An intelligent ventilation system for local ventilation in the driving face of underground coal mines

Abstract

The present invention provides an intelligent ventilation system for localized ventilation of underground coal mine excavation working faces, relating to the field of coal mine operating equipment. The intelligent ventilation system for localized ventilation of underground coal mine excavation working faces comprises two columns, each hingedly connected to a curved rod at its top. A thimble is provided between the two columns and inserted into the rock wall at the top of the mine. The intelligent ventilation system for localized ventilation of underground coal mine excavation working faces comprises the columns, curved rod, and thimble, forming a framework that supports the rock wall. The curved strips, air intake pipe, exhaust pipe, and hose cooperate to exhaust carbon dioxide from the mine and deliver air, ensuring sufficient oxygen within the mine and achieving ventilation. The coordination of the air chamber, septum, and fragile barrier allows the fragile barrier to shatter in the event of a mine collapse, allowing oxygen tanks to release oxygen, thereby preventing trapped personnel from suffocating due to the defect. This further improves the chances of survival for workers in the event of a mine disaster.

Description

Technical Field

[0001] The present invention relates to the technical field of coal mine operating equipment, and in particular to an intelligent ventilation system for local ventilation of an underground coal mine excavation working face. Background Art

[0002] Coal mines are areas where humans extract coal resources in coal-rich areas. They are generally divided into underground and open-pit mines. When the coal seam is far from the surface, the coal is usually mined by tunneling underground, which is an underground coal mine. When the coal seam is very close to the surface, the coal is usually mined directly by removing the surface soil layer, which is an open-pit coal mine. The vast majority of coal mines in my country are underground coal mines.

[0003] Existing ventilation systems used in underground coal mines are difficult to install and disassemble. In the event of a mine collapse, ventilation pipes can easily break, depriving trapped individuals of oxygen. Furthermore, since the hydraulic oil must be drained before installing the liquid oxygen pipeline, the supports used in the mines need to be frequently installed and disassembled, making them prone to failure. Consequently, coal mines often use inferior support systems, increasing the risk of mine collapse. Therefore, a new type of ventilation system is needed. Summary of the Invention

[0004] (1) Technical problems solved

[0005] In view of the deficiencies in the prior art, the present invention provides an intelligent ventilation system for local ventilation of an underground coal mine excavation working face, which solves the problems raised in the above-mentioned background technology.

[0006] (2) Technical solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: an intelligent ventilation system for local ventilation of underground coal mine excavation working faces, comprising two columns, wherein the top ends of the columns are hinged with arc-shaped rods, and a thimble is provided between the two columns. The thimble is inserted into the rock wall at the top of the mine, and the upper end of the arc-shaped rod is connected to the thimble. A frame is formed by the combination of the columns, the arc-shaped rods and the thimbles. Multiple frames are arranged at equal distances along the length of the mine, and the arc-shaped rods are provided with arc-shaped strip tubes, and the arc-shaped strip tubes are provided with air intake pipes and exhaust pipes. The air intake pipe is located above the exhaust pipe, and a hose is connected to the top end of the arc-shaped strip tube.

[0008] The air intake pipes of adjacent frames are connected by connecting pipes. The air intake pipes send outside air into the mine and discharge it from the hose. The exhaust pipe body is provided with multiple small holes, and the carbon dioxide in the mine is discharged through the exhaust pipe.

[0009] Preferably, the arc-shaped strip tube is a solid tube, in which an oxygen tank, an air chamber and an air pump are embedded. The air inlet end of the air pump extends outside the arc-shaped strip tube, the air pump exhaust end is connected to the exhaust pipe, the air chamber is connected to the hose, and the air chamber is provided with two branches on the side away from the hose, one of which is connected to the air inlet pipe, and the other branch is connected to the oxygen tank. A diaphragm and a fragile partition are provided in the air chamber, and the fragile partition is connected to the diaphragm to block the oxygen tank.

[0010] Preferably, the arc-shaped strip tube is further fixedly embedded with a control module and a carbon dioxide detector, and the control module is electrically connected to the carbon dioxide detector and the air pump respectively.

