Automatic fire extinguishing device for mining belt conveyor

Abstract

The utility model relates to the technical field of fire fighting equipment, and discloses an automatic fire extinguishing device for a mining belt conveyor, which comprises mining belt equipment consisting of a driving motor and a conveying belt, and an automatic fire extinguishing component is arranged above the mining belt equipment. The assembly comprises a PLC control host, is connected with a flame sensor and a thermal infrared imager, and is connected with a driving motor through a linkage feedback signal line. A water-based medicament bottle is arranged above the equipment, a dry powder medicament bottle is arranged on the side part, and release components are arranged. The fire extinguishing device can be independently controlled according to specific protection requirements of different protection areas of belt conveyor equipment. According to the device, two detectors are applied, and the thermal infrared imager and the flame detector are in AND logic association, that is, the fire extinguishing device can be started only when the thermal infrared imager and the flame detector need to detect fire signals at the same time. According to the design, the false triggering risk of the fire extinguishing device is effectively avoided, and unnecessary resource waste and cost increase are avoided. And meanwhile, flexible selection of fire extinguishing agents is supported, protection equipment is protected against damage, and the maintenance cost of the equipment is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of fire-fighting equipment, in particular to an automatic fire extinguishing device for mine belt conveyors. Background Technique

[0002] At present, the mine environment is complex, and the belt system is generally relied on for mineral transportation in mining operations. However, in this process, belt conveyors are often at risk of local high temperature and aging and short-circuit of circuits due to natural factors such as vibration and friction, which are extremely likely to induce fire accidents. More seriously, a large amount of dust particles and explosive gases pervade deep in the mine. Catalyzed by factors such as static electricity, high-temperature friction, and short circuit generated during the long-term operation of the belt conveyor, these potential hazard sources are extremely likely to form mixed explosives, thereby triggering catastrophic explosions and fires, seriously threatening the lives and property safety of mining personnel.

[0003] Regrettably, the current detection means such as monitoring cameras and smoke detectors commonly used in mining areas have relatively single detection methods, not only poor stability but also limited reaction sensitivity, and it is difficult to meet the standard of intelligent monitoring. In an environment with thick smoke and dust, the smoke detector is more likely to trigger the fire extinguishing device due to misjudgment, resulting in unnecessary waste of resources and potential damage. In addition, the selection of fire extinguishing agents is also quite limited. Simply relying on water for fire extinguishing can control the fire to a certain extent, but it often causes irreversible damage to the belt conveyor equipment, such as rust of metal parts and damage to electrical equipment, undoubtedly increasing the maintenance cost and safety risk of mining area equipment.

[0004] Therefore, based on the above technical problems, it is necessary for those skilled in the art to develop an automatic fire extinguishing device for mine belt conveyors. Content of the Utility Model

[0005] The purpose of the utility model is to provide an automatic fire extinguishing device for mine belt conveyors to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] Technical solution of an automatic fire extinguishing device for a mine belt conveyor, including a mine belt equipment, the mine belt equipment is composed of a driving motor and a conveyor belt, an automatic fire extinguishing component is arranged above the mine belt equipment, the automatic fire extinguishing component is composed of a PLC control host, a motor fire detection mechanism and a belt conveyor fire detection mechanism, the PLC control host is connected with the motor fire detection mechanism and the belt conveyor fire detection mechanism, the belt conveyor fire detection mechanism includes a flame sensor and an infrared thermal imager, the flame sensor and the infrared thermal imager are located above the mine belt equipment, the motor fire detection mechanism includes a cable-type temperature sensor cable, the cable-type temperature sensor cable is installed on the driving motor, the PLC control host is connected with the driving motor through a linkage feedback signal line, a water-based agent bottle is arranged above the mine belt equipment, a dry powder agent bottle is arranged on the side of the mine belt equipment, and release components are installed on both the water-based agent bottle and the dry powder agent bottle.

[0008] As a preferred technical solution, the cable-type temperature sensor cable is wound outside the driving motor, and the cable-type temperature sensor cable is arranged in an "S" shape for contact temperature detection.

