Drilling blowout prevention and dust removal system capable of automatically adjusting spraying amount

Abstract

The utility model discloses a drilling blowout prevention dust removal system capable of automatically adjusting spray quantity, which comprises a dust removal box, a dust detector, a water supply pipe, a nozzle and an electromagnetic water pressure regulating valve, an opening is arranged at the top of the dust removal box and is used for connecting a gas pumping and discharging pipe, and the dust detector is arranged on one side of the gas pumping and discharging pipe close to the dust removal box. The dust detector is connected with the processing module, and the processing module sends a signal for changing the water pressure according to a detection result of the dust detector; the water supply pipe is arranged in the dust removal box and communicated with an external water source, and a plurality of nozzles are arranged on the water supply pipe at intervals; the electromagnetic water pressure regulating valve is arranged on a pipeline through which the water supply pipe is communicated with an external water source, is electrically connected with the processing module and is used for receiving a water pressure change signal of the processing module and further changing the spraying amount of the spray head; according to the drilling dust removal device, the drilling dust removal effect is improved, the safety of drilling operation is improved, and the risk of environmental pollution is remarkably reduced.

Description

Technical Field

[0001] This utility model belongs to the field of coal mining technology, specifically relating to a borehole blowout prevention and dust suppression system with automatically adjustable spray volume. Background Technology

[0002] During underground drilling operations in coal mines, the confined space and severe restrictions can generate a large amount of dust in a short period of time, posing a significant threat to mine safety.

[0003] Coal dust generated during drilling can explode independently in the absence of gas, or it can cause a small-scale gas explosion to escalate into a mixed explosion of gas and coal dust, leading to a series of explosions. Simultaneously, coal dust poses a serious threat to miners' health; the number of miners disabled or killed by pneumoconiosis both domestically and internationally is staggering. Excessive dust concentration can impair vision, causing operational errors by construction workers. If the coal seam being drilled has a high content of carbon dioxide or gas and high pressure, it is highly likely to cause a blowout; without appropriate measures, this could lead to asphyxiation or excessive gas levels.

[0004] Existing drilling blowout prevention and dust suppression systems generally use spray dust suppression, but they have the problem that the spray volume cannot be adjusted according to the amount of coal dust generated during the drilling process, resulting in poor dust suppression effect. Utility Model Content

[0005] The purpose of this invention is to provide a drilling blowout prevention and dust removal system with automatically adjustable spray volume, in order to solve the problem that current drilling blowout prevention and dust removal systems cannot adjust the spray volume according to the amount of coal dust generated during the drilling process, resulting in poor dust removal effect.

[0006] The present invention adopts the following technical solution:

[0007] A drilling blowout prevention and dust suppression system with automatically adjustable spray volume includes:

[0008] The dust collector has openings on the left and right sides for the drill rod to pass through the dust collector from left to right and drill into the mine working face. The right side of the dust collector is fixed to the mine working face. The top of the dust collector has an opening for connecting the gas extraction pipe.

[0009] A dust detector is installed on the side of the gas extraction pipe near the dust collection box. The dust detector is electrically connected to the processing module, and the processing module sends a signal to change the water pressure based on the detection result of the dust detector.

[0010] Water supply pipe and nozzles: the water supply pipe is installed inside the dust collection box and connected to an external water source; the water supply pipe is arranged around the inner wall of the dust collection box; and several nozzles are arranged at intervals on the water supply pipe.

[0011] An electromagnetic water pressure regulating valve is installed on the pipeline connecting the water supply pipe to the external water source. The electromagnetic water pressure regulating valve is electrically connected to the processing module and is used to receive signals from the processing module to change the water pressure, further changing the spray volume of the nozzle and improving the dust removal effect of the dust collection box.

[0012] Furthermore, a dust filter is fixed at the top opening of the dust collection box, and the dust filter is connected to the gas extraction pipe through a quick-connect connector.

[0013] Furthermore, a slag guide pipe is fixed to the right opening of the dust collector via a flange. The slag guide pipe is used for the drill rod to be located inside the borehole and for the drill rod to pass through and insert into the borehole of the mine working face from left to right. In this way, a sealing layer is applied at the contact interface between the outer periphery of the slag guide pipe and the mine working face to prevent gas leakage.

[0014] Furthermore, the length of the slag guide pipe is 400mm to 500mm.

[0015] Furthermore, the dust collector has openings on both the front and rear sides, which are used to connect to the gas extraction pipe through bypass pipes, so that gas enters the gas extraction pipe through the front and rear openings and the top opening of the dust collector. The openings on the front and rear sides of the dust collector are located close to the drill hole.

