Coal mine fire early warning device

Abstract

The utility model discloses a coal mine fire early warning device which comprises an installation plate, a device shell, a fixing clamping plate, a filter screen, a fan, a motor, a connecting rod and a cleaning ring, a spring column is installed on the installation plate, the other end of the spring column is provided with the fixing clamping plate, and an insertion block installed on the fixing clamping plate is matched with an insertion groove formed in the device shell. A filter screen is installed on an air inlet window formed in the device shell, a motor is installed in the device shell, a gear is installed at the power shaft end of the motor, the gear is meshed with a toothed plate in the device shell, a connecting rod is installed on the toothed plate, and one end of the connecting rod is connected with a cleaning ring. The situation that the whole device needs to be disassembled when the device is overhauled is avoided, the device is more convenient to overhaul, dust accumulated on the filter screen can be brushed away, and the problem that detection is not timely due to the fact that a filter structure on the fire early warning device is blocked and flue gas enters is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mine fire early warning devices, in particular to a coal mine fire early warning device. Background Art

[0002] Coal mine fire refers to any uncontrolled combustion that occurs in the mine or on the ground and threatens the safety of production underground and causes losses. According to the different ignition sources, mine fires are divided into internal fires and external fires. Mine fires and coal dust and methane explosions are often causally related and are one of the causes of serious accidents in coal mines. Fires are prone to occur in ventilated areas such as goafs in coal mines, causing landslides. Therefore, coal mine fire warning devices are currently installed in mines.

[0003] After searching, Chinese utility model patent CN218332802U discloses a fixed fire warning device for underground coal mines, including a box body, a warning module is detachably arranged in the box body, and a smoke sensor is arranged on the outer wall of the bottom plate of the box body; the warning module includes a shell, a partition is horizontally arranged in the shell, and the partition divides the inner cavity of the shell into an upper warning cavity and a lower detection cavity, and a controller and a temperature sensor and an alarm electrically connected to the controller are arranged on the inner wall of the warning cavity, and the controller is electrically connected to the smoke sensor; a push plate is horizontally arranged in the detection cavity, and the push plate moves vertically along the detection cavity; a switch is arranged on the side surface of the partition close to the detection cavity, and the alarm is electrically connected to the switch. The utility model realizes the double insurance of fire alarm, greatly improves the reliability and detection sensitivity of fire monitoring and warning, and effectively reduces the occurrence of false alarms and missed alarms.

[0004] The technical solution in the application document still has shortcomings: since there will be a large amount of dust in the mine, the filtering structure on the fire warning device is prone to blockage, affecting the entry of smoke and causing untimely detection. After the fire warning device is installed and fixed, when the device needs to be repaired, the entire equipment needs to be removed, making the maintenance of the device more troublesome. Utility Model Content

[0005] The purpose of the utility model is to provide a coal mine fire early warning device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a coal mine fire warning device, comprising a mounting plate, a device housing, a fixed splint, a filter, a fan, a motor, a connecting rod and a cleaning ring, a spring column is mounted on the mounting plate, a fixed splint is mounted on the other end of the spring column, an insert block mounted on the fixed splint fits in a slot provided on the device housing, a filter is mounted on an air intake window provided on the device housing, a motor is mounted in the device housing, a gear is mounted on the end of the motor power shaft, the gear is meshed with a toothed plate in the device housing, a connecting rod is mounted on the toothed plate, and one end of the connecting rod is connected to the cleaning ring.

[0007] By adopting the above technical solution, the mounting plate is fixed to the place of use by bolts, and the two sets of fixing clamps are used in conjunction with the spring columns to clamp and fix the device casing. The fixing clamps are moved to remove the device casing for maintenance, avoiding the need to remove the entire device when repairing the device, making the maintenance of the device more convenient. When the fan is started, the smoke enters from the air inlet window opened on the device casing, and will pass through the filter to filter out dust particles. When a lot of dust accumulates on the filter, the gear is driven by the starting motor to rotate forward and reverse, and the toothed plate and connecting rod meshing with it are used to drive the cleaning ring to move up and down. The cleaning brush installed on the inner ring wall of the cleaning ring can brush off the dust accumulated on the filter, avoiding the problem of clogging of the filtering structure on the fire warning device affecting the entry of smoke and causing untimely detection.

