Coal mine dust ventilation system

Abstract

The utility model discloses a coal mine dust ventilation system which comprises a ventilation box provided with an air inlet and an air outlet, and is characterized in that a cyclone separator and a filter pipe are arranged in the ventilation box, an air inlet pipe of the cyclone separator is communicated with the air inlet, an air outlet pipe of the cyclone separator is communicated with the filter pipe, and the filter pipe is communicated with the air outlet; a filter screen frame and blades are sequentially arranged in the filter pipe in the airflow direction of the air outlet, a rotating shaft is connected to a blade shaft, a filter screen is arranged on the filter screen frame, a circular ring is arranged in the center of the filter screen frame, cross rods connected with the filter screen frame are arranged on the two sides of the circular ring respectively, and a boss is arranged on the inner wall of the circular ring; when the blades rotate, the blade shaft drives the rotating shaft to rotate, and then the protruding block is driven to intermittently touch and jack up the boss, so that the filter screen continuously vibrates. According to the scheme, the problems that a filter screen of a traditional ventilation system is prone to being blocked and cannot be automatically cleaned are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of ventilation equipment, and particularly relates to a coal mine dust ventilation system. Background Art

[0002] The main function of the coal mine dust ventilation system is to reduce the dust concentration inside the mine through ventilation, so as to improve the working environment and ensure the health and safety of workers. Dust is likely to accumulate in the mine. Workers may suffer from occupational diseases such as pneumoconiosis after long-term exposure to a high-concentration dust environment. In addition, dust is also explosive and prone to cause safety accidents. Therefore, the coal mine dust ventilation system is an indispensable equipment in coal mine production.

[0003] At present, the widely used equipment in the coal mine dust ventilation system includes cyclone separators, electrostatic precipitators, bag filters, etc. The cyclone separator uses centrifugal force to separate dust from the air flow. Large particle dust is thrown to the wall of the device and falls under the action of centrifugal force, and small particle dust is discharged from the outlet pipe with the air flow. The electrostatic precipitator uses a high-voltage electric field to charge dust particles, and the charged particles are deposited on the electrode plate under the action of the electric field force and separated from the air flow. The bag filter captures dust through multiple layers of filter bags. When the air flow passes through the filter bags, the dust is blocked and adheres to the surface of the filter bags, and the filtered air is discharged.

[0004] Although the cyclone separator has a high efficiency in treating large particle dust, the separation effect for tiny particle dust is not satisfactory. The separation effect of the cyclone separator highly depends on the particle size of the dust particles. Due to the small centrifugal force, small particle dust is easily discharged with the air flow, resulting in a decline in the separation effect; too high or too low air flow velocity will reduce the separation efficiency and cannot ensure continuous and stable high-efficiency separation. To improve the dust separation effect, the traditional method is usually to continue to install a filter screen after the cyclone separator. However, dust adheres to the filter screen for a long time and gradually accumulates to form a blockage, reducing the air flow velocity and affecting the overall ventilation effect. After the filter screen is blocked, it needs to be cleaned and replaced frequently, increasing the maintenance cost and operation difficulty, and affecting the normal operation and service life of the equipment.

[0005] In summary, although the existing coal mine dust ventilation system can improve the air quality inside the mine to a certain extent, due to the poor separation effect of the cyclone separator on tiny particle dust and the problem that the traditional method of installing a filter screen is prone to blockage, the overall efficiency and effect are not ideal. Content of the Utility Model

[0006] The purpose of the utility model is to solve or alleviate the problem that the filter screen in the existing coal mine dust ventilation system is easily blocked, and to propose a coal mine dust ventilation system.

[0007] The utility model is realized through the following technical solutions: A coal mine dust ventilation system includes a ventilation box, which is respectively provided with an air inlet and an air outlet. Inside the ventilation box, there are a cyclone separator and a filter tube. The intake pipe of the cyclone separator is connected to the air inlet, the outlet pipe of the cyclone separator is connected to the filter tube, and the filter tube is connected to the air outlet. Along the air flow direction of the air outlet, a filter screen frame and blades are sequentially arranged inside the filter tube. A rotating shaft is connected to the blade shaft. A filter screen is arranged on the filter screen frame. An opening is provided at the central position of the filter screen. A ring matching the opening is arranged inside the opening. Cross bars connected to the filter screen frame are respectively arranged on both sides of the ring. A convex platform is arranged on the inner wall of the ring. A convex block is arranged on the rotating shaft. When the blade rotates, the blade shaft drives the rotating shaft to rotate, and then drives the convex block to intermittently touch and lift the convex platform, so that the filter screen continuously generates vibration in the vertical direction. At the bottom of the filter tube, through holes parallel to the filter screen are respectively arranged on both sides of each filter screen.

