Ventilation cooling system for coal mine

Abstract

The invention relates to a ventilation cooling system for a coal mine, and relates to the field of coal mine ventilation equipment, the ventilation cooling system comprises a ventilation pipe and an air supply assembly, a cooling assembly and a water supply assembly which are arranged in the ventilation pipe, and the air supply assembly is used for accelerating flowing of airflow in the ventilation pipe; the length of the ventilation pipe is parallel to the first direction, the cross section, perpendicular to the first direction, of the ventilation pipe is in a circular ring shape, and the central axis of the ventilation pipe is a first axis. The cooling assembly comprises a guide ring, a water pipe and a spray head, and the guide ring is coaxially arranged in the ventilation pipe and rotationally connected to the ventilation pipe around a first axis in a guiding mode; the water pipe is fixedly connected to the guide ring and is parallel to the first direction; a plurality of water pipes are distributed around the periphery of the ventilation pipe at intervals; the nozzle is fixedly connected to the water pipe and communicates with the water pipe; the water supply assembly is connected between the water pipe and the ventilation pipe and used for supplying water to the water pipe. The ventilation cooling effect can be improved.

Description

Technical Field

[0001] This application relates to the field of coal mine ventilation equipment, and in particular to a ventilation and cooling system for coal mines. Background Art

[0002] During the coal mining process, the application of a ventilation and cooling system is of great significance for ensuring the safety of miners and improving work efficiency. As the depth of coal mining increases, the temperature of the underground environment gradually rises. Therefore, it is necessary to cool down.

[0003] Currently, the main technical means in the field of coal mine ventilation and cooling include: one is to set up a fixed spray device and use the principle of heat absorption by water mist evaporation to achieve cooling; the other is to install an axial flow fan or a centrifugal fan to accelerate air flow to carry away heat. In the prior art, the above means generally have the following defects: in some working conditions, due to the presence of various electrical appliances in some areas, water cannot be directly sprayed; and relying solely on a centrifugal fan, its cooling effect is low. Therefore, there is an urgent need for a system that can effectively improve the ventilation and cooling effect, which is an urgent problem to be solved. Summary of the Invention

[0004] In order to improve the ventilation and cooling effect, this application provides a ventilation and cooling system for coal mines.

[0005] The ventilation and cooling system for coal mines provided by this application adopts the following technical solutions: A ventilation and cooling system for coal mines includes a ventilation pipe, a air supply component and a cooling component arranged in the ventilation pipe. The air supply component is used to accelerate the flow of air in the ventilation pipe. The length of the ventilation pipe is parallel to a first direction. The cross-section of the ventilation pipe perpendicular to the first direction is circular, and the central axis of the ventilation pipe is the first axis. The cooling component includes: A guiding ring, which is coaxially arranged in the ventilation pipe, and the guiding ring is rotatably connected to the ventilation pipe around the first axis. A water pipe, which is fixedly connected to the guiding ring, and the water pipe is parallel to the first direction; a plurality of the water pipes are circumferentially spaced apart around the ventilation pipe; and, A nozzle, which is fixedly connected to the water pipe and is communicated with the water pipe. It further includes: A water supply component, which is connected between the water pipe and the ventilation pipe to supply water to the water pipe.

[0006] By adopting the above technical solution, the air supply component accelerates the flow of air in the ventilation pipe, improves the air circulation efficiency, and thus improves the ventilation condition of the underground environment. The cooling component realizes the all-round spraying of water mist through the rotating guide ring, multiple water pipes parallel to the first direction, and the nozzles communicated with the water pipes, and effectively reduces the temperature of the air flow in the ventilation pipe by using the principle of heat absorption during water mist evaporation, solving the problem that direct spraying cannot be carried out in some areas. The water supply component ensures the continuous water supply of the water pipes and guarantees the stability of the cooling process. The overall solution can not only improve the cooling effect but also take into account the dust reduction function, significantly optimizing the working environment in the coal mine underground.

