Vortex dust control device

Abstract

The invention provides a vortex dust control device which comprises an air inlet barrel, a wind direction converter and a plurality of vortex air barrels, one end of the air inlet barrel is used for being connected with a press-in type air barrel in a fully mechanized excavation face, and the other end of the air inlet barrel is connected with one end of the wind direction converter. The wind direction converter is used for changing axial air flow entering the air inlet barrel into rotating air flow with radial speed, the multiple vortex air barrels are sequentially connected, and one of the multiple vortex air barrels is connected with the other end of the wind direction converter; wherein the side wall of the vortex air duct is provided with an axial air outlet penetrating in the axial direction, the vortex dust control device further comprises an adjusting part arranged on the vortex air duct, and the adjusting part is used for adjusting the opening width of the axial air outlet in the circumferential direction of the vortex air duct. By the adoption of the scheme, the problems that in the prior art, an air outlet of a vortex dust control device is single in adjustment angle, the opening and closing range is small, and a more flexible and applicable rotary air curtain cover cannot be formed can be solved.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel dust removal, and in particular to an eddy current dust control device. Background Art

[0002] With the increasing degree of mechanization in coal mines, the dust pollution problem in the comprehensive excavation working face is becoming more and more serious, which not only affects the vision of operators, but also brings serious hidden dangers to the safe production of the comprehensive excavation working face.

[0003] The existing vortex dust control device can form a rotating air curtain cover at the head of the working face, and the dust-laden airflow returning from the excavation working face is surrounded by the rotating air hood, so that the dust is controlled within a small area. However, the air outlet adjustment angle of the existing vortex dust control device is single, and the opening and closing range is small, which cannot form a more flexible and applicable rotating air curtain cover. Summary of the invention

[0004] The invention provides a vortex dust control device to solve the problem that the air outlet of the vortex dust control device in the prior art has a single adjustment angle and a small opening and closing range.

[0005] The present invention provides a vortex dust control device, comprising an air inlet tube, a wind direction converter and a plurality of vortex air tubes, wherein one end of the air inlet tube is used to be connected to a push-in air tube in a comprehensive excavation working face, and the other end of the air inlet tube is connected to one end of the wind direction converter, and the wind direction converter is used to change the axial airflow entering the air inlet tube into a rotating airflow with a radial velocity, and the plurality of vortex air tubes are connected in sequence, and one of the plurality of vortex air tubes is connected to the other end of the wind direction converter; wherein the side wall of the vortex air tube has an axial air outlet arranged along the axial direction, and the vortex dust control device also includes an adjusting portion arranged on the vortex air tube, and the adjusting portion is used to adjust the opening width of the axial air outlet in the circumferential direction of the vortex air tube.

[0006] Furthermore, the adjustment part includes an adjustment baffle, which extends along the axial air outlet and is movably arranged. The adjustment baffle changes the shielding area of ​​the axial air outlet by changing its position to adjust the opening width of the axial air outlet.

[0007] Furthermore, the adjustment part also includes a rotating shaft, which is rotatably arranged on the vortex air cylinder, and the rotating shaft extends along the axial air outlet. The adjusting baffle is fixedly connected to the rotating shaft on one side in the width direction. When the rotating shaft rotates, it drives the adjusting baffle to swing to adjust the opening width of the axial air outlet.

[0008] Furthermore, the adjustment part also includes a driving motor and a reducer. The driving motor is fixed to the side wall of the vortex wind tube. The output end of the driving motor is connected to the input end of the reducer. The output end of the reducer is provided with a driving gear, and a driven gear is provided on the rotating shaft. The driving gear and the driven gear are meshed to drive the rotating shaft to rotate.

[0009] Furthermore, there are two rotating shafts, which are respectively arranged on both sides of the axial air outlet in the width direction, and there are two adjusting baffles, which are respectively arranged on the two rotating shafts; when the two adjusting baffles swing, the sides of the two adjusting baffles away from the rotating shafts approach or move away from each other.

