Automatic air injection fire extinguishing device for mining belt conveyor

Abstract

The utility model provides an automatic jet fire extinguishing device for a mining belt conveyor, which comprises fire extinguishing box bodies, a cleaning mechanism, a gas conveying pipe, a mounting seat assembly and a control module, the fire extinguishing box bodies are uniformly arranged on two sides of a conveyor belt, and a gas sensor and a temperature sensor are arranged on the inner side of each fire extinguishing box body; the conveyor belt fire extinguishing device not only monitors the machine head of the conveyor belt, but also can monitor the temperature and the gas concentration at any position of the conveyor belt, and the inner side of the fire extinguishing box body is provided with the gas outlet holes, so that if any position of the conveyor belt is on fire, fire extinguishing gas can be timely and effectively sprayed out to extinguish fire, and the fire detection is more accurate and sensitive; the fire extinguishing time is shorter, the efficiency is higher, and fire at all positions of the conveyor belt can be extinguished in time.

Description

Technical Field

[0001] The utility model relates to the technical field of safe production in coal mines, in particular to an automatic jet fire extinguishing device for a mining belt conveyor. Background Art

[0002] The cause of fire accidents in underground coal mine belt lanes is mostly due to the friction between the belt and the transported coal or faulty rollers, which generates heat. The heat accumulation leads to the occurrence of fire accidents. Due to the hidden and sudden nature of belt fires, it is difficult to detect the initial fire in time, which causes the fire to spread further.

[0003] The "Coal Mine Safety Regulations" require that belt conveyors must be equipped with complete protective devices, but current protective devices, such as smoke sensors and automatic sprinkler fire extinguishing devices, are mostly installed at the head of the belt conveyor and have a single trigger mechanism. When a fire occurs in the middle section of the belt transmission, the environmental parameter collection time is long and the protection capability of the device is weak. This has drawbacks in detecting the initial fire in the middle section of the conveyor belt, causing the fire to spread and causing unnecessary losses.

[0004] Therefore, in view of the technical problem that the above-mentioned mining belt conveyor cannot promptly and effectively extinguish the fire generated during the transportation process, it is necessary to provide a device with automatic jet fire extinguishing function. Utility Model Content

[0005] The utility model aims to provide an automatic jet fire extinguishing device for a mining belt conveyor to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] An automatic jet fire extinguishing device for a mining belt conveyor, comprising:

[0008] A fire extinguishing box, the fire extinguishing box is arranged on both sides of the conveyor belt, and the fire extinguishing boxes on both sides of the conveyor belt are arranged opposite to each other, the fire extinguishing box comprises a hollow fire extinguishing box, an air outlet is arranged on the inner side of the fire extinguishing box close to the conveyor belt, a fixing frame is fixed on the side of the fire extinguishing box at the bottom of the air outlet, and is used to be fixed on the conveyor belt, and an air inlet pipe connected to the inside of the fire extinguishing box is arranged on the outer side of the fire extinguishing box;

[0009] A cleaning mechanism, the cleaning mechanism comprising a rotating rod arranged inside the fire extinguishing box, a hinge seat being fixed at the upper end of the fire extinguishing box, a middle part of the rotating rod being hinged on the hinge seat, a cleaning plate being fixed at the lower end, and a brush being fixed on the side of the cleaning plate close to the fire extinguishing box;

[0010] An air delivery pipe, one end of which is sealed and the other end is connected to the output end of the air delivery pump. The air delivery pipe is fixed on the air intake pipe and communicated with the inside of the air intake pipe;

[0011] A mounting seat assembly, the mounting seat assembly is arranged on both sides of the conveyor belt, including a mounting seat, a fixing frame is fixed at the bottom of the mounting seat, and is used to fix the mounting seat on the conveyor belt, and a control module is fixed on the outer side of the mounting seat;

[0012] A sensor assembly, wherein the sensor assembly includes a gas sensor and a temperature sensor, which are respectively fixed on the inner side of the fire extinguishing box and are used to measure the specific gas concentration and temperature on the surface of the conveyor belt;

[0013] The control module includes a microcontroller, which is electrically connected to a gas sensor and a temperature sensor and is used to receive data measured by the gas sensor and the temperature sensor.

