Air-volume-controllable corrugated dust settling system for air return crossheading of fully-mechanized face

Abstract

The invention provides a fully mechanized face air return crossheading air volume controllable corrugated dust fall system, which comprises corrugated dust fall plates, an opening and closing air regulation plate and a man-vehicle passing door, the corrugated dust fall plates are of corrugated plate structures, the two ends of the corrugated dust fall plates in the length direction are respectively a windward end and a leeward end, and the man-vehicle passing door is arranged between the windward ends of the two corrugated dust fall plates in an openable and closable manner; the corrugated dust falling plate and the side wall of the fully-mechanized face air return gate road are spaced so that dust falling channels can be formed between the corrugated dust falling plate and the side wall of the fully-mechanized face air return gate road, the distance between the corrugated dust falling plate and the side wall of the fully-mechanized face air return gate road is gradually decreased in the direction from the windward end to the leeward end, and each opening and closing air adjusting plate is arranged at an inlet of one dust falling channel. The opening and closing air adjusting plate can be arranged in a swinging mode so as to adjust the opening size of the inlet of the dust falling channel. According to the system provided by the invention, through the design of the corrugated dust falling plate and the opening and closing air adjusting plate, the dust concentration in a fully-mechanized face can be effectively reduced under the condition that water is not consumed, the ventilation effect is improved, and the health risk of miners is reduced.

Description

Technical Field

[0001] The present invention relates to the field of mine ventilation and safety technology, and in particular to a fully mechanized mining face return air chute with controllable air volume and corrugated dust reduction system. Background Art

[0002] A large amount of dust will be generated during the coal cutting process in the fully mechanized mining face of a coal mine. However, due to the low efficiency of the spray dust reduction method commonly used in the fully mechanized mining face, a large amount of dust is not effectively settled and enters the return air chute. During the coal cutting process, the average dust concentration in the return air chute seriously exceeds the standard. At present, the dust in the return air chute is generally removed by spray dust reduction and regular flushing. The dust control effect is poor and no effective control method has been formed.

[0003] The existing technology is unable to settle the high-concentration dust emitted from the comprehensive mining face in real time. Although there are spray dust reduction and regular flushing, they cannot meet the needs of dust reduction and removal. In addition, spraying and flushing cause a large amount of water consumption, and the dust removal effect is poor. Summary of the invention

[0004] The present invention provides a corrugated dust reduction system with controllable air volume for a return air chute of a fully mechanized mining face, so as to solve the problem of large water consumption in dust removal of the return air chute of a fully mechanized mining face in the prior art.

[0005] In order to solve the above problems, the present invention provides a corrugated dust suppression system with controllable air volume in the return air chute of a comprehensive mining face, comprising a corrugated dust suppression plate, an opening and closing air regulating plate and a pedestrian and vehicle passage door arranged in the return air chute of the comprehensive mining face, the corrugated dust suppression plate is a corrugated plate structure, there are two corrugated dust suppression plates, there are two opening and closing air regulating plates, the two opening and closing air regulating plates and the two corrugated dust suppression plates are arranged one by one, the two ends of the corrugated dust suppression plate in the length direction are respectively the windward end and the leeward end, and the pedestrian and vehicle passage door can be opened and closed and is arranged on the two corrugated dust suppression plates the corrugated dust suppression plate is arranged along the length direction of the return air chute of the comprehensive mining face, the corrugated dust suppression plate is spaced from the side wall of the return air chute of the comprehensive mining face to form a dust reduction channel therebetween, in the direction from the windward end of the corrugated dust suppression plate to the leeward end of the corrugated dust suppression plate, the distance between the corrugated dust suppression plate and the side wall of the return air chute of the comprehensive mining face gradually decreases, each opening and closing air regulating plate is respectively arranged at the entrance of a dust reduction channel, and the opening and closing air regulating plate can be swingably arranged to adjust the opening size of the entrance of the dust reduction channel.

[0006] Furthermore, the controllable air volume corrugated dust reduction system for the return air chute of the comprehensive mining face also includes an installation frame, which is fixed in the return air chute of the comprehensive mining face, the windward end of the corrugated dust reduction plate and the pedestrian and vehicle access door are installed on the installation frame, and one side of the opening and closing air regulating plate is hinged to the installation frame.

