A hydrogen sulfide diversion and emission reduction device for a coal mine goaf and a use method thereof

Abstract

The application discloses a coal mine goaf hydrogen sulfide flow guide emission reduction device, relates to the technical field of goaf flow guide, and comprises a vehicle body, the lower end face of which is fixed with a chassis, and a plurality of driving wheels are arranged on the chassis; four unfolding assemblies are symmetrically arranged at the four corner positions of the vehicle body; a flow guide assembly is fixed at one end of the unfolding assembly away from the vehicle body; a gas storage bin is fixed in the vehicle body, and an electric pump is arranged on one side of the gas storage bin; and a flow guide pipe, which is a flexible pipe, is communicated at one end with the electric pump. The application also provides a use method of the coal mine goaf hydrogen sulfide flow guide emission reduction device. The flow guide system is integrated in the movable vehicle body, and is matched with the unfolding assembly and the flexible flow guide pipe, so that the coal mine goaf hydrogen sulfide pumping device can be flexibly moved along with the coal mining working face, the long-term occupation of the roadway space by the traditional fixed pipe network is eliminated, the system layout period is greatly shortened, and the mining and excavation connection efficiency is remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of hazardous gas control technology, specifically to a hydrogen sulfide diversion and emission reduction device for coal mine goaf areas and its usage method. Background Technology

[0002] During coal mining, hydrogen sulfide gas is easily generated in the goaf due to geological fracturing, microbial reactions, and oxidation of sulfur-containing minerals. Hydrogen sulfide is highly toxic, corrosive, and flammable. Once it accumulates in the goaf and leaks, it will seriously threaten the lives of underground workers.

[0003] Existing hydrogen sulfide diversion systems in goaf areas typically employ fixed pipeline structures, which present the following problems: long pipeline installation cycles and low construction efficiency; frequent pipeline modifications are required during goaf advancement; the fixed support structure is bulky and cannot move with the working face; the diversion system has low reusability and high cost; and it has poor adaptability in complex goaf environments.

[0004] To address the above problems, this invention provides a hydrogen sulfide diversion and emission reduction device for coal mine goaf areas and its usage method, thereby solving the aforementioned issues. Summary of the Invention

[0005] To achieve the above objectives, the present invention provides the following technical solution: a hydrogen sulfide diversion and emission reduction device for coal mine goaf areas, comprising: The vehicle body has a chassis fixed to its lower end, and multiple drive wheels are mounted on the chassis; The unfolding components are configured in four parts, symmetrically arranged at the four corners of the vehicle body; A flow guiding component is fixed to the end of the deployment component away from the vehicle body; The gas storage compartment is fixed inside the vehicle body, and an electric pump is installed on one side of it; The guide tube is a flexible tube, with one end connected to the electric pump and the other end connected to the guide assembly, and the guide tube passes through the deployment assembly.

[0006] Furthermore, preferably, four take-up reels are rotatably arranged inside the vehicle body, and the four take-up reels correspond one-to-one with the four deployment components, and the guide pipe is taken in and out through the take-up reels.

[0007] Further, preferably, the unfolding component includes: A turntable is rotatably mounted on the vehicle body; The first rocker arm is hinged to the turntable; The second rocker arm is hinged to the first rocker arm using a connector; The telescopic arm is slidably disposed within the second rocker arm; The first rocker arm, the second rocker arm, and the telescopic arm are all hollow structures.

[0008] Further, preferably, the flow guiding component includes: A connecting cylinder is fixed to the lower end face of the telescopic arm; A connecting disc is fixed inside the connecting cylinder, and the connecting disc has multiple connecting holes. A pressure boosting cylinder is fixed to the lower end face of the connecting cylinder; A booster fan is rotatably mounted below the connecting plate and located inside the booster cylinder; The flow guide chamber is fixed on the pressurizing cylinder; The base plate is detachably mounted on the lower end face of the flow guide chamber; The pulse assembly is fixed between the booster cylinder and the base plate.

