Graded composite fire extinguishing device of totally-closed pressure-resistant coal feeder

Abstract

The invention provides a graded composite fire extinguishing device of a totally-closed pressure-resistant coal feeder, and relates to the field of fire extinguishing of coal feeders, the graded composite fire extinguishing device comprises a coal feeder shell, the coal feeder shell comprises a top plate mounted at the top end of the coal feeder shell, and a plurality of monitoring modules are equidistantly arranged at the bottom end of the top plate and the top end in the coal feeder shell; a plurality of steam spraying assemblies are arranged at the bottom end of the coal feeder shell at equal intervals, a plurality of emergency fire extinguishing assemblies are arranged at the bottom end of the top plate and the top end of the interior of the coal feeder shell, a plurality of spraying assemblies are arranged at the bottom end of the coal feeder shell and the top end of the interior of the coal feeder shell, and connecting assemblies are arranged in the spraying assemblies. Through the monitoring module, carbon monoxide detection, temperature detection and thermal imaging detection are achieved through the detection module, meanwhile, response is made at different temperatures, corresponding protection actions can be achieved in the early stage, the middle stage and the later stage of a fire disaster, and the safety and reliability of the device are improved.

Description

Technical Field

[0001] This invention relates to the field of fire extinguishing for coal feeders, and more specifically, to a graded composite fire extinguishing device for a fully enclosed pressure-resistant coal feeder. Background Technology

[0002] In recent years, internal overheating and spontaneous combustion have frequently occurred in coal feeders. The main causes include abnormal coal characteristics, equipment component failures, and improper operation and maintenance. The internal overheating and spontaneous combustion of a fully enclosed, pressure-resistant, weighing metering coal feeder is essentially a contradiction between the exothermic oxidation of coal and the inability of heat to dissipate in a confined space, compounded by a continuous supply of oxygen. Abnormal coal characteristics are the foundation, equipment component failures are the direct ignition source, improper operation and maintenance amplify the risk, and the external environment is a contributing factor. All four factors work together to ultimately lead to the overheating and spontaneous combustion accident. It is understood that existing fire extinguishing technologies for similar coal feeders have shortcomings: traditional devices lack early warning mechanisms for fires, only activating at the open flame stage, thus missing the best opportunity to control the fire; and traditional steam extinguishing devices rely on a single temperature sensor, which is prone to misjudgment due to dust cover.

[0003] For example, the utility model patent (application number: 201922323907.2) discloses a "coal feeder system with an automatic fire-fighting device," the description of which states that the coal feeder system includes: a coal feeder, a temperature sensor, a smoke detector, a fire alarm control panel, an alarm, and a fire extinguishing device; the coal feeder includes a coal feeder housing, a belt, and rollers; the temperature sensor is installed on the upper part of the outer surface of the coal feeder housing, and the smoke detector is installed on the top of the inner surface of the coal feeder; the fire extinguishing device includes a fire extinguishing nozzle, a connecting conduit, and a pressure tank; the fire extinguishing nozzle is located inside the coal feeder housing and is connected to the pressure tank through the connecting conduit, and a protective baffle is provided on the inner side of the fire extinguishing nozzle; an air extraction port is provided on the top of the coal feeder housing, and the air extraction port is connected to an air pump; the fire alarm control panel is connected to the temperature sensor, the smoke detector, the alarm, and the air pump respectively. This utility model is applicable to the automatic fire extinguishing of coal feeder systems; the above patent can corroborate the defects of the prior art.

[0004] Therefore, we made improvements and proposed a graded composite fire extinguishing device for a fully enclosed pressure-resistant coal feeder. Summary of the Invention

[0005] The purpose of this invention is to solve the problem that current devices lack an early warning mechanism for fires and are prone to misjudgment.

[0006] To achieve the above-mentioned objectives, the present invention provides a graded composite fire extinguishing device for a fully enclosed pressure-resistant coal feeder to improve the aforementioned problems.

