Underground safety coal bunker system

Abstract

The invention provides an underground safety coal bunker system which comprises a coal bunker main body, a coal feeder, a coal flow channel, a belt conveyor, a transfer chamber, an operation chamber and a danger avoiding channel, the coal feeder, the coal flow channel and the transfer chamber are all located below the coal bunker main body, the belt conveyor is located below the coal flow channel and the transfer chamber, the coal flow channel is of a circumferential closed structure, and the danger avoiding channel is located below the operation chamber. Coal output by the coal bunker body enters the coal flowing channel through the coal feeder, the coal in the coal flowing channel is input to the position below the belt conveyor, the operation chamber is arranged in the transfer chamber and is separated from the coal flowing channel, the operation chamber is of a closed structure, and the operation chamber is communicated with the danger avoiding channel. By means of the scheme, the coal bunker can be rapidly evacuated to a safe area when the coal bunker breaks, the emergency response speed is increased, the situation that an operator is buried or trapped by flowing coal without response in time is avoided, and the safety of the operator is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of coal mines, and in particular to an underground safety coal bunker system. Background Art

[0002] Coal bunkers are usually set up underground in coal mines to temporarily store the mined coal. Transfer chambers, coal feeders and operating chambers are set up at the bottom of the coal bunker to allow operators to operate coal feeders and other equipment.

[0003] The existing coal feeder outlet is connected to the operating chamber. Once the coal bunker collapses, the coal in the bunker will bury the operators or trap them in the operating chamber, causing certain casualties and posing a safety hazard. Summary of the invention

[0004] The invention provides an underground safety coal bunker system to solve the problem of potential safety hazards caused by the communication between the coal bunker and the operating chamber in the prior art.

[0005] In order to solve the above problems, the present invention provides an underground safe coal bunker system, including a coal bunker body, a coal feeder, a coal flow channel, a belt conveyor, a transfer chamber, an operating chamber and a hazardous passage, the coal feeder, the coal flow channel and the transfer chamber are all located below the coal bunker body, the belt conveyor is located below the coal flow channel and the transfer chamber, the coal flow channel is a circumferentially closed structure, the coal output by the coal bunker body enters the coal flow channel through the coal feeder, the coal in the coal flow channel is input below the belt conveyor, the operating chamber is arranged in the transfer chamber and separated from the coal flow channel, the operating chamber is a closed structure, and the operating chamber is connected to the hazardous passage.

[0006] Furthermore, the bottom wall, the top wall and the surrounding side walls of the operating chamber are all provided with a reinforcing material layer, and the reinforcing material layer includes at least one of steel plates, steel bars, cement and rocks.

[0007] Furthermore, a side wall of the operating chamber is provided with a ventilation opening, and an openable and closable ventilation window is provided at the ventilation opening.

[0008] Furthermore, there are multiple ventilation windows, and the multiple ventilation windows are distributed on a side of the operating chamber facing the coal flow channel and a side of the operating chamber facing the escape channel.

[0009] Furthermore, the ventilation window includes a baffle, a side panel and a hanging plate. The lower edge of the baffle is hinged to the lower edge of the vent. The baffle is connected to the hanging plate through the side panel, and there is an angle between the hanging plate and the baffle. The baffle and the hanging plate are respectively located on both sides of the vent. The baffle is used to open and close the vent. When the baffle is opened, the edge of the hanging plate and the vent abuts to limit the opening angle of the baffle. When the main body of the coal bunker collapses, the flowing coal enters the transfer chamber. When the height of the flowing coal reaches the baffle, the baffle is pushed to close the vent.

[0010] Alternatively, the underground safety coal bunker system also includes a monitoring device and a driving device, the monitoring device is used to monitor whether the coal bunker body has collapsed, and the driving device is used to drive the ventilation windows to open and close, and the monitoring device and the driving device are electrically connected; wherein, when the monitoring device detects that the coal bunker body has collapsed, the driving device drives the ventilation windows to close.

[0011] Furthermore, the monitoring device is a camera or a pressure sensor; the underground safety coal bunker system also includes an alarm device, the monitoring device and the alarm device are electrically connected, and when the monitoring device detects that the coal bunker body has collapsed, the alarm device sends out an alarm message.

[0012] Furthermore, an openable and closable observation hole is provided on the side wall of the operating chamber, and the observation hole faces the coal feeder.

[0013] Furthermore, an openable and closable pedestrian door is provided on the side of the operating chamber away from the coal flow channel, and the pedestrian door is connected to upper and lower stairs, which extend from the pedestrian door to the installation surface of the belt conveyor.

