A coal mine underground regulating fan

Abstract

This utility model relates to the field of mining fan technology and discloses an underground regulating fan for coal mines, comprising: a mounting base, an insertion hole on the upper outer wall of the mounting base, an insertion rod passing through the inner side of the insertion hole, an adjusting bolt connected to one inner wall of the insertion hole, and the adjusting bolt extending through to one outer wall of the mounting base, a fan frame welded to the top of the insertion rod, a circular fan frame connected to the inner side of the fan frame via a damping shaft, a cover fixed to the rear end of the fan frame by bolts, and a cover plate fixed to the outer wall of the cover near the fan frame. This underground regulating fan for coal mines is equipped with an atomizing nozzle, which can spray water or air cleaner supplied by a water supply pipe towards the fan blades through pressurization by a liquid pump. This, combined with the rotating fan blades, reduces dust in the mine air, decreasing the number of inhalable particles in the coal mine. Furthermore, the fan's orientation can be freely adjusted according to operational needs through rotation and pitch adjustment, resulting in better applicability.

Description

Technical Field

[0001] This utility model relates to the field of mining fan technology, specifically a coal mine underground regulating fan. Background Technology

[0002] Mining fans are ventilation devices specifically designed for underground working environments such as mines and tunnels. Their main functions are to ensure air circulation, remove harmful gases (such as methane and dust), lower the temperature, and provide fresh air for workers, thus ensuring safe production. Some fans, when used in conjunction with water mist spraying, can reduce the number of inhalable particles in the mine air, preventing pneumoconiosis.

[0003] A search revealed a mine-use adjustable high-efficiency main ventilation fan with publication number CN210050099U, which includes a base welded and fixed to the ventilation duct. This fan is used to achieve adjustable high-efficiency main ventilation, saving labor time. However, this utility model can only actively adjust the ventilation volume of the fan, and it is not easy to adjust the orientation of the fan body. Furthermore, it cannot be used in conjunction with water sources and air cleaners to purify and regulate the underground air. Therefore, we propose an underground adjustable fan for coal mines. Utility Model Content

[0004] The purpose of this invention is to provide an underground regulating fan for coal mines to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a coal mine underground regulating fan, comprising:

[0006] The mounting base has an insertion hole on its upper outer wall, and an insertion rod passes through the inner side of the insertion hole. An adjusting bolt is connected to one inner wall of the insertion hole and extends through to one outer wall of the mounting base. A fan frame is welded to the top of the insertion rod. A circular fan frame is connected to the inner side of the fan frame through a damping shaft. A cover is fixed to the rear end of the fan frame with bolts, and a cover plate is fixed to the outer wall of the cover near the fan frame.

[0007] A drive motor is bolted to the inner center of the cover, and the output shaft of the drive motor passes through a bearing to the outer wall of the cover away from the cover. The output shaft of the drive motor is connected to a fan blade, which is placed inside the fan frame. A liquid pump is bolted to the upper inner end of the cover. The input end of the liquid pump is connected to a water supply pipe, which passes through to the outer wall of the rear end of the cover. The output end of the liquid pump is connected to an annular water supply ring. An atomizing nozzle is connected to the outer wall of the water supply ring near the cover, and the output end of the atomizing nozzle passes through to the outer wall of the cover near the fan frame.

[0008] Furthermore, the external dimensions of the insertion rod and the insertion hole are matched, and the adjusting bolt and the insertion hole form a threaded connection.

[0009] Furthermore, the fan bracket is rotatably connected to the mounting base via a plug rod and a socket, and the plug rod is engaged with the socket via an adjusting bolt.

[0010] Furthermore, the cover and fan frame are rotatably connected to the fan frame, and the central axes of the cover, cover plate and fan frame coincide. The fan blades are rotatably connected to the fan frame through the output shaft of the drive motor, and the fan frame and fan blades form an enclosing structure.

[0011] Furthermore, the atomizing nozzles are evenly distributed at equal intervals along one side of the outer wall of the water supply ring, and the water supply pipe is connected to the atomizing nozzles through the liquid pump and the water supply ring.