[0007] The application is as follows: A graded composite fire extinguishing device for a fully enclosed pressure-resistant coal feeder includes a coal feeder housing. Control valves are installed on both the discharge and inlet of the coal feeder housing. The coal feeder housing includes a top plate mounted on the top of the housing. Several monitoring modules are equidistantly arranged at the bottom of the top plate and the top of the interior of the coal feeder housing. Several steam ejection components are equidistantly arranged at the bottom of the coal feeder housing. Several emergency fire extinguishing components are arranged at the bottom of the top plate and the top of the interior of the coal feeder housing. Several spray components are arranged at the bottom of the coal feeder housing and the top of the interior of the coal feeder housing. The monitoring modules, emergency fire extinguishing components, and spray components are staggered. A connecting component is located inside each spray component, a transmission component is located at the bottom of the connecting component, a swinging component is located outside each spray component, and an elastic component is located at the rear end of each spray component.

[0008] As a preferred technical solution of this application, the monitoring module includes an infrared thermal imaging probe, a fiber optic temperature sensor is provided on one side of the infrared thermal imaging probe, a carbon monoxide sensor is provided on the other side of the infrared thermal imaging probe, and a PLC controller is provided on the outside of the coal feeder housing, with three levels of response thresholds pre-stored.

[0009] As a preferred technical solution of this application, the steam injection assembly includes a steam delivery pipe, which is fixed to the bottom end of the coal feeder housing. A steam nozzle is provided above the steam delivery pipe and is fixedly connected to the bottom end of the inside of the coal feeder housing. The top end of the steam delivery pipe passes through the coal feeder housing and is fixedly connected to the steam nozzle. The nozzle of the steam nozzle is fan-shaped.

[0010] As a preferred technical solution of this application, the emergency fire extinguishing component includes a fixed nozzle, the top of which is provided with an installation pipe, and a perfluorohexanone storage tank is provided outside the coal feeder housing, with the installation pipe connected to the perfluoroethyl ketone storage tank.

[0011] As a preferred technical solution of this application, the spray assembly includes a connecting pipe, an installation cylinder is fixedly provided at the bottom end of the connecting pipe, the connecting assembly is located at the bottom end of the installation cylinder, and a spray nozzle is provided at the bottom end of the connecting assembly.

[0012] As a preferred technical solution of this application, the connecting assembly includes a connecting hose fixed between the mounting cylinder and the spray nozzle.

[0013] As a preferred technical solution of this application, the transmission assembly includes a transmission plate, which is inclinedly disposed inside the spray nozzle. The transmission plate has several connecting slots, and transmission rods are fixedly disposed on both sides of the transmission plate. The ends of the transmission rods extend through the spray nozzle to the outside of the spray nozzle. A blocking block is fixedly disposed at the rear end inside the spray nozzle, and the blocking block is located at the top of the transmission plate.

[0014] As a preferred technical solution of this application, the swing assembly includes a swing rod fixed to the end of the transmission rod. The swing rod is made of soft rubber. A fixed post is fixedly provided at the bottom end of the swing rod. A counterweight plate is fixedly provided at both the front and rear ends of the fixed post. Inclined surfaces are provided on both sides of the counterweight plate away from the fixed post.

[0015] As a preferred technical solution of this application, the elastic component includes an elastic pull rope, which is fixed to the rear end of the spray head, and the end of the elastic pull rope is located behind the spray head.

