Coal mine underground ventilation device

Abstract

The utility model relates to the technical field of ventilation equipment, in particular to an underground coal mine ventilation device. The underground coal mine ventilation device comprises an air duct, a scraping plate, a fine filter drum, a transmission mechanism, a cleaning brush, a blow-off pipe, a collecting box, a rotating valve and a driving assembly, a supporting frame is installed at the bottom of the air duct, fan blades are arranged in the air duct at equal intervals, a fan cover is installed at the air inlet end of the air duct, and the bottom of the air duct communicates with an air conveying pipe. According to the underground ventilation device for the coal mine, the fine filter cylinder and the transmission mechanism are arranged to drive the fine filter cylinder to rotate, so that fine particulate matters in the air are dynamically intercepted. According to the design, not only is the filtering efficiency improved, but also dust and fine particles are effectively prevented from being accumulated in the fine filter cartridge, so that continuous and efficient operation of the ventilation device is guaranteed, intercepted particles can be uniformly distributed through rotation of the fine filter cartridge, the risk of local blockage is reduced, and the ventilation efficiency is further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to ventilation equipment technical field especially relates to a coal mine underground ventilation device. BACKGROUND

[0002] In the coal mining operation, it is essential to provide continuous, fresh and safe air for underground, and the coal mine underground ventilation device as the key equipment to achieve this goal, its performance and reliability are directly related to the safety and efficiency of mine operation, however, the traditional coal mine underground ventilation device has some inherent defects in design, especially in dealing with complex and changeable external environment, it is not up to the task;

[0003] Firstly, the ventilation device is mostly installed in the outdoor environment near the coal mine, these areas often contain coal dust and various sundries, especially in windy weather conditions, the content of dust and sundries in the air will increase significantly, if these dust and sundries are sucked into the ventilation device, not only the underground air will be seriously polluted, but also the internal components of the ventilation equipment may be worn and clogged, thereby affecting the ventilation effect and equipment life, although the traditional ventilation device has filtering function, but mostly adopts fixed filtering mode in design, this filtering mode can intercept dust in the air to a certain extent, but long-term operation, the fixed filter is easy to accumulate a large amount of dust and fine particles inside, leading to increased ventilation resistance, reduced ventilation efficiency, and even may cause ventilation failure, which poses a threat to mine operation safety;

[0004] In addition, since the fixed filter is easy to accumulate dust during use, it needs to be cleaned and maintained frequently, which not only increases the labor intensity and workload of the staff, but also may cause the performance of the ventilation device to decline due to cleaning not in time or not thoroughly, at the same time, there may be safety risks in the process of manual cleaning, such as improper operation may cause equipment damage or personnel injury accident.

[0005] Therefore, it is necessary to provide a new coal mine underground ventilation device to solve the above technical problems. CONTENT OF THE UTILITY MODEL

[0006] To solve the above technical problems, the utility model provides a coal mine underground ventilation device.

[0007] The coal mine underground ventilation device provided by the utility model comprises a wind cylinder, a scraper, a fine filter cylinder, a transmission mechanism, a cleaning brush, a blow-off pipe, a collecting box, a rotary valve and a driving assembly, the bottom of the wind cylinder is provided with a support frame, equidistant fan blades are arranged in the wind cylinder, a wind cover is arranged at one end of the wind cylinder, the bottom of the wind cylinder is communicated with a wind conveying pipe, equidistant scrapers are arranged on one side of the wind cover, the scrapers are used for scraping off large foreign matters intercepted on the surface of the wind cover, a fine filter cylinder is arranged on the top of the wind conveying pipe in the wind cylinder, a transmission mechanism is arranged between the wind cylinder and the fine filter cylinder, the transmission mechanism drives the fine filter cylinder to rotate and is used for intercepting dust and fine particles entering the wind conveying pipe, the inside of the fine filter cylinder is provided with the cleaning brush, the outer wall of the cleaning brush is provided with wear-resistant bristles, and the wear-resistant bristles are attached to the inner wall of the fine filter cylinder, the two sides of the wind cylinder are communicated with the blow-off pipe, the top of the support frame is provided with the collecting box, the top of the collecting box is communicated with the bottom of the two blow-off pipes, the inside of the two blow-off pipes is provided with the rotary valve, the driving assembly is arranged between the cleaning brush and the rotary valve, the driving assembly drives the cleaning brush to clean the inside of the fine filter cylinder and drives the rotary valve to open and blow off at the same time.