[0010] Furthermore, the adjusting baffle is an arc-shaped plate bent along the circumference of the vortex air duct, and the adjusting part also includes a limiter fixed to the vortex air duct, the limiter has an arc-shaped groove, one end of the adjusting baffle is slidably matched with the arc-shaped groove, and the adjusting baffle adjusts the opening width of the axial air outlet by moving along the circumference of the vortex air duct.

[0011] Furthermore, the multiple vortex wind ducts include a front-section vortex wind duct and a rear-section vortex wind duct, one end of the front-section vortex wind duct is connected to the wind direction converter, the other end of the front-section vortex wind duct is connected to the rear-section vortex wind duct, the axial air outlet of the front-section vortex wind duct is connected to the axial air outlet of the rear-section vortex wind duct, and the front-section vortex wind duct and the rear-section vortex wind duct are respectively provided with adjustment parts, and different adjustment parts are controlled separately.

[0012] Furthermore, the inner diameter of the front section vortex air cylinder is larger than the inner diameter of the rear section vortex air cylinder, and the length of the front section vortex air cylinder is smaller than the length of the rear section vortex air cylinder.

[0013] Furthermore, the length of the front section vortex air duct is 2.5m to 4m, and the opening width of the axial air outlet of the front section vortex air duct is 0.04m to 0.06m; the length of the rear section vortex air duct is 5m to 7m, and the opening width of the axial air outlet of the rear section vortex air duct is 0.02m to 0.04m.

[0014] Furthermore, the wind direction converter includes a cylindrical shell, a rotating hub and a plurality of blades. The two ends of the cylindrical shell are respectively connected to the air inlet tube and the vortex air tube. The rotating hub is rotatably arranged in the cylindrical shell. The rotating hub is a frustum-shaped structure. The end of the rotating hub with a smaller diameter faces the air inlet tube, and the end of the rotating hub with a larger diameter faces the vortex air tube. The plurality of blades are distributed on the outer wall of the rotating hub along the circumference of the rotating hub.

[0015] By applying the technical solution of the present invention, the vortex dust control device includes an air inlet, a wind direction converter and a plurality of vortex air ducts. One end of the air inlet is directly connected to the push-in air duct of the comprehensive excavation working face, and the other end is closely connected to one end of the wind direction converter. The other end of the wind direction converter is connected to one of the vortex air ducts, and the air inlet, the wind direction converter and the plurality of vortex air ducts are all on the same center line. Among them, the function of the air inlet is to receive the axial airflow from the push-in air duct, and provide a stable airflow source for subsequent wind direction conversion and vortex generation. The wind direction converter can change the axial airflow entering from the air inlet into a rotating airflow with radial velocity, which increases the diffusion capacity of the airflow and the ability to absorb dust. Multiple vortex air ducts are connected in sequence to form a continuous airflow channel, and one end of one of the vortex air ducts is connected to the wind direction converter to ensure the continuity and stability of the rotating airflow. Each vortex air duct has an axial air outlet arranged along the axial direction on the side wall, and the rotating airflow can be blown out from the axial air outlet to form a dust control wind curtain. The adjustment part is used to adjust the opening width of the axial air outlet in the circumferential direction of the vortex wind tube, so as to control the speed and diffusion range of the air outlet. At the same time, it can also change the circumferential width of the axial air outlet, thereby affecting the shape and intensity of the cyclone, and realizing effective control of the dust flow. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] 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:

[0017] Figure 1 A schematic structural diagram of an eddy current dust control device provided by an embodiment of the present invention is shown;

[0018] Figure 2 Shows Figure 1 Section view at AA;

[0019] Figure 3 A partial cross-sectional view of a wind direction changer is shown.