[0016] As a preferred technical solution of this application, the mounting cylinder is rotatably provided with connecting rods on both sides, the ends of the connecting rods are rotatably connected to the outside of the transmission rod, and a blocking disc is provided on the side of the connecting rod away from the spray nozzle, the blocking disc being fixed to the outside of the transmission plate.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: In the scheme of this application: 1. Through the monitoring module, carbon monoxide detection, temperature detection, and thermal imaging detection are realized. At the same time, it responds to different temperatures to provide corresponding protection in the early, middle and late stages of a fire, which improves the safety and reliability of the device and solves the problem that the existing technology lacks an early fire warning mechanism and is prone to misjudgment. 2. By setting up a transmission component and a swing component, the transmission component enables the spray assembly to drive the spray nozzles to swing during operation, thereby further expanding the effective spray range. This reduces the installation of the spray assembly and thus reduces the space it occupies. It solves the problem in the prior art that the spray assembly is usually directly fixed and the nozzles cannot swing, resulting in a limited spray range and an increase in the number of installations. 3. By setting up steam ejection components, spray components and emergency fire extinguishing components, the steam ejection components, spray components and emergency fire extinguishing components can operate simultaneously during fire extinguishing, realizing multiple composite fire extinguishing, effectively improving fire extinguishing efficiency and success rate, and solving the problem that fire extinguishing devices in the existing technology usually use a single function for fire extinguishing, resulting in low fire extinguishing efficiency and increased losses, as well as an increased probability of accidents. 4. By using the connecting rod, the connecting component is supported by the connecting component, which improves the service life of the connecting component and solves the problem that the connecting component directly bears the swing of the spray component and the downward force during the operation of the spray component, resulting in a short service life. Attached Figure Description

[0018] Figure 1 A schematic diagram of the graded composite fire extinguishing device for the fully enclosed pressure-resistant coal feeder provided in this application; Figure 2 A schematic diagram of the steam ejection component in the graded composite fire extinguishing device for the fully enclosed pressure-resistant coal feeder provided in this application; Figure 3 A schematic diagram of the monitoring module in the graded composite fire extinguishing device for the fully enclosed pressure-resistant coal feeder provided in this application; Figure 4 A schematic diagram of the spray assembly in the graded composite fire extinguishing device for the fully enclosed pressure-resistant coal feeder provided in this application; Figure 5 A schematic diagram showing the disassembled structure of the swing assembly and the spray assembly in the graded composite fire extinguishing device for the fully enclosed pressure-resistant coal feeder provided in this application; Figure 6 A schematic diagram of the transmission component in the graded composite fire extinguishing device for the fully enclosed pressure-resistant coal feeder provided in this application; Figure 7 A side view of the elastic component and transmission component in the graded composite fire extinguishing device for the fully enclosed pressure-resistant coal feeder provided in this application.

[0019] The image shows: 1. Coal feeder casing; 11. Top plate; 12. Control valve; 2. Monitoring module; 21. Infrared thermal imaging probe; 22. Fiber optic temperature sensor; 23. Carbon monoxide sensor; 3. Steam ejection assembly; 31. Steam nozzle; 32. Steam delivery pipe; 4. Emergency fire extinguishing assembly; 41. Fixed nozzle; 42. Installation pipe; 5. Sprinkler assembly; 51. Connecting pipe; 52. Installation cylinder; 53. Sprinkler nozzle; 6. Connecting assembly; 61. Connecting hose; 62. Connecting rod; 7. Transmission assembly; 71. Transmission plate; 72. Transmission rod; 73. Blocking disc; 74. Blocking block; 8. Swing assembly; 81. Swing rod; 82. Fixed column; 83. Counterweight plate; 9. Elastic assembly; 91. Elastic pull rope. Detailed Implementation

[0020] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present 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 should fall within the scope of protection of the present invention.