[0009] Furthermore, preferably, the sidewall of the flow guide chamber is provided with multiple flow guide holes, and the inner wall of the flow guide chamber is attached with a filter screen.

[0010] Furthermore, preferably, the electric pump operates alternately, first performing suction and then blowing. During suction, the airflow drives the booster fan to rotate to assist suction, and during blowing, the airflow drives the booster fan to rotate in the opposite direction to assist blowing.

[0011] Further, preferably, the pulse component includes: The pulse cylinder is fixed between the booster cylinder and the base plate, and its side wall has multiple flow holes; A fixing plate is fixed to the lower end face of the pulse cylinder; The pulse disk is slidably disposed within the fixed disk, and springs are provided between the fixed disks.

[0012] This invention also provides a method for using the aforementioned hydrogen sulfide diversion and emission reduction device for coal mine goaf areas, comprising the following steps: S1. Drive the vehicle to a safe area in the transport roadway or working face near the goaf, apply the parking brake and ensure that the chassis is on the ground. Based on the collapse pattern, distribution of remaining coal pillars and hydrogen sulfide detection data inside the goaf, plan the extension angle and length of each deployment component. S2. Start the four turntables to rotate to the target azimuth angle respectively, and then drive the first rocker arm to swing outward and unfold. Adjust the pitch angle of the second rocker arm through the connector, so that the telescopic arm slides outward from the inside of the second rocker arm and sends the guide component fixed at the end of the telescopic arm into the predetermined pumping position in the goaf area. During the extension process, the take-up reel in the vehicle body releases the guide pipe simultaneously. S3. Start the electric pump and set it to suction operation. A negative pressure is formed in the gas storage chamber. Hydrogen sulfide gas in the goaf is drawn into the guide chamber through the guide hole. After being initially intercepted by the filter screen, it enters the pressurization cylinder. When the airflow flows through the connecting hole of the connecting plate, it drives the pressurization fan to rotate in the forward direction to assist in pressurizing the gas. The accelerated airflow flows into the gas storage chamber through the guide pipe for temporary storage. During operation, monitor the changes in the pumping flow rate and the pressure of the gas storage chamber to determine whether the system is in normal working condition. S4. When the exhaust flow rate drops below 70% of the initial value, switch the electric pump to the blowing mode. The airflow flows in reverse through the guide pipe into the booster cylinder, driving the booster fan to rotate in reverse, forming a reverse blowing on the filter screen. At the same time, the reverse airflow enters the pulse cylinder and pushes the pulse disc to compress the spring. When the airflow pressure fluctuates or pauses intermittently, the spring resets, and the pulse disc slides back and forth in the fixed disc, generating intermittent pulsating airflow impact, causing the coal dust and sulfide crystals attached to the filter screen surface to fall off under the alternating impact. After the blowing operation lasts for 1 to 3 minutes, switch back to the suction mode and observe the flow rate recovery. If necessary, repeat the above back-blowing operation. S5. When the coal mining face advances forward or the working position needs to be changed, first stop the electric pump, start the take-up reel to rotate in the opposite direction to wind up the guide pipe and put it back in place, then retract the telescopic boom, and then retract the second rocker arm and the first rocker arm in sequence to completely pull the guide component out of the goaf and reset it to the periphery of the vehicle body; release the parking brake, drive the vehicle body to the new working face or retreat to a safe area to complete the entire set of operation procedures.

[0013] Compared with the prior art, the present invention provides a hydrogen sulfide diversion and emission reduction device for coal mine goaf areas and its usage method, which has the following beneficial effects: 1. This invention integrates the diversion system into a mobile vehicle body, and with the deployment components and flexible diversion pipes, it enables the goaf hydrogen sulfide extraction device to move flexibly with the coal mining face, eliminating the long-term occupation of roadway space by traditional fixed pipelines, greatly shortening the system deployment cycle, and significantly improving the efficiency of mining and excavation connection.