[0007] Optionally, the water supply component includes: Two fixed outer rings, the fixed outer rings are coaxially and fixedly connected to the ventilation pipe, the two fixed outer rings are spaced apart along the first direction, and a water storage area is formed between the two fixed outer rings; A rotating inner ring, the rotating inner ring is coaxially located inside the inner circle of the fixed outer ring, and the rotating inner ring is rotatably connected to the fixed outer ring around the first axis. One end of the water pipe is sealed, and the other end is fixedly connected to the fixed outer ring; a water tank is correspondingly opened at each position of the rotating inner ring corresponding to each water pipe, one end of the water tank is communicated with the water pipe, and the other end is communicated with the water storage area; and, Rotating sealing rings, the rotating sealing rings are fixedly connected between each fixed outer ring and the rotating inner ring correspondingly; An inlet is provided on the ventilation pipe and communicated with the water tank.

[0008] By adopting the above technical solution, the water storage area between the two fixed outer rings provides a space for storing water, and the water tanks on the rotating inner ring guide the water in the water storage area to the water pipes, ensuring continuous water supply. In addition, the setting of the rotating sealing rings effectively prevents water leakage during rotation, improving the sealing performance and reliability of the system. This design ensures that the nozzles can continuously spray water mist to achieve the cooling effect.

[0009] Optionally, it further includes a rotation driving component, and the rotation driving component includes: A bevel gear ring, in the first direction, the bevel gear ring is located on the side of the rotating inner ring away from the water pipe, and the bevel gear ring is coaxially and fixedly connected to the rotating inner ring; A bevel gear, the bevel gear is rotatably connected to the ventilation pipe around the second axis, the second axis is perpendicular to the first direction, and the bevel gear meshes with the bevel gear ring; A rotating shaft, one end of the rotating shaft is coaxially and fixedly connected to the bevel gear, and the other end extends outside the ventilation pipe after passing through the ventilation pipe; and, A motor, which is connected between the rotating shaft and the ventilation pipe for driving the rotating shaft to rotate along the ventilation pipe.

[0010] By adopting the above technical solution, the motor drives the rotating shaft to rotate, the rotating shaft drives the bevel gear to rotate, the bevel gear drives the meshing bevel gear ring to rotate, and the bevel gear ring will drive the rotating inner ring to rotate synchronously; the setting of the rotation driving component can effectively drive the rotating inner ring to rotate, thereby driving the water pipe and the nozzle in the cooling component to rotate synchronously.

[0011] Optionally, the air supply component includes: A rotating rod coaxially located inside the ventilation pipe; Blades fixedly connected to the rotating rod; and, A first connecting member fixedly connected between the rotating rod and the rotating inner ring.

[0012] By adopting the above technical solution, the blades are fixedly connected to the rotating rod and can push the air flow to flow along the ventilation pipe when the rotating rod rotates, thereby accelerating the air flow transportation efficiency; the first connecting member fixedly connects the rotating rod and the rotating inner ring, enabling the rotating rod to rotate synchronously with the rotating inner ring, further ensuring the power source and operation reliability of the air supply component.

[0013] Optionally, it further includes a dust filtering component, and the dust filtering component includes: A dust filter screen, in the first direction, the dust filter screen is located on the side of the rotating inner ring away from the air supply component; The dust filter screen is connected to the water pipe.

[0014] By adopting the above technical solution, the dust filter screen is arranged on the side of the rotating inner ring away from the air supply component and is connected to the water pipe, which can effectively intercept solid particles in the air flow and prevent them from entering the subsequent area with the air flow. At the same time, since the dust filter screen is connected to the water pipe, the dust filter screen will also rotate during the rotation of the water pipe with the rotating inner ring, thereby expanding the filtering area and improving the filtering efficiency. In addition, combined with other features in the overall solution, the centrifugal force generated during rotation helps to throw the sewage attached to the dust filter screen to the bottom of the ventilation pipe, further enhancing the cleaning ability of the system and ensuring that the ventilation and cooling effect is not affected by dust.

[0015] Optionally, there are multiple dust filtering components, and the multiple dust filtering components are sequentially distributed in the first direction.

[0016] By adopting the above technical solution, as the air flow passes through multiple dust filter screens in sequence, solid particles will be intercepted and adsorbed step by step, significantly improving the dust removal efficiency.