[0012] Furthermore, the atomizing nozzle and the fan frame are connected, and the output direction of the atomizing nozzle is parallel to the central axis of the fan blade.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] The underground regulating fan used in this coal mine is equipped with atomizing nozzles. The atomizing nozzles can spray water or air cleaner delivered by the water supply pipe towards the fan blades through the pressurization of the liquid pump. In conjunction with the rotation of the fan blades, the air in the mine is dusted, reducing the number of inhalable particles in the coal mine. Moreover, the fan frame can be freely adjusted according to the operation requirements by rotating and tilting, making it more adaptable. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main structure of the fan in operation according to this utility model;

[0016] Figure 2 This is a schematic diagram of the disassembled structure of the cover portion of this utility model;

[0017] Figure 3 This is a structural diagram showing the disassembled state of the fan bracket and mounting base of this utility model.

[0018] In the diagram: 1. Mounting base; 2. Insertion hole; 3. Insertion rod; 4. Adjusting bolt; 5. Fan bracket; 6. Fan frame; 7. Cover; 8. Cover plate; 9. Drive motor; 10. Fan blade; 11. Liquid pump; 12. Water supply pipe; 13. Water supply ring; 14. Atomizing nozzle. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] This utility model provides an improved version of an underground regulating fan for coal mines. Please refer to [link / reference]. Figures 1-3 The system includes: a mounting base 1, with an insertion hole 2 on the upper outer wall of the mounting base 1; an insertion rod 3 passing through the inner side of the insertion hole 2; the insertion rod 3 matching the outer dimensions of the insertion hole 2; an adjusting bolt 4 connected to one inner wall of the insertion hole 2, extending through to one outer wall of the mounting base 1; a threaded connection between the adjusting bolt 4 and the insertion hole 2; and a snap-fit ​​connection between the insertion rod 3 and the insertion hole 2. A fan frame 5 is welded to the top of the insertion rod 3, and the fan frame 5 is rotatably connected to the mounting base 1 via the insertion rod 3 and the insertion hole 2. A circular fan frame 6 is connected to the inner side of the fan frame 5 via a damping shaft, which facilitates fan movement. The frame 6 is adjusted to a suitable angle to increase the adjustment range of the fan frame 6 while maintaining the stable orientation of the fan frame 6. The rear end of the fan frame 6 is fixed with a cover 7 by bolts. The cover 7 and the fan frame 6 form a rotatable connection with the fan frame 5. A cover plate 8 is fixed to the outer wall of the cover 7 near the fan frame 6. The central axis of the cover 7, the cover plate 8 and the fan frame 6 are aligned. The inserted rod 3 can be rotated and adjusted in the insertion hole 2. The adjustment angle is controlled by adjusting the tightness of the adjusting bolt 4. With the fan frame 6 tilting inside the fan frame 5, the blowing direction of the adjustable fan can be adjusted according to the needs, making it more suitable for use in the mine.

[0021] Please see Figures 1-2A coal mine underground regulating fan includes: a drive motor 9 bolted to the inner center of a cover 7, with the output shaft of the drive motor 9 passing through a bearing to the outer wall of the cover 8 away from the cover 7; a fan blade 10 connected to the output shaft of the drive motor 9, the fan blade 10 being disposed inside a fan frame 6, and the fan blade 10 being rotatably connected to the fan frame 6 via the output shaft of the drive motor 9, while the fan frame 6 and the fan blade 10 forming an enclosing structure; a liquid pump 11 bolted to the upper inner end of the cover 7, the input end of the liquid pump 11 being connected to a water supply pipe 12, the water supply pipe 12 passing through to the rear outer wall of the cover 7; and an annular water delivery ring 13 connected to the output end of the liquid pump 11, the water delivery ring 13 being located near the cover 8. The outer wall is connected to an atomizing nozzle 14, which is evenly distributed at equal intervals along one side of the outer wall of the water supply ring 13. The water supply pipe 12 is connected to the atomizing nozzle 14 through the liquid pump 11 and the water supply ring 13. The output end of the atomizing nozzle 14 extends to the outer wall of the cover plate 8 near the fan frame 6. The atomizing nozzle 14 is connected to the fan frame 6. The output direction of the atomizing nozzle 14 is parallel to the central axis of the fan blade 10. The fan blade 10, driven by the drive motor 9, drives air circulation in the mine. The atomizing nozzle 14 breaks up the delivered water or air cleaner and sprays it into the mine, which can effectively reduce dust and reduce the suspended inhalable particles in the mine air, thereby improving the air quality in the coal mine.

