Novel adjusting air window for underground coal mine

Abstract

The utility model discloses a novel underground coal mine adjusting air window, which belongs to the technical field of mine air windows and comprises a main body frame, a plurality of mounting plates for mounting devices are fixedly connected to the upper end and the lower end of the main body frame, and a roll-up window is fixedly mounted on one side of the main body frame. One side of the roll-up window is fixedly connected with a pull wire used for driving the roll-up window to operate, a stand column is fixedly installed at the center of the main body frame, two sets of rotating frames are rotatably installed in the main body frame and evenly distributed on the two sides of the stand column, an air inlet groove used for ventilation is formed in the main body frame, and the rotating frames are located in the air inlet groove. An adjusting fan is rotationally mounted in an inner cavity of each rotating frame; the driving motor can quickly respond to an instruction of the control terminal to quickly drive the rotating frame to rotate, quick adjustment of the area of the air inlet groove is achieved, and under emergency conditions such as gas accumulation, the ventilation quantity can be increased, accumulated gas can be diluted in time, the gas concentration is effectively reduced, and the safety risk is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of mine air window, specifically a new type of adjusting air window in coal mine. BACKGROUND

[0002] In the coal mine ventilation system, different mining working faces, chamber and other air using places have different air demand. The adjusting air window can accurately adjust the air volume through the air window by changing the opening size of the window, so that the air flow is distributed to each air using place according to the design requirements, ensuring that each operation area has enough fresh air to meet the needs of personnel breathing and production equipment operation, while avoiding the problems of energy waste or insufficient ventilation caused by excessive or insufficient air volume.

[0003] A coal mine adjusting air window control device is disclosed in Chinese patent (publication number CN217107100U). The patent includes a main body assembly, a motion assembly, a display assembly, and a drive assembly. The motion assembly is arranged on both sides of the main body assembly. The main body assembly includes multiple rotating louvers. The two motion assemblies on both sides of the main body assembly control the rotation of the two sets of louvers in opposite directions. The drive assembly is arranged on the main body assembly and is used to drive the motion assembly to move and control the opening and closing of the multiple louvers. The display assembly is arranged on the main body assembly and is used to intuitively reflect the opening and closing degree of the multiple louvers.

[0004] Therefore, based on the above search and combined with the existing, in actual underground operation, the space is narrow and the environment is complex, which puts high requirements on the emergency response efficiency of the ventilation system. However, the patent sets multiple rotating louvers. When gas accumulation occurs underground and emergency ventilation is needed, the multi-layer louver structure will form an air flow obstruction during the unfolding process. Even in the fully unfolded state, it will still block part of the ventilation area, greatly limiting the ventilation volume, seriously affecting the gas dilution efficiency, and the overlapping part of the louvers may also produce turbulent flow. The turbulent airflow cannot effectively participate in the ventilation circulation, greatly reducing the effective ventilation volume, making it difficult to reduce the gas concentration in a short time, and posing a great threat to the life safety of mine workers and the stable operation of equipment. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a new type of adjusting air window in coal mine to solve the problems raised in the above background technology.

[0006] To achieve the above purpose, the utility model provides the following technical scheme:

[0007] The utility model provides a novel regulating air window in underground coal mine, including main body frame, the upper and lower both ends of main body frame are fixedly connected with a plurality of installation board for installation device, one side of main body frame is fixedly installed with rolling shutter window, one side of rolling shutter window is fixedly connected with the pull line for driving rolling shutter window operation, the center of main body frame is fixedly installed with stand, the inside rotation of main body frame is installed with two groups of rotating frame, and two groups of rotating frame evenly distribute in the both sides of stand, the inside of main body frame is opened with the air inlet groove for ventilation, and rotating frame is located in air inlet groove, the inner chamber of each group rotating frame is rotationally installed with the adjusting fan of adjusting structure for flexible control adjusting fan opening angle, can accurately control the air intake of device through adjusting structure, the inner chamber bottom of main body frame is fixedly installed with the drive structure for controlling the opening and closing of rotating frame, and the relative rotation of two groups of rotating frame is driven through drive structure, and then the rotating frame is completely unfolded, realizes the quick adjustment of air inlet groove area.

[0008] The inner wall of each group of rotating frame is fixedly installed with the adjusting structure for flexible control adjusting fan opening angle, and the air intake of the device can be accurately controlled through the adjusting structure.

[0009] As a further scheme of the utility model, the drive structure includes a connecting disc, the connecting disc is fixedly installed on the top surface of each group of rotating frame through bolts, the bottom surface of each group of rotating frame is fixedly installed with a transmission disc for driving the rotation of the rotating frame through bolts, and the transmission disc and the connecting disc are rotationally connected with the inner wall of the main body frame.

