A coal mine underground ventilation device

Abstract

This utility model discloses an underground ventilation device for coal mine mining, belonging to the field of underground ventilation technology. It includes a base plate, a filter box fixedly connected to the top surface of the base plate, an exhaust pipe fixedly sleeved on the top of the filter box, an exhaust fan fitted inside the exhaust pipe, a ventilation pipe fixedly sleeved on the side of the filter box, and a connecting flange fixedly sleeved at the end of the ventilation pipe. In this utility model, dust in the air is filtered and collected through a filter bag inside the filter box. A servo motor drives a rotating rod and a striking rod to rotate, and the striking rod strikes the side of the filter bag, causing dust adhering to the inner wall of the filter bag to fall downwards and accumulate at the bottom of the filter bag's inner cavity. This ensures the effective filtration of dust by the side of the filter bag. The use of the filter bag avoids frequent dust handling, and the striking rod prevents the filter bag from becoming clogged, making it highly practical.

Description

Technical Field

[0001] This utility model relates to the field of underground ventilation technology, and more specifically, to an underground ventilation device for coal mining. Background Technology

[0002] Mine ventilation refers to the process of introducing fresh air into the mine to increase oxygen concentration, thereby diluting and removing toxic and harmful gases and dust. The basic tasks of mine ventilation are to supply sufficient fresh air underground to meet the oxygen needs of personnel; to dilute harmful gases and dust underground to ensure safe production; and to regulate the underground climate to create a good working environment.

[0003] A search revealed a utility model patent with publication number CN220167975U, which discloses an underground ventilation device for coal mining. The device includes a ventilation pipe with a first connecting plate at one end and a connecting pipe with a second connecting plate at the other end. A connecting mechanism is provided between the ventilation pipe and the connecting pipe. The connecting mechanism includes a first connecting plate with multiple sets of arc-shaped grooves on its surface and a second connecting plate with multiple sets of connecting members fixedly connected to its surface. The connecting members correspond to the arc-shaped grooves. The patent aligns the connecting members on the surface of the second connecting plate with one end of the arc-shaped groove on the first connecting plate. The connecting member is inserted into the arc-shaped groove, and then the connecting pipe is rotated to move the connecting member to the other end of the arc-shaped groove. Because the two ends of the arc-shaped groove are different sizes, when the connecting member moves to the smaller end, it fixes the first and second connecting plates together, thus completing the connection between the ventilation pipe and the connecting pipe, making the installation of the ventilation device relatively simple. However, the above-mentioned patent still has the following shortcomings: Although the filter screen frame can be removed to clean the filter screen, there will also be dust at the mine entrance, which makes the filter screen very easy to get clogged, and the convenience of frequent cleaning is not good. Therefore, we propose an underground ventilation device for coal mining. Utility Model Content

[0004] In view of the problems existing in the prior art, the purpose of this utility model is to provide an underground ventilation device for coal mining.

[0005] To solve the above problems, the present invention adopts the following technical solution: an underground ventilation device for coal mining, comprising a base plate, a filter box fixedly connected to the top surface of the base plate, an exhaust pipe fixedly sleeved on the top of the filter box, an exhaust fan sleeved in the inner cavity of the exhaust pipe, a ventilation pipe fixedly sleeved on the side of the filter box, a connecting flange fixedly sleeved at the end of the ventilation pipe, an external threaded ring seat fixedly connected to the top surface of the inner cavity of the filter box, an internal threaded cylinder installed on the outer thread of the external threaded ring seat, a filter bag fixedly connected to the bottom surface of the internal threaded cylinder, multiple actuating blocks provided on the side of the internal threaded cylinder, and two striking mechanisms provided in the inner cavity of the filter box.

[0006] As a preferred embodiment of this utility model, the striking mechanism includes a servo motor fixedly installed on the top surface of the inner cavity of the filter box, the output shaft of the servo motor being fixedly connected to a rotating rod via a coupling, and multiple striking rods being fixedly connected to the side of the rotating rod.

[0007] As a preferred embodiment of this utility model, the bottom surface of the external threaded ring seat is fixedly connected to a plurality of inner support rods, and the bottom ends of the plurality of inner support rods are fixedly connected to inner support rings. The outer surfaces of the inner support rods and inner support rings are in contact with the inner wall of the filter bag.

[0008] As a preferred embodiment of this utility model, a control panel is fixedly installed on the inner wall of the filter box, and the control panel is electrically connected to the exhaust fan and the servo motor respectively.

[0009] As a preferred embodiment of this utility model, the filter box is hinged to a sealing door on the front, and a filter screen is provided at the end of the air duct.

[0010] In a preferred embodiment of the present invention, a first bracket is fixedly connected to the top surface of the base plate, the top end of the first bracket is fixedly sleeved with the air duct, and a second bracket is fixedly connected to the top surface of the base plate, the top end of the second bracket is fixedly sleeved with the ventilation duct.

[0011] Compared with the prior art, the advantages of this utility model are as follows: In this utility model, the filter bag in the inner cavity of the filter box filters and collects dust in the air, and the servo motor drives the rotating rod and the striking rod to rotate. The striking rod strikes the side of the filter bag, causing the dust attached to the inner wall of the filter bag to fall downward and accumulate at the bottom of the inner cavity of the filter bag, ensuring the filtration effect of the side of the filter bag on dust. The use of the filter bag can avoid frequent dust handling, and the striking rod can prevent the filter bag from being blocked, making it highly practical. Attached Figure Description

[0012] Figure 1 is a schematic diagram of the overall structure of this utility model.