[0014] Furthermore, at least two groups of fire extinguishing boxes are fixed on each side of the conveyor belt, and a pushing hinge seat is fixed on the upper end of the rotating rod. The pushing hinge seat on each side of the conveyor belt is connected through a linkage rod parallel to the conveyor belt. One end of the linkage rod is hinged to one end of the electric telescopic rod, and the other end of the electric telescopic rod is hinged to the inner side of the mounting seat.

[0015] Furthermore, the electric telescopic rod is electrically connected to a motor drive module, the motor drive module is electrically connected to a microcontroller, and the microcontroller drives the electric telescopic rod to extend and retract through the motor drive module.

[0016] Furthermore, a solenoid valve is provided on the air intake pipe outside the fire extinguisher box, the solenoid valve is electrically connected to a solenoid valve driving module, the solenoid valve driving module is electrically connected to a microcontroller, and the microcontroller drives the solenoid valve to open and close through the solenoid valve driving module.

[0017] Furthermore, a plurality of air outlet holes are evenly arranged on the inner side surface of the fire extinguisher box and are distributed in an arc shape. The circular shape of the air outlet holes distributed in the arc shape is located on the hinge axis of the rotating rod and the hinge seat, and a metal mesh is arranged on the air outlet holes.

[0018] Furthermore, an inverted U-shaped protective plate is provided on the inner side of the fire extinguishing box, the gas sensor and the temperature sensor are located inside the protective plate, and the gas sensor is a carbon dioxide concentration sensor.

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] The fire extinguishing boxes of the utility model are evenly arranged on both sides of the conveyor belt, and a gas sensor and a temperature sensor are arranged on the inside of each fire extinguishing box, which can monitor not only the head of the conveyor belt but also the temperature and gas concentration of any position of the conveyor belt, and air outlets are arranged on the inside of the fire extinguishing box, so if any position of the conveyor belt catches fire, fire extinguishing gas can be sprayed out in time and effectively to extinguish the fire, so the detection of fire is more accurate and sensitive, the fire extinguishing takes less time and is more efficient, and the fires in various places of the conveyor belt can be extinguished in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the inner structure of the fire extinguishing box in the utility model;

[0023] Figure 3 This is a schematic diagram of the outer structure of the fire extinguishing box in the utility model;

[0024] Figure 4 It is a structural schematic diagram of the cleaning mechanism in the utility model;

[0025] Figure 5 It is a structural schematic diagram of the mounting seat assembly in the utility model;

[0026] Figure 6 This is a schematic diagram of the structure of the utility model applied to a conveyor belt;

[0027] Figure 7 It is a schematic diagram of the system structure of the control module in the utility model.

[0028] In the figure: a fire extinguishing box body 10, a fire extinguishing box 11, an air outlet 12, a fixing frame 13, an air inlet pipe 14, a solenoid valve 15, a cleaning mechanism 20, a rotating rod 22, a hinge seat 21, a cleaning plate 23, a brush 24, a push hinge seat 25, a linkage rod 26, a gas pipe 30, a mounting seat assembly 40, a mounting seat 41, an electric telescopic rod 42, a sensor assembly 50, a gas sensor 51, a temperature sensor 52, a protective plate 53, a control module 60, a microcontroller 61, a motor drive module 62, a solenoid valve drive module 63, an air pump 70, and a conveyor belt 80. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] Example

[0031] See also Figures 1 to 7 , the utility model provides a technical solution:

[0032] An automatic jet fire extinguishing device for a mining belt conveyor includes a fire extinguishing box 10, a cleaning mechanism 20, an air delivery pipe 30, a mounting seat assembly 40 and a control module 60, wherein:

[0033] The fire extinguishing box body 10 is arranged on both sides of the conveyor belt 80, and the fire extinguishing box bodies 10 on both sides of the conveyor belt 80 are arranged opposite to each other. The fire extinguishing box body 10 includes a hollow fire extinguishing box 11. An air outlet 12 is arranged on the inner side of the fire extinguishing box 11 close to the conveyor belt 80. A fixing frame 13 is fixed on the side of the fire extinguishing box 11 at the bottom of the air outlet 12 for fixing on the conveyor belt 80. An air inlet pipe 14 connected to the inside of the fire extinguishing box 11 is arranged on the outside of the fire extinguishing box 11.