[0008] The separation effect of the cyclone separator highly depends on the particle size of the dust particles. Since the centrifugal force of small particle dust is small, it is easy to be discharged with the air flow, resulting in a decline in the separation effect. To improve the dust separation effect, the traditional method is usually to further install a filter screen after the cyclone separator. However, dust adheres to the filter screen for a long time and gradually accumulates to form blockage, reducing the air flow passing speed and affecting the overall ventilation effect. After the filter screen is blocked, it needs to be frequently cleaned and replaced, increasing the maintenance cost and operation difficulty, and affecting the normal operation and service life of the equipment. In the utility model, when the dust gas enters the ventilation box from the air inlet, the dust gas first passes through the cyclone separator, and the large particle dust is separated and falls downward into the dust collection box. The small particle gas carrying the unseparated gas continues to rotate and rise into the outlet pipe. When passing through the filter screen, it is filtered again, and then the air flow is discharged outside the ventilation box. When discharging, the air flow drives the blade to rotate, and the blade shaft drives the rotating shaft to rotate. Because there is a convex block on the rotating shaft and a convex platform is arranged on the inner wall of the ring in the center of the filter screen, the convex block continuously impacts and lifts the convex platform during the rotation process, thereby driving the filter screen to vibrate up and down, shaking off the dust adhering to the filter screen, and falling into the dust collection box through the opening below the filter tube, preventing the filter screen from being blocked by dust after long-term use, affecting the ventilation effect of the equipment, solving the problem of filter screen blockage, ensuring the filtration efficiency during long-term use, improving the air purification effect, and reducing the maintenance frequency. A plurality of through holes parallel to the filter screen are arranged below the filter tube. Simplify the dust collection process, reduce the secondary pollution of dust in the filter tube, and ensure the continuous and efficient operation of the system.

[0009] Further, a movable sealing ring matching the rotating shaft is arranged on the rotating shaft, and a first bellows is arranged between the ring and the rotating shaft to connect them to prevent dust particles from passing through the ring.

[0010] Further, a groove matching the contour of the filter screen frame is provided on the inner wall of the filter tube, and a first spring connecting the inner wall of the groove and the filter screen frame is provided in the groove; a second bellows is provided between the periphery of the filter screen frame and the inner wall of the filter tube to connect the two. When the first spring is in the initial state, the filter screen frame is located in the groove and there is a gap between each end face of the filter screen frame and the bottom of the groove, and the convex block can continuously touch and lift the convex platform. The elastic force provided by the first spring helps the filter screen frame to return to its original position, thereby forming a continuous vibration effect.

[0011] Further, one end of the rotating shaft is connected to the blade shaft, and the other end is connected with a bearing; the number of the filter screens is multiple, and along the air flow direction of the air outlet, the aperture of each filter screen decreases in sequence. This improves the filtration accuracy, ensures that dust particles of different sizes can be effectively captured and filtered, and further enhances the air purification effect.

[0012] Further, the cyclone separator is cylindrical, and a spiral separation member matching the inner wall of the cyclone separator is provided inside it; along the direction of dust falling, the diameter of the cyclone separator gradually decreases; the shape of the separation member also changes accordingly. The cyclone separator is designed to be cylindrical to improve the separation efficiency; the shape of the separation member inside the cyclone separator changes with the diameter, making it easier for dust to be separated by the centrifugal force and fall into the dust collection box.

[0013] Further, the air outlet pipe is divided into a vertical section and a horizontal section that are perpendicularly connected; the horizontal section of the air outlet pipe is cylindrical, and along the air flow direction, the diameter of the horizontal section of the air outlet pipe gradually decreases. The purpose is to increase the air flow speed, optimize the air flow power, and ensure that the air flow is discharged at a higher speed after passing through the cyclone separator and the filter screen.

