Ventilation structure for underground coal mine

Abstract

The utility model belongs to the technical field of coal mine ventilation, and particularly relates to an underground coal mine ventilation structure which comprises a first air guide pipe. A first fan is mounted in the middle of the first air guide pipe; the end part of the first air guide pipe is communicated with an air inlet pipe; the end part of the air inlet pipe is communicated with a second air guide pipe; the bottom of the second air guide pipe is connected with a mooring rope; the bottom of the cable is connected with a third air guide pipe; the end part of the third air guide pipe is communicated with an air outlet pipe; the end part of the air outlet pipe is communicated with a fourth air guide pipe; a second fan is mounted in the middle of the fourth air guide pipe; the end part of the first air guide pipe is fixedly connected with a filter screen; the filter screen is spherical; and a third air guide pipe and an air outlet pipe which are attached to the ground are arranged in the mine hole, so that raised dust in the mine hole can be pumped out, and the influence of the raised dust in the mine hole on equipment is reduced while continuous fresh air in the mine hole is kept.

Description

Technical Field

[0001] The utility model belongs to the technical field of coal mine ventilation, in particular to an underground coal mine ventilation structure. Background Art

[0002] Underground coal mine ventilation equipment is primarily used to provide fresh air and remove harmful gases and dust to ensure a safe working environment. Ventilation equipment typically includes main fans and local fans. Main fans are typically installed above ground, forcing fresh air into underground tunnels through air ducts.

[0003] Ventilation equipment is also equipped with auxiliary facilities such as ventilation ducts and ventilation structures. Ventilation ducts are used to guide air flow to ensure that air can be accurately delivered to where it is needed.

[0004] The existing coal mine ventilation is to add fresh air from the outside into the coal mine. At this time, the air inside the coal mine is discharged from the mine. In this process, dust is easily raised due to the air flow, which causes dust accumulation on the construction equipment and causes jamming.

[0005] To this end, the utility model provides an underground coal mine ventilation structure. Utility Model Content

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problems is: an underground coal mine ventilation structure described in the present invention includes a first air duct; a first fan is installed in the middle of the first air duct; the end of the first air duct is connected to an air inlet duct; the end of the air inlet duct is connected to a second air duct; the bottom of the second air duct is connected to a cable; the bottom of the cable is connected to a third air duct; the end of the third air duct is connected to an air outlet duct; the end of the air outlet duct is connected to a fourth air duct; a second fan is installed in the middle of the fourth air duct; by arranging a third air duct and an air outlet duct that are attached to the ground inside the mine, dust inside the mine can be extracted, maintaining continuous fresh air inside the mine while reducing the impact of dust inside the mine on equipment.

[0008] Preferably, a filter is fixedly connected to the end of the first air duct; the filter is spherical; by providing a filter at the end of the first air duct, impurities and suspended matter in the outside air can be reduced from being sucked into the air inlet pipe during the process of the first air duct supplying air to the interior of the mine; this arrangement can ensure that sufficient air is supplied to the interior of the mine, while reducing the problem of impurities in the outside air entering the interior of the mine.

[0009] Preferably, a through hole is opened in the middle of the filter; a push rod is slidably connected to the middle of the through hole; a rubber plate is fixedly connected to the end of the push rod; the rubber plate is located inside the filter; a plurality of brushes are fixedly connected to the side wall of the rubber plate; by pulling the push rod outward, the push rod slides in the middle of the through hole, which can drive the rubber plate to move toward the through hole, and pull the rubber plate to the filter. The rubber plate is soft and can contact the inner wall of the filter. At this time, the brush passes through the mesh holes on the surface of the filter and extends to the outside of the mesh holes of the filter. In this way, the debris attached to the surface of the filter can be cleaned and cleared through the mesh holes of the filter to avoid affecting the air delivery.