[0008] Preferably, the transmission mechanism comprises a motor, a rotating shaft and a connecting rod, the inside of the wind cylinder is fixedly connected with the motor, the output end of the motor is fixedly connected with the rotating shaft, one end of the rotating shaft close to the motor is fixedly connected with a driving pulley, the inner wall of the wind cylinder is rotatably connected with the connecting rod, one end of the connecting rod is fixedly connected with a driven pulley, the driving pulley and the driven pulley are drivingly connected through a belt, the other end of the connecting rod is fixedly connected with a gear, the inner wall of the fine filter cylinder is fixedly connected with an internal gear ring, and the gear is meshingly connected with the internal gear ring.

[0009] Preferably, the driving assembly comprises a hydraulic push rod and a connecting rod, the other end of the wind cylinder is fixedly connected with the hydraulic push rod, the output end of the hydraulic push rod is fixedly connected with the connecting rod, and one end of the connecting rod is fixedly connected with the cleaning brush.

[0010] Preferably, the bottom of the connecting rod is fixedly connected with a rack, the middle part of the rack is meshingly connected with a sector gear, the inside of the wind cylinder is rotatably connected with a rotating rod, the middle part of the rotating rod is fixedly connected with the sector gear, and the two ends of the rotating rod are fixedly connected with corresponding rotary valves.

[0011] Preferably, the rack moves under the action of the connecting rod and drives the sector gear to rotate by 90 degrees.

[0012] Preferably, the collecting box is communicated with an exhaust pipe on one side, and the inside of the exhaust pipe is provided with filter cloth.

[0013] Preferably, the middle part of the rotating shaft is fixedly connected with the plurality of fan blades, the end of the rotating shaft away from the motor is fixedly connected with the plurality of scrapers, and the scrapers are designed in the shape of a right-angled triangle.

[0014] Compared with the related art, the coal mine underground ventilation device has the following beneficial effects:

[0015] High-efficiency filtration and dynamic interception:

[0016] By setting a fine filter cartridge and driving its rotation through a transmission mechanism, dynamic interception of fine particulate matter in the air is achieved. This design not only improves filtration efficiency, but also effectively prevents the accumulation of dust and fine particulate matter inside the fine filter cartridge, ensuring the sustained and efficient operation of the ventilation device;

[0017] The rotation of the fine filter cartridge also uniformly distributes the intercepted particulate matter, reducing the risk of local blockage and further improving ventilation efficiency;

[0018] Automatic cleaning and maintenance:

[0019] The introduction of a driving assembly enables the automatic movement of a cleaning brush, allowing regular cleaning of the inside of the fine filter cartridge without frequent manual intervention. The wear-resistant bristles of the cleaning brush closely fit the inner wall of the fine filter cartridge, ensuring cleaning effectiveness and reducing the problem of performance degradation caused by incomplete cleaning;

[0020] Through the meshing design of the rack and the sector teeth, automatic opening and closing of the rotary valve is achieved, simplifying the pollution discharge process and improving the pollution discharge efficiency;

[0021] Anti-clogging and enhanced reliability:

[0022] The design of the wind cover effectively intercepts large foreign matter in the air, preventing it from entering the ventilation system and causing blockage or damage. The scraper rotates with the shaft and uses the inclined surface design of the right triangle to throw away large foreign matter, further reducing the risk of blockage;

[0023] Environmental protection and energy saving:

[0024] The filter cloth inside the exhaust pipe connected to one side of the collection box can intercept the discharged dust and fine particulate matter, ensuring that the air discharged to the outside is clean and meeting environmental protection requirements. The design of high-efficiency filtration and dynamic interception reduces ventilation resistance and improves ventilation efficiency, thereby reducing energy consumption to a certain extent and achieving energy-saving effect. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 The structure diagram of the coal mine ventilation device is provided;

[0026] Figure 2 The structure diagram of the collection box is shown in Figure 1

[0027] Figure 3 The structure diagram of the wind tube section is shown in Figure 1

[0028] Figure 4 ​​​Figure 3 Structure schematic view of the exhaust pipe section shown in the figure;

[0029] Figure 5 For Figure 4 Structure schematic view of the driving assembly shown in the figure.

[0030] Reference numerals in the figure: 1, air duct; 101, support frame; 2, fan blade; 3, air cover; 4, air conveying pipe; 5, scraper; 6, fine filter cylinder; 7, cleaning brush; 8, exhaust pipe; 9, collecting box; 10, rotary valve; 11, motor; 12, rotating shaft; 13, connecting rod; 14, driving pulley; 15, driven pulley; 16, gear; 17, inner tooth ring; 18, hydraulic push rod; 19, connecting rod; 20, rack; 21, fan-shaped tooth; 22, rotating rod; 23, exhaust pipe. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the following will be further described in detail by combining with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model, and are not used to limit the utility model.