[0010] As a further scheme of the utility model, the inner wall of the main body frame is rotationally connected with a rotating shaft, a driving wheel for driving the rotation of the triangular gear is fixedly sleeved on the outer wall of the rotating shaft, and the outer wall of the driving wheel is provided with a sawtooth block which is engaged with the triangular gear.

[0011] As a further scheme of the utility model, the adjusting structure includes a connecting piece, a plurality of groups of connecting pieces are provided, each group of connecting pieces is symmetrically distributed on the bottom surface of each adjusting fan, a driving plate for driving the rotation of the adjusting fan is installed on one side of the adjusting fan, and the driving plate is rotationally connected with each connecting piece.

[0012] As a further scheme of the utility model, a power supply electric push rod is rotationally connected on one side of the driving plate, and the end of the electric push rod away from the driving plate is rotationally connected with the inner wall of the rotating frame.

[0013] As a further scheme of the utility model, the outer wall of the stand column is fixedly installed with a control terminal for controlling the intelligent operation of the device and a monitor for monitoring the gas content in real time, and the monitor is located below the control terminal.

[0014] Compared with the prior art, the utility model has the beneficial effects that:

[0015] 1, the utility model for using, through control terminal with monitor real time acquisition underground gas content data, once monitor gas concentration approaches or exceeds preset safety threshold, will rapidly send instruction to drive motor, drive motor can respond to the instruction of control terminal, rapidly drive rotating frame rotation, realize the quick adjustment of air inlet slot area, in the emergency situation such as gas accumulation, can increase ventilation volume, dilute accumulated gas in time, effectively reduce gas concentration, reduce safety risk, and in the synergistic effect of steering wheel and bevel gear, realize two drive wheels synchronous reverse rotation, ensure that the action of two groups of rotating frames relative rotation opening is coordinated, improve the efficiency of ventilation regulation, the cooperation of inclined plane and the inclined surface of stand column is used to provide accurate guidance for the rotation of rotating frame, avoid the collision between rotating frame and stand column, reduce friction loss, prolong the service life of the device.

[0016] 2, the utility model for using, through two groups of adjusting fan can realize independent or synchronous regulation, utilize the stroke of control electric push rod, can accurately control the opening angle (0°~90°) of adjusting fan, realize the fine adjustment of air volume, reduce air volume control error, satisfy different ventilation demand, cooperate with the adjusting fan of streamline blade, can reduce turbulence, reduce ventilation energy consumption, improve ventilation efficiency, the friction force that the silica gel sheet of connecting piece outer wall and rotating frame inner wall closely adhere can effectively avoid airflow push adjusting fan sway, ensure that adjusting fan stably maintains at the set opening angle, guarantee the stability of ventilation regulation. DRAWINGS

[0017] Figure 1 It is an internal structure schematic view of a novel regulating air window in coal mine.

[0018] Figure 2 It is an internal structure sectional view of a novel regulating air window in coal mine.

[0019] Figure 3 It is a structure diagram of a drive structure in a novel regulating air window in coal mine.

[0020] Figure 4 It is a detail view of a drive structure in a novel regulating air window in coal mine.

[0021] Figure 5 It is a detail view of a regulating structure in a novel regulating air window in coal mine.

[0022] Figure 6 It is a structural diagram of an adjusting structure in a new type of adjusting air window in a coal mine.

[0023] Figure 7 It is a structural diagram of an actual use scene of a new type of adjusting air window in a coal mine.

[0024] Figure 8 It is a whole structural schematic diagram of a new type of adjusting air window in a coal mine.