[0014] Further, a dust collection box is provided at the bottom of the air exchange box, and a second spring connecting the dust collection box and the air exchange box is provided below the dust collection box.

[0015] Further, a spraying mechanism is provided above the interior of the air exchange box, a water tank is provided at the top of the air exchange box, and a water pump is provided in the water tank.

[0016] Further, the spraying mechanism includes spray heads arranged in a straight line, and each spray head is connected through a bracket.

[0017] Further, an observation port is provided on the side wall of the air exchange box, and a dust collection indicator passing through the observation port is provided on the dust collection box. The dust collection indicator is connected to the dust collection box through the observation port to provide a real-time display of the dust accumulation amount.

[0018] Compared with the prior art, the present utility model has the following advantages and beneficial effects:

[0019] 1. In the technical solution of the present utility model, the dust gas first passes through a cyclone separator. Large particle dust is separated and falls downward into the dust collection box. The gas carrying small particles that have not been separated continues to rotate upward and enters the horizontal air outlet pipe. When passing through the filter screen, it is filtered again, and then the air flow is discharged outside the ventilation box. When discharging, the air flow drives the blades to rotate, and the blade shaft drives the rotating shaft to rotate. There are bumps on the rotating shaft, and there are bosses on the inner wall of the ring in the center of the filter screen. The bumps continuously impact and lift the bosses during the rotation process, thereby driving the filter screen to vibrate up and down, so that the dust attached to the filter screen is shaken off and falls into the dust collection box through the opening below the filter pipe, preventing the filter screen from being blocked by dust after long-term use, affecting the ventilation effect, solving the problem of filter screen blockage, ensuring the filtration efficiency during long-term use, improving the air purification effect, and reducing the maintenance frequency.

[0020] 2. In the technical solution of the present utility model, each filter screen is fixed on the corresponding filter screen frame, and the bearing is used to support the stable rotation of the rotating shaft. One end of the rotating shaft away from the blade is supported by a bearing. Multiple filter screens are arranged in sequence along the air flow direction, and the aperture gradually decreases, so as to be able to filter dust particles of different sizes. The multi-layer filter screen design improves the filtration accuracy, ensures that dust particles of different sizes can be effectively captured and filtered, and further improves the air purification effect.

[0021] 3. In the technical solution of the present utility model, the cyclone separator is cylindrical, and there is a separation component inside it. Along the direction of dust falling, the diameter of the cyclone separator gradually decreases; the shape of the separation component also changes accordingly; the cyclone separator is designed to be cylindrical to improve the separation efficiency; the shape of the separation component in the cyclone separator changes with the diameter, making it easier for the dust to be separated by the centrifugal force and fall into the dust collection box. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings described herein are used to provide a further understanding of the embodiments of the present utility model, form a part of this application, and do not constitute a limitation to the embodiments of the present utility model.

[0023] In the drawings:

[0024] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0025] Figure 2 is a schematic diagram of the shape, installation method and position of the filter screen frame and filter screen in an embodiment of the present utility model;

[0026] Figure 3 is a schematic diagram of the shape, installation method and position of the filter screen frame and filter screen in another embodiment of the present utility model;

[0027] Figure 4 is Figure 1 an enlarged view of the structure at A of

[0028] Figure 5 is Figure 1 The enlarged view of the structure at position B of

[0029] The reference numerals in the drawings represent:

[0030] 1, air change box; 2, air inlet; 21, dust suction hopper; 3, air outlet; 4, intake pipe; 5, cyclone separator body; 51, vertical air outlet pipe; 52, separation member; 53, horizontal air outlet pipe; 6, filter pipe; 61, through hole; 62, second bellows; 7, blade; 71, rotating shaft; 711, convex block; 72, bearing; 73, movable sealing ring; 8, filter screen frame; 81, first spring; 82, cross bar; 83, ring; 831, boss; 84, filter screen; 85, first bellows; 9, dust collection box; 91, dust collection indicator; 92, second spring; 93, guiding projection; 10, water tank; 11, bracket; 111, nozzle; 12, water pump; 13, water inlet; 14, pressure stabilizing valve. Specific embodiments

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions of the embodiments of the present utility model will be clearly and completely described below in conjunction with the drawings of the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present utility model without creative efforts shall fall within the scope of protection of the present utility model. The illustrative embodiments and descriptions thereof of the present utility model are only used to explain the present utility model and are not intended to limit the present utility model. It should be noted that the present utility model is already in the actual research and development and use stage.

