Cooperative ventilation dust-falling and explosion-proof integrated device used after mine explosion

Abstract

The invention belongs to the technical field of mine ventilation, and discloses a collaborative ventilation dust-falling and explosion-proof integrated device used after mine explosion, which comprises an air exhaust assembly, a spraying assembly and an emergency assembly, the air exhaust assembly comprises an air inlet and an air outlet and is used for underground ventilation of a mine machine, the emergency assembly is mounted at the top of the air outlet, and the spraying assembly is mounted at the top of the air outlet. Comprising an atomizing nozzle, the atomizing nozzle atomizes water, the atomized water is discharged from an air outlet along with air, water mist is combined with coal dust in a mine after being in contact with the coal dust, and the coal dust concentration in the mine after blasting is reduced. Explosion is prevented by reducing the oxygen content, the coal dust concentration is instantly and sharply increased after explosion under a mine, the motor is controlled to work after a signal is detected by the coal dust concentration sensor, limestone and a hydrochloric acid solution start to make contact and react, and a large amount of carbon dioxide gas generated by the reaction is discharged to an air outlet through a pipeline. Therefore, the content of oxygen entering the mine is greatly reduced, and coal dust explosion is prevented.

Description

Technical Field

[0001] The present invention belongs to the technical field of mine ventilation, and in particular relates to an integrated device for coordinated ventilation, dust reduction and explosion protection after mine blasting. Background Art

[0002] The working environment in underground mines, or coal mines, is unique. During mine construction and production, numerous processes, including excavation, blasting, and loading, generate large amounts of dust. This dust poses a serious threat to workers' health. Long-term inhalation of fine dust particles can lead to diseases such as pneumoconiosis. Furthermore, under certain conditions, dust can cause explosions, seriously threatening mine safety and causing significant casualties and property damage.

[0003] At the same time, underground ventilation is crucial to ensure that workers can work normally in the mine. Good ventilation can expel toxic and harmful gases underground, such as carbon monoxide produced by blasting, provide workers with sufficient fresh air, and improve the air quality of the working environment.

[0004] However, simple ventilation systems, when in operation, can cause dust to flow with the airflow. Without proper dust suppression, the dust can spread throughout the underground space, polluting the environment and potentially affecting the proper functioning of ventilation equipment. During underground blasting, dust concentrations can surge instantly, and excessive dust concentrations can pose an explosion risk.

[0005] In the existing technology, underground dust has the characteristics of multiple types, wide particle size and high concentration. In terms of types, it includes coal dust (flammable), rock dust (high hardness), and respirable dust (particle size <5μm, easy to deposit in the lungs). For coal dust, coal dust contains flammable and explosive substances. When the mine is blasted, the coal dust concentration surges instantly. When the coal dust concentration is too high, the gas concentration will also increase accordingly, which leads to a harsh environment under the mine and the risk of explosion. In existing equipment, water mist is generally sprayed to reduce the coal dust concentration and prevent the occurrence of danger. At the moment after the blast, the coal dust concentration surges, and the sprayed water mist is quickly wrapped by the coal dust. Subsequent droplets can hardly absorb new coal dust, resulting in a sharp drop in dust reduction efficiency. In addition, the water mist absorbs gas very slowly and cannot effectively suppress the increase in gas concentration. Therefore, there is a high risk of gas explosion at the moment after the blast. Summary of the Invention

[0006] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide an integrated device for coordinated ventilation, dust reduction and explosion protection after mine blasting, which solves the problem in the existing technology that the coal dust concentration surges after blasting and is prone to explosion.

[0007] The object of the present invention can be achieved by the following technical solutions: an integrated device for coordinated ventilation, dust reduction and explosion protection after mine blasting, comprising an exhaust component, a spray component and an emergency component;

[0008] The exhaust assembly, including the air inlet and outlet, is used to ventilate the mine underground. The emergency assembly is installed on the top of the outlet.

