Automatic control device for air door

Abstract

The invention relates to the technical field of mine laneway air door control, in particular to an automatic air door control device. According to the automatic control device for the air door, different passing schemes can be provided according to different passing requirements of pedestrians, equipment, monorail hoists and the like in a coal mine tunnel, the underground transportation efficiency of a coal mine is improved, and the safety of operators is guaranteed. An air door automatic control device comprises a mounting frame, limiting frames and the like, and the limiting frames are connected to the lower sides of the left portion and the right portion of the mounting frame. The first motor is started to open the first air door so that large equipment can pass through, the second motor is started to open the second air door so that pedestrians can pass through, and meanwhile, the monorail hoist can pass through the rail, so that different passing schemes can be provided according to different passing requirements of the pedestrians, the equipment, the monorail hoist and the like in the coal mine tunnel; and the underground transportation efficiency of the coal mine is improved, and the safety of operators is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of mine tunnel air door control, and in particular to an automatic air door control device. Background Art

[0002] In the modern coal mine operating environment, with the continuous advancement of mining technology and the increasing complexity of underground operations, the requirements for mine ventilation systems and their supporting facilities are also increasing. In particular, for the diversity of underground transportation systems, such as the widespread use of monorail cranes, the daily passage of pedestrians and the frequent movement of large equipment, traditional damper control devices can no longer meet the dual requirements of safety and efficiency of these different passage subjects.

[0003] Most of the existing damper control devices in coal mines can only achieve single or limited traffic mode control and lack flexibility and adaptability. For example, some dampers are designed for pedestrians and have a simple opening method but cannot withstand the weight and impact of large equipment, while others are designed for vehicle traffic. Although they have a strong structure, they open and close slowly and are not convenient for pedestrians. In addition, monorail cranes are important trackless transportation equipment underground in coal mines. Their special operation mode and track restrictions also put higher requirements on damper control devices.

[0004] Therefore, an automatic damper control device is now developed that can provide different traffic plans according to the different traffic needs of pedestrians, equipment and monorail cranes in the coal mine tunnel, improve the transportation efficiency underground in the coal mine, and ensure the safety of operators. Summary of the invention

[0005] In order to overcome the disadvantage that the existing coal mine damper control device cannot flexibly adjust the traffic plan according to the different traffic requirements in the coal mine tunnel, resulting in low transportation efficiency in the coal mine, the present invention provides a damper automatic control device that can provide different traffic plans according to the different traffic requirements of pedestrians, equipment and monorail cranes in the coal mine tunnel, thereby improving the transportation efficiency in the coal mine and ensuring the safety of operators.

[0006] The technical implementation scheme of the present invention is: an automatic damper control device, including a mounting frame, a limit frame and a control mechanism, the lower sides of the left and right parts of the mounting frame are connected to the limit frames, and the limit frames are provided with a control mechanism that can flexibly adjust the damper passage plan.

[0007] Optionally, a control mechanism is also included, which includes a first motor, a first rotating frame, a first air door, an infrared sensor, a second motor, a second rotating frame and a second air door, two left and right first motors are connected to the upper and lower sides of the front of the limit frame, and the left and right sides of the limit frame are rotatably connected to the upper and lower first rotating frames, the first rotating frames are connected to adjacent first motor output shafts, and first air doors are connected between adjacent first rotating frames, an infrared sensor is connected to the front side of the upper part of the mounting frame, the second motor is connected to the front sides of the first air doors, the second rotating frame is connected to the second motor output shaft, the second rotating frame is connected to the second air door, and the second air door is in contact with the adjacent first air door, and the second motor is started to rotate the second rotating frame to rotate the second air door to rotate and open, and after the pedestrian passes, the second motor is started again to close the second air door again, and when large equipment needs to pass, the first motor can be started to rotate the first rotating frame, driving the first air door to rotate and open.

[0008] Optionally, a transparent observation window is provided on the second air door.

[0009] Optionally, a sealing mechanism is also included, which includes a fixed seat, an electric push rod, a moving block, a sealing block and a fixing piece. The front side of the middle part of the first damper is connected to the fixed seat, the electric push rod is connected to the fixed seat, the moving block is connected to the telescopic end of the electric push rod, the moving blocks are slidably connected to the adjacent first damper, and the sealing block is detachably connected to the upper side of the moving block through two left and right fixing pieces. Starting the electric push rod on the fixed seat pushes out the telescopic end of the electric push rod, drives the moving blocks to approach each other, and makes the sealing blocks approach each other, so that the gap between the track of the monorail crane and the first damper is sealed by the sealing block.

