A tornado-type air extraction filtration, purification, dehumidification and cooling system for mines

Abstract

The present invention discloses a tornado-extraction air filtration, purification, dehumidification, and cooling system for mining, which relates to the technical field of preventing and controlling dust, high temperature, and high humidity hazards in mines. The system includes a tornado-generating device, an air cooling and dehumidifying device, and a dust filtration and purification device. The tornado-generating device includes a forced-in ventilator, a vertical air duct, and a dust hood. The air cooling and dehumidifying device includes an ice water tank and an air drying box, which can first cool and then dehumidify the high-humidity and high-temperature dust-laden airflow drawn into the dust hood. The dust filtration and purification device includes a filter cartridge, an extraction ventilator, and an automatic pulse cleaning system. The present invention can cool, dehumidify, filter, and purify the high-temperature and high-humidity dust-laden air at the deep mine excavation face, reducing the incidence of heat damage in mines and miners' pneumoconiosis.

Description

Technical Field

[0001] The present invention relates to the technical field of preventing and controlling mine dust and high-temperature and high-humidity heat damage, and in particular to a tornado-exhaust air filtering, purification, dehumidification and cooling system for mines. Background Art

[0002] my country's energy structure remains dominated by coal, accounting for approximately 60%. Underground mining is the primary method of coal production in my country, accounting for over 90% of total coal production. With the advancement of modernization and increased emphasis on safety in production, my country's coal mine safety has significantly improved, with accident rates and fatalities declining year by year. In particular, the death rate per million tons of coal produced, a measure of coal production safety, is gradually narrowing the gap with advanced coal-producing countries. However, coal mining has also exposed serious dust pollution issues. With increasing mechanization and mining intensity, underground dust production has continued to increase, causing significant pollution to the working environment and posing serious risks to occupational health. In recent years, coal mine dust control and worker health have received increasing national attention. my country has the highest incidence of pneumoconiosis in the world, with over 60% of cases concentrated in the mining industry. Therefore, vigorously promoting the development of coal mine dust control and occupational disease prevention and control technologies is particularly urgent and necessary.

[0003] Furthermore, with the development of the mining industry, mine depths have gradually increased, and the degree of comprehensive mechanization has continued to rise. This has significantly increased the amount of heat dissipated into the underground air by geothermal energy and underground equipment, seriously worsening the working environment for employees. A medical survey of illnesses suffered by miners working in high-temperature environments revealed that dizziness accounted for 100%; blurred vision accounted for 58%; and headaches and fatigue accounted for 45%. In hot, humid, and strenuous physical labor environments, energy metabolism is greatly accelerated, heat production increases, and sweating is required. However, sweat output decreases, preventing heat dissipation and increasing the risk of heat illness.

[0004] A production environment with high dust, high temperature and high humidity will inevitably reduce labor productivity, so creating a good working environment is undoubtedly beneficial to the miners' labor capacity, and will also greatly improve labor productivity.

[0005] Therefore, given the above issues, efficiently collecting dust generated during tunneling and reducing heat damage at the tunnel face are urgent tasks. The mine-use tornado air extraction, filtration, purification, dehumidification and cooling system can effectively solve these problems, improving the miners' working environment and increasing production efficiency. Summary of the Invention

[0006] The present invention aims to solve the above problems in view of the current situation. The present invention provides a tornado extraction type air filtration, purification and dehumidification and cooling system for mining, which includes a tornado cyclone generating device, an air cooling and dehumidification device and a dust filtration and purification device.

[0007] The tornado cyclone generating device includes a pressure-in ventilator, vertical air ducts, and a dust collecting hood. The pressure-in ventilator presses clean air into the airflow through four vertical air ducts to form a cyclone. The cyclone forms an upward rotating tornado under the suction effect of the dust collecting hood.

