A dust and hydrogen sulfide prevention and control system for a coal mining face

Abstract

This utility model discloses a dust and hydrogen sulfide control system for coal mining face, including a dust removal module and a hydrogen sulfide monitoring module. The dust removal module includes a first chamber, a second chamber, and a third chamber. A filter screen is installed in the second chamber to filter particulate matter in the air. Aerosol components are installed in the first and third chambers to intercept and set off airborne dust. Air enters the hydrogen sulfide monitoring module, where an alkaline aerosol component generates alkaline aerosol to neutralize the hydrogen sulfide. This utility model achieves high-quality dust removal by sequentially performing aerosol, filtration, and aerosol processing on dust in the dust removal module. Simultaneously, the hydrogen sulfide monitoring module generates alkaline aerosol of corresponding concentration based on the hydrogen sulfide concentration in the air, ensuring sufficient neutralization of the hydrogen sulfide and effectively reducing dust and removing hydrogen sulfide from the coal mining face.

Description

Technical Field

[0001] This invention belongs to the field of mine safety production, and in particular relates to a dust and hydrogen sulfide prevention and control system for coal mining face. Background Technology

[0002] Dust and hydrogen sulfide are two major hazardous factors in coal mining, posing a serious threat to miners' health and safety. Dust mainly consists of tiny particles generated during rock crushing and coal extraction. Long-term inhalation of this dust can cause pulmonary fibrosis. Hydrogen sulfide is a colorless, highly toxic, and flammable gas with a strong rotten egg odor. In underground coal mines, hydrogen sulfide mainly originates from the natural release of coal seams, the oxidation of sulfur-containing minerals, and the decomposition of sulfides in water. Hydrogen sulfide is highly irritating to the respiratory tract. Long-term exposure to low concentrations of hydrogen sulfide may cause miners to experience mild asthma and coughing; higher concentrations can cause acute poisoning.

[0003] Currently, during the mining process at the working face, although desulfurization and dust removal equipment can remove dust and harmful gases such as hydrogen sulfide at the same time, the dust removal and desulfurization effect is poor, and the concentration of hydrogen sulfide generally cannot be accurately monitored.

[0004] Therefore, it is necessary to provide a dust and hydrogen sulfide control system that can monitor the concentration of hydrogen sulfide and has higher desulfurization and dust removal efficiency. Summary of the Invention

[0005] The purpose of this invention is to provide a dust and hydrogen sulfide control system for coal mining face, so as to solve the problems existing in the prior art.

[0006] To achieve the above objectives, the present invention provides a dust and hydrogen sulfide control system for coal mining face, comprising: an air inlet, a dust removal module, a hydrogen sulfide monitoring module, and an air outlet; the air inlet is connected to one end of the dust removal module, the hydrogen sulfide monitoring module is connected to the other end of the dust removal module, and the other end of the hydrogen sulfide monitoring module is connected to the air outlet; the dust removal module includes a housing, in which two partitions are provided to divide the housing into a first chamber, a second chamber, and a third chamber; the second chamber is equipped with a filter screen for filtering out dust from the air. The first and third chambers are equipped with aerosol components to intercept and precipitate dust in the air. The hydrogen sulfide monitoring module includes a bellows, in which a sensor, an alkaline aerosol component, and a controller are installed. The sensor is used to determine the presence of hydrogen sulfide in the air and to determine the concentration of hydrogen sulfide. It is also connected to an alarm device that issues an alarm signal when the concentration exceeds a threshold. The alkaline aerosol component is used to generate alkaline spray to neutralize the hydrogen sulfide, and the concentration of the alkaline spray is adjusted according to the concentration monitored by the sensor.

[0007] Furthermore, the first chamber, the second chamber, the third chamber, and the bellows are arranged side by side. The air inlet is connected to the bottom of the first chamber, the left side of the bellows is connected to the third chamber, and the right side of the bellows is connected to the air outlet. The aerosol assembly is located at the top of the first chamber and the third chamber, and the alkaline aerosol assembly is located at the top of the bellows.

