The water mist sprayed in the air may be sucked into the fire monitoring and alarm device of the mine coal transportation system, causing false alarms. To this end, we propose a fire monitoring and alarm device for the mine coal transportation system. Summary of the invention

[0005] The present invention provides a fire monitoring and alarm device for a coal transportation system in a mine, which solves the technical problem in the related art that water mist sprayed in the air may enter the fire monitoring and alarm device for a coal transportation system in a mine, causing a false alarm.

[0006] The present invention provides a fire monitoring and alarm device for a coal transportation system in a mine, comprising: a coal transportation smoke detector for a mine, a bottom cover of the smoke detector is fixedly arranged at the bottom of the coal transportation smoke detector for a mine, smoke inlets are provided on both sides of the bottom cover of the smoke detector, a smoke exhaust fan is fixedly installed inside the bottom cover of the smoke detector, and a coal transportation line smoke exhaust mechanism arranged along the coal transportation route is arranged on the smoke inlet of the bottom cover of the smoke detector, which is used for separating smoke, coal dust and water mist in the air above the coal transportation conveyor belt and guiding them into the coal transportation smoke detector for a mine;

[0007] The coal transportation line smoking mechanism includes an extension cylinder parallel to the coal transportation conveyor belt, and two rows of mutually symmetrical condensation guide plates are fixedly arranged inside the extension cylinder. The sealed space formed by the two rows of condensation guide plates and the extension cylinder is a low-temperature chamber, which is used to condense the water mist in the air above the coal transportation conveyor belt;

[0008] A smoke stratification mechanism is arranged below the two rows of condensation guide plates to guide smoke in the air on the coal transport conveyor belt into the bottom cover of the smoke detector. The smoke stratification mechanism comprises a water storage cylinder, and a seesaw rotating column is fixedly arranged on the outer wall of the water storage cylinder.

[0009] Furthermore, a smoke outlet mesh plate is fixedly provided at the air outlet end of the smoke exhaust fan, and two diversion pipes are fixedly provided on the smoke outlet mesh plate. The two diversion pipes are interconnected with the smoke exhaust fan and are used to divert a part of the fast-flowing smoke blown out by the smoke exhaust fan, and the two diversion pipes both pass through the outer wall of the coal transportation smoke detector in the mine.

[0010] Furthermore, one end of the two shunt pipes away from the mine coal transportation smoke detector passes through the extension tube and is interconnected with the low-temperature chamber. A cooling outlet is provided at the air outlet end of the low-temperature chamber away from the mine coal transportation smoke detector, which is used to discharge the smoke provided by the shunt pipe flowing to the far end at the end of the low-temperature chamber away from the mine coal transportation smoke detector.

[0011] Furthermore, a plurality of shaft wall fixing members are fixedly provided on the upper wall of the extension tube, and the plurality of shaft wall fixing members are used to fix the extension tube on the mining machine wall above the coal transport conveyor belt and adjust the horizontality of the extension tube at the same time.

[0012] Furthermore, two identical and mutually symmetrical smoke inlet guide covers are fixedly arranged on the lower wall of the extension tube, and the smoke inlet guide covers and the extension tube form a three-quarter gourd shape. The length of the extension tube wall at the connecting end of the extension tube and the smoke inlet guide covers gradually decreases from the end close to the mine coal transportation smoke detector to the end away from the end, and the contact distance between the extension tube and the water storage cylinder gradually increases from the end close to the mine coal transportation smoke detector to the end away from the end.

[0013] Furthermore, the outer walls of the two rows of condensation guide plates are provided with a plurality of guide drip grooves, and the center lines of the two rows of condensation guide plates along the coal transportation route are aligned with the center line of the water storage cylinder.

[0014] Furthermore, a temporary storage chamber is provided at one end of the water storage cylinder away from the mine coal transportation smoke detector, and a flushing chamber is provided at one end of the water storage cylinder close to the mine coal transportation smoke detector, and the distance from the temporary storage chamber to the seesaw rotating column is smaller than the distance from the flushing chamber to the seesaw rotating column, and at the same time, the weight of the section from the temporary storage chamber to the seesaw rotating column is greater than the weight from the flushing chamber to the seesaw rotating column.

[0015] Furthermore, a counterweight column is fixedly installed above the temporary storage chamber, and a limiting cable is fixedly installed at the center position of the counterweight column. The end of the limiting cable away from the counterweight column is fixedly connected to the inner wall of the extension tube, and the height of one end of the temporary storage chamber is lower than that of the other end of the flushing chamber, and the limiting cable is in a stretched state.