[0009] The spray assembly includes an atomizing nozzle, which atomizes water. The atomized water is discharged from the air outlet along with the air. The water mist contacts and combines with the coal dust in the mine, thereby reducing the coal dust concentration in the mine after blasting.

[0010] The emergency component includes the coal dust concentration sensor chamber No. 1 and chamber No. 2. Hydrochloric acid solution is stored in chamber No. 1, and a large amount of limestone is stored in chamber No. 2. Chamber No. 1 and chamber No. 2 are separated by a corrosion-resistant diaphragm. After the mine blasting, the diaphragm ruptures, and the hydrochloric acid and limestone react to produce a large amount of carbon dioxide gas. The carbon dioxide gas is discharged into the mine along the exhaust component, thereby reducing the oxygen content in the mine, preventing the coal dust from reaching explosion conditions, and preventing coal dust explosions.

[0011] In some disclosures, a base plate is installed at the bottom of the exhaust assembly, a first motor is installed on the top of the base plate, a protective shell is installed on the top of the base plate, a connecting piece is installed on the top of the base plate, a transmission rod is installed at one end of the connecting piece, and one end of the transmission rod extends into the interior of the protective shell, the other end of the transmission rod extends into the interior of the exhaust assembly, the output end of the first motor extends into the interior of the protective shell, and the output end of the first motor is connected to the transmission rod through a belt drive.

[0012] In some disclosures, an exhaust assembly is installed on the top of the base plate, and the exhaust assembly includes a shell installed on the top of the base plate, an air inlet is opened on the outer wall of one side of the shell, an impeller is installed inside the air inlet, the impeller is connected to the transmission rod, and an air outlet is installed at one end of the shell.

[0013] In some disclosures, the spray assembly includes a fixed shell installed on the outer wall of the air outlet, a rotating rod is installed through the outer wall of the fixed shell, and a transmission chain is installed around the outer wall of the rotating rod, the rotating rod and the transmission rod are connected by the transmission chain, a water inlet pipe is installed on the top of the outer wall of the fixed shell, an electric control valve is installed on the outer wall of the water inlet pipe, an atomizing nozzle is installed on the outer wall of the fixed shell, one end of the atomizing nozzle extends to the inside of the air outlet, and an impact plate is installed on the outer wall of the rotating rod.

[0014] In some disclosures, a partition plate is installed on the inner wall of the fixed shell, a first reciprocating screw is installed on the top of the partition plate, and one end of the first reciprocating screw is fixedly connected to one end of the rotating rod, a slider is installed on the outer wall of the first reciprocating screw, and the first reciprocating screw and the slider are connected by a ball screw, a control switch is installed on the top of the partition plate, and the control switch is electrically connected to the electric control valve through a wire.

[0015] In some disclosures, a pressurizing assembly is installed on the top of the partition plate, and the pressurizing assembly includes two pressurizers installed above the partition plate, a resettable airbag is installed on the inner wall of the pressurizer, an air inlet pipe is installed on the outer wall of the airbag, an exhaust pipe is installed at one end of the airbag, and a one-way valve is installed on the outer walls of the air inlet pipe and the exhaust pipe, a movable plate is installed through the outer wall of the pressurizer, a buffer plate is installed at one end of the movable plate, a reset spring is installed on the outer wall of the buffer plate, one end of the reset spring is fixedly connected to the outer wall of the pressurizer, and an extrusion plate is installed at the other end of the movable plate.

[0016] In some disclosures, the emergency component includes a storage box installed on the top of the air outlet, a coal dust concentration sensor is installed on the outer wall of the storage box, a trigger chamber is installed on the inner top wall of the storage box, a motor is installed on the inner wall of the trigger chamber, a take-up shaft is installed on the output end of the motor, a cable is installed around the outer wall of the take-up shaft, an adjustment plate is movably installed on the inner wall of the air outlet, and one end of the cable is fixedly connected to the outer wall of the adjustment plate.