[0009] As a preferred technical solution, the output ends of the water-based agent bottle and the dry powder agent bottle are respectively connected with a water-based agent main pipe and a dry powder agent main pipe, the release components both include electric ball valves, the electric ball valves are connected with the PLC control host, the two electric ball valves are respectively communicated with the water-based agent main pipe and the dry powder agent main pipe, pressure sensors are installed on both the water-based agent bottle and the dry powder agent bottle, the pressure sensors are connected with the PLC control host, and emergency manual valves are installed on both the water-based agent main pipe and the dry powder agent main pipe.

[0010] As a preferred technical solution, the ends of the water-based agent main pipe and the dry powder agent main pipe are both connected with a spray head pipeline, and multiple groups of agent spray heads are installed on the spray head pipeline.

[0011] As a preferred technical solution, the PLC control host is also connected with an audible and visual warning light, a manual starter and a reset switch.

[0012] Compared with the prior art, the beneficial effects of the present utility model are:

[0013] The utility model relates to an automatic fire extinguishing device for a mine belt conveyor, which can realize an independent control fire extinguishing device according to the specific protection requirements of different protection areas of the belt conveyor equipment. The device uses two detectors, ensuring a significant improvement in the stability, reliability and response speed of the system. An "AND" logic connection is adopted between the infrared thermal imager and the flame detector, that is, both must detect the fire signal at the same time for the fire extinguishing device to be activated. This design effectively avoids the risk of mis-triggering of the fire extinguishing device, avoiding unnecessary waste of resources and cost increase. At the same time, the system supports the flexible selection of fire extinguishing agents to maximize the protection of the protected equipment from damage, thereby reducing the maintenance cost of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of an automatic fire extinguishing device for a mine belt conveyor;

[0015] Figure 2 It is a schematic diagram of the partial structure of an automatic fire extinguishing device for a mine belt conveyor;

[0016] Figure 3 It is a schematic diagram of the working process structure of an automatic fire extinguishing device for a mine belt conveyor.

[0017] In the reference numerals of the drawings: 1, PLC control host; 2, flame sensor; 3, infrared thermal imager; 4, cable type temperature sensing cable; 5, linkage feedback signal line; 6, water-based agent main pipe; 7, nozzle pipeline; 8, agent nozzle; 9, electric ball valve; 10, pressure sensor; 11, emergency manual valve; 12, dry powder agent main pipe; 13, dry powder agent bottle; 14, conveyor belt; 15, drive motor; 16, water-based agent bottle; 17, sound and light warning light; 18, manual starter; 19, reset switch. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The features and exemplary embodiments of various aspects of the present utility model will be described in detail below. In order to make the purpose, technical solutions and advantages of the present utility model clearer, the following further describes the present utility model in detail with reference to the accompanying drawings and specific embodiments. For those skilled in the art, the present utility model can be implemented without some of these specific details. The following description of the embodiments is only to provide a better understanding of the present utility model by showing examples of the present utility model.

[0019] Such as Figure 1 、 Figure 2 and Figure 3As shown in the figure, the utility model provides a technical solution for an automatic fire extinguishing device for a mine belt conveyor: including a mine belt device, which is composed of a driving motor 15 and a conveyor belt 14. An automatic fire extinguishing component is arranged above the mine belt device. The automatic fire extinguishing component is composed of a PLC control host 1, a motor fire detection mechanism and a belt conveyor fire detection mechanism. The PLC control host 1 is connected to the motor fire detection mechanism and the belt conveyor fire detection mechanism. The belt conveyor fire detection mechanism includes a flame sensor 2 and an infrared thermal imager 3. The flame sensor 2 and the infrared thermal imager 3 are located above the mine belt device. The motor fire detection mechanism includes a cable-type temperature sensing cable 4, and the cable-type temperature sensing cable 4 is installed on the driving motor 15. The PLC control host 1 is connected to the driving motor 15 through a linkage feedback signal line 5. The PLC control host 1 is also connected to an audible and visual warning light 17, a manual starter 18 and a reset switch 19. The cable-type temperature sensing cable 4 is wound outside the driving motor 15, and the cable-type temperature sensing cable 4 is arranged in an "S" shape for contact temperature detection, mainly detecting fires caused by motor failures or high temperatures. A water-based agent bottle 16 is arranged above the mine belt device, and a dry powder agent bottle 13 is arranged on the side of the mine belt device. Release components are installed on both the water-based agent bottle 16 and the dry powder agent bottle 13;