[0011] Preferably, a groove is provided at the center of the column, a hollow truncated cone block is provided in the groove, an air bag is provided on the outward side of the truncated cone block, a gas compression tank is fixedly installed in the truncated cone block, and a trigger block is provided in the column relative to the truncated cone block, the trigger block is provided with a pin, and the pin can be inserted into the truncated cone block to puncture the gas compression tank.

[0012] Preferably, micro electric push rods are provided on the upper and lower sides of the inner wall of the trigger block, and a rubber strip is provided on the movable end of the micro electric push rod. The rubber strip is connected to the pin at one end away from the micro electric push rod, and the rubber strips on the upper and lower sides are in contact with each other. A pressure measuring module is fixedly installed in the trigger block, and the pressure measuring module is electrically connected to the micro electric push rod. When the micro electric push rod is extended, the rubber strip pushes the pin into the frustum block.

[0013] Preferably, an access port is provided on the side of the ejector pin, an exhaust port is provided at the bottom of the ejector pin, the access port is communicated with the exhaust port, the access port is used to be connected to a hose, a bolt is provided on the side of the ejector pin, the bolt is used to fix the top of the arc rod and the ejector pin together, a hook is provided at the bottom end of the ejector pin, and when the arc rod and the ejector pin are fixed together, a wiring slot is formed between the hook and the arc rod.

[0014] Preferably, the arc-shaped rod body is penetrated by a plurality of positioning rods, both ends of the positioning rods are bent upward to contact the rock wall at the top of the mine, the positioning rods are used to fix the arc-shaped strip tube, and the outer side of the arc-shaped strip tube is coated with a foam filling layer.

[0015] Preferably, a base plate is provided between the two columns, the base plate is aligned with the bottom end of the column, a screw is threadedly connected to the end of the base plate, a through hole is provided at the lower end of the column, and the screw passes through the through hole and is inserted into the rock wall of the mine.

[0016] (3) Beneficial effects

[0017] The present invention provides an intelligent ventilation system for local ventilation of an underground coal mine excavation working face.

[0018] It has the following beneficial effects:

[0019] This intelligent ventilation system, used for localized ventilation of underground coal mine working faces, features a framework composed of columns, curved rods, and thimbles to support the rock face. Curved strips, intake pipes, exhaust pipes, and flexible hoses work together to expel carbon dioxide from the mine and deliver air, ensuring sufficient oxygen and ventilation within the mine. The coordination of the air chamber, septa, and fragile interlayer allows the fragile interlayer to shatter in the event of a mine collapse, allowing oxygen tanks to release oxygen, preventing trapped workers from suffocating due to the defect. This further improves the chances of survival in the event of a mine disaster. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the present invention;

[0021] Figure 2 Another state diagram of the structure of the present invention;

[0022] Figure 3 This is a schematic diagram of the column structure of the present invention;

[0023] Figure 4 For the present invention Figure 3 A magnified view of the structure at center A;

[0024] Figure 5 This is a schematic diagram of the structure of the curved strip tube of the present invention;

[0025] Figure 6 This is a schematic diagram of the internal structure of the arc-shaped strip tube of the present invention;

[0026] Figure 7 For the present invention Figure 6 A magnified view of the structure at point B in the middle;

[0027] Figure 8 This is a schematic diagram of the ejector structure of the present invention;

[0028] Figure 9 This is a schematic diagram of the internal structure of the truncated cone block of the present invention;

[0029] Figure 10 Schematic diagram of the internal structure of the trigger block of the present invention.

[0030] In the figure: 1 column, 2 curved rod, 3 ejector pin, 31 access port, 32 exhaust port, 33 hook, 331 wiring slot, 4 positioning rod, 5 bolt, 6 bottom plate, 61 screw, 7 round table block, 71 air bag, 72 gas compression tank, 8 trigger block, 81 pin, 82 micro electric push rod, 83 rubber strip, 84 pressure measuring module, 9 curved strip tube, 91 foam filling layer, 92 intake pipe, 93 exhaust pipe, 94 hose, 10 connecting pipe, 11 groove, 12 perforation, 13 oxygen tank, 14 control module, 15 gas chamber, 151 spacer, 152 fragile partition, 153 branch, 16 carbon dioxide detector, 17 air pump. DETAILED DESCRIPTION

[0031] The embodiment of the present invention provides an intelligent ventilation system for local ventilation of an underground coal mine working face, such as Figure 1-10 As shown, the system comprises two columns 1, each hinged with a curved rod 2 at its top. A thimble 3 is positioned between the two columns 1. The thimble 3 is inserted into the rock wall at the top of the mine shaft, and the upper end of the curved rod 2 is fixed to the thimble 3. The columns 1, curved rod 2, and thimble 3 form a framework, and multiple frameworks are arranged at equal intervals along the length of the mine shaft.