[0017] In some disclosures, a first bevel gear is installed on the outer wall of the take-up shaft, a second reciprocating screw is installed through the bottom of the trigger chamber, a second bevel gear is installed on the top of the second reciprocating screw, and the first bevel gear is meshed with the second bevel gear, a lifting block is installed on the outer wall of the second reciprocating screw, a sliding rod is installed on the bottom of the trigger chamber, a moving block is slidably installed on the outer wall of the sliding rod, the moving block is fixedly connected to the lifting block, and a cutting blade is installed on the outer wall of the moving block.

[0018] In some disclosures, a diaphragm is installed on the inner wall of the storage box, the right side of the diaphragm is cavity No. 1, and the right side is cavity No. 2. The diaphragm is located on one side of the cutting edge, a fixed plate is installed on the inner wall of the storage box, a filter is installed on the top of the fixed plate, a connecting pipe is installed on the outer wall of the storage box, and one end of the connecting pipe extends to the inside of the air inlet and outlet, and a one-way valve is installed on the outer wall of the connecting pipe.

[0019] The nouns, conjunctions or adjectives involved in the above technical solution are explained as follows:

[0020] A fixed connection is a connection in which parts or components are fixed without any relative movement;

[0021] A rotational connection is a connection between parts that allows the parts to rotate relative to each other;

[0022] Threaded connection is a detachable fixed connection with the advantages of simple structure, reliable connection, and easy assembly and disassembly. It is widely used in mechanical engineering and connection structure fields.

[0023] A sliding connection is a connection between parts that allows the parts to slide relative to each other.

[0024] Beneficial effects of the present invention:

[0025] 1. The present invention effectively prevents explosions by reducing the oxygen content. After an explosion in a mine, the coal dust concentration increases sharply instantly. After the coal dust concentration sensor detects a signal, it controls the motor to operate, causing the limestone and hydrochloric acid solution to come into contact and react. A large amount of carbon dioxide gas produced by the reaction is discharged to the air outlet through a pipe, thereby greatly reducing the oxygen content entering the mine, thereby preventing coal dust explosions.

[0026] 2. After the air is pressurized, the present invention sprays water from the atomizing nozzle, and then the water mist is discharged into the mine synchronously with the air from the air outlet. While ventilating, the water mist is used to reduce dust, thereby reducing the dust concentration inside the mine at normal times. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0028] Figure 1 1 is a schematic diagram of the overall structure of an embodiment of the present invention;

[0029] Figure 2 is a schematic top view of the structure of an embodiment of the present invention;

[0030] Figure 3 is a partial structural diagram of a spray assembly according to an embodiment of the present invention;

[0031] Figure 4 is a schematic diagram of the internal structure of the fixed housing according to an embodiment of the present invention;

[0032] Figure 5 is a partial structural diagram of a pressurizing assembly according to an embodiment of the present invention;

[0033] Figure 6 It is a schematic diagram of the cross-sectional structure of the emergency component of an embodiment of the present invention.

