Underground coal mine ventilation and dust removal equipment

Abstract

The present technology belongs to the technical field of coal mining equipment, and specifically discloses an underground coal mining ventilation and dust removal equipment, which comprises two air pipes, three reinforcing rods connected between the air pipes, two fans respectively embedded in the air pipes, a base plate assembled on the air pipes and close to the upper end, a protection box buckled on the base plate, a buckle cover movably assembled on the protection box, two through pipes embedded on the buckle cover, first elastic rubber hoses respectively assembled on the lower ends of the through pipes, second elastic rubber hoses respectively assembled on the upper ends of the air pipes, servo motors respectively assembled on the base plate and located on the two sides of the air pipes, jacks respectively assembled on the driving ends of the servo motors, and assembling discs respectively assembled on the jacks. The underground coal mining ventilation and dust removal equipment automatically replaces the return filtering screen through gas flow sensing, senses the running state of the ventilation system in real time, protects the life safety of underground workers, has a long service life, and does not require workers to frequently handle the dust filtering screen, and is convenient to use.

Description

Technical Field

[0001] This technology belongs to the field of coal mining equipment technology, specifically relating to a coal mine underground coal mining ventilation and dust removal equipment. Background Technology

[0002] During underground coal mining, a large amount of dust is generated underground, necessitating ventilation and dust removal to ensure the safety of workers. Commonly used ventilation and dust removal equipment uses blowers to transport air from the surface to the mine and filters out the poor-quality air from underground before sending it to the surface. Because the ventilation and dust removal equipment has internal filters to filter particulate impurities in the underground air, these impurities become clogged if not cleaned regularly, affecting the efficiency of the ventilation and dust removal equipment. Frequent filter replacements by workers also affect the ventilation effect and make it impossible to monitor the ventilation status in real time, resulting in low safety. While there may already be technical solutions to address the above-mentioned problems, this case aims to provide a replacement or alternative technical solution. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a ventilation and dust removal device for underground coal mining. It solves the problem that in existing underground coal mining operations, due to the large amount of dust present, ventilation and dust removal are necessary to ensure the safety of workers. Common ventilation and dust removal equipment uses blowers to transport air from the surface to the underground, filtering and expelling the poor-quality air from underground to the surface. Because the ventilation and dust removal equipment has internal filters to remove particulate impurities from the underground air, these filters become clogged if not cleaned regularly, affecting the efficiency of the equipment. Frequent filter replacements by workers also impact ventilation effectiveness, and the inability to monitor ventilation status in real time leads to low safety.

[0004] A coal mine underground ventilation and dust removal device includes two air ducts connected by three reinforcing rods. Two fans are embedded in each air duct. A base plate is mounted on each air duct near its upper end. A protective box is fastened to the base plate, and a cover is movably mounted on the protective box. Two through pipes are embedded in the cover. A first elastic rubber hose is mounted on the lower end of each of the two through pipes, and a second elastic rubber hose is mounted on the upper end of each of the two air ducts. Servo motors are mounted on the base plate on both sides of the two air ducts. A top column is mounted on the drive end of each servo motor, and an assembly plate is mounted on each top column. Four dust filters are embedded in each assembly plate, with two dust filters located between each of the first and second elastic rubber hoses.

[0005] Preferably, a protective cover is installed on the lower end of each of the two air ducts, and a protective net is installed inside each of the protective covers. A first gas flow sensor is installed on one of the protective covers.

[0006] Preferably, a second gas flow sensor is mounted on one of the pipes.

[0007] Preferably, the cover is equipped with a shielding frame.

[0008] Preferably, each of the first elastic rubber hoses, each of the second elastic rubber hoses, and each of the dust filters is the same size.

[0009] Preferably, the upper wall of the shield is equipped with two handles.

[0010] This utility model provides a ventilation and dust removal device for underground coal mining, which has the following advantages: This device realizes the automatic replacement of the return filter screen through gas flow sensing, and can sense the operating status of the ventilation system in real time, protecting the life safety of underground workers. It has a long service life, does not require workers to frequently handle the dust filter screen, and is easy to use. Attached Figure Description

[0011] Fig. 1 This is a schematic diagram of the structure of this utility model.

[0012] Fig. 2 This is a side view sectional structural diagram of the present invention.

[0013] Fig. 3 This is a top view cross-sectional structural diagram of the present invention.

[0014] In the diagram: 1-Air duct; 2-Reinforcing rod; 3-Fan; 4-Base plate; 5-Protective box; 6-Closure cover; 7-Pass-through pipe; 8-First elastic rubber hose; 9-Second elastic rubber hose; 10-Servo motor; 11-Top column; 12-Assembly tray; 13-Dust filter; 14-Protective cover; 15-Protective net; 16-First gas flow sensor; 17-Second gas flow sensor; 18-Shielding frame; 19-Handle. Detailed Implementation

[0015] 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.

[0016] Those skilled in the art should connect all electrical components and their compatible power supplies in this case via wires, and should select appropriate controllers according to actual conditions to meet control requirements. The specific connection and control sequence should refer to the working principle described below, where the electrical components are connected in sequence. The detailed connection methods are well-known in the art. The following mainly introduces the working principle and process, without explaining the electrical control.