[0007] Furthermore, the controllable air volume corrugated dust reduction system of the return air chute of the comprehensive mining face also includes two position adjustment rails, which are fixed to the mounting frame. The position adjustment rails are semi-annular structures, and the other side of each opening and closing air regulating plate is coordinated with the corresponding position adjustment rail guide.

[0008] Furthermore, the controllable air volume corrugated dust reduction system of the return air chute of the comprehensive mining face also includes a driving unit, which is installed on the mounting frame or the position adjustment guide rail or the opening and closing air regulating plate, and the driving unit is used to drive the opening and closing air regulating plate to swing.

[0009] Furthermore, a semi-annular rack is provided on the position adjustment guide rail, and the driving part includes a driving motor and a driving gear. The driving motor is installed on the opening and closing air regulating plate, and the driving gear is installed on the output shaft of the driving motor. The driving gear is meshed with the semi-annular rack.

[0010] Furthermore, the controllable air volume corrugated dust reduction system for the return air chute of the comprehensive mining face also includes a monitoring device and a controller. The monitoring device is used to monitor the dust concentration in the environment around the opening and closing air regulating plates. The monitoring device and the driving unit are both electrically connected to the controller. The controller controls the action of the driving unit according to the monitoring results of the monitoring device.

[0011] Furthermore, the monitoring device is installed on the opening and closing air regulating plate, and the monitoring device includes a plurality of infrared monitors facing in different directions, and the plurality of infrared monitors are used to monitor dust concentrations in different directions.

[0012] Furthermore, the controllable air volume corrugated dust suppression system of the return air chute of the comprehensive mining face also includes two mesh dust storage boxes, which are respectively located under the corresponding corrugated dust suppression plates. The mesh dust storage boxes are densely covered with multiple meshes for collecting dust falling from the corrugated dust suppression plates.

[0013] Furthermore, the mesh dust storage box includes a bottom plate and grid bars arranged in multiple rows and columns on the bottom plate, the grid bars divide a plurality of mesh holes, and water is injected into the bottom of the mesh holes.

[0014] Furthermore, the pedestrian and vehicle access door includes a first door panel and a second door panel, one side of the first door panel is hinged to the mounting frame, and the other side of the first door panel is hinged to the second door panel, wherein the second door panel can be opened alone, or both the second door panel and the first door panel can be opened.

[0015] The technical solution of the present invention is applied to provide a corrugated dust suppression system with controllable air volume in the return air chute of a comprehensive mining face, comprising a corrugated dust suppression plate, an opening and closing air regulating plate and a pedestrian and vehicle passage door arranged in the return air chute of the comprehensive mining face, the corrugated dust suppression plate is a corrugated plate structure, there are two corrugated dust suppression plates, there are two opening and closing air regulating plates, the two opening and closing air regulating plates and the two corrugated dust suppression plates are arranged in a one-to-one correspondence, the two ends of the corrugated dust suppression plate in the length direction are respectively the windward end and the leeward end, and the pedestrian and vehicle passage door can be opened and closed and is arranged at the two corrugated dust suppression plates Between the windward ends; the corrugated dust suppression plate is arranged along the length direction of the return air chute of the comprehensive mining face, and the corrugated dust suppression plate is spaced from the side wall of the return air chute of the comprehensive mining face to form a dust reduction channel therebetween. In the direction from the windward end of the corrugated dust suppression plate to the leeward end of the corrugated dust suppression plate, the distance between the corrugated dust suppression plate and the side wall of the return air chute of the comprehensive mining face gradually decreases. Each opening and closing air regulating plate is respectively arranged at the entrance of a dust reduction channel, and the opening and closing air regulating plate can be swingably arranged to adjust the opening size of the entrance of the dust reduction channel.