[0010] Optionally, an auxiliary mechanism is also included, which includes a guide frame, a slider, a pressure spring, a rocker rod and a connecting block. The upper rear side of the first damper is connected to a guide frame, and a slider is slidably connected to the guide frame. The sliders are connected to adjacent guide frames via pressure springs. The rear side of the second damper is connected to a connecting block, and the connecting block is rotatably connected to adjacent sliders via a rocker rod. When the second motor is started to rotate and open the second damper, the slider slides to both ends on the guide frame, and the pressure spring is squeezed and contracted, causing the rocker rod to rotate between the connecting block and the slider, so that the second damper can be opened and closed normally.

[0011] Optionally, the sealing blocks are provided with I-shaped grooves adapted to the size of the monorail crane.

[0012] Optionally, a pressure relief mechanism is also included, which includes a baffle, a pressure relief plate, a torsion spring and a locking block. The front side of the upper part of the first damper is connected to the baffle, and the baffle is rotatably connected to the pressure relief plate. The pressure relief plate and the adjacent baffles have torsion springs. The upper part of the first damper is also connected to a locking block, and the locking blocks are located above the adjacent baffles. The locking blocks are engaged with the adjacent torsion springs. The electric push rod on the fixed seat is started to push out the telescopic end of the electric push rod, driving the moving blocks to approach each other, so that the sealing blocks are approached to each other, thereby sealing the gap between the track of the monorail crane and the first damper through the sealing block.

[0013] Optionally, pressure relief holes are provided on both the pressure relief plate and the baffle.

[0014] Optionally, a dust reduction mechanism is also included, which includes a support block, a connecting pipe and a nozzle. The mounting frame is connected to left and right support blocks on both sides of the front and rear. Adjacent support blocks are connected with connecting pipes, and multiple nozzles are connected to the connecting pipes. The connecting pipes on the support blocks are connected to the water spray pipes so that water flows into the connecting pipes and is then sprayed from the nozzles near the first air gate and the second air gate.

[0015] Optionally, a monitoring mechanism is also included, which includes a support plate, a gas monitor and an alarm light. The support plate is connected to the front side of the middle part of the second damper, the front sides of the support plates are connected to the gas monitors, and the sides of the support plates away from each other are connected to the alarm lights. The gas monitor on the support plate is started to monitor the air near the first damper and the second damper. When it is detected that the harmful gas in the air exceeds the standard, the alarm light is controlled to sound an alarm.

[0016] The beneficial effects of the present invention are: 1. The present invention starts the first motor to open the first damper to facilitate the passage of large equipment, starts the second motor to open the second damper to allow pedestrians to pass, and allows the monorail crane to pass on the track at the same time, thereby achieving the effect of providing different traffic plans according to the different traffic needs of pedestrians, equipment and monorail cranes in the coal mine tunnel, improving the transportation efficiency underground in the coal mine, and ensuring the safety of workers.

[0017] 2. The present invention starts the electric push rod on the fixed seat to push out the telescopic end of the electric push rod, driving the moving blocks to approach each other, so that the sealing blocks are close to each other, thereby sealing the gap between the track of the monorail crane and the first air door through the sealing block, thereby achieving the effect of facilitating the passage of the monorail crane while maintaining the sealing of the air door and facilitating the control of the airflow in the lane.

[0018] 3. The present invention requires opening the first damper to allow large equipment to pass through, starting the first motor, and rotating the first damper. Since the slider is pressed against the guide frame, the second damper rotates along with the first damper, driving the rocker arm and the connecting block to rotate, so that the second damper can be opened in conjunction with the first damper, thereby assisting the second damper to open and close in conjunction with the first damper, and improving the opening and closing efficiency of the first damper and the second damper.

[0019] 4. The present invention starts the electric push rods to move away from each other so that the monorail crane can pass, thereby driving the moving block to move the backlog pressure relief plate to rotate, and the torsion spring is deformed, so that the pressure relief plate and the pressure relief hole on the baffle are aligned, thereby achieving the effect of automatically relieving pressure in the tunnel, saving manpower, and facilitating control.

