CN114607439A - Ventilation and dust removal system and strip mine side wall mining equipment - Google Patents

Abstract

The invention discloses a ventilation and dust removal system and strip mine side mining equipment, wherein the ventilation and dust removal system comprises an air inlet pipeline, a first fan, an air exhaust pipeline, a second fan and a dust removal assembly, the air inlet pipeline is provided with a first end and a second end which are opposite in the extending direction of the air inlet pipeline, the first end of the air inlet pipeline is positioned outside a roadway and communicated with the atmosphere, the second end of the air inlet pipeline and the first fan are both suitable for being arranged in the roadway, the first fan is arranged on the air inlet pipeline and used for blowing air into the roadway so as to dilute harmful gas in the roadway, one end of the air exhaust pipeline is positioned outside the roadway, the other end of the air exhaust pipeline is suitable for being communicated with the interior of the roadway, the second fan is arranged on the air exhaust pipeline and is adjacent to the other end of the air exhaust pipeline so as to exhaust the harmful gas, and the dust removal assembly is connected with one end of the air exhaust pipeline and is positioned outside the roadway. The ventilation and dust removal system provided by the embodiment of the invention has the advantages of high safety performance, good environmental protection effect and the like.

Description

Ventilation and dust removal system and strip mine side wall mining equipment

Technical Field

The invention relates to the technical field of strip mine side mining, in particular to a ventilation and dust removal system and strip mine side mining equipment.

Background

In open-pit coal mines in geological easy-to-slide areas, in order to prevent safety accidents such as landslide and the like, a slowly-inclined side wall mining mode is generally adopted. The mining mode causes a great deal of coal pressing on the edge, and causes serious resource waste. The side mining method is a main method for solving the side coal pressing problem, but in the mining process, harmful substances such as gas, dust and the like can be released from a coal seam, so that the personal safety of operating personnel can be influenced, and the atmosphere is easily polluted.

Disclosure of Invention

The present invention is directed to solving, at least in part, one of the technical problems in the related art.

Therefore, the embodiment of the invention provides a ventilation and dust removal system which is high in safety performance and good in environment-friendly effect.

The embodiment of the invention provides strip mine side mining equipment which is high in safety performance and good in environment-friendly effect.

The ventilation and dust removal system of the embodiment of the invention comprises:

the air inlet pipeline is provided with a first end and a second end which are opposite in the extending direction of the air inlet pipeline, the first end of the air inlet pipeline is positioned outside the roadway and communicated with the atmosphere, the second end of the air inlet pipeline and the first fan are both suitable for being arranged in the roadway, and the first fan is arranged on the air inlet pipeline and used for blowing air into the roadway so as to dilute harmful gas in the roadway;

the device comprises an exhaust pipeline and a second fan, wherein one end of the exhaust pipeline is positioned outside the roadway, the other end of the exhaust pipeline is suitable for being communicated with the interior of the roadway, and the second fan is arranged on the exhaust pipeline and is close to the other end of the exhaust pipeline so as to exhaust the harmful gas;

and the dust removal assembly is connected with one end of the exhaust pipeline and is positioned outside the roadway.

The ventilation and dust removal system provided by the embodiment of the invention has the advantages of high safety performance, good environmental protection effect and the like.

In some embodiments, the exhaust air volume of the exhaust air pipeline is greater than the intake air volume of the intake air pipeline.

In some embodiments, the ventilation and dust removal system further comprises an air door, the air door is suitable for being connected with the inlet of the roadway in a sealing mode, an air outlet and an avoiding area are arranged on the air door, the air outlet is communicated with the air exhaust pipeline, and the avoiding area supplies the air inlet pipeline to pass through.

In some embodiments, the ventilation and dust removal system further comprises a flow guide member disposed at the second end of the air intake duct.

In some embodiments, the dusting assembly comprises a duster and a hopper connected to and located below the duster.

The strip mine highwall mining equipment of the embodiment of the invention comprises:

a coal mining device;

the ventilation and dust removal system is the ventilation and dust removal system in any embodiment, and the first end of the air inlet pipeline is connected with the coal mining device;

and the coal conveying device is used for conveying the side coal mined by the coal mining device to the outside of the roadway, one end of the coal conveying device is arranged outside the roadway, and the other end of the coal conveying device is connected with the coal mining device.