[0034] In the figure: 1. Base plate; 11. First motor; 12. Protective housing; 13. Transmission rod; 14. Connector; 2. Exhaust assembly; 20. Housing; 21. Air inlet; 22. Impeller; 23. Air outlet; 3. Spray assembly; 30. Fixed housing; 31. Rotating rod; 32. Transmission chain; 33. Electric control valve; 34. Atomizing nozzle; 35. Water inlet pipe; 36. Impact plate; 4. Separator; 41. First reciprocating screw; 42. Slider; 43. Control switch; 5. Pressurizing assembly; 50. Pressurizer; 51. Air bag; 52. Inlet pipe; 53 , exhaust pipe; 54, moving plate; 55, buffer plate; 56, reset spring; 57, extrusion plate; 6, emergency component; 60, storage box; 61, coal dust concentration sensor; 62, trigger chamber; 63, motor; 64, take-up shaft; 65, cable; 66, adjustment plate; 7, first bevel gear; 71, second reciprocating screw; 72, second bevel gear; 73, lifting block; 74, slide bar; 75, moving block; 76, cutting blade; 77, No. 1 chamber; 78, No. 2 chamber; 8, diaphragm; 81, fixed plate; 82, filter; 83, connecting pipe. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0036] See also Figure 1 、 Figure 2 、 Figure 3 and Figure 6 A coordinated ventilation, dust reduction and explosion-proof integrated device for use after mine blasting is characterized in that it includes an exhaust component 2, a spray component 3 and an emergency component 6. The exhaust component 2 includes an air inlet 21 and an air outlet 23 for ventilating the mine shaft. The emergency component 6 is installed on the top of the air outlet 23. The spray component 3 includes an atomizing nozzle 34. The atomizing nozzle 34 atomizes water. The atomized water is discharged from the air outlet 23 along with the air. The water mist contacts and combines with the coal dust under the mine, thereby reducing the coal dust under the mine after blasting. Concentration, emergency component 6, including coal dust concentration sensor 61, chamber No. 1 77 and chamber No. 2 78, hydrochloric acid solution is stored in chamber No. 1 77, and a large amount of limestone is stored in chamber No. 2 78. Chamber No. 1 77 and chamber No. 2 78 are separated by a corrosion-resistant diaphragm 8. After the mine blasting, the diaphragm 8 ruptures, and the hydrochloric acid and limestone contact and react to produce a large amount of carbon dioxide gas. The carbon dioxide gas is discharged into the interior of the mine along the exhaust component 2, thereby reducing the oxygen content in the mine, so that the coal dust cannot reach the explosion conditions, and prevent coal dust explosion.

[0037] Specifically, when the present invention is used, the coal dust concentration surges instantly after an explosion in a mine. After the coal dust concentration sensor 61 detects a signal, it controls the motor 63 to operate, causing the limestone and the hydrochloric acid solution to come into contact and react. A large amount of carbon dioxide gas generated by the reaction is discharged to the air outlet 23 through the pipeline, thereby greatly reducing the oxygen content entering the mine and preventing coal dust explosions.

[0038] It should be noted that when exhausting, water mist and carbon dioxide are sprayed on the top of the coal dust in an upward jet mode to prevent the coal dust from spreading further. The carbon dioxide will settle from the high point to the ground, further preventing the diffusion of gas in the coal dust and effectively preventing the explosion of coal dust after blasting.

[0039] It should be noted that the emergency component will not be activated during normal ventilation. The present invention can perform normal ventilation. When blasting is carried out in the mine, the dust concentration increases sharply, and the concentration of coal dust and gas increases sharply, which is very likely to cause a secondary explosion of coal dust and gas. Therefore, when the coal dust concentration sensor 61 detects a signal, water mist and carbon dioxide are sprayed simultaneously to dilute the oxygen concentration in the mine, so that the gas and coal dust cannot reach the critical point of explosion, thereby preventing a secondary explosion.

[0040] It should be noted that the density of gas is less than that of air and it will float above. Therefore, when spraying carbon dioxide, the present invention changes the spray angle through the adjustment plate 66 so that the carbon dioxide is sprayed upward. The carbon dioxide gas suppresses the gas concentration from above, diluting the gas and preventing the gas concentration from reaching the critical point of explosion.

[0041] It should be noted that when blasting operations are carried out in mines, an operating range will be demarcated and no workers will be allowed to enter the operating range. Blasting operations can only be carried out after confirming that no one is in the operating range. Therefore, injecting carbon dioxide gas into the mine after the explosion will not harm the health of the workers. They only need to wait until the environmental conditions in the mine are safe before re-entering.