[0016] In this scheme, the corrugated dust suppression plate adopts a corrugated plate structure, and the surface increases the time and distance of air flow, so that when the airflow passes, the dust and the corrugated dust suppression plate collide continuously, which can better carry and capture dust particles in the air, and finally make the dust particles fall into the dust suppression channel formed between the corrugated dust suppression plate and the side wall interval of the return air chute of the fully-mechanized mining face, so as to prevent the dust from being suspended in the air and reduce the dust concentration in the working environment of the coal mine. With this scheme, dust can be removed without consuming water. The opening and closing air regulating plate is set at the entrance of the dust suppression channel, and the air flow rate can be controlled by adjusting the opening size. This controllable air volume design helps to flexibly adjust the air volume according to the actual situation and ventilation needs to ensure the best dust reduction effect and ventilation conditions, and avoid excessive or insufficient ventilation causing uneven air flow, which affects the safety of the fully-mechanized mining face. In addition, the air volume can be adjusted according to the changes in the dust concentration of the fully-mechanized mining face to maintain the best ventilation and dust reduction effect, thereby reducing the harm of dust to the health of miners, ensuring the safety of mine operations, and reducing unnecessary energy waste and improving energy utilization efficiency. The pedestrian and vehicle access doors set at the windward end of the two corrugated dust reduction plates facilitate the passage of miners and equipment, reducing the interference of the ventilation system on the fully mechanized mining face. The openable and closable design of the pedestrian and vehicle access doors allows the closure of the passage to be flexibly adjusted when necessary, further optimizing the overall ventilation and dust reduction system.

[0017] The controllable air volume corrugated dust suppression system for the return air chute of the fully mechanized mining face provided in this solution can effectively reduce the dust concentration in the fully mechanized mining face without consuming water, improve ventilation effect, reduce the health risks of miners, and improve the safety of mine operations through the design of corrugated dust suppression plates and opening and closing air regulating plates with adjustable air volume. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0019] Figure 1 The schematic diagram of the structure of the fully mechanized mining face return air chute controllable air volume corrugated dust reduction system provided by the embodiment of the present invention is shown;

[0020] Figure 2 It shows a schematic structural diagram of a monitoring device for a fully mechanized mining face return air chute controllable air volume ripple dust reduction system provided by an embodiment of the present invention;

[0021] Figure 3 A schematic diagram showing the opening of the vehicle and human access door of the fully mechanized mining face return air chute controllable air volume ripple dust suppression system provided by an embodiment of the present invention is shown;

[0022] Figure 4 A schematic structural diagram of a mesh dust storage box of a fully mechanized mining face return air chute controllable air volume corrugated dust reduction system provided by an embodiment of the present invention is shown.

[0023] The above drawings include the following reference numerals:

[0024] 1. Return air chute of comprehensive mining face; 2. Installation frame; 3. Corrugated dust suppression plate; 4. Mesh dust storage box; 5. Opening and closing air regulating plate; 6. Position adjustment guide rail; 7. Monitoring device; 8. Passage door for people and vehicles; 9. Infrared monitor; 10. Controller; 11. Driving gear; 12. First door panel; 13. Second door panel; 14. Grid bars; 15. Mesh; 16. Dust suppression channel. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] like Figures 1 to 4As shown, an embodiment of the present invention provides a corrugated dust suppression system with controllable air volume in a return air chute of a fully mechanized mining face, comprising a corrugated dust suppression plate 3, an opening and closing air regulating plate 5 and a pedestrian and vehicle access door 8 arranged in the return air chute 1 of the fully mechanized mining face, the corrugated dust suppression plate 3 is a corrugated plate structure, there are two corrugated dust suppression plates 3, there are two opening and closing air regulating plates 5, the two opening and closing air regulating plates 5 and the two corrugated dust suppression plates 3 are arranged in a one-to-one correspondence, the two ends of the corrugated dust suppression plate 3 in the length direction are respectively the windward end and the leeward end, and the pedestrian and vehicle access door 8 can be opened and closed and is arranged on the windward side of the two corrugated dust suppression plates 3 ends; the corrugated dust suppression plate 3 is arranged along the length direction of the return air chute 1 of the comprehensive mining face, and the corrugated dust suppression plate 3 is spaced from the side wall of the return air chute 1 of the comprehensive mining face to form a dust reduction channel 16 therebetween. In the direction from the windward end of the corrugated dust suppression plate 3 to the leeward end of the corrugated dust suppression plate 3, the distance between the corrugated dust suppression plate 3 and the side wall of the return air chute 1 of the comprehensive mining face gradually decreases. Each opening and closing air regulating plate 5 is respectively arranged at the entrance of a dust reduction channel 16, and the opening and closing air regulating plate 5 can be swingably arranged to adjust the opening size of the entrance of the dust reduction channel 16.

