A coal mine area methane and carbon dioxide emission monitoring device

Abstract

This utility model discloses a methane and carbon dioxide emission monitoring device for coal mine areas, including a protective support shell, an outer mounting ring, a control module, and a detector. A bottom shell and a support ring frame are installed at the bottom of the protective support shell. An outer rotating cover is rotatably connected to the outside of the bottom shell. The detector and the support ring frame are both located inside the bottom shell. An air inlet and an exhaust outlet are respectively opened on both sides of the bottom shell, and the air inlet and exhaust outlet are horizontally aligned. A diversion fan is installed on the support ring frame, positioned between the air inlet and the exhaust outlet. Automatic cleaning is achieved by rotating the filter screen and backflushing it with airflow through the outer rotating cover, eliminating the need for frequent manual disassembly and cleaning of the filter components, reducing maintenance costs, improving efficiency, meeting the requirements for long-term stable operation of the monitoring device, and effectively addressing the interference of the high-dust environment in coal mine areas on the monitoring device.

Description

Technical Field

[0001] This utility model relates to the field of emission monitoring technology, specifically a methane and carbon dioxide emission monitoring device for coal mining areas. Background Technology

[0002] In the field of coal mine safety production and green low-carbon management, methane and carbon dioxide emission monitoring is a core component. Methane is a major flammable and explosive gas in underground coal mines, and excessive concentrations can easily lead to explosions and threaten the lives of miners. Therefore, it is necessary to rely on methane and carbon dioxide emission monitoring devices to collect, analyze, and issue early warnings of gas concentrations in underground mining faces, return airways, gas extraction systems, and surface areas such as gangue piles and coal storage yards in real time. This device has become an essential piece of equipment for coal mine safety control and environmental management. However, the dust concentration in coal mining areas is extremely high, which seriously interferes with the normal operation of monitoring devices. On the one hand, it easily blocks the sampling channels of the devices, preventing gas samples from effectively entering the detection module, resulting in low or no monitoring data and causing false "safety" misjudgments. On the other hand, it contaminates the detection elements of core sensors such as catalytic combustion and electrochemical sensors, damaging their activity, leading to data distortion, increased errors, and even shortening the sensor's lifespan. To mitigate the impact of dust, existing monitoring devices often have filter components installed at the air inlet. However, coal mine dust particles are fine and highly adhesive, and the filter components are easily clogged by dust after long-term use. This not only hinders air intake and affects detection accuracy but also requires staff to disassemble and clean them regularly, which is cumbersome and frequent. In particular, the underground working environment is complex, resulting in high maintenance costs and low efficiency, making it difficult to meet the requirements for long-term stable operation of monitoring devices.

[0003] Therefore, this utility model provides a monitoring device for methane and carbon dioxide emissions in coal mining areas. Utility Model Content

[0004] In view of the shortcomings of the existing technology, this utility model provides a monitoring device for methane and carbon dioxide emissions in coal mining areas to solve the above problems.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a methane and carbon dioxide emission monitoring device for coal mine areas, comprising a protective support shell, an outer mounting ring, a control module, and a detector. The protective support shell has a bottom shell and a support ring frame installed at its bottom. An outer rotating cover is rotatably connected to the outside of the bottom shell. The detector and the support ring frame are both located inside the bottom shell. An air inlet and an exhaust outlet are respectively provided on both sides of the bottom shell, with the air inlet and exhaust outlet corresponding horizontally. A flow-guiding fan is installed on the support ring frame, positioned between the air inlet and the exhaust outlet. The support ring frame is located close to the exhaust outlet. A plurality of filter screens are installed on the side wall of the outer rotating cover, with each filter screen corresponding to the position and size of the air inlet and the exhaust outlet.

[0006] Preferably, a connecting inner ring is installed on the inner side of the top of the bottom shell, and a plurality of fastening bolts are inserted into the inner wall of the protective support shell, and the plurality of fastening bolts are threaded to the inner wall of the connecting inner ring.

[0007] Preferably, a drive unit is installed on the inner wall of the bottom end of the bottom shell, and the output end of the drive unit is connected to the inner wall of the bottom end of the outer rotating cover.