[0020] The above drawings include the following reference numerals:

[0021] 10. Air inlet;

[0022] 20. Wind direction converter; 21. Cylindrical housing; 22. Rotating hub; 23. Blades;

[0023] 31. Front vortex air duct;

[0024] 32. Rear vortex air duct;

[0025] 40. Axial air outlet;

[0026] 50. Adjustment Department;

[0027] 51. Adjust the baffle;

[0028] 52. Rotating shaft;

[0029] 01. Push-in air duct. DETAILED DESCRIPTION

[0030] 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.

[0031] like Figure 1 and Figure 2 As shown, the present invention provides a vortex dust control device, including an air inlet cylinder 10, a wind direction converter 20 and a plurality of vortex air cylinders, one end of the air inlet cylinder 10 is used to be connected to a push-in air cylinder 01 in a comprehensive excavation working face, and the other end of the air inlet cylinder 10 is connected to one end of the wind direction converter 20, and the wind direction converter 20 is used to change the axial airflow entering the air inlet cylinder 10 into a rotating airflow with a radial velocity, and the plurality of vortex air cylinders are connected in sequence, and one of the plurality of vortex air cylinders is connected to the other end of the wind direction converter 20; wherein, the side wall of the vortex air cylinder has an axial air outlet 40 arranged along the axial direction, and the vortex dust control device also includes an adjusting portion 50 arranged on the vortex air cylinder, and the adjusting portion 50 is used to adjust the opening width of the axial air outlet 40 in the circumferential direction of the vortex air cylinder.

[0032] By applying the technical solution of the present invention, the vortex dust control device includes an air inlet 10, a wind direction converter 20 and a plurality of vortex air ducts. One end of the air inlet 10 is directly connected to the push-in air duct 01 of the comprehensive excavation working face, and the other end is closely connected to one end of the wind direction converter 20. The other end of the wind direction converter 20 is connected to one of the vortex air ducts, and the air inlet 10, the wind direction converter 20 and the plurality of vortex air ducts are all on the same center line. Among them, the function of the air inlet 10 is to receive the axial airflow from the push-in air duct 01, and provide a stable airflow source for subsequent wind direction conversion and vortex generation. The wind direction converter 20 can change the axial airflow entering from the air inlet 10 into a rotating airflow with radial velocity, which increases the diffusion capacity of the airflow and the ability to suck dust. Multiple vortex air ducts are connected in sequence to form a continuous airflow channel, and one end of one of the vortex air ducts is connected to the wind direction converter 20 to ensure the continuity and stability of the rotating airflow. Each vortex air cylinder has an axial air outlet 40 extending through the side wall thereof in the axial direction, and a swirling airflow can be blown out from the axial air outlet 40 to form a dust control air curtain. The adjusting portion 50 is used to adjust the opening width of the axial air outlet 40 in the circumferential direction of the vortex air cylinder, thereby controlling the speed and diffusion range of the air outlet, and can also change the circumferential width of the axial air outlet 40, thereby affecting the shape and strength of the cyclone, and realizing effective control of the dust flow.

[0033] Further, the adjustment portion 50 includes an adjustment baffle 51, which extends along the axial air outlet 40 and is movably arranged. The adjustment baffle 51 changes the shielding area of ​​the axial air outlet 40 by changing its position to adjust the opening width of the axial air outlet 40. In this embodiment, the adjustment baffle 51 is in an elongated strip shape and can be rotatably arranged on both sides of the width direction of the axial air outlet 40, and is specifically selected according to actual needs and the diameter of the vortex air duct.

[0034] Furthermore, the adjustment part 50 also includes a rotating shaft 52, which is rotatably disposed in the vortex air cylinder, and the rotating shaft 52 extends along the axial air outlet 40. The adjusting baffle 51 is fixedly connected to the rotating shaft 52 on one side in the width direction. When the rotating shaft 52 rotates, it drives the adjusting baffle 51 to swing to adjust the opening width of the axial air outlet 40. In this embodiment, the adjustment part 50 includes a rotating shaft 52, which is rotatably disposed inside the vortex air cylinder and extends along the axial air outlet 40. The rotating shafts 52 are symmetrically distributed in the vortex air cylinder to ensure the balance and stability of the adjusting baffle 51 connected thereto during adjustment.