[0032] Unless otherwise defined, the technical terms or scientific terms used in the present utility model shall have the ordinary meanings understood by those of ordinary skill in the art to which the present utility model belongs. The "first", "second", and similar terms used in the present utility model do not denote any order, quantity, or importance, but are only used to distinguish different components. The terms such as "including" or "comprising" mean that the elements or items appearing before the term cover the elements or items listed after the term and their equivalents, without excluding other elements or items.

[0033] Although cyclone separators are highly effective in handling large particulate dust, their separation efficiency for fine particulate dust is relatively poor. The separation efficiency of cyclone separators highly depends on the particle size of the dust particles. Small particulate dust is prone to being discharged with the airflow due to the relatively small centrifugal force, thereby reducing the separation effect. In addition, both too high and too low airflow velocities will affect the separation efficiency and cannot ensure continuous and stable high-efficiency separation. Traditional methods usually involve installing a filter screen after the cyclone separator. However, the dust on the filter screen will gradually accumulate, resulting in the blockage of the filter screen, reducing the airflow passing speed, and affecting the overall ventilation effect. After the filter screen is blocked, it needs to be frequently cleaned and replaced, increasing the maintenance cost and operation difficulty. These problems require further improvement of the coal mine dust ventilation system to achieve more efficient dust separation and more reliable operation.

[0034] Example 1:

[0035] Please refer to the attached Figure 1 to the attached Figure 4 A coal mine dust ventilation system includes a ventilation box 1. An air inlet 2 and an air outlet 3 are respectively provided on the ventilation box 1. Inside the ventilation box 1, there are a cyclone separator and a filter pipe 6. The intake pipe 4 of the cyclone separator is connected to the air inlet 2, the horizontal outlet pipe 53 of the cyclone separator is connected to the filter pipe 6, and the filter pipe 6 is connected to the air outlet 3. Along the airflow direction of the air outlet 3, a filter screen frame 8 and blades 7 are successively arranged inside the filter pipe 6. A rotating shaft 71 is connected to the shaft of the blade 7. A filter screen 84 is provided on the filter screen frame 8. An opening is provided at the central position of the filter screen 84. A ring 83 matching the opening is arranged inside the opening. Cross bars 82 connected to the filter screen frame 8 are respectively provided on both sides of the ring 83. A boss 831 is provided on the inner wall of the ring 83. A protrusion 711 is provided on the rotating shaft 71. When the blade 7 rotates, the shaft of the blade 7 drives the rotating shaft 71 to rotate, and then drives the protrusion 711 to intermittently touch and lift the boss 831, causing the filter screen 84 to continuously vibrate in the vertical direction. At the bottom of the filter pipe 6, through holes parallel to the filter screen 84 are respectively provided on both sides of each filter screen 84.

[0036] When the dust gas enters the ventilation box 1 from the air inlet 2, the dust gas first passes through the cyclone separator. Large particle dust is separated and drops downward into the dust collection box 9. The gas carrying the unseparated small particles continues to rotate upward and enters the horizontal air outlet pipe 53. When passing through the filter screen 84, it is filtered again. Then the air flow is discharged outside the ventilation box 1. When discharging, the air flow drives the blade 7 to rotate, and the blade 7 shaft drives the rotating shaft 71 to rotate. Since there are bumps 711 on the rotating shaft 71, and there are bosses 831 on the inner wall of the ring 83 in the center of the filter screen 84, the bumps 711 continuously impact and lift the bosses 831 during the rotation process, thereby driving the filter screen 84 to vibrate up and down, so that the dust attached to the filter screen 84 is shaken off and falls into the dust collection box 9 through the opening below the filter pipe 6, preventing the filter screen 84 from being blocked by dust after long-term use, affecting the ventilation effect of the equipment, solving the problem of blockage of the filter screen 84, ensuring the filtration efficiency during long-term use, improving the air purification effect, and reducing the maintenance frequency.