[0025] In the figure: 1, main frame; 2, mounting plate; 3, stand; 4, rotating frame; 5, adjusting fan; 601, connecting disc; 602, transmission disc; 603, triangular gear; 604, inclined plane plate; 605, rotating shaft; 606, drive wheel; 607, drive motor; 608, bevel gear; 609, steering wheel; 701, connecting piece; 702, drive plate; 703, electric push rod; 704, connecting shaft; 705, silica gel piece; 8, control terminal; 9, monitor; 10, anemometer; 11, roller shutter window; 12, pull wire. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0027] Embodiment one: please refer to Figure 1 , Figure 2 , Figure 7 , Figure 8 A new type of adjusting air window in a coal mine, comprising a main frame 1, a plurality of mounting plates 2 for mounting devices are fixedly connected to the upper and lower ends of the main frame 1, a roller shutter window 11 is fixedly installed on one side of the main frame 1, a pull wire 12 for driving the roller shutter window 11 to operate is fixedly connected to one side of the roller shutter window 11, a stand 3 is fixedly installed at the center of the main frame 1, since the underground ventilation system needs to withstand high-speed airflow impact and roadway deformation pressure, the stand 3 is located at the center of the device as a supporting structure to enhance the overall rigidity and prevent the device from deforming under high-pressure airflow, two groups of rotating frames 4 are rotatably installed in the inside of the main frame 1, and the two groups of rotating frames 4 are evenly distributed on both sides of the stand 3, an air inlet groove for ventilation is formed in the inside of the main frame 1, and the rotating frame 4 is located in the air inlet groove, an adjusting fan 5 is rotatably installed in the inner cavity of each group of rotating frames 4, the two groups of separately arranged adjusting fans 5 can realize independent or synchronous adjustment to improve the flexibility of air volume control to adapt to different ventilation needs.

[0028] The inner wall of each group of rotating frames 4 is fixedly installed with an adjusting structure for flexibly controlling the opening angle of the adjusting fan 5, the air inlet amount of the device can be accurately controlled through the adjusting structure, the bottom of the inner cavity of the main frame 1 is fixedly installed with a driving structure for controlling the opening and closing of the rotating frame 4, the driving structure drives the relative rotation of the two groups of rotating frames 4, and then the rotating frame 4 is completely unfolded, realizing the rapid adjustment of the air inlet slot area. Because there may be an emergency situation (such as gas accumulation) during underground operation, there is a certain safety hazard, the driving structure can quickly drive the rotating frame 4 to increase the ventilation volume, dilute the gas concentration in time, and effectively prevent gas explosion accidents;

[0029] Specifically, since the current underground air adjusting window is generally designed above the air door, it is not convenient to operate the opening size of the adjusting window due to the high height, sometimes a ladder or other auxiliary tools are needed to climb high to adjust, the pull wire 12 is located at a height suitable for personnel adjustment on the ground, which not only increases the labor intensity of personnel, but also has a certain safety hazard in climbing operation. A plurality of pulleys for assisting the movement of the pull wire 12 are installed outside the pull wire 12, and the pull wire 12 is wound in the pulleys. The lowermost end is provided with a rotating handle, after the work personnel complete the opening and closing of the roller shutter window 11 without climbing operation, the rotating handle can be locked with a pin to prevent loosening (the roller shutter window 11 is prior art and will not be described in detail here);

[0030] More specifically, the coal mine underground environment usually has typical characteristics of high humidity, high dust, and large pressure of roadway surrounding rock, the main frame 1 is made of high-strength steel to ensure its long-term stable operation in the complex underground environment, and the mounting plate 2 is used to fix the whole device, so that it can be firmly embedded in the roadway wall surface to prevent loosening caused by wind flow impact or roadway deformation. Each group of adjusting fans 5 is provided with a plurality of streamlined blades to reduce turbulence and reduce ventilation energy consumption. The opening angle (0°-90°) can be accurately controlled through the adjusting structure to realize fine adjustment of air volume and reduce air volume control error;

[0031] Please refer to Figure 2 、 Figure 3 、 Figure 4 The driving structure includes a connecting disc 601, the connecting disc 601 is fixedly installed on the top surface of each group of rotating frames 4 through bolts, the bottom surface of each group of rotating frames 4 is fixedly installed with a transmission disc 602 for driving the rotating frame 4 to rotate through bolts, the transmission disc 602 and the connecting disc 601 are rotatably connected with the inner wall of the main frame 1 through a pin shaft, and the bottom surface of each transmission disc 602 is fixedly installed with a triangular gear 603 for transmitting rotating kinetic energy;

[0032] Specifically, each group of rotating frame 4 and the side of the column 3 is fixedly installed with a bevel plate 604, the column 3 is provided with an inclined surface near the rotating frame 4, the inclined surface and the bevel plate 604 are consistent with the inclination angle, and the two are inlaid, when the triangular gear 603 drives the transmission disc 602 to drive the rotating frame 4 to rotate with the connecting disc 601 as the center, the rotating frame 4 drives the bevel plate 604 to make a precise guide motion on the preset inclined surface, that is, to provide space for the rotating frame 4 to rotate, and to effectively avoid the collision between the rotating frame 4 and the column 3 during rotation, reduce friction loss, and prolong the service life of the device;