[0027] In this embodiment, in this scheme, the corrugated dust suppression plate 3 adopts a corrugated plate structure, and the surface increases the time and distance of air flow, so that when the airflow passes, the dust collides with the corrugated dust suppression plate 3 continuously, which can better carry and capture dust particles in the air, and finally make the dust particles fall into the dust suppression channel 16 formed between the corrugated dust suppression plate 3 and the side wall interval of the return air chute 1 of the fully-mechanized mining face, so as to prevent the dust from being suspended in the air and reduce the dust concentration in the working environment of the coal mine. The opening and closing air regulating plate 5 is arranged at the entrance of the dust suppression channel 16, and the air flow rate can be controlled by adjusting the opening size. This controllable air volume design helps to flexibly adjust the air volume according to the actual situation and ventilation requirements to ensure the best dust reduction effect and ventilation conditions, and avoid excessive or insufficient ventilation leading to uneven air flow, which affects the safety of the fully-mechanized mining face. In addition, the air volume can be adjusted according to the change of dust concentration in the fully-mechanized mining face to maintain the best ventilation and dust reduction effect, thereby reducing the harm of dust to the health of miners, ensuring the safety of mine operations, and reducing unnecessary energy waste and improving energy utilization efficiency. The vehicle access door 8 provided at the windward end of the two corrugated dust suppression plates 3 facilitates the passage of miners and equipment, reducing the interference of the ventilation system on the fully mechanized mining face. The vehicle access door 8 can be opened and closed, so that the closure of the passage can be flexibly adjusted when necessary, further optimizing the overall ventilation and dust suppression system.

[0028] The controllable air volume corrugated dust suppression system for the return air chute of the comprehensive mining face provided in this solution can effectively reduce the dust concentration in the comprehensive mining face without consuming water through the design of the corrugated dust suppression plate 3 and the opening and closing air regulating plate 5 with adjustable air volume, improve the ventilation effect, reduce the health risks of miners, and improve the safety of mine operations.

[0029] like Figure 2As shown, the controllable air volume corrugated dust reduction system for the return air chute of the comprehensive mining face also includes an installation frame 2, which is fixed in the return air chute 1 of the comprehensive mining face, the windward end of the corrugated dust reduction plate 3 and the pedestrian and vehicle passage door 8 are both installed on the installation frame 2, and one side of the opening and closing air regulating plate 5 is hinged to the installation frame 2.

[0030] In this embodiment, the mounting frame 2 fixes the corrugated dust suppression plate 3, the opening and closing air regulating plate 5 and the pedestrian and vehicle access door 8 together in the return air chute 1 of the comprehensive mining face, ensuring the firmness of each component in the harsh environment underground, and avoiding displacement, looseness and damage caused by vibration, impact or long-term use. In addition, the mine environment is complex, and the return air chute 1 of the comprehensive mining face is often affected by the pressure from mechanical equipment and wind flow. The setting of the mounting frame 2 improves the system's pressure resistance, making the entire dust reduction system more adaptable to the underground environment, thereby ensuring its long-term stable operation. The mounting frame 2 can also ensure that the positions of the opening and closing air regulating plate 5 and the corrugated dust suppression plate 3 are accurately fixed, making the air volume adjustment and airflow guidance more accurate, which helps to better control the directionality of the wind flow and dust reduction channel, and further improve the dust reduction effect. The pedestrian and vehicle access door 8 is more stable after being installed on the mounting frame 2, so that the door will not shake or fall off when miners or vehicles pass through, improving the safety of mine traffic. One side of the opening and closing air regulating plate 5 is hinged on the mounting frame 2, so that it has higher adjustment flexibility and can accurately adjust the opening angle to meet the ventilation requirements of different comprehensive mining faces, thereby accurately controlling the air volume entering the dust reduction channel 16.