[0021] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0022] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0023] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0024] Example 1 Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 6 A graded composite fire extinguishing device for a fully enclosed pressure-resistant coal feeder includes a coal feeder housing 1, specifically the housing of a fully enclosed pressure-resistant belt coal feeder. Control valves 12 are installed on both the discharge port and the inlet of the coal feeder housing 1. The control valves 12 include, but are not limited to, pneumatic slide valves. The opening and closing of the discharge port and the inlet are controlled by the control valves 12. The coal feeder housing 1 includes a top plate 11 installed on the top of the coal feeder housing 1. The top plate 11 is used to cover the top of the coal feeder housing 1 and close the opening above the coal feeder housing 1. Several monitoring modules 2 are equidistantly arranged at the bottom of the top plate 11 and the top of the inside of the coal feeder housing 1. Multiple monitoring is achieved through the monitoring modules 2 to avoid failure to respond when the internal temperature of the coal feeder housing 1 is too high or the carbon monoxide content is too high. Several steam ejection components 3 are equidistantly arranged at the bottom of the coal feeder housing 1. The steam ejection components 3 are used to eject steam to prevent flame combustion. Several emergency fire extinguishing components 4 are arranged at the bottom of the top plate 11 and the top of the inside of the coal feeder housing 1. The emergency fire extinguishing components 4 are used to spray perfluorohexanone to effectively cool and extinguish the fire inside the coal feeder housing 1. Several spraying components 5 are arranged at the bottom of the coal feeder housing 1 and the top of the inside of the coal feeder housing 1. The spraying components 5 are used to spray water to extinguish the fire. The positions of the monitoring module 2, the emergency fire extinguishing components 4 and the spraying components 5 are staggered. The spray assembly 5 has a connecting component 6 inside, and a transmission component 7 works with the connecting component 6 to swing back and forth, increasing the spraying range of the spray assembly 5. Due to the conveying distance, the coal feeder housing 1 is long and narrow, and the back and forth swing is more suitable for the long and narrow inner cavity of the coal feeder housing 1. The bottom end of the connecting component 6 is equipped with a transmission component 7, which drives the swing component 8 to swing through the water flow impact. The outside of the spray assembly 5 is equipped with a swing component 8, which is used to increase the swing amplitude of the spray assembly 5. The rear end of the spray assembly 5 is equipped with an elastic component 9, which is used to increase the stability of the swing.

[0025] Furthermore, such as Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the monitoring module 2 includes an infrared thermal imaging probe 21. The infrared thermal imaging probe 21 uses a Fresnel lens to enhance its recognition capability and can capture abnormal hot spots ≥50℃. A fiber optic temperature sensor 22 is installed on one side of the infrared thermal imaging probe 21, and a carbon monoxide sensor 23 is installed on the other side. The infrared thermal imaging probe 21, fiber optic temperature sensor 22, and carbon monoxide sensor 23 located at the bottom of the top plate 11 are connected to the top plate 11. The infrared thermal imaging probe 21, fiber optic temperature sensor 22, and carbon monoxide sensor 23 located at the top inside the coal feeder housing 1 are connected to the coal feeder housing 1. The dual monitoring by the infrared thermal imaging probe 21 and fiber optic temperature sensor 22 effectively reduces the false alarm rate, enabling early intervention in fire situations. A PLC controller is installed outside the coal feeder housing 1. The infrared thermal imaging probe 21, fiber optic temperature sensor 22, and carbon monoxide sensor 23 are all electrically connected to the PLC controller, which pre-stores three levels of response thresholds. 1. Warning level: The temperature measured by the infrared thermal imaging probe 21 and the fiber optic temperature sensor 22, after calibration, is 80-120℃ or the CO concentration is 10-20ppm; 2. Alert Level: Temperature 120-180℃ or CO concentration 20-50ppm; 3. Extinguishing level: Temperature ≥180℃ or detects open flame; The fire extinguishing system is divided into three levels: Level 1 fire extinguishing is achieved through the steam ejection assembly 3; Level 2 fire extinguishing is achieved through the spray assembly 5 and the connecting assembly 6, transmission assembly 7, swing assembly 8, and elastic assembly 9 installed on the spray assembly 5; Level 3 is emergency fire extinguishing, which includes the emergency fire extinguishing assembly 4 and a perfluorohexanone storage tank installed outside the coal feeder casing 1, which is controlled by a solenoid valve to release the extinguishing concentration of 4-6%. Workflow: 1. Early warning level: The PLC controller emits an audible and visual alarm through a speaker and flashing lights, and sends information to the computers or other communication devices of relevant personnel to prompt inspections, thus enabling early intervention in fires; 2. Alert Level: Automatically closes the feeder inlet control valve 12, pre-pressurizes the steam pipeline, and puts the water pump and valves for water supply into standby mode, ready to start and open to supply water to the spray assembly 5 at any time; 3. Extinguishing level: Simultaneously activates a three-level extinguishing mechanism—steam filling and suffocation, fine water mist cooling, and perfluorohexanone chemical inhibition. The discharge and inlet control valves 12 are closed to form a sealed space. After extinguishing the fire, the positive steam pressure is maintained for 30 minutes to prevent reignition. Through the three-level composite extinguishing, the extinguishing response time is shortened and the extinguishing success rate is effectively improved.