The strip mine side mining equipment provided by the embodiment of the invention has the advantages of high safety performance, good environment-friendly effect and the like.

In some embodiments, the coal mining device comprises a coal mining device body and a cutting assembly, the cutting assembly is arranged on the coal mining device body in a swinging mode, the air inlet pipeline comprises a first pipe and a second pipe, the first pipe is fixed on the cutting assembly of the coal mining device, and the first pipe is connected with the second pipe in a swinging mode so as to swing along with the cutting assembly.

In some embodiments, the coal transporting device comprises a coal transporting assembly, the coal transporting assembly comprises a coal transporting part and a driving part, the coal transporting part is fixed on the driving part, the coal transporting part is used for transporting the side coal from the roadway to the outside of the roadway, and the driving part is used for driving the coal transporting assembly to move.

In some embodiments, the coal transporting assembly further comprises a fixing frame, and the second pipe is arranged on the fixing frame and is spaced from the coal transporting component.

In some embodiments, the coal transporting assembly is provided with a plurality of pipes, the second pipe is provided with a plurality of pipes, the second pipes correspond to the coal transporting assemblies one by one, the coal transporting assemblies can be connected with each other, and the second pipes can be communicated with each other.

Drawings

FIG. 1 is a schematic illustration of an open pit highwall mining apparatus according to an embodiment of the present invention.

Fig. 2 is a schematic view of a coal conveyor of a surface highwall mining apparatus according to an embodiment of the present invention.

FIG. 3 is a schematic view of a damper of an air duct dedusting system in accordance with an embodiment of the present invention.

FIG. 4 is a schematic structural diagram of a damper and a damper driving member of the ventilation and dust removal system according to the embodiment of the invention.

FIG. 5 is a schematic view of the damper and another damper drive of the air duct dedusting system in accordance with an embodiment of the present invention.

Reference numerals:

an air inlet pipeline 1; a first pipe 11; a second tube 12; an exhaust duct 2; a first fan 3; a second fan 4; a dust removal assembly 5; a dust remover 51; a hopper 52;

a damper 6; an air outlet 61; an avoidance zone 62; a door curtain 63; an air bag 64; a door frame 65;

a damper driving member 7; a rotary cylinder 71; a connecting rod 72; a support 73;

a coal mining device 8; a cutting assembly 81; an image acquisition component 82; a coal conveying device 9; a coal conveying unit 91; a coal handling component 911; a drive component 912; a fixing frame 913; a first connection portion 914; a second connection portion 915; a stepping platform 10;

a roadway 200; a coal face 201; a roadway entry 202.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

As can be known by those skilled in the art, a large amount of toxic and harmful substances such as dust, gas, carbon monoxide, etc. may be generated during the excavation of the roadway 200, which may not only pollute the atmosphere, but also harm the life safety of the workers.

As shown in fig. 1 to 5, the ventilation and dust removal system according to the embodiment of the present invention includes an air inlet pipeline 1, a first fan 3, an exhaust pipeline 2, a second fan 4, and a dust removal assembly 5.

The air inlet pipeline 1 is provided with a first end and a second end which are opposite to each other in the extending direction of the air inlet pipeline 1, the first end of the air inlet pipeline 1 is located outside the roadway 200 and communicated with the atmosphere, the second end of the air inlet pipeline 1 and the first fan 3 are both suitable for being arranged in the roadway 200, and the first fan 3 is arranged on the air inlet pipeline 1 and used for blowing air into the roadway 200 so as to dilute the gas in the roadway 200.

One end of the exhaust pipeline 2 is located outside the tunnel 200, the other end of the exhaust pipeline 2 is suitable for being communicated with the interior of the tunnel 200, and the second fan 4 is arranged on the exhaust pipeline 2 and is close to the other end of the exhaust pipeline 2 so as to discharge diluted gas.

The dust removing component 5 is connected with one end of the exhaust pipeline 2 and is positioned outside the roadway 200.

For convenience of description, the left-right direction in fig. 1 is hereinafter referred to as the left-right direction of the air intake duct 1.

