A mine belt conveyor fire early warning monitoring system
By installing smoke sensors and PLC controllers combined with water spray pipes on mining belt conveyors, an automatic early warning and fire extinguishing system is achieved, solving the problem of early warning and fire extinguishing of belt conveyor fires in underground coal mines and reducing fire losses and safety hazards.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-11
- Publication Date
- 2026-05-29
AI Technical Summary
Fires frequently occur on belt conveyors in coal mines, and existing technologies are insufficient for effective early warning and automatic fire extinguishing, resulting in serious safety hazards.
The system uses a smoke sensor and a PLC controller combined with a sprinkler system. After the smoke sensor detects a fire, it controls the drive motor to stop and starts the sprinkler system to extinguish the fire, thus achieving automatic early warning and fire suppression.
It effectively reduces the probability of fire spread, achieves automatic fire extinguishing, reduces losses, improves the applicability of the installation mechanism, and maintains the sensitivity of the smoke sensor through the cleaning mechanism.
Smart Images
Figure CN224298126U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of protection for mining belt conveyors, and in particular to a fire early warning and monitoring system for mining belt conveyors. Background Technology
[0002] Belt conveyor fires are a frequent occurrence in coal mine accidents. Currently, belt conveyors are still the primary mode of transportation in underground coal mines, open-pit mines, non-coal mines, and coal washing plants in my country. Especially in underground coal mines, belt conveyor fires remain one of the main external causes of fires affecting coal mine safety, posing a significant threat to the safety of coal enterprises. Utility Model Content
[0003] In order to minimize the losses caused by belt fires, this application provides a fire early warning and monitoring system for mining belt conveyors.
[0004] This application provides a fire early warning and monitoring system for a mining belt conveyor, which adopts the following technical solution:
[0005] A fire early warning and monitoring system for a mining belt conveyor includes a smoke sensor, which is mounted on the belt conveyor via a mounting mechanism. A PLC controller is also mounted on the mounting mechanism, and the PLC controller is signal-connected to the drive motor of the belt conveyor and the smoke sensor. A water spray pipe is also mounted on the mounting mechanism, and the PLC controller is signal-connected to a water pump at the end of the water spray pipe.
[0006] By adopting the above technical solution, since the main component of the belt on the conveyor belt is rubber, a large amount of smoke will be generated when a fire occurs. When the smoke is generated, the smoke sensor generates an electrical signal and transmits it to the PLC controller. At this time, the PLC controller controls the drive motor of the conveyor belt to stop, reducing the probability of fire spread. At the same time, it controls the water pump at the end of the sprinkler pipe to start, so that the sprinkler pipe sprays water to extinguish the fire, thereby reducing the losses caused by the belt fire, reducing the spread of the fire and realizing automatic fire extinguishing.
[0007] Optionally, the mounting mechanism includes a first mounting plate and a second mounting plate. Both the first mounting plate and the second mounting plate are mounted on the belt conveyor via a fixing component. A sleeve plate is slidably connected to both the first mounting plate and the second mounting plate. The sleeve plate is fixed by an adjusting component. The sleeve plate is connected to the PLC controller and the smoke sensor. A connecting component for fixing the water spray pipe is also installed on the sleeve plate.
[0008] By adopting the above technical solution, the installation mechanism enables the installation of the smoke sensor, PLC controller, and water spray pipe.
[0009] Optionally, the fixing assembly includes two connecting plates, which are respectively fixedly connected to the first mounting plate and the second mounting plate. Each connecting plate has a sliding groove on its side wall at both ends. A sliding rod is slidably connected in the sliding groove. A spring is fixedly connected to the bottom wall of the sliding groove. The other end of the spring is fixedly connected to the sliding rod. A clamping plate is fixedly connected to the end of the sliding rod away from the spring.
[0010] By adopting the above technical solution, when installing the first mounting plate and the second mounting plate, the clamping plate is first pulled manually, then the clamping plate is placed on both sides of the belt conveyor support frame, and then the clamping plate is released. At this time, the spring clamps the clamping plate on the belt conveyor support frame through the sliding rod; thus improving the applicability of the installation mechanism, so that smoke sensors can be installed on different belt conveyors.
[0011] Optionally, the first mounting plate and the second mounting plate each have a first through hole on their sidewalls, and the sleeve plate has a plurality of second through holes on its sidewalls. The adjusting assembly includes two first fixing bolts, which pass through two connected second through holes and the first through holes respectively and are threaded with first fixing nuts.
[0012] By adopting the above technical solution, the sliding of the sleeve plate realizes the adjustment of the distance between the first mounting plate and the second mounting plate, thereby enabling the mounting mechanism to be applicable to belt conveyors of different widths. At the same time, the setting of the first fixing bolt and the first fixing nut realizes the fixing of the sleeve.