[0032] The specific implementation of the utility model will be described in detail by combining with specific examples.

[0033] Please refer to Figures 1 to 5The utility model provides a coal mine underground ventilation device, the coal mine underground ventilation device includes: wind tube 1, scraper 5, fine filter cylinder 6, transmission mechanism, cleaning brush 7, blow -off pipe 8, collection box 9, rotary valve 10 and drive assembly, the bottom of wind tube 1 is installed with support frame 101, the inside of wind tube 1 is equipped with fan blade 2 at equal intervals, and one end of wind tube 1 is installed with wind scoop 3, and the bottom of wind tube 1 is communicated with wind delivery pipe 4, one side of wind scoop 3 is equipped with scraper 5 at equal intervals, and scraper 5 is used to scrape the large block foreign matter intercepted on the surface of wind scoop 3, and the inside of wind tube 1 is installed with fine filter cylinder 6 near the top of wind delivery pipe 4, and transmission mechanism is installed between wind tube 1 and fine filter cylinder 6, and transmission mechanism drives fine filter cylinder 6 to rotate for intercepting dust and fine particles entering wind delivery pipe 4, cleaning brush 7 is arranged in fine filter cylinder 6, wear-resistant bristles are arranged on the outer wall of cleaning brush 7, and the inner wall of fine filter cylinder 6 is attached, and the both sides of wind tube 1 are communicated with blow -off pipe 8, and collection box 9 is installed at the top of support frame 101, and the top of collection box 9 is communicated with the bottom end of two blow -off pipe 8, and rotary valve 10 is installed in the inside of two blow -off pipe 8, and drive assembly is installed between cleaning brush 7 and rotary valve 10, and drive assembly drives cleaning brush 7 to clean the inside of fine filter cylinder 6 and drives rotary valve 10 to open and discharge at the same time, transmission mechanism includes: motor 11, shaft 12 and connecting rod 13, and the inside of wind tube 1 is fixedly connected with motor 11, the output end of motor 11 is fixedly connected with shaft 12, one end of shaft 12 close to motor 11 is fixedly connected with driving pulley 14, the inner wall of wind tube 1 is rotatably connected with connecting rod 13, one end of connecting rod 13 is fixedly connected with driven pulley 15, driving pulley 14 and driven pulley 15 are drivenly connected through belt, the other end of connecting rod 13 is fixedly connected with gear 16, the inner wall of fine filter cylinder 6 is fixedly connected with inner tooth ring 17, gear 16 is meshedly connected with inner tooth ring 17, a plurality of fan blade 2 are fixedly connected with the middle part of shaft 12, a plurality of scraper 5 are fixedly connected with the end of shaft 12 away from motor 11, and scraper 5 is designed as a right triangle.

[0034] It should be noted that: when the coal mine needs ventilation, first start the motor 11, the output end of the motor 11 drives the fan blade 2 to rotate through the rotating shaft 12, the rotation of the fan blade 2 generates suction, which introduces external air into the air duct 1, when the air enters the air duct 1, it first passes through the fan cover 3, which can intercept large foreign matter in the air to prevent it from entering the inside of the ventilation system, at the same time, the scraper 5 fixedly connected to the end of the rotating shaft 12 away from the motor 11 rotates with the rotating shaft 12, the scraper 5 is designed in the shape of a right triangle, and the inclined surface helps to throw away the large foreign matter intercepted by the fan cover 3, avoiding blockage affecting the ventilation effect, the driving pulley 14 fixedly connected to the end of the rotating shaft 12 close to the motor 11 rotates with the rotating shaft 12, the driving pulley 14 is connected to the driven pulley 15 through a belt drive, the driven pulley 15 drives the connecting rod 13 to rotate, the other end of the connecting rod 13 is fixedly connected with the gear 16, and the inner tooth ring 17 fixedly connected to the inner wall of the fine filter cylinder 6 is engaged, so that the fine filter cylinder 6 rotates under the drive of the connecting rod 13, the rotation of the fine filter cylinder 6 realizes dynamic interception of fine particles in the air, improves the filtering efficiency, avoids dust and fine particles from accumulating in the fine filter cylinder 6 to affect the ventilation efficiency, and the air filtered by the fine filter cylinder 6 is conveyed to each ventilation pipe in the coal mine through the air conveying pipe 4, providing continuous, fresh and safe air for the underground mine.