The first end of the air inlet pipeline 1 is the left end of the air inlet pipeline 1, and the second end of the air inlet pipeline 1 is the right end of the air inlet pipeline 1. The left end of the air inlet pipeline 1 is arranged outside the roadway 200, the left end of the air inlet pipeline 1 can be communicated with the atmosphere, the right end of the air inlet pipeline 1 is arranged in the roadway 200, and further the right end of the air inlet pipeline 1 is arranged near the coal face 201. First fan 3 is the air exhauster, and first fan 3 is established on air inlet pipe 1 so that utilize air inlet pipe 1 to introduce the outside clean air in tunnel 200 in the tunnel 200 to dilute the poisonous and harmful gas of the coal seam release in tunnel 200, for example gas, carbon monoxide etc..

The left end of exhaust pipe 2 arranges outside tunnel 200, and the right-hand member of exhaust pipe 2 arranges in tunnel 200, and second fan 4 is the air exhauster, and second fan 4 is established on exhaust pipe 2 so that the material such as poisonous and harmful gas and dust after utilizing exhaust pipe 2 to dilute in tunnel 200 draws out tunnel 200.

The left end of exhaust duct 2 links to each other with dust removal component 5, and dust removal component 5 can filter particulate matters such as dust in the exhaust duct 2 exhaust gas flow, avoids dust pollution atmosphere.

After the dust in the exhaust duct 2 is filtered, the remaining substances, such as gas, carbon monoxide, etc., diluted in the tunnel 200 are exhausted into the atmosphere through the exhaust duct 2, and the concentration of harmful gases such as gas, carbon monoxide, etc., is reduced to a safe range after dilution, so that there is no fear that the harmful gases such as gas, carbon monoxide, etc., may harm the safety of the operator.

In the related art, in order to ensure ventilation safety in the side mining process, nitrogen is injected into the roadway 200 of the side so as to reduce the oxygen content in the roadway 200 and ensure ventilation safety, but the method has the problems of high economic cost, incapability of timely treating dust and the like. In another related art, the dust in the roadway 200 can be sucked and purified by means of air draft and dust removal. However, due to the size limitation of the equipment in the roadway 200, the gas and dust generated at the cutting head of the coal mining device 8 cannot be processed in time, thereby causing certain potential safety hazards.

When the side wall is mined, by utilizing the ventilation and dust removal system provided by the embodiment of the invention, the air inlet pipeline 1 blows air into the roadway 200, the air exhaust pipeline 2 draws air out of the roadway 200, harmful gases such as gas and carbon monoxide in the roadway 200 are diluted and then discharged out of the roadway 200, and solid particles such as dust can be timely extracted and filtered by the dust removal component 5. By utilizing the ventilation and dust removal system provided by the embodiment of the invention, harmful substances such as dust or gas in the roadway 200 can be prevented from diffusing into the atmosphere, so that the operation safety is improved, and the safe and green mining of the slope coal briquetting is ensured.

Therefore, the ventilation and dust removal system provided by the embodiment of the invention has the advantages of high safety performance, good environmental protection effect and the like.

Optionally, the first fan 3 and the second fan 4 are axial fans.

In some embodiments, the exhaust air volume of the exhaust air pipeline 2 is larger than the intake air volume of the intake air pipeline 1.

For example, the exhaust air volume of the exhaust duct 2 is 1.2 times, 1.5 times, 2 times, 3 times, etc. of the intake air volume of the intake duct 1. Therefore, the ventilation and dust removal system provided by the embodiment of the invention can ensure that harmful substances such as dust or gas in the tunnel 200 can completely enter the atmosphere through the exhaust pipeline 2, so that the harmful substances such as dust or gas are prevented from entering the atmosphere through the tunnel 200, and the environment-friendly effect is good.

In some embodiments, the ventilation and dust removal system further comprises a damper 6, the damper 6 is suitable for being in sealed connection with the roadway inlet 202, the damper 6 is provided with an exhaust port 61 and an avoidance area 62, the exhaust port 61 is communicated with an exhaust pipeline, and the avoidance area 62 is used for the air inlet pipeline 1 to pass through.