[0014] Furthermore, an operating platform is provided in the operating chamber, and the operating platform is used to control the coal feeder, the belt conveyor and the coal discharge gate of the coal bunker body.

[0015] By applying the technical solution of the present invention, there is provided an underground safe coal bunker system, comprising a coal bunker body, a coal feeder, a coal flow channel, a belt conveyor, a transfer chamber, an operating chamber and a refuge passage, wherein the coal feeder, the coal flow channel and the transfer chamber are all located below the coal bunker body, the belt conveyor is located below the coal flow channel and the transfer chamber, the coal flow channel is a circumferentially closed structure, the coal outputted by the coal bunker body enters the coal flow channel through the coal feeder, the coal in the coal flow channel is input below the belt conveyor, the operating chamber is arranged in the transfer chamber and separated from the coal flow channel, the operating chamber is a closed structure, and the operating chamber is connected to the refuge passage.

[0016] In this scheme, the coal outputted from the main body of the coal bunker through the lower port of the coal bunker enters the coal flow channel through the coal feeder and then enters the belt conveyor. This design can reduce the scattering and loss of coal and improve the transmission efficiency of coal. Moreover, the circumferential closed structure of the coal flow channel can prevent the coal from leaking out to the surroundings, and the closed structure of the operating chamber can protect the operators from the coal gushing out when the main body of the coal bunker collapses and the harmful gases such as gas in the mine, thereby improving the safety of the operation. The escape channel provides an emergency evacuation path for underground workers and improves the survival rate in emergency situations. The operating chamber is set in the transfer chamber and separated from the coal flow channel, which can prevent the operator from direct contact with the coal flow when the main body of the coal bunker collapses, reduce the operation risk, and improve the operation efficiency. The escape channel is connected to the operating chamber, so that the operator can evacuate directly and quickly to a safe area in an emergency, improve the emergency response speed, and avoid the operator being buried by the coal flow or trapped in the operating chamber before the main body of the coal bunker collapses, thereby ensuring the safety of the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0018] Figure 1 A schematic diagram of the structure of an underground safety coal bunker system provided by an embodiment of the present invention is shown;

[0019] Figure 2 Shows Figure 1 The cross-section at AA in the figure;

[0020] Figure 3 Shows Figure 1 The cross-section at BB in the figure;

[0021] Figure 4 Shows Figure 1 Schematic diagram of the structure of the central vent when it is open.

[0022] The above drawings include the following reference numerals:

[0023] 10. Coal bunker main body;

[0024] 20. Coal feeder;

[0025] 30. Coal flow channel;

[0026] 40. Belt conveyor;

[0027] 50. Transfer chamber;

[0028] 60. Operation chamber;

[0029] 70. Safe haven;

[0030] 80. Ventilation windows;

[0031] 90. Pedestrian door. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] like Figures 1 to 4 As shown, an embodiment of the present invention provides an underground safe coal bunker system, including a coal bunker body 10, a coal feeder 20, a coal flow channel 30, a belt conveyor 40, a transfer chamber 50, an operating chamber 60 and a safe passage 70. The coal feeder 20, the coal flow channel 30 and the transfer chamber 50 are all located below the coal bunker body 10. The belt conveyor 40 is located below the coal flow channel 30 and the transfer chamber 50. The coal flow channel 30 is a circumferentially closed structure. The coal output by the coal bunker body 10 enters the coal flow channel 30 through the coal feeder 20. The coal in the coal flow channel 30 is input below the belt conveyor 40. The operating chamber 60 is arranged in the transfer chamber 50 and separated from the coal flow channel 30. The operating chamber 60 is a closed structure. The operating chamber 60 is connected to the safe passage 70.

[0034] In this embodiment, the coal outputted from the coal bunker body 10 through the lower port of the coal bunker enters the coal flow channel 30 through the coal feeder 20, and then enters the belt conveyor 40. Such a design can reduce the scattering and loss of coal and improve the transmission efficiency of coal. Moreover, the circumferential closed structure of the coal flow channel 30 can prevent the coal from leaking out to the surroundings, and the closed structure of the operating chamber 60 can protect the operator from the coal gushing out when the coal bunker body 10 collapses and the harmful gases such as gas existing in the mine, thereby improving the safety of the operation. The escape channel 70 provides an emergency evacuation path for underground workers, thereby improving the survival rate in emergency situations. The operating chamber 60 is arranged in the transfer chamber 50, separated from the coal flow channel 30, so that the operator can be prevented from direct contact with the coal flow when the coal bunker body 10 collapses, thereby reducing the operation risk and improving the operation efficiency. Moreover, the escape passage 70 is connected to the operating chamber 60, so that the operating personnel can evacuate directly and quickly to a safe area in an emergency, thereby improving the emergency response speed and preventing the operating personnel from being buried by the coal flow or trapped in the operating chamber 60 before they have time to react when the coal bunker body 10 collapses, thereby ensuring the safety of the operating personnel.