[0016] Furthermore, a gas concentration detector is also installed on the side of the gas extraction pipe near the dust collection box, and the gas concentration detector is used to send the gas concentration to the processing module;

[0017] The processing module is used to send a signal to open the bypass pipeline based on the gas concentration of the gas concentration detector.

[0018] Both bypass pipelines are equipped with solenoid valves; the solenoid valves are used to open the bypass pipelines according to the signal from the processing module to open the bypass pipelines, thereby allowing gas to be discharged to the gas extraction pipeline through the two bypass pipelines.

[0019] Furthermore, the water supply pipe is positioned close to the borehole.

[0020] Furthermore, the dust collection box has an opening at the bottom for discharging slag.

[0021] The working principle of this utility model is as follows: First, the dust collection box is fixed to the mine working face, and the slag guide pipe is embedded in the mine working face, filling the gap between the slag guide pipe and the mine working face. The drill rod is then passed through the dust collection box and the slag guide pipe for drilling. During the drilling process, air or water is introduced into the hollow drill rod, and the slag is discharged from the outside of the drill rod and the gap between the drill rod and the inner wall of the borehole to the outside of the hole. At the borehole opening, the slag enters the dust collection box through the slag guide pipe. Methane is extracted through the methane extraction pipe at the top opening of the dust collection box, and the slag falls downwards and is discharged and collected from the bottom opening of the dust collection box. By installing a dust detector on the side of the methane extraction pipe near the dust collection box, the detection results can be sent to the processing module in a timely manner. When the dust content in the methane exceeds 0.5 mg / m³, the detector will detect the dust. 3 The processing module will adjust the electromagnetic water pressure regulating valve to increase the spray volume of the nozzles and enhance the dust removal effect in the dust collection box; when the dust content in the gas is below 0.5 mg / m³ 3 The processing module will lower the electromagnetic water pressure regulating valve to reduce the spray volume of the nozzles and reduce costs until the electromagnetic water pressure regulating valve is adjusted to a suitable opening to achieve the ideal dust removal effect.

[0022] Furthermore, by setting openings on both the front and rear sides of the dust collector and connecting them to the gas extraction pipe via bypass pipes, gas enters the gas extraction pipe through the front and rear openings and the top opening of the dust collector, respectively. The gas extraction pipe is also equipped with a gas concentration detector, which sends the gas concentration to the processing module. The processing module sends a signal to open the bypass pipe based on the gas concentration detected by the gas concentration detector. Both bypass pipes are equipped with solenoid valves to open the bypass pipes according to the signal from the processing module. When the gas content exceeds 0.5%, the solenoid valves of the bypass pipes are opened, allowing the gas to be discharged through the two bypass pipes to the gas extraction pipe, preventing the gas content from exceeding the limit.

[0023] The beneficial effects of this utility model are:

[0024] This invention, by installing a dust detector, water supply pipe, and nozzles inside the dust collection box, can promptly send dust detection results to the processing module. When the dust level in the gas exceeds the limit, the processing module will increase the electromagnetic water pressure regulating valve to increase the spray volume of the nozzles and enhance the dust collection effect inside the dust collection box. When the dust content in the gas is low, the processing module will decrease the electromagnetic water pressure regulating valve to reduce the spray volume of the nozzles and reduce costs, until the electromagnetic water pressure regulating valve is adjusted to a suitable opening to achieve the ideal dust collection effect.

[0025] This invention extends the length of the slag guide pipe to 400mm-500mm, allowing it to penetrate deep into the borehole. This prevents gas leakage caused by damage to the borehole opening during slag removal due to the soft coal wall. Furthermore, by filling the gap between the slag guide pipe and the mine working face, a sealing barrier is formed, thereby blocking the gas leakage path. This not only improves the safety of drilling operations but also significantly reduces the risk of environmental pollution.

[0026] This invention provides an opening on both the front and rear sides of the dust collector and connects it to a gas extraction pipe via a bypass pipeline. A gas concentration detector is also installed on the side of the gas extraction pipe near the dust collector. The processing module can control the opening and closing of the bypass pipeline based on the gas concentration detected by the gas concentration detector, which can prevent gas from exceeding the limit while also reducing costs and increasing efficiency. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of this utility model;

[0028] The components include: 1. Dust collector, 3. Gas extraction pipe, 4. Dust detector, 5. Water supply pipe, 6. Nozzle, 7. Electromagnetic water pressure regulating valve, 8. Dust filter, 9. Slag guide pipe, and 10. Gas concentration detector. Detailed Implementation

[0029] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0030] This utility model provides a drilling spray prevention and dust removal system with automatically adjustable spray volume, such as... Figure 1 As shown, it includes a dust collection box 1, a dust detector 4, a water supply pipe 5, a nozzle 6, and an electromagnetic water pressure regulating valve 7.

