Coal mine underground dust monitoring system

Abstract

An underground coal mine dust monitoring system comprises a looped network switch, a dust removal device controller, a distribution box, a dust concentration sensor, a liquid level sensor, a dust remover, a water guide pipe, a manual ball valve, an automatic back-flushing pollution discharge filter, a base, a trailer hook and universal wheels. According to the underground coal mine dust monitoring system, the dust concentration sensor, the liquid level sensor and the looped network switch are connected to the dust removal device controller through the distribution box, and the dust remover is directly connected to the dust removal device controller, so that local logic control is realized; the looped network switch is accessed to a local area network to realize uploading of signals acquired by the system, realize ground and underground communication and monitor and control the underground environment; the dust remover is fixedly installed in the middle of the top of the base, an air outlet pipe is fixed to the right side of the dust remover and connected with an exhaust fan, underground air is driven to enter the dust remover from an air inlet, a sprayer sprays water to enable coal dust in the air to be condensed and fall into a filter pipe, and water falls into the bottom of the dust remover through the filter pipe and is extracted through a centrifugal pump to be recycled. And the spiral cleaning brush rod guides coal dust residues in the filter pipe into the waste box. The coal mine underground dust monitoring system is simple in structure and use, and the utilization rate of dust removal water and the dust removal working efficiency can be effectively improved.

Description

Technical Field

[0001] The invention relates to an underground coal mine dust monitoring system, which belongs to the technical field of underground coal mine monitoring and dust removal, and is particularly suitable for monitoring and reducing dust concentration in the air during mining and transportation operations that generate a large amount of dust during underground coal mine operations. Background Art

[0002] Coal is one of the main energy sources in my country. A large amount of dust is generated during coal mining, processing and transportation. These dusts not only threaten the health of coal miners, but may also cause safety accidents such as explosions. Therefore, coal mine dust monitoring and dust removal are particularly important. Dust monitoring is the prerequisite for dust control. Only by accurately understanding the concentration and distribution of dust can effective dust removal measures be taken. Dust removal technology is the key to controlling dust pollution. Existing mine dust removal devices have disadvantages such as low dust removal efficiency and difficulty in cleaning collected dust, resulting in low practicality.

[0003] In recent years, as people pay more attention to environmental protection and occupational health, coal mine dust monitoring and dust removal technology has developed rapidly. In addition, the state has also issued a series of relevant policies and regulations to strengthen the supervision of coal mine dust monitoring and dust removal. Major coal mining companies have also actively responded to the national call and strengthened the management of dust monitoring and dust removal. Various high-efficiency dust removal equipment has also been widely used in coal mines to ensure the health and safety of coal miners.

[0004] Coal mine dust monitoring and dust removal work is an important measure to ensure the health and safety of coal miners, and is also a necessary condition for achieving sustainable development of coal mines. Therefore, the application of existing technologies in coal mine dust monitoring and dust removal work needs to be further improved and developed. Summary of the invention

[0005] Technical problem: The purpose of the present invention is to solve the problems existing in the prior art such as low dust removal efficiency, complicated operation, low resource utilization, etc., and to provide a coal mine underground dust monitoring system with simple operation, low cost and good effect.

