Underground ventilation and dust reduction device suitable for coal mining projects

Abstract

The invention discloses an underground ventilation and dust reduction device suitable for coal mining projects, which belongs to the technical field of ventilation and dust reduction for coal mining. The dust removal mechanism in the invention adopts a working mode of mainly dust removal and ventilation, and supplemented by spray atomization. When working, a plurality of dust suction components arranged on the dust removal pipe are used to perform multi-point suction on the dust in the tunnel, and the plurality of dust suction components can rotate in a circle, adjust the suction direction in all directions, and expand the dust suction range. The dust sucked into the dust removal pipe by the plurality of dust suction components is independently filtered by a plurality of filter structures to improve the dust removal effect. While removing dust, the ventilation pipe is used to introduce outside air to the top of the tunnel, and the outside air is ventilated from top to bottom. In addition, the water inlet pipe matched with the atomizing nozzle passes through the plurality of filter structures from bottom to top, which is beneficial to cooling the filtered air while realizing the top atomization effect, so that the air discharged out of the mine meets the dust removal and cooling standard.

Description

Technical Field

[0001] The invention relates to the technical field of ventilation and dust reduction in coal mining, and more specifically to an underground ventilation and dust reduction device suitable for coal mining engineering. Background Art

[0002] During the construction and production process of mines, due to the limited diffusion conditions of the mining face, the dust generated by mining operations poses a great threat to humans. Inhalation of fine dust particles can cause certain harm to the human body. In severe cases, pneumoconiosis can occur. Explosions can occur under high temperature and high pressure conditions, and discharge into the atmosphere can cause certain pollution to the environment.

[0003] During the mining process of traditional mines, a ventilation system is usually arranged underground. In the current existing technology, ventilation of mines is mostly carried out through an integrated ventilation duct, which extends from the mine's comprehensive excavation work to the outside of the mine, and is carried out in conjunction with a fan for ventilation. During this ventilation process, dust in the air is extracted along with the airflow. Dust is easy to adhere to the pipe during the long path flow, causing pipe blockage.

[0004] In order to reduce the dust content in the air discharged outside the mine, it is currently more common to use spraying for dust removal. This dust removal method will produce a large amount of wastewater in situations with heavy loads and more dust particles. Moreover, due to the heavy load of spray dust removal, a large amount of water flow is required during spraying, resulting in a large amount of wastewater. In addition, it is difficult to effectively remove particles in the airflow by relying solely on spraying, resulting in poor dust removal effect. When these dusts are discharged or circulated for ventilation, the environment in the mine will deteriorate, which has certain disadvantages.

[0005] To this end, we propose an underground ventilation and dust reduction device suitable for coal mining projects to address the above problems. Summary of the invention

[0006] The purpose of the present invention is to solve the existing practical problems. Compared with the existing technology, it provides an underground ventilation and dust reduction device suitable for coal mining projects. The working mode is mainly dust removal and ventilation, and auxiliary spray atomization. When working, multiple groups of dust suction components arranged on the dust removal pipe are used to perform multi-point suction of the dust in the tunnel, and the multiple groups of dust suction components can rotate in a circle, adjust the suction direction in all directions, and expand the dust suction range. The dust drawn into the dust removal pipe by multiple dust suction components is independently filtered through multiple filtering structures to improve the dust removal effect. While removing dust, the ventilation pipe is used to introduce outside air to the top of the tunnel. In addition, the water inlet pipe matched with the atomizing nozzle passes through multiple filtering structures from bottom to top, which not only realizes the top atomization effect, but also helps to cool the filtered air.

[0007] The purpose of the present invention can be achieved by the following technical scheme: an underground ventilation and dust reduction device suitable for coal mining engineering, comprising a vertically arranged vertical pipe and a horizontal pipe, a plurality of dust removal mechanisms are arranged at the bottom end of the horizontal pipe, the dust removal mechanism comprises a walking seat, a dust removal pipe connected to the horizontal pipe is fixedly connected to the upper end of the walking seat, a plurality of dust suction components are rotatably installed on the dust removal pipe in the vertical direction through a driving structure, the dust suction component comprises an annular sleeve rotating on the dust removal pipe and having an opening at one end, a dust suction nozzle with a dust suction fan is connected at the opening, and a plurality of dust inlets connected to the dust suction nozzle are arranged on the outer end wall of the dust removal pipe;