[0031] The dust collector 1 has openings on both sides for the drill rod to pass through from left to right and drill into the mine working face. The right side of the dust collector 1 is fixed to the mine working face. The top of the dust collector 1 has an opening for connecting to the gas extraction pipe 3. A dust filter 8 is fixed at the top opening of the dust collector 1, and the dust filter 8 is connected to the gas extraction pipe 3 through a quick-connect connector. The bottom of the dust collector 1 has an opening for discharging slag.

[0032] Dust detector 4 is installed on the side of gas extraction pipe 3 near dust collection box 1. Dust detector 4 is connected to processing module. Processing module sends a signal to change water pressure based on the detection result of dust detector 4.

[0033] The water supply pipe 5 is installed inside the dust collector 1 and connected to an external water source. The water supply pipe 5 is arranged around the inner wall of the dust collector 1. Several nozzles 6 are arranged at intervals on the water supply pipe 5. The water supply pipe 5 is located near the borehole.

[0034] The electromagnetic water pressure regulating valve 7 is installed on the pipeline connecting the water supply pipe 5 to the external water source. The electromagnetic water pressure regulating valve 7 is electrically connected to the processing module and is used to receive the signal from the processing module to change the water pressure, further changing the spray volume of the nozzle 6 and improving the dust removal effect of the dust collection box 1.

[0035] In some embodiments, the dust collector 1 has openings on the front and rear sides and is used to connect to the gas extraction pipe 3 through a bypass pipe, so that gas enters the gas extraction pipe 3 through the front and rear openings and the top opening of the dust collector 1 respectively. The openings on the front and rear sides of the dust collector 1 are located close to the borehole.

[0036] In some embodiments, a gas concentration detector 10 is also provided on the side of the gas extraction pipe 3 near the dust collection box 1. The gas concentration detector 10 is used to send the gas concentration to the processing module. The processing module is used to send a signal to open the bypass pipe according to the gas concentration of the gas concentration detector 10. Solenoid valves are provided on both bypass pipes. The solenoid valves are used to open the bypass pipes according to the signal to open the bypass pipes from the processing module, so that the gas is discharged to the gas extraction pipe 3 through the two bypass pipes.

[0037] The dust collector 1 has a slag guide pipe 9 fixed to the right side opening via a flange. The slag guide pipe 9 is located inside the borehole and is used for the drill rod to pass through from left to right and insert into the borehole of the mine working face. A sealing layer is applied at the contact interface between the outer periphery of the slag guide pipe 9 and the mine working face to prevent gas leakage. The length of the slag guide pipe 9 is 400mm to 500mm.

[0038] A ring-shaped rubber pad is fixed at the left opening of the dust collector 1. The rubber pad is used to fit the drill rod and seal the interface between the drill rod and the left opening of the dust collector 1 to prevent gas from overflowing.

[0039] The working principle of this utility model is as follows: First, the dust collection box 1 is fixed to the working face of the mine. The slag guide pipe 9 is inserted into the borehole of the working face of the mine, filling the gap between the slag guide pipe 9 and the working face of the mine. The drill rod is then passed through the dust collection box 1 and the slag guide pipe 9 for drilling. During the drilling process, air or water is introduced into the hollow drill rod, and the slag is discharged from the outside of the drill rod and the gap between the drill rod and the inner wall of the borehole to the outside of the hole. At the borehole opening, the slag enters the dust collection box 1 through the slag guide pipe 9. The gas is extracted through the gas extraction pipe 3 at the top opening of the dust collection box 1, and the slag falls downward and is discharged and collected from the bottom opening of the dust collection box 1. By setting a dust detector 8 on the side of the gas extraction pipe 3 near the dust collection box 1, the detection results can be sent to the processing module in a timely manner. When the dust content in the gas exceeds 0.5 mg / m³, the detector will detect the dust. 3 The processing module will adjust the electromagnetic water pressure regulating valve 7 to increase the spray volume of the nozzle 6 and enhance the dust removal effect in the dust collection box 1; when the dust content in the gas is lower than 0.5 mg / m³ 3The processing module will lower the electromagnetic water pressure regulating valve 7, reduce the spray volume of the nozzle 6, and reduce costs until the electromagnetic water pressure regulating valve is adjusted to a suitable opening to achieve the ideal dust removal effect.