[0008] Furthermore, the aerosol assembly and the alkaline aerosol assembly include a water tank, a water pump, a spray pipe, and nozzles, with the nozzles arranged in an array at intervals on the spray pipe.

[0009] Furthermore, a support rod is vertically installed at the center of the bottom surface of the air box, and a horizontal mounting rod is provided on the support rod for mounting the sensor.

[0010] Furthermore, the controller receives signals from the sensor and controls the activation and deactivation of the alarm device based on the received signals. The alarm device is located on the side of the bellows and is an audible and visual alarm device. When the alarm device is activated, it emits a warning sound and the alarm light illuminates simultaneously.

[0011] Furthermore, four connecting rods are vertically arranged on the top surface of the box and the bellows, and connecting blocks are fixedly connected to the connecting rods. The top surface of the connecting blocks is provided with connecting holes. The connecting rods, connecting blocks and connecting holes are used to fix the bellows and the box.

[0012] Furthermore, the controller receives signals from the sensor and adjusts the alkaline spray concentration.

[0013] Furthermore, the filter screen is vertically positioned at the center of the second chamber.

[0014] Furthermore, a water pipe is provided at the upper end of the filter screen for cleaning the dust on the filter screen.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This invention consists of a dust removal module and a hydrogen sulfide detection module. The dust removal module has three chambers, in which airborne dust is first atomized, filtered, and then atomized again, achieving a good dust removal effect. In the hydrogen sulfide detection module, the concentration of hydrogen sulfide is first monitored by a sensor, and then an alkaline spray of corresponding concentration is generated based on the obtained hydrogen sulfide concentration to fully neutralize the hydrogen sulfide in the air. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0018] Figure 1 This is a three-dimensional structural diagram of a coal mining face dust and hydrogen sulfide control system according to an embodiment of the present invention;

[0019] Figure 2 This is a cross-sectional view of a dust removal module in a coal mining face dust and hydrogen sulfide control system according to an embodiment of the present invention.

[0020] Figure 3 This is a cross-sectional view of the hydrogen sulfide monitoring module of a coal mining face dust and hydrogen sulfide prevention and control system according to an embodiment of the present invention;

[0021] In the diagram: 1. Air inlet; 2. Housing; 3. Air box; 4. Air outlet; 5. First chamber; 6. Second chamber; 7. Third chamber; 9. Aerosol assembly; 10. Sensor; 11. Alkaline aerosol assembly; 12. Controller; 13. Alarm device; 14. Filter screen; 15. Water inlet pipe; 16. Drain pipe; 17. Connecting rod; 18. Connecting block; 19. Connecting hole; 20. Drainage trough. Detailed Implementation

[0022] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this utility model. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0023] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures. They should not be construed as limiting the present invention. To better illustrate the embodiments of the present invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0024] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "front," and "rear" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and 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, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this utility model. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0025] Example 1

[0026] like Figure 1 As shown, this embodiment provides a dust and hydrogen sulfide control system for coal mining face, including an air inlet 1, a dust removal module, a hydrogen sulfide monitoring module, and an air outlet 4. The air inlet 1 is connected to one end of the dust removal module, the hydrogen sulfide monitoring module is connected to the other end of the dust removal module, and the other end of the hydrogen sulfide monitoring module is connected to the air outlet. Through this connection method, the air inlet 1, the dust removal module, the hydrogen sulfide monitoring module, and the air outlet 4 are kept in a state of communication with each other. Air enters the system through the air inlet 1, completes the dust removal operation in the dust removal module, and after dust removal, enters the hydrogen sulfide monitoring module to monitor and neutralize the hydrogen sulfide. Finally, the air is discharged from the system through the air outlet 4.

[0027] The dust removal module includes a housing 2, which is divided into a first chamber 5, a second chamber 6, and a third chamber 7 by two partitions. The second chamber 6 is equipped with a filter 14 to filter out dust from the air. The first chamber 5 and the third chamber 7 are equipped with an atomizing component 9 to intercept and set off dust from the air. Through this arrangement, the air in the dust removal module undergoes a first atomization, filtration by the filter 14, and a second atomization in sequence. In this process, the first atomization intercepts and sets off most of the dust in the air, the filter 14 filters out larger particles in the air, and the second atomization atomizes the remaining dust. This arrangement improves the dust removal effect and removes dust from the air.