[0035] The escape passage 70 may be disposed above the belt conveyor 40 , and the escape passage 70 is located on a side of the operating chamber 60 away from the coal flow passage 30 , or the escape passage 70 may be disposed at other locations as required.

[0036] Furthermore, the bottom wall, the top wall and the surrounding side walls of the operating chamber 60 are provided with a reinforcing material layer, and the reinforcing material layer includes at least one of steel plates, steel bars, cement and rocks.

[0037] In this embodiment, the bottom wall, top wall and surrounding side walls of the operation chamber 60 are all provided with a reinforcing material layer, and the provision of the reinforcing material layer can improve the structural stability of the operation chamber 60, so that when it is subjected to external forces such as the coal flow gushing out when the coal bunker body 10 collapses, the reinforcing material layer can absorb and disperse the impact energy, reduce the damage to the structure of the operation chamber 60, maintain the integrity of the structure, reduce the risk of collapse, and ensure the safety of operators and equipment. In addition, the reinforcing material layer can extend the service life of the operation chamber 60 and reduce the frequent maintenance and replacement costs caused by structural aging.

[0038] like Figure 1 As shown, the side wall of the operating chamber 60 has a ventilation opening, and an openable and closable ventilation window 80 is provided at the ventilation opening.

[0039] In this embodiment, the vents allow fresh air to enter the operating chamber 60, forming air circulation, maintaining the air quality in the operating chamber 60, and reducing the accumulation of harmful gases and dust, which is very important for the health of the workers. An openable and closable ventilation window 80 is provided at the vents, allowing the operator to adjust the air volume according to actual needs.

[0040] There are multiple ventilation windows 80 , which are distributed on a side of the operating chamber 60 facing the coal flow channel 30 and a side of the operating chamber 60 facing the escape channel 70 .

[0041] In this embodiment, by arranging ventilation windows 80 in two different directions, an air flow channel can be formed to promote the entry of fresh air, help form effective air circulation, and keep the air inside the operating chamber 60 fresh. The ventilation windows 80 distributed in two different directions can be adjusted independently or used simultaneously according to actual needs, providing more flexible air volume control to meet different ventilation needs. The arrangement of multiple ventilation windows 80 can increase the ventilation area and improve ventilation efficiency.

[0042] Specifically, the ventilation window 80 includes a baffle, a side panel and a hanging plate. The lower edge of the baffle is hinged to the lower edge of the vent. The baffle is connected to the hanging plate through the side panel, and there is an angle between the hanging plate and the baffle. The baffle and the hanging plate are respectively located on both sides of the vent. The baffle is used to open and close the vent. When the baffle is opened, the edge of the hanging plate and the vent abuts to limit the opening angle of the baffle. When the coal bunker body 10 collapses, the flowing coal enters the transfer chamber 50. When the height of the flowing coal reaches the baffle, the baffle is pushed to close the vent.

[0043] In this embodiment, when the coal bunker body 10 collapses and the flowing coal enters the transfer chamber 50, when the height of the flowing coal reaches the baffle, it will push the baffle to close the vent, which is equivalent to an automatic safety closing mechanism. The vent can be quickly closed in an emergency to prevent the flowing coal from entering the operating chamber 60, thereby ensuring the safety of the operator. In the case of the coal bunker body 10 collapsing, the flowing coal may generate a large amount of coal dust. The automatic closing of the baffle can prevent the coal dust from entering the operating chamber 60 through the vent, thereby reducing air pollution and health risks. The edge of the hanging plate and the vent abuts to limit the opening angle of the baffle, preventing the baffle from being fully opened, and preventing the vent from being too large when the coal bunker body 10 collapses, causing a large amount of flowing coal to enter instantly, thereby causing a safety hazard to the operator. Moreover, the connection structure of the baffle, the side plate and the hanging plate provides good stability. Even under the pressure of a large amount of flowing coal, the baffle is not easy to deform or damage, thereby gaining escape time for the operator when the coal bunker body 10 collapses.

[0044] Alternatively, in an embodiment not shown in the figure, the underground safety coal bunker system also includes a monitoring device and a driving device, the monitoring device is used to monitor whether the coal bunker body 10 has collapsed, and the driving device is used to drive the ventilation windows 80 to open and close, and the monitoring device and the driving device are electrically connected; wherein, when the monitoring device detects that the coal bunker body 10 has collapsed, the driving device drives the ventilation windows 80 to close.