[0035] Specifically, when the shaft 52 rotates under motor or manual operation, the adjustment baffle 51 will swing accordingly, and the swing range and angle of the adjustment baffle 51 change according to the rotation angle of the shaft 52, so that the opening width and coverage range of the axial air outlet 40 can be accurately adjusted.

[0036] Furthermore, the regulating part 50 also includes a driving motor and a reducer. The driving motor is fixed to the side wall of the vortex wind tube. The output end of the driving motor is connected to the input end of the reducer. The output end of the reducer is provided with a driving gear. The rotating shaft 52 is provided with a driven gear. The driving gear and the driven gear are meshed to drive the rotating shaft 52 to rotate.

[0037] In this embodiment, the adjustment part 50 includes a driving motor and a reducer. The driving motor is arranged on the side wall of the vortex duct, and the output end of the driving motor is connected to the input end of the reducer. The use of the reducer can reduce the speed of the motor and increase the torque, thereby more smoothly and effectively controlling the rotation of the rotating shaft 52. The output end of the reducer is equipped with a driving gear, which is meshed with a driven gear, and the driven gear is fixed on the rotating shaft 52. Through the gear transmission, the rotation of the driving gear can accurately drive the rotating shaft 52, and then control the opening and closing of the adjustment baffle 51 installed on the rotating shaft 52, so as to adjust the gap of the longitudinal air outlet of the vortex duct and achieve the dynamic balance of the whole device.

[0038] Furthermore, there are two rotating shafts 52, which are respectively arranged on both sides of the axial air outlet 40 in the width direction, and there are two adjusting baffles 51, which are respectively arranged on the two rotating shafts 52; when the two adjusting baffles 51 swing, the sides of the two adjusting baffles 51 away from the rotating shafts 52 approach or move away from each other.

[0039] Furthermore, the rotating shaft 52 can automatically adjust the rotation angle of the rotating shaft 52 according to the working frequency of the vortex wind tube and the information fed back by the real-time wind speed sensor in the lane. When the system detects that the fan frequency is high, or the wind speed in the lane is uneven, the drive motor will adjust the rotating shaft 52 so that the two adjustment baffles 51 on the side away from the rotating shaft 52 are close to each other, reducing the width of the axial air outlet 40, thereby increasing the wind speed and wind pressure of the wind, making the wind more concentrated and improving the dust control efficiency. Conversely, when the system detects that the fan frequency is low, or the wind speed in the lane is relatively uniform, the drive motor will adjust the rotating shaft 52 so that the two adjustment baffles 51 on the side away from the rotating shaft 52 are away from each other, increasing the width of the axial air outlet 40, thereby reducing the wind speed and wind pressure of the wind, so as to adapt to different working conditions and maintain the dust control effect.

[0040] In an embodiment not shown in the figure, the adjusting baffle 51 is an arc-shaped plate bent along the circumference of the vortex air duct, and the adjusting part 50 also includes a limit member fixed to the vortex air duct, and the limit member has an arc-shaped groove. One end of the adjusting baffle 51 slides in the arc-shaped groove, and the adjusting baffle 51 adjusts the opening width of the axial air outlet 40 by moving along the circumference of the vortex air duct.

[0041] In this embodiment, the adjustment baffle 51 can be an arc-shaped plate, so that the wind is subjected to less resistance and less wind loss when it is discharged. The adjustment part 50 is also provided with a stopper fixed to the vortex wind tube, and the stopper has a specific arc-shaped groove, which forms a sliding fit with one end of the adjustment baffle 51. The above structure allows the adjustment baffle 51 to move in the circumferential direction of the vortex wind tube, rather than adjusting its position in the axial direction by rotating the shaft 52.