[0042] It should be noted that, in the present invention, limestone and hydrochloric acid solution are stored according to actual needs. Limestone can be stored from minerals mined from mines, which is a local material and reduces economic losses. In addition, the size of the storage container can be designed according to actual needs, which is highly flexible and can be flexibly designed according to different underground conditions.

[0043] It should be noted that when there is no blasting operation in the mine, both the present invention and conventional equipment can play the role of ventilation and dust reduction. When the detection value of the coal dust concentration sensor exceeds the threshold, the emergency component is activated and the exhaust component increases the working power to accelerate the mixing and diffusion of carbon dioxide and air. In addition, the spray component is activated 3-5 seconds earlier than the exhaust component, first forming a dust condensation layer through water mist, and then introducing carbon dioxide to avoid the impact diffusion of dust at high concentrations and the carbon dioxide airflow.

[0044] It should be noted that under normal conditions, the adjustment plate 66 is in place, and the water mist will diffuse horizontally. After the mine blasting, the adjustment plate 66 tilts upward to guide the air, water mist and carbon dioxide gas to spray obliquely upward to cover the top space of the mine. The carbon dioxide airflow mainly acts on the space above 3m, using the density difference to suppress the gas from floating, forming a "gas isolation layer". The two form a three-dimensional prevention and control network. The present invention shows how the ventilation device can enhance the explosion-proof efficiency of carbon dioxide through airflow regulation. At the same time, carbon dioxide optimizes the targeting of ventilation and dust reduction by changing the gas density, forming a "1+1>2" synergistic mechanism.

[0045] See also Figure 1 and Figure 2 The exhaust assembly 2 is provided with a base plate 1 at the bottom, a first motor 11 is provided at the top of the base plate 1, a protective shell 12 is provided at the top of the base plate 1, a connecting piece 14 is provided at the top of the base plate 1, a transmission rod 13 is provided at one end of the connecting piece 14, and one end of the transmission rod 13 extends into the interior of the protective shell 12, and the other end of the transmission rod 13 extends into the interior of the exhaust assembly 2, the output end of the first motor 11 extends into the interior of the protective shell 12, and the output end of the first motor 11 is connected to the transmission rod 13 through a belt drive. The exhaust assembly 2 is provided with a shell 20 installed on the top of the base plate 1, and an air inlet 21 is provided on one side outer wall of the shell 20. An impeller 22 is provided inside the air inlet 21, and the impeller 22 is transmission-connected to the transmission rod 13. An air outlet 23 is provided at one end of the shell 2.

[0046] Specifically, the first motor 11 provides power to the impeller 22 of the exhaust assembly 2 through the transmission rod 13. The impeller 22 rotates to suck in external air through the air inlet 21, and then the air is discharged from the air outlet 23, thereby realizing the ventilation function under the mine.

[0047] See also Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5The spray assembly 3 includes a fixed shell 30 installed on the outer wall of the air outlet 23, a rotating rod 31 is installed through the outer wall of the fixed shell 30, and a transmission chain 32 is installed around the outer wall of the rotating rod 31. The rotating rod 31 is connected to the transmission rod 13 through the transmission chain 32. A water inlet pipe 35 is installed on the top of the outer wall of the fixed shell 30, and an electric control valve 33 is installed on the outer wall of the water inlet pipe 35. An atomizing nozzle 34 is installed on the outer wall of the fixed shell 30, and one end of the atomizing nozzle 34 extends into the interior of the air outlet 23. An impact plate 36 is installed on the outer wall of the rotating rod 31. The top of the partition plate 4 is installed with a pressurizing assembly 5 The pressurizing assembly 5 includes two pressurizers 50 installed above the partition plate 4. A resettable airbag 51 is installed on the inner wall of the pressurizer 50, and an air inlet pipe 52 is installed on the outer wall of the airbag 51. An exhaust pipe 53 is installed at one end of the airbag 51, and a one-way valve is installed on the outer wall of the air inlet pipe 52 and the exhaust pipe 53. A movable plate 54 is installed through the outer wall of the pressurizer 50, and a buffer plate 55 is installed at one end of the movable plate 54. A reset spring 56 is installed on the outer wall of the buffer plate 55. One end of the reset spring 56 is fixedly connected to the outer wall of the pressurizer 50, and an extrusion plate 57 is installed at the other end of the movable plate 54.