[0008] The air cooling and dehumidifying device includes an ice water tank and an air drying box, which can cool and dehumidify the high-temperature, high-humidity, and dust-laden gas sucked in by the tornado cyclone generating device;

[0009] The dust filtration and purification device includes a filter cartridge, an exhaust fan, and an automatic pulse cleaning system. The filter cartridge filters and purifies the dust-laden airflow that has been cooled and dehumidified. The exhaust fan provides power for the suction effect of the dust hood, air cooling and dehumidification, and filter cartridge filtration and purification. The automatic pulse cleaning system automatically sprays pulse airflow when the filter cartridge resistance rises to a threshold value to remove dust from the filter cartridge and reduce the filter cartridge resistance.

[0010] Preferably, the tornado cyclone generating device is based on the tornado formation principle. The cooled, dehumidified and purified fresh air is sent into four vertical air ducts through a pressure-in ventilator. The air is blown out from the holes evenly arranged on the inner sides of the pipe walls of the four vertical air ducts, thereby forming a horizontal wind curtain perpendicular to the pipe walls. The wind curtain forms a cyclone at the lower part of the dust collecting hood. The cyclone forms an upward rotating tornado under the suction action of the dust collecting hood. The exhaust ventilator provides suction power for the dust collecting hood. The center of the tornado cyclone is the rotating upward airflow, which relies on the high-speed rotating upward airflow to form a pressure difference to suck in the mine dust around the excavation face.

[0011] Preferably, the four vertical air ducts in the tornado cyclone generating device are respectively installed vertically close to the wall of the excavation tunnel and symmetrically distributed in a square shape. The pressure-in ventilator sends an equal amount of wind to each vertical air duct through the pipeline to cool, dehumidify, filter and purify the gas. The upper end of each vertical air duct is open and the lower end is closed. Only equal-sized holes are evenly arranged on the inner side of the pipe wall. Horizontal wind perpendicular to the pipe wall is blown out from the holes to form a four-sided wind curtain, and then form a cyclone.

[0012] Preferably, the vertical air duct in the tornado cyclone generating device has a height of 1800 mm and an inner diameter of 180 mm. Ten circular holes are evenly arranged from top to bottom on the outside of the duct wall, and the centers of the circles are on the same straight line. The diameter of each circular hole is 50 mm.

[0013] Preferably, the filter material of the filter cartridge in the dust filtration and purification device is electret fiber, and the automatic pulse cleaning system automatically opens the electromagnetic pulse valve to spray the filter cartridge according to the pressure difference threshold set by the pressure sensors arranged at the top and bottom of the filter cartridge to remove the dust captured on the filter cartridge.

[0014] Preferably, the ice water tank in the air cooling and dehumidifying device allows the dust-laden gas sucked in by the tornado cyclone device to pass through a water tank containing an ice-water mixture to achieve air cooling. The ice water tank has a size of 1000*1000*1000mm. 3 There are symmetrical holes for ventilation on both sides 100mm away from the top, and the gas temperature after cooling is lower than 22℃.

[0015] Preferably, the air drying box in the air cooling and dehumidifying device dries the cooled gas to reduce the relative humidity of the air. The size and vent position of the air drying box are the same as those of the ice water tank, and the desiccant filled in the air drying box is montmorillonite.

[0016] Beneficial effects of the present invention:

[0017] (1) The advantage of the present invention is that compared with the poor dust collection effect of the traditional excavation face dust collector, the device can efficiently collect dust, purify the air, reduce the amount of dust inhaled by miners and the occurrence of pneumoconiosis, protect the life and health rights of workers, and ensure safe and green coal mining.

[0018] (2) The advantage of the present invention is that the structures in the system are all movable components that can be adjusted as the excavation face advances. The system occupies a small space and can improve the mining working environment in a confined space and improve the labor efficiency of miners.