[0020] The output ends of the water-based agent bottle 16 and the dry powder agent bottle 13 are respectively connected to a water-based agent main pipe 6 and a dry powder agent main pipe 12. The release components both include electric ball valves 9, and the electric ball valves 9 are connected to the PLC control host 1. The two electric ball valves 9 are respectively communicated with the water-based agent main pipe 6 and the dry powder agent main pipe 12. Pressure sensors 10 are installed on both the water-based agent bottle 16 and the dry powder agent bottle 13, and the pressure sensors 10 are connected to the PLC control host 1. Emergency manual valves 11 are installed on both the water-based agent main pipe 6 and the dry powder agent main pipe 12;

[0021] The tails of the water-based agent main pipe 6 and the dry powder agent main pipe 12 are both connected to a spray head pipeline 7, and multiple groups of agent spray heads 8 are installed on the spray head pipeline 7.

[0022] Working principle: When the mine belt conveyor is in a working state, this automatic fire extinguishing device comprehensively monitors each potential fire source point of the equipment. The PLC control host 1, as the core of the entire system, continuously receives and processes real-time data from the flame sensor 2, the infrared thermal imager 3, and the cable-type temperature sensing cable 4.

[0023] The flame sensor 2 mainly detects open flames around the equipment. Once a flame signal is detected, it will immediately feedback the information to the PLC control host 1. At the same time, the infrared thermal imager 3 detects temperature anomalies on the surface of the equipment in a non-contact manner to ensure the comprehensiveness and accuracy of fire detection. It should be noted that this device uses an "AND" logic association, that is, only when both the flame sensor 2 and the infrared thermal imager 3 detect a fire signal at the same time, will the PLC control host 1 determine it as a real fire, thus avoiding false triggering.

[0024] After confirming the fire, the PLC control host 1 will immediately start the preset fire extinguishing program. First, it sends a stop signal to the drive motor 15 through the linkage feedback signal wire 5 to ensure that the belt conveyor stops running during the fire extinguishing process and prevent the spread of fire. Subsequently, the PLC control host 1 controls the corresponding electric ball valve 9 to open and selects to release water-based agent or dry powder agent according to the specific situation of the fire. The pressure sensor 10 monitors the pressure change in the agent bottle in real time to ensure the smooth and stable output of the agent.

[0025] The water-based agent and the dry powder agent are respectively transported to the nozzle pipeline 7 through the water-based agent main pipe 6 and the dry powder agent main pipe 12, and then evenly sprayed on the fire source area by multiple groups of agent nozzles 8. The water-based agent is mainly used to cool and suppress the flame, while the dry powder agent extinguishes the flame through chemical action and prevents re-ignition. The flexible selection and application of the two agents greatly improve the fire extinguishing efficiency and effect.

[0026] In addition, during the fire extinguishing process, the audible and visual warning light 17 will be started synchronously to emit a strong audible and visual alarm signal to remind the on-site personnel to pay attention and take corresponding safety measures. At the same time, the setting of the manual starter 18 and the reset switch 19 provides convenience for manual operation in case of emergency and system reset after fire extinguishing.

[0027] This mine belt conveyor automatic fire extinguishing device realizes the early detection and rapid response to the fire of the belt conveyor equipment through advanced detection technology and precise control system. Its unique "AND" logic association design, flexible selection of fire extinguishing agents, and perfect alarm and reset functions together constitute an efficient, reliable and intelligent fire extinguishing system, providing a strong guarantee for the safe operation of the mine belt conveyor.