[0016] Furthermore, a soft rubber channel is fixedly provided at one end of the flushing chamber near the bottom cover of the smoke detector, and the end of the soft rubber channel near the bottom cover of the smoke detector is fixed and sealed to the outer wall of the bottom cover of the smoke detector. At the same time, the flushing chamber is connected with the smoke inlet through the soft rubber channel, and a coal dust mesh is fixedly provided in the smoke inlet. The upper and lower ends of the coal dust mesh are provided with shaking net shrapnel fixedly connected to the smoke inlet, and the shaking net shrapnel is an arc-shaped structure, and a pull wire is fixedly provided on the shaking net shrapnel, and the end of the pull wire away from the shaking net shrapnel is fixedly connected to the flushing chamber.

[0017] Furthermore, a drain port is provided on the bottom wall of the smoke detector bottom cover, a baffle door rotatably connected to the smoke detector bottom cover is provided below the drain port, and the baffle door is rotatably connected to the smoke detector bottom cover through a torsion spring, and the size of the baffle door is larger than the size of the drain port.

[0018] The beneficial effects of the present invention are:

[0019] The air of the present invention always keeps the inside of the extension tube in a negative pressure state under the suction force of the smoking fan, and the air above the conveyor belt is sucked into the extension tube, and the air flows into the water storage tube along the condensation guide plate, so that the temperature in the low-temperature chamber is lower than the external air temperature under the blowing of the air discharged by the smoking fan, and condensation is formed when the air contacts the condensation guide plate, thereby reducing the water mist that enters the coal transportation smoke detector in the mine in order to suppress the flying of carbon dust, which is conducive to reducing the false alarm caused by the water mist in the coal transportation smoke detector in the mine;

[0020] The condensed water gathers in the section from the temporary storage room to the seesaw rotary column until the gathered water passes over the seesaw rotary column and reaches the section from the flushing room to the seesaw rotary column, making the weight of the section from the flushing room to the seesaw rotary column greater than the section from the temporary storage room to the seesaw rotary column. The gathered condensed water will quickly impact the coal dust mesh at the smoke inlet and wash away the carbon dust adsorbed on the coal dust mesh, which is helpful to prevent the coal dust mesh from being blocked and causing delayed alarm of the mine coal transportation smoke detector. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 The present invention Figure 1 The enlarged schematic diagram at A in the middle;

[0023] Figure 3 It is a schematic diagram of the structure of the smoking fan of the present invention;

[0024] Figure 4 The present invention Figure 3 The enlarged schematic diagram of point B in the middle;

[0025] Figure 5 It is a schematic diagram of the bottom cover structure of the smoke detector of the present invention;

[0026] Figure 6 It is a schematic diagram of a partial cross-sectional structure of an extension tube of the present invention;

[0027] Figure 7 The present invention Figure 6 The enlarged schematic diagram at C in the middle;

[0028] Figure 8 It is a schematic diagram of the connection structure between the extension tube and the smoke inlet guide cover of the present invention;

[0029] Fig. 9 It is a schematic diagram of the structure of the water storage cylinder of the present invention;

[0030] Fig.10 The present invention Fig. 9 Enlarged schematic diagram at point D in the middle.

[0031] In the figure: 11. Smoke detector for coal transportation in mine; 12. Bottom cover of smoke detector; 13. Smoke exhaust fan; 14. Smoke outlet mesh plate; 15. Smoke inlet; 16. Drain outlet; 17. Door; 2. Smoke exhaust mechanism for coal transportation line; 21. Extension tube; 22. Smoke inlet guide cover; 23. Cooling outlet; 24. Diverter pipe; 25. Shaft wall fixings; 26. Condensation guide plate; 27. Low temperature chamber; 28. Diversion drip trough; 3. Smoke stratification mechanism; 31. Water storage cylinder; 32. Temporary storage room; 33. Flushing room; 34. Soft rubber road; 35. Seesaw rotating column; 36. Counterweight column; 37. Limiting cable; 38. Coal dust mesh; 39. Pull wire; 301. Shaking net shrapnel. DETAILED DESCRIPTION

[0032] The subject matter described herein will now be discussed with reference to example embodiments. It should be understood that the discussion of these embodiments is only to enable those skilled in the art to better understand and implement the subject matter described herein, and the functions and arrangements of the elements discussed may be changed without departing from the scope of protection of the contents of this specification. Each example may omit, replace or add various processes or components as needed. In addition, the features described relative to some examples may also be combined in other examples.

