Tunneling face dust control device

Abstract

The invention relates to a tunneling face dust control device which comprises an air pressing barrel arranged on one side of a tunneling roadway in the width direction and an air draft barrel arranged on the other side of the tunneling roadway in the width direction, and further comprises air guide devices arranged on the air draft barrel and the air pressing barrel correspondingly. The air guide device is located on one side of the tunneling roadway in the width direction and provided with a plurality of air ports which are arranged in a multi-layer mode and open towards the other side, and the included angle between the air flow guiding direction of the air ports and the radial plane of the tunneling roadway is adjustable. The air flow flowing through the multiple air ports of the air guide device arranged on the air draft barrel correspondingly forms a plurality of layers of negative pressure areas, the air flow flowing through the multiple air ports of the air guide device arranged on the air pressing barrel correspondingly forms a plurality of layers of air pressing dust control air curtains, and at least one negative pressure area corresponds to at least one air pressing dust control air curtain. According to the technical scheme provided by the invention, the blocking and treatment effects on dust in the tunneling roadway can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of dust control, and in particular to a tunneling surface dust control device. Background Art

[0002] The commonly used ventilation methods for coal mine excavation working faces are forced-in ventilation and long-pressure and short-extraction ventilation. The dust control method is to transform the axial airflow in the compressed air cylinder into a radial airflow that blows vertically to the side wall of the tunnel. The radial airflow forms a compressed air and dust control wind curtain in the tunnel to achieve effective control of the head-on dust. The exhaust fan's exhaust and dust removal can achieve control of the head-on dust.

[0003] However, the wind flow generated by the side air outlet of the traditional dust control device will fan out and the speed will gradually decrease after blowing out, which may fail to cover the entire cross-section of the tunnel, resulting in a certain area of ​​blind spots for the compressed air dust control wind curtain in the tunnel, and the effective dust control range is small. On the other hand, the air outlet angle of the traditional dust control device is fixed, and the air outlet angle cannot be adjusted with the change of dust concentration in the tunnel, and the working mode is single. Summary of the invention

[0004] The invention provides a driving face dust control device to improve the blocking and control effects of dust in the driving tunnel.

[0005] In order to achieve the above-mentioned purpose, the present invention provides a driving surface dust control device, which is applied to a driving tunnel, in which a driving machine is arranged, and the driving surface dust control device comprises a compressed air cylinder arranged on one side of the width direction of the driving tunnel and an exhaust air cylinder arranged on the other side of the width direction of the driving tunnel, the compressed air cylinder and the exhaust air cylinder extend along the length direction of the driving tunnel, and the driving surface dust control device also comprises an air guide device respectively arranged on the exhaust air cylinder and the compressed air cylinder; the air guide device is located on one side of the width direction of the driving tunnel and has a plurality of air outlets arranged in multiple layers with opening directions facing the other side, and the angle between the guiding direction of the air outlet to the airflow and the radial plane of the driving tunnel is adjustable; wherein, the airflow flowing through the plurality of air outlets of the air guide device arranged on the exhaust air cylinder forms a plurality of negative pressure areas in correspondence, and the airflow flowing through the plurality of air outlets of the air guide device arranged on the compressed air cylinder forms a plurality of compressed air dust control wind curtains in correspondence, and at least one negative pressure area corresponds to at least one compressed air dust control wind curtain.

[0006] Furthermore, the air guide device includes an air storage device, an adjustment component and a plurality of air guide plates. The air storage device is arranged on the compressed air cylinder and has a mounting opening. The plurality of air guide plates are arranged in the mounting opening through the adjustment component and are arranged in pairs along the extension direction of the compressed air cylinder. The area between any two adjacent air guide plates forms an air outlet. The adjustment component is used to drive the plurality of air guide plates to rotate synchronously.

[0007] Furthermore, the adjustment component includes a control host, a swing arm, a mounting plate and a transmission component. The mounting plate is arranged in the top area of ​​the mounting port, the transmission component is arranged in the mounting plate and has a plurality of adapter ends protruding from the bottom of the mounting plate and being rotatable, the control host is arranged on the air storage device, the air storage device has a swing groove, the swing arm is swingably arranged in the swing groove and the two ends are respectively connected to the control host and the transmission component in the mounting plate, so that the swing of the swing arm drives the plurality of adapter ends to rotate, and a plurality of air guide plates are arranged at intervals at the mounting port, and an air guide plate is fixedly connected under any adapter end.