[0048] Specifically, the rotating rod 31 rotates to drive the impact plate 36 to reciprocate and contact the buffer plate 55, so that the buffer plate 55 moves to drive the movable plate 54 and the extrusion plate 57 to squeeze the airbag 51. The air in the airbag 51 enters the interior of the fixed shell 30 through the exhaust pipe 53. Water is stored inside the fixed shell 30. After being pressurized by air, the water is sprayed out from the atomizing nozzle 34, and then the water mist is discharged into the interior of the mine synchronously with the air from the air outlet 23. While ventilating, the water mist is used to reduce dust, thereby reducing the dust concentration inside the mine at normal times.

[0049] See also Figure 4 A partition plate 4 is installed on the inner wall of the fixed shell 30, and a first reciprocating screw 41 is installed on the top of the partition plate 4, and one end of the first reciprocating screw 41 is fixedly connected to one end of the rotating rod 31, and a slider 42 is installed on the outer wall of the first reciprocating screw 41, and the first reciprocating screw 41 and the slider 42 are connected by a ball screw, and a control switch 43 is installed on the top of the partition plate 4, and the control switch 43 is electrically connected to the electric control valve 33 through a wire, fixing the shell 30.

[0050] Specifically, the first reciprocating screw 41 drives the slider 42 to descend and contact the control switch 43. The control switch 43 controls the electric control valve 33 to open, so that the external water is replenished into the interior of the fixed shell 30, so that the water in the fixed shell 30 is always maintained at a certain water level.

[0051] See also Figure 6The emergency component 6 includes a storage box 60 installed on the top of the air outlet 23, a coal dust concentration sensor 61 is installed on the outer wall of the storage box 60, a trigger chamber 62 is installed on the inner top wall of the storage box 60, a motor 63 is installed on the inner wall of the trigger chamber 62, a take-up shaft 64 is installed on the output end of the motor 63, a cable 65 is installed around the outer wall of the take-up shaft 64, an adjustment plate 66 is movably installed on the inner wall of the air outlet 23, and one end of the cable 65 is fixedly connected to the outer wall of the adjustment plate 66.

[0052] Specifically, the motor 63 drives the take-up shaft 64 to rotate, the take-up shaft 64 drives the cable 65 to tighten, and the tightening of the cable 65 drives the adjustment plate 66 to tilt up, so that the air discharged from the air outlet 23 is sprayed upward, and water mist and carbon dioxide gas are released from above, which can effectively prevent coal dust explosion.

[0053] See also Figure 6 The outer wall of the second reciprocating screw rod 71 is provided with a first bevel gear 7, and the bottom of the trigger chamber 62 is penetrated by a second reciprocating screw rod 71. The top of the second reciprocating screw rod 71 is provided with a second bevel gear 72, and the first bevel gear 7 is meshed with the second bevel gear 72. The outer wall of the second reciprocating screw rod 71 is provided with a lifting block 73. The bottom of the trigger chamber 62 is provided with a slide rod 74. The outer wall of the slide rod 74 is slidably provided with a moving block 75. The moving block 75 is fixedly connected to the lifting block 73. The outer wall of the moving block 75 is provided with a cutting blade 76. The inner wall of the storage box 60 is provided with a diaphragm 8. The right side of the diaphragm 8 is the No. 1 cavity 77 and the right side is the No. 2 cavity 78. The diaphragm 8 is located on one side of the cutting blade 76. The inner wall of the storage box 60 is provided with a fixing plate 81. The top of the fixing plate 81 is provided with a filter screen 82. The outer wall of the storage box 60 is provided with a connecting pipe 83, and one end of the connecting pipe 83 extends to the interior of the air inlet and outlet 23. The outer wall of the connecting pipe 83 is provided with a one-way valve.