[0008] Preferably, a support rod is installed on one side of the protective support housing, and a cleaning brush is installed on one side of the support rod. The cleaning brush is slidably connected to the outer rotating cover and the outside of several filter screens.

[0009] Preferably, the support rod and the cleaning brush are positioned corresponding to the exhaust port and the support ring frame, and the airflow fan can generate airflow to directly blow away the dust cleaned on the filter screen. Beneficial effects

[0010] Compared with the prior art, the present invention has the following advantages: (1) This utility model solves the problem that dust can easily clog the sampling channel and contaminate the sensor detection element, leading to distorted monitoring data, equipment failure, and affecting the accuracy of safety production early warning and carbon emission accounting by using multiple filter screens to intercept the dust in an alternating manner.

[0011] (2) This utility model achieves automatic cleaning by rotating the filter screen and backflushing the airflow through the outer rotating cover. It eliminates the need for staff to frequently disassemble and clean the filter components, reducing maintenance costs and improving efficiency. It meets the requirements for long-term stable operation of the monitoring device and effectively addresses the interference of the high dust environment in the coal mining area on the monitoring device. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a three-dimensional cross-sectional structural diagram of the present invention; Figure 3 This is a three-dimensional exploded structural diagram of the bottom shell and the outer rotating cover of this utility model; Figure 4 This is a three-dimensional structural diagram of the protective support shell in this utility model.

[0013] In the diagram: 1. Protective support housing; 11. Mounting outer ring; 12. Control module; 13. Detector; 14. Fastening bolts; 2. Bottom shell; 21. Air inlet; 22. Exhaust port; 23. Connecting inner ring; 24. Drive unit; 3. Support ring frame; 31. Drainage fan; 4. Outer rotating cover; 41. Filter screen; 5. Support rod; 51. Cleaning brush. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figure 1-4 A methane and carbon dioxide emission monitoring device for coal mine areas includes a protective support shell 1, an outer mounting ring 11, a control module 12, and a detector 13. A bottom shell 2 and a support ring frame 3 are installed at the bottom of the protective support shell 1. An outer rotating cover 4 is rotatably connected to the outside of the bottom shell 2. The detector 13 and the support ring frame 3 are both located inside the bottom shell 2.

[0016] The bottom shell 2 has an air inlet 21 and an exhaust outlet 22 on its two sides, and the air inlet 21 and the exhaust outlet 22 are positioned in the same horizontal direction.

[0017] It should be noted that the protective support housing 1 described in this embodiment is equipped with an alarm that is electrically connected to the mounting outer ring 11 and the control module 12.

[0018] A diversion fan 31 is installed on the support ring frame 3. The diversion fan 31 is located between the air inlet 21 and the exhaust port 22. The support ring frame 3 is located close to the exhaust port 22.

[0019] It should be noted that the airflow generated by the duct fan 31 described in this embodiment enters through the air inlet 21 and is discharged through the exhaust port 22.

[0020] Several filter screens 41 are installed on the side wall of the outer rotating cover 4. The positions and dimensions of the filter screens 41 correspond to those of the air inlet 21 and the exhaust outlet 22.

[0021] It should be noted that the outer rotating cover 4 described in this embodiment drives several filter screens 41 to rotate alternately to the positions of the air inlet 21 and the exhaust outlet 22, which facilitates timely backflushing and cleaning after interception.