[0008] Furthermore, the transmission assembly includes a driving gear, a transmission chain and multiple transmission gears. The driving gear is drivingly connected to the multiple transmission gears through the transmission chain, the swing rod is drivingly connected to the driving gear, the driving gear and the multiple transmission gears are spaced apart in pairs, and the driving gear and any one of the multiple transmission gears have a rotating shaft protruding from the bottom of the mounting plate, and the end of a rotating shaft corresponds to forming a transfer end.

[0009] Furthermore, the control host of at least one air guide device has an infrared sensor and a display screen, the infrared sensor is used to monitor the dust concentration in the excavation tunnel, and the display screen is used to display the monitoring status of the infrared sensor.

[0010] Furthermore, the cross-sectional area of ​​the air storage device in the direction of the wind flow passing through the inside thereof first increases and then decreases.

[0011] Furthermore, the air guiding device also includes a flow regulating member, which is arranged at the outlet of the air storage device, and the area of ​​the outlet blocked by the flow regulating member is adjustable to adjust the air inlet or outlet of the air storage device.

[0012] Furthermore, the projection of the air guide device arranged on the exhaust cylinder on the horizontal plane of the excavation tunnel is the first projection, and the projection of the air guide device arranged on the pressure cylinder on the horizontal plane of the excavation tunnel is the second projection. The first projection and the second projection are directly opposite in the horizontal width direction of the excavation tunnel.

[0013] Furthermore, the air guiding device arranged on the exhaust cylinder and the air guiding device arranged on the air pressure cylinder are located at the same height in the excavation tunnel.

[0014] Furthermore, the multiple air outlets of the air guide device arranged on the exhaust cylinder guide the airflow in parallel directions in pairs, and the multiple air outlets of the air guide device arranged on the pressure cylinder guide the airflow in parallel directions in pairs.

[0015] By applying the technical solution of the present invention, a tunneling surface dust control device is provided. The tunneling surface dust control device is applied to a tunneling tunnel, in which a tunneling machine is arranged. The tunneling surface dust control device comprises a compressed air cylinder arranged on one side of the tunneling tunnel in the width direction and an exhaust air cylinder arranged on the other side of the tunneling tunnel in the width direction. The compressed air cylinder and the exhaust air cylinder extend along the length direction of the tunneling tunnel. The tunneling surface dust control device also comprises an air guide device respectively arranged on the exhaust air cylinder and the compressed air cylinder; the air guide device is located on one side of the tunneling tunnel in the width direction and has a plurality of air outlets arranged in multiple layers with the opening direction facing the other side, and the angle between the guiding direction of the air outlet to the airflow and the radial plane of the tunneling tunnel is adjustable; wherein, the airflow flowing through the plurality of air outlets of the air guide device arranged on the exhaust air cylinder forms a plurality of negative pressure zones in correspondence, and the airflow flowing through the plurality of air outlets of the air guide device arranged on the compressed air cylinder forms a plurality of compressed air dust control wind curtains in correspondence, and at least one negative pressure zone corresponds to at least one compressed air dust control wind curtain.

[0016] By adopting this scheme, the airflow discharged from the compressed air cylinder is guided and layered through the multiple air outlets of the air guide device arranged on the compressed air cylinder. The discharged airflow is blown out in layers through the multiple air outlets of the air guide device arranged on the compressed air cylinder to form a multi-layer compressed air dust control air curtain, thereby improving the effective coverage range of the compressed air dust control air curtain and the compressed air dust control effect. Furthermore, a plurality of negative pressure zones are formed in the bottom area of ​​the tunneling tunnel through the multiple air outlets of the air guide device arranged on the exhaust pipe, so as to realize the downward adsorption and diversion of the compressed air flow in the tunneling tunnel, which is beneficial to improving the formation efficiency of the compressed air dust control curtain, and avoiding the situation that the compressed air dust control curtain in the tunneling tunnel is relatively stable on the side where it is formed, but due to the dispersion effect of the wind flow, the compressed air dust control curtain formed on the other side of the tunneling tunnel opposite to the compressed air flow discharge side is weak and unstable, thereby improving the reliability and stability of the formed compressed air dust control curtain covering the entire cross-section of the tunneling tunnel, reducing or even avoiding the situation where there is no compressed air dust control curtain area in the tunneling tunnel, and improving the full-section dust barrier effect and control effect of the dust control device on the tunneling surface. On the other hand, the angle between the guiding direction of the airflow by the air outlet and the radial plane of the excavation tunnel is adjustable, so as to ensure the generation of a full-section compressed air dust control curtain in the excavation tunnel, to ensure the effective control and efficient removal of dust, and at the same time to facilitate the adjustment of the compressed air range and compressed air angle of the compressed air dust control curtain according to actual conditions, so that it can effectively capture the dust generated in the comprehensive excavation operation, and is conducive to improving the applicability of the dust control device on the excavation surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] 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:

[0018] Figure 1A schematic diagram showing the application of the excavation face dust control device provided by an embodiment of the present invention is shown;

[0019] Figure 2 Shows Figure 1 A schematic diagram of the structure of the air guide device of the excavation face dust control device;

[0020] Figure 3 Shows Figure 1 A schematic diagram of the structure of the adjustment component of the air guide device.

[0021] The above drawings include the following reference numerals:

[0022] 1. Dust control device for excavation surface;

[0023] 10. air guide device; 101. air outlet; 11. air storage device; 111. swing slot; 12. adjustment component; 121. control host; 1211. infrared sensor; 1212. display screen; 122. swing rod; 123. mounting plate; 1241. adapter terminal; 13. air guide plate; 14. flow adjustment member;

[0024] 20. Air compressor;

[0025] 30. Exhaust fan;

[0026] 40. Exhaust fan;

[0027] 2. Roadheader;

[0028] 3. Dig tunnels. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than 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.

[0030] like Figures 1 to 3As shown, an embodiment of the present invention provides a driving face dust control device 1, which is applied to a driving tunnel 3, in which a driving machine 2 is arranged, and the driving face dust control device 1 includes a compressed air cylinder 20 arranged on one side of the driving tunnel 3 in the width direction and an exhaust cylinder 30 arranged on the other side of the driving tunnel 3 in the width direction, the compressed air cylinder 20 and the exhaust cylinder 30 extend along the length direction of the driving tunnel 3, and the driving face dust control device 1 also includes an air guide device 10 respectively arranged on the exhaust cylinder 30 and the compressed air cylinder 20; the air guide device The wind device 10 is located on one side in the width direction of the excavation tunnel 3 and has a plurality of air outlets 101 arranged in multiple layers with their openings facing the other side. The angle between the guiding direction of the wind flow by the air outlets 101 and the radial plane of the excavation tunnel 3 is adjustable; wherein, the wind flow flowing through the plurality of air outlets 101 of the wind guide device 10 arranged on the exhaust cylinder 30 forms a plurality of layers of negative pressure areas correspondingly, and the wind flow flowing through the plurality of air outlets 101 of the wind guide device 10 arranged on the compressed air cylinder 20 forms a plurality of layers of compressed air dust control curtains correspondingly, and at least one negative pressure area corresponds to at least one compressed air dust control curtain.

[0031] In this embodiment, the airflow discharged from the compressed air cylinder 20 is guided and layered by multiple air outlets 101 of the air guide device 10 arranged on the compressed air cylinder 20. The discharged airflow is blown out in layers through the multiple air outlets 101 of the air guide device 10 arranged on the compressed air cylinder 20 to form a multi-layer compressed air dust control air curtain, thereby improving the effective coverage range of the compressed air dust control air curtain and the compressed air dust control effect. Furthermore, a plurality of air outlets 101 of the air guide device 10 arranged on the exhaust cylinder 30 form a multi-layer negative pressure zone in the bottom area of ​​the excavation tunnel 3 to achieve downward adsorption and diversion of the compressed air flow in the excavation tunnel 3, which is beneficial to improving the formation efficiency of the compressed air dust control curtain, and avoiding the situation that the compressed air dust control curtain in the excavation tunnel 3 is relatively stable on the side where it is formed, but due to the dispersion effect of the wind flow, the compressed air dust control curtain formed in the other side of the excavation tunnel 3 opposite to the compressed air flow discharge side is weak and unstable, thereby improving the reliability and stability of the formed compressed air dust control curtain covering the entire cross-section of the excavation tunnel 3, reducing or even avoiding the situation where there is no compressed air dust control curtain area in the excavation tunnel 3, and improving the full-section barrier effect and control effect of the excavation surface dust control device 1 on dust. On the other hand, the angle between the guiding direction of the air flow of the air outlet 101 and the radial plane of the excavation tunnel 3 is adjustable, so as to ensure that a full-section compressed air dust control wind curtain is generated in the excavation tunnel 3, to ensure effective control and efficient removal of dust, and at the same time, it is convenient to adjust the compressed air range and compressed air angle of the compressed air dust control wind curtain according to actual conditions, so that it can effectively capture the dust generated in the comprehensive excavation operation, and is conducive to improving the applicability of the excavation surface dust control device 1.