[0037] It should be noted that the cyclone separator adopted in the solution of the present utility model is a spiral cyclone separator, which is composed of a body, an air inlet pipe, a separation member, a conical bottom, and an air outlet pipe. Among them, the function of the air inlet pipe is to allow dust particles to enter the separator body; the separation member is generally a spiral channel, which is the core part of the cyclone separator and functions to guide the rotation of the dust particle mixture; larger dust solid particles are pushed to the bottom under the action of centrifugal force and discharged through the outlet at the bottom; the remaining gas is discharged through the air outlet pipe. This cyclone separator can be made of metal or high-temperature resistant plastic materials to improve durability and corrosion resistance.

[0038] When the dust is shaken off from the filter screen 84, it will accumulate below the filter pipe 6. If the accumulation is too much, it will also affect the ventilation efficiency of the equipment. By opening a through hole 61 below the filter pipe 6, the dust can pass through the through hole 61 under the action of gravity and the wind force of the shunt gas and fall into the dust collection box 9. It should be noted that the opening diameter of the through hole 61 should not be too large, otherwise the air flow in the filter pipe 6 will be re-introduced into the ventilation box 1. Therefore, its actual diameter should be flexibly changed in different usage scenarios.

[0039] To improve the adaptability of the device, during actual application, a filter screen 84 with an adjustable aperture can also be designed. The support 11 of the filter screen 84 can adjust the relative position of the filter screen 84 through a screw mechanism or a sliding device, thereby changing the aperture size. Adjustable rods are installed on both sides of the support 11 of the filter screen 84. The adjustable rods are connected to the upper and lower parts of the filter screen 84. By rotating or sliding the adjustable rods, the overlapping degree of the filter screen 84 can be changed, and further the aperture size can be adjusted. When it is necessary to change the aperture of the filter screen 84, the operator rotates or slides the adjustable rods, and the relative position of the upper and lower parts of the frame of the filter screen 84 changes, resulting in the change of the aperture size of the filter screen 84. After the aperture of the filter screen 84 is adjusted, it can adapt to the dust filtration requirements of different particle sizes, ensuring that the system can maintain high-efficiency filtration performance under various working conditions.

[0040] It should be noted that the design of the through holes 61 simplifies the dust collection process, reduces the secondary pollution of dust in the filter tube 6, and ensures the continuous and efficient operation of the system. The size and quantity of the through holes 61 can be optimized according to specific requirements.

[0041] During the actual operation of the equipment, due to air flow fluctuations, the air pressure inside and outside the ventilation box 1 may be inconsistent. In some cases, the air pressure inside the ventilation box 1 may gradually increase, leading to risk accidents. To prevent this phenomenon, in this embodiment, a pressure stabilizing valve 14 can be provided on the side wall of the ventilation box to balance the internal and external air pressures. To prevent dust overflow, one or more layers of filter screens should be provided in the pressure stabilizing valve 14.

[0042] The bellows cover is similar to the pleated structure on the organ, referring to a design with multiple layers of flexible materials formed by sewing or hot pressing into parallel pleats. It is usually made of flexible materials such as nylon and PVC, which have good stretchability and durability. This design enables the bellows cover to remain flat and compact during stretching and shrinking, while providing good protection.

[0043] There is a better implementation method in this embodiment. An active sealing ring 73 matching the rotating shaft 71 is provided on the rotating shaft 71. A first bellows cover 85 connecting each other is provided between the circular ring 83 and the rotating shaft 71 to prevent dust particles from passing through the holes in the circular ring 83.

[0044] There is a better implementation method in this embodiment. A groove 63 matching the contour of the filter screen frame 8 is provided on the inner wall of the filter tube 6. A first spring 81 connecting the inner wall of the groove 63 and the filter screen frame 8 is provided in the groove 63. A second bellows cover 62 connecting each other is provided between the periphery of the filter screen frame 8 and the inner wall of the filter tube 6. When the first spring 81 is in the initial state, the filter screen frame 8 is located in the groove 63 and there is a gap between each end face of the filter screen frame 8 and the bottom of the groove 63, and the convex block 711 can continuously touch and lift the convex platform 831.

[0045] It should be noted that the function of the second organ cover 62 is to seal the gaps around the filter screen frame 8, ensure that dust particles do not pass through it, and reduce the efficiency of the filtering device.