[0019] (3) The advantage of the present invention is that the tornado exhaust type air filtration, purification and dehumidification cooling system for mines can realize the cooling, dehumidification and filtration purification of dust-laden air, effectively improve the high dust, high temperature and high humidity working environment of miners, avoid the occurrence of heatstroke, heat-related diseases and pneumoconiosis among miners, and improve work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a top view of the vertical air duct;

[0022] Figure 3 Side view of the vertical air duct.

[0023] The numbers or serial numbers in the figure represent the names of devices or parts:

[0024] 1-Dust hood; 2-Air drying oven; 3-Ice water tank; 4-Automatic pulse cleaning system; 5-Filter cartridge; 6-Exhaust fan; 7-Press-in fan; 8-Vertical air duct;

[0025] ①, ②, ③, ④ - serial numbers of vertical air ducts;

[0026] 8-1-Vertical air duct body; 8-2 Drilling; 8-3 Wind direction. DETAILED DESCRIPTION

[0027] The technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings in the embodiments of the present invention, but the present invention is not limited to the following embodiments. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments of the present invention without creative work shall fall within the scope of protection of the present invention.

[0028] A tornado extraction type air filtration, purification, dehumidification and cooling system for mining, comprising a tornado cyclone generating device, an air cooling and dehumidification device and a dust filtration and purification device;

[0029] The tornado generating device includes a pressure-in ventilator 7, a vertical air duct 8, and a dust collecting hood 1. The pressure-in ventilator 7 presses clean air flow through four vertical air ducts to form a cyclone. The cyclone forms an upward rotating tornado under the suction effect of the dust collecting hood 1.

[0030] The air cooling and dehumidifying device includes an ice water tank 2 and an air drying box 3, which can cool and dehumidify the high-temperature, high-humidity, dust-containing gas sucked in by the tornado cyclone generating device;

[0031] The dust filtering and purification device includes a filter cartridge 5, an exhaust fan 6, and an automatic pulse cleaning system 4. The filter cartridge 5 filters and purifies the dust-laden airflow that has been cooled and dehumidified. The exhaust fan 6 provides power for the suction effect of the dust hood 1, air cooling and dehumidification, and filtering and purification of the filter cartridge 5. The automatic pulse cleaning system 4 automatically sprays pulse airflow when the resistance of the filter cartridge 5 rises to a threshold value to remove dust from the filter cartridge and reduce the resistance of the filter cartridge.

[0032] The tornado cyclone generating device is based on the tornado formation principle. The cooled, dehumidified and purified fresh air is sent into four vertical air ducts 8 through the pressure-in ventilator 7. The air is blown out from the holes evenly arranged on the inner side of the pipe wall of the four vertical air ducts 8, thereby forming a horizontal wind curtain perpendicular to the pipe wall. The wind curtain forms a cyclone at the lower part of the dust collecting hood 1. The cyclone forms an upward rotating tornado under the suction action of the dust collecting hood 1. The exhaust ventilator 6 provides suction power for the dust collecting hood 1. The center of the tornado is the rotating upward airflow, which relies on the high-speed rotating upward airflow to form a pressure difference to suck in the mine dust around the excavation face.

[0033] The four vertical air ducts 8 in the tornado cyclone generating device are respectively installed vertically close to the wall of the excavation tunnel and symmetrically distributed in a square. The pressure-in ventilator 7 sends an equal amount of wind to each vertical air duct 8 through the pipeline to cool, dehumidify, filter and purify the gas. The upper end of each vertical air duct 8 is open and the lower end is closed. Only equal-sized holes are evenly arranged on the inner side of the pipe wall. Horizontal wind perpendicular to the pipe wall is blown out from the holes to form a four-sided wind curtain, and then form a cyclone.

[0034] The vertical air duct 8 in the tornado cyclone generating device has a height of 1800 mm and an inner diameter of 180 mm. Ten circular holes are evenly arranged from top to bottom on the outer side of the duct wall, and the centers of the circles are on the same straight line. The diameter of each circular hole is 50 mm.