[0032] Preferably, the excavation face dust control device 1 further includes an exhaust fan 40, which is connected to the exhaust cylinder 30 to form an exhaust air flow.

[0033] like Figure 2 As shown, the air guide device 10 includes an air storage device 11, an adjustment component 12 and a plurality of air guide plates 13. The air storage device 11 is arranged on the compressed air cylinder 20 or the exhaust air cylinder 30 and has a mounting opening. The plurality of air guide plates 13 are arranged in the mounting opening through the adjustment component 12 and are arranged two by two along the extension direction of the compressed air cylinder 20. The area between any two adjacent air guide plates 13 forms an air outlet 101. The adjustment component 12 is used to drive the plurality of air guide plates 13 to rotate synchronously. Such an arrangement facilitates the formation of a plurality of air outlets 101 and facilitates the synchronous adjustment of the air guide directions of the plurality of air outlets 101 on the air storage device 11, thereby ensuring the reliability and stability of the formation of the compressed air dust control air curtain. Specifically, in the present embodiment, the mounting opening of the air storage device 11 arranged on the compressed air cylinder 20 or the exhaust air cylinder 30 is located on one side of the compressed air cylinder 20 in the radial direction, and the plurality of air guide plates 13 are vertically arranged in the mounting opening.

[0034] like Figure 2 and Figure 3 As shown, the adjustment component 12 includes a control host 121, a swing rod 122, a mounting plate 123 and a transmission component. The mounting plate 123 is arranged in the top area of ​​the mounting port. The transmission component is arranged in the mounting plate 123 and has a plurality of adapter ends 1241 protruding from the bottom of the mounting plate 123 and rotatable. The control host 121 is arranged on the air storage container 11. The air storage container 11 has a swing groove 111. The swing rod 122 is swingably inserted into the swing groove 111 and the two ends are respectively connected to the control host 121 and the transmission component in the mounting plate 123, so that the swing of the swing rod 122 drives the plurality of adapter ends 1241 to rotate. A plurality of air guide plates 13 are arranged at intervals at the mounting port, and an air guide plate 13 is fixedly connected under any one of the adapter ends 1241.

[0035] The mounting plate 123 in this embodiment is fixedly mounted in the top area of ​​the mounting port, and it will not rotate or move. When the angle of the air outlet 101 needs to be adjusted, the operator only needs to control the swing rod 122 to rotate through the control host 121, and the transmission assembly can be used to drive multiple air guide plates 13 to rotate synchronously in the mounting port and adjust the diversion angle of the air outlet 101, thereby ensuring the synchronization and accuracy, thereby ensuring that the dust in the excavation tunnel 3 can always be effectively controlled, reducing the impact of dust on equipment and the environment, and improving the excavation efficiency and environmental protection level. At the same time, this also realizes the semi-automatic adjustment of the angle of the compressed air dust control wind curtain, reduces manual intervention, and reduces the difficulty of operation. It is particularly suitable for continuous excavation operations that require frequent adjustment of the angle of the compressed air dust control wind curtain, which is conducive to reducing labor intensity and improving the safety of operations.

[0036] Preferably, the transmission assembly includes a driving gear, a transmission chain and multiple transmission gears. The driving gear is drivingly connected to the multiple transmission gears through the transmission chain. The swing rod 122 is drivingly connected to the driving gear. The driving gear and the multiple transmission gears are spaced apart in pairs. The driving gear and any one of the multiple transmission gears have a rotating shaft protruding from the bottom of the mounting plate 123, and the end of a rotating shaft corresponds to forming a transfer end 1241.