[0022] Specifically, during operation, the air inlets 21 on both sides of the bottom shell 2 are used to introduce the gas containing methane, carbon dioxide, and dust to be monitored. The exhaust outlet 22 facilitates gas flow. The airflow fan 31 on the support ring frame 3 is activated to generate airflow, allowing the gas to enter the bottom shell 2 from the air inlets 21. When the gas passes through the detector 13, the detector 13 detects the concentration of methane and carbon dioxide in the gas. The detection data is transmitted to the control module 12. If the concentration exceeds the standard, the control module 12 will trigger an alarm that is electrically connected to the outer ring 11 and the control module 12. At the same time, the outer rotating cover 4 rotates, causing several filter screens 41 installed on its side wall to rotate alternately to the positions of the air inlets 21 and the exhaust outlet 22. The filter screens 41 can intercept dust in the gas, preventing dust from entering the bottom shell 2 and contaminating the detector 13, etc. The core component; and during the rotation process, combined with the airflow generated by the diversion fan 31, it can promptly perform a back-blowing cleaning operation on the filter screen 41, preventing dust from accumulating and clogging the filter screen 41 for a long time. In this way, on the one hand, the interception of the filter screen 41 solves the problem that dust easily clogs the sampling channel, contaminates the sensor detection element, and leads to distorted monitoring data, equipment failure, and affects the accuracy of safety production early warning and carbon emission accounting; on the other hand, the outer rotating cover 4 drives the filter screen 41 to rotate to achieve automatic cleaning, eliminating the need for frequent manual disassembly and cleaning of the filter components, reducing maintenance costs, improving efficiency, meeting the requirements for long-term stable operation of the monitoring device, effectively dealing with the interference of the high dust environment in the coal mining area on the monitoring device, and the airflow generated by the diversion fan 31 can dissipate heat from the detector 13 and other components.

[0023] In one embodiment of this utility model, such as Figures 1-4 As shown, a connecting inner ring 23 is installed on the inner side of the top of the bottom shell 2, and several fastening bolts 14 are inserted into the inner wall of the protective support shell 1. All the fastening bolts 14 are threaded to the inner wall of the connecting inner ring 23.

[0024] Specifically, the inner connecting ring 23 on the inner side of the top of the bottom shell 2 provides a structural basis for the threaded connection of the fastening bolts 14. After several fastening bolts 14 are inserted into the inner wall of the protective support shell 1, they are threadedly connected to the inner wall of the connecting ring 23, thereby firmly assembling the protective support shell 1 and the bottom shell 2 together. This connection method allows the bottom shell 2 to be stably installed at the bottom of the protective support shell 1, providing a reliable mounting carrier for components such as the detector 13 and the support ring frame 3 inside the bottom shell 2, and ensuring the stability of the entire monitoring device structure.

[0025] In one embodiment of this utility model, such as Figures 1-4 As shown, a drive unit 24 is installed on the inner wall of the bottom end of the bottom shell 2, and the output end of the drive unit 24 is connected to the inner wall of the bottom end of the outer rotating cover 4 for transmission.

[0026] Specifically, when the drive unit 24 is working, its output end generates power and transmits it to the inner wall of the bottom end of the outer rotating cover 4, thereby driving the outer rotating cover 4 to rotate around the outer side of the bottom shell 2. During the rotation of the outer rotating cover 4, it can drive several filter screens 41 installed on its side wall to rotate synchronously, so that the filter screens 41 alternately rotate to the positions of the air inlet 21 and the exhaust port 22. In conjunction with components such as the flow fan 31, it can complete the automatic cleaning of the filter screens 41, ensuring the continuous and effective operation of filtration and gas monitoring.

[0027] In one embodiment of this utility model, such as Figures 1-4 As shown, a support rod 5 is installed on one side of the protective support housing 1, and a cleaning brush 51 is installed on one side of the support rod 5. The cleaning brush 51 is slidably connected to the outer rotating cover 4 and the outside of several filter screens 41.

[0028] Specifically, the support rod 5 provides fixed support for the cleaning brush 51, ensuring that the cleaning brush 51 is stably positioned outside the outer rotating cover 4 and the filter screen plate 41. When the drive unit 24 drives the outer rotating cover 4 to rotate, the outer rotating cover 4 and the filter screen plate 41 on it will slide relative to the fixed cleaning brush 51. At this time, the cleaning brush 51 can generate frictional contact with the surface of the rotating outer rotating cover 4 and the surface of the filter screen plate 41, thereby brushing away the dust and impurities attached to the filter screen plate 41, achieving mechanical cleaning of the filter screen plate 41, and preventing dust from clogging the filter screen plate 41 and affecting the air intake efficiency and monitoring effect.

[0029] In one embodiment of this utility model, such as Figures 1-4 As shown, the support rod 5 and the cleaning brush 51 are positioned corresponding to the exhaust port 22 and the support ring frame 3. The airflow fan 31 can generate airflow, which facilitates the direct blowing away of the dust cleaned on the filter screen plate 41.