[0008] Multiple groups of filter structures are fixedly installed inside the dust removal pipe, one by one, located above multiple dust collection components. The filter structure includes an exhaust sleeve and a connecting sleeve fixed inside the dust removal pipe and distributed up and down. A filter space is formed between the exhaust sleeve and the connecting sleeve. An inner filter screen and an outer filter screen connected inside and outside are installed in the filter space. Multiple air guide pipes connected to the exhaust sleeve are distributed at the outer end of the dust removal pipe. The outer ends of the multiple air guide pipes are externally connected to exhaust pipes installed on the horizontal pipe.

[0009] A ventilation pipe extending to the outside of the vertical pipe is inserted at the top of the dust removal pipe, and a water inlet pipe is installed at the bottom of the ventilation pipe, which penetrates the exhaust sleeve, the inner filter screen, the connecting sleeve in sequence and extends to the outside of the walking seat. The ventilation pipe is fixedly connected to an injection nozzle penetrating to the outside of the dust removal pipe at one end close to the water inlet pipe, and a connecting pipe connected to the water inlet pipe is fixedly connected to the top of the water inlet pipe. A plurality of atomizing nozzles connected to the connecting pipe are distributed in a ring on the outside of the top of the dust removal pipe.

[0010] Furthermore, the vertical pipe and the horizontal pipe are connected by a plurality of rigid pipes and telescopic pipes arranged in an alternating manner, and the dust removal pipe is fixedly connected to the rigid pipe of the horizontal pipe. The vertical pipe and the horizontal pipe are arranged to be telescopic so that the length can be adjusted according to the actual tunnel. The horizontal pipe is installed at the top of the mine's comprehensive excavation working tunnel, and the dust removal pipe is vertically downward. According to actual needs, the dust collection distribution position of the plurality of dust removal pipes is adjusted by relying on the walking seat. Compared with the fixed installation, the flexibility of dust removal and ventilation in the tunnel is effectively improved.

[0011] Furthermore, the upper and lower ends of the annular sleeve are fixedly connected with a rotating ring with an inwardly expanded diameter, and the end walls of the dust removal pipe located above and below the dust inlet are provided with annular grooves for rotatably embedding and installing the rotating ring.

[0012] Furthermore, the driving structure includes a plurality of supporting plates fixedly sleeved on the dust removal pipe, each supporting plate is arranged one by one under a plurality of rotating rings, and a pair of meshing transmission gears are rotatably mounted on the supporting plates, one of which is fixedly sleeved on the rotating ring.

[0013] Furthermore, a rotating shaft is rotatably installed on the walking seat, and the upper end of the rotating shaft passes through multiple supporting plates and transmission gears in sequence and is rotatably installed on the bottom end of the horizontal tube. A driving motor for rotationally driving the rotating shaft is fixedly installed inside the walking seat. The cooperation between the rotating shaft and multiple pairs of meshing transmission gears can realize the synchronous rotation of multiple dust collection components, thereby adjusting the suction direction of the dust collection fan in all directions, which is conducive to sucking dust air around the dust collection component into its interior and expanding the dust suction range.

[0014] Furthermore, a semi-annular groove communicating with the filtering space is provided on the outer end wall of the dust removal pipe, and a cover plate is installed at the semi-annular groove.

[0015] Furthermore, the inner filter and the outer filter are both semi-annular structures, and the upper and lower ends of the inner filter are respectively provided with an upper receiving ring and a lower receiving ring, and the lower receiving ring and the upper receiving ring are both provided with embedding grooves for embedding and installing the outer filter and the inner filter.

[0016] Furthermore, the connecting sleeve is connected with the inner filter and the dust removal pipe, a circulation space is reserved between the outer filter and the inner wall of the dust removal pipe, a ventilation cavity connected with the circulation space is opened on the bottom end wall of the exhaust sleeve, and a one-way air inlet valve connected with the end wall of the water inlet pipe is fixedly connected to the inner wall of the ventilation cavity. The circulation space, the exhaust sleeve and the water inlet pipe are connected through the one-way air inlet valve. When the air circulation in the mine excavation tunnel is insufficient, the one-way air inlet valve is opened to discharge the filtered and dust-removed air into the water inlet pipe, which further removes dust and cools the air. The treated air is sprayed outward from multiple atomizing nozzles along with the spray liquid, effectively increasing the moist air content in the mine excavation tunnel.