[0035] The filter material of the filter cartridge 5 in the dust filtration and purification device is electret fiber. The automatic pulse cleaning system 4 automatically opens the electromagnetic pulse valve to spray the filter cartridge according to the pressure difference threshold set by the pressure sensors arranged at the top and bottom of the filter cartridge to remove the dust captured on the filter cartridge.

[0036] The ice water tank 2 in the air cooling and dehumidifying device allows the dust-laden gas sucked in by the tornado cyclone device to pass through a water tank containing an ice-water mixture to achieve air cooling. The ice water tank has a specification of 1000*1000*1000mm. 3 There are symmetrical holes for ventilation on both sides 100mm away from the top, and the gas temperature after cooling is lower than 22℃.

[0037] The air drying box 3 in the air cooling and dehumidifying device dries the cooled gas to reduce the relative humidity of the air. The size and ventilation position of the air drying box 3 are the same as those of the ice water tank 2. The desiccant filled in the air drying box 3 is montmorillonite.

[0038] The pressure-type blower delivers clean, dry fresh air through the duct from the top, delivering an equal amount of air to each vertical duct. The air flows out through openings in the duct walls, forming a horizontal air curtain perpendicular to the duct walls. This air curtain forms a cyclone beneath the dust hood, which, under the suction of the hood, forms an upward-spinning tornado. The exhaust-type ventilator provides the suction power for the hood. Because the tornado's center is a rotating, upward airflow, the internal pressure of the high-speed cyclone is lower than the atmospheric pressure surrounding the excavation face. This pressure differential draws dust generated around the excavation face into the hood. The dust-laden air then flows through the ducts, first into an ice water tank and then into a drying oven for cooling and dehumidification. After cooling and dehumidification, the dust-laden air enters the dust filtration and purification unit. Clean air flows out of the dust filtration and purification unit's outlet, powered by the exhaust-type ventilator. Finally, the dry, clean, and cool air is forced into the vertical ducts by the pressure-type ventilator 7, completing the cycle. This cycle will take away the hot and humid air containing dust and bring in clean, cool and dry fresh air.

[0039] like Figure 2 As shown, the tornado cyclone generator has four vertical air ducts symmetrically arranged. The airflow from the drilled holes of vertical air ducts ① and ③ is aligned, while the airflow from vertical air ducts ② and ④ is aligned, with the angle between the two lines being 90°. The air curtains flowing in four directions, driven by the suction force of the top dust collection hood, form an upward tornado.

[0040] like Figure 3 The figure shows a side view of the vertical air duct of the tornado generating device. The vertical air duct is approximately 1800mm high and has an inner diameter of approximately 180mm. Ten circular holes are evenly spaced from top to bottom on the exterior of the duct wall, with the centers of the circles aligned. Each hole has a diameter of 50mm. The air blown out from the holes is horizontal wind, perpendicular to the duct wall.

[0041] The size of the tornado cyclone wind volume can be achieved by adjusting the fan power. The lower part of each device is provided with a roller structure, which moves according to the forward advancement of the excavation face.

[0042] The above description of the disclosed embodiments will enable one skilled in the art to implement and use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein, but is to be construed in the widest possible manner consistent with the principles and novel features disclosed herein.