[0006] Technical solution: The underground dust monitoring system of the coal mine of the present invention includes a dust removal device controller connected to a dust concentration sensor, a liquid level sensor, and a ring network switch using a wiring box. The ring network switch is connected to a local area network, and the dust removal device controller is directly connected to the dust collector. The liquid level sensor is fixedly installed on the left inner wall of the dust collector; the dust removal device controller is provided with an electric ball valve, and the dust removal device controller transmits and interacts data with the inside of the electric ball valve, and the dust removal device controller is connected to the mine power supply line for electricity; the water supply pipeline is connected to the dust collector through a manual ball valve, an automatic backwashing sewage filter, and an electric ball valve; the dust collector is provided with a servo motor, a centrifugal pump, and an exhaust fan, and the dust collector interacts internally with the servo motor, the centrifugal pump, and the exhaust fan; the bottom of the dust collector is fixedly installed in the center of the upper surface of the base, the top left side of the dust collector is fixedly connected to the air intake pipe, and the dust collector is positive A positioning plate is fixed on the reverse inner wall, and the positioning plate is fixedly connected to the filter tube. Spiral cleaning brush rods are connected to the inner walls on the left and right sides of the dust collector, and the spiral cleaning brush rods are located inside the filter tube. The filter tube is semi-annular and the outer surface of the brush head of the spiral cleaning brush rod is close to the inner surface of the filter tube. The left end of the spiral cleaning brush rod extends to the left outer wall of the dust collector and is fixedly connected to the upper sprocket; a servo motor is fixedly installed on the left side of the top of the base, and the servo motor is fixedly sleeved with a driving sprocket, and the driving sprocket is connected to the upper sprocket by a chain; a centrifugal pump is fixedly installed on the upper surface of the base, and the centrifugal pump is installed on the back of the dust collector. A water pipe is fixedly installed on the outer wall of the upper surface of the dust collector, and a water pipe is fixedly connected between the water pipe, the dust collector and the centrifugal pump. A nozzle is installed at the bottom of the water pipe, and the nozzle extends and is fixedly installed inside the dust collector; waste boxes are fixedly installed on both sides of the upper surface of the dust collector, and the waste boxes are arched and connected to the filter tube. An exhaust pipe is installed on the right side of the dust collector, and the exhaust pipe is connected to the exhaust fan; a trailer hook is fixedly installed on the top left side of the base, and four sets of symmetrical universal wheels are fixedly installed on the bottom of the base.

[0007] The dust removal device controller has two RS485 bus communication interfaces, one of which is connected to the ring network switch to realize data transmission and interaction between ground control and underground equipment, and the other is connected to the dust concentration sensor, liquid level sensor, and dust collector to collect dust concentration signals and liquid level signals, etc., to realize data signal transmission and local logic control.

[0008] The bottom edge of the waste box connected to the filter pipe is tilted downward, so that the coal dust slides into the bottom of the waste box due to gravity, which is convenient for collecting and processing the coal dust.

[0009] Beneficial effects: The Internet of Things technology is combined with the dust removal device to realize local logic control, automatic monitoring of underground air dust concentration and automatic dust removal, and remote control of the underground dust monitoring system in coal mines, which effectively improves the efficiency of coal mine dust monitoring and dust removal and resource utilization. Through the design of the dust collector, the recycling of dust removal water is achieved to avoid the waste of water resources and effectively improve the utilization efficiency of water resources; through the design of the filter tube and the spiral cleaning brush rod, the filter tube can be cleaned while the waste residue in the filter tube is introduced into the waste box to avoid the waste residue blocking the filter tube. The design of the waste box facilitates the cleaning of the collected coal dust and improves the practicality of the coal mine dust removal device. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural schematic diagram of the present invention.

[0011] Figure 2 It is a cross-sectional schematic diagram of a dust collector.

[0012] Figure 3 It is a structural diagram of the spiral brush rod of the dust collector.

[0013] In the figure: 1. dust removal device controller, 2. manual ball valve, 3. automatic backwashing sewage filter, 4. electric ball valve, 5. water supply pipeline, 6. power supply line, 7. local area network, 8. ring network switch, 9. wiring box, 10. dust concentration sensor, 11. water pipe, 12. nozzle, 13. filter tube, 14. spiral cleaning brush rod, 15. waste box, 16. exhaust pipe, 17. dust collector, 18. exhaust fan, 19. base, 20. universal wheel, 21. trailer hook, 22. servo motor, 23. liquid level sensor, 24. chain, 25. intake pipe, 26. centrifugal pump. DETAILED DESCRIPTION

[0014] An embodiment of the present invention will be further described below with reference to the accompanying drawings.