[0020] 5. The present invention connects the connecting pipe on the support block with the water spray pipe so that water flows into the connecting pipe and is then sprayed from the nozzle near the first air gate and the second air gate, thereby achieving the effect of reducing dust in the area near the air gate through the nozzle and preventing dust from affecting the workers.

[0021] 6. The present invention enables the gas monitor to monitor the air near the first damper and the second damper. When it is detected that the harmful gas in the air exceeds the standard, the alarm light is controlled to alarm, reminding relevant personnel to deal with it in time, thereby achieving the effect of being able to monitor and alarm the air near the first damper and the second damper, and avoiding excessive concentration of harmful gases that endangers the safety of workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0023] Figure 2 It is a schematic diagram of the three-dimensional structure of the rear view part of the present invention.

[0024] Figure 3 It is a partial three-dimensional structural schematic diagram of the present invention.

[0025] Figure 4 It is a schematic diagram of the three-dimensional structure of the control mechanism of the present invention.

[0026] Figure 5 It is a partial three-dimensional structural schematic diagram of the sealing mechanism of the present invention.

[0027] Figure 6 It is a schematic diagram of the three-dimensional structure of the auxiliary mechanism part of the present invention.

[0028] Figure 7 It is a schematic diagram of the three-dimensional structure of the first part of the pressure relief mechanism of the present invention.

[0029] Figure 8 It is a schematic diagram of the three-dimensional structure of the second part of the pressure relief mechanism of the present invention.

[0030] Fig. 9 It is a partial three-dimensional structural schematic diagram of the dust reduction mechanism of the present invention.

[0031] Fig.10 It is a schematic diagram of a partial three-dimensional structure of the monitoring mechanism of the present invention.

[0032] Markings in the accompanying drawings: 1: mounting frame, 2: limiting frame, 3: control mechanism, 31: first motor, 32: first rotating frame, 33: first air door, 34: infrared sensor, 35: second motor, 36: second rotating frame, 37: second air door, 4: sealing mechanism, 41: fixing seat, 42: electric push rod, 43: moving block, 44: sealing block, 45: fixing part, 5: auxiliary mechanism, 51: guide frame, 52: slider, 53: pressure spring, 54: rocker arm, 55: connecting block, 6: pressure relief mechanism, 61: baffle, 62: pressure relief plate, 63: torsion spring, 64: positioning block, 7: dust reduction mechanism, 71: support block, 72: connecting pipe, 73: nozzle, 8: monitoring mechanism, 81: support plate, 82: gas monitor, 83: alarm light. DETAILED DESCRIPTION

[0033] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0034] A damper automatic control device, such as Figure 1-Figure 3 As shown, it includes a mounting frame 1, a limiting frame 2, and a control mechanism 3. The lower sides of the left and right parts of the mounting frame 1 are connected to the limiting frame 2, and the limiting frame 2 is provided with the control mechanism 3.

[0035] like Figure 1 and Figure 4 As shown, it also includes a control mechanism 3, which includes a first motor 31, a first rotating frame 32, a first damper 33, an infrared sensor 34, a second motor 35, a second rotating frame 36 and a second damper 37. The upper front side of the limiting frame 2 is connected to the left and right first motors 31, and the left and right parts of the limiting frame 2 are rotatably connected to the upper and lower first rotating frames 32. The first rotating frames 32 are connected to the output shafts of the adjacent first motors 31, and the first dampers 33 are connected between the adjacent first rotating frames 32. The front side of the upper part of the mounting frame 1 is connected to the infrared sensor 34, and the front sides of the first dampers 33 are connected to the second motors 35, and the second motors 35 are connected to the output shafts of the second motors 35. The second rotating frames 36 are connected to the second dampers 37, and the second dampers 37 are provided with transparent observation windows for easy observation. The second dampers 37 are in contact with the adjacent first dampers 33.

[0036] When using the present invention, firstly, the mounting frame 1 and the limiting frame 2 are installed at the air door use position in the coal mine tunnel, so that the first air door 33 and the second air door 37 are closed to regulate the airflow in the tunnel. When pedestrians need to pass through, the second motor 35 can be started to rotate the second rotating frame 36 to rotate and open the second air door 37. After the pedestrians pass through, the second motor 35 is started again to close the second air door 37 again. When large equipment needs to pass through, the first motor 31 can be started to rotate the first rotating frame 32 to drive the first air door 37 to rotate and open. 3 is rotated to open, and at the same time, the second air door 37 is also rotated to open, so that large equipment can pass through. At the same time, the gap between the first air door 33 is convenient for the track of the monorail crane to be erected. When the infrared sensor 34 detects that the monorail crane needs to pass, it can control the start of the first motor 31 to open the first air door 33, and then the monorail crane can pass through. In this way, different passage plans can be provided according to the different passage needs of pedestrians, equipment and monorail cranes in the coal mine tunnel, thereby improving the transportation efficiency underground in the coal mine and ensuring the safety of operators.