[0017] Furthermore, the outer diameter of the lower receiving ring is consistent with the outer diameter of the connecting sleeve, and the upper receiving ring is consistent with the inner ring diameter of the ventilation cavity. The outer filter and the inner filter are arranged into two semi-annular structures. Therefore, during installation, after the cover plate is removed outward, firstly connect one set of the outer filter and the inner filter between the exhaust sleeve and the connecting sleeve, with the inner filter facing the water inlet pipe. The outer filter is rotated by hand until the lower receiving ring is located inside the semi-annular groove, and then the other set of the outer filter and the inner filter are connected to complete the overall installation of the filtration structure.

[0018] Furthermore, the lower receiving ring and the upper receiving ring are both made of magnetic materials. After the lower receiving ring and the upper receiving ring arranged inside and outside are connected, magnetic connection is adopted to improve the stability of the overall installation of the filtering structure.

[0019] Compared with the prior art, the advantages of the present invention are:

[0020] (1) This scheme is to set up multiple groups of movable dust removal mechanisms, which are mainly used for dust removal and ventilation, supplemented by spray atomization. When working, multiple groups of dust suction components arranged on the dust removal pipe are used to perform multi-point vertical and horizontal suction of dust in the mine comprehensive excavation tunnel, and multiple groups of dust suction components can rotate in a circle to adjust the suction direction in all directions to expand the dust suction range. The dust sucked into the dust removal pipe by multiple dust suction components is independently filtered by multiple filtering structures to improve the dust removal effect. While removing dust, the ventilation pipe is used to introduce outside air to the top of the tunnel, and the outside air is ventilated from top to bottom. In addition, the water inlet pipe matched with multiple atomizing nozzles passes through multiple filtering structures from bottom to top. While realizing the top atomization effect, it is also beneficial to cool the filtered tunnel air, so that the air discharged outside the mine meets the dust removal and cooling standards.

[0021] (2) This solution also connects the exhaust sleeves at the top of multiple filtering structures with the water inlet pipe. Specifically, a ventilation cavity connected to the circulation space is opened on the bottom end wall of the exhaust sleeve. A one-way air inlet valve connected to the end wall of the water inlet pipe is fixedly connected to the inner wall of the ventilation cavity. The circulation space, the exhaust sleeve and the water inlet pipe are connected through the one-way air inlet valve. When the air circulation in the mine tunnel is insufficient, the one-way air inlet valve is opened to discharge the filtered and dust-removed air into the water inlet pipe, which further removes dust and cools the air. The treated air is sprayed out from multiple atomizing nozzles along with the spray liquid, effectively increasing the humid air content in the mine tunnel in a short time.

[0022] (3) The vertical pipes and horizontal pipes in this scheme are connected by multiple rigid pipes and telescopic pipes that are staggered, and the dust removal pipe is fixedly connected to the rigid pipe of the horizontal pipe. The vertical pipes and horizontal pipes are set to be telescopic and can be adjusted in length according to the actual tunnel. The horizontal pipe is installed at the top of the mine's comprehensive excavation working tunnel. The dust removal pipe is vertically downward, and the dust removal distribution position of multiple dust removal pipes is adjusted by relying on the walking seat. Compared with the fixed installation, it effectively improves the flexibility of dust removal and ventilation in the tunnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 It is a structural schematic diagram of the dust removal structure of the present invention;

[0025] Figure 3 This is a schematic diagram of the structure when the cover plate is detached from the dust removal pipe of the present invention;

[0026] Figure 4 It is a schematic diagram of the structure of the present invention when the dust collection assembly and the supporting plate are detached from the dust removal pipe;

[0027] Figure 5It is a partial cross-sectional view of the junction between the dust removal mechanism and the horizontal pipe of the present invention;

[0028] Figure 6 It is a cross-sectional view of the junction of the dust removal pipe, the dust suction assembly and the filtering structure of the present invention;

[0029] Figure 7 It is a partial cross-sectional view of the present invention when it is working.