[0033] The inner wall of the main frame 1 is rotatably connected with a rotating shaft 605 through a bearing, the outer wall of the rotating shaft 605 is fixedly provided with a driving wheel 606 for driving the triangular gear 603 to rotate, the outer wall of the driving wheel 606 is provided with a sawtooth block, and it is engaged with the triangular gear 603;

[0034] Specifically, the inner cavity of the main frame 1 is fixedly provided with a driving motor 607, and the output end of the driving motor 607 is fixedly connected with one end of the rotating shaft 605, so that the rotation of the rotating frame 4 provides power;

[0035] More specifically, the rotating shaft 605 is composed of two sections, and the corresponding side of the two sections of the rotating shaft 605 is fixedly provided with a bevel gear 608, the inner wall of the main frame 1 is rotatably connected with a connecting rod through a bearing, the bottom end of the connecting rod is fixedly provided with a steering wheel 609, and the outer wall of the steering wheel 609 is rotatably connected with the two bevel gears 608, respectively, through the cooperation of the steering wheel 609 and the two bevel gears 608, the two driving wheels 606 provided on the outer wall of the rotating shaft 605 are synchronously and reversely rotated, so as to realize the relative rotation of the two groups of rotating frames 4.

[0036] Example two: please refer to Figure 3 、 Figure 5 、 Figure 6 , based on the basis of example 1, the adjusting structure includes a connecting piece 701, the connecting piece 701 is provided with multiple groups with two as a group, and each group of connecting pieces 701 is symmetrically distributed on the bottom surface of each adjusting fan 5, one side of the adjusting fan 5 is provided with a driving plate 702 for driving the adjusting fan 5 to rotate, and the driving plate 702 is rotatably connected with each connecting piece 701 through a pin shaft;

[0037] One side of the driving plate 702 is rotatably connected with an electric push rod 703 for providing power through a pin shaft, and the end of the electric push rod 703 away from the driving plate 702 is rotatably connected with the inner wall of the rotating frame 4 through a pin shaft, the electric push rod 703 pushes the driving plate 702 to move downward, and then drives the connecting piece 701 to control the adjusting fan 5 to rotate upward, so as to realize the opening of the adjusting fan 5;

[0038] Specifically, the inner part of each connecting piece 701 is fixedly connected with a connecting shaft 704, one end of the connecting shaft 704 is rotatably connected with the inner wall of the rotating frame 4, thereby providing an axis point for the connecting piece 701, so that the connecting piece 701 rotates with the connecting shaft 704 as the center, and the outer wall of each connecting piece 701 close to the rotating frame 4 is fixedly installed with a silica gel sheet 705, and the silica gel sheet 705 is tightly attached to the inner wall of the rotating frame 4, the silica gel sheet 705 and the rotating frame 4 are used to rub each other, and the position of the adjusting fan 5 is kept by the friction force, so that the flowing air flow pushes the adjusting fan 5 to avoid shaking.

[0039] Please refer to Figure 1 、 Figure 2 , the outer wall of the stand 3 is fixedly installed with a control terminal 8 for controlling the intelligent operation of the device and a monitor 9 for monitoring the gas content in real time, and the monitor 9 is located below the control terminal 8, and the inside of the stand 3 is rotatably installed with a wind speed meter 10 for monitoring wind force through a bearing.

[0040] The working principle of the utility model is:

[0041] First, the gas content is monitored in real time by the monitor 9, and the wind speed is monitored in real time by the wind speed meter 10, and the data is transmitted to the control terminal 8 in real time, the control terminal 8 issues control instructions to the driving motor 607 and the electric push rod 703 according to the preset parameters and the real-time monitoring data, realizes the intelligent adjustment of the air inlet amount, changes the ventilation area and ventilation volume of the air inlet slot, and meets the underground ventilation requirements;

[0042] In the daily ventilation process, after the electric push rod 703 receives the instruction of the control terminal 8, the driving plate 702 is pushed to move downward, the driving plate 702 drives the connecting piece 701 to rotate with the connecting shaft 704 as the center through the pin shaft, thereby controlling the adjusting fan 5 to rotate upward, realizing the opening of the adjusting fan 5, at the same time, the silica gel sheet 705 on the outer wall of the connecting piece 701 is tightly attached to the inner wall of the rotating frame 4, and the position of the adjusting fan 5 is kept by the friction force between the two, preventing the air flow from pushing the adjusting fan 5 to shake, and ensuring that the adjusting fan 5 is stably maintained at the set opening angle;