[0008] Preferably, a cleaning ring is mounted on the device housing at the filter screen, a cleaning brush is mounted on the inner ring wall of the cleaning ring, and one end of the cleaning brush is in close contact with the filter screen.

[0009] By adopting the above technical solution, the cleaning brush installed on the inner ring wall of the cleaning ring can clean off the dust accumulated on the filter net.

[0010] Preferably, a fan is installed in the device housing, and the fan is powered by a fan motor.

[0011] By adopting the above technical solution, the fan motor drives the fan to rotate, so that smoke enters the device casing, making it easier for the fire warning device to detect the smoke content in the air.

[0012] Preferably, a ventilation window is provided on the housing of the device, and a filter is provided at the ventilation window.

[0013] By adopting the above technical solution, the fire warning device is kept ventilated smoothly, and the filter at the ventilation window prevents dust from entering the device.

[0014] Preferably, a smoke sensor and an alarm light are installed on the device housing.

[0015] By adopting the above technical solution, the smoke sensor can detect the smoke concentration in the air, and the concentration data is transmitted to the controller for comparison. When it is greater than the preset value, the alarm light is triggered.

[0016] Preferably, a fixing block is installed on the mounting plate, and a bolt is installed on the fixing block.

[0017] By adopting the above technical solution, the mounting plate can be fixed at the place of use by means of the fixing block and the bolts.

[0018] Preferably, the motor is a bidirectional motor, and an external power cord is installed on the device housing.

[0019] Compared with the prior art, the beneficial effects of the utility model are: avoiding the need to dismantle the entire device when repairing the device, making the maintenance of the device more convenient, and being able to clean off the dust accumulated on the filter net, avoiding the problem of clogging of the filter structure on the fire warning device affecting the entry of smoke and causing untimely detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0021] Figure 2 It is a front view structural schematic diagram of the utility model.

[0022] Figure 3 It is a schematic diagram of the cross-sectional structure of the utility model.

[0023] Figure 4 It is a schematic diagram of the cleaning structure of the utility model.

[0024] In the figure: 1. Mounting plate; 2. Device housing; 3. Spring column; 4. Fixing clamp; 5. Filter; 6. Fan; 7. Smoke sensor; 8. Motor; 9. Gear; 10. Tooth plate; 11. Connecting rod; 12. Cleaning ring; 13. Cleaning brush; 14. Alarm light. DETAILED DESCRIPTION

[0025] 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.

[0026] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4, including a mounting plate 1, a device housing 2, a fixing splint 4, a filter 5, a fan 6, a motor 8, a connecting rod 11 and a cleaning ring 12, wherein a spring column 3 is mounted on the mounting plate 1, a fixing splint 4 is mounted on the other end of the spring column 3, a plug mounted on the fixing splint 4 is matched with a slot provided on the device housing 2, a filter 5 is mounted on the air intake window provided on the device housing 2, a motor 8 is mounted in the device housing 2, a gear 9 is mounted on the power shaft end of the motor 8, the gear 9 is meshed with a toothed plate 10 in the device housing 2, a connecting rod 11 is mounted on the toothed plate 10, one end of the connecting rod 11 is connected to a cleaning ring 12, the mounting plate 1 is fixed at the place of use by bolts, and cooperates with the spring column 3 The two groups of fixing clamps 4 are used to clamp and fix the device housing 2. The fixing clamps 4 are moved to remove the device housing 2 for maintenance, which avoids the need to dismantle the entire device when repairing the device, making the maintenance of the device more convenient. When the fan 6 is started, the smoke enters from the air intake window opened on the device housing 2, and will pass through the filter 5 to filter the dust particles. When the dust on the filter 5 accumulates a lot, the gear 9 is driven by the starting motor 8 to rotate forward and reverse, and the toothed plate 10 and the connecting rod 11 engaged with it are cooperated to drive the cleaning ring 12 to move up and down. The cleaning brush 13 installed on the inner ring wall of the cleaning ring 12 can brush off the dust accumulated on the filter 5, thereby avoiding the problem that the filtering structure on the fire warning device is blocked and affects the entry of smoke, resulting in untimely detection.