[0017] Optionally, the dust filtering component further includes: A plurality of elastic members, one end of each elastic member is connected to the dust filter net, and the other end is connected to the water pipe; The dust filter net is circular and is arranged perpendicular to the first direction; When the dust filter net is coaxial with the ventilation pipe, each elastic member is in a deformable state that can be restored.

[0018] By adopting the above technical solution, during the process of the dust filter net rotating with the water pipe, the arrangement of the elastic members can make the dust filter net shake, which is convenient for removing sewage from the dust filter net.

[0019] Optionally, there are three water pipes. When the elastic members are in a normal state, the lengths of the elastic members on each water pipe are different.

[0020] By adopting the above technical solution, when the dust filter net rotates with the water pipe, due to the eccentric structure caused by the different lengths of the elastic members, the amplitude of the dust filter net shaking will be larger, so as to more effectively throw the sewage on the dust filter net to the bottom of the ventilation pipe, improving the sewage discharge efficiency and reducing the possibility of dust filter net blockage. Specifically, the design of different lengths of elastic members on the three water pipes ensures that the dust filter net generates irregular shaking during the rotation process, enhancing the removal effect on solid particles and sewage.

[0021] Optionally, on the circumferential direction of the ventilation pipe, a drain port is provided on the side of the ventilation pipe away from the water inlet.

[0022] By adopting the above technical solution, the setting of the drain port can effectively discharge the accumulated water generated by spray cooling on the inner wall of the ventilation pipe, avoiding the accumulation of water in the ventilation pipe.

[0023] Optionally, the inner diameter of the ventilation pipe gradually decreases from the fixed outer ring to the direction of the ventilation pipe port.

[0024] By adopting the above technical solution, the inner diameter of the ventilation pipe gradually decreases from the fixed outer ring to the direction of the ventilation pipe port, which can guide the water flow to flow along the bottom of the ventilation pipe to the fixed outer ring, so as to facilitate the concentration of the sewage in the ventilation pipe and completely discharge it through the drain port arranged near the fixed outer ring. This structural design effectively improves the sewage discharge efficiency and avoids the residue of sewage in the ventilation pipe.

[0025] In summary, the present application includes at least one of the following beneficial technical effects: 1. By setting a rotatable cooling component and spraying water mist into the ventilation pipe from different angles by using a plurality of spray heads, the cooling efficiency is effectively improved, and at the same time, the influence on electrical equipment caused by direct spraying is avoided; 2. The combination of the water supply component and the rotary sealing structure ensures that water can be continuously and stably supplied to the spray heads during the rotation of the water pipe and the spray heads with the rotary inner ring, improving the reliability of the system operation; 3. The synergistic effect of the air supply component and the cooling component accelerates the air flow, enabling the water mist to quickly and evenly spread throughout the ventilation pipe, further enhancing the cooling effect and improving the air quality in the mine. Description of the Drawings

[0026] Figure 1 is a schematic diagram of the overall structure of an embodiment of the present application; Figure 2 is a schematic diagram of the structure of the cooling component in an embodiment of the present application; Figure 3 is a schematic diagram of the structure of the water supply component in an embodiment of the present application; Figure 4 is Figure 3 an enlarged view of part A in Figure 5 is Figure 2 an enlarged view of part B in Figure 6 is a schematic diagram of the structure of the air supply component in an embodiment of the present application.

[0027] Description of the Reference Numerals: 1, ventilation pipe; 11, first annular groove; 12, water inlet; 13, drain outlet; 2, air supply component; 21, rotating rod; 22, blade; 23, first connecting member; 3, cooling component; 31, guide ring; 32, water pipe; 33, nozzle; 4, water supply component; 41, fixed outer ring; 411, water storage area; 42, rotating inner ring; 421, water tank; 43, rotating sealing ring; 5, rotating drive component; 51, bevel gear ring; 52, bevel gear; 53, rotating shaft; 54, motor; 55, first mounting seat; 6, dust filtering component; 61, dust filter screen; 62, elastic member; 621, second mounting seat; 622, telescopic rod; 6221, fixed rod; 6222, movable rod; 623, first rotating shaft; 624, second rotating shaft; 625, compression spring. Detailed Description of the Embodiment

[0028] The following will further elaborate on the present application in conjunction with the attached Figures 1-6 drawings.