[0043] When the gas accumulation or ventilation demand changes are monitored, the control terminal 8 will regulate the driving motor 607, and after the driving motor 607 is started, the output end drives the rotating shaft 605 to rotate, the bevel gears 608 on the two opposite sides of the rotating shaft 605 are meshed with the steering wheels 609, so that the two driving wheels 606 are synchronously and reversely rotated, the sawtooth blocks on the outer wall of the driving wheels 606 are meshed with the triangular gears 603, the rotating kinetic energy is transmitted to the triangular gears 603, the triangular gears 603 drive the transmission disc 602 to rotate, since the transmission disc 602 and the connecting disc 601 are both rotationally connected with the inner wall of the main body frame 1 through the pin shafts, the rotating frame 4 will rotate with the connecting disc 601 as the center, at the same time, the inclined plane plates 604 on the rotating frame 4 do accurate guiding motion along the inclined surfaces on the stand columns 3, the two groups of rotating frames 4 are relatively rotated, so that the rotating frame 4 is completely opened, the area of the air inlet groove is increased, and the ventilation volume is improved, so that the effect of timely diluting the gas concentration is achieved, and the gas explosion accident is effectively prevented.

[0044] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A new type of regulating air window in underground coal mine comprising a main frame (1), characterized in that, The upper and lower ends of the main frame (1) are fixedly connected with a plurality of mounting plates (2) for mounting devices, one side of the main frame (1) is fixedly provided with a roller shutter window (11), one side of the roller shutter window (11) is fixedly connected with a pull wire (12) for driving the roller shutter window (11) to operate, the center of the main frame (1) is fixedly provided with a stand column (3), the inside of the main frame (1) is rotatably provided with two groups of rotating frames (4), and the two groups of rotating frames (4) are evenly distributed on the two sides of the stand column (3), the inside of the main frame (1) is provided with an air inlet groove for ventilation, and the rotating frame (4) is located in the air inlet groove, and the inner cavity of each group of rotating frames (4) is rotatably provided with an adjusting fan (5). The inner wall of each group of rotating frames (4) is fixedly provided with an adjusting structure for controlling the opening angle of the adjusting fan (5), the adjusting structure can accurately control the air inlet amount of the device, and the inner cavity of the main frame (1) is fixedly provided with a driving structure for controlling the opening and closing of the rotating frame (4), the driving structure drives the relative rotation of the two groups of rotating frames (4), and then the rotating frame (4) is completely unfolded, so that the air inlet groove area is quickly adjusted.

2. The new type of air adjusting window in underground coal mine according to claim 1, characterized in that, The driving structure comprises a connecting disc (601), the connecting disc (601) is fixedly installed on the top surface of each group of rotating frames (4) through bolts, the bottom surface of each group of rotating frames (4) is fixedly provided with a transmission disc (602) for driving the rotating frame (4) to rotate through bolts, and the transmission disc (602) and the connecting disc (601) are rotatably connected with the inner wall of the main frame (1). The bottom surface of each transmission disc (602) is fixedly provided with a triangular gear (603) for transmitting rotation energy.

3. The new type of air adjusting window in underground coal mine according to claim 2, characterized in that, The inner wall of the main frame (1) is rotatably connected with a rotating shaft (605), the outer wall of the rotating shaft (605) is fixedly provided with a driving wheel (606) for driving the triangular gear (603) to rotate, the outer wall of the driving wheel (606) is provided with a sawtooth block, and the sawtooth block is engaged with the triangular gear (603).

4. The new type of air adjusting window in underground coal mine according to claim 1, characterized in that, The adjusting structure comprises a connecting piece (701), a plurality of groups of connecting pieces (701) are provided, each group of connecting pieces (701) is symmetrically distributed on the bottom surface of each adjusting fan (5), one side of the adjusting fan (5) is provided with a driving plate (702) for driving the adjusting fan (5) to rotate, and the driving plate (702) is rotatably connected with each connecting piece (701).

5. The new type of air conditioning window in underground coal mine according to claim 4, characterized in that, One side of the driving plate (702) is rotatably connected with an electric push rod (703) for providing power, and the end of the electric push rod (703) away from the driving plate (702) is rotatably connected with the inner wall of the rotating frame (4). The electric push rod (703) pushes the driving plate (702) to move downward, and then drives the connecting piece (701) to control the adjusting fan (5) to rotate upward, so as to open the adjusting fan (5).

6. The new type of air adjusting window in underground coal mine according to claim 1, characterized in that, The outer wall of the column (3) is fixedly provided with a control terminal (8) for controlling intelligent operation of the device and a monitor (9) for monitoring gas content in real time, and the monitor (9) is located below the control terminal (8), and the inside of the column (3) is rotatably provided with a wind speed meter (10) for monitoring wind.

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