[0013] Optionally, the connecting assembly includes a first arc-shaped connecting block, which is fixedly connected to the sleeve plate. The connecting assembly also includes a second arc-shaped connecting block. The end faces of the second arc-shaped connecting block and the first arc-shaped connecting block that are close to each other are provided with third through holes. A second fixing bolt is rotatably connected to the two interconnected third through holes. A second fixing nut is threaded to one end of the second fixing bolt that passes through the two third through holes.
[0014] By adopting the above technical solution, the first arc-shaped connecting block, the second arc-shaped connecting block, the second fixing bolt, and the second fixing nut are used to fix the water spray pipe.
[0015] Optionally, a cleaning mechanism is also installed on the sleeve plate, the cleaning mechanism including a cleaning brush and a drive assembly, the cleaning brush being slidably connected to the sleeve plate via the drive assembly.
[0016] By adopting the above technical solution, since the belt conveyor generates a large amount of coal dust during the coal transportation process, the smoke receiving end of the smoke sensor is easily blocked by coal dust, which affects its sensitivity. The cleaning brush is set up to clean the smoke receiving end of the smoke sensor, thereby reducing the impact of coal dust on the sensitivity of the smoke sensor.
[0017] Optionally, the drive assembly includes a pneumatic push rod, which is fixedly connected to the sleeve plate. A U-shaped connecting rod is slidably connected to the sleeve plate and is fixedly connected to the cleaning brush. A slider is fixedly connected to the U-shaped connecting rod and is fixedly connected to the pneumatic push rod.
[0018] By adopting the above technical solution, when cleaning the smoke receiving end of the smoke sensor, the pneumatic push rod drives the U-shaped connecting rod to slide through the slider, and the U-shaped connecting rod drives the cleaning brush to clean the smoke receiving end of the smoke sensor.
[0019] In summary, this application includes the following beneficial technical effects:
[0020] 1. Since the main component of the belt on the conveyor belt is rubber, a large amount of smoke will be generated when a fire occurs. When smoke is generated, the smoke sensor generates an electrical signal and transmits it to the PLC controller. At this time, the PLC controller controls the drive motor of the conveyor belt to stop, reducing the probability of fire spread. At the same time, it controls the water pump at the end of the sprinkler pipe to start, so that the sprinkler pipe sprays water to extinguish the fire, thereby reducing the losses caused by the belt fire, reducing the spread of the fire and realizing automatic fire extinguishing.
[0021] 2. When installing the first and second mounting plates, first manually pull the clamping plate, then place the clamping plate on both sides of the belt conveyor support frame, and then release the clamping plate. At this time, the spring clamps the clamping plate onto the belt conveyor support frame through the sliding rod; this improves the applicability of the installation mechanism, allowing smoke sensors to be installed on different belt conveyors.
[0022] 3. The sliding of the sleeve plate enables the adjustment of the distance between the first mounting plate and the second mounting plate, thereby allowing the mounting mechanism to be used with belt conveyors of different widths. At the same time, the setting of the first fixing bolt and the first fixing nut enables the sleeve to be fixed.
[0023] 4. Since the belt conveyor generates a large amount of coal dust during coal transportation, the smoke receiving end of the smoke sensor is easily blocked by coal dust, which affects its sensitivity. The cleaning brush is set up to clean the smoke receiving end of the smoke sensor, thereby reducing the impact of coal dust on the sensitivity of the smoke sensor. Attached Figure Description
[0024] Figure 1This is a schematic diagram of the structure of the fire early warning and monitoring system for mining belt conveyors in this embodiment of the application;
[0025] Figure 2 This is an exploded view of the installation mechanism in the embodiments of this application;
[0026] Figure 3 This is a schematic diagram of the structure of the adjustment component in an embodiment of this application;
[0027] Figure 4 For this application Figure 3 Enlarged view of section A;
[0028] Figure 5 This is a schematic diagram of the cleaning mechanism in an embodiment of this application.
[0029] Reference numerals: 1. Belt conveyor; 2. Smoke sensor; 3. PLC controller; 4. Water spray pipe; 5. Mounting mechanism; 51. Fixing component; 511. Connecting plate; 512. Sliding rod; 513. Spring; 514. Clamping plate; 52. First mounting plate; 53. Second mounting plate; 54. Sleeve plate; 541. Second through hole; 55. Adjusting component; 551. First fixing bolt; 552. First fixing nut; 56. Connecting component; 561. First arc-shaped connecting block; 562. Second arc-shaped connecting block; 563. Second fixing bolt; 564. Second fixing nut; 6. Cleaning mechanism; 61. Cleaning brush; 62. Drive component; 621. Pneumatic push rod; 622. U-shaped connecting rod; 623. Slider. Detailed Implementation
[0030] The following is in conjunction with the appendix Figures 1-5 This application will be described in further detail.