[0054] Specifically, the first bevel gear 7 is engaged with the second bevel gear 72 to drive the second reciprocating screw 71 to rotate, thereby causing the cutting blade 76 to rise. The cutting blade 76 cuts the diaphragm 8 while rising, causing the limestone and hydrochloric acid solution to contact and react, producing a large amount of carbon dioxide gas. The carbon dioxide gas is then discharged from the air outlet 23, effectively reducing the oxygen content in the mine, thereby preventing coal dust explosions.

[0055] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0056] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and modifications are intended to fall within the scope of the present invention.

Claims

1. A coordinated ventilation, dust reduction and explosion-proof integrated device for use after mine blasting, characterized in that: It includes an exhaust component (2), a spray component (3) and an emergency component (6); An exhaust assembly (2) includes an air inlet (21) and an air outlet (23) for ventilating the mine underground, and an emergency assembly (6) is installed on top of the air outlet (23); The spray assembly (3) includes an atomizing nozzle (34), which atomizes water. The atomized water is discharged from the air outlet (23) along with the air. The water mist contacts and combines with the coal dust in the mine, thereby reducing the coal dust concentration in the mine after blasting. The emergency component (6) includes a coal dust concentration sensor (61), a first cavity (77) and a second cavity (78). The first cavity (77) stores hydrochloric acid solution, and the second cavity (78) stores a large amount of limestone. The first cavity (77) and the second cavity (78) are separated by a corrosion-resistant diaphragm (8). After the mine blast, the diaphragm (8) ruptures, and the hydrochloric acid and limestone react to produce a large amount of carbon dioxide gas. The carbon dioxide gas is discharged into the mine along the exhaust component (2), thereby reducing the oxygen content in the mine, preventing the coal dust from reaching the explosion condition, and preventing the coal dust explosion.

2. The integrated device for coordinated ventilation, dust reduction and explosion protection after mine blasting according to claim 1, characterized in that: The bottom of the exhaust assembly (2) is installed with a base plate (1), the top of the base plate (1) is installed with a first motor (11), the top of the base plate (1) is installed with a protective shell (12), the top of the base plate (1) is installed with a connecting piece (14), one end of the connecting piece (14) is installed with a transmission rod (13), and one end of the transmission rod (13) extends into the interior of the protective shell (12), and the other end of the transmission rod (13) extends into the interior of the exhaust assembly (2), the output end of the first motor (11) extends into the interior of the protective shell (12), and the output end of the first motor (11) is connected to the transmission rod (13) through a belt drive.

3. The integrated device for coordinated ventilation, dust reduction and explosion protection after mine blasting according to claim 2, characterized in that: An exhaust assembly (2) is installed on the top of the base plate (1), and the exhaust assembly (2) includes a shell (20) installed on the top of the base plate (1). An air inlet (21) is provided on an outer wall of one side of the shell (20), and an impeller (22) is installed inside the air inlet (21). The impeller (22) is connected to the transmission rod (13) in a transmission manner. An air outlet (23) is installed at one end of the shell (20).

4. The integrated device for coordinated ventilation, dust reduction and explosion protection after mine blasting according to claim 3 is characterized in that: The spray assembly (3) comprises a fixed shell (30) mounted on the outer wall of the air outlet (23); a rotating rod (31) is installed through the outer wall of the fixed shell (30); a transmission chain (32) is installed around the outer wall of the rotating rod (31); the rotating rod (31) and the transmission rod (13) are connected to each other by the transmission chain (32); a water inlet pipe (35) is installed on the top of the outer wall of the fixed shell (30); an electric control valve (33) is installed on the outer wall of the water inlet pipe (35); an atomizing nozzle (34) is installed on the outer wall of the fixed shell (30); one end of the atomizing nozzle (34) extends into the interior of the air outlet (23); and an impact plate (36) is installed on the outer wall of the rotating rod (31).