[0033] like Figure 1 - Fig.10As shown, a fire monitoring and alarm device for a coal transportation system in a mine comprises: a coal transportation smoke detector 11 in a mine, a smoke detector bottom cover 12 is fixedly arranged at the bottom of the coal transportation smoke detector 11 in the mine, smoke inlets 15 are opened on both sides of the smoke detector bottom cover 12, and a smoking fan 13 is fixedly installed inside the smoke detector bottom cover 12. Pieces of coal are carried by a conveyor belt and slowly transported out of the mine. During the transportation process day after day, the coal blocks sometimes generate high temperatures due to long-term friction and extrusion, forming a potential fire hazard, which is monitored by the coal transportation smoke detector 11 in the whole process. Once the temperature of the coal blocks on the conveyor belt rises abnormally and smoke is generated, the smoke enters the smoke detector bottom cover 12 from the smoke inlet 15, and the smoke is blown into the light source signal area of ​​the coal transportation smoke detector 11 in the mine by the smoking fan 13. The smoke particles will scatter the light, so that part of the light is received by the receiver, thereby sounding an alarm;

[0034] The smoke inlet 15 of the smoke detector bottom cover 12 is provided with a coal transportation line smoking mechanism 2 arranged along the coal transportation route, which is used to separate the smoke, coal dust and water mist in the air above the coal transportation conveyor belt and guide them to the mine coal transportation smoke detector 11;

[0035] The coal transportation line smoking mechanism 2 comprises an extension tube 21 parallel to the coal transportation conveyor belt, and two rows of mutually symmetrical condensation guide plates 26 are fixedly arranged inside the extension tube 21. The sealed space formed by the two rows of condensation guide plates 26 and the extension tube 21 is a low temperature chamber 27, which is used to condense the water mist in the air above the coal transportation conveyor belt;

[0036] The air in the space above the conveyor belt is always kept in a negative pressure state inside the extension tube 21 under the suction force of the smoking fan 13, and the air above the conveyor belt is sucked into the extension tube 21, and the air flows into the water storage tube 31 along the condensation guide plate 26, so that the temperature in the low-temperature chamber 27 is lower than the external air temperature under the blowing of the air discharged by the smoking fan 13, and condensation is formed when the air contacts the condensation guide plate 26, thereby reducing the water mist that enters the coal transportation smoke detector 11 in the mine in order to suppress the flying of carbon dust, which is conducive to reducing the false alarm caused by the water mist in the coal transportation smoke detector 11 in the mine;

[0037] A smoke stratification mechanism 3 is provided below the two rows of condensation guide plates 26, which is used to guide smoke in the air on the coal transport conveyor belt into the bottom cover 12 of the smoke detector. The smoke stratification mechanism 3 includes a water storage cylinder 31, and a seesaw rotating column 35 is fixedly provided on the outer wall of the water storage cylinder 31;

[0038] The water droplets dripping from the condensation guide plate 26 will drip into the water storage cylinder 31, and then due to the working principle of the water storage cylinder 31 like a seesaw, the water will be collected in the section from the temporary storage chamber 32 to the seesaw rotating column 35, until the collected water passes over the seesaw rotating column 35 and reaches the section from the flushing chamber 33 to the seesaw rotating column 35, so that the weight of the section from the flushing chamber 33 to the seesaw rotating column 35 is greater than the section from the temporary storage chamber 32 to the seesaw rotating column 35, so that the collected condensed water will quickly impact the coal dust mesh 38 of the smoke inlet 15, and wash away the carbon dust adsorbed on the coal dust mesh 38, which is conducive to preventing the coal dust mesh 38 from being blocked and causing the delayed alarm of the mine coal transportation smoke detector 11.

[0039] A smoke outlet mesh plate 14 is fixedly provided at the air outlet end of the smoking fan 13, and two diversion pipes 24 are fixedly provided on the smoke outlet mesh plate 14. The two diversion pipes 24 are interconnected with the smoking fan 13 and are used to divert a part of the fast-flowing smoke blown out by the smoking fan 13. The two diversion pipes 24 both penetrate the outer wall of the mine coal transportation smoke detector 11. The air sucked in by the smoking fan 13 enters the smoke detection area through the smoke outlet mesh plate 14, and a small part of the air is blown into the two diversion pipes 24, and then flows into the corresponding low-temperature chamber 27 respectively from the two diversion pipes 24. The high-speed flowing air cools down the two rows of condensation guide plates 26.