[0017] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0018] Example: Refer to Figs. 1-3 The coal mine underground ventilation and dust removal equipment includes two air ducts 1, with three reinforcing rods 2 connecting the two air ducts 1. Two fans 3 are embedded in each air duct 1. A base plate 4 is mounted on the two air ducts 1 near their upper ends. A protective box 5 is fastened to the base plate 4, and a cover 6 is movably mounted on the protective box 5. Two through pipes 7 are embedded in the cover 6. A first elastic rubber hose 8 is mounted on the lower end of each of the two through pipes 7, and a second elastic rubber hose 9 is mounted on the upper end of each of the two air ducts 1. Servo motors 10 are mounted on the base plate 4 on both sides of the two air ducts 1. A top column 11 is mounted on the drive end of each servo motor 10, and a mounting bracket is mounted on each top column 11. Each assembly tray 12 is fitted with four dust filters 13, two of which are located between each first elastic rubber hose 8 and each second elastic rubber hose 9. Protective covers 14 are mounted on the lower ends of the two air ducts 1, each containing a protective mesh 15. A first gas flow sensor 16 is mounted on one of the protective covers 14. A second gas flow sensor 17 is mounted on one of the through pipes 7. A shielding bracket 18 is mounted on the cover 6. Each first elastic rubber hose 8, each second elastic rubber hose 9, and each dust filter 13 is the same size. Two handles 19 are mounted on the upper wall of the shielding bracket 18.

[0019] The specific working principle is as follows: Two air ducts 1 are buried underground and connected to each other by reinforcing rods 2. The base plate 4 is located on the ground. During ventilation, the fan 3 in one air duct 1 rotates forward to draw air from the well, while the fan 3 in the other air duct 1 rotates in the opposite direction to draw outside air into the well for ventilation and dust removal. When drawing outside air, the air enters through the pipe 7 and passes through the dust filter 13 on the assembly plate 12 for high and low dust filtration. It then passes through the air duct 1 and is discharged into the well through the protective cover 14 with the first gas flow sensor 16. If the first gas flow sensor 16 detects a decrease in gas flow rate, it indicates that the dust filter 13 has accumulated too much dust. The servo motor 10 drives the top column 11 to rotate the assembly plate 12 to replace the dust filter 13. During the operation of the servo motor 10, the corresponding fan 3 in the air duct 1 is in standby mode. After operation 10 is completed, fan 3 continues to run. When fan 3 in another duct 1 draws air from the well, the air enters the duct 1 through the protective cover 14 and is filtered by the dust filter 13. It is then discharged to the outside through the pipe 7 with the second gas flow sensor 17. The second gas flow sensor 17 is used to sense the gas flow. When the gas flow decreases, the corresponding servo motor 10 runs, driving the assembly plate 12 to rotate and replace the dust filter 13. The first elastic rubber hose 8 and the second elastic rubber hose 9 are elastic, which makes it easy to fit the dust filter 13 tightly and to allow the assembly plate 12 to rotate between the first elastic rubber hose 8 and the second elastic rubber hose 9. The shield 18 is used to protect against rainwater. The handle 19 makes it easy for the staff to open the cover 6 to replace the dust filter 13. The protective net 15 is used for fan 3 in duct 1.

[0020] 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 coal mine underground ventilation and dust removal equipment, comprising two air ducts, characterized in that: Three reinforcing rods (2) connect the two air ducts (1). Two fans (3) are embedded in each air duct (1). A base plate (4) is mounted on the two air ducts (1) near the upper end. A protective box (5) is fastened to the base plate (4). A cover (6) is movably mounted on the protective box (5). Two through pipes (7) are embedded in the cover (6). A first elastic rubber hose (8) is mounted on the lower end of each of the two through pipes (7). A second elastic hose (8) is mounted on the upper end of each of the two air ducts (1). A rubber hose (9) is mounted on the base plate (4) and on both sides of the two air ducts (1). A top post (11) is mounted on the drive end of each servo motor (10). An assembly plate (12) is mounted on each top post (11). Four dust filters (13) are embedded on each assembly plate (12). Two of the dust filters (13) are located between each of the first elastic rubber hoses (8) and each of the second elastic rubber hoses (9).

2. The coal mine underground coal mining ventilation and dust removal equipment according to claim 1, characterized in that: The lower ends of the two air ducts (1) are respectively equipped with protective covers (14), and each of the protective covers (14) is equipped with a protective net (15). One of the protective covers (14) is equipped with a first gas flow sensor (16).

3. The coal mine underground coal mining ventilation and dust removal equipment according to claim 1, characterized in that: One of the pipes (7) is equipped with a second gas flow sensor (17).

4. The coal mine underground coal mining ventilation and dust removal equipment according to claim 1, characterized in that: The cover (6) is equipped with a shield (18).

5. The coal mine underground coal mining ventilation and dust removal equipment according to claim 1, characterized in that: Each of the first elastic rubber hoses (8), each of the second elastic rubber hoses (9), and each of the dust filters (13) is the same size.

6. The coal mine underground coal mining ventilation and dust removal equipment according to claim 4, characterized in that: The upper wall of the shield (18) is fitted with two handles (19).

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