[0030] Description of the numbers in the figure:

[0031] 1. Vertical pipe; 2. Horizontal pipe; 3. Dust removal pipe; 301. Dust inlet; 302. Cover plate; 303. Annular groove; 4. Traveling seat; 5. Support plate; 6. Dust suction assembly; 61. Annular sleeve; 62. Dust suction nozzle; 63. Dust suction fan; 64. Rotating ring; 7. Transmission gear; 8. Rotating shaft; 9. Water inlet pipe; 10. Ventilation pipe; 101. Jet nozzle; 11. Filter structure; 111. Outer filter; 112. Inner filter; 113. Lower receiving ring; 114. Upper receiving ring; 12. Exhaust sleeve; 121. One-way air inlet valve; 13. Connecting sleeve; 14. Exhaust pipe; 15. Connecting sleeve; 16. Connecting pipe; 17. Atomizing nozzle. DETAILED DESCRIPTION

[0032] The following will combine the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all the embodiments. All other embodiments obtained by ordinary technicians in this field without creative work based on the embodiments of the present invention belong to the scope of protection of the present invention.

[0033] Example 1: The present invention discloses an underground ventilation and dust reduction device suitable for coal mining engineering, please refer to Figure 1 , including a vertical pipe 1 and a horizontal pipe 2 arranged vertically, a plurality of dust removal mechanisms are arranged at the bottom end of the horizontal pipe 2, the vertical pipe 1 and the horizontal pipe 2 are connected by a plurality of staggered rigid pipes and telescopic pipes, and the dust removal pipe 3 is fixedly connected to the rigid pipe of the horizontal pipe 2, the vertical pipe 1 and the horizontal pipe 2 are arranged to be retractable, so that the length can be adjusted according to the actual tunnel, the horizontal pipe 2 is installed at the top of the mine comprehensive excavation working tunnel, the dust removal pipe 3 is vertically downward, and the dust removal distribution position of the plurality of dust removal pipes 3 is adjusted by relying on the walking seat 4 according to actual needs. Compared with the fixed installation, the flexibility of dust removal and ventilation in the tunnel is effectively improved.

[0034] See also Figure 2-Figure 4The dust removal mechanism includes a traveling seat 4, the upper end of the traveling seat 4 is fixedly connected to the dust removal pipe 3 connected to the horizontal pipe 2, the dust removal pipe 3 is rotatably installed with multiple dust collection components 6 through a driving structure in the vertical direction, the dust collection component 6 includes an annular sleeve 61 that rotates on the dust removal pipe 3 and is provided with an opening at one end, the outer end of the annular sleeve 61 is connected to a dust collection nozzle 62 that is connected to the opening and has a dust collection fan 63, and a plurality of dust inlets 301 that are connected to the dust collection nozzle 62 are opened on the outer end wall of the dust removal pipe 3;

[0035] The upper and lower ends of the annular sleeve 61 are fixedly connected with a rotating ring 64 with an inwardly expanded diameter. The end walls of the dust removal pipe 3 located above and below the dust inlet 301 are provided with an annular groove 303 for the rotating ring 64 to be rotatably embedded and installed. The driving structure includes a plurality of supporting plates 5 fixedly sleeved on the dust removal pipe 3, and each supporting plate 5 is arranged under the plurality of rotating rings 64 in a one-to-one correspondence. A pair of meshing transmission gears 7 are rotatably installed on the supporting plates 5, and one of the transmission gears 7 is fixedly sleeved on the rotating ring 64;

[0036] A rotating shaft 8 is rotatably installed on the walking seat 4, and the upper end of the rotating shaft 8 passes through multiple supporting plates 5 and transmission gears 7 in sequence and is rotatably installed on the bottom end of the horizontal tube 2. A driving motor for rotating the rotating shaft 8 is fixedly installed inside the walking seat 4. By utilizing the cooperation between the rotating shaft 8 and multiple pairs of meshing transmission gears 7, multiple dust collection components 6 can rotate synchronously, thereby adjusting the suction direction of the dust collection fan 63 in all directions, which is conducive to sucking dust air around the dust collection component 6 into it and expanding the dust suction range.