[0046] It should be noted that when the blade 7 rotates to drive the rotating shaft 71, the convex block 711 touches and lifts the convex platform 831 on the filter screen frame 8, and the elastic force provided by the first spring 81 helps the filter screen frame 8 to return to its original position, thereby forming a continuous vibration effect; during the vibration of the filter screen 84, the first spring 81 provides additional elastic support to ensure that the convex block 711 can continuously touch and lift the convex platform 831; the spring structure ensures the continuous vibration of the filter screen 84, improves the efficiency of dust shaking off, avoids the blockage of the filter screen 84, and prolongs the operation time of the equipment. It should be noted that the spring material can be selected from stainless steel or high-temperature resistant alloy to ensure elasticity and durability.

[0047] There is a better implementation method in this embodiment. One end of the rotating shaft 71 is axially connected to the blade 7, and the other end is connected with a bearing 72. The number of filter screens 84 is multiple, and along the air flow direction of the air outlet 3, the aperture of each filter screen 84 decreases in sequence.

[0048] Each filter screen 84 is fixed on the corresponding filter screen frame 8, and the bearing 72 is used to support the stable rotation of the rotating shaft 71; one end of the rotating shaft 71 away from the blade 7 is supported by the bearing 72, and multiple filter screens 84 are arranged in sequence along the air flow direction, and the aperture gradually decreases, so that dust particles of different sizes can be filtered; the multi-layer filter screen 84 design improves the filtering accuracy, ensures that dust particles of different sizes can be effectively captured and filtered, and further improves the air purification effect. It should be noted that the bearing 72 can be selected as a high-precision ball bearing 72 to ensure the stability and durability of rotation; the filter screen 84 can be made of different materials, for example, the primary filter screen 84 is made of metal mesh, and the intermediate and high-grade filter screens 84 are made of fiber or HEPA filter materials.

[0049] On the basis of the above solution, there is a better implementation method in this embodiment. The cyclone separator is cylindrical, and a spiral separation member 52 matching the inner wall of the cyclone separator is arranged inside it; along the direction of dust falling, the diameter of the cyclone separator gradually decreases; the shape of the separation member 52 also changes accordingly; the cyclone separator is designed to be cylindrical to improve the separation efficiency; the shape of the separation member 52 inside the cyclone separator changes with the diameter, so that dust is more easily separated by the centrifugal force and falls into the dust collection box 9.

[0050] It should be noted that the material of the separation member 52 can be selected from wear-resistant and corrosion-resistant materials, such as ceramics or special alloys.

[0051] After the dust gas enters the cyclone separator, under the action of centrifugal force, large-particle dust falls along the separation member 52 into the dust collection box 9, reducing the amount of dust entering the filter tube 6; the optimized design of the cyclone separator improves the separation efficiency of large-particle dust, reduces the burden on the subsequent filtration link, and improves the efficiency of the overall system.

[0052] There is a better implementation method in this embodiment. The air outlet pipe 53 is divided into a vertical section and a horizontal section that are perpendicularly connected; the horizontal section of the air outlet pipe 53 is cylindrical, and along the direction of air flow, the diameter of the horizontal section of the air outlet pipe 53 gradually decreases. The purpose is to increase the air flow speed, optimize the air flow dynamics, ensure that the air flows out at a higher speed after passing through the cyclone separator and the filter screen 84, and improve the ventilation efficiency of the system.

[0053] It should be noted that when the air flows through the gradually decreasing horizontal air outlet pipe 53, the air flow speed will increase, thereby enhancing the filtration effect and the air discharge speed, reducing the burden on the filter, and at the same time enhancing the efficiency and effect of the overall ventilation system; the material of the air outlet pipe 53 can be selected as corrosion-resistant metal or high-strength composite material to improve the service life.

[0054] There is a better implementation method in this embodiment. A dust collection box 9 is provided at the bottom of the ventilation box 1. After the dust vibrates and falls from the cyclone separator and the filter screen 84, it accumulates in the dust collection box 9. The second spring 92 provides support and is equipped with a travel switch to detect the dust weight; the dust collection box 9 is installed at the bottom of the ventilation box 1 through the second spring 92. As the dust accumulates and the weight increases, the dust collection box 9 gradually sinks; when the weight reaches the set value, the travel switch will trigger an alarm to prompt that the dust collection box 9 needs to be cleaned. This design provides an automatic prompt function, enabling maintenance personnel to clean the dust collection box 9 in a timely manner, avoiding equipment damage or efficiency reduction caused by excessive dust, and improving the intelligence and maintenance convenience of the equipment. The material of the dust collection box 9 can be selected as transparent high-strength plastic or corrosion-resistant metal for easy observation and cleaning.