[0031] This application discloses a fire early warning and monitoring system for mining belt conveyors.
[0032] refer to Figure 1 The fire early warning and monitoring system for mining belt conveyors includes a smoke sensor 2, which is mounted on the belt conveyor 1 via a mounting mechanism 5. A PLC controller 3 is also mounted on the mounting mechanism 5, and the PLC controller 3 is connected to the drive motor of the belt conveyor 1 and the smoke sensor 2 via signal connection. A water spray pipe 4 is also mounted on the mounting mechanism 5, and the PLC controller 3 is connected to the water pump at the end of the water spray pipe 4 via signal connection. A cleaning mechanism 6 for cleaning the smoke receiving end of the smoke sensor 2 is also mounted on the mounting mechanism 5.
[0033] Since the main component of the belt on conveyor belt 1 is rubber, a large amount of smoke will be generated when a fire occurs. When smoke is generated, the smoke sensor 2 generates an electrical signal that is transmitted to the PLC controller 3. At this time, the PLC controller 3 controls the drive motor of conveyor belt 1 to stop, reducing the probability of fire spread. At the same time, it controls the water pump at the end of the water spray pipe 4 to start, so that the water spray pipe 4 sprays water to extinguish the fire, thereby reducing the losses caused by the belt fire, reducing the spread of the fire and realizing automatic fire extinguishing.
[0034] refer to Figure 2 and Figure 3 The installation mechanism 5 includes a fixing component 51, which includes two connecting plates 511. The two connecting plates 511 abut against the support frames on both sides of the belt conveyor 1. Sliding grooves are provided on the side walls at both ends of the connecting plates 511. Sliding rods 512 are slidably connected in the sliding grooves. A spring 513 is fixedly connected to the bottom wall of the sliding groove. The other end of the spring 513 is fixedly connected to the sliding rod 512. A clamping plate 514 is fixedly connected to the end of the sliding rod 512 away from the spring 513.
[0035] A first mounting plate 52 and a second mounting plate 53 are fixedly connected to the opposite ends of the two connecting plates 511. A sleeve plate 54 is slidably connected to the ends of the first mounting plate 52 and the second mounting plate 53 that are away from the belt conveyor 1. The end of the sleeve plate 54 that is close to the belt conveyor 1 is connected to the smoke sensor 2, and the end of the sleeve plate 54 that is away from the belt conveyor 1 is connected to the PLC controller 3. A first through hole is provided on the side wall of the first mounting plate 52 and the second mounting plate 53. A plurality of second through holes 541 are provided on the side wall of the sleeve plate 54. The mounting mechanism 5 also includes an adjustment component 55. The adjustment component 55 includes two first fixing bolts 551. The two first fixing bolts 551 pass through the two connected second through holes 541 and the first through holes respectively, and are threaded with a first fixing nut 552.
[0036] The mounting mechanism 5 enables the installation of the smoke sensor 2 and the PLC controller 3. When installing the first mounting plate 52 and the second mounting plate 53, the clamping plate 514 is pulled manually first, and then the clamping plate 514 is placed on both sides of the support frame of the belt conveyor 1. Then the clamping plate 514 is released. At this time, the spring 513 clamps the clamping plate 514 on the support frame of the belt conveyor 1 through the sliding rod 512. This improves the applicability of the mounting mechanism 5, allowing the smoke sensor 2 to be installed on different belt conveyors 1. Furthermore, the sliding of the sleeve 54 enables the adjustment of the distance between the first mounting plate 52 and the second mounting plate 53, thus enabling the mounting mechanism 5 to be applicable to belt conveyors 1 with different widths. At the same time, the first fixing bolt 551 and the first fixing nut 552 enable the fixing of the sleeve.
[0037] refer to Figure 4The installation mechanism 5 also includes a connecting component 56, which includes a first arc-shaped connecting block 561. The first arc-shaped connecting block 561 is fixedly connected to the end face of the sleeve plate 54 near the belt conveyor 1. The connecting component 56 also includes a second arc-shaped connecting block 562. The end faces of the second arc-shaped connecting block 562 and the first arc-shaped connecting block 561 that are close to each other are provided with third through holes. A second fixing bolt 563 is rotatably connected in the two interconnected third through holes. A second fixing nut 564 is threaded to one end of the second fixing bolt 563 that passes through the two third through holes. The arrangement of the first arc-shaped connecting block 561, the second arc-shaped connecting block 562, the second fixing bolt 563 and the second fixing nut 564 realizes the fixation of the water spray pipe 4.