[0040] The ends of the two shunt pipes 24 away from the mine coal transportation smoke detector 11 pass through the extension tube 21 and are interconnected with the low-temperature chamber 27. The air outlet end of the low-temperature chamber 27 away from the mine coal transportation smoke detector 11 is provided with a cooling outlet 23, which is used to discharge the smoke provided by the shunt pipe 24 and flows to the far end at the end of the low-temperature chamber 27 away from the mine coal transportation smoke detector 11. When the smoke exhaust fan 13 is working, the air above the conveyor belt is sucked into the extension tube 21. The sucked air first contacts the condensation guide plate 26. Because the temperature of the condensation guide plate 26 is lower than the temperature of the slowly flowing air, it plays a role of condensation. A large amount of water mist in the air forms condensed water droplets when it contacts the condensation guide plate 26.

[0041] A plurality of shaft wall fixing parts 25 are fixedly provided on the upper wall of the extension tube 21, and the plurality of shaft wall fixing parts 25 are used to fix the extension tube 21 on the mine machine wall above the coal transport conveyor belt, and adjust the horizontality of the extension tube 21 at the same time. When installing this equipment in a mine, first install the mine coal transport smoke detector 11 directly above the coal transport conveyor belt, and then fix the longer extension tube 21 on the shaft wall through the shaft wall fixing parts 25, so that the direction of the extension tube 21 is parallel to the coal transport conveyor belt.

[0042] Two identical and symmetrical smoke inlet guide covers 22 are fixedly provided on the lower wall of the extension tube 21. The smoke inlet guide covers 22 and the extension tube 21 form a three-quarter gourd shape. The length of the extension tube 21 wall at the connecting end of the extension tube 21 and the smoke inlet guide cover 22 gradually decreases from the end close to the mine coal transportation smoke detector 11 to the end away from it, and the contact distance between the extension tube 21 and the water storage cylinder 31 gradually increases from the end close to the mine coal transportation smoke detector 11 to the end away from it. When the air above the coal transportation conveyor belt is sucked, it first enters the two smoke inlet guide covers 22, and then flows along the smoke inlet guide covers 22 and the condensation guide plate 26 to the water storage cylinder 31. The water mist in the air condenses with the condensation guide plate 26. If there is smoke in the air, the smoke flows along the condensation guide plate 26 to the water storage cylinder 31, and then is sucked into the mine coal transportation smoke detector 11. There are water droplets on the condensation guide plate 26, which can also adsorb large particles of carbon dust in the air.

[0043] The outer walls of the two rows of condensation guide plates 26 are each provided with a plurality of guide drip grooves 28, and the center lines of the two rows of condensation guide plates 26 along the coal transportation route are aligned with the center line of the water storage cylinder 31. The water droplets condensed on the two rows of condensation guide plates 26 drip along the plurality of guide drip grooves 28 into the water storage cylinder 31 for temporary storage.

[0044] A temporary storage chamber 32 is provided at one end of the water storage cylinder 31 away from the mine coal transportation smoke detector 11, and a flushing chamber 33 is provided at one end of the water storage cylinder 31 close to the mine coal transportation smoke detector 11, and the distance from the temporary storage chamber 32 to the seesaw rotating column 35 is smaller than the distance from the flushing chamber 33 to the seesaw rotating column 35, and at the same time, the weight of the section from the temporary storage chamber 32 to the seesaw rotating column 35 is greater than the weight from the flushing chamber 33 to the seesaw rotating column 35. As time goes by, a large amount of condensed water droplets gather in the temporary storage chamber 32 until the gathered water It passes over the seesaw rotating column 35 and reaches the section from the flushing chamber 33 to the seesaw rotating column 35, so that the weight of the section from the flushing chamber 33 to the seesaw rotating column 35 is greater than that of the section from the temporary storage chamber 32 to the seesaw rotating column 35. At this time, the water storage cylinder 31 rotates with the seesaw rotating column 35 as the center until the end of the flushing chamber 33 is lower than the temporary storage chamber 32. At this time, a large amount of water impacts the coal dust mesh 38, and washes away the carbon dust adsorbed on the coal dust mesh 38, which helps to prevent the coal dust mesh 38 from being blocked and causing the delayed alarm of the mine coal transportation smoke detector 11.