[0014] 2. The deployment assembly adopts a multi-stage articulated rocker arm and telescopic arm structure. Each arm is hollow and has a built-in guide tube. With the help of the take-up reel, it can automatically extend and position the extraction port in the goaf area, and effectively protect the pipeline from being squeezed and entangled, ensuring the continuity of operation.

[0015] 3. The flow guiding component integrates a booster fan and a pulse component, working in conjunction with an electric pump in an alternating operation mode of suction and blowing. During suction, the booster fan rotates forward to enhance the negative pressure suction capacity, while during blowing, it rotates in reverse to assist in clearing blockages. The pulse component generates intermittent pulsating airflow in blowing mode, creating alternating impacts on the filter screen, effectively alleviating filter screen blockage caused by coal dust and sulfide crystallization, achieving online self-cleaning of the filter media, and ensuring stable suction efficiency under long-term operation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the unfolding component structure of the present invention; Figure 3 This is a schematic diagram of the flow guiding component structure of the present invention; Figure 4 This is a schematic diagram of the pulse component structure of the present invention; In the image: 1. Vehicle body; 2. Chassis; 3. Drive wheels; 4. Deployment assembly; 5. Airflow guide assembly; 41. Turntable; 42. First rocker arm; 43. Connector; 44. Second rocker arm; 45. Telescopic arm; 51. Connecting cylinder; 52. Connecting disc; 53. Pressure booster cylinder; 54. Pressure booster fan; 55. Flow guide chamber; 56. Base plate; 57. Pulse assembly; 571. Pulse cylinder; 572. Fixed disc; 573. Pulse disc; 574. Spring. Detailed Implementation

[0017] Reference Figures 1-4 The present invention provides the following technical solutions: Example

[0018] A hydrogen sulfide diversion and emission reduction device for coal mine goaf areas, comprising: The vehicle body 1 has a chassis 2 fixed to its lower end face, and multiple drive wheels 3 are provided on the chassis 2; The unfolding component 4 is configured as four, symmetrically arranged at the four corners of the vehicle body 1; The flow guiding component 5 is fixed to the end of the unfolding component 4 away from the vehicle body 1; An air storage chamber is fixed inside the vehicle body 1, and an electric pump is installed on one side of it; The guide tube is a flexible tube, with one end connected to the electric pump and the other end connected to the guide assembly 5, and the guide tube passes through the deployment assembly 4.

[0019] In this embodiment, four take-up reels are rotatably arranged inside the vehicle body 1. The four take-up reels correspond one-to-one with the four unfolding components 4, and the guide pipe is taken up and extended through the take-up reels.

[0020] In this embodiment, the unfolding component 4 includes: Turntable 41 is rotatably mounted on the vehicle body 1; The first rocker arm 42 is hinged to the turntable 41; The second rocker arm 44 is hinged to the first rocker arm 42 by a connector 43; The telescopic arm 45 is slidably disposed within the second rocker arm 44; The first rocker arm 42, the second rocker arm 44, and the telescopic arm 45 are all hollow structures.

[0021] It should be noted that the turntable 41, the first rocker arm 42 and the second rocker arm 44 all use damped rotating shafts, which facilitates manual positioning and adjustment of the flow guide assembly 5.

[0022] In another embodiment, the rotational positions of turntable 41, first rocker arm 42 and second rocker arm 44 can be equipped with motors, thereby enabling automatic deployment and adjustment.

[0023] In a preferred embodiment, the flow guiding component 5 includes: The connecting cylinder 51 is fixed to the lower end face of the telescopic arm 45; A connecting disc 52 is fixed inside the connecting cylinder 51, and the connecting disc 52 has multiple connecting holes. The pressure boosting cylinder 53 is fixed to the lower end face of the connecting cylinder 51; The booster fan 54 is rotatably disposed below the connecting plate 52 and located inside the booster cylinder 53; The flow guide chamber 55 is fixed on the pressure booster cylinder 53; The base plate 56 is detachably mounted on the lower end face of the flow guide chamber 55; The pulse assembly 57 is fixed between the booster cylinder 53 and the base plate 56.