[0029] An embodiment of the present application discloses a ventilation and cooling system for coal mines. Refer to Figure 1 and Figure 2, a ventilation and cooling system for coal mines includes a ventilation pipe 1, and a air supply component 2 and a cooling component 3 disposed inside the ventilation pipe 1; the pipe length of the ventilation pipe 1 is parallel to the first direction, the cross-section of the inner peripheral wall of the ventilation pipe 1 perpendicular to the first direction is circular, the central axis of the ventilation pipe 1 is the first axis, and the first axis is parallel to the first direction; the air supply component 2 and the cooling component 3 are sequentially distributed along the first direction inside the ventilation pipe 1, the air supply component 2 is used to accelerate the flow of air inside the ventilation pipe 1, and under the acceleration of the air supply component 2, the air enters the air supply component 2 after passing through the cooling component 3.

[0030] Referring to Figure 1 and Figure 2 , the cooling component 3 includes a guide ring 31, a water pipe 32 and a spray head 33. The guide ring 31 is coaxially disposed inside the ventilation pipe 1, and the guide ring 31 is rotatably connected to the ventilation pipe 1 around the first axis. In order to install the guide ring 31, a first annular groove 11 is coaxially opened on the inner wall of the ventilation pipe 1. The guide ring 31 is coaxially disposed inside the first annular groove 11 and can rotate around the first axis inside the first annular groove 11; the water pipe 32 is fixedly connected to the guide ring 31 and the water pipe 32 is parallel to the first direction; a plurality of water pipes 32 are circumferentially spaced around the ventilation pipe 1. In the present disclosure, three water pipes 32 are distributed on the guide ring 31, and the three water pipes 32 are evenly distributed circumferentially around the ventilation pipe 1; each water pipe 32 is provided with a plurality of spray heads 33. The spray heads 33 are fixedly connected to the water pipe 32 and communicate with the water pipe 32; the spray heads 33 are atomizing spray heads 33. When water is supplied into the water pipe 32, water can be sprayed into the ventilation pipe 1 through the spray heads 33.

[0031] Referring to Figure 3 and Figure 4 , in order to supply water to the water pipe 32, a water supply component 4 is further provided on the ventilation pipe 1. The water supply component 4 is connected between the water pipe 32 and the ventilation pipe 1 for supplying water to the water pipe 32; in the first direction, the water supply component 4 is located between the cooling component 3 and the air supply component 2; the water supply component 4 includes two fixed outer rings 41, a rotating inner ring 42 and two rotating sealing rings 43; the fixed outer rings 41 are coaxially and fixedly connected to the inner wall of the ventilation pipe 1. The two fixed outer rings 41 are spaced apart along the first direction, and a water storage area 411 is formed between the two fixed outer rings 41; the ventilation pipe 1 is provided with a water inlet 12 communicating with the water tank 421. When the ventilation pipe 1 is placed horizontally, the water inlet 12 is located above the ventilation pipe 1; The rotating inner ring 42 is coaxially located inside the inner ring of the fixed outer ring 41, and the rotating inner ring 42 is rotationally connected to the fixed outer ring 41 about the first axis. A rotating sealing ring 43 is fixedly connected correspondingly between each fixed outer ring 41 and the rotating inner ring 42 to achieve the rotary seal between the rotating inner ring 42 and the fixed outer ring 41. One end of the water pipe 32 is sealed, and the other end is fixedly connected to the fixed outer ring 41. The rotating inner ring 42 is correspondingly provided with a water tank 421 at each position of the water pipe 32. One end of the water tank 421 is communicated with the water pipe 32, and the other end is communicated with the water storage area 411. During operation, water is added into the water storage area 411 through the water inlet 12. The water in the water storage area 411 enters the water pipe 32 through the water tank 421 and is finally sprayed into the ventilation pipe 1 by the nozzle 33. During the process of rotating the water pipe 32 and the nozzle 33 along with the rotating inner ring 42, due to the effect of the rotating sealing ring 43, the water in the water storage area 411 can be prevented from leaking out into the ventilation pipe 1.