[0031] like Figure 1 As shown, the controllable air volume corrugated dust reduction system of the return air chute 1 of the comprehensive mining face also includes two position adjustment guide rails 6. The position adjustment guide rails 6 are fixed to the mounting frame 2. The position adjustment guide rails 6 are semi-annular structures. The other side of each opening and closing air regulating plate 5 is guided and matched with the corresponding position adjustment guide rail 6.

[0032] In this embodiment, the position adjustment rail 6 is a semi-annular structure, so that the opening and closing air regulating plate 5 can be smoothly moved and adjusted within a wider angle range. This structure allows the opening and closing air regulating plate 5 to adjust the angle according to a predetermined arc to adapt to different air volume requirements, so that the wind speed and air volume entering the dust reduction channel 16 can be better controlled, the dust reduction effect can be ensured, and the adaptability of the system is enhanced. The other side of the opening and closing air regulating plate 5 is guided and coordinated with the position adjustment rail 6 to achieve precise movement and positioning, and the wind flow can flow better along the dust reduction channel, thereby effectively reducing the dust concentration and avoiding unnecessary dust diffusion. This control method avoids human errors, making the angle adjustment of the opening and closing air regulating plate 5 more accurate, thereby more effectively controlling the air volume. In addition, the position adjustment rail 6 fixed on the mounting frame 2 provides additional support for the opening and closing air regulating plate 5, so that the opening and closing air regulating plate 5 is more stable during the adjustment process, will not deviate or shake, is not easily affected by the environment in the mine, and extends the service life of the system.

[0033] Furthermore, the controllable air volume corrugated dust reduction system of the return air chute of the comprehensive mining face also includes a driving unit, which is installed on the mounting frame 2 or the position adjustment guide rail 6 or the opening and closing air regulating plate 5, and the driving unit is used to drive the opening and closing air regulating plate 5 to swing.

[0034] In this embodiment, the addition of the driving unit makes the adjustment of the opening and closing air regulating plate 5 no longer rely on manual operation, and can realize automatic control, thereby reducing the safety risk of human operation. When the driving unit drives the opening and closing air regulating plate 5 to swing, it can realize fine angle adjustment, ensure the accuracy of air volume adjustment, and avoid excessive or insufficient air volume affecting the ventilation effect or dust reduction effect.

[0035] Among them, a semi-annular rack is arranged on the position adjustment guide rail 6, and the driving part includes a driving motor and a driving gear 11. The driving motor is installed on the opening and closing air regulating plate 5, and the driving gear 11 is installed on the output shaft of the driving motor. The driving gear 11 is meshed with the semi-annular rack.

[0036] In this embodiment, the meshing structure of the semi-annular rack and the driving gear makes the opening and closing of the air regulating plate 5 more precise. The driving gear 11 rotates through the output shaft of the driving motor, driving the semi-annular rack to move along the guide rail, ensuring that the air regulating plate can swing within a precise angle range, avoiding excessive or insufficient adjustment, thereby ensuring the accuracy of air volume adjustment. The meshing of the rack and the gear avoids the sliding error that may occur in traditional friction drive, and provides a smoother and more accurate transmission. The drive unit includes a driving motor and a gear transmission system, which can realize automatic adjustment without manual intervention. This design reduces the operating burden of mine workers and reduces the problem of unstable air volume changes caused by inaccurate manual adjustment. Automated adjustment makes air volume control more efficient and accurate.

[0037] like Figure 1 and Figure 2 As shown, the controllable air volume corrugated dust reduction system for the return air chute of the comprehensive mining face also includes a monitoring device 7 and a controller 10. The monitoring device 7 is used to monitor the dust concentration in the environment around the opening and closing air regulating plate 5. The monitoring device 7 and the driving part are both electrically connected to the controller 10. The controller 10 controls the action of the driving part according to the monitoring results of the monitoring device 7.