As shown in fig. 1, the damper 6 is arranged at the roadway entrance 202, the positions of the air outlet 61 and the avoidance area 62 are designed according to the relative positions of the exhaust pipeline 2 and the air inlet pipeline 1, for example, the exhaust pipeline 2 is arranged above the air inlet pipeline 1, and the air outlet 61 is arranged above the avoidance area 62; alternatively, the exhaust duct 2 and the intake duct 1 are disposed at the same height, and the exhaust port 61 and the evacuation area 62 are disposed at the same height. Therefore, the ventilation and dust removal system of the embodiment of the invention can ensure that an effective air wall is formed at the position of the roadway inlet 202 by using the air door 6, thereby inhibiting harmful substances such as dust or gas in the roadway 200 from diffusing out of the roadway 200, and further improving the safety of the ventilation and dust removal system of the embodiment of the invention.

Because the width of the tunnel 200 is limited, preferably, the exhaust duct 2 is arranged above the air inlet duct 1, and the exhaust port 61 is arranged above the avoidance area 62, so that the ventilation and dust removal system of the embodiment of the invention has a compact structure and is convenient to adapt to the width of the tunnel 200.

Optionally, the damper 6 is provided in the roadway 200 with a distance between the damper 6 and the roadway entry 202 of less than 3 m.

In some embodiments, an air bag 64 is provided between the outer peripheral side of the damper 6 and the inner peripheral side of the tunnel 200 to seal the damper 6 and the tunnel 200. For example, the air bag 64 is fixed on the outer periphery side of the damper 6, and when the ventilation and dust removal system operates, the air bag 64 is inflated to form effective sealing at the contact part of the damper 6 and the roadway 200, so that the sealing performance of the damper 6 is improved, harmful substances such as dust and gas in the roadway 200 are prevented from diffusing to the outside of the roadway 200, and the safety of the ventilation and dust removal system of the embodiment of the invention is improved.

In other embodiments, the damper 6 includes a curtain 63, a door frame 65, and a damper actuator 7, the airbag 64 is connected to the door frame 65, and the curtain 63 has a lower end shape that is adapted to the outer peripheral shape of the air intake duct 1, thereby restricting the escape area 62 for the air intake duct 1 to pass through the damper 6. The damper driving member 7 is provided outside the damper 6 to control opening and closing of the damper 6.

When the air door 6 works, the air door 6 is driven to the position of the roadway inlet 202 by the air door driving piece 7, and then the air bag 64 is inflated, so that the air bag 64 is attached to the inner peripheral wall of the roadway 200, and dust or gas in the roadway 200 is reduced from leaking to the outside of the roadway 200. Utilize door curtain 63 to shelter from near the air inlet pipe way 1, guarantee air inlet pipe way 1's normal use promptly, can further reduce again in the tunnel 200 dust or gas and reveal to the tunnel 200 outside. After the mining operation is completed, the air in the air bag 64 is released and the damper 6 is removed from the roadway entry 202 using the damper driver 7.

Optionally, the damper driver 7 is a hydraulic ram. The number of the hydraulic oil cylinders can be multiple, and the multiple hydraulic oil cylinders are arranged at intervals.

Since the damper 6 is provided with the escape area 62, it is impossible for the damper 6 to completely block the tunnel entrance 202, and the dust concentration in the air becomes higher at the position closer to the damper 6 outside the tunnel 200.

As shown in fig. 4, in some embodiments, the damper driver 7 includes two identically configured telescoping members to control the movement of the damper 6 in the left and right directions.

In other embodiments, as shown in fig. 5, the damper driver 7 includes a swivel cylinder 71, a link 72, and a support bracket 73. The rotary oil cylinder 71 is fixed on the stepping platform 10, one end of the connecting rod 72 is connected with the rotary oil cylinder 71, the other end of the connecting rod 72 is connected with the air door 6 in a welding mode, the middle of the connecting rod 72 is hinged to the supporting frame 73, and when the oil cylinder extends out, the right end of the connecting rod 72 moves upwards relative to the supporting frame 73 to drive the air door 6 to move upwards, so that the air door 6 is separated from the roadway 200. When the oil cylinder retracts, the right end of the connecting rod 72 moves downwards relative to the supporting frame 73, so that the air door 6 is driven to move downwards and is tightly attached to the roadway 200.

In other embodiments, the distance between the left end of the air inlet duct 1 and the damper 6 in the left-right direction is greater than 5 m. Therefore, the air with dust near the air door 6 can be prevented from entering the roadway 200 through the air inlet pipeline 1, so that the air in the air inlet pipeline 1 is ensured to be fresh air, and the dust removal efficiency of the ventilation and dust removal system is improved.