[0024] Among them, the booster fan 54 can assist in boosting the exhaust flow, making up for the resistance loss during transportation, and ensuring the stability of the exhaust efficiency during long-term continuous operation.

[0025] Preferably, the side wall of the flow guide chamber 55 is provided with a plurality of flow guide holes, and the inner wall of the flow guide chamber 55 is attached with a filter screen.

[0026] In other words, the side guide hole structure allows gas to be drawn in from the side wall, avoiding the intake of too many impurities. It can also quickly guide and adsorb hydrogen sulfide gas appearing on the working face downwards, preventing it from escaping. The filter screen intercepts particulate matter such as coal dust and sulfide crystals, preventing impurities from entering the guide pipe and gas storage chamber, protecting the safe operation of downstream equipment, and at the same time avoiding the accumulation of high-concentration dust in the pipe.

[0027] Preferably, the electric pump operates alternately, first performing suction and then blowing. During suction, the airflow drives the booster fan 54 to rotate to assist suction, and during blowing, the airflow drives the booster fan 54 to rotate in the opposite direction to assist blowing.

[0028] Among them, the electric pump operates alternately, realizing dual-mode operation of one machine. In suction mode, it enhances the negative pressure pumping capacity, and in blowing mode, it uses reverse airflow to regenerate the filter screen online without stopping the machine for disassembly and cleaning. The booster fan 54 can provide airflow power assistance in both forward and reverse rotation, which improves energy utilization efficiency and extends the filter screen maintenance cycle.

[0029] In a preferred embodiment, the pulse component 57 includes: The pulse cylinder 571 is fixed between the booster cylinder 53 and the base plate 56, and its side wall is provided with multiple flow holes; The fixing plate 572 is fixed to the lower end face of the pulse cylinder 571; The pulse disk 573 is slidably disposed within the fixed disk 572, and a spring 574 is disposed between the fixed disks 572.

[0030] In other words, in the blowing mode, the reverse airflow drives the pulse disk 573 to compress the spring 574 and reciprocate, generating an intermittent pulsating airflow impact effect. This enhances the disturbance intensity of the back-blowing cleaning, causing the sticky sulfide crystals and fine coal dust that are difficult to remove from the filter screen surface to fall off under the action of alternating impact force, significantly improving the cleaning effect and ensuring the long-term stable operation of the system.