[0040] Furthermore, by setting openings on the front and rear sides of the dust collector 1 and connecting them to the gas extraction pipe 3 via bypass pipes, gas enters the gas extraction pipe 3 through the front and rear openings and the top opening of the dust collector 1, respectively. The gas extraction pipe 3 is also equipped with a gas concentration detector 10, which sends the gas concentration to the processing module. The processing module sends a signal to open the bypass pipe based on the gas concentration of the gas concentration detector 10. Both bypass pipes are equipped with solenoid valves for opening the bypass pipes according to the signal from the processing module. When the gas content exceeds 0.5%, the solenoid valves of the bypass pipes are opened, allowing the gas to be discharged to the gas extraction pipe 3 through the two bypass pipes, preventing the gas from exceeding the limit.

[0041] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A drilling blowout prevention and dust suppression system with automatically adjustable spray volume, characterized in that, include: Dust collector (1), the dust collector (1) has openings on the left and right sides and is used for the drill rod to pass through the dust collector (1) from left to right and drill into the mine working face. The right side of the dust collector (1) is fixed on the mine working face. The top of the dust collector (1) has an opening and is used to connect the gas extraction pipe (3). Dust detector (4) is installed on the side of the gas extraction pipe (3) near the dust collection box (1). The dust detector (4) is electrically connected to the processing module. The processing module sends a signal to change the water pressure according to the detection result of the dust detector (4). Water supply pipe (5) and nozzle (6), the water supply pipe (5) is installed inside the dust removal box (1) and connected to the external water source, the water supply pipe (5) is arranged around the inner wall of the dust removal box (1), and several nozzles (6) are arranged at intervals on the water supply pipe (5); The electromagnetic water pressure regulating valve (7) is installed on the pipeline connecting the water supply pipe (5) to the external water source. The electromagnetic water pressure regulating valve (7) is electrically connected to the processing module and is used to receive the signal from the processing module to change the water pressure, further change the spray volume of the nozzle (6), and improve the dust removal effect of the dust removal box (1).

2. The drilling blowout prevention and dust suppression system with automatically adjustable spray volume according to claim 1, characterized in that... A dust filter (8) is fixed at the top opening of the dust collection box (1), and the dust filter (8) is connected to the gas extraction pipe (3) through a quick-connect connector.

3. A drilling blowout prevention and dust suppression system with automatically adjustable spray volume according to claim 2, characterized in that, The dust collector (1) has a slag guide pipe (9) fixed to the right side opening via a flange. The slag guide pipe (9) is located inside the borehole and is used for the drill rod to pass through from left to right and insert into the borehole of the mine working face. A sealing layer is applied at the contact interface between the outer periphery of the slag guide pipe (9) and the mine working face to prevent gas leakage.

4. A drilling blowout prevention and dust suppression system with automatically adjustable spray volume according to claim 3, characterized in that, The length of the slag guide pipe (9) is 400mm to 500mm.

5. A drilling blowout prevention and dust suppression system with automatically adjustable spray volume according to claim 1, characterized in that, The dust collector (1) has openings on both the front and rear sides and is used to connect to the gas extraction pipe (3) through a bypass pipe, so that the gas enters the gas extraction pipe (3) through the front and rear openings of the dust collector (1). The openings on the front and rear sides of the dust collector (1) are located close to the borehole.

6. A drilling blowout prevention and dust suppression system with automatically adjustable spray volume according to claim 5, characterized in that, A gas concentration detector (10) is also provided on the side of the gas extraction pipe (3) near the dust collector (1). The gas concentration detector (10) is used to send the gas concentration to the processing module. The processing module is used to send a signal to open the bypass pipeline based on the gas concentration of the gas concentration detector (10); Both bypass pipelines are equipped with solenoid valves; the solenoid valves are used to open the bypass pipelines according to the signal of the processing module to open the bypass pipelines, so that the gas is discharged to the gas extraction pipe (3) through the two bypass pipelines.

7. A drilling blowout prevention and dust suppression system with automatically adjustable spray volume according to claim 1, characterized in that, The water supply pipe (5) is located near the borehole.

8. A drilling blowout prevention and dust suppression system with automatically adjustable spray volume according to claim 1, characterized in that, The dust collector (1) has an opening at the bottom for discharging slag.

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