In other embodiments, the ventilation and dust removal system further comprises a dust concentration sensor, the dust concentration sensor is located outside the roadway 200, and the dust concentration sensor is arranged outside the air door 6. Utilize dust concentration sensor can detect the dust concentration in the atmosphere in the air door 6 outside, the dust concentration in the air of tunnel entry 202 department promptly, when dust concentration sensor's numerical value is greater than and predetermines numerical value, then explain the dust concentration in the tunnel 200 too high, then increase dust exhausting fan's rotational speed this moment, improve exhaust pipeline 2's the efficiency of airing exhaust. Therefore, the safety of the ventilation and dust removal system can be improved by utilizing the dust concentration sensor.

In some embodiments, as shown in fig. 1, the air intake pipe 1 includes a first pipe 11 and a second pipe 12, the first pipe 11 is disposed at a second right end of the air intake pipe 1, and the first pipe 11 can swing relative to the second pipe 12. For example, a flexible section is provided between the first tube 11 and the second tube 12 to facilitate the oscillation of the first tube 11 relative to the second tube 12. From this, change the swing position of first pipe 11 and can change the air-out angle of air inlet pipeline 1 to make things convenient for the working condition in ventilation dust pelletizing system adaptation tunnel 200.

In some embodiments, the ventilation and dust removal system further comprises a flow guide member (not shown) disposed at the second end of the air intake duct 1. The diversion piece is arranged at the right end of the air inlet pipeline 1, and particularly, the diversion piece is arranged at the right end of the first pipe 11, so that the air outlet angle of the air inlet pipeline 1 can be further adjusted conveniently by the aid of the diversion piece, and the air outlet angle of the ventilation and dust removal system can be accurately controlled.

Optionally, the diversion part includes a plurality of diversion fins and a diversion driver, and the diversion driver can drive the plurality of diversion fins to rotate, so as to flexibly adjust the air outlet angle of the air inlet pipeline 1.

In some embodiments, the dust removal assembly 5 includes a dust remover 51 and a hopper 52, the hopper 52 being connected to the dust remover 51 and positioned below the dust remover 51.

As shown in fig. 1, the dust remover 51 is located at the left end of the exhaust duct 2, and the second fan 4 draws air and simultaneously provides power for the dust remover 51, so that the energy consumption of the ventilation and dust removal system can be reduced. The hopper 52 is connected with the dust remover 51 in a sealing way, and dust filtered by the dust remover 51 falls into the hopper 52 under the action of gravity so as to be recycled, thereby improving the resource utilization rate.

The ventilation and dust removal system of the embodiment of the invention can filter out dust in the air flow guided out by the exhaust pipeline 2 by using the dust remover 51, thereby avoiding the dust polluting the atmosphere.

An open pit highwall mining apparatus according to an embodiment of the present invention is described below.

The strip mine highwall mining equipment of the embodiment of the invention comprises: a coal mining device 8, a ventilation and dust removal system and a coal conveying device 9. The ventilation and dust removal system is the ventilation and dust removal system in any one of the embodiments, and the first end of the air inlet pipeline 1 is connected with the coal mining device 8. The coal conveying device 9 is used for conveying the side coal mined by the coal mining device 8 to the outside of the roadway 200, one end of the coal conveying device 9 is arranged outside the roadway 200, and the other end of the coal conveying device 9 is connected with the coal mining device 8.

Specifically, the right end of the air inlet pipeline 1 is connected with the coal mining device 8, the left end of the coal conveying device 9 is arranged outside the roadway 200, and the right end of the coal conveying device 9 is connected with the coal mining device 8, so that a coal mine mined by the coal mining device 8 is conveyed out of the roadway 200.

When the strip mine side wall mining equipment provided by the embodiment of the invention works, the coal mining device 8 mines side wall coal in the roadway 200, and the coal conveying device 9 conveys the side wall coal out of the roadway 200. When the coal mining device 8 works, the air inlet pipeline 1 blows air to the coal mining surface 201 so as to dilute harmful gas such as gas flowing out of the coal seam. The exhaust pipe 2 draws air outside the tunnel 200 in the tunnel 200 so as to discharge harmful substances such as gas, dust and the like out of the tunnel 200.