[0037] See also Figure 5-Figure 7 A plurality of filter structures are fixedly installed inside the dust removal pipe 3, one by one, and located above the plurality of dust collection components 6. The filter structure includes an exhaust sleeve 12 and a connecting sleeve 13 fixed inside the dust removal pipe 3 and distributed up and down. A filter space is formed between the exhaust sleeve 12 and the connecting sleeve 13. An inner filter screen 112 and an outer filter screen 111 connected inner and outer are fixedly installed in the filter space. A circulation space is reserved between the outer filter screen 111 and the inner wall of the dust removal pipe 3. A plurality of air ducts connected to the exhaust sleeve 12 are distributed at the outer end of the dust removal pipe 3. The plurality of air ducts are connected by an exhaust pipe 14, and the upper end of the exhaust pipe 14 is connected to the horizontal pipe 2.

[0038] The dust air sucked by the dust collection component 6 is introduced upward through the connecting sleeve 13 into the inner filter 112, and passes through the inner filter 112 and the outer filter 111 from the inside to the outside in turn, and is filtered twice inside and outside. The filter hole size of the inner filter 112 is larger than that of the outer filter 111. The filtered air is introduced upward from the circulation space to the exhaust sleeve 12, and then discharged into the exhaust pipe 14 through the air guide pipe at the exhaust sleeve 12. Finally, the exhaust pipe 14 discharges the filtered air from the horizontal pipe 2 and the vertical pipe 1 to the outside of the mine.

[0039] A ventilation pipe 10 extending to the outside of the vertical pipe 1 is inserted at the top of the dust removal pipe 3, and a water inlet pipe 9 is installed at the bottom of the ventilation pipe 10, which passes through the exhaust sleeve 12, the inner filter 112, the connecting sleeve 13 in sequence and extends to the outside of the walking seat 4. The ventilation pipe 10 is fixedly connected to an injection nozzle 101 that passes through the outside of the dust removal pipe 3 near the water inlet pipe 9. A connecting pipe 16 connected to the water inlet pipe 9 is fixedly connected to the top of the water inlet pipe 9. A plurality of atomizing nozzles 17 connected to the connecting pipe 16 are distributed in an annular manner on the outer side of the top of the dust removal pipe 3. A connecting sleeve 15 corresponding to the position of the connecting pipe 16 is also fixedly connected to the top of the dust removal pipe 3, and the inner ends of the plurality of atomizing nozzles 17 pass through the connecting sleeve 15 and are connected to the connecting pipe 16.

[0040] In the process of multi-point suction and dust removal, ventilation pipes 10 and nozzles 101 are used to supply outside air into the mine's comprehensive excavation tunnels, and the outside air is ventilated from top to bottom. In addition, the water inlet pipe 9 coordinated with multiple atomizing nozzles 17 passes through multiple filtering structures from bottom to top, which not only realizes the top atomization effect, but also helps to cool the filtered tunnel air, so that the air discharged outside the mine meets the dust removal and cooling standards.

[0041] Embodiment 2: Based on Embodiment 1, this embodiment further optimizes the filter structure and the dust removal pipe structure used to install the filter structure, as follows:

[0042] See also Figure 3-Figure 5 A semi-annular groove connected to the filter space is provided on the outer end wall of the dust removal pipe 3, and a cover plate 302 is installed at the semi-annular groove. The semi-annular groove is provided on the outer end wall of the dust removal pipe 3, which is conducive to installing the filter structure in the filter space and facilitating the disassembly and replacement of the filter structure.

[0043] The inner filter 112 and the outer filter 111 are both semi-annular structures. The upper and lower ends of the inner filter 112 are respectively provided with an upper receiving ring 114 and a lower receiving ring 113. The lower receiving ring 113 and the upper receiving ring 114 are both provided with embedding grooves for embedding and installing the outer filter 111 and the inner filter 112, so that the outer filter 111 and the inner filter 112 can be easily installed between the lower receiving ring 113 and the upper receiving ring 114.

[0044] The connecting sleeve 13 is connected with the inner filter 112 and the dust removal pipe 3. The bottom end wall of the exhaust sleeve 12 is provided with a ventilation cavity connected with the circulation space. The inner wall of the ventilation cavity is fixedly connected with a one-way air inlet valve 121 which is connected with the end wall of the water inlet pipe 9. The one-way air inlet valve 121 is used to connect the circulation space, the exhaust sleeve 12 and the water inlet pipe 9. When the air circulation in the mine tunnel is insufficient, the one-way air inlet valve 121 is opened to discharge the filtered and dust-removed air into the water inlet pipe 9, which further removes dust and cools the air. The treated air is sprayed outward along with the spray liquid by multiple atomizing nozzles 17, which effectively increases the moist air content in the mine tunnel.