[0022] Working Principle: For this type of underground regulating fan used in coal mines, the operator first installs the mounting base 1 at a suitable ventilation point in the mine using fasteners. The fan frame 5 and fan blade 6 are inserted into the insertion hole 2 of the mounting base 1 via the insertion rod 3. When the adjusting bolt 4 is loosened, the orientation of the fan frame 5 and fan blade 6 can be adjusted by rotating the insertion rod 3 within the insertion hole 2. Simultaneously, the pitch angle of the fan blade 6 inside the fan frame 5 can be adjusted using the stabilizing adjustment function of the damping bearing, and remains stable after adjustment. This allows the orientation of the fan blade 6 to be adjusted and stabilized over a wide range within the mine, providing better applicability to different operational needs. Subsequently, when ventilation is required, the operator can start the drive motor 9 (model: Linghan Fan-G71A), which drives the fan blade 1. The fan blade 10 rotates within the fan frame 6, which protects the fan blade 10 and ensures stable rotation. It also provides safety protection for other personnel and equipment within the mine, preventing accidental contact and damage. Finally, when there is excessive dust or inhalable particles in the mine, water or air purifier can be connected to the water supply pipe 12. The input water or air purifier is pressurized by the liquid pump 11 (model: Xinweicheng-CSP) and atomized from the atomizing nozzle 14 on the water supply ring 13. Combined with the secondary atomization of the water and air purifier by the fan blade 10, this achieves efficient and stable spraying of the water and air purifier into the mine air, rapidly reducing dust and adsorbing inhalable particles, thereby improving air quality during mine operations. This also allows for the fan's own orientation adjustment and the purification of the mine air.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A regulating fan for underground coal mines, characterized in that, include: Mounting base (1), the upper outer wall of the mounting base (1) is provided with a socket (2), the inner side of the socket (2) is provided with a plug rod (3), the inner side of the socket (2) is connected with an adjusting bolt (4), and the adjusting bolt (4) extends to the outer side of the mounting base (1). The top of the plug rod (3) is welded with a fan frame (5), the inner side of the fan frame (5) is connected with a circular fan frame (6) through a damping shaft, the rear end of the fan frame (6) is fixed with a cover (7) by bolts, and the outer side of the cover (7) near the fan frame (6) is fixed with a cover plate (8). A drive motor (9) is bolted to the inner middle of the cover (7), and the output shaft of the drive motor (9) passes through the cover plate (8) to the outer wall away from the cover (7) via a bearing. The output shaft of the drive motor (9) is connected to a fan blade (10), and the fan blade (10) is placed inside the fan frame (6). A liquid pump (11) is bolted to the upper inner side of the cover (7). The input end of the liquid pump (11) is connected to a water supply pipe (12), and the water supply pipe (12) passes through the outer wall of the rear end of the cover (7). The output end of the liquid pump (11) is connected to an annular water supply ring (13). The outer wall of the water supply ring (13) near the cover plate (8) is connected to an atomizing nozzle (14), and the output end of the atomizing nozzle (14) passes through the outer wall of the cover plate (8) near the fan frame (6).

2. The underground regulating fan for coal mines according to claim 1, characterized in that: The external dimensions of the insertion rod (3) and the insertion hole (2) are matched, and the adjusting bolt (4) and the insertion hole (2) are connected by a thread.

3. A coal mine underground regulating fan according to claim 1, characterized in that: The fan frame (5) is rotatably connected to the mounting base (1) via the insert rod (3) and the socket (2), and the insert rod (3) is engaged with the socket (2) via the adjusting bolt (4).

4. A coal mine underground regulating fan according to claim 1, characterized in that: The cover (7) and the fan frame (6) are rotatably connected to the fan frame (5), and the central axis of the cover (7), the cover plate (8) and the fan frame (6) coincide. The fan blade (10) is rotatably connected to the fan frame (6) through the output shaft of the drive motor (9), and the fan frame (6) and the fan blade (10) form an enclosing structure.

5. A coal mine underground regulating fan according to claim 1, characterized in that: The atomizing nozzles (14) are evenly distributed at equal intervals along one side of the outer wall of the water supply ring (13), and the water supply pipe (12) is connected to the atomizing nozzles (14) through the liquid pump (11) and the water supply ring (13).

6. A coal mine underground regulating fan according to claim 1, characterized in that: The atomizing nozzle (14) and the fan frame (6) are connected, and the output direction of the atomizing nozzle (14) is parallel to the central axis of the fan blade (10).

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