[0037] In this embodiment, the position of the driving gear and the positions of the multiple transmission gears remain unchanged. The driving gear is connected to one end of the swing rod 122 protruding from the swing groove 111 through an adapter shaft. The control host 121 is drivingly connected to one end of the swing rod 122 located in the swing groove 111 and causes the swing rod 122 to swing around the adapter shaft between it and the driving gear. When the swing rod 122 swings, it drives the driving gear to rotate, and the driving gear drives the transmission chain to rotate and drives multiple transmission gears to rotate synchronously, thereby driving the wind guide plate 13 connected to the driving gear and each transmission gear to rotate synchronously. This embodiment adopts a transmission method of gears and chains, which not only improves the stability and efficiency of the transmission, ensures the synchronous rotation of multiple wind guide plates 13, but also is easy to maintain, and is suitable for precision excavation operations that require high-precision angle adjustment of the air curtain for compressed air and dust control.

[0038] It is understandable that the transmission assembly is not limited to the above embodiments, which are not listed one by one here.

[0039] like Figure 3 As shown, at least one control host 121 of the air guide device 10 has an infrared sensor 1211 and a display screen 1212. The infrared sensor 1211 is used to monitor the dust concentration in the excavation tunnel 3, and the display screen 1212 is used to display the monitoring status of the infrared sensor 1211. In this way, the infrared sensor 1211 and the display screen 1212 monitor and display the dust concentration in real time, so that the staff can quickly understand the dust status of the working environment, adjust the wind curtain angle and air volume in time, and ensure the safety of the work.

[0040] It is understandable that the dust concentration monitoring is not limited to the infrared sensor 1211. Preferably, the control host 121 of each air guide device 10 in this embodiment has an infrared sensor 1211 and a display screen 1212 to ensure the comprehensiveness of the monitoring.

[0041] Preferably, the cross-sectional area of ​​the air storage 11 in the direction of the wind flow passing through the inside thereof increases first and then decreases.

[0042] In this embodiment, the dynamic change of the cross-sectional area of ​​the air storage 11 can effectively adjust the speed and pressure distribution of the airflow derived from the air outlet 101, which is conducive to forming a more uniform and wider coverage compressed air dust control curtain. At the same time, it can also increase the area of ​​the installation port and thus increase the area of ​​multiple air outlets 101, thereby enhancing the coverage and control effect of the compressed air dust control curtain. This arrangement can ensure the formation of a continuous dust control area (compressed air dust control curtain) on a longer excavation tunnel 3, prevent dust from spreading over a large area in the excavation tunnel 3, and also help reduce energy consumption and improve the economy of dust control.

[0043] like Figure 2 As shown, the air guiding device 10 further includes a flow regulating member 14 , which is disposed at the outlet of the air storage device 11 . The area of ​​the outlet blocked by the flow regulating member 14 is adjustable to adjust the air intake or air outlet of the air storage device 11 .

[0044] In this embodiment, the compressed air cylinder 20 has radial air outlets and axial air outlets, and the exhaust cylinder 30 has radial air outlets and axial air outlets. The axial air outlet of the exhaust cylinder 30 and the axial air outlet of the compressed air cylinder 20 are respectively located on the front and rear sides of the tunnel boring machine 2. The multiple air outlets 101 of the air guide device 10 arranged on the compressed air cylinder 20 are the radial air outlets of the compressed air cylinder 20, and the multiple air outlets 101 of the air guide device 10 arranged on the exhaust cylinder 30 are the radial air outlets of the exhaust cylinder 30. The flow regulating member 14 is used to adjust the air outlet ratio between the radial air outlet and the axial air outlet (the fluid flow rate flowing through the compressed air cylinder 20 or the exhaust air cylinder 30 is constant, and as the blocking area of ​​the outlet of the air storage device 11 increases, the amount of fluid flowing out of the axial air outlet becomes smaller and the amount of fluid flowing out of the radial air outlet becomes larger, and vice versa), so as to adjust the strength of the compressed air dust control air curtain according to actual conditions, so that the excavation surface dust control device 1 can flexibly adjust the air volume and achieve the best dust control effect according to the different stages of the excavation operation and the change of dust concentration, thereby improving the flexibility and adaptability of dust control.

[0045] Specifically, the flow regulating member 14 may be a rotating opening and closing type sealing plate and may be provided with an adjusting knob. By rotating the adjusting knob, the rotating opening and closing type sealing plate may be controlled to achieve adjustment of the outlet sealing area.