[0045] A counterweight column 36 is fixedly arranged above the temporary storage chamber 32, and a limit cable 37 is fixedly arranged at the center position of the counterweight column 36. The end of the limit cable 37 away from the counterweight column 36 is fixedly connected to the inner wall of the extension tube 21, and the height of one end of the temporary storage chamber 32 is lower than the other end of the flushing chamber 33. At the same time, the limit cable 37 is in a stretched state, and the initial state of the temporary storage chamber 32 is lower than the flushing chamber 33. If there is smoke, the characteristics of the smoke are to flow upwards, which does not affect the rapid entry of the smoke into the bottom cover 12 of the smoke detector, thereby playing a role of timely alarm.

[0046] A soft rubber channel 34 is fixedly provided at one end of the flushing chamber 33 near the smoke detector bottom cover 12, and one end of the soft rubber channel 34 near the smoke detector bottom cover 12 is fixed and sealed to the outer wall of the smoke detector bottom cover 12, and at the same time, the flushing chamber 33 is interconnected with the smoke inlet 15 through the soft rubber channel 34, and a coal dust screen 38 is fixedly provided in the smoke inlet 15, and the upper and lower ends of the coal dust screen 38 are provided with a shaking net shrapnel 301 fixedly connected to the smoke inlet 15, and the shaking net shrapnel 301 is an arc-shaped structure, and the shaking net shrapnel A pull wire 39 is fixedly set on 301, and one end of the pull wire 39 away from the shaking net shrapnel 301 is fixedly connected to the flushing chamber 33. When the water storage cylinder 31 rotates with the seesaw rotating column 35 as the center until the end of the flushing chamber 33 is lower than the temporary storage chamber 32, the pull wire 39 is loosened to relax the taut pull wire 39 and make the shaking net shrapnel 301 rebound in the opposite direction, thereby driving the coal dust mesh 38 to vibrate rapidly, thereby shaking off the dust adsorbed on the coal dust mesh 38 and discharging it with the water.

[0047] A drain port 16 is provided on the bottom wall of the smoke detector bottom cover 12, and a baffle door 17 rotatably connected to the smoke detector bottom cover 12 is provided below the drain port 16. The baffle door 17 is rotatably connected to the smoke detector bottom cover 12 through a torsion spring. At the same time, the size of the baffle door 17 is larger than the size of the drain port 16. Water used to flush the coal dust screen 38 flows into the smoke detector bottom cover 12, and the baffle door 17 is opened under the water gravity to discharge the water, and then closed to prevent air from directly entering the equipment.

[0048] The above describes an embodiment of the present embodiment, but the present embodiment is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present embodiment, ordinary technicians in this field can also make many forms, all of which are within the protection of the present embodiment.

Claims

1. A fire monitoring and alarm device for a coal transportation system in a mine. include: A mine coal transportation smoke detector (11), wherein a smoke detector bottom cover (12) is fixedly arranged at the bottom of the mine coal transportation smoke detector (11), smoke inlets (15) are opened on both sides of the smoke detector bottom cover (12), and a smoke exhaust fan (13) is fixedly installed inside the smoke detector bottom cover (12), characterized in that a coal transportation line smoking mechanism (2) arranged along the coal transportation route is arranged on the smoke inlet (15) of the smoke detector bottom cover (12), which is used to separate smoke, coal dust and water mist in the air above the coal transportation conveyor belt and guide them into the mine coal transportation smoke detector (11); The coal transportation line smoking mechanism (2) comprises an extension tube (21) parallel to the coal transportation conveyor belt, two rows of mutually symmetrical condensation guide plates (26) are fixedly arranged inside the extension tube (21), and the sealed space formed by the two rows of condensation guide plates (26) and the extension tube (21) is a low-temperature chamber (27) for condensing water mist in the air above the coal transportation conveyor belt; A smoke stratification mechanism (3) is provided below the two rows of condensation guide plates (26) for guiding smoke in the air on the coal transport conveyor belt into the smoke detector bottom cover (12). The smoke stratification mechanism (3) comprises a water storage cylinder (31), and a seesaw rotating column (35) is fixedly provided on the outer wall of the water storage cylinder (31).

2. A fire monitoring and alarm device for a coal transportation system in a mine according to claim 1, characterized in that: A smoke outlet mesh plate (14) is fixedly provided at the air outlet end of the smoking fan (13), and two diversion pipes (24) are fixedly provided on the smoke outlet mesh plate (14). The two diversion pipes (24) are interconnected with the smoking fan (13) and are used to divert a part of the fast-flowing smoke blown out by the smoking fan (13), and the two diversion pipes (24) are both passed through the outer wall of the coal transportation smoke detector (11) of the mine.