[0028] When a fire occurs in the belt or the motor, both detect the fire through different detectors respectively, and use the signal output wire to feedback to the host. The host identifies through logic whether it is a fire in the belt area or the motor area, and then releases different agents through different fire extinguishing equipment to achieve the fire extinguishing effect.

[0029] I. Manual startup

[0030] When a person first discovers a fire or abnormal high temperature at the scene, the person can manually press the manual start switch without a warning time and with a rapid response.

[0031] II. Mechanical emergency start

[0032] In special cases, when the device cannot be started by automatic start or manual start, manually open the emergency manual valve to release the agent into the fire area.

[0033] The working principle and usage process of the present utility model: After the present utility model is installed, work according to the above embodiments until all work steps are completed.

[0034] The above is only a preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, makes equivalent substitutions or changes, and should be covered within the protection scope of the present utility model.

[0035] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inner", "front", "center", "both ends", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0036] In the present utility model, unless otherwise clearly defined and limited, the terms "installed", "set", "connected", "fixed", "swivelly connected", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. Unless otherwise clearly limited, for those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0037] In accordance with the embodiments of the present utility model as described above, these embodiments do not describe all the details in detail, nor do they limit the utility model to only the specific embodiments. Obviously, many modifications and variations can be made according to the above description. The present specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present utility model, so that those skilled in the art can make good use of the present utility model and its modifications. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An automatic fire extinguishing device for a mine belt conveyor, comprising a mine belt equipment, wherein the mine belt equipment is composed of a driving motor (15) and a conveyor belt (14), and is characterized in that, An automatic fire extinguishing assembly is provided above the mine belt equipment. The automatic fire extinguishing assembly consists of a PLC control host (1), a motor fire extinguishing detection mechanism, and a belt conveyor fire extinguishing detection mechanism. The PLC control host (1) is connected to the motor fire extinguishing detection mechanism and the belt conveyor fire extinguishing detection mechanism. The belt conveyor fire extinguishing detection mechanism includes a flame sensor (2) and an infrared thermal imager (3). The flame sensor (2) and the infrared thermal imager (3) are located above the mine belt equipment. The motor fire extinguishing detection mechanism includes a cable-type temperature-sensing cable (4). The cable-type temperature-sensing cable (4) is installed on the drive motor (15). The PLC control host (1) is connected to the drive motor (15) through a linkage feedback signal line (5). A water-based agent bottle (16) is provided above the mine belt equipment, and a dry powder agent bottle (13) is provided on the side of the mine belt equipment. Release assemblies are installed on both the water-based agent bottle (16) and the dry powder agent bottle (13).

2. The automatic fire extinguishing device for a mine belt conveyor according to claim 1, characterized in that: The cable-type temperature-sensing cable (4) is wound outside the drive motor (15), and the cable-type temperature-sensing cable (4) is arranged in an "S" shape for contact temperature detection.

3. The automatic fire extinguishing device for a mine belt conveyor according to claim 1, characterized in that: The output ends of the water-based agent bottle (16) and the dry powder agent bottle (13) are respectively connected to a water-based agent main pipe (6) and a dry powder agent main pipe (12). The release assemblies both include electric ball valves (9). The electric ball valves (9) are connected to the PLC control host (1). The two electric ball valves (9) are respectively connected to the water-based agent main pipe (6) and the dry powder agent main pipe (12). Pressure sensors (10) are installed on both the water-based agent bottle (16) and the dry powder agent bottle (13). The pressure sensors (10) are connected to the PLC control host (1). Emergency manual valves (11) are installed on both the water-based agent main pipe (6) and the dry powder agent main pipe (12).

4. The automatic fire extinguishing device for a mine belt conveyor according to claim 3, wherein: The ends of the water-based agent main pipe (6) and the dry powder agent main pipe (12) are both connected to a spray head pipeline (7), and multiple groups of agent spray heads (8) are installed on the spray head pipeline (7).

5. The automatic fire extinguishing device for a mine belt conveyor according to claim 1, characterized in that: The PLC control host (1) is also connected to an audible and visual warning light (17), a manual starter (18), and a reset switch (19).

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