Therefore, the open-pit mine side mining equipment provided by the embodiment of the invention has the advantages of high safety performance, good environment-friendly effect and the like.

Alternatively, the coal mining device 8 may be a continuous miner, a heading machine, or the like.

In some embodiments, as shown in fig. 1, the coal mining device 8 comprises a coal mining device 8 body and a cutting assembly 81, the cutting assembly 81 is swingably provided on the coal mining device 8 body, the air intake duct 1 comprises a first pipe 11 and a second pipe 12, the first pipe 11 is communicated with the second pipe 12, the first pipe 11 is fixed on the cutting assembly 81 of the coal mining device 8, and the first pipe 11 is swingably connected with the second pipe 12 so as to swing with the cutting assembly 81.

Specifically, the cutting assembly 81 is arranged at the right end of the coal mining device 8, the cutting assembly 81 is used for mining the coal on the edge, and the cutting assembly 81 can swing relative to the coal mining device 8 so as to mine the coal on the edge at different positions. The first pipe 11 is fixed on the cutting assembly 81, so that the first pipe 11 can timely blow air to the coal mining surface 201 when the cutting assembly 81 mines the highwall coal, so as to dilute harmful gas such as gas released from the coal seam.

Optionally, a flexible bellows is provided between the first tube 11 and the second tube 12, so that the first tube 11 oscillates relative to the second tube 12.

It should be noted that, in a normal situation, the width dimension of the roadway 200 is smaller than the height dimension of the roadway 200, and the first pipe 11 is arranged above the cutting assembly 81, so that the structure is compact, and the strip mine highwall mining equipment can adapt to the environment of the roadway 200.

In some embodiments, as shown in fig. 2, the coal transporting device 9 includes a coal transporting unit 91, the coal transporting unit 91 includes a coal transporting part 911 and a driving part 912, the coal transporting part 911 is fixed on the driving part 912, the coal transporting part 911 is used for transporting the side coal from the roadway 200 to the outside of the roadway 200, and the driving part 912 is used for driving the coal transporting unit 91 to move. Therefore, the coal conveying part 911 can convey the side coal from the roadway 200 to the outside of the roadway 200, and the driving part 912 can be used for conveniently adjusting the position of the coal conveying unit 91 so that the coal conveying unit 91 can move inside and outside the roadway 200.

Alternatively, the coal transporting component 911 is arranged above the driving component 912, the coal transporting component 911 is a conveyor belt, and the driving component 912 is a trolley with wheels and an explosion-proof engine.

In some embodiments, as shown in fig. 2, the coal transporting unit 91 further includes a fixing frame 913, and the second pipe 12 is disposed on the fixing frame 913 and spaced apart from the coal transporting part 911.

Specifically, the fixing frame 913 is used to fix the second pipe 12, and there are various structures of the fixing frame 913, for example, the fixing frame 913 is annular and provided in plural, and plural fixing frames 913 are provided at intervals in the left-right direction on the coal transporting member 911, and each fixing frame 913 is fixedly connected to the outer peripheral surface of the second pipe 12. Alternatively, the fixing frame 913 is a frame extending in the left-right direction, and the fixing frame 913 is fixedly coupled to the second tube 12.

The fixing frame 913 may be provided at both sides of the coal transporting part 911, for example, the fixing frame 913 is provided between the coal transporting part 911 and the rock wall of the tunnel 200. When the coal transporting unit 91 operates in the tunnel 200, a space between the coal transporting unit 91 and the side wall of the tunnel 200 is small, and preferably, the fixing frame 913 is provided above the coal transporting part 911, thereby contributing to saving of the space in the tunnel 200. From this, utilize mount 913 to be convenient for fixed second pipe 12 to make things convenient for the stable wind-guiding to in the tunnel 200 of second pipe 12, and then be favorable to improving the stability of strip mine highwall mining equipment.

When the strip mine side mining equipment works, the coal mining device 8 continuously moves forwards rightwards to mine side coal, the length of the roadway 200 gradually becomes longer, and the length of the coal conveying device 9 needs to be adjusted along with the length of the roadway 200.