[0034] The fire extinguishing box 11 is hollow inside and can play the role of conveying fire extinguishing gas. When the fire extinguishing gas is introduced into the air inlet pipe 14, the fire extinguishing gas will be ejected from the air outlet 12, thereby covering the surface of the conveyor belt 80 and playing the role of extinguishing fire.

[0035] The cleaning mechanism 20 includes a rotating rod 22 arranged on the inner side of the fire extinguishing box 11, a hinge seat 21 is fixed to the upper end of the fire extinguishing box 11, the middle part of the rotating rod 22 is hinged on the hinge seat 21, and a cleaning plate 23 is fixed to the lower end. A brush 24 is fixed on the side of the cleaning plate 23 close to the fire extinguishing box 11. The rotating rod 22 can rotate around the hinge seat 21, and the brush 24 is close to the inner wall of the fire extinguishing box 11, and can clean the air outlet 12 when rotating.

[0036] Furthermore, at least two groups of fire extinguishing boxes 10 are fixed on each side of the conveyor belt 80, and a pushing hinge seat 25 is fixed to the upper end of the rotating rod 22. The pushing hinge seat 25 on each side of the conveyor belt 80 is connected through a linkage rod 26 parallel to the conveyor belt. One end of the linkage rod 26 is hinged to one end of the electric telescopic rod 42, and the other end of the electric telescopic rod 42 is hinged to the inner side of the mounting seat 41. When the electric telescopic rod 42 is extended or retracted, all the rotating rods 22 can be driven to rotate through the linkage rod 26, and at the same time, the air outlet 12 on the surface of the fire extinguishing box 11 on one side is cleaned.

[0037] In this embodiment, two groups of mounting seat assemblies 40 are relatively arranged and are respectively located at the ends on both sides of the conveyor belt 80. The fire extinguishing boxes 10 on both sides of the conveyor belt 80 are symmetrically arranged, and the cleaning mechanisms 20 on the fire extinguishing boxes 10 on each side are uniformly controlled by an electric telescopic rod 42. The mounting seat assemblies 40 are arranged on both sides of the conveyor belt 80, including a mounting seat 41. A fixing frame 13 is fixed at the bottom of the mounting seat 41 for fixing the mounting seat 41 on the conveyor belt 80, and a control module 60 is fixed on the outer side of the mounting seat 41.

[0038] Furthermore, a plurality of air outlets 12 are evenly arranged on the inner side surface of the fire extinguisher box 11 and are distributed in an arc shape. The circular shape of the air outlets 12 distributed in the arc shape is located on the hinge axis of the rotating rod 22 and the hinge seat 21. When the rotating rod 22 rotates around the hinge seat 21, the brush 24 rotates accordingly close to the inner wall of the fire extinguisher box 11, and the rotation trajectory is an arc line. The air outlets 12 distributed in the arc shape ensure that all the air outlets 12 can be cleaned at one time when the brush 24 moves in an arc shape. A metal mesh is provided on the air outlet 12, and the metal mesh can effectively prevent flying dust from clogging the air outlet 12 during coal transportation.

[0039] One end of the gas pipe 30 is sealed, and the other end is connected to the output end of the gas pump 70. The gas pipe 30 is fixed on the air intake pipe 14 and communicated with the inside of the air intake pipe 14. The air intake end of the gas pump 70 is connected to the air pipe storing the fire extinguishing gas. The fire extinguishing gas in the gas tank is extracted and transported to each air intake pipe 14 through the gas pipe 30.