[0046] like Figure 1As shown, the projection of the air guide device 10 arranged on the exhaust cylinder 30 on the horizontal plane of the tunnel 3 is the first projection, and the projection of the air guide device 10 arranged on the pressure cylinder 20 on the horizontal plane of the tunnel 3 is the second projection, and the first projection and the second projection are directly opposite in the horizontal width direction of the tunnel 3. This arrangement makes the multi-layer negative pressure area correspond to the multi-layer pressure air dust control wind curtain in the width direction of the tunnel 3, avoiding the situation that only part of the pressure air dust control wind curtain can stably cover the tunnel 3 under the action of the corresponding negative pressure area, which is conducive to improving the overall strength of the multi-layer pressure air dust control wind curtain and improving the dust blocking effect.

[0047] Specifically, the air guide device 10 arranged on the exhaust cylinder 30 and the air guide device 10 arranged on the pressure cylinder 20 are located at the same height in the excavation tunnel 3. Such an arrangement is conducive to ensuring the reinforcing effect of the negative pressure area on the pressure air dust control curtain, avoiding the situation where the negative pressure area is unable to play a suction reinforcing role on the pressure air dust control curtain due to the long distance between the two in height, and is conducive to improving the reliability and stability of reinforcing the pressure air dust control curtain.

[0048] Furthermore, the wind directions of the multiple air outlets 101 of the wind guide device 10 arranged on the exhaust cylinder 30 are parallel to each other, and the wind directions of the multiple air outlets 101 of the wind guide device 10 arranged on the pressure cylinder 20 are parallel to each other. This arrangement avoids interference or excessive dispersion between the winds guided by the multiple air outlets 101 of the same wind guide device 10, which is conducive to ensuring the reliability and stability of the formation of the negative pressure area or the pressure wind dust curtain.

[0049] Preferably, the guiding angles of the wind flow by the multiple air outlets 101 of the wind guide device 10 disposed on the exhaust cylinder 30 are opposite to and the same as the guiding angles of the wind flow by the multiple air outlets 101 of the wind guide device 10 disposed on the air pressure cylinder 20 .

[0050] In summary, an embodiment of the present invention provides a dust control device 1 for an excavation surface, wherein a plurality of air outlets 101 of an air guide device 10 arranged on an exhaust cylinder 30 and a plurality of air outlets 101 of an air guide device 10 arranged on an air pressure cylinder 20 are directly opposite to each other in the width direction of an excavation tunnel 3. When an infrared sensor 1211 of a control host 121 detects that the dust concentration in the excavation tunnel 3 is relatively high, flow regulating members 14 of the air guide devices arranged on the exhaust cylinder 30 and the air pressure cylinder 20 are respectively adjusted to increase the fluid flow (compressed air volume and exhaust air volume) flowing through the air outlet 101, and the swing arm 122 is controlled to move so that the flow direction of the air outlet 101 is toward the exit direction of the excavation tunnel 3. When an infrared sensor 1211 of a control host 121 detects that the dust concentration in the excavation tunnel 3 is relatively low and stable, the flow direction and the flow rate of the air outlet 101 are not adjusted. At this time, the flow direction of the air outlet 101 is parallel to the width direction of the excavation tunnel 3.

[0051] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. 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.

[0052] 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.

[0053] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, numerical expressions and numerical values ​​do not limit the scope of the present invention. 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, method and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely 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 once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0054] In the description of the present invention, it is necessary to understand 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 the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0055] 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.

[0056] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

Claims

1. A dust control device for excavation surface, characterized in that: The excavation surface dust control device is applied to an excavation tunnel (3), wherein an excavation machine (2) is arranged in the excavation tunnel (3), and the excavation surface dust control device comprises a compressed air cylinder (20) arranged on one side of the excavation tunnel (3) in the width direction and an exhaust air cylinder (30) arranged on the other side of the excavation tunnel (3) in the width direction, wherein the compressed air cylinder (20) and the exhaust air cylinder (30) extend along the length direction of the excavation tunnel (3), and the excavation surface dust control device further comprises an air guide device (10) respectively arranged on the exhaust air cylinder (30) and the compressed air cylinder (20); The air guide device (10) is located on one side of the excavation tunnel (3) in the width direction and has a plurality of air outlets (101) arranged in multiple layers with their openings facing the other side, and the angle between the air outlet (101) guiding the airflow and the radial plane of the excavation tunnel (3) is adjustable; The wind flow passing through the multiple air outlets (101) of the air guide device (10) arranged on the exhaust cylinder (30) forms a multi-layer negative pressure zone, and the wind flow passing through the multiple air outlets (101) of the air guide device (10) arranged on the pressure cylinder (20) forms a multi-layer pressure-wind dust control curtain, and at least one of the negative pressure zones corresponds to at least one of the pressure-wind dust control curtains.