[0055] Embodiment 2:

[0056] Please refer to the attached Figure 1 On the basis of Embodiment 1, there is a better implementation method in this embodiment. A spraying mechanism is provided above the interior of the ventilation box 1, and a water tank 10 is provided at the top of the ventilation box 1, and a water pump 12 is provided in the water tank 10; the spraying mechanism includes a plurality of nozzles 111, which are evenly distributed inside the ventilation box 1 and are supplied with water from the water tank 10 through the water pump 12. The spraying mechanism is installed above the interior of the ventilation box 1, and the water tank 10 is connected to the nozzles 111 through a pipeline, and the water pump 12 provides water pressure so that the nozzles 111 can spray water mist evenly to adsorb fine dust particles in the air.

[0057] It should be noted that when the system is running, the water pump 12 sends the water pressure in the water tank 10 to the nozzle 111, forming a uniform water mist that covers the entire inside of the ventilation box 1, adsorbing the floating dust particles in the air and causing them to settle into the dust collection box 9; the spraying mechanism effectively reduces the fine dust in the air, improves the air quality, and at the same time reduces the wear of the filter screen 84 and other components by the dust, extending the service life of the equipment.

[0058] There is a better implementation method in this embodiment. The spraying mechanism includes nozzles 111 arranged in a straight line, and each nozzle 111 is connected through a bracket 11: The nozzles 111 in the spraying mechanism are arranged in a straight line and fixed by the bracket 11 to ensure uniform spraying coverage. A plurality of nozzles 111 are evenly arranged inside the ventilation box 1 and fixed by the bracket 11 to ensure that the spraying uniformly covers the entire upper area of the ventilation box 1, providing comprehensive dust control.

[0059] It should be noted that under the action of the water pump 12, the nozzles 111 evenly spray water mist to cover the inside of the ventilation box 1, adsorb the floating dust particles, and cause them to settle into the dust collection box 9. The design of the nozzles 111 arranged in a straight line ensures the uniform distribution of the water mist, improves the effect of dust control, further purifies the air, and improves the safety and comfort of the working environment.

[0060] There is a better implementation method in this embodiment. An observation port is provided on the side wall of the ventilation box 1, and a dust collection indicator 91 passing through the observation port is provided on the dust collection box 9; the dust collection indicator 91 is connected to the dust collection box 9 through the observation port to provide a real-time display of the dust accumulation amount; a transparent observation port is provided on the side wall of the ventilation box 1, and the dust collection indicator 91 is installed on the dust collection box 9, and the indicator passes through the observation port, enabling the operator to directly see the dust accumulation situation in the dust collection box 9.

[0061] It should be noted that when dust accumulates in the dust collection box 9, the dust collection indicator 91 will display the current dust amount. The operator can monitor it in real time through the observation port and clean it when the dust reaches the set amount. The design of the observation port and the dust collection indicator 91 improves the visual management of the equipment, enabling the operator to timely understand the dust accumulation situation, perform necessary maintenance, and avoid equipment failures or efficiency reduction caused by excessive dust.

[0062] Embodiment 3:

[0063] As shown in the appendix Figure 2As shown, in this embodiment, the filter tube 6 and the matching filter screen holder 8 are both rectangular. In order to reduce the gap between the filter tube 6 and the filter screen holder 8, a groove 63 can be formed on the inner wall of the filter tube 6 to accommodate the filter screen holder 8, and there is a gap between the filter screen holder 8 and the bottom of the groove 63 to form a space for vibration and movement, and to prevent the filter screen holder 8 from detaching from the groove 63. On this basis, the four sides of the filter screen holder 8 are provided with bellows covers to isolate dust particles, further enhancing the filtering effect of the device.