[0031] Example 2

[0032] The method of using the hydrogen sulfide diversion and emission reduction device in the coal mine goaf as described in Example 1 specifically includes the following steps: S1. Drive vehicle 1 to a safe area of ​​transport roadway or working face near the goaf, apply parking brake and ensure chassis 2 is on the ground. Based on the collapse pattern, distribution of remaining coal pillars and hydrogen sulfide detection data inside the goaf, plan the extension angle and length of each deployment component 4 (based on the collapse pattern, distribution of remaining coal pillars and hydrogen sulfide detection data inside the goaf, preliminarily determine the spatial orientation and depth of the high concentration accumulation area, and plan the extension angle and length of each deployment component 4 based on this). S2. Start the four turntables 41 to rotate to the target azimuth angle respectively, and then drive the first rocker arm 42 to swing outward and unfold. Adjust the pitch angle of the second rocker arm 44 through the connector 43, so that the telescopic arm 45 slides outward from the second rocker arm 44 and sends the guide component 5 fixed at the end of the telescopic arm 45 into the predetermined pumping position in the goaf. During the extension process, the take-up reel in the vehicle body 1 releases the guide pipe simultaneously. S3. Start the electric pump and set it to suction operation. A negative pressure is formed in the gas storage chamber. Hydrogen sulfide gas in the goaf is drawn into the guide chamber 55 through the guide hole. After the filter screen initially intercepts coal dust and particulate matter, it enters the pressurization cylinder 53. When the airflow flows through the connecting hole of the connecting plate 52, it drives the pressurization fan 54 to rotate in the forward direction to assist in pressurizing the gas. The accelerated airflow flows into the gas storage chamber through the guide pipe for temporary storage. During operation, monitor the changes in the pumping flow rate and the pressure of the gas storage chamber to determine whether the system is in normal working condition. S4. When the exhaust flow rate drops below 70% of the initial value, switch the electric pump to the blowing mode. The airflow flows in reverse through the guide pipe into the booster cylinder 53, driving the booster fan 54 to rotate in reverse, forming a reverse blowing on the filter screen. At the same time, the reverse airflow enters the pulse cylinder 571, pushing the pulse disk 573 to compress the spring 574. When the airflow pressure fluctuates or pauses intermittently, the spring 574 resets, and the pulse disk 573 slides back and forth in the fixed disk 572, generating intermittent pulsating airflow impact, causing the coal dust and sulfide crystals attached to the filter screen surface to fall off under alternating impact. After the blowing operation lasts for 1 to 3 minutes, switch back to the suction mode and observe the flow recovery. If necessary, repeat the above back-blowing operation. S5. When the coal mining face advances forward or needs to be moved to a different working position, first stop the electric pump, start the take-up reel to rotate in reverse to wind up the guide pipe back into place, then retract the telescopic boom 45 in sequence, and then retract the second rocker arm 44 and the first rocker arm 42 to completely pull the guide component 5 out of the goaf and reset it to the vicinity of the vehicle body 1. Release the parking brake, drive the vehicle body 1 to the new working face or retreat to a safe area to complete the entire operation process.

[0033] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A hydrogen sulfide diversion and emission reduction device for coal mine goaf areas, characterized in that, include: The vehicle body (1) has a chassis (2) fixed to its lower end face, and multiple drive wheels (3) are provided on the chassis (2). The unfolding components (4) are configured as four, symmetrically arranged at the four corners of the vehicle body (1); A flow guide assembly (5) is fixed to one end of the deployment assembly (4) away from the vehicle body (1); An air storage chamber is fixed inside the vehicle body (1), and an electric pump is installed on one side of it; The guide tube is a flexible tube, with one end connected to the electric pump and the other end connected to the guide assembly (5), and the guide tube passes through the deployment assembly (4).

2. The hydrogen sulfide diversion and emission reduction device for coal mine goaf according to claim 1, characterized in that, The vehicle body (1) is equipped with four take-up reels that rotate within it. Each of the four take-up reels corresponds to one of the four unfolding components (4), and the guide pipe is retracted and extended through the take-up reels.

3. The hydrogen sulfide diversion and emission reduction device for coal mine goaf areas according to claim 1, characterized in that, The unfolding component (4) includes: A turntable (41) is rotatably mounted on the vehicle body (1); The first rocker arm (42) is hinged to the turntable (41); The second rocker arm (44) is hinged to the first rocker arm (42) by means of a connector (43); The telescopic arm (45) is slidably disposed within the second rocker arm (44); The first rocker arm (42), the second rocker arm (44), and the telescopic arm (45) are all hollow structures.

4. The hydrogen sulfide diversion and emission reduction device for coal mine goaf according to claim 3, characterized in that, The flow guiding component (5) includes: The connecting cylinder (51) is fixed to the lower end face of the telescopic arm (45); A connecting disc (52) is fixed inside the connecting cylinder (51), and the connecting disc (52) has multiple connecting holes. The booster cylinder (53) is fixed to the lower end face of the connecting cylinder (51); A booster fan (54) is rotatably disposed below the connecting plate (52) and located inside the booster cylinder (53); The flow guide chamber (55) is fixed on the booster cylinder (53); The base plate (56) is detachably disposed on the lower end face of the flow guide chamber (55); The pulse assembly (57) is fixed between the booster cylinder (53) and the base plate (56).