[0042] Furthermore, the multiple vortex wind cylinders include a front-section vortex wind cylinder 31 and a rear-section vortex wind cylinder 32, one end of the front-section vortex wind cylinder 31 is connected to the wind direction converter 20, the other end of the front-section vortex wind cylinder 31 is connected to the rear-section vortex wind cylinder 32, the axial air outlet 40 of the front-section vortex wind cylinder 31 is connected to the axial air outlet 40 of the rear-section vortex wind cylinder 32, and the front-section vortex wind cylinder 31 and the rear-section vortex wind cylinder 32 are respectively provided with adjustment parts 50, and different adjustment parts 50 are controlled separately.

[0043] In this embodiment, the front section vortex wind cylinder 31 has a larger diameter to increase the initial diffusion of air volume and wind speed. One end of the front section vortex wind cylinder 31 is closely connected to the wind direction converter 20 to receive the rotating airflow output from the wind direction converter 20. The axial air outlet 40 of the front section vortex wind cylinder 31 is connected to the axial air outlet 40 of the rear section vortex wind cylinder 32 to ensure the continuity and guidance of the airflow. The diameter of the rear section vortex wind cylinder 32 is smaller than that of the front section to facilitate further focusing and guiding of the airflow and avoid attenuation of the airflow speed. Independent adjustment parts 50 are respectively provided on the front section vortex wind cylinder 31 and the rear section vortex wind cylinder 32, and the width of the axial air outlet 40 of the front section vortex wind cylinder 31 and the rear section vortex wind cylinder 32 can be adjusted according to actual needs.

[0044] Furthermore, the inner diameter of the front vortex wind cylinder 31 is larger than the inner diameter of the rear vortex wind cylinder 32, and the length of the front vortex wind cylinder 31 is smaller than the length of the rear vortex wind cylinder 32. In this embodiment, the inner diameter of the front vortex wind cylinder 31 is larger to provide sufficient space so that the incoming airflow forms a vortex within a wider radial range, thereby generating a stronger suction and mixing ability, which helps to capture and control dust more widely. The length of the front vortex wind cylinder 31 is relatively small, which can ensure that the airflow has formed a relatively stable and uniform rotating airflow structure before entering the rear vortex wind cylinder. The inner diameter of the rear vortex wind cylinder 32 is relatively small, which helps to reduce wind resistance and enable the airflow to pass more efficiently and smoothly during the rotation process. At the same time, due to the long length of the rear vortex wind cylinder 32, there is enough space and time to slow down the attenuation of wind force and keep it within a certain range, avoiding the reduction of dust control efficiency caused by the rapid decline of wind force.

[0045] Furthermore, the length of the front section vortex wind tube 31 is 2.5m to 4m, and the opening width of the axial air outlet 40 of the front section vortex wind tube 31 is 0.04m to 0.06m; the length of the rear section vortex wind tube 32 is 5m to 7m, and the opening width of the axial air outlet 40 of the rear section vortex wind tube 32 is 0.02m to 0.04m.

[0046] In this embodiment, the length of the front section vortex wind cylinder 31 is designed to be 2.5 meters to 4 meters. The length is selected based on the need for the front section vortex wind cylinder 31 to receive the rotating airflow from the wind direction converter 20 and quickly diffuse and stabilize the airflow within a short distance to form a uniform radial jet, thereby effectively controlling the dust in the front section area. The opening width of the axial air outlet 40 of the front section vortex wind cylinder 31 is 0.04 meters to 0.06 meters, which can ensure that the rotating airflow is discharged from the wind cylinder evenly and stably, avoiding excessive concentration or insufficient diffusion of the airflow, which affects the capture and control of dust particles. The length of the rear section vortex wind cylinder 32 is designed to be 5 meters to 7 meters. Compared with the front section vortex wind cylinder 31, the length of the rear section wind cylinder is longer, the purpose is to further optimize the distribution of the airflow in the tunnel, and at the same time use a longer path to attenuate the rotation speed of the airflow, so that the airflow covers the entire tunnel section more evenly. The opening width of the axial air outlet 40 of the rear vortex wind tube 32 is 0.02 meters to 0.04 meters, which can produce a more focused and moderately fast cyclone in the rear area of ​​the tunnel, effectively capturing the dust that the front vortex wind tube 31 cannot control, while avoiding excessive airflow impacting the tunnel wall and causing secondary dust.