[0035] Please refer to Figure 2 、 Figure 4 and Figure 5 , the driving assembly comprises: a hydraulic push rod 18 and a connecting rod 19, the other end of the air duct 1 is fixedly connected with the hydraulic push rod 18, the output end of the hydraulic push rod 18 is fixedly connected with the connecting rod 19, one end of the connecting rod 19 is fixedly connected with the cleaning brush 7, the bottom of the connecting rod 19 is fixedly connected with the rack 20, the middle part of the rack 20 is engaged with the sector gear 21, the inside of the air duct 1 is rotatably connected with the rotating rod 22, the middle part of the rotating rod 22 is fixedly connected with the sector gear 21, both ends of the rotating rod 22 are fixedly connected with the corresponding rotating valve 10, the rack 20 moves to drive the sector gear 21 to rotate by 90 degrees under the action of the connecting rod 19, one side of the collecting box 9 is communicated with the exhaust pipe 23, and the inside of the exhaust pipe 23 is provided with filter cloth.

[0036] It should be noted that: the starting period of the hydraulic push rod 18 is set through the control system, when the set starting period is reached, the control system sends instructions to the hydraulic pump to drive the hydraulic pump to work, and the piston moves outward to drive the push rod to move linearly, when a working period is completed, the control system sends instructions to stop the motor from working, and the hydraulic push rod 18 slowly resets under the action of the hydraulic oil, waiting for the arrival of the next starting period.

[0037] The collecting box 9 collects the dust and fine particles discharged from the blowdown pipe 8 inside, and the collected dust and fine particles are collected and treated by the staff after the ventilation device runs for a period of time.

[0038] The working principle of the coal mine underground ventilation device is as follows:

[0039] Starting and preliminary ventilation:

[0040] When the coal mine needs ventilation, the motor 11 is started first, the output end of the motor 11 drives the fan blade 2 to rotate through the rotating shaft 12, and the rotation of the fan blade 2 generates suction to introduce external air into the air duct 1;

[0041] When the air enters the air duct 1, it first passes through the air baffle 3, which can intercept large foreign matters in the air to prevent them from entering the inside of the ventilation system. At the same time, the scraper 5 fixedly connected to the end of the rotating shaft 12 away from the motor 11 rotates with the rotating shaft 12, and the scraper 5 is designed in a right triangle, and the inclined surface thereof helps to throw away the large foreign matters intercepted by the air baffle 3, so as to avoid blockage and affect the ventilation effect;

[0042] Dynamic interception of small particles:

[0043] The driving pulley 14 fixedly connected to the end of the rotating shaft 12 close to the motor 11 rotates with the rotating shaft 12, the driving pulley 14 is drivingly connected to the driven pulley 15 through a belt, the driven pulley 15 drives the connecting rod 13 to rotate, and the gear 16 fixedly connected to the other end of the connecting rod 13 is engaged with the inner tooth ring 17 fixedly connected to the inner wall of the fine filter cylinder 6, so that the fine filter cylinder 6 rotates under the driving of the connecting rod 13.

[0044] The rotation of the fine filter cylinder 6 realizes dynamic interception of small particles in the air, improves the filtration efficiency, and avoids accumulation of dust and small particles in the fine filter cylinder 6 to affect the ventilation efficiency.

[0045] Air conveying:

[0046] The air filtered by the fine filter cylinder 6 is conveyed to each ventilation pipe in the coal mine through the air conveying pipe 4 to provide continuous, fresh and safe air for the underground mine;

[0047] Automatic cleaning and pollution discharge:

[0048] After running for a period of time, according to the preset period, the hydraulic push rod 18 is started, the output end of the hydraulic push rod 18 pushes the connecting rod 19 to move forward, and the rack 20 at the bottom of the connecting rod 19 also moves, the rack 20 is engaged with the sector tooth 21, and when the rack 20 moves forward, the sector tooth 21 rotates by 90 degrees.

[0049] The rotation of the sector tooth 21 drives the two rotating valves 10 at the ends thereof to be opened through the rotating rod 22, so as to allow pollution discharge, and then the hydraulic push rod 18 continues to push the cleaning brush 7 to move back and forth in the fine filter cylinder 6 through the connecting rod 19, the wear-resistant bristles arranged on the outer wall of the cleaning brush 7 are tightly attached to the inner wall of the fine filter cylinder 6, and dust and small particles intercepted are effectively removed.