[0037] like Figure 1 and Figure 5 As shown, a sealing mechanism 4 is also included, and the sealing mechanism 4 includes a fixed seat 41, an electric push rod 42, a moving block 43, a sealing block 44 and a fixing piece 45. The front side of the middle part of the first damper 33 is connected to the fixed seat 41, the electric push rod 42 is connected to the fixed seat 41, and the moving block 43 is connected to the telescopic end of the electric push rod 42. The moving blocks 43 are slidably connected to the adjacent first damper 33, and the upper side of the moving blocks 43 is detachably connected to the sealing blocks 44 through two left and right fixing pieces 45. The sealing blocks 44 are provided with I-shaped grooves that adapt to the size of the monorail crane.

[0038] The sealing mechanism 4 of the device can be used to seal the air door in the tunnel. After the installation of the mounting frame 1 is completed, the electric push rod 42 on the fixing seat 41 is started to push out the telescopic end of the electric push rod 42, driving the moving blocks 43 to approach each other, so that the sealing blocks 44 are approached to each other, thereby sealing the gap between the track of the monorail crane and the first air door 33 through the sealing block 44 to avoid affecting the sealing of the air door. When the monorail crane needs to pass, the electric push rod 42 can be started to move the sealing blocks 44 away from each other, and then the first motor 31 can be started to rotate and open the first air door 33 to allow the monorail crane to pass, thereby facilitating the passage of the monorail crane while maintaining the sealing of the air door and facilitating the control of the airflow in the tunnel. When it is necessary to adapt to monorail crane tracks of different sizes, the sealing block 44 can be disassembled and replaced through the fixing member 45.

[0039] like Figure 1 and Figure 6As shown, an auxiliary mechanism 5 is also included, and the auxiliary mechanism 5 includes a guide frame 51, a slider 52, a pressure spring 53, a rocker rod 54 and a connecting block 55. The upper rear side of the first damper 33 is connected to the guide frame 51, and the slider 52 is slidably connected to the guide frame 51. The slider 52 is connected to the adjacent guide frame 51 through a pressure spring 53. The rear side of the second damper 37 is connected to the connecting block 55, and the connecting block 55 is rotatably connected to the adjacent slider 52 through a rocker rod 54.

[0040] The auxiliary mechanism 5 of the device can assist the second damper 37 to be linked when the first damper 33 is opened. After the mounting frame 1 is installed, the slider 52 is pressed against the guide frame 51 under the action of the pressure spring 53. When the second motor 35 is started to rotate and open the second damper 37, the slider 52 slides to both ends on the guide frame 51, and the pressure spring 53 is squeezed and contracted, so that the swing rod 54 rotates between the connecting block 55 and the slider 52, so that the second damper 37 can be opened and closed normally, but it is necessary to The first damper 33 is opened to allow large equipment to pass through, and the first motor 31 is started to rotate the first damper 33. Since the slider 52 is pressed against the guide frame 51, the second damper 37 rotates with the first damper 33, driving the swing rod 54 and the connecting block 55 to rotate, so that the second damper 37 can be opened in conjunction with the first damper 33, thereby assisting the second damper 37 to open and close in conjunction with the first damper 33, thereby improving the opening and closing efficiency of the first damper 33 and the second damper 37.

[0041] like Figure 1 , Figure 7 and 8 As shown, a pressure relief mechanism 6 is also included, and the pressure relief mechanism 6 includes a baffle 61, a pressure relief plate 62, a torsion spring 63 and a blocking block 64. The baffle 61 is connected to the front side of the upper part of the first damper 33, and the baffle 61 is rotatably connected to the pressure relief plate 62. Pressure relief holes are opened on the pressure relief plate 62 and the baffle 61. There are torsion springs 63 between the pressure relief plate 62 and the adjacent baffle 61. A blocking block 64 is also connected to the upper part of the first damper 33. The blocking blocks 64 are all located above the adjacent baffles 61, and the blocking blocks 64 are engaged with the adjacent torsion springs 63.