[0030] Specifically, when the outer rotating cover 4 drives the filter screen plate 41 to rotate, and the cleaning brush 51 removes the dust from the filter screen plate 41, the guiding fan 31 on the support ring frame 3 operates to generate directional airflow. This airflow flows from the air inlet 21 to the exhaust port 22, and when it passes through the dust generated during cleaning, it carries the dust away from the filter screen plate 41. Through this combination of positional design and airflow drive, the cleaned dust is removed in a timely manner, reducing the amount of dust remaining on the filter screen plate 41.

[0031] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0032] Working Principle: When the methane and carbon dioxide emission monitoring device in this coal mine is in operation, it first connects the inner ring 23 on the inner side of the top of the bottom shell 2 to the fastening bolts 14 on the inner wall of the protective support shell 1, achieving a stable assembly and providing a stable carrier for the internal components. After the device is started, the drive unit 24 on the inner wall of the bottom end of the bottom shell 2 outputs power, driving the outer rotating cover 4 to rotate around the outer side of the bottom shell 2. This causes several filter screens 41 on the side wall of the outer rotating cover 4 to rotate alternately to the corresponding air inlet 21 and exhaust outlet 22 positions on both sides of the bottom shell 2. At the same time, the duct fan 31 on the support ring frame 3 starts to generate a directional airflow from the air inlet 21 to the exhaust outlet 22, introducing the gas to be monitored into the bottom shell 2. After the gas passes through the filter screens 41 to filter dust, it passes through the detector 13, where the detector 13 detects the concentration of methane and carbon dioxide. The data is transmitted to the control module 12, and if the concentration exceeds the standard, an alarm is triggered. During the rotation of the outer rotating cover 4, the cleaning brush 51 fixed by the support rod 5 on one side of the protective support housing 1 slides into contact with the filter screen 41 to remove the attached dust. The airflow generated by the duct fan 31 will drive away the cleaned dust, realizing automatic dust cleaning and stable monitoring of the device without the need for frequent manual maintenance.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A methane and carbon dioxide emission monitoring device for coal mine areas, comprising a protective support shell (1), an outer mounting ring (11), a control module (12), and a detector (13), characterized in that, The protective support housing (1) has a bottom shell (2) and a support ring frame (3) installed at its bottom. An outer rotating cover (4) is rotatably connected to the outside of the bottom shell (2). The detector (13) and the support ring frame (3) are both located inside the bottom shell (2). The bottom shell (2) has an air inlet (21) and an exhaust outlet (22) on both sides, and the air inlet (21) and the exhaust outlet (22) are positioned in the horizontal direction. A diversion fan (31) is installed on the support ring frame (3). The diversion fan (31) is located between the air inlet (21) and the exhaust port (22). The support ring frame (3) is located close to the exhaust port (22). The outer rotating cover (4) has several filter screens (41) installed on its side wall. The positions and sizes of the filter screens (41) correspond to those of the air inlet (21) and the exhaust outlet (22).

2. The methane and carbon dioxide emission monitoring device for coal mine areas according to claim 1, characterized in that, A connecting inner ring (23) is installed on the inner side of the top of the bottom shell (2), and a number of fastening bolts (14) are inserted into the inner wall of the protective support shell (1). The fastening bolts (14) are threaded to the inner wall of the connecting inner ring (23).

3. The methane and carbon dioxide emission monitoring device for coal mine areas according to claim 1, characterized in that, A drive unit (24) is installed on the inner wall of the bottom end of the bottom shell (2), and the output end of the drive unit (24) is connected to the inner wall of the bottom end of the outer rotating cover (4) for transmission.

4. The methane and carbon dioxide emission monitoring device for coal mine areas according to claim 1, characterized in that, A support rod (5) is installed on one side of the protective support housing (1), and a cleaning brush (51) is installed on one side of the support rod (5). The cleaning brush (51) is slidably connected to the outer rotating cover (4) and the outside of several filter screens (41).

5. A monitoring device for methane and carbon dioxide emissions in a coal mine area according to claim 4, characterized in that, The support rod (5) and the cleaning brush (51) are both located at the exhaust port (22) and the support ring frame (3). The airflow fan (31) can generate airflow, which makes it easy to blow away the dust cleaned on the filter screen (41) directly through the airflow.

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