[0038] refer to Figure 5 The cleaning mechanism 6 includes a cleaning brush 61 and a drive assembly 62. The cleaning brush 61 is slidably connected to the sleeve plate 54 via the drive assembly 62. The drive assembly 62 includes a pneumatic push rod 621, which is fixedly connected to the end face of the sleeve plate 54 away from the belt conveyor 1. A U-shaped connecting rod 622 is slidably connected to the sleeve plate 54 and is fixedly connected to the cleaning brush 61. A slider 623 is fixedly connected to the end face of the U-shaped connecting rod 622 away from the belt conveyor 1 and is fixedly connected to the pneumatic push rod 621.
[0039] Because the conveyor belt 1 generates a large amount of coal dust during coal transportation, the smoke receiving end of the smoke sensor 2 is easily clogged by coal dust, which affects its sensitivity. The cleaning brush 61 is designed to clean the smoke receiving end of the smoke sensor 2, thereby reducing the impact of coal dust on the sensitivity of the smoke sensor 2. When cleaning the smoke receiving end of the smoke sensor 2, the pneumatic push rod 621 drives the U-shaped connecting rod 622 to slide through the slider 623. The U-shaped connecting rod 622 drives the cleaning brush 61 to clean the smoke receiving end of the smoke sensor 2.
[0040] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A fire early warning and monitoring system for a mining belt conveyor, characterized in that, The device includes a smoke sensor (2), which is mounted on the belt conveyor (1) via a mounting mechanism (5). A PLC controller (3) is also mounted on the mounting mechanism (5). The PLC controller (3) is connected to the drive motor of the belt conveyor (1) and the smoke sensor (2). A water spray pipe (4) is also mounted on the mounting mechanism (5). The PLC controller (3) is connected to the water pump at the end of the water spray pipe (4).
2. The fire early warning and monitoring system for mining belt conveyors according to claim 1, characterized in that, The installation mechanism (5) includes a first mounting plate (52) and a second mounting plate (53). The first mounting plate (52) and the second mounting plate (53) are both mounted on the belt conveyor (1) by a fixing component (51). A sleeve plate (54) is slidably connected on the first mounting plate (52) and the second mounting plate (53). The sleeve plate (54) is fixed by an adjusting component (55). The sleeve plate (54) is connected to the PLC controller (3) and the smoke sensor (2). A connecting component (56) for fixing the water spray pipe (4) is also installed on the sleeve plate (54).
3. The fire early warning and monitoring system for mining belt conveyors according to claim 2, characterized in that, The fixing component (51) includes two connecting plates (511), which are fixedly connected to the first mounting plate (52) and the second mounting plate (53) respectively. Sliding grooves are provided on the side walls at both ends of the connecting plates (511), and sliding rods (512) are slidably connected in the sliding grooves. A spring (513) is fixedly connected to the bottom wall of the sliding grooves. The other end of the spring (513) is fixedly connected to the sliding rod (512), and a clamping plate (514) is fixedly connected to the end of the sliding rod (512) away from the spring (513).
4. The fire early warning and monitoring system for mining belt conveyors according to claim 2, characterized in that, The first mounting plate (52) and the second mounting plate (53) are provided with first through holes on their side walls, and the sleeve plate (54) is provided with multiple second through holes (541) on its side wall. The adjustment assembly (55) includes two first fixing bolts (551). The two first fixing bolts (551) pass through the two connected second through holes (541) and the first through holes respectively, and are threaded with first fixing nuts (552).
5. The fire early warning and monitoring system for mining belt conveyors according to claim 2, characterized in that, The connecting component (56) includes a first arc-shaped connecting block (561), which is fixedly connected to the sleeve plate (54). The connecting component (56) also includes a second arc-shaped connecting block (562). The second arc-shaped connecting block (562) and the first arc-shaped connecting block (561) are provided with third through holes on their respective end faces that are close to each other. A second fixing bolt (563) is rotatably connected to the two interconnected third through holes. A second fixing nut (564) is threaded to one end of the second fixing bolt (563) that passes through the two third through holes.
6. The fire early warning and monitoring system for mining belt conveyors according to claim 2, characterized in that, The sleeve (54) is also equipped with a cleaning mechanism (6), which includes a cleaning brush (61) and a drive assembly (62). The cleaning brush (61) is slidably connected to the sleeve (54) through the drive assembly (62).
7. The fire early warning and monitoring system for mining belt conveyors according to claim 6, characterized in that, The drive assembly (62) includes a pneumatic push rod (621) which is fixedly connected to the sleeve plate (54). A U-shaped connecting rod (622) is slidably connected to the sleeve plate (54). The U-shaped connecting rod (622) is fixedly connected to the cleaning brush (61). A slider (623) is fixedly connected to the U-shaped connecting rod (622). The slider (623) is fixedly connected to the pneumatic push rod (621).