3. A fire monitoring and alarm device for a coal transportation system in a mine according to claim 2, characterized in that: The ends of the two shunt pipes (24) away from the mine coal transportation smoke detector (11) pass through the extension tube (21) and are interconnected with the low-temperature chamber (27). The air outlet end of the low-temperature chamber (27) away from the mine coal transportation smoke detector (11) is provided with a cooling outlet (23) for discharging the smoke provided by the shunt pipe (24) to flow to the far end at the end of the low-temperature chamber (27) away from the mine coal transportation smoke detector (11).

4. A fire monitoring and alarm device for a coal transportation system in a mine according to claim 1, characterized in that: A plurality of shaft wall fixing members (25) are fixedly arranged on the upper wall of the extension tube (21), and the plurality of shaft wall fixing members (25) are used to fix the extension tube (21) on the wall of the mining machine above the coal transport conveyor belt and adjust the horizontality of the extension tube (21) at the same time.

5. A fire monitoring and alarm device for a coal transportation system in a mine according to claim 1, characterized in that: The lower wall of the extension tube (21) is fixedly provided with two identical and mutually symmetrical smoke inlet guide covers (22), the smoke inlet guide covers (22) and the extension tube (21) forming a three-quarter gourd shape, the wall length of the extension tube (21) at the connection end between the extension tube (21) and the smoke inlet guide covers (22) gradually decreases from an end close to the mine coal transport smoke detector (11) to an end away from the extension tube (21), and the contact distance between the extension tube (21) and the water storage cylinder (31) gradually increases from an end close to the mine coal transport smoke detector (11) to an end away from the extension tube (21).

6. A fire monitoring and alarm device for a coal transportation system in a mine according to claim 1, characterized in that: The outer walls of the two rows of condensation guide plates (26) are each provided with a plurality of guide drip grooves (28), and the center lines of the two rows of condensation guide plates (26) along the coal transportation route are aligned with the center line of the water storage cylinder (31).

7. A fire monitoring and alarm device for a coal transportation system in a mine according to claim 1, characterized in that: A temporary storage chamber (32) is arranged at one end of the water storage cylinder (31) away from the mine coal transportation smoke detector (11), and a flushing chamber (33) is arranged at one end of the water storage cylinder (31) close to the mine coal transportation smoke detector (11). The distance from the temporary storage chamber (32) to the seesaw rotating column (35) is smaller than the distance from the flushing chamber (33) to the seesaw rotating column (35), and the weight of the section from the temporary storage chamber (32) to the seesaw rotating column (35) is greater than the weight from the flushing chamber (33) to the seesaw rotating column (35).

8. A fire monitoring and alarm device for a coal transportation system in a mine according to claim 7, characterized in that: A counterweight column (36) is fixedly arranged above the temporary storage chamber (32), and a limit cable (37) is fixedly arranged at the center position of the counterweight column (36). One end of the limit cable (37) away from the counterweight column (36) is fixedly connected to the inner wall of the extension tube (21), and the height of one end of the temporary storage chamber (32) is lower than that of the other end of the flushing chamber (33), and the limit cable (37) is in a stretched state.

9. A fire monitoring and alarm device for a coal transportation system in a mine according to claim 8, characterized in that: A soft rubber channel (34) is fixedly provided at one end of the flushing chamber (33) close to the bottom cover (12) of the smoke detector. The end of the soft rubber channel (34) close to the bottom cover (12) of the smoke detector is fixedly and sealedly connected to the outer wall of the bottom cover (12) of the smoke detector. At the same time, the flushing chamber (33) is communicated with the smoke inlet (15) through the soft rubber channel (34). A coal dust screen (38) is fixedly provided in the smoke inlet (15). The upper and lower ends of the coal dust screen (38) are provided with shaking net shrapnel (301) fixedly connected to the smoke inlet (15). The shaking net shrapnel (301) is an arc-shaped structure. A pull wire (39) is fixedly provided on the shaking net shrapnel (301), and the end of the pull wire (39) away from the shaking net shrapnel (301) is fixedly connected to the flushing chamber (33).

10. A fire monitoring and alarm device for a coal transportation system in a mine according to claim 1, characterized in that: The bottom wall of the smoke detector bottom cover (12) is provided with a drainage port (16), and a blocking door (17) rotatably connected to the smoke detector bottom cover (12) is provided below the drainage port (16). The blocking door (17) is rotatably connected to the smoke detector bottom cover (12) via a torsion spring, and the size of the blocking door (17) is larger than the size of the drainage port (16).

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