5. A hydrogen sulfide diversion and emission reduction device for coal mine goaf areas according to claim 4, characterized in that, The side wall of the flow guide chamber (55) is provided with multiple flow guide holes, and the inner wall of the flow guide chamber (55) is attached with a filter screen.

6. A hydrogen sulfide diversion and emission reduction device for coal mine goaf areas according to claim 4, characterized in that, The electric pump operates alternately, first performing suction and then blowing. During suction, the airflow drives the booster fan (54) to rotate to assist suction, and during blowing, the airflow drives the booster fan (54) to rotate in the opposite direction to assist blowing.

7. A hydrogen sulfide diversion and emission reduction device for coal mine goaf areas according to claim 4, characterized in that, The pulse component (57) includes: The pulse cylinder (571) is fixed between the booster cylinder (53) and the base plate (56), and its side wall is provided with multiple flow holes; A fixed plate (572) is fixed to the lower end face of the pulse cylinder (571); A pulse disk (573) is slidably disposed within the fixed disk (572), and a spring (574) is disposed between the fixed disks (572).

8. The method of using the hydrogen sulfide diversion and emission reduction device for coal mine goaf areas according to any one of claims 1-7, characterized in that, Includes the following steps: S1. Drive the vehicle (1) to a safe area of ​​the transport roadway or working face near the goaf, park the vehicle and ensure that the chassis (2) is on the ground. Based on the collapse pattern inside the goaf, the distribution of the remaining coal pillars and the hydrogen sulfide detection data, plan the extension angle and length of each deployment component (4). S2. Start the four turntables (41) to rotate to the target azimuth angle respectively, and then drive the first rocker arm (42) to swing outward and unfold. Adjust the pitch angle of the second rocker arm (44) through the connector (43) so that the telescopic arm (45) slides outward from the second rocker arm (44) and sends the guide component (5) fixed at the end of the telescopic arm (45) into the predetermined pumping position in the goaf area. During the extension process, the take-up reel in the vehicle body (1) releases the guide pipe simultaneously. S3. Start the electric pump and set it to suction operation. A negative pressure is formed in the gas storage chamber. Hydrogen sulfide gas in the goaf is drawn into the guide chamber (55) through the guide hole. After the filter screen initially intercepts coal dust and particulate matter, it enters the booster cylinder (53). When the airflow flows through the connecting hole of the connecting plate (52), it drives the booster fan (54) to rotate in the positive direction to assist in the pressurization of the gas. The accelerated airflow flows into the gas storage chamber through the guide pipe for temporary storage. During operation, monitor the changes in the pumping flow rate and the pressure of the gas storage chamber to determine whether the system is in normal working condition. S4. When the pumping flow rate drops below 70% of the initial value, switch the electric pump to the blowing operation mode. The airflow flows in reverse through the guide pipe into the booster cylinder (53), driving the booster fan (54) to rotate in reverse, forming a reverse blowing on the filter screen. At the same time, the reverse airflow enters the pulse cylinder (571) and pushes the pulse disk (573) to compress the spring (574). When the airflow pressure fluctuates or pauses intermittently, the spring (574) resets, and the pulse disk (573) slides back and forth in the fixed disk (572), generating intermittent pulsating airflow impact, causing the coal dust and sulfide crystals attached to the filter screen surface to fall off under alternating impact. After the blowing operation lasts for 1 to 3 minutes, switch back to the suction mode and observe the flow recovery. If necessary, repeat the above back-blowing operation. S5. When the coal mining face advances forward or the work position needs to be changed, first stop the electric pump, start the take-up reel to rotate in the opposite direction to wind up the guide pipe and put it back in place, then retract the telescopic arm (45), retract the second rocker arm (44) and the first rocker arm (42) in sequence, completely pull out the guide component (5) from the goaf area and reset it to the periphery of the vehicle body (1); release the parking brake, drive the vehicle body (1) to the new working face or retreat to a safe area to complete the whole set of work procedures.

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