[0038] In this embodiment, the monitoring device 7 monitors the dust concentration of the environment around the opening and closing air regulating plates 5 in real time, and can accurately reflect the dust conditions of the current comprehensive mining face. This allows the system to automatically adjust the air volume according to the actual changes in dust concentration, ensuring that the dust reduction effect is always in the best state. The controller 10 automatically controls the action of the drive unit based on the dust concentration data fed back by the monitoring device 7, thereby adjusting the angle and air volume of the opening and closing air regulating plates 5, so that the adjustment of the air volume is proportional to the actual dust concentration. When the dust concentration is high, the system will automatically increase the air volume to enhance ventilation and dust reduction effects; when the dust concentration decreases, the system can appropriately reduce the air volume, which can effectively respond to environmental changes under different working conditions and automatically adapt to the different air volume requirements of the comprehensive mining face of the mine.

[0039] The monitoring device 7 is installed on the opening and closing air regulating plate 5, and the monitoring device 7 includes a plurality of infrared monitors 9 facing in different directions, and the plurality of infrared monitors 9 are used to monitor dust concentrations in different directions.

[0040] In this embodiment, by setting a plurality of infrared monitors 9 with different orientations, the monitoring device 7 can monitor the dust concentration in the mine in real time in different directions. This all-round monitoring ensures that the system can fully understand the dust distribution in the surrounding environment, rather than being limited to monitoring in a single direction. The dust concentration in the mine may vary at different locations or at different heights, so multi-directional monitoring can provide more comprehensive data support. Moreover, the design of multiple infrared monitors 9 enables the monitoring device 7 to more sensitively capture small changes in different directions, especially when the dust concentration in the mine is low, multi-directional monitoring can detect subtle changes earlier. This helps the system to respond when the dust concentration just rises, so that appropriate measures can be taken at an early stage to prevent the dust concentration from reaching a dangerous level. If one infrared monitor 9 fails, the infrared monitors 9 in other directions can still continue to work, ensuring that the monitoring capability of the system will not be completely lost. Therefore, this design greatly enhances the stability of the system. Moreover, the infrared monitor 9 in a single direction may produce measurement deviations due to interference from the local environment. The data provided by the multiple infrared monitors 9 can be comprehensively analyzed to reduce the errors caused by interference of individual infrared monitors 9 and improve the accuracy and stability of the overall measurement.

[0041] like Figure 1 and Figure 3 As shown, the controllable air volume corrugated dust suppression system of the return air chute of the comprehensive mining face also includes two mesh dust storage boxes 4, and the two mesh dust storage boxes 4 are respectively located under the corresponding corrugated dust suppression plates 3. The mesh dust storage boxes 4 are densely covered with multiple mesh holes 15 for collecting dust falling from the corrugated dust suppression plates 3.

[0042] In this embodiment, the mesh dust box 4 is densely covered with a plurality of meshes 15, which can effectively collect dust falling from the corrugated dust suppression plate 3. The design of the mesh 15 helps to maximize the capture of dust particles in the air flow that have been processed by the corrugated dust suppression plate 3 and fall, preventing dust from re-entering the air or accumulating on underground equipment, and ensuring a more thorough dust reduction effect. If there is no mesh dust box 4, the fallen dust may be picked up again by the air flow on the ground, resulting in a secondary dust problem. The mesh dust box 4 can collect the fallen dust, reduce the occurrence of secondary dust, and thus achieve a more stable dust reduction effect.

[0043] like Figure 3 As shown, the mesh dust storage box 4 includes a bottom plate and grid bars 14 arranged in multiple rows and columns on the bottom plate, the grid bars 14 divide a plurality of mesh holes 15, and water is injected into the bottom of the mesh holes 15.

[0044] In this embodiment, after water is injected into the bottom of the mesh 15, when dust enters the mesh 15 through air flow, it will be adsorbed by the water, and the dust particles are more easily adsorbed and settled when they come into contact with the water surface. The wetting effect of water makes it difficult for the dust to be raised again, thereby effectively preventing the dust from spreading in the air and improving the efficiency of dust reduction. In addition, the water at the bottom of the mesh dust storage box 4 can help clean the dust accumulated on the grid bars 14, prevent the dust from consolidating or over-accumulating in the box, and keep the mesh dust storage box 4 clean and efficient for a long time.

