An automatic mine underground water mist spray dust fall system

Abstract

The utility model discloses a kind of mine underground automatic water mist spray dust fall systems, belong to mine dust removal technical equipment field, solve the existing mine underground dust removal mode not completely, water is easy to accumulate in dust removal process, there is the problem of big security risk.The utility model includes with the annular water pipe and PLC controller of mine top matching adaptation, multiple atomizing nozzles are evenly provided on annular water pipe, one end of annular water pipe is connected with water supply pipe, solenoid valve is equipped on water supply pipe, high-pressure pump is connected on water supply pipe, another end of annular water pipe is connected with drain pipe, multiple smoke dust sensors are also equipped on annular water pipe, PLC controller is connected with solenoid valve and smoke dust sensor.The utility model structure is simple, system is stable, can satisfy the requirement of dust fall in underground main roadway, sectional road, sectional ramp, fan station, application range is wide, especially suitable for underground main haulage roadway, air return, stope and other air quality bad working place, avoid dust pollution harm employee health.

Description

Technical Field

[0001] This utility model belongs to the field of mining dust removal technology and equipment, specifically relating to an automatic water mist spray dust suppression system for underground mines. Background Technology

[0002] As mineral resource development progresses to deeper levels, the environmental challenges faced by underground mining become increasingly prominent. With the rapid decrease in mining depth and the increase in horizontal mining sections, short-circuit airflow occurs in some areas of the underground return ventilation system, weakening its return ventilation capacity and preventing the timely removal of polluted air to the surface. Large amounts of dust remain suspended in the underground tunnels, resulting in poor air quality, seriously endangering the health of underground workers, significantly increasing their risk of occupational diseases, and, in severe cases, affecting the normal passage of underground transport vehicles and pedestrians.

[0003] Currently, water trucks are commonly used to spray water on the roadway surface to suppress dust, while ordinary low-pressure water mist is used in some areas to reduce dust generation in the roadway and decrease dust pollution generated by vehicles during operation. While this method can reduce surface dust to some extent, it is ineffective at suppressing dust suspended in the roadway space, resulting in unsatisfactory practical results. Furthermore, water truck spraying and low-pressure water mist dust suppression can cause water accumulation in the roadway, increasing the risk of vehicles and pedestrians slipping, falling, and other accidents on flooded slopes, posing a safety hazard. Utility Model Content

[0004] The purpose of this utility model is to provide an automatic water mist spray dust suppression system for underground mines, in order to solve the problems of incomplete dust removal in existing underground mines, water accumulation during the dust removal process, and significant safety hazards.

[0005] The technical solution of this utility model is: an automatic water mist spray dust suppression system for underground mines, including a ring-shaped water pipe adapted to the top of the mine roadway and a PLC controller. Multiple atomizing nozzles are evenly arranged on the ring-shaped water pipe. One end of the ring-shaped water pipe is connected to a water supply pipe, which is equipped with a solenoid valve and a high-pressure pump. A pressure sensor is also installed on the water supply pipe. The other end of the ring-shaped water pipe is connected to a drain pipe, which is also equipped with multiple dust sensors. The PLC controller is connected to the pressure sensor, the solenoid valve, and the dust sensors.

[0006] As a further improvement of this utility model, a filter is provided between the solenoid valve and the high-pressure pump to achieve precise filtration of the dust suppression water supply.

[0007] As a further improvement of this utility model, the filter is equipped with a drain valve, which can drain the water at the front end of the water supply pipe when not in use, thus avoiding excessive pressure in the water supply pipe.

[0008] As a further improvement of this utility model, a drain valve is provided on the drain pipe to prevent freezing inside the annular water pipe.

[0009] As a further improvement of this utility model, the PLC controller includes an audible and visual alarm device.

[0010] The beneficial effects of this utility model are: 1. This utility model uses a high-pressure pump in conjunction with an atomizing nozzle at the top of the tunnel to achieve dust suppression in the tunnel by using high-pressure atomized water spray. The water mist can treat the dust-laden gas in the tunnel, and the high-pressure atomized water spray can achieve micronization of the water mist, which significantly improves the dust suppression efficiency, reduces water consumption, and has a good atomization effect.

[0011] 2. This utility model adopts a PLC controller. By setting time, pressure data and dust data, it realizes the automatic dust suppression work in the tunnel. The PLC controller controls the working status of the water atomizing nozzles based on the real-time data feedback and issues operation indication signals to achieve the purpose of automatically controlling the dust suppression device.

[0012] 3. This utility model also filters the water entering the annular water pipe in a timely manner through a filter to prevent impurities from clogging the atomizing nozzle. At the same time, a drain valve is set to prevent excessive pressure in the pipeline. Equipment maintenance can be completed simply by replacing the filter element regularly, which effectively extends the service life of the entire dust suppression device.