[0045] In this embodiment, through the electrical connection between the monitoring device and the driving device, the underground safety coal bunker system can automatically respond to the detection result of the monitoring device. When the monitoring device detects that the coal bunker body 10 has collapsed, the driving device will automatically drive the ventilation window 80 to close to prevent the flow of coal and dust from entering the operating chamber 60. No manual intervention is required, which improves the response speed and efficiency and ensures the safety of operators and equipment. In addition, the electrically connected monitoring device and driving device can ensure stable operation in various environments, improving reliability and safety.

[0046] Among them, the monitoring device is a camera or a pressure sensor; the underground safety coal bunker system also includes an alarm device, the monitoring device and the alarm device are electrically connected, and when the monitoring device detects that the coal bunker body 10 has collapsed, the alarm device sends out an alarm message.

[0047] In this embodiment, the monitoring device is a camera or a pressure sensor. The camera can perform real-time video monitoring and provide intuitive visual information, so that the operator can intuitively see the situation inside the coal bunker, which enhances the transparency of the operation. The video data recorded by the camera can be used as an important basis for accident investigation, helping to analyze the cause of the collapse of the coal bunker body 10 so as to take improvement measures. The pressure sensor is more sensitive to environmental changes and can detect changes in the internal pressure of the coal bunker to ensure that the occurrence of the collapse can be detected in time under various circumstances. Regardless of which method is used, the collapse of the coal bunker body 10 can be monitored and feedback can be provided. The monitoring device is electrically connected to the alarm device. When the monitoring device detects that the coal bunker body 10 has collapsed, it will feed back the signal to the alarm device. The alarm device immediately sends out an alarm message, so that the operator can quickly learn about the situation and respond, ensuring that the operator has enough time to evacuate the dangerous area and reduce casualties caused by the collapse of the coal bunker body 10.

[0048] Specifically, a side wall of the operating chamber 60 is provided with an openable and closable observation hole, which faces the coal feeder 20 .

[0049] In this embodiment, the operator can directly observe the working state of the coal feeder 20 through the observation hole in the operating chamber 60, which helps to monitor the operation of the coal feeder 20 in real time. The operator can quickly determine whether the coal feeder needs to be adjusted or stopped, find problems in time, reduce downtime caused by improper operation, and improve production efficiency. The observation hole allows the operator to monitor the coal feeder 20 and perform preliminary fault diagnosis without entering the dangerous area near the coal feeder 20, reducing the risk of maintenance and repair.

[0050] like Figure 3 As shown, a pedestrian door 90 that can be opened and closed is provided on the side of the operating chamber 60 away from the coal flow channel 30 , and the pedestrian door 90 is connected to upper and lower stairs, which extend from the pedestrian door 90 to the installation surface of the belt conveyor 40 .

[0051] In this embodiment, a pedestrian door 90 is provided on the side of the operation chamber 60 away from the coal flow passage 30, which provides a direct passage to the installation surface of the belt conveyor 40, making it convenient for operators to enter and exit the operation chamber 60, thereby improving work efficiency. The pedestrian door 90 is provided on the side away from the coal flow passage 30 to prevent coal from entering the operation chamber 60 through the pedestrian door when the coal bunker body 10 collapses, thereby reducing safety risks.

[0052] Specifically, an operating platform is provided in the operating chamber 60 , and the operating platform is used to control the coal feeder 20 , the belt conveyor 40 and the coal discharge gate of the coal bunker body 10 .

[0053] In this embodiment, an operating platform is provided in the operating chamber 60, and the operating platform can centrally control the coal feeder 20, the belt conveyor 40 and the coal gate of the coal bunker body 10, simplifying the operation process, facilitating unified management and control by operators, and improving operation efficiency. Operators can remotely control the equipment in a safe location, reducing the need to enter potential dangerous areas and ensuring the safety of operators. In addition, the operating platform provided in the operating chamber 60 has a good viewing angle, so that operators can observe the operating status of all equipment and adjust the operating parameters in time to meet work needs.

[0054] The underground safe coal bunker system provided in this scheme provides a safe working environment and emergency escape path for operators by setting up a closed operating chamber 60 and an escape passage 70, so that operators can evacuate directly and quickly to a safe area in an emergency, thereby improving the emergency response speed and preventing operators from being buried by coal flow or trapped in the operating chamber 60 before they have time to react when the coal bunker body 10 collapses, thereby ensuring the safety of operators. At the same time, through the linkage of the monitoring device and the driving device, the ventilation window 80 is automatically closed to prevent the flowing coal from entering the operating chamber 60, further ensuring the safety of the operators. In addition, the design of the reinforcing material layer and the vents of the operating chamber 60 not only improves the structural strength of the chamber, but also ensures good ventilation conditions, providing operators with a safer and more comfortable working environment.