[0042] The pressure relief mechanism 6 of the present device can automatically relieve pressure in the coal mine tunnel. When the electric push rods 42 are started to move away from each other to allow the monorail crane to pass, the moving block 43 is driven to move the backlog pressure relief plate 62 to rotate, and the torsion spring 63 is deformed, so that the pressure relief plate 62 is aligned with the pressure relief hole on the baffle 61, so that the tunnel can be automatically depressurized. After the monorail crane has passed, the first damper 33 is closed, and the telescopic end of the electric push rod 42 is controlled to shrink, and the torsion spring 63 is restored, so that the pressure relief plate 62 is rotated, and the pressure relief plate 62 and the baffle 61 are re-sealed. The pressure relief plate 62 can also be manually rotated to make the pressure relief plate 62 and the locking block 64 engage to perform manual pressure relief, thereby automatically relieving pressure in the tunnel, saving manpower, and facilitating control.

[0043] like Figure 1 and Fig. 9 As shown, a dust reduction mechanism 7 is also included, which includes a support block 71, a connecting pipe 72 and a nozzle 73. The mounting frame 1 is connected to two left and right support blocks 71 on both sides of the front and rear, and connecting pipes 72 are connected between adjacent support blocks 71. Five nozzles 73 are connected to the connecting pipes 72.

[0044] The dust reduction mechanism 7 of the device can be used to spray water to reduce dust. When it is necessary to reduce dust on the first damper 33 and the second damper 37, the connecting pipe 72 on the support block 71 can be connected to the water spray pipe, so that water flows into the connecting pipe 72 and is then sprayed from the nozzle 73 near the first damper 33 and the second damper 37. This can reduce dust in the area near the damper through the nozzle 73, thereby preventing dust from affecting the workers.

[0045] like Figure 1 and Fig.10 As shown, a monitoring mechanism 8 is also included, and the monitoring mechanism 8 includes a support plate 81, a gas monitor 82 and an alarm light 83. The support plate 81 is connected to the front side of the middle part of the second damper 37, the front side of the support plate 81 is connected to the gas monitor 82, and the alarm light 83 is connected to the side of the support plate 81 away from each other.

[0046] The monitoring mechanism 8 of the device can detect the air quality in the area near the damper. After the installation of the mounting frame 1 is completed, the gas monitor 82 on the support plate 81 can be started to enable the gas monitor 82 to monitor the air near the first damper 33 and the second damper 37. When it is detected that the harmful gas in the air exceeds the standard, the alarm light 83 is controlled to alarm, reminding relevant personnel to deal with it in time, thereby playing a role in monitoring and alarming the air near the first damper 33 and the second damper 37, and avoiding excessive concentration of harmful gases that endangers the safety of workers.

[0047] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, all equivalent changes made to the contents described in the claims of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A damper automatic control device, characterized in that: The invention comprises a mounting frame (1), a limiting frame (2) and a control mechanism (3); the lower sides of the left and right parts of the mounting frame (1) are both connected to the limiting frame (2); the limiting frame (2) is provided with a control mechanism (3) capable of flexibly adjusting the air door passage scheme.

2. The damper automatic control device according to claim 1, characterized in that: The control mechanism (3) also includes a first motor (31), a first rotating frame (32), a first damper (33), an infrared sensor (34), a second motor (35), a second rotating frame (36) and a second damper (37); the upper front side of the limiting frame (2) is connected to two left and right first motors (31); the left and right sides of the limiting frame (2) are both rotatably connected to two upper and lower first rotating frames (32); the first rotating frames (32) are each connected to an output shaft of an adjacent first motor (31); the adjacent first rotating frames (32) are each connected to a first damper (33); the upper front side of the mounting frame (1) is connected to an infrared sensor (34); A second motor (35) is connected to the front side of each damper (33), a second rotating frame (36) is connected to the output shaft of the second motor (35), a second damper (37) is connected to the second rotating frame (36), and the second damper (37) is in contact with the adjacent first damper (33). When the second motor (35) is started, the second rotating frame (36) is rotated, so that the second damper (37) is rotated and opened. After a pedestrian passes, the second motor (35) is started again, so that the second damper (37) is closed again. When large equipment needs to pass, the first motor (31) can be started, so that the first rotating frame (32) is rotated, driving the first damper (33) to rotate and open.