[0047] like Figure 3 As shown, the wind direction converter 20 includes a cylindrical shell 21, a rotating hub 22 and a plurality of blades 23. The two ends of the cylindrical shell 21 are respectively connected to the air inlet cylinder 10 and the vortex wind cylinder. The rotating hub 22 is rotatably arranged in the cylindrical shell 21. The rotating hub 22 is a frustum-shaped structure. The end of the rotating hub 22 with a smaller diameter faces the air inlet cylinder 10, and the end of the rotating hub 22 with a larger diameter faces the vortex wind cylinder. The plurality of blades 23 are distributed on the outer wall of the rotating hub 22 along the circumference of the rotating hub 22.

[0048] In this embodiment, the wind direction converter 20 is composed of a cylindrical shell 21, a rotating hub 22 and a plurality of blades 23. The cylindrical shell 21 is cylindrical, and its two ends are respectively connected to the air inlet 10 and the vortex duct. The rotating hub 22 is a frustum, and this structure can guide the airflow to convert from axial to radial, while increasing the rotation speed of the airflow. The end of the rotating hub 22 with a small diameter faces the air inlet 10, which is convenient for the smooth entry of the axial airflow, and the end with a large diameter faces the vortex duct to ensure that the rotating airflow can smoothly transition into the vortex duct. A plurality of blades 23 are evenly distributed on the outer wall of the rotating hub 22, forming a circumferential array around the rotating hub 22. The shape of the blade 23 is usually an airfoil, which can be a straight blade 23 or a curved blade 23. The specific shape needs to be optimized and designed according to the principles of airflow dynamics to maximize the airflow rotation speed and reduce the airflow resistance.

[0049] Specifically, when the axial airflow enters the wind direction converter 20 through the air inlet 10, the airflow first contacts the end with a smaller diameter of the rotating hub 22. At this time, the rotating hub 22 rotates at a high speed under the action of the motor, and its frustum-shaped structure guides the airflow to the end with a larger diameter. At the same time, the airflow is caused to rotate under the action of the blades 23, and finally a rotating airflow with a radial velocity is formed. The rotating airflow then enters the vortex air cylinder and begins its dust control process in the lane.

[0050] 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.

[0051] 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.

[0052] 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.

[0053] 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.

[0054] 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.

[0055] 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 vortex dust control device, characterized in that: It comprises an air inlet cylinder (10), a wind direction converter (20) and a plurality of vortex air cylinders, wherein one end of the air inlet cylinder (10) is used to be connected to a push-in air cylinder (01) in a comprehensive excavation working face, and the other end of the air inlet cylinder (10) is connected to one end of the wind direction converter (20), and the wind direction converter (20) is used to change the axial airflow entering the air inlet cylinder (10) into a rotating airflow with a radial velocity, and the plurality of vortex air cylinders are connected in sequence, and one of the plurality of vortex air cylinders is connected to the other end of the wind direction converter (20); wherein the side wall of the vortex air cylinder has an axial air outlet (40) which is arranged to penetrate along the axial direction, and the vortex dust control device also comprises an adjusting portion (50) arranged on the vortex air cylinder, and the adjusting portion (50) is used to adjust the opening width of the axial air outlet (40) in the circumferential direction of the vortex air cylinder.

2. The eddy current dust control device according to claim 1, characterized in that: The adjustment portion (50) comprises an adjustment baffle (51), the adjustment baffle (51) extending along the axial air outlet (40), the adjustment baffle (51) being movably arranged, and the adjustment baffle (51) changing the shielding area of ​​the axial air outlet (40) by changing the position, so as to adjust the opening width of the axial air outlet (40).