[0015] Figure 1As shown, the present invention provides a coal mine underground dust monitoring system, comprising a dust removal device controller (1) connected to a dust concentration sensor (10), a liquid level sensor (23), and a ring network switch (8) by using a wiring box (9), the ring network switch (8) is connected to a local area network (7), the dust removal device controller (1) is directly connected to a dust collector (17), and the liquid level sensor (23) is fixedly installed on the left inner wall of the dust collector (17); the dust removal device controller (1) is provided with an electric ball valve (4), the dust removal device controller (1) and the electric ball valve (4) are internally transmitted and interacted with each other, and the dust removal device controller (1) ) is connected to the mining power supply line (6) for electricity; the water supply pipeline (5) is connected to the dust collector (17) through a manual ball valve (2), an automatic backwashing filter (3), and an electric ball valve (4); the dust collector (17) is provided with a servo motor (22), a centrifugal pump (26) and an exhaust fan (18), and the dust collector (17) exchanges internal data with the servo motor (22), the centrifugal pump (26) and the exhaust fan (18); the bottom of the dust collector (17) is fixedly installed in the middle of the upper surface of the base (19), the top of the left side of the dust collector (17) is fixedly connected to the air intake pipe (25), and the dust collector (17) is A positioning plate is fixed on the reverse inner wall, and the positioning plate is fixedly connected to the filter tube (13). The inner walls on the left and right sides of the dust collector (17) are connected to spiral cleaning brush rods (14), and the spiral cleaning brush rods (14) are located inside the filter tube (13). The filter tube (13) is semi-annular and the outer surface of the brush head of the spiral cleaning brush rod (14) is in close contact with the inner surface of the filter tube (13). The left end of the spiral cleaning brush rod (14) extends to the left outer wall of the dust collector (17) and is fixedly connected to the upper sprocket. A servo motor (22) is fixedly installed on the left side of the top of the base (19), and the servo motor (22) is fixedly sleeved with a driving sprocket, and the driving sprocket and the upper sprocket are connected. The dust collector (17) and the dust collector (17) are connected by a chain (24); a centrifugal pump (26) is fixedly installed on the upper surface of the base (19), and the centrifugal pump (26) is installed on the back of the dust collector (17); a water pipe (11) is fixedly installed on the outer wall of the upper surface of the dust collector (17); a water pipe is fixedly connected between the water pipe (11), the dust collector (17) and the centrifugal pump (26); a nozzle (12) is installed at the bottom of the water pipe (11), and the nozzle (12) is extended and fixedly installed inside the dust collector (17); waste boxes (15) are fixedly installed on both sides of the upper surface of the dust collector (17); the waste box (15) is arched and connected to the filter tube (13). An air outlet pipe (16) is installed on the right side of the dust collector (17), and the air outlet pipe (16) is connected to the exhaust fan (18); a trailer hook (21) is fixedly installed on the top of the left side of the base (19), and four sets of symmetrical universal wheels (20) are fixedly installed at the bottom of the base (19).

[0016] The working process of the underground coal mine dust monitoring system of the present invention is as follows: first, a dust concentration sensor (10) is arranged near a dust collector (17), the dust concentration sensor (10) monitors the dust concentration in the underground air, and transmits an over-limit or normal signal to a dust removal device control box (1) through a wiring box (9), thereby realizing the opening and closing of an electric ball valve (4) and the start and stop of the dust collector (17). When the dust collector (17) is working, the exhaust fan (18) and the servo motor (22) are started, and the air carrying dust is introduced into the dust collector (17) through the air inlet pipe (25). Water is sprayed through the nozzle (12) so that the dust in the air condenses and falls on the filter tube (13). The water falls into the bottom of the dust collector (17) through the filter tube (13). The servo motor (22) rotates and drives the spiral cleaning brush rod (14) to rotate through the chain (24), and the coal dust residue in the filter tube (13) is cleaned and guided into the waste box (15-1). When the spiral cleaning brush rod (14) moves to the right side of the filter tube (13), the servo motor (22) is started to reverse, driving the spiral cleaning brush rod (14) to reverse, and the dust residue is introduced into the waste box (15-2), ensuring that the spiral cleaning brush rod (14) can continuously clean the filter tube (13) and guide the coal dust residue on the filter tube (13), thereby improving the dust removal efficiency. The right bottom of the dust collector (17) is fixedly sleeved with an air outlet pipe (16), and the treated air is discharged from the air outlet pipe (16). When the water at the bottom of the dust collector (17) reaches the position of the liquid level sensor (23), the dust removal device controller (1) controls the centrifugal pump (26) to start, and the water at the bottom of the dust collector (17) is introduced into the nozzle (12) through the water guide pipe (11) for recycling, thereby completing the dust monitoring and dust removal operation in the coal mine.