5. The integrated device for coordinated ventilation, dust reduction and explosion protection after mine blasting according to claim 4 is characterized in that: A partition plate (4) is installed on the inner wall of the fixed shell (30), a first reciprocating screw (41) is installed on the top of the partition plate (4), and one end of the first reciprocating screw (41) is fixedly connected to one end of the rotating rod (31), a slider (42) is installed on the outer wall of the first reciprocating screw (41), and the first reciprocating screw (41) and the slider (42) are connected by a ball screw, and a control switch (43) is installed on the top of the partition plate (4), and the control switch (43) is electrically connected to the electric control valve (33) by a wire.

6. The integrated device for coordinated ventilation, dust reduction and explosion protection after mine blasting according to claim 5, characterized in that: A pressurizing assembly (5) is installed on the top of the partition plate (4). The pressurizing assembly (5) includes two pressurizers (50) installed above the partition plate (4). A resettable airbag (51) is installed on the inner wall of the pressurizer (50). An air inlet pipe (52) is installed on the outer wall of the airbag (51). An exhaust pipe (53) is installed at one end of the airbag (51). Both the air inlet pipe (52) and the exhaust pipe (53) are installed with a one-way valve on their outer walls. A movable plate (54) is installed through the outer wall of the pressurizer (50). A buffer plate (55) is installed at one end of the movable plate (54). A reset spring (56) is installed on the outer wall of the buffer plate (55). One end of the reset spring (56) is fixedly connected to the outer wall of the pressurizer (50). An extrusion plate (57) is installed at the other end of the movable plate (54).

7. The integrated device for coordinated ventilation, dust reduction and explosion protection after mine blasting according to claim 1, characterized in that: The emergency assembly (6) comprises a storage box (60) mounted on the top of the air outlet (23); a coal dust concentration sensor (61) is mounted on the outer wall of the storage box (60); a trigger chamber (62) is mounted on the inner top wall of the storage box (60); a motor (63) is mounted on the inner wall of the trigger chamber (62); a take-up shaft (64) is mounted on the output end of the motor (63); a cable (65) is mounted around the outer wall of the take-up shaft (64); an adjustment plate (66) is movably mounted on the inner wall of the air outlet (23), and one end of the cable (65) is fixedly connected to the outer wall of the adjustment plate (66).

8. The integrated device for coordinated ventilation, dust reduction and explosion protection after mine blasting according to claim 7, characterized in that: The outer wall of the take-up shaft (64) is installed with a first bevel gear (7), the bottom of the trigger chamber (62) is penetrated by a second reciprocating screw rod (71), the top of the second reciprocating screw rod (71) is installed with a second bevel gear (72), and the first bevel gear (7) is meshed with the second bevel gear (72), the outer wall of the second reciprocating screw rod (71) is installed with a lifting block (73), the bottom of the trigger chamber (62) is installed with a slide rod (74), the outer wall of the slide rod (74) is slidably installed with a moving block (75), the moving block (75) is fixedly connected to the lifting block (73), and the outer wall of the moving block (75) is installed with a cutting blade (76).

9. The integrated device for coordinated ventilation, dust reduction and explosion protection after mine blasting according to claim 7, characterized in that: The inner wall of the storage box (60) is installed with a diaphragm (8), the right side of the diaphragm (8) is the first cavity (77), and the right side is the second cavity (78), the diaphragm (8) is located on one side of the cutting blade (76), the inner wall of the storage box (60) is installed with a fixing plate (81), the top of the fixing plate (81) is installed with a filter screen (82), the outer wall of the storage box (60) is installed with a connecting pipe (83), and one end of the connecting pipe (83) extends to the inside of the air inlet and outlet (23), and the outer wall of the connecting pipe (83) is installed with a one-way valve.

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