[0040] The sensor assembly 50 includes a gas sensor 51 and a temperature sensor 52, which are respectively fixed on the inner side of the fire extinguishing box 11 and are used to measure the specific gas concentration and temperature on the surface of the conveyor belt 80. An inverted U-shaped protective plate 53 is provided on the inner side of the fire extinguishing box 11. The gas sensor 51 and the temperature sensor 52 are located inside the protective plate 53. The gas sensor 51 adopts a carbon dioxide concentration sensor. The inverted U-shaped protective plate 53 can prevent dust from falling on the surface of the gas sensor 51 and the temperature sensor 52.

[0041] The control module 60 includes a microcontroller 61, which is based on an STM32 single-chip embedded development board. The microcontroller 61 is electrically connected to a gas sensor 51 and a temperature sensor 52, and is used to receive data measured by the gas sensor 51 and the temperature sensor 52. The gas sensor 51 and the temperature sensor 52 are electrically connected to the microcontroller 61 through an I / O port. The temperature sensor 52 uses a temperature sensor of model DS18B20, and the gas sensor 51 uses a carbon dioxide concentration sensor of model SLS133EE.

[0042] The electric telescopic rod 42 is electrically connected to the motor drive module 62, and the motor drive module 62 is electrically connected to the microcontroller 61. The microcontroller 61 drives the electric telescopic rod 42 to extend and retract through the motor drive module 62. The electric telescopic rod 42 adopts an electric push rod of model MNTL, and the motor drive module 62 adopts a drive module of model L298N. The microcontroller 61 sends a control signal to drive the DC motor inside the electric telescopic rod 42 through the L298N drive module, so that it rotates forward and reversely to complete the extension and retraction of the electric telescopic rod 42.

[0043] A solenoid valve 15 is provided on the air intake pipe 14 on the outside of the fire extinguishing box 11, and the solenoid valve 15 controls whether the corresponding fire extinguishing box 10 sprays fire extinguishing gas. The solenoid valve 15 is electrically connected to the solenoid valve driving module 63, and the solenoid valve driving module 63 is electrically connected to the microcontroller 61. The microcontroller 61 drives the solenoid valve 15 to open and close through the solenoid valve driving module 63. The solenoid valve driving module 63 adopts a driving module model CA16A produced by Macrowis.

[0044] The use principle of the utility model is as follows: the fire extinguishing box 10 is respectively installed on both sides of the conveyor belt 80 through the fixing frame, and the fire extinguishing box 10 is symmetrically arranged beside the conveyor belt 80. When a fire occurs on the conveyor belt 80, the temperature and the carbon dioxide concentration increase. The temperature and the carbon dioxide concentration are collected by the gas sensor 51 and the temperature sensor 52 for judgment. When the microcontroller 61 determines that a fire occurs on the conveyor belt, the solenoid valve 15 is controlled to open. At this time, the gas delivery pump 70 extracts the fire extinguishing gas in the gas tank and delivers it to each air inlet pipe 14 through the gas delivery pipe 30. The fire extinguishing gas is ejected from the gas outlet 12, thereby covering the surface of the conveyor belt 80 to play a role in extinguishing the fire.

[0045] The electric telescopic rod 42 is extended and retracted under the drive of the microcontroller 61, driving all the rotating rods 22 on one side to rotate, and the brush 24 rotates closely against the inner wall of the fire extinguishing box 11, which can clean the air outlet 12 during rotation, effectively preventing the flying dust from clogging the air outlet 12.