Claims

1. A tornado-type air filtration, purification, dehumidification and cooling system for mining, characterized in that: The system includes a tornado cyclone generating device, an air cooling and dehumidifying device, and a dust filtering and purification device; The tornado cyclone generating device comprises a pressure-in ventilator (7), a vertical air duct (8), and a dust collecting hood (1). The pressure-in ventilator (7) presses clean airflow through four vertical air ducts to form a cyclone. The cyclone forms an upward rotating tornado under the suction action of the dust collecting hood (1). The air cooling and dehumidifying device comprises an ice water tank (2) and an air drying box (3), and can cool and dehumidify the high-temperature, high-humidity, dust-containing gas sucked in by the tornado cyclone generating device; The dust filtering and purification device comprises a filter cartridge (5), an exhaust ventilator (6), and an automatic pulse dust cleaning system (4). The filter cartridge (5) filters and purifies the dust-laden airflow that has been cooled and dehumidified. The exhaust ventilator (6) provides power for the suction action of the dust collecting hood (1), air cooling and dehumidification, and filtering and purification of the filter cartridge (5). The automatic pulse dust cleaning system (4) automatically emits a pulse airflow when the resistance of the filter cartridge (5) rises to a threshold value, thereby removing dust from the filter cartridge and reducing the resistance of the filter cartridge.

2. The mine tornado extraction type air filtration, purification, dehumidification and cooling system according to claim 1 is characterized in that: The tornado cyclone generating device is based on the tornado formation principle. The fresh air after cooling, dehumidification and purification is sent into four vertical air ducts (8) through the pressure-in ventilator (7). The air is blown out from the holes evenly arranged on the inner side of the pipe wall of the four vertical air ducts (8), thereby forming a horizontal wind curtain perpendicular to the pipe wall. The wind curtain forms a cyclone at the lower part of the dust collecting hood (1). The cyclone forms an upward rotating tornado under the suction action of the dust collecting hood (1). The exhaust ventilator (6) provides the dust collecting hood (1) with suction power. The center of the tornado cyclone is the rotating upward airflow. The mine dust around the excavation face is sucked by the pressure difference formed by the high-speed rotating upward airflow.

3. The mine tornado extraction type air filtration, purification, dehumidification and cooling system according to claim 1 is characterized in that: The four vertical air ducts (8) in the tornado cyclone generating device are respectively installed vertically close to the tunnel wall and symmetrically distributed in a square shape. The pressure-in ventilator (7) sends the cooled, dehumidified, filtered and purified gas to each vertical air duct (8) through the pipeline with an equal amount of wind. The upper end of each vertical air duct (8) is open and the lower end is closed. Only holes of equal size are evenly arranged on the inner side of the pipe wall. The horizontal wind perpendicular to the pipe wall is blown out from the holes to form a four-sided wind curtain, thereby forming a cyclone.

4. The mine tornado extraction type air filtration, purification, dehumidification and cooling system according to claim 1 is characterized in that: The vertical air duct (8) in the tornado cyclone generating device has a height of 1800 mm and an inner diameter of 180 mm. Ten circular holes are evenly arranged from top to bottom on the outer side of the duct wall, and the centers of the circles are on the same straight line. The diameter of each circular hole is 50 mm.

5. The tornado-type air filtration, purification, dehumidification and cooling system for mining according to claim 1 is characterized in that: The filter material of the filter cartridge (5) in the dust filtration and purification device is electret fiber, and the automatic pulse cleaning system (4) automatically opens the electromagnetic pulse valve to spray the filter cartridge according to the pressure difference threshold set by the pressure sensors arranged at the top and bottom of the filter cartridge to remove the dust captured on the filter cartridge.

6. The tornado-type air filtration, purification, dehumidification and cooling system for mining according to claim 1 is characterized in that: The ice water tank (2) in the air cooling and dehumidifying device allows the dust-laden gas sucked in by the tornado cyclone device to pass through a water tank containing an ice-water mixture to achieve air cooling. The ice water tank has a specification of 1000*1000*1000mm. 3 There are symmetrical holes for ventilation on both sides 100mm away from the top, and the gas temperature after cooling is lower than 22℃.

7. The tornado-type air filtration, purification, dehumidification and cooling system for mining according to claim 1 is characterized in that: The air drying box (3) in the air cooling and dehumidifying device dries the cooled gas to reduce the relative humidity of the air. The size and position of the ventilation opening of the air drying box (3) are the same as those of the ice water tank (2). The desiccant filled in the air drying box (3) is montmorillonite.

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