3. The damper automatic control device according to claim 2, characterized in that: The second air doors (37) are each provided with a transparent observation window.

4. The damper automatic control device according to claim 2, characterized in that: The invention also comprises a sealing mechanism (4), which comprises a fixed seat (41), an electric push rod (42), a moving block (43), a sealing block (44) and a fixing member (45). The front side of the middle part of the first damper (33) is connected to the fixed seat (41), the electric push rod (42) is connected to the fixed seat (41), the telescopic end of the electric push rod (42) is connected to the moving block (43), the moving block (43) is slidably connected to the adjacent first damper (33), the upper side of the moving block (43) is detachably connected to the sealing block (44) through two left and right fixing members (45), the electric push rod (42) on the fixed seat (41) is started, so that the telescopic end of the electric push rod (42) is pushed out, driving the moving blocks (43) to approach each other, so that the sealing blocks (44) are approached each other, so that the gap between the track of the monorail crane and the first damper (33) is sealed by the sealing block (44).

5. The damper automatic control device according to claim 4, characterized in that: The invention also comprises an auxiliary mechanism (5), which comprises a guide frame (51), a slider (52), a pressure spring (53), a swing rod (54) and a connecting block (55). The upper rear side of the first damper (33) is connected to the guide frame (51), the guide frame (51) is slidably connected to the slider (52), the slider (52) and the adjacent guide frame (51) are connected to a pressure spring (53), the rear side of the second damper (37) is connected to the connecting block (55), the connecting block (55) and the adjacent slider (52) are rotatably connected to the swing rod (54), when the second motor (35) is started to rotate and open the second damper (37), the slider (52) slides on the guide frame (51) to both ends, the pressure spring (53) is squeezed and contracted, the swing rod (54) rotates between the connecting block (55) and the slider (52), so that the second damper (37) can be opened and closed normally.

6. The damper automatic control device according to claim 5, characterized in that: The sealing block (44) is provided with an I-shaped groove adapted to the size of the monorail crane.

7. The automatic damper control device according to claim 5, characterized in that: The device also includes a pressure relief mechanism (6), which includes a baffle (61), a pressure relief plate (62), a torsion spring (63) and a stop block (64). The baffle (61) is connected to the front side of the upper part of the first damper (33). The baffle (61) is rotatably connected to the pressure relief plate (62). A torsion spring (63) is provided between the pressure relief plate (62) and the adjacent baffle (61). The upper part of the first damper (33) is also connected to the stop block (64). The positioning blocks (64) are all located above the adjacent baffles (61), and the positioning blocks (64) are all engaged with the adjacent torsion springs (63), and the electric push rod (42) on the fixed seat (41) is started, so that the telescopic end of the electric push rod (42) is pushed out, driving the moving blocks (43) to approach each other, so that the sealing blocks (44) are approached each other, so that the gap between the track of the monorail crane and the first damper (33) is sealed by the sealing block (44).

8. The automatic damper control device according to claim 7, characterized in that: The pressure relief plate (62) and the baffle plate (61) are both provided with pressure relief holes.

9. The automatic damper control device according to claim 7, characterized in that: The dust reduction mechanism (7) also includes a support block (71), a connecting pipe (72) and a nozzle (73). The mounting frame (1) is connected to two left and right support blocks (71) on both sides of the front and rear sides. A connecting pipe (72) is connected between adjacent support blocks (71). A plurality of nozzles (73) are connected to the connecting pipe (72). The connecting pipe (72) on the support block (71) is connected to a water spray pipe so that water flows into the connecting pipe (72) and is then sprayed from the nozzle (73) near the first air door (33) and the second air door (37).

10. The automatic damper control device according to claim 9, characterized in that: The invention also comprises a monitoring mechanism (8), the monitoring mechanism (8) comprising a support plate (81), a gas monitor (82) and an alarm light (83); the middle front side of the second damper (37) is connected to the support plate (81); the front sides of the support plates (81) are connected to the gas monitors (82); the sides of the support plates (81) that are away from each other are connected to the alarm lights (83); the gas monitors (82) on the support plate (81) are activated so that the gas monitors (82) monitor the air near the first damper (33) and the second damper (37); when the harmful gas in the air is detected to exceed the standard, the alarm light (83) is controlled to give an alarm.

Images