[0032] Referring to Figure 3 and Figure 4 , in order to drive the rotating inner ring 42 to rotate along the fixed outer ring 41, in some embodiments of the present application, a rotation driving assembly 5 is further included. The rotation driving assembly 5 includes a bevel gear ring 51, a bevel gear 52, a rotating shaft 53 and a motor 54. In the first direction, the bevel gear ring 51 is located on the side of the rotating inner ring 42 away from the water pipe 32, and the bevel gear ring 51 is coaxially and fixedly connected to the rotating inner ring 42. The bevel gear 52 is located inside the ventilation pipe 1, and the bevel gear 52 and the water inlet 12 are located on the same side of the ventilation pipe 1. The bevel gear 52 is rotationally connected to the ventilation pipe 1 about the second axis, and the second axis is perpendicular to the first direction. The bevel gear 52 and the bevel gear ring 51 are meshed. One end of the rotating shaft 53 is coaxially and fixedly connected to the bevel gear 52, and the other end extends outside the ventilation pipe 1 after passing through the ventilation pipe 1. The motor 54 is connected between the rotating shaft 53 and the ventilation pipe 1 to drive the rotating shaft 53 to rotate along the ventilation pipe 1. Specifically, a first mounting seat 55 is fixedly connected outside the ventilation pipe 1. The motor 54 is located outside the ventilation pipe 1, and the housing of the motor 54 is fixedly connected to the first mounting seat 55. The output shaft of the motor 54 is coaxially and fixedly connected to the rotating shaft 53, so that the motor 54 drives the bevel gear 52 to rotate through the rotating shaft 53, and then the bevel gear 52 drives the rotating inner ring 42 to rotate through the bevel gear ring 51. During the rotation of the rotating inner ring 42, the water pipe 32 and the nozzle 33 will rotate synchronously with the rotating inner ring 42 to cool the airflow entering the ventilation pipe 1 from different angles, and can wash and attach the solid particles in the airflow to the inner wall of the ventilation pipe 1; when the water volume on the inner wall of the ventilation pipe 1 increases, the water will flow downward along the ventilation pipe 1. To facilitate the discharge of sewage, a drain port 13 is provided on the circumferential direction of the ventilation pipe 1 on the side away from the water inlet 12, that is, when the ventilation pipe 1 is placed horizontally, the water inlet 12 is located at the top of the ventilation pipe 1, and the drain port 13 is located at the bottom of the ventilation pipe 1; in order to discharge the sewage in the ventilation pipe 1 more thoroughly, in the first direction, the inner diameter of the ventilation pipe 1 gradually decreases from the fixed outer ring 41 to the port of the ventilation pipe 1. Therefore, the water flow will flow from the bottom of the ventilation pipe 1 to the fixed outer ring 41, and the drain port 13 is arranged close to the fixed outer ring 41 to facilitate the more thorough discharge of the sewage in the ventilation pipe 1. In this application, a drain port 13 is respectively provided at both ends of the fixed ring close to the ventilation pipe 1, that is, in the first direction, the fixed ring is located between the two drain ports 13.

[0033] Referring to Figure 5 , when the airflow passes through the cooling component 3, in order to remove the solid particles in the airflow more thoroughly, in some embodiments of the present invention, a dust filtering component 6 is further included. In the first direction, the dust filtering component 6 is located on the side of the rotating inner ring 42 away from the air supply component 2. A plurality of dust filtering components 6 are provided in the present disclosure, and the plurality of dust filtering components 6 are sequentially distributed in the first direction; The dust filtering component 6 includes a dust filtering net 61 and a plurality of elastic members 62. The dust filtering net 61 is connected to the water pipe 32 through the elastic members 62; the dust filtering net 61 is circular and is arranged perpendicular to the first direction. Each water pipe 32 is respectively provided with an elastic member 62. One end of the elastic member 62 is connected to the dust filtering net 61, and the other end is connected to the water pipe 32; when the dust filtering net 61 is coaxial with the ventilation pipe 1, each elastic member 62 is in a deformable state that can be restored; when the elastic member 62 is in a normal state, the lengths of the elastic members 62 on each water pipe 32 are different, which can facilitate the dust filtering net 61 to be in an eccentric state in the ventilation pipe 1. Therefore, when the dust filtering net 61 rotates with the water pipe 32, the shaking amplitude will be larger, and the sewage on the dust filtering net 61 can be shaken off to the bottom of the ventilation pipe 1.