[0045] like Figure 4 As shown, the pedestrian and vehicle access door 8 includes a first door panel 12 and a second door panel 13, one side of the first door panel 12 is hinged to the mounting frame 2, and the other side of the first door panel 12 is hinged to the second door panel 13, wherein the second door panel 13 can be opened alone, or both the second door panel 13 and the first door panel 12 can be opened.

[0046] In this embodiment, the second door panel 13 can be opened separately, and the opening degree of the pedestrian and vehicle passage door 8 can be flexibly adjusted according to actual needs. If only people need to pass, the second door panel 13 can be opened separately to save space and control the traffic volume. The first door panel 12 and the second door panel 13 can be opened at the same time, which provides convenience when a larger passage space is needed. In this way, the passage door can adapt to transportation needs of different scales, so that the system can support mine operations more efficiently. By setting the first door panel 12 and the second door panel 13 to be independently openable, the operator can choose whether to open only the second door panel 13 according to different traffic needs. This helps to reduce the situation where the door is opened too wide, thereby avoiding air flow turbulence or ineffective loss of wind flow, and ensuring that the ventilation system in the mine maintains efficient and stable operation.

[0047] The present application provides a corrugated dust reduction system with controllable air volume for the return air chute of a comprehensive mining face. The system realizes effective control and dust reduction of dust in the return air chute 1 of the comprehensive mining face through the combined design of a corrugated dust reduction plate 3, an opening and closing air regulating plate 5, and a pedestrian and vehicle access door 8. The setting of the opening and closing air regulating plate 5 can dynamically adjust the opening size of the dust reduction channel according to the actual dust concentration, thereby controlling the air volume and improving the dust reduction efficiency. At the same time, the design of the pedestrian and vehicle access door 8 ensures the dust reduction effect without affecting the normal passage of personnel and vehicles. The overall system has a simple structure and is easy to operate. It improves the dust removal efficiency and the air quality of the return air chute 1 of the comprehensive mining face, protects the health of the operating personnel, and improves the safety level of the mine.

[0048] The above is only an optional embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may be modified and varied in various ways. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

[0049] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0050] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of this solution. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being only exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so that once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0051] In the description of this scheme, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing this scheme and simplifying the description. Unless otherwise stated, these directional words do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they cannot be understood as limiting the scope of protection of this scheme; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0052] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0053] In addition, it should be noted that the use of words such as "first" and "second" to limit components is only to facilitate the distinction between corresponding components. Unless otherwise stated, the above words have no special meaning and therefore cannot be understood as limiting the scope of protection of this scheme.

Claims

1. A fully mechanized mining face return air chute with controllable air volume corrugated dust suppression system, characterized in that: The invention comprises a corrugated dust suppression plate (3), an opening and closing air regulating plate (5) and a pedestrian and vehicle access door (8) arranged in a return air chute (1) of a fully mechanized mining face, wherein the corrugated dust suppression plate (3) is a corrugated plate structure, the number of the corrugated dust suppression plates (3) is two, the number of the opening and closing air regulating plates (5) is two, the two opening and closing air regulating plates (5) and the two corrugated dust suppression plates (3) are arranged in a one-to-one correspondence, the two ends of the corrugated dust suppression plate (3) in the length direction are respectively the windward end and the leeward end, and the pedestrian and vehicle access door (8) can be opened and closed and arranged between the windward ends of the two corrugated dust suppression plates (3); the corrugated dust suppression plate (3) is arranged along the return air chute (1) of the fully mechanized mining face ... The corrugated dust suppression plate (3) is arranged in the length direction of the chute (1), and the side wall of the return air chute (1) of the comprehensive mining face is spaced apart to form a dust suppression channel (16) therebetween. In the direction from the windward end of the corrugated dust suppression plate (3) to the leeward end of the corrugated dust suppression plate (3), the distance between the corrugated dust suppression plate (3) and the side wall of the return air chute (1) of the comprehensive mining face gradually decreases. Each of the opening and closing air regulating plates (5) is respectively arranged at the entrance of one of the dust suppression channels (16), and the opening and closing air regulating plates (5) are swingably arranged to adjust the opening size of the entrance of the dust suppression channel (16).