[0064] The above embodiments are only used to illustrate the technical solutions of the present disclosure, rather than to limit them. Although the present disclosure has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. These modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present disclosure. The following points need to be noted: In the embodiment drawings of the present invention, only the structures related to the embodiments of the present invention are involved, and other structures can refer to the usual designs. Without conflict, the features in the same embodiment and different embodiments of the present invention can be combined with each other. The above is only an exemplary implementation manner of the present invention, rather than being used to limit the protection scope of the present invention. The protection scope of the present invention is determined by the appended claims.

Claims

1. A coal mine dust ventilation system, comprising a ventilation box (1), the ventilation box (1) being provided with an air inlet (2) and an air outlet (3), characterized in that: A cyclone separator and a filter tube (6) are provided inside the ventilation box (1); the air inlet pipe (4) of the cyclone separator is connected to the air inlet (2); the air outlet pipe (53) of the cyclone separator is connected to the filter tube (6); and the filter tube (6) is connected to the air outlet (3); Along the air flow direction of the air outlet (3), a filter frame (8) and a blade (7) are sequentially arranged in the filter tube (6); a rotating shaft (71) is connected to the shaft of the blade (7); a filter (84) is arranged on the filter frame (8); an opening is arranged at the center of the filter (84); a circular ring (83) matching the opening is arranged in the opening; and a boss (831) is arranged on the inner wall of the circular ring (83); A protrusion (711) is provided on the rotating shaft (71), and when the blade (7) rotates, the shaft of the blade (7) drives the rotating shaft (71) to rotate, thereby driving the protrusion (711) to intermittently touch and lift the boss (831), so that the filter (84) continuously vibrates; At the bottom of the filter tube (6), through holes (61) parallel to the filter screens (84) are respectively provided on both sides of each filter screen (84).

2. A coal mine dust ventilation system according to claim 1, characterized in that: The rotating shaft (71) is provided with a movable sealing ring (73) matching the rotating shaft (71), and a first accordion cover (85) connected to the circular ring (83) and the movable sealing ring (73) is provided between the circular ring (83) and the movable sealing ring (73) to prevent dust particles from passing through the hole of the circular ring (83).

3. A coal mine dust ventilation system according to claim 2, characterized in that: The inner wall of the filter tube (6) is provided with a groove (63) matching the contour of the filter frame (8), and a first spring (81) connecting the inner wall of the groove (63) and the filter frame (8) is provided in the groove (63); a second accordion cover (62) connected to the inner wall of the filter frame (8) and the filter tube (6) is provided around the periphery; when the first spring (81) is in an initial state, the filter frame (8) is in the groove (63) and there is a gap between each end surface of the filter frame (8) and the bottom of the groove (63), and the protrusion (711) can continuously touch and lift the boss (831).

4. A coal mine dust ventilation system according to claim 3, characterized in that: One end of the rotating shaft (71) is connected to the shaft of the blade (7), and the other end is connected to the bearing (72); the filter screens (84) are multiple in number, and the aperture of each filter screen (84) decreases in sequence along the air flow direction of the air outlet (3).

5. A coal mine dust ventilation system according to claim 4, characterized in that: The cyclone separator is cylindrical, and is provided with a spiral separation component (52) inside that matches the inner wall of the cyclone separator; along the dust falling direction, the diameter of the cyclone separator gradually decreases.

6. A coal mine dust ventilation system according to claim 5, characterized in that: The air outlet pipe (53) is divided into a vertical section and a horizontal section which are vertically connected to each other; the horizontal section of the air outlet pipe (53) is cylindrical, and the diameter of the horizontal section of the air outlet pipe (53) gradually decreases along the direction of airflow movement.

7. A coal mine dust ventilation system according to claim 6, characterized in that: A dust box (9) is provided at the bottom of the ventilation box (1), and a second spring (92) connecting the dust box (9) and the ventilation box (1) is provided below the dust box (9).

8. A coal mine dust ventilation system according to any one of claims 1 to 7, characterized in that: A spray mechanism is provided on the upper part of the ventilation box (1), a water tank (10) is provided on the top of the ventilation box (1), and a water pump (12) is provided in the water tank (10).

9. A coal mine dust ventilation system according to claim 8, characterized in that: The spray mechanism comprises spray heads (111) arranged in a straight line, and each spray head (111) is connected via a bracket (11).

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