[0045] The outer diameter of the lower receiving ring 113 is consistent with the outer diameter of the connecting sleeve 13, and the upper receiving ring 114 is consistent with the inner ring diameter of the ventilation cavity. The outer filter 111 and the inner filter 112 are set to two semi-annular structures. Therefore, during installation, after the cover plate 302 is detached outward, firstly, one set of the outer filter 111 and the inner filter 112 are connected between the exhaust sleeve 12 and the connecting sleeve 13, and the inner filter 112 faces the water inlet pipe 9. The outer filter 111 is rotated by hand until the lower receiving ring 113 is located inside the semi-annular groove, and then the other set of the outer filter 111 and the inner filter 112 are connected to complete the overall installation of the filtering structure.

[0046] In addition, the lower receiving ring 113 and the upper receiving ring 114 are both made of magnetic materials. After the lower receiving ring 113 and the upper receiving ring 114 arranged inside and outside are connected, magnetic connection is adopted to improve the stability of the overall installation of the filtering structure. After the filtering structure is installed, the cover plate 302 can be installed in the semi-annular groove.

[0047] In summary, the present invention is to arrange multiple groups of movable dust removal mechanisms in the horizontal direction on the horizontal pipe 2, and to adjust the dust removal distribution positions of multiple dust removal pipes 3 by the traveling seat 4 according to the actual length of the tunnel, thereby effectively improving the flexibility of dust removal and ventilation in the tunnel compared with the fixed installation;

[0048] The dust removal mechanism is mainly used for dust removal and ventilation, supplemented by spray atomization. When working, the multiple dust suction components 6 arranged on the dust removal pipe 3 are used to perform multi-point suction of dust in the mine comprehensive excavation tunnel in the vertical and horizontal directions, and the multiple dust suction components 6 can rotate in a circle, and the suction direction of the dust suction fan 63 can be adjusted in all directions to expand the dust suction range. The dust sucked into the dust removal pipe 3 by the multiple dust suction components 6 is independently filtered by multiple filtering structures to improve the dust removal effect. While removing dust, the ventilation pipe 10 is used to introduce outside air to the top of the tunnel, and the outside air is ventilated from top to bottom. In addition, the water inlet pipe 9 matched with the multiple atomizing nozzles 17 passes through the multiple filtering structures from bottom to top, which not only realizes the top atomization effect, but also helps to cool the filtered tunnel air, so that the air discharged outside the mine meets the dust removal and cooling standards;

[0049] In addition, when the air circulation in the mine's comprehensive excavation tunnel is insufficient, the one-way air inlet valve 121 at the exhaust sleeve 12 is opened to discharge the filtered and dust-removed air into the water inlet pipe 9, which further removes dust and cools the air. The treated air is sprayed outward along with the spray liquid from multiple atomizing nozzles 17, effectively increasing the moist air content in the mine's comprehensive excavation tunnel in a short time.

[0050] The above are only preferred specific implementation modes of the present invention; however, the protection scope of the present invention is not limited thereto; any technician familiar with the technical field within the technical scope disclosed by the present invention; any equivalent replacement or change based on the technical solution and improved concept of the present invention shall be covered within the protection scope of the present invention.