[0055] The above is only an optional embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may be modified and varied in various ways. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

[0056] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0057] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of this solution. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being only exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so that once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0058] In the description of this scheme, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing this scheme and simplifying the description. Unless otherwise stated, these directional words do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they cannot be understood as limiting the scope of protection of this scheme; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0059] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0060] In addition, it should be noted that the use of words such as "first" and "second" to limit components is only to facilitate the distinction between corresponding components. Unless otherwise stated, the above words have no special meaning and therefore cannot be understood as limiting the scope of protection of this scheme.

Claims

1. An underground safety coal bunker system, characterized in that: The invention comprises a coal bunker body (10), a coal feeder (20), a coal flow channel (30), a belt conveyor (40), a transfer chamber (50), an operation chamber (60) and a danger escape passage (70), wherein the coal feeder (20), the coal flow channel (30) and the transfer chamber (50) are all located below the coal bunker body (10), the belt conveyor (40) is located below the coal flow channel (30) and the transfer chamber (50), and the coal flow channel ( The transfer chamber (50) is a circumferentially closed structure. The coal outputted from the coal bunker body (10) enters the coal flow channel (30) through the coal feeder (20). The coal in the coal flow channel (30) is input to the bottom of the belt conveyor (40). The operation chamber (60) is arranged in the transfer chamber (50) and is separated from the coal flow channel (30). The operation chamber (60) is a closed structure. The operation chamber (60) is connected to the escape channel (70).

2. The underground safety coal bunker system according to claim 1, characterized in that: The bottom wall, the top wall and the surrounding side walls of the operating chamber (60) are all provided with a reinforcement material layer, and the reinforcement material layer includes at least one of steel plate, steel bar, cement and rock.

3. The underground safety coal bunker system according to claim 1, characterized in that: The side wall of the operating chamber (60) has a ventilation opening, and an openable and closable ventilation window (80) is arranged at the ventilation opening.

4. The underground safety coal bunker system according to claim 3 is characterized in that: There are a plurality of ventilation windows (80), and the plurality of ventilation windows (80) are distributed on a side of the operating chamber (60) facing the coal flow passage (30) and a side of the operating chamber (60) facing the escape passage (70).

5. The underground safety coal bunker system according to claim 3, characterized in that: The ventilation window (80) includes a baffle, a side panel and a hanging panel, the lower edge of the baffle is hinged to the lower edge of the vent, the baffle is connected to the hanging panel via the side panel, and an angle is formed between the hanging panel and the baffle; the baffle and the hanging panel are respectively located on both sides of the vent, the baffle is used to open and close the vent, and when the baffle is opened, the hanging panel and the edge of the vent abut against each other to limit the opening angle of the baffle; when the coal bunker body (10) is breached, the flowing coal enters the transfer chamber (50), and when the height of the flowing coal reaches the baffle, the baffle is pushed to close the vent.

6. The underground safety coal bunker system according to claim 3, characterized in that: The underground safety coal bunker system also includes a monitoring device and a driving device, wherein the monitoring device is used to monitor whether the coal bunker body (10) has collapsed, and the driving device is used to drive the ventilation window (80) to open and close, and the monitoring device and the driving device are electrically connected; wherein, when the monitoring device detects that the coal bunker body (10) has collapsed, the driving device drives the ventilation window (80) to close.

7. The underground safety coal bunker system according to claim 6, characterized in that: The monitoring device is a camera or a pressure sensor; the underground safety coal bunker system also includes an alarm device, the monitoring device and the alarm device are electrically connected, and when the monitoring device detects that the coal bunker body (10) has collapsed, the alarm device sends out an alarm message.

8. The underground safety coal bunker system according to claim 1, characterized in that: The side wall of the operating chamber (60) is provided with an openable and closable observation hole, and the observation hole faces the coal feeder (20).

9. The underground safety coal bunker system according to claim 1, characterized in that: A pedestrian door (90) that can be opened and closed is provided on the side of the operating chamber (60) that is away from the coal flow channel (30). The pedestrian door (90) is connected to upper and lower stairs, and the upper and lower stairs extend from the pedestrian door (90) to the installation surface of the belt conveyor (40).

10. The underground safety coal bunker system according to claim 1, characterized in that: An operating platform is provided in the operating chamber (60), and the operating platform is used to control the coal feeder (20), the belt conveyor (40) and the coal discharge gate of the coal bunker body (10).

Images