2. The excavation face dust control device according to claim 1, characterized in that: The air guide device (10) comprises an air storage device (11), an adjusting component (12) and a plurality of air guide plates (13); the air storage device (11) is arranged on the air pressure cylinder (20) or the air exhaust cylinder (30) and has a mounting opening; the plurality of air guide plates (13) are arranged in the mounting opening through the adjusting component (12) and are arranged in pairs along the extension direction of the air pressure cylinder (20); the area between any two adjacent air guide plates (13) forms an air outlet (101); and the adjusting component (12) is used to drive the plurality of air guide plates (13) to rotate synchronously.

3. The excavation face dust control device according to claim 2, characterized in that: The regulating assembly (12) comprises a control host (121), a swinging rod (122), a mounting plate (123) and a transmission assembly. The mounting plate (123) is arranged at the top area of ​​the mounting opening. The transmission assembly is arranged in the mounting plate (123) and has a plurality of adapter ends (1241) protruding from the bottom of the mounting plate (123) and rotatable. The control host (121) is arranged on the air storage device (11). The air storage device (11) has a swinging groove (111). The swinging rod (122) is swingably inserted into the swinging groove (111) and its two ends are respectively connected to the control host (121) and the transmission assembly in the mounting plate (123) so that the swinging of the swinging rod (122) drives the plurality of adapter ends (1241) to rotate. The plurality of air guide plates (13) are arranged at intervals at the mounting opening. One air guide plate (13) is fixedly connected below any of the adapter ends (1241).

4. The excavation face dust control device according to claim 3, characterized in that: The transmission assembly comprises a driving gear, a transmission chain and a plurality of transmission gears, the driving gear is drivingly connected to the plurality of transmission gears via the transmission chain, the swing rod (122) is drivingly connected to the driving gear, the driving gear and the plurality of transmission gears are spaced apart in pairs, the driving gear and any one of the plurality of transmission gears have a rotating shaft protruding from the bottom of the mounting plate (123), and an end of the rotating shaft corresponds to forming a transfer end (1241).

5. The excavation face dust control device according to claim 3, characterized in that: The control host (121) of at least one of the air guide devices (10) has an infrared sensor (1211) and a display screen (1212), wherein the infrared sensor (1211) is used to monitor the dust concentration in the excavation tunnel (3), and the display screen (1212) is used to display the monitoring status of the infrared sensor (1211).

6. The excavation face dust control device according to claim 3, characterized in that: The cross-sectional area of ​​the air storage device (11) in the direction of the wind flow flowing through the inside thereof first increases and then decreases.

7. The excavation face dust control device according to claim 3, characterized in that: The air guide device (10) further comprises a flow regulating member (14), wherein the flow regulating member (14) is arranged at the outlet of the air storage device (11), and the area of ​​the outlet blocked by the flow regulating member (14) is adjustable so as to adjust the air intake or air outlet of the air storage device (11).

8. The excavation face dust control device according to claim 1, characterized in that: The projection of the air guide device (10) arranged on the exhaust cylinder (30) on the horizontal plane of the excavation tunnel (3) is a first projection, and the projection of the air guide device (10) arranged on the air pressure cylinder (20) on the horizontal plane of the excavation tunnel (3) is a second projection, and the first projection and the second projection are directly opposite in the width direction of the horizontal plane of the excavation tunnel (3).

9. The excavation face dust control device according to claim 1, characterized in that: The air guide device (10) arranged on the exhaust cylinder (30) and the air guide device (10) arranged on the air pressure cylinder (20) are located at the same height in the excavation tunnel (3).

10. The excavation face dust control device according to claim 9, characterized in that: The multiple air outlets (101) of the air guide device (10) arranged on the exhaust cylinder (30) guide the airflow in parallel directions in pairs, and the multiple air outlets (101) of the air guide device (10) arranged on the air pressure cylinder (20) guide the airflow in parallel directions in pairs.

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