3. The eddy current dust control device according to claim 2, characterized in that: The adjusting portion (50) further comprises a rotating shaft (52), wherein the rotating shaft (52) is rotatably disposed on the vortex air cylinder, the rotating shaft (52) extends along the axial air outlet (40), and the adjusting baffle (51) is fixedly connected to the rotating shaft (52) on one side in the width direction, and the rotating shaft (52) drives the adjusting baffle (51) to swing when rotating, so as to adjust the opening width of the axial air outlet (40).

4. The eddy current dust control device according to claim 3, characterized in that: The regulating part (50) further comprises a driving motor and a reducer. The driving motor is fixed to the side wall of the vortex wind tube. The output end of the driving motor is connected to the input end of the reducer. The output end of the reducer is provided with a driving gear. The rotating shaft (52) is provided with a driven gear. The driving gear and the driven gear are meshed to drive the rotating shaft (52) to rotate.

5. The eddy current dust control device according to claim 3, characterized in that: There are two rotating shafts (52), and the two rotating shafts (52) are respectively arranged on both sides of the axial air outlet (40) in the width direction; there are two adjusting baffles (51), and the two baffles are respectively arranged correspondingly on the two rotating shafts (52); when the two adjusting baffles (51) are swinging, the sides of the two adjusting baffles (51) away from the rotating shaft (52) approach or move away from each other.

6. The eddy current dust control device according to claim 2, characterized in that: The adjusting baffle (51) is an arc-shaped plate bent along the circumference of the vortex air duct, and the adjusting portion (50) also includes a limiter fixed to the vortex air duct, the limiter having an arc-shaped groove, one end of the adjusting baffle (51) slidingly cooperates with the arc-shaped groove, and the adjusting baffle (51) adjusts the opening width of the axial air outlet (40) by moving along the circumference of the vortex air duct.

7. The eddy current dust control device according to claim 1, characterized in that: The plurality of vortex wind tubes include a front section vortex wind tube (31) and a rear section vortex wind tube (32); one end of the front section vortex wind tube (31) is connected to the wind direction converter (20); the other end of the front section vortex wind tube (31) is connected to the rear section vortex wind tube (32); the axial air outlet (40) of the front section vortex wind tube (31) is connected to the axial air outlet (40) of the rear section vortex wind tube (32); the front section vortex wind tube (31) and the rear section vortex wind tube (32) are respectively provided with the regulating parts (50); and different regulating parts (50) are controlled separately.

8. The eddy current dust control device according to claim 7, characterized in that: The inner diameter of the front section vortex wind cylinder (31) is greater than the inner diameter of the rear section vortex wind cylinder (32), and the length of the front section vortex wind cylinder (31) is less than the length of the rear section vortex wind cylinder (32).

9. The eddy current dust control device according to claim 8, characterized in that: The length of the front section vortex wind tube (31) is 2.5m to 4m, and the opening width of the axial air outlet (40) of the front section vortex wind tube (31) is 0.04m to 0.06m; the length of the rear section vortex wind tube (32) is 5m to 7m, and the opening width of the axial air outlet (40) of the rear section vortex wind tube (32) is 0.02m to 0.04m.

10. The eddy current dust control device according to claim 1, characterized in that: The wind direction converter (20) comprises a cylindrical outer shell (21), a rotating hub (22) and a plurality of blades (23); the two ends of the cylindrical outer shell (21) are respectively connected to the air inlet cylinder (10) and the vortex wind cylinder; the rotating hub (22) is rotatably arranged in the cylindrical outer shell (21); the rotating hub (22) is a frustum-shaped structure; the end of the rotating hub (22) with a smaller diameter faces the air inlet cylinder (10) and the end of the rotating hub (22) with a larger diameter faces the vortex wind cylinder; and the plurality of blades (23) are distributed on the outer wall of the rotating hub (22) along the circumference of the rotating hub (22).

Images