[0034] The elastic member 62 includes a second mounting seat 621, a telescopic rod 622, a first rotating shaft 623, a second rotating shaft, and a compression spring 625; the second mounting seat 621 is fixedly connected to the water pipe 32. One end of the telescopic rod 622 is fixedly connected with a first rotating shaft 623, and the other end is fixedly connected with a second rotating shaft. The first rotating shaft 623 is rotatably connected to the second mounting seat 621 around a third axis, and the second rotating shaft is rotatably connected to the dust filtering net 61 around a fourth axis. Both the third axis and the fourth axis are parallel to the first direction; The telescopic rod 622 is perpendicular to the first direction. The telescopic rod 622 includes a fixed rod 6221 fixedly connected to the first rotating shaft 623, and a movable rod 6222 fixedly connected to the second rotating shaft. The movable rod 6222 is slidably connected to the fixed rod 6221 along the length direction of the fixed rod 6221. One end of the compression spring 625 is fixedly connected to the fixed rod 6221, and the other end is fixedly connected to the movable rod 6222. The telescopic direction of the compression spring 625 is parallel to the fixed rod 6221. During the rotation of the water pipe 32, under the action of the compression spring 625, the dust filter net 61 can shake on a plane perpendicular to the first direction, so as to shake off the sewage.

[0035] Referring to Figure 6 , in some embodiments of the present application, the air supply assembly 2 includes a rotating rod 21, blades 22 and a first connecting member 23; the rotating rod 21 is coaxially located in the ventilation pipe 1. In the present disclosure, the air supply assembly 2 includes three first connecting members 23, and the three first connecting members 23 are evenly distributed in the circumferential direction of the ventilation pipe 1. The first connecting member 23 is fixedly connected between the rotating rod 21 and the rotating inner ring 42. Therefore, during the rotation of the rotating inner ring 42, the first connecting member 23 and the rotating rod 21 will rotate synchronously with the rotating inner ring 42; the blades 22 are fixedly connected to the rotating rod 21, so that the blades 22 rotate synchronously with the rotating rod 21.

[0036] The implementation principle of a ventilation and cooling system for coal mines in an embodiment of the present application is as follows: Start the motor 54 to drive the rotating inner ring 42 to rotate through the rotating drive assembly 5. The rotating inner ring 42 will drive the cooling assembly 3 and the air supply assembly 2 to rotate synchronously. The air supply assembly 2 will accelerate the flow of air from the cooling assembly 3 to the side of the air supply assembly 2. During this process, the nozzle 33 sprays water into the ventilation pipe 1 in a rotating manner to cool and remove dust in the ventilation pipe 1. Finally, the water in the ventilation pipe 1 will be discharged through the drain holes.

[0037] The above are all the preferred embodiments of the present application, and the protection scope of the present application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A ventilation and cooling system for coal mines, characterized in that, It includes a ventilation pipe (1), a air supply component (2) and a cooling component (3) arranged in the ventilation pipe (1). The air supply component (2) is used to accelerate the flow of air in the ventilation pipe (1); The pipe length of the ventilation pipe (1) is parallel to the first direction. The cross-section of the ventilation pipe (1) perpendicular to the first direction is annular, and the central axis of the ventilation pipe (1) is the first axis; The cooling component (3) includes: A guiding ring (31), which is coaxially arranged in the ventilation pipe (1), and the guiding ring (31) is rotatably connected to the ventilation pipe (1) around the first axis; A water pipe (32), which is fixedly connected to the guiding ring (31), and the water pipe (32) is parallel to the first direction; A plurality of the water pipes (32) are circumferentially and spaced apart around the ventilation pipe (1); and, A spray head (33), which is fixedly connected to the water pipe (32) and is communicated with the water pipe (32); It also includes: A water supply component (4), which is connected between the water pipe (32) and the ventilation pipe (1) to supply water to the water pipe (32).