[0046] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic jet fire extinguishing device for a mining belt conveyor, characterized in that: include: A fire extinguishing box (10), the fire extinguishing box (10) being arranged on both sides of the conveyor belt (80), and the fire extinguishing boxes (10) on both sides of the conveyor belt (80) being arranged opposite to each other, the fire extinguishing box (10) comprising a hollow fire extinguishing box (11), an air outlet (12) being arranged on the inner side surface of the fire extinguishing box (11) close to the conveyor belt (80), a fixing frame (13) being fixed on the side surface of the fire extinguishing box (11) at the bottom of the air outlet (12) for fixing on the conveyor belt (80), and an air inlet pipe (14) being arranged on the outer side of the fire extinguishing box (11) and communicating with the interior of the fire extinguishing box (11); A cleaning mechanism (20), the cleaning mechanism (20) comprising a rotating rod (22) arranged inside the fire extinguishing box (11), a hinge seat (21) being fixed to the upper end of the fire extinguishing box (11), a middle portion of the rotating rod (22) being hinged to the hinge seat (21), a cleaning plate (23) being fixed to the lower end, and a brush (24) being fixed to the side of the cleaning plate (23) close to the fire extinguishing box (11); an air delivery pipe (30), one end of the air delivery pipe (30) being sealed and the other end being connected to the output end of the air delivery pump (70); the air delivery pipe (30) being fixed to the air intake pipe (14) and being in communication with the interior of the air intake pipe (14); A mounting seat assembly (40), the mounting seat assembly (40) being arranged on both sides of the conveyor belt (80), comprising a mounting seat (41); a fixing frame (13) being fixed to the bottom of the mounting seat (41) for fixing the mounting seat (41) on the conveyor belt (80); and a control module (60) being fixed to the outer side of the mounting seat (41); A sensor assembly (50), the sensor assembly (50) comprising a gas sensor (51) and a temperature sensor (52), which are respectively fixed on the inner side of the fire extinguishing box (11) and are used to measure the specific gas concentration and temperature on the surface of the conveyor belt (80); The control module (60) comprises a microcontroller (61), and the microcontroller (61) is electrically connected to the gas sensor (51) and the temperature sensor (52), and is used to receive data measured by the gas sensor (51) and the temperature sensor (52).

2. The automatic jet fire extinguishing device for a mining belt conveyor according to claim 1 is characterized in that: At least two groups of fire extinguishing boxes (10) are fixed on each side of the conveyor belt (80), and a push hinge seat (25) is fixed on the upper end of the rotating rod (22). The push hinge seat (25) on each side of the conveyor belt (80) is connected via a linkage rod (26) parallel to the conveyor belt, one end of the linkage rod (26) is hinged to one end of the electric telescopic rod (42), and the other end of the electric telescopic rod (42) is hinged to the inner side of the mounting seat (41).

3. The automatic jet fire extinguishing device for a mining belt conveyor according to claim 2 is characterized in that: The electric telescopic rod (42) is electrically connected to a motor drive module (62), the motor drive module (62) is electrically connected to a microcontroller (61), and the microcontroller (61) drives the electric telescopic rod (42) to extend and retract via the motor drive module (62).

4. The automatic jet fire extinguishing device for a mining belt conveyor according to claim 1 is characterized in that: An electromagnetic valve (15) is provided on the air intake pipe (14) outside the fire extinguisher box (11); the electromagnetic valve (15) is electrically connected to an electromagnetic valve driving module (63); the electromagnetic valve driving module (63) is electrically connected to a microcontroller (61); and the microcontroller (61) drives the electromagnetic valve (15) to open and close via the electromagnetic valve driving module (63).

5. The automatic jet fire extinguishing device for a mining belt conveyor according to claim 1 is characterized in that: A plurality of air outlet holes (12) are evenly arranged on the inner side surface of the fire extinguishing box (11) and are distributed in an arc shape. The circular shape of the air outlet holes (12) distributed in the arc shape is located on the hinge axis of the rotating rod (22) and the hinge seat (21). A metal mesh is arranged on the air outlet holes (12).

6. The automatic jet fire extinguishing device for a mining belt conveyor according to claim 1 is characterized in that: An inverted U-shaped protective plate (53) is provided on the inner side of the fire extinguishing box (11); the gas sensor (51) and the temperature sensor (52) are located inside the protective plate (53); and the gas sensor (51) is a carbon dioxide concentration sensor.

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