[0032] An arc-shaped strip tube 9 is placed on the arc-shaped rod 2, and an air intake pipe 92 and an exhaust pipe 93 are fixedly installed on the arc-shaped strip tube 9. The air intake pipe 92 and the exhaust pipe 93 both pass through the arc-shaped strip tube 9. The air intake pipe 92 is located above the exhaust pipe 93, and a hose 94 is fixedly installed on the top of the arc-shaped strip tube 9.

[0033] A connecting pipe 10 is fixedly installed between the air intake pipes 92 of adjacent frames, and is combined with the attached Figure 1 The exhaust pipes 93 of adjacent frames are also connected together via connecting pipes 10. Air from outside is transported to the depths of the mine via intake pipe 92, where it is discharged through hose 94. This increases the oxygen content deep within the mine. An air delivery device is placed outside the mine and docked with intake pipe 92, delivering air from outside to intake pipe 92. Because the air delivery device is conventional, it is not described in detail and is not shown in the accompanying drawings.

[0034] The exhaust pipe 93 is provided with a plurality of small holes. Since carbon dioxide is heavier than air, the carbon dioxide produced by human breathing accumulates below the mine, so the exhaust pipe 93 is positioned low. The carbon dioxide in the mine is discharged through the exhaust pipe 93.

[0035] The curved strip tube 9 is a solid tube, embedded with an oxygen tank 13, an air chamber 15, and an air pump 17. The air inlet of the air pump 17 extends outside the curved strip tube 9, and the exhaust end of the air pump 17 is welded to the exhaust pipe 93. The air pump 17 delivers carbon dioxide into the exhaust pipe 93. Because the frames are arranged from the mine entrance to the depths, the air pumps 17 in each frame work together to discharge carbon dioxide from deep within the mine.

[0036] The air chamber 15 is welded to the hose 94. Two branches 153 are fixedly installed on the side of the air chamber 15 away from the hose 94. One branch 153 is welded to the air inlet pipe 92, and the other branch 153 is welded to the oxygen tank 13. A diaphragm 151 and a fragile barrier 152 are fixedly bonded inside the air chamber 15. One end of the fragile barrier 152 is bonded to the diaphragm 151. Figure 7 As shown, the branch 153 connected to the oxygen tank 13 is blocked by the cooperation of the septum 151 and the fragile barrier 152 .

[0037] Under normal circumstances, only the air delivery device continuously injects air into the mine. However, in the event of a landslide, the mine passageway becomes blocked by rubble, trapping personnel. At this point, the vibration of the curved tube 9 causes the fragile barrier 152 within the air chamber 15 to shatter, allowing the oxygen in the oxygen tank 13 to communicate with the hose 94, resulting in continuous oxygen release. This ensures sufficient oxygen deep within the mine, preventing trapped personnel from suffocating due to lack of oxygen during a mine collapse.

[0038] The curved tube 9 is also fixedly embedded with a control module 14 and a carbon dioxide detector 16. The control module 14 is electrically connected to the carbon dioxide detector 16 and the air pump 17, respectively. The carbon dioxide detector 16 is used to detect the carbon dioxide concentration in the mine, allowing workers to promptly monitor the air content in the mine. If the carbon dioxide concentration is detected to be too high, work can be stopped immediately to avoid dangerous operations.

[0039] A recess 11 is defined in the center of the column 1. A hollow truncated cone 7 is fixedly mounted within this recess. An air bag 71 is bonded to the outward-facing side of the cone 7. A compressed gas tank 72 is fixedly mounted within the cone 7. A trigger block 8 is embedded within the column 1 opposite the cone 7. This trigger block 8 is equipped with a pin 81 that can penetrate the cone 7 to puncture the compressed gas tank 72.