[0013] 4. This utility model has a simple structure and a stable system, which can meet the dust reduction requirements of main underground roadways, segmented roadways, inclined ramps, and ventilation stations. It has a wide range of applications, especially suitable for workplaces with poor air quality such as main underground transport roadways, return airways, and mining areas, thus avoiding dust pollution that could harm the health of employees. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] In the diagram: 1-Drain valve; 2-Filter; 3-Pressure sensor; 4-Solenoid valve; 5-Annular water pipe; 6-Atomizing nozzle; 7-Drain valve; 8-Water supply pipe; 9-Drain pipe; 10-PLC controller; 11-Dust sensor; 12-High-pressure pump. Detailed Implementation

[0016] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0017] Example 1 like Figure 1As shown, an automatic water mist spray dust suppression system for underground mines includes an annular water pipe 5 adapted to the top of the mine roadway and a PLC controller 10. Multiple atomizing nozzles 6 are evenly arranged on the annular water pipe 5. One end of the annular water pipe 5 is connected to a water supply pipe 8, which is equipped with a solenoid valve 4 and a high-pressure pump 12. A pressure sensor 3 is also installed on the water supply pipe 8. The other end of the annular water pipe 5 is connected to a drain pipe 9, which is also equipped with multiple dust sensors 11. The PLC controller 10 is connected to the pressure sensor 3, the solenoid valve 4, and the dust sensors 11.

[0018] A filter 2 is installed between the solenoid valve 4 and the high-pressure pump 12 to achieve precise filtration of the dust-reducing water supply.

[0019] The filter 2 is equipped with a drain valve 1, which can drain the water at the front end of the water supply pipe 8 when not in use, so as to avoid excessive pressure in the water supply pipe 8.

[0020] The drain pipe 9 is equipped with an air vent valve 7.

[0021] The PLC controller 10 includes an audible and visual alarm device.

[0022] In use, connect the water supply pipe 8 to the underground water supply pipeline, close the drain valve 7, and turn on the high-pressure pump 12 to pressurize the water supply. The pressure sensor 3 continuously collects pressure data to ensure that the atomizing nozzle 6 can achieve a high-pressure atomization effect. When the pressure sensor 3 reaches the required level, it transmits a signal to the PLC controller 10. The PLC controller 10 controls the solenoid valve 4 to open at regular intervals. Typically, a cycle is set to work for 10 minutes and rest for 10 minutes. After being pressurized, the water is atomized by the atomizing nozzle 6, achieving high-pressure atomization. This water mist can effectively reduce dust in the underground air while preventing water accumulation in the tunnel. When the pressure in the pipeline is too high, the PLC controller 10 issues an audible and visual alarm, requiring manual opening of the drain valve 7 to balance the pressure in the annular water pipe 5.

[0023] The dust sensor 11 on the annular water pipe 5 is constantly working to capture dust data in the underground air. When the dust sensor 11 detects an excessively high dust concentration, it transmits a data signal to the PLC controller 10. The PLC controller 10 immediately controls the solenoid valve 4 to open, thus reducing dust in the tunnel. High-pressure water enters the annular water pipe 5, and the atomizing nozzle 6 operates until the dust sensor 11 returns to normal. Then, the PLC controller 10 controls the solenoid valve 4 to close, entering a rest phase. The rest time is reset, and the work-rest cycle continues.

[0024] Staff can periodically check whether the system is operating normally by using the data recorded by the PLC controller 10, ensuring the normal operation of the automatic water mist spray dust suppression system in the mine.

Claims

1. An automatic water mist spraying dust suppression system for underground mines, characterized in that: The system includes a ring water pipe (5) adapted to the top of the mine roadway and a PLC controller (10). The ring water pipe (5) is evenly equipped with multiple atomizing nozzles (6). One end of the ring water pipe (5) is connected to a water supply pipe (8). The water supply pipe (8) is equipped with a solenoid valve (4). The water supply pipe (8) is connected to a high-pressure pump (12). The water supply pipe (8) is also equipped with a pressure sensor (3). The other end of the ring water pipe (5) is connected to a drain pipe (9). The ring water pipe (5) is also equipped with multiple dust sensors (11). The PLC controller (10) is connected to the pressure sensor (3), the solenoid valve (4) and the dust sensor (11).

2. The automatic water mist spraying dust suppression system for underground mines according to claim 1, characterized in that: A filter (2) is provided between the solenoid valve (4) and the high-pressure pump (12).

3. The automatic water mist spraying dust suppression system for underground mines according to claim 2, characterized in that: The filter (2) is equipped with a drain valve (1).

4. The automatic water mist spraying dust suppression system for underground mines according to claim 1, characterized in that: The drain pipe (9) is equipped with an air vent valve (7).

5. An automatic water mist spraying dust suppression system for underground mines according to any one of claims 1-4, characterized in that: The PLC controller (10) includes an audible and visual alarm device.

Images