[0026] Furthermore, such as Figure 2 and Figure 3As shown, the steam ejection assembly 3 includes a steam delivery pipe 32, which is used to deliver steam to the steam nozzle 31. The steam delivery pipe 32 is fixed to the bottom end of the coal feeder housing 1. Above the steam delivery pipe 32, there is a steam nozzle 31 that is fixedly connected to the bottom end of the inside of the coal feeder housing 1. The steam nozzle 31 is used to eject steam. The steam filling the inside of the coal feeder housing 1 can reduce the oxygen content to achieve a suffocation effect and prevent combustion. The top end of the steam delivery pipe 32 passes through the coal feeder housing 1 and is fixedly connected to the steam nozzle 31. The steam nozzle 31 and the steam delivery pipe 32 are internally connected. The nozzle of the steam nozzle 31 is fan-shaped and is connected to the steam source through the steam delivery pipe 32. The steam source is taken from the low-pressure steam header, with a pressure of 0.3-0.5MPa. The steam is taken from industrial waste heat. The pipes connecting the steam, including the steam delivery pipe 32, are made of 304 stainless steel. The steam nozzle 31 is tilted at 45° toward the belt contact surface of the coal feeder.

[0027] Furthermore, such as Figure 1 and Figure 3 As shown, the emergency fire extinguishing component 4 includes a fixed nozzle 41. The end of the fixed nozzle 41 located at the top of the top plate 11 extends through the top plate 11 to the bottom of the top plate 11. The end of the fixed nozzle 41 located at the top of the coal feeder housing 1 extends through the coal feeder housing 1 to the interior of the coal feeder housing 1. The top of the fixed nozzle 41 is provided with an installation pipe 42, and the fixed nozzle 41 is connected to the interior of the installation pipe 42. The exterior of the coal feeder housing 1 is provided with a perfluorohexanone storage tank, and the installation pipe 42 is connected to the perfluorohexanone storage tank. The release is controlled by a solenoid valve, thereby spraying perfluorohexanone through the fixed nozzle 41 to cool the interior of the coal feeder housing 1. The fixed nozzle 41 is a perfluorohexanone nozzle.

[0028] Furthermore, such as Figure 1 , Figure 3 , Figure 4 , Figure 5 and Figure 7 As shown, the spray assembly 5 includes a connecting pipe 51. The connecting pipe 51 located at the top of the coal feeder housing 1 extends through the coal feeder housing 1 into the interior of the coal feeder housing 1. The connecting pipe 51 located at the top of the top plate 11 extends through the top plate 11 into the bottom of the top plate 11. An installation cylinder 52 is fixedly provided at the bottom of the connecting pipe 51. The connecting pipe 51 is used to connect to a water source. Water is controlled to flow to the spray nozzle 53 by a water pump and a valve. The interior of the connecting pipe 51 and the installation cylinder 52 are connected. The connecting assembly 6 is located at the bottom of the installation cylinder 52. A spray nozzle 53 is provided at the bottom of the connecting assembly 6. Water is sprayed out through the spray nozzle 53.