[0040] Combined with attachment Figure 10 A miniature electric push rod 82 is welded to the upper and lower sides of the inner wall of the trigger block 8. A rubber strip 83 is fixedly bonded to the movable end of the miniature electric push rod 82. The end of the rubber strip 83, which is away from the miniature electric push rod 82, is fixedly bonded to the end of the pin 81. The upper and lower rubber strips 83 are in contact with each other. A pressure measuring module 84 and a battery are fixedly installed in the trigger block 8.

[0041] Pressure measuring module 84, a battery, and micro electric push rod 82 are electrically connected. When debris strikes the frame during a landslide, pressure measuring module 84 detects the pressure change, causing micro electric push rod 82 to extend and push rubber strip 83. Rubber strip 83 extends outward, pushing pin 81 into frustum block 7, causing pin 81 to puncture gas cylinder 72.

[0042] The gas compressed tank 72 is punctured, releasing the gas inside and causing the air bag 71 to swell, supporting both sides of the column 1. This also slows down the deformation of the entire frame, thereby providing workers with time to escape in the event of a mine collapse.

[0043] Ejector pin 3 has an access port 31 on its side and an exhaust port 32 at its bottom. Access port 31 communicates with exhaust port 32 and is used to connect to hose 94. Ejector pin 3 has a bolt 5 on its side, which secures the top of the curved rod 2 to ejector pin 3. A hook 33 is welded to the bottom of ejector pin 3. When the curved rod 2 and ejector pin 3 are secured together, a wiring slot 331 is formed between hook 33 and the curved rod 2.

[0044] The wiring card slot 331 is used to fix cables, wires and other lines to prevent workers from tripping over too many lines when walking.

[0045] As attached Figure 2 As shown, the curved rod 2 is penetrated by multiple positioning rods 4. The positioning rods 4 are bent with a hammer, with both ends of the positioning rods 4 bent upward to contact the mine roof wall, thereby locking the curved bar tube 9 and securing it. The outer surface of the curved bar tube 9 is coated with a foam filling layer 91. This foam filling layer 91 ensures better contact between the curved bar tube 9 and the mine roof wall and also protects the curved bar tube 9.

[0046] A base plate 6 is placed between the two columns 1. The base plate 6 is aligned with the bottom end of the column 1. A screw 61 is threadedly connected to the end of the base plate 6. A through hole 12 is opened at the lower end of the column 1. The screw 61 passes through the through hole 12 and is inserted into the rock wall of the mine.

[0047] In summary, the intelligent ventilation system for local ventilation of the underground excavation working face of a coal mine is provided with a column 1, an arc-shaped rod 2 and an ejector pin 3, which form a frame supporting the rock wall. The arc-shaped strip pipe 9, the air inlet pipe 92, the exhaust pipe 93 and the hose 94 cooperate to discharge the carbon dioxide in the mine and transport the air to ensure that there is sufficient oxygen in the mine and achieve the ventilation effect. The air chamber 15, the partition 151 and the fragile partition 152 cooperate to break the fragile partition 152 when the mine collapses, so that the oxygen tank 13 can release oxygen to the outside, thereby preventing the trapped people from suffocating due to defects. Further improve the survival rate of workers in the event of a mine accident.

[0048] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An intelligent ventilation system for local ventilation of an underground coal mine working face, arranged in the mine, characterized by: The invention comprises two columns (1), wherein the top of the columns (1) is hinged with an arc rod (2), a thimble (3) is provided between the two columns (1), the thimble (3) is inserted into the rock wall at the top of the mine, the upper end of the arc rod (2) is connected to the thimble (3), and a frame is formed by the columns (1), the arc rod (2) and the thimble (3), and a plurality of frames are arranged at equal distances along the length of the mine, the arc rod (2) is provided with an arc strip tube (9), the arc strip tube (9) is provided with an air intake pipe (92) and an exhaust pipe (93), the air intake pipe (92) is located above the exhaust pipe (93), and the top end of the arc strip tube (9) is connected with a hose (94); A connecting pipe (10) is connected between the air intake pipes (92) of adjacent frames. The air intake pipe (92) sends outside air into the mine and discharges it from the hose (94). The exhaust pipe (93) is provided with a plurality of small holes, and the carbon dioxide in the mine is discharged through the exhaust pipe (93).