[0010] Preferably, a protective frame is fixedly connected to the middle of the air outlet pipe; a plurality of springs are fixedly connected to the side walls of the protective frame; and a protective plate is fixedly connected to the end of the spring; during operation, dropped objects are inevitable in the mine, and the protective frame is fixed to the outside of the air outlet pipe, so as to protect the outside of the air outlet pipe, and at the same time serve as a support for the air outlet pipe to ensure the stability of the air outlet pipe. The spring and the protective plate together ensure that the air outlet pipe will not be hit by dropped objects and deformed, so as not to affect the output of air and dust, thereby avoiding equipment failure problems caused by dust.

[0011] Preferably, elastic rods are fixed between the protective frames that are close to each other; multiple elastic rods are provided between the protective frames; by providing elastic rods between the protective frames, the phenomenon of the air outlet pipe bending and the slow rate of dust and air output can be reduced. The protective frames and the elastic rods cooperate with each other to have a certain buffering effect on falling objects, and can ensure to the greatest extent that the air outlet pipe is not deformed or damaged.

[0012] Preferably, each side wall of the protective frame is fixedly connected to a desiccant box; a plurality of desiccant boxes are provided on the protective frame; the air in the mine is mostly humid, and the protective frame, spring, guard plate and elastic rod will be oxidized if they are in the mine for a long time. The provision of a desiccant box can extend the service life of these devices, supply oxygen to the mine for a long time, and remove waste gas and dust.

[0013] The beneficial effects of the utility model are as follows:

[0014] 1. The underground coal mine ventilation structure described in the utility model is equipped with a third air duct and an air outlet duct attached to the ground inside the mine, so that the dust inside the mine can be extracted, thereby maintaining continuous fresh air inside the mine and reducing the impact of the dust inside the mine on the equipment.

[0015] 2. The underground coal mine ventilation structure described in the utility model is fixed to the outside of the air outlet pipe through a protective frame, which can protect the outside of the air outlet pipe and at the same time serve as a support for the air outlet pipe to ensure the stability of the air outlet pipe. The spring and the guard plate together ensure that the air outlet pipe will not be hit by falling objects and deformed, so as not to affect the output of air and dust, thereby avoiding equipment failure problems caused by dust. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1 It is a three-dimensional diagram of the utility model;

[0018] Figure 2 This is a schematic diagram of the air inlet pipe of the utility model;

[0019] Figure 3 This is a schematic diagram of the matching structure of the filter screen on the air inlet pipe in the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the air outlet duct in the utility model;

[0021] Figure 5 It is a structural diagram of the protective frame in the utility model;

[0022] In the figure: 1. First air duct; 11. First fan; 12. Air inlet duct; 13. Second air duct; 14. Cable; 15. Third air duct; 16. Air outlet duct; 17. Fourth air duct; 18. Second fan; 2. Filter; 3. Through hole; 31. Push rod; 32. Rubber sheet; 33. Brush; 4. Protective frame; 41. Spring; 42. Guard plate; 5. Elastic rod; 6. Desiccant box. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0024] like Figure 1As shown, an underground coal mine ventilation structure described in an embodiment of the present invention includes a first air duct 1; a first fan 11 is installed in the middle of the first air duct 1; the end of the first air duct 1 is connected to an air inlet duct 12; the end of the air inlet duct 12 is connected to a second air duct 13; the bottom of the second air duct 13 is connected to a cable 14; the bottom of the cable 14 is connected to a third air duct 15; the end of the third air duct 15 is connected to an air outlet duct 16; the end of the air outlet duct 16 is connected to a fourth air duct 17; a second fan 18 is installed in the middle of the fourth air duct 17; when working, the first fan 11, the air inlet duct 12, the second air duct 13, the cable 14, the third air duct 15, the air outlet duct 16, the fourth air duct 17 and the second fan 18 are first installed to the required When the interior of a coal mine is to be ventilated, the air outlet duct 16 should be kept inside the mine, close to the bottom ground. Then the first air duct 1 should be placed outside the coal mine. Then the first fan 11 and the second fan 18 should be turned on. At this time, the first fan 11 can send the outside air into the mine through the first air duct 1, the air inlet duct 12 and the second air duct 13. At this time, because the dust inside the mine will descend in the air, the second fan 18 can be used to extract the air and dust inside the mine to the outside of the mine using the third air duct 15 close to the ground. By arranging the third air duct 15 and the air outlet duct 16 that are attached to the ground inside the mine, the dust inside the mine can be extracted, keeping the inside of the mine with continuous fresh air while reducing the impact of the dust inside the mine on the equipment.