[0029] Example 2 The graded composite fire extinguishing device for the fully enclosed pressure-resistant coal feeder provided in Example 1 has been further optimized, specifically, as follows: Figure 3 , Figure 4 and Figure 5 As shown, the connecting assembly 6 includes a connecting hose 61 fixed between the mounting cylinder 52 and the spray head 53. The interior of the mounting cylinder 52, the interior of the connecting hose 61 and the interior of the spray head 53 are connected. The connecting hose 61 includes, but is not limited to, a metal hose.

[0030] Furthermore, such as Figure 5 , Figure 6 and Figure 7 As shown, the transmission assembly 7 includes a transmission plate 71, which is inclinedly disposed inside the spray nozzle 53. When water is pumped into the connecting pipe 51, it will first impact the transmission plate 71. The inclination angle of the transmission plate 71 guides the water flow to the position of the blocking block 74. The water flow is concentrated behind the transmission plate 71 and pushes the transmission plate 71 to rotate, which drives the swing assembly 8 to rotate as well. Together with the connecting hose 61, the spray nozzle 53 swings. The transmission plate 71 has several connecting slots for water to pass through it. Transmission rods 72 are fixed on both sides of the transmission plate 71. The transmission rods 72 are used to transmit power to the swing assembly 8. The ends of the transmission rods 72 extend through the spray nozzle 53 to the outside of the spray nozzle 53. A blocking block 74 is fixed at the rear end inside the spray nozzle 53. The blocking block 74 is used to block the transmission plate 71 and keep it in an inclined state. The blocking block 74 is located at the top of the transmission plate 71.

[0031] Furthermore, such as Figure 4 , Figure 5 and Figure 7 As shown, the swing assembly 8 includes a swing rod 81 fixed to the end of the transmission rod 72. The swing rod 81 is made of soft rubber. Through the elasticity and flexibility of the swing rod 81, the problem of excessive swing resistance caused by the weight of the counterweight plate 83 during the initial rotation can be avoided. A fixed post 82 is fixedly provided at the bottom end of the swing rod 81. When the transmission plate 71 rotates, the swing rod 81, the fixed post 82 and the counterweight plate 83 are driven to swing through the transmission rod 72. The front and rear ends of the fixed post 82 are fixed with counterweight plates 83. When the transmission plate 71 rotates, the weight of the counterweight plate 83 increases the inertia during swing, thereby increasing the swing amplitude of the spray nozzle 53 and further improving the spray range that the spray nozzle 53 can spray. This reduces the number of spray assemblies 5 installed, reduces the space occupied, and reduces costs. The counterweight plate 83 has inclined surfaces on both sides of the end away from the fixed post 82. The two inclined surfaces on the counterweight plate 83 can cut through the wind resistance during swing, thereby reducing the wind resistance when the swing assembly 8 and the transmission assembly 7 swing back and forth.

[0032] Furthermore, such as Figure 3 , Figure 4 , Figure 5 and Figure 7As shown, the elastic component 9 includes an elastic pull rope 91, which is fixed to the rear end of the spray nozzle 53. When the spray nozzle 53 swings forward, the elastic pull rope 91 at the rear pulls the spray nozzle 53 back, thereby increasing the swinging effect. The end of the elastic pull rope 91 is located behind the spray nozzle 53. The end of the elastic pull rope 91 located below the top plate 11 is fixedly connected to the top plate 11. The end of the elastic pull rope 91 located at the top of the inside of the coal feeder housing 1 is fixedly connected to the coal feeder housing 1.