[0028] The hydrogen sulfide monitoring module includes a bellows 3, which houses a sensor 10, an alkaline aerosol component 11, and a controller 12. The sensor 10 is used to determine the presence of hydrogen sulfide in the air and to determine its concentration. It is also connected to an alarm device 13, which issues an alarm signal when the concentration exceeds a preset threshold. The alkaline aerosol component 11 generates an alkaline spray to neutralize the hydrogen sulfide, and the alkaline aerosol concentration is adjusted according to the concentration monitored by the sensor 10. Through this module, the alkaline aerosol concentration can be adjusted, thereby achieving more thorough and rapid neutralization of hydrogen sulfide and ensuring that the hydrogen sulfide concentration at the coal mine working face meets national standards.

[0029] The aerosol assembly 9 and the alkaline aerosol assembly 11 each include a water tank, a water pump, a spray pipe, and nozzles, with the nozzles arranged in an array at intervals on the spray pipe. In this embodiment, the aerosol assembly 9 and the alkaline aerosol assembly 11 are preferably positioned on the upper surface of the housing, with the water pump located at the bottom of the water tank. One end of the spray pipe is connected to the water pump, and the other end is connected to the nozzle. The nozzles face downwards, ensuring that the spray generated by the nozzles of the aerosol assembly 9 and the alkaline aerosol assembly 11 is located within the working space of the first chamber 5 and the third chamber 7.

[0030] The alkaline spray is preferably made of Ca(OH)2, and its concentration is 10%-40%. The alkaline spray is generated by the alkaline aerosol assembly 11, and the concentration of the alkaline spray is controlled by the controller 12. The alkaline aerosol assembly is also equipped with an alkaline liquid adder. The controller 12 receives the signal from the sensor 10, adjusts the concentration of the alkaline spray, and adds alkaline liquid by connecting the alkaline liquid adder to the controller 12.

[0031] The controller 12 receives signals from the sensor 10 and controls the activation and deactivation of the alarm device 13 based on the received signals. The alarm device 13 is an audible and visual alarm device, consisting of a buzzer and an LED alarm light. When the sensor 10 detects that the hydrogen sulfide concentration exceeds a preset threshold, the LED alarm light flashes and the buzzer sounds an alarm to alert personnel to evacuate and take emergency measures, such as providing adequate ventilation to accelerate the diffusion of hydrogen sulfide. If no hydrogen sulfide is detected, or the detected value is below the preset value, the buzzer and LED alarm light stop working.

[0032] The filter screen 14 is vertically positioned at the center of the second chamber 6 so that the dust adsorbed and filtered on the filter screen 148 can be smoothly moved down along the filter screen 14 by the water flow, so that the filter screen 14 is in a state where there is not much impurity adsorption.

[0033] The partition 14 has air outlets arranged in an array at intervals. The partition 14 divides the box into three parallel chambers, namely the first chamber 5, the second chamber 6 and the third chamber 7. The three chambers are kept ventilated through the air outlets, and the bottoms of the first chamber 5, the second chamber 6 and the third chamber 7 are kept connected through the drainage channel 20.

[0034] The filter screen 14 is equipped with a water pipe at its upper end for cleaning dust on the filter screen 14. By adding a water pipe at the upper end of the filter screen 14, the entire filter screen 14 is kept moist by contact with water flow. The moist filter screen 14 can not only adsorb and filter the incoming air, but also adsorb dust on the moist filter screen 14. Since the filter screen 14 is vertically arranged in the first chamber 5, when a lot of dust is adsorbed on the filter screen 14 over time, it will flow downwards and detach from the filter screen 14, keeping the filter screen 14 clean. The filter screen 14 in the second chamber 6 can achieve a better dust removal effect.