Claims

1. A coal mine underground dust monitoring system, characterized in that: The invention comprises a dust removal device controller (1) connected to a dust concentration sensor (10), a liquid level sensor (23) and a ring network switch (8) by using a wiring box (9); the ring network switch (8) is connected to a local area network (7); the dust removal device controller (1) is directly connected to a dust collector (17); the liquid level sensor (23) is fixedly installed on the left inner wall of the dust collector (17); the dust removal device controller (1) is provided with an electric ball valve (4); the dust removal device controller (1) and the electric ball valve (4) are internally transmitted and interacted; the dust removal device controller (1) is connected to a mine power supply line (6) for power supply ; The water supply pipeline (5) is connected to the dust collector (17) through a manual ball valve (2), an automatic backwashing filter (3), and an electric ball valve (4); the dust collector (17) is provided with a servo motor (22), a centrifugal pump (26), and an exhaust fan (18); the dust collector (17) exchanges internal data with the servo motor (22), the centrifugal pump (26), and the exhaust fan (18); the bottom of the dust collector (17) is fixedly mounted at a central position on the upper surface of the base (19); the top left side of the dust collector (17) is fixedly connected to an air intake pipe (25); positioning plates are fixed to the front and back inner walls of the dust collector (17); The positioning plate is fixedly connected to the filter tube (13), and the inner walls on the left and right sides of the dust collector (17) are connected with spiral cleaning brush rods (14), the spiral cleaning brush rods (14) are located inside the filter tube (13), the filter tube (13) is semi-annular and the outer surface of the brush head of the spiral cleaning brush rod (14) is close to the inner surface of the filter tube (13), and the left end of the spiral cleaning brush rod (14) extends to the left outer wall of the dust collector (17) and is fixedly connected to the upper sprocket; the servo motor (22) is fixedly installed on the left side of the top of the base (19), and the servo motor (22) is fixedly sleeved with the driving sprocket, and the driving sprocket and the upper sprocket are connected by a chain ( 24) connection; a centrifugal pump (26) is fixedly installed on the upper surface of the base (19), and the centrifugal pump (26) is installed on the back of the dust collector (17); a water pipe (11) is fixedly installed on the outer wall of the upper surface of the dust collector (17); a water pipe is fixedly connected between the water pipe (11), the dust collector (17) and the centrifugal pump (26); a nozzle (12) is installed at the bottom of the water pipe (11), and the nozzle (12) extends and is fixedly installed inside the dust collector (17); waste boxes (15) are fixedly installed on both sides of the upper surface of the dust collector (17), and the waste box (15) is arched and connected to the filter tube (13). An air outlet pipe (16) is installed on the right side of the dust collector (17), and the air outlet pipe (16) is connected to the exhaust fan (18); a trailer hook (21) is fixedly installed on the top of the left side of the base (19), and four sets of symmetrical universal wheels (20) are fixedly installed at the bottom of the base (19).

2. The underground coal mine dust monitoring system according to claim 1, characterized in that: The dust removal device controller (1) has two RS485 bus communication interfaces, one of which is connected to the ring network switch (8) to realize data transmission and interaction between ground control and underground equipment, and the other is connected to the dust concentration sensor (10), the liquid level sensor (23), and the dust collector (17) to collect dust concentration signals and liquid level signals, etc., to realize data signal transmission and local logic control.

3. The underground coal mine dust monitoring system according to claim 1-2, characterized in that: The bottom edge of the waste box (15) connected to the filter tube (13) is tilted downward, so that the coal dust slides into the bottom of the waste box (15) due to gravity, making it easy to collect and process the coal dust.

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