[0025] As shown Figures 2 to 3 As shown, a filter screen 2 is fixedly connected to the end of the first air duct 1; the filter screen 2 is spherical; by providing a filter screen 2 at the end of the first air duct 1, impurities and suspended matter in the external air can be reduced from being sucked into the air inlet pipe 12 during the process of the first air duct 1 supplying air to the interior of the mine; this arrangement can ensure that sufficient air is supplied to the interior of the mine, while reducing the problem of impurities in the external air entering the interior of the mine.

[0026] like Figure 3 As shown, a through hole 3 is opened in the middle of the filter 2; a push rod 31 is slidably connected to the middle of the through hole 3; a rubber plate 32 is fixedly connected to the end of the push rod 31; the rubber plate 32 is located inside the filter 2; a plurality of brushes 33 are fixedly connected to the side wall of the rubber plate 32; by pulling the push rod 31 outward, the push rod 31 slides in the middle of the through hole 3, which can drive the rubber plate 32 to move toward the through hole 3, and pull the rubber plate 32 to the position where the filter 2 is located. The rubber plate 32 is soft and can contact the inner wall of the filter 2. At this time, the brush 33 passes through the mesh on the surface of the filter 2 and extends to the outside of the mesh of the filter 2, so that the debris attached to the surface of the filter 2 can be cleaned and passed through the mesh of the filter 2 to avoid affecting the air delivery.

[0027] like Figures 4 and 5 As shown, a protective frame 4 is fixedly connected to the middle of the air outlet pipe 16; a plurality of springs 41 are fixedly connected to the side walls of the protective frame 4; a protective plate 42 is fixedly connected to the end of the spring 41; during operation, dropped objects are inevitable in the mine, and the protective frame 4 is fixed to the outside of the air outlet pipe 16 to protect the outside of the air outlet pipe 16. At the same time, it serves as a support for the air outlet pipe 16 to ensure the stability of the air outlet pipe 16. The spring 41 and the protective plate 42 jointly ensure that the air outlet pipe 16 will not be hit by dropped objects and deformed, so as not to affect the output of air and dust, thereby avoiding equipment failure problems caused by dust.

[0028] like Figure 5 As shown, elastic rods 5 are fixed between the protective frames 4 that are close to each other; multiple elastic rods 5 are provided between the protective frames 4; by providing elastic rods 5 between the protective frames 4, the bending of the air outlet pipe 16 and the slow rate of output of dust and air can be reduced. The protective frames 4 and the elastic rods 5 cooperate with each other to have a certain buffering effect on falling objects, which can maximize the protection of the air outlet pipe 16 from deformation or damage.

[0029] like Figure 5 As shown, each side wall of the protective frame 4 is fixedly connected to a desiccant box 6; a plurality of the desiccant boxes 6 are provided on the protective frame 4; the air in the mine is mostly humid, and the protective frame 4, spring 41, guard plate 42 and elastic rod 5 will be oxidized if they are in the mine for a long time. The provision of the desiccant box 6 can extend the service life of these devices, supply oxygen to the mine for a long time, and remove waste gas and dust.