Claims

1. An underground ventilation and dust reduction device suitable for coal mining engineering, comprising a vertically arranged vertical pipe and a horizontal pipe, characterized in that: The bottom end of the horizontal tube is provided with a plurality of dust removal mechanisms, the dust removal mechanisms include a walking seat, the upper end of the walking seat is fixedly connected to a dust removal pipe connected to the horizontal tube, the dust removal pipe is rotatably installed with a plurality of dust suction components in a vertical direction through a driving structure, the dust suction component includes an annular sleeve rotating on the dust removal pipe and having an opening at one end, a dust suction nozzle with a dust suction fan is connected to the opening, and a plurality of dust inlets connected to the dust suction nozzles are provided on the outer end wall of the dust removal pipe; A plurality of filter structures are fixedly installed inside the dust removal pipe, one of which is located above the plurality of dust collection components. The filter structure includes an exhaust sleeve and a connecting sleeve fixed inside the dust removal pipe and distributed up and down, a filter space is formed between the exhaust sleeve and the connecting sleeve, an inner filter screen and an outer filter screen connected inside and outside are installed in the filter space, a plurality of air guide pipes connected to the exhaust sleeve are distributed at the outer end of the dust removal pipe, and the outer ends of the plurality of air guide pipes are externally connected to an exhaust pipe installed on the horizontal pipe; A ventilation pipe extending to the outside of the vertical pipe is inserted at the top of the dust removal pipe, and a water inlet pipe is installed at the bottom of the ventilation pipe, which penetrates the exhaust sleeve, the inner filter screen, the connecting sleeve in sequence downward and extends to the outside of the walking seat. The ventilation pipe is connected to an injection nozzle that penetrates to the outside of the dust removal pipe near one end of the water inlet pipe, and a connecting pipe connected to the water inlet pipe is fixedly sleeved on the top of the water inlet pipe, and a plurality of atomizing nozzles connected to the connecting pipe are distributed in a ring on the outer side of the top of the dust removal pipe.

2. The underground ventilation and dust reduction device suitable for coal mining engineering according to claim is characterized in that: The vertical pipe and the horizontal pipe are connected by a plurality of staggered rigid pipes and telescopic pipes, and the dust removal pipe is fixedly connected to the rigid pipe of the horizontal pipe.

3. The underground ventilation and dust reduction device suitable for coal mining engineering according to claim is characterized in that: The upper and lower ends of the annular sleeve are fixedly connected with a rotating ring with an inwardly expanded diameter, and the end walls of the dust removal pipe located above and below the dust inlet are provided with annular grooves for rotating the rotating ring.

4. The underground ventilation and dust reduction device suitable for coal mining engineering according to claim is characterized in that: The driving structure includes a plurality of supporting plates fixedly sleeved on the dust removal pipe, each of the supporting plates is arranged one by one under a plurality of rotating rings, and a pair of meshing transmission gears are rotatably mounted on the supporting plates, one of the transmission gears is fixedly sleeved on the rotating ring.

5. The underground ventilation and dust reduction device suitable for coal mining engineering according to claim is characterized in that: A rotating shaft is rotatably mounted on the traveling seat, and the upper end of the rotating shaft sequentially passes through a plurality of supporting plates and a transmission gear and is rotatably mounted on the bottom end of the transverse tube. A driving motor for rotationally driving the rotating shaft is fixedly mounted inside the traveling seat.

6. The underground ventilation and dust reduction device suitable for coal mining engineering according to claim is characterized in that: A semi-annular groove communicating with the filtering space is provided on the outer end wall of the dust removal pipe, and a cover plate is butt-mounted at the semi-annular groove.

7. The underground ventilation and dust reduction device suitable for coal mining engineering according to claim is characterized in that: The inner filter and the outer filter are both semi-annular structures. The upper and lower ends of the inner filter are respectively provided with an upper receiving ring and a lower receiving ring. The lower receiving ring and the upper receiving ring are both provided with embedding grooves for embedding and installing the outer filter and the inner filter.

8. The underground ventilation and dust reduction device suitable for coal mining engineering according to claim is characterized in that: The connecting sleeve is connected with the inner filter screen and the inside of the dust removal pipe, a flow space is reserved between the outer filter screen and the inner wall of the dust removal pipe, a ventilation cavity connected with the flow space is opened on the bottom end wall of the exhaust sleeve, and a one-way air inlet valve connected with the end wall of the water inlet pipe is fixedly connected to the inner wall of the ventilation cavity.

9. The underground ventilation and dust reduction device suitable for coal mining engineering according to claim is characterized in that: The outer diameter of the lower receiving ring is consistent with the outer diameter of the connecting sleeve, and the diameter of the upper receiving ring is consistent with the inner ring of the ventilation cavity.

10. The underground ventilation and dust reduction device suitable for coal mining engineering according to claim, characterized in that: The lower receiving ring and the upper receiving ring are both made of magnetic materials.

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