[0033] Example 3 The graded composite fire extinguishing device for the fully enclosed pressure-resistant coal feeder provided in Examples 1 and 2 has been further optimized, such as... Figure 3 , Figure 4 and Figure 5 As shown, connecting rods 62 are rotatably provided on both sides of the mounting cylinder 52. The ends of the connecting rods 62 are rotatably connected to the outside of the transmission rod 72. The connecting rods 62 on both sides increase the stability of the swing. At the same time, the connecting rods 62 resist the downward pull of the spray nozzle 53 when subjected to water pressure, thus extending the service life of the connecting hose 61. A blocking plate 73 is provided on the side of the connecting rod 62 away from the spray nozzle 53. The blocking plate 73 is fixed to the outside of the transmission plate 71 and is used to block the connecting rod 62 and limit the position of the bottom end of the connecting rod 62.

[0034] The application process of the graded composite fire extinguishing device for the fully enclosed pressure-resistant coal feeder provided by this invention is as follows: During the third-level fire extinguishing process, the control valve 12 closes the outlet and inlet of the coal feeder casing 1 to isolate it from the outside. The solenoid valve controls the steam to be delivered to the steam nozzle 31 through the steam delivery pipe 32. The steam nozzle 31 then injects steam into the interior of the coal feeder casing 1 to reduce oxygen and achieve an asphyxiation effect. The solenoid valve on the perfluoroethyl ketone storage tank is controlled to release perfluoroethyl ketone through the installation pipe 42 into the fixed nozzle 41, so that the fixed nozzle 41 sprays perfluoroethyl ketone to cool and extinguish the fire inside the coal feeder casing 1. Simultaneously, water is pumped into the installation cylinder 52 through the connecting pipe 51, and enters the spray nozzle 53 through the connecting hose 61. The water flow impacts the transmission plate 71, and the tilt angle of the transmission plate 71 concentrates the water flow to the position of the transmission plate 71 near the blocking block 74, thereby driving the transmission plate 71 to rotate. Through the transmission rod 72, the swing assembly 8 swings. When the counterweight plate 83 swings to the rear, the spray nozzle 53 swings accordingly, and the water flow sprays out through the end of the spray nozzle 53 to spray and extinguish the fire inside the lower part of the coal feeder housing 1. At the same time, after the transmission plate 71 rotates and opens, the weight of the counterweight plate 83 drives the transmission plate 71 to rotate and reset. Through the lever principle and the inertia brought by the weight of the counterweight plate 83, the impact force of the water flow inside the spray nozzle 53 is overcome, and it collides with the blocking block 74. The elasticity of the swing rod 81 and the elastic rope 91 further amplifies the collision effect, causing the spray nozzle 53 to swing through the connecting hose 61. This back-and-forth swinging is achieved, increasing the spray range of the spray nozzle 53.

[0035] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0036] Obviously, the embodiments described above are merely some embodiments of the present invention, not all embodiments. The accompanying drawings show preferred embodiments of the present invention, but do not limit the patent scope of the present invention. The present invention can be implemented in many different forms; rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this invention.

Claims

1. A graded composite fire extinguishing device for a fully enclosed pressure-resistant coal feeder, characterized in that, The device includes a coal feeder housing (1), on which control valves (12) are installed at both the discharge port and the inlet. The coal feeder housing (1) includes a top plate (11) installed at the top of the coal feeder housing (1). Several monitoring modules (2) are equidistantly arranged at the bottom of the top plate (11) and at the top of the inside of the coal feeder housing (1). Several steam ejection components (3) are equidistantly arranged at the bottom of the coal feeder housing (1). Several monitoring modules (2) are equidistantly arranged at the bottom of the coal feeder housing (1). Several monitoring modules (2) are equidistantly arranged at the bottom of the top plate (11) and at the top of the inside of the coal feeder housing (1). An emergency fire extinguishing component (4) is provided. Several spray components (5) are provided at the bottom end of the coal feeder housing (1) and the top end inside the coal feeder housing (1). The positions of the monitoring module (2), the emergency fire extinguishing component (4) and the spray components (5) are staggered. A connecting component (6) is provided inside the spray component (5). A transmission component (7) is provided at the bottom end of the connecting component (6). A swing component (8) is provided outside the spray component (5). An elastic component (9) is provided at the rear end of the spray component (5).