In some embodiments, the coal transporting unit 91 is provided in plurality, the second pipe 12 is provided in plurality, the plurality of second pipes 12 correspond to the plurality of coal transporting units 91 one to one, the plurality of coal transporting units 91 can be connected to each other, and the plurality of second pipes 12 can be communicated with each other.

Specifically, when the coal transporting unit 91 works in the roadway 200, the coal transporting unit 91 moves in the left-right direction, one end of the coal transporting unit 91 is provided with a first connecting portion 914, the other end of the coal transporting unit 91 is provided with a second connecting portion 915, and two adjacent coal transporting units 91 are connected with the second connecting portion 915 through the first connecting portion 914. Adjacent second tubes 12 may also be in communication, for example, with adjacent second tubes 12 connected by a flexible segment.

Alternatively, the second pipe 12 may be a skeleton wind pipe, or a steel wind pipe. Preferably, the second tube 12 is a steel air duct.

Optionally, the flexible section may be a skeleton wind tube, or may be a rubber wind tube.

When the open-pit mine side mining equipment works, the number of the coal conveying units 91 is flexibly selected according to the field working condition. For example, when the coal mining device 8 continuously moves to the right, the coal transporting unit 91 is added outside the roadway 200 so as to transport out coal mines in the roadway 200, and the second pipe 12 is added outside the roadway 200 so as to timely supply air into the roadway 200; when the coal mining device 8 is continuously retreated to the left, the number of the coal conveying units 91 and the second pipes 12 needs to be reduced, and the coal conveying units 91 and the second pipes 12 at the left end of the surface mine highwall mining equipment can be detached.

Therefore, the number of the coal conveying units 91 and the number of the second pipes 12 are selected according to the position of the coal mining device 8 in the roadway 200 so as to be matched with the working condition in the roadway 200, and therefore the flexibility of the surface mine side mining equipment is improved.

It should be noted that, during the operation of the surface mine highwall mining device, the coal conveying unit 91 immediately left to the coal mining device 8 is always connected to the coal mining device 8, and the other coal conveying units 91 are selectively used according to the length of the roadway 200.

Optionally, the first connection portion 914 and the second connection portion 915 are coupled together by a snap or hook fit. Thereby, the connection and the separation of two adjacent coal conveying devices 9 are convenient.

In some embodiments, the surface slope mining apparatus further includes an image acquisition assembly 82 and a controller (not shown in the drawings), the image acquisition assembly 82 is disposed on the coal mining device 8, the controller is located outside the roadway 200, the plurality of image acquisition assemblies 82 are disposed, the plurality of image acquisition assemblies 82 are electrically connected to the controller, the image acquisition assembly 82 is used for acquiring status information of the coal mining device 8, and the controller is used for receiving information transmitted by the image acquisition assembly 82, so that an operator can observe the status of the coal mining device 8.

For example, when the coal mining device 8 works, an operator is located outside the roadway 200, and the operator can acquire the working state of the coal mining device 8 by using the image acquisition assembly 82; when the coal mining device 8 fails, the position of the failure of the coal mining device 8 can be generally judged by using the information collected by the image collecting assembly 82.

Further, as shown in fig. 1, one of the image pickup assemblies 82 is disposed opposite to the right end of the first pipe 11 in the extending direction of the tunnel 200. Therefore, the air flow in the air inlet pipeline 1 can sweep dust on the image acquisition assembly 82, so that the dust is prevented from being accumulated on the image acquisition assembly 82, clear pictures can be acquired by the image acquisition assembly 82, and operators can conveniently observe the state of the cutting assembly 81.

In some embodiments, the surface highwall mining apparatus further comprises a gas concentration sensor disposed within the roadway 200. For example, a gas concentration sensor is provided on the coal mining device 8. The gas concentration sensor can be used for detecting the concentration of gas in the roadway 200, when the value of the gas concentration sensor is higher than a preset value, the concentration of the gas in the roadway 200 is over high, and at the moment, the coal mining device 8 stops mining coal. At this time, the rotation speed of the dust removal fan is increased, and the exhaust efficiency of the exhaust pipeline 2 is improved, so that the concentration of the gas in the roadway 200 is reduced. Therefore, the safety of the open pit mine side mining equipment can be improved by using the gas concentration sensor.