2. The intelligent ventilation system for local ventilation of an underground coal mine excavation working face according to claim 1, characterized in that: The arc-shaped strip tube (9) is a solid tube. An oxygen tank (13), an air chamber (15) and an air pump (17) are embedded in the arc-shaped strip tube (9). The air inlet end of the air pump (17) extends outside the arc-shaped strip tube (9). The air outlet end of the air pump (17) is connected to the exhaust pipe (93). The air chamber (15) is connected to the hose (94). Two branches (153) are provided on the side of the air chamber (15) away from the hose (94). One branch (153) is connected to the air inlet pipe (92), and the other branch (153) is connected to the oxygen tank (13). A spacer (151) and a fragile barrier (152) are provided in the air chamber (15). The fragile barrier (152) and the spacer (151) are connected together to block the oxygen tank (13).

3. The intelligent ventilation system for local ventilation of an underground coal mine excavation working face according to claim 2, characterized in that: The arc-shaped strip tube (9) is also fixedly embedded with a control module (14) and a carbon dioxide detector (16), and the control module (14) is electrically connected to the carbon dioxide detector (16) and the air pump (17) respectively.

4. The intelligent ventilation system for local ventilation of an underground coal mine excavation working face according to claim 1, characterized in that: A groove (11) is provided at the center of the column (1), a hollow truncated cone block (7) is provided in the groove (11), an air bag (71) is provided on the outward side of the truncated cone block (7), a gas compression tank (72) is fixedly installed in the truncated cone block (7), a trigger block (8) is provided in the column (1) relative to the truncated cone block (7), the trigger block (8) is provided with a pin (81), and the pin (81) can be inserted into the truncated cone block (7) to puncture the gas compression tank (72).

5. The intelligent ventilation system for local ventilation of an underground coal mine excavation working face according to claim 4, characterized in that: The trigger block (8) is provided with a micro electric push rod (82) on both upper and lower sides of the inner wall. The movable end of the micro electric push rod (82) is provided with a rubber strip (83). The rubber strip (83) is connected to the pin (81) at one end away from the micro electric push rod (82). The rubber strips (83) on the upper and lower sides are in contact with each other. A pressure measuring module (84) is fixedly installed in the trigger block (8). The pressure measuring module (84) is electrically connected to the micro electric push rod (82). When the micro electric push rod (82) is extended, the rubber strip (83) pushes the pin (81) into the truncated cone block (7).

6. The intelligent ventilation system for local ventilation of an underground coal mine excavation working face according to claim 1, characterized in that: The ejector pin (3) is provided with an access port (31) on its side, and an exhaust port (32) on its bottom. The access port (31) is in communication with the exhaust port (32). The access port (31) is used to connect to the hose (94). A bolt (5) is provided on the side of the ejector pin (3). The bolt (5) is used to fix the top of the arc rod (2) and the ejector pin (3) together. A hook (33) is provided at the bottom end of the ejector pin (3). When the arc rod (2) and the ejector pin (3) are fixed together, a wiring slot (331) is formed between the hook (33) and the arc rod (2).

7. The intelligent ventilation system for local ventilation of an underground coal mine excavation working face according to claim 1, characterized in that: The arc-shaped rod (2) is penetrated by a plurality of positioning rods (4), both ends of the positioning rods (4) are bent upward to contact the rock wall at the top of the mine, and the positioning rods (4) are used to fix the arc-shaped strip tube (9), and the outer side of the arc-shaped strip tube (9) is coated with a foam filling layer (91).

8. The intelligent ventilation system for local ventilation of an underground coal mine excavation working face according to claim 1, characterized in that: A base plate (6) is provided between the two columns (1), the base plate (6) is aligned with the bottom end of the column (1), a screw rod (61) is threadedly connected to the end of the base plate (6), a through hole (12) is provided at the lower end of the column (1), and the screw rod (61) passes through the through hole (12) and is inserted into the rock wall of the mine.

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