2. The ventilation and cooling system for coal mines according to claim 1, characterized in that, The water supply component (4) includes: Two fixed outer rings (41), which are coaxially and fixedly connected to the ventilation pipe (1). The two fixed outer rings (41) are spaced apart in the first direction, and a water storage area (411) is formed between the two fixed outer rings (41); A rotating inner ring (42), which is coaxially located inside the inner circle of the fixed outer ring (41), and the rotating inner ring (42) is rotatably connected to the fixed outer ring (41) around the first axis. One end of the water pipe (32) is sealed, and the other end is fixedly connected to the fixed outer ring (41); The rotating inner ring (42) is respectively provided with a water tank (421) at each position corresponding to the water pipe (32). One end of the water tank (421) is communicated with the water pipe (32), and the other end is communicated with the water storage area (411); and, A rotating sealing ring (43), which is fixedly connected between each fixed outer ring (41) and the rotating inner ring (42) respectively; The ventilation pipe (1) is provided with a water inlet (12) communicated with the water tank (421).

3. A ventilation and cooling system for coal mines according to claim 2, characterized in that, It also includes a rotation driving component (5), and the rotation driving component (5) includes: A bevel gear ring (51), in the first direction, the bevel gear ring (51) is located on the side of the rotating inner ring (42) away from the water pipe (32), and the bevel gear ring (51) is coaxially and fixedly connected to the rotating inner ring (42); A bevel gear (52), which is rotatably connected to the ventilation pipe (1) around the second axis. The second axis is perpendicular to the first direction, and the bevel gear (52) is meshed with the bevel gear ring (51); A rotating shaft (53), one end of the rotating shaft (53) is coaxially and fixedly connected to the bevel gear (52), and the other end passes through the ventilation pipe (1) and extends outside the ventilation pipe (1); A motor (54) is connected between the rotating shaft (53) and the ventilation pipe (1) to drive the rotating shaft (53) to rotate along the ventilation pipe (1).

4. A ventilation and cooling system for coal mines according to claim 3, characterized in that, The air supply assembly (2) includes: A rotating rod (21) coaxially located inside the ventilation pipe (1); Blades (22) fixedly connected to the rotating rod (21); and, A first connecting member (23) fixedly connected between the rotating rod (21) and the rotating inner ring (42).

5. A ventilation and cooling system for coal mines according to any one of claims 2-4, characterized in that, It further includes a dust filtering assembly (6), and the dust filtering assembly (6) includes: A dust filtering net (61) which, in a first direction, is located on the side of the rotating inner ring (42) away from the air supply assembly (2); The dust filtering net (61) is connected to the water pipe (32).

6. The ventilation and cooling system for coal mines according to claim 5, characterized in that, There are multiple dust filtering assemblies (6), and the multiple dust filtering assemblies (6) are sequentially distributed in the first direction.

7. The ventilation and cooling system for coal mines according to claim 5, characterized in that, The dust filtering assembly (6) further includes: Multiple elastic members (62), one end of each elastic member (62) is connected to the dust filtering net (61), and the other end is connected to the water pipe (32); The dust filtering net (61) is circular and is arranged perpendicular to the first direction; When the dust filtering net (61) is coaxial with the ventilation pipe (1), each elastic member (62) is in a deformable state that can be restored.

8. A ventilation and cooling system for coal mines according to claim 7, characterized in that, There are three water pipes (32), and when the elastic members (62) are in a normal state, the lengths of the elastic members (62) on each water pipe (32) are different.

9. A ventilation and cooling system for coal mines according to claim 8, characterized in that, On the circumferential direction of the ventilation pipe (1), a drain port (13) is provided on the side of the ventilation pipe (1) away from the water inlet (12).

10. The ventilation and cooling system for coal mines according to claim 9, characterized in that, The inner diameter of the ventilation pipe (1) gradually decreases in the direction from the fixed outer ring (41) to the port of the ventilation pipe (1).

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