[0050] The removed dust and fine particles are discharged into the collection box 9 through the drain pipe 8. The exhaust pipe 23 connected to one side of the collection box 9 is equipped with a filter cloth, which can intercept the discharged dust and fine particles to ensure that the air discharged to the outside is clean.

[0051] Reset and wait for the next cleaning command:

[0052] When the preset cleaning time ends, the hydraulic push rod 18 retracts, and the cleaning brush 7 is reset through the connecting rod 19. At the same time, the rack 20 at the bottom of the connecting rod 19 drives the fan-shaped tooth 21 to rotate 90 degrees in the opposite direction, closing the rotary valve 10 of the drain pipe 8.

[0053] At this point, the hydraulic push rod 18 returns to its initial state, awaiting the next cleaning command.

[0054] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A ventilation device for underground coal mines, characterized in that, include: The air duct (1) has a support frame (101) installed at the bottom. Fan blades (2) are evenly spaced inside the air duct (1). A hood (3) is installed at the air inlet end of the air duct (1). An air supply pipe (4) is connected to the bottom of the air duct (1). Scraper (5), scraper (5) is provided at equal intervals on one side of the wind cover (3), scraper (5) is used to scrape off large foreign objects intercepted on the surface of the wind cover (3); Fine filter cartridge (6) is installed inside the air duct (1) near the top of the air supply pipe (4). A transmission mechanism is installed between the air duct (1) and the fine filter cartridge (6). The transmission mechanism drives the fine filter cartridge (6) to rotate to intercept dust and fine particles entering the air duct (4). Cleaning brush (7): The inside of the fine filter cartridge (6) is provided with a cleaning brush (7), and the outer wall of the cleaning brush (7) is provided with wear-resistant bristles and is in contact with the inner wall of the fine filter cartridge (6); Sewage pipe (8) is connected to both sides of the ventilation duct (1); The collection box (9) is installed on the top of the support frame (101), and the top of the collection box (9) is connected to the bottom end of the two drain pipes (8); Rotary valve (10) is installed inside both of the drain pipes (8); A drive assembly is installed between the cleaning brush (7) and the rotary valve (10). The drive assembly drives the cleaning brush (7) to clean the inside of the fine filter cartridge (6) while simultaneously opening the rotary valve (10) to discharge sewage.

2. The underground ventilation device for coal mines according to claim 1, characterized in that, The transmission mechanism includes a motor (11), a rotating shaft (12), and a connecting rod (13). The motor (11) is fixedly connected inside the air duct (1). The rotating shaft (12) is fixedly connected to the output end of the motor (11). The driving pulley (14) is fixedly connected to the end of the rotating shaft (12) near the motor (11). The connecting rod (13) is rotatably connected to the inner wall of the air duct (1). The driven pulley (15) is fixedly connected to one end of the connecting rod (13). The driving pulley (14) and the driven pulley (15) are connected by belt drive. The gear (16) is fixedly connected to the other end of the connecting rod (13). The internal gear ring (17) is fixedly connected to the inner wall of the fine filter cylinder (6). The gear (16) meshes with the internal gear ring (17).

3. The underground ventilation device for coal mines according to claim 1, characterized in that, The drive assembly includes a hydraulic push rod (18) and a connecting rod (19). The other end of the air duct (1) is fixedly connected to the hydraulic push rod (18), and the output end of the hydraulic push rod (18) is fixedly connected to the connecting rod (19). One end of the connecting rod (19) is fixedly connected to the cleaning brush (7).

4. The underground ventilation device for coal mines according to claim 3, characterized in that, A rack (20) is fixedly connected to the bottom of the connecting rod (19), and a sector tooth (21) is meshed in the middle of the rack (20). A rotating rod (22) is rotatably connected inside the air duct (1). The middle of the rotating rod (22) is fixedly connected to the sector tooth (21), and both ends of the rotating rod (22) are fixedly connected to the corresponding rotating valve (10).

5. The underground ventilation device for coal mines according to claim 4, characterized in that, The rack (20) moves under the action of the connecting rod (19), causing the sector tooth (21) to rotate by 90 degrees.

6. The underground ventilation device for coal mines according to claim 1, characterized in that, The collection box (9) is connected to an exhaust pipe (23) on one side, and the exhaust pipe (23) is equipped with a filter cloth inside.

7. The underground ventilation device for coal mines according to claim 1, characterized in that, Several fan blades (2) are fixedly connected to the middle of the rotating shaft (12), and several scrapers (5) are fixedly connected to the end of the rotating shaft (12) away from the motor (11). The scrapers (5) are designed in a right-angled triangle.

Images