[0030] During operation, first install the first fan 11, the air inlet pipe 12, the second air duct 13, the cable 14, the third air duct 15, the air outlet pipe 16, the fourth air duct 17 and the second fan 18 to the interior of the coal mine that needs ventilation. At this time, the air outlet pipe 16 should be kept in the mine, close to the bottom ground. Then the first air duct 1 is placed outside the coal mine, and then the first fan 11 and the second fan 18 are turned on. At this time, the first fan 11 can send the outside air into the mine through the first air duct 1, the air inlet pipe 12 and the second air duct 13. At this time, the dust inside the mine will descend in the air, and then the air and dust inside the mine can be blown down by using the second fan 18. The third air duct 15 on the surface is drawn out to the outside of the mine; by providing a filter 2 at the end of the first air duct 1, impurities and suspended matter in the outside air can be reduced from being sucked into the air inlet pipe 12 during the process of the first air duct 1 supplying air to the inside of the mine; by pulling the top rod 31 outward, the top rod 31 slides in the middle of the through hole 3, which can drive the rubber plate 32 to move toward the through hole 3, and pull the rubber plate 32 to the filter 2. The rubber plate 32 is soft and can contact the inner wall of the filter 2. At this time, the brush 33 passes through the mesh on the surface of the filter 2 and extends to the outside of the mesh of the filter 2. In this way, the debris attached to the surface of the filter 2 can be cleaned and dredged through the mesh of the filter 2 to avoid affecting the air delivery. Dropped objects inevitably occur in mines. Protective frame 4, fixed to the outside of air outlet pipe 16, protects the exterior of air outlet pipe 16 and simultaneously supports and stabilizes it. Spring 41 and guard plate 42 work together to prevent air outlet pipe 16 from being struck by falling objects and deforming, thereby preventing air and dust output and equipment malfunctions caused by dust. The elastic rods 5 provided between protective frame 4 reduce the risk of air outlet pipe 16 bending, which can slow the rate of dust and air output. The protective frame 4 and elastic rods 5 work together to provide a buffering effect against dropped objects, minimizing deformation or damage to air outlet pipe 16. Mine air is often humid, and prolonged exposure to protective frame 4, spring 41, guard plate 42, and elastic rod 5 can lead to oxidation. The desiccant cartridge 6 extends the service life of these components, providing long-term oxygen supply to the mine and removing waste gas and dust.

[0031] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. An underground coal mine ventilation structure, characterized by: The invention comprises a first air duct (1); a first fan (11) is installed in the middle of the first air duct (1); the end of the first air duct (1) is connected to an air inlet duct (12); the end of the air inlet duct (12) is connected to a second air duct (13); the bottom of the second air duct (13) is connected to a cable (14); the bottom of the cable (14) is connected to a third air duct (15); the end of the third air duct (15) is connected to an air outlet duct (16); the end of the air outlet duct (16) is connected to a fourth air duct (17); and a second fan (18) is installed in the middle of the fourth air duct (17).

2. An underground coal mine ventilation structure according to claim 1, characterized in that: A filter screen (2) is fixedly connected to the end of the first air guide pipe (1); the filter screen (2) is spherical.

3. An underground coal mine ventilation structure according to claim 2, characterized in that: A through hole (3) is provided in the middle of the filter screen (2); a push rod (31) is slidably connected to the middle of the through hole (3); a rubber plate (32) is fixedly connected to the end of the push rod (31); the rubber plate (32) is located inside the filter screen (2); and a plurality of brushes (33) are fixedly connected to the side wall of the rubber plate (32).

4. The underground coal mine ventilation structure according to claim 3, characterized in that: A protective frame (4) is fixedly connected to the middle of the air outlet pipe (16); a plurality of springs (41) are fixedly connected to the side walls of the protective frame (4); and a guard plate (42) is fixedly connected to the end of the spring (41).

5. An underground coal mine ventilation structure according to claim 4, characterized in that: Elastic rods (5) are fixedly connected between the protective frames (4) that are close to each other; a plurality of the elastic rods (5) are provided between the protective frames (4).

6. An underground coal mine ventilation structure according to claim 5, characterized in that: A desiccant box (6) is fixedly connected to the side wall of each protection frame (4); a plurality of desiccant boxes (6) are provided on the protection frame (4).

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