In other embodiments, the surface mine highwall mining apparatus further comprises a stepping platform 10, the damper driving member 7 is connected to the stepping platform 10, and the exhaust duct 2 is fixed to the stepping platform 10.

When the strip mine side wall mining equipment provided by the embodiment of the invention works, the coal mining device 8 mines coal in the roadway 200, the coal conveying device 9 is used for conveying out coal blocks in the roadway, the air in the roadway 200 is continuously replaced by the air inlet pipeline 1 and the air outlet pipeline 2, the air door 6 is arranged at the roadway inlet 202, the coal conveying device 9 and the air inlet pipeline 1 can penetrate through the air door 6 while the roadway inlet 202 is blocked, and the air volume of the air outlet pipeline 2 is larger than that of the air inlet pipeline 1, so that an air wall is formed at the roadway inlet 202, and harmful substances in the roadway 200 can be continuously discharged, therefore, the strip mine side wall mining equipment provided by the embodiment of the invention has the advantages of high safety performance, good environmental protection effect and the like.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless explicitly specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the second feature or the first and second features may be indirectly contacting each other through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims (10)

1. A ventilated dust removal system, comprising:

the air inlet pipeline is provided with a first end and a second end which are opposite in the extending direction of the air inlet pipeline, the first end of the air inlet pipeline is positioned outside the roadway and communicated with the atmosphere, the second end of the air inlet pipeline and the first fan are both suitable for being arranged in the roadway, and the first fan is arranged on the air inlet pipeline and used for blowing air into the roadway so as to dilute harmful gas in the roadway;

the device comprises an exhaust pipeline and a second fan, wherein one end of the exhaust pipeline is positioned outside the roadway, the other end of the exhaust pipeline is suitable for being communicated with the interior of the roadway, and the second fan is arranged on the exhaust pipeline and is close to the other end of the exhaust pipeline so as to exhaust the harmful gas;

and the dust removal assembly is connected with one end of the exhaust pipeline and is positioned outside the roadway.

2. The ventilation and dust removal system of claim 1, wherein the exhaust air volume of the exhaust air duct is greater than the intake air volume of the intake air duct.

3. The ventilation and dust removal system of claim 2, further comprising an air door, wherein the air door is suitable for being in sealing connection with an inlet of the roadway, an air outlet and an avoidance zone are arranged on the air door, the air outlet is communicated with the air exhaust pipeline, and the avoidance zone is used for the air inlet pipeline to pass through.

4. The ventilation and dust removal system of claim 3, further comprising a flow guide member disposed at the second end of the air inlet conduit.

5. The ventilated dust removal system of claim 3, wherein the dust removal assembly comprises a dust remover and a hopper connected to and located below the dust remover.

6. A surface mine highwall mining apparatus, comprising:

a coal mining device;

the ventilation and dust removal system is according to any one of claims 1 to 5, and a first end of the air inlet pipeline is connected with the coal mining device;

and the coal conveying device is used for conveying the side coal mined by the coal mining device to the outside of the roadway, one end of the coal conveying device is arranged outside the roadway, and the other end of the coal conveying device is connected with the coal mining device.

7. The strip mining apparatus of claim 6, wherein the coal mining device includes a coal mining device body and a cutting assembly, the cutting assembly being swingably disposed on the coal mining device body, the air intake line including a first pipe and a second pipe, the first pipe being fixed to the cutting assembly of the coal mining device, the first pipe being swingably connected to the second pipe so as to swing with the cutting assembly.

8. The surface mine highwall mining apparatus of claim 7, wherein the coal handling device comprises a coal handling assembly including a coal handling member secured to the drive member and a drive member for transporting the highwall coal from within the roadway to outside the roadway, the drive member for driving the coal handling assembly to move.

9. The surface mine highwall mining apparatus of claim 8, wherein the coal handling assembly further comprises a mount, the second tube being disposed on the mount and spaced apart from the coal handling member.

10. The surface mine highwall mining apparatus of claim 8 or 9, wherein there are a plurality of the coal conveying assemblies, a plurality of the second pipes are provided, a one-to-one correspondence is provided between the plurality of the second pipes and the plurality of the coal conveying assemblies, a plurality of the coal conveying assemblies can be connected to each other, and a plurality of the second pipes can be communicated with each other.

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