[0035] The working principle of this utility model is as follows:

[0036] Dust-laden air from the mine working face enters the system through air inlet 1, and passes through the dust removal module and hydrogen sulfide detection module in sequence to complete the dust removal and hydrogen sulfide removal operations, resulting in treated air. The treated air then enters the mine working face through air outlet 4. The dust removal module is equipped with a first chamber 5, a second chamber 6, and a third chamber 7, which respectively perform the first aerosolization, filtration, and second aerosolization operations on the dusty air, achieving a high-quality dust interception effect. The dust-free air then enters the hydrogen sulfide monitoring module 3, which is equipped with a sensor 10, an alarm device 13, an alkaline aerosol component 11, and a controller 12. The sensor 10 detects the concentration of hydrogen sulfide and transmits the monitoring results to the controller 12. The controller 12 controls the concentration of alkaline aerosol generated by the alkaline aerosol component to ensure that the hydrogen sulfide in the air is fully and quickly neutralized. At the same time, if the detected concentration is too high and exceeds the national standard for hydrogen sulfide concentration in coal mine working faces, the controller 12 controls the alarm device 13 to issue an audible and visual alarm to ensure that workers are in a safe working environment.

[0037] Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the protection scope of this application. Therefore, the protection scope of this application should be determined by the scope of the claims.

Claims

1. A coal face dust and hydrogen sulphide control system comprising, include: Air inlet, dust removal module, hydrogen sulfide monitoring module, and air outlet; The dust removal module includes a housing, in which two partitions are provided to divide the housing into a first chamber, a second chamber, and a third chamber. The second chamber is equipped with a filter screen for filtering out dust in the air. The first chamber and the third chamber are equipped with aerosol components for intercepting and setting dust in the air. The hydrogen sulfide monitoring module includes a bellows, in which a sensor, an alkaline aerosol component, and a controller are installed. The sensor is used to determine whether hydrogen sulfide is present in the air and to determine the concentration of hydrogen sulfide. It is also connected to an alarm device that issues an alarm signal when the concentration exceeds a threshold. The alkaline aerosol component is used to generate alkaline spray to neutralize the hydrogen sulfide, and the concentration of the alkaline spray is adjusted according to the concentration monitored by the sensor. The air inlet is connected to one end of the dust removal module, the other end of the dust removal module is connected to one end of the hydrogen sulfide monitoring module, and the other end of the hydrogen sulfide monitoring module is connected to the air outlet. The first chamber, the second chamber, the third chamber, and the bellows are arranged side by side. The aerosol assembly is located on top of the first chamber and the third chamber, and the alkaline aerosol assembly is located on top of the bellows.

2. The coal face dust and hydrogen sulfide control system of claim 1, wherein, Both the aerosol assembly and the alkaline aerosol assembly include a water tank, a water pump, a spray pipe, and nozzles, with the nozzles arranged in an array at intervals on the spray pipe.

3. The coal mining face dust and hydrogen sulfide control system of claim 1, wherein, A support rod is vertically installed at the center of the bottom surface of the air box, and a horizontal mounting rod is provided on the support rod for mounting the sensor.

4. The coal mining face dust and hydrogen sulfide control system of claim 1, wherein, The controller receives signals from the sensor and controls the activation and deactivation of the alarm device based on the received signals. The alarm device is located on the side of the bellows and is an audible and visual alarm device. When the alarm device is activated, it emits a warning sound and the alarm light illuminates.

5. The coal mining face dust and hydrogen sulfide control system of claim 1, wherein, Four connecting rods are vertically arranged on the top surface of the box and the bellows. Connecting blocks are fixedly connected to the connecting rods. Connecting holes are opened on the top surface of the connecting blocks. The connecting rods, connecting blocks and connecting holes are used to fix the bellows and the box.

6. The coal mining face dust and hydrogen sulfide control system of claim 1, wherein, The controller receives the signal from the sensor and adjusts the alkaline spray concentration.

7. The coal mining face dust and hydrogen sulfide control system of claim 1, wherein, The filter screen is vertically positioned at the center of the second chamber.

8. The coal mining face dust and hydrogen sulfide control system of claim 1, wherein, The partition plate has air outlet holes arranged in an array at intervals.

9. The coal mining face dust and hydrogen sulfide control system of claim 1, wherein, The filter screen is equipped with a water pipe at the upper end for cleaning dust from the filter screen.

Images