[0027] Reference Figure 1 , Figure 3 , Figure 4 A cleaning ring 12 is mounted on the device housing 2 at the filter 5, and a cleaning brush 13 is installed on the inner ring wall of the cleaning ring 12. One end of the cleaning brush 13 is in close contact with the filter 5. The cleaning brush 13 installed on the inner ring wall of the cleaning ring 12 can brush off the dust accumulated on the filter 5. A fan 6 is installed in the device housing 2. The fan 6 is powered by a fan motor. The fan motor drives the fan 6 to rotate, so that smoke enters the device housing 2, which is convenient for the fire warning device to detect the smoke content in the air.

[0028] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4, a ventilation window is provided on the device housing 2, and a filter is provided at the ventilation window to keep the fire warning device ventilated smoothly. The filter at the ventilation window prevents dust from entering the device. A smoke sensor 7 and an alarm light 14 are installed on the device housing 2. The smoke sensor 7 can detect the smoke concentration in the air, and the concentration data is transmitted to the controller for comparison. When it is greater than a preset value, the alarm light 14 is triggered to work. A fixing block is installed on the mounting plate 1, and a bolt is installed on the fixing block. The mounting plate 1 can be fixed at the place of use by the fixing block and the bolt. The motor 8 is a bidirectional motor, and an external power cord is installed on the device housing 2. The circuit module and smoke detection device involved in this application are all existing mature technologies, and there are many products on the market. The protection content of this application does not involve improvements to software and smoke detection methods, so the principle of the fire warning device is not described in detail here.

[0029] The implementation principle of a coal mine fire warning device in the embodiment of the present application is as follows: the mounting plate 1 is fixed at the place of use by bolts, and the two sets of fixing clamps 4 are used in conjunction with the spring column 3 to clamp and fix the device housing 2. The fixing clamps 4 are moved to remove the device housing 2 for maintenance, so as to avoid the need to remove the entire device when repairing the device, making the maintenance of the device more convenient. When the fan 6 is started, the smoke enters from the air intake window opened on the device housing 2, and will pass through the filter 5 to filter dust particles. The filtered smoke passes through the smoke sensor 7 to detect the smoke concentration in the air, and the concentration data is transmitted to the controller for comparison. When it is greater than the preset value, the alarm light 14 is triggered to work. When the dust on the filter 5 accumulates more, the gear 9 is driven to rotate forward and reverse by starting the motor 8, and the toothed plate 10 and the connecting rod 11 meshed therewith are used to drive the cleaning ring 12 to move up and down. The cleaning brush 13 installed on the inner ring wall of the cleaning ring 12 can clean and brush away the dust accumulated on the filter 5, so as to avoid the problem that the filtering structure on the fire warning device is blocked and affects the entry of smoke and causes the detection to be untimely.

[0030] 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. A coal mine fire warning device, comprising a mounting plate (1), a device housing (2), a fixing clamp (4), a filter screen (5), a fan (6), a motor (8), a connecting rod (11) and a cleaning ring (12), characterized in that: A spring column (3) is mounted on the mounting plate (1), a fixing clamp (4) is mounted on the other end of the spring column (3), an insert block mounted on the fixing clamp (4) fits into a slot provided on the device housing (2), a filter screen (5) is mounted on an air intake window provided on the device housing (2), a motor (8) is mounted in the device housing (2), a gear (9) is mounted on the power shaft end of the motor (8), the gear (9) meshes with a toothed plate (10) in the device housing (2), a connecting rod (11) is mounted on the toothed plate (10), one end of the connecting rod (11) is connected to a cleaning ring (12).

2. A coal mine fire early warning device according to claim 1, characterized in that: A cleaning ring (12) is sleeved on the device housing (2) at the filter screen (5), and a cleaning brush (13) is mounted on the inner ring wall of the cleaning ring (12), with one end of the cleaning brush (13) in close contact with the filter screen (5).

3. A coal mine fire early warning device according to claim 1, characterized in that: A fan (6) is installed in the device housing (2), and the fan (6) is powered by a fan motor.

4. A coal mine fire early warning device according to claim 1, characterized in that: A ventilation window is provided on the device housing (2), and a filter is provided at the ventilation window.

5. A coal mine fire early warning device according to claim 1, characterized in that: A smoke sensor (7) is mounted on the device housing (2), and an alarm light (14) is mounted on the device housing (2).

6. A coal mine fire early warning device according to claim 1, characterized in that: A fixing block is mounted on the mounting plate (1), and a bolt is mounted on the fixing block; the motor (8) is a bidirectional motor, and an external power line is mounted on the device housing (2).

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