2. The graded composite fire extinguishing device for a fully enclosed pressure-resistant coal feeder according to claim 1, characterized in that, The monitoring module (2) includes an infrared thermal imaging probe (21), with an optical fiber temperature sensor (22) on one side of the infrared thermal imaging probe (21) and a carbon monoxide sensor (23) on the other side. A PLC controller is provided on the outside of the coal feeder housing (1), with three levels of response thresholds pre-stored.

3. The graded composite fire extinguishing device for a fully enclosed pressure-resistant coal feeder according to claim 2, characterized in that, The steam ejection assembly (3) includes a steam delivery pipe (32), which is fixed to the bottom end of the coal feeder housing (1). A steam nozzle (31) is provided above the steam delivery pipe (32) and is fixedly connected to the bottom end of the coal feeder housing (1). The top end of the steam delivery pipe (32) passes through the coal feeder housing (1) and is fixedly connected to the steam nozzle (31). The nozzle of the steam nozzle (31) is fan-shaped.

4. The graded composite fire extinguishing device for a fully enclosed pressure-resistant coal feeder according to claim 3, characterized in that, The emergency fire extinguishing component (4) includes a fixed nozzle (41), the top of which is provided with an installation pipe (42). The outer side of the coal feeder housing (1) is provided with a perfluorohexanone storage tank, and the installation pipe (42) is connected to the perfluorohexanone storage tank.

5. The graded composite fire extinguishing device for a fully enclosed pressure-resistant coal feeder according to claim 1 or 4, characterized in that, The spray assembly (5) includes a connecting pipe (51), and an installation cylinder (52) is fixedly provided at the bottom end of the connecting pipe (51). The connecting assembly (6) is located at the bottom end of the installation cylinder (52), and a spray nozzle (53) is provided at the bottom end of the connecting assembly (6).

6. The graded composite fire extinguishing device for a fully enclosed pressure-resistant coal feeder according to claim 5, characterized in that, The connection assembly (6) includes a connecting hose (61) fixed between the mounting cylinder (52) and the spray nozzle (53).

7. The graded composite fire extinguishing device for a fully enclosed pressure-resistant coal feeder according to claim 6, characterized in that, The transmission assembly (7) includes a transmission plate (71), which is inclinedly disposed inside the spray nozzle (53). The transmission plate (71) has several connecting slots. Transmission rods (72) are fixedly disposed on both sides of the transmission plate (71). The ends of the transmission rods (72) extend through the spray nozzle (53) to the outside of the spray nozzle (53). A blocking block (74) is fixedly disposed at the rear end inside the spray nozzle (53). The blocking block (74) is located at the top of the transmission plate (71).

8. The graded composite fire extinguishing device for a fully enclosed pressure-resistant coal feeder according to claim 7, characterized in that, The swing assembly (8) includes a swing rod (81) fixed to the end of the transmission rod (72). The swing rod (81) is made of soft rubber. A fixed post (82) is fixed at the bottom of the swing rod (81). A counterweight plate (83) is fixed at both the front and rear ends of the fixed post (82). The counterweight plate (83) has inclined surfaces on both sides at the end away from the fixed post (82).

9. The graded composite fire extinguishing device for a fully enclosed pressure-resistant coal feeder according to claim 8, characterized in that, The elastic component (9) includes an elastic pull cord (91) fixed to the rear end of the spray nozzle (53), with the end of the elastic pull cord (91) located behind the spray nozzle (53).

10. The graded composite fire extinguishing device for a fully enclosed pressure-resistant coal feeder according to claim 9, characterized in that, The mounting cylinder (52) has connecting rods (62) rotatably provided on both sides. The ends of the connecting rods (62) are rotatably connected to the outside of the transmission rod (72). A baffle plate (73) is provided on the side of the connecting rod (62) away from the spray nozzle (53). The baffle plate (73) is fixed to the outside of the transmission plate (71).

Images