2. The fully mechanized mining face return air chute controllable air volume corrugated dust suppression system according to claim 1 is characterized in that: The controllable air volume corrugated dust suppression system for the return air chute of the comprehensive mining face also includes a mounting frame (2), the mounting frame (2) is fixed in the return air chute (1) of the comprehensive mining face, the windward end of the corrugated dust suppression plate (3) and the pedestrian and vehicle passage door (8) are both mounted on the mounting frame (2), and one side of the opening and closing air regulating plate (5) is hinged to the mounting frame (2).

3. The fully mechanized mining face return air chute controllable air volume corrugated dust suppression system according to claim 2 is characterized in that: The controllable air volume corrugated dust reduction system of the return air chute (1) of the comprehensive mining face also includes two position adjustment guide rails (6), the position adjustment guide rails (6) are fixed to the installation frame (2), the position adjustment guide rails (6) are semi-annular structures, and the other side of each opening and closing air regulating plate (5) is guided and matched with the corresponding position adjustment guide rail (6).

4. The fully mechanized mining face return air chute controllable air volume corrugated dust suppression system according to claim 3 is characterized in that: The controllable air volume corrugated dust reduction system for the return air chute of the fully mechanized mining face also includes a driving unit, which is installed on the mounting frame (2) or the position adjustment rail (6) or the opening and closing air regulating plate (5), and the driving unit is used to drive the opening and closing air regulating plate (5) to swing.

5. The fully mechanized mining face return air chute controllable air volume corrugated dust suppression system according to claim 4 is characterized in that: A semi-annular rack is provided on the position adjustment guide rail (6), and the driving unit comprises a driving motor and a driving gear (11). The driving motor is mounted on the opening and closing air regulating plate (5), and the driving gear (11) is mounted on the output shaft of the driving motor. The driving gear (11) is meshed with the semi-annular rack.

6. The fully mechanized mining face return air chute controllable air volume corrugated dust suppression system according to claim 4 is characterized in that: The controllable air volume corrugated dust reduction system for the return air chute of the fully mechanized mining face also includes a monitoring device (7) and a controller (10). The monitoring device (7) is used to monitor the dust concentration in the environment surrounding the opening and closing air regulating plate (5). The monitoring device (7) and the driving unit are both electrically connected to the controller (10). The controller (10) controls the operation of the driving unit according to the monitoring result of the monitoring device (7).

7. The fully mechanized mining face return air chute controllable air volume corrugated dust suppression system according to claim 6 is characterized in that: The monitoring device (7) is installed on the opening and closing air regulating plate (5), and the monitoring device (7) comprises a plurality of infrared monitors (9) facing in different directions, and the plurality of infrared monitors (9) are used to monitor dust concentrations in different directions.

8. The fully mechanized mining face return air chute controllable air volume corrugated dust suppression system according to claim 1 is characterized in that: The controllable air volume corrugated dust suppression system for the return air chute of the fully mechanized mining face also includes two mesh dust storage boxes (4), the two mesh dust storage boxes (4) are respectively located below the corresponding corrugated dust suppression plates (3), and the mesh dust storage boxes (4) are densely covered with a plurality of mesh holes (15) for collecting dust falling from the corrugated dust suppression plates (3).

9. The fully mechanized mining face return air chute controllable air volume corrugated dust suppression system according to claim 8 is characterized in that: The mesh dust storage box (4) comprises a bottom plate and grid bars (14) arranged in multiple rows and columns on the bottom plate, the grid bars (14) dividing a plurality of mesh holes (15), and water is injected into the bottom of the mesh holes (15).

10. The fully mechanized mining face return air chute controllable air volume corrugated dust suppression system according to claim 2, characterized in that: The pedestrian and vehicle passage door (8) comprises a first door panel (12) and a second door panel (13), one side of the first door panel (12) is hinged to the mounting frame (2), and the other side of the first door panel (12) is hinged to the second door panel (13), wherein the second door panel (13) can be opened alone, or both the second door panel (13) and the first door panel (12) can be opened.

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