[0013] Figure 2 is a schematic diagram of the internal structure of the filter box of this utility model.

[0014] Figure 3 is an overall exploded view of this utility model.

[0015] Figure 4 is a schematic diagram of the structure of the striking rod of this utility model.

[0016] The following are the labels in the diagram: 1. Base plate; 2. Filter box; 3. Air duct; 4. Air fan; 5. Ventilation duct; 6. Connecting flange; 7. External threaded ring seat; 8. Internal threaded cylinder; 9. Filter bag; 10. Beating mechanism; 11. Servo motor; 12. Rotating rod; 13. Beating rod; 14. Inner support rod; 15. Inner support ring; 16. Control panel; 17. Actuating block; 18. Sealing door; 19. First bracket; 20. Second bracket; 21. Filter screen. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0018] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0019] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Example 1

[0020] As shown in Figures 1 to 4, an underground ventilation device for coal mining includes a base plate 1. A filter box 2 is fixedly connected to the top surface of the base plate 1. An air duct 3 is fixedly sleeved on the top of the filter box 2. An air duct fan 4 is fitted inside the air duct 3. A ventilation pipe 5 is fixedly sleeved on the side of the filter box 2. A connecting flange 6 is fixedly sleeved at the end of the ventilation pipe 5. The connecting flange 6 is used to connect with other pipes to guide air to different locations underground. An external threaded ring seat 7 is fixedly connected to the top surface of the inner cavity of the filter box 2. An internal threaded cylinder 8 is installed on the outer thread of the external threaded ring seat 7. A filter bag 9 is fixedly connected to the bottom surface of the internal threaded cylinder 8. Multiple levers 17 are provided on the side of the internal threaded cylinder 8. The levers 17 are used to move the internal threaded cylinder 8. Two striking mechanisms 10 are provided inside the filter box 2. Multiple internal support rods 14 are fixedly connected to the bottom surface of the external threaded ring seat 7. An inner support ring 15 is fixedly connected to the bottom end of the filter box 2. The outer sides of the inner support rod 14 and the inner support ring 15 are in contact with the inner wall of the filter bag 9. A sealing door 18 is hinged to the front of the filter box 2. A sealing strip can be installed between the sealing door 18 and the filter box 2 for sealing. A filter screen 21 is installed at the end of the air duct 3. The filter screen 21 is used to filter and block larger debris such as leaves and branches. A first bracket 19 is fixedly connected to the top surface of the bottom plate 1. The top of the first bracket 19 is fixedly sleeved with the air duct 3. The first bracket 19 is used to support the air duct 3. A second bracket 20 is fixedly connected to the top surface of the bottom plate 1. The top of the second bracket 20 is fixedly sleeved with the ventilation pipe 5. The second bracket 20 is used to support the ventilation pipe 5. Example 2

[0021] Based on Embodiment 1, as shown in Figures 2 and 4, the tapping mechanism 10 includes a servo motor 11 fixedly installed on the top surface of the inner cavity of the filter box 2. The output shaft of the servo motor 11 is fixedly connected to a rotating rod 12 via a coupling. Multiple tapping rods 13 are fixedly connected to the side of the rotating rod 12. The servo motor 11 drives the rotating rod 12 and the tapping rods 13 to rotate, and the tapping rods 13 tap the side of the filter bag 9 to knock the dust filtered from the inner wall of the filter bag 9 to the bottom of the inner cavity of the filter bag 9, thus ensuring its filtration effect. Example 3

[0022] Based on Embodiment 1 and Embodiment 2, as shown in Figures 2 and 4, a control panel 16 is fixedly installed on the inner wall of the filter box 2. The control panel 16 is electrically connected to the exhaust fan 4 and the servo motor 11 respectively. The control panel 16 is used to control the exhaust fan 4 and the servo motor 11. In addition, the power supply of the peripheral device is used to power the control panel 16, the exhaust fan 4 and the servo motor 11. This is the prior art.

[0023] It should be noted that this utility model is an underground ventilation device for coal mine mining. In use, starting the induced draft fan 4 generates suction at the end of the induced draft pipe 3. This suction draws external air into the filter bag 9 inside the filter box 2. The filter bag 9 filters dust from the air, and the filtered air enters the inner cavity of the filter box 2 through the filter holes on the filter bag 9. The air inside the filter box 2 is then introduced into the mine through the ventilation pipe 5 and external pipes, thus achieving underground ventilation. Additionally, starting the servo motor 11 drives the rotating rod 12 and the striking rod 13 to rotate. The striking rod 13 strikes the side of the filter bag 9, causing dust adhering to the inner wall of the filter bag 9 to fall downwards and accumulate at the bottom of the inner cavity of the filter bag 9, ensuring the effective filtration of dust by the side of the filter bag 9. When there is some dust in the filter bag, open the sealing door 18 and turn the lever 17 to rotate the internal threaded cylinder 8, so that the internal threaded cylinder 8 and the filter bag 9 can be removed from the external threaded ring seat 7 to remove the dust in the filter bag 9.

[0024] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model based on the technical solution and its improved concept should be covered within the protection scope of the present utility model.

Claims

1. A coal mine underground ventilation device, comprising a base plate (1), characterized in that: A filter box (2) is fixedly connected to the top surface of the base plate (1). An air duct (3) is fixedly sleeved on the top of the filter box (2). An air duct fan (4) is sleeved in the inner cavity of the air duct (3). A ventilation pipe (5) is fixedly sleeved on the side of the filter box (2). A connecting flange (6) is fixedly sleeved at the end of the ventilation pipe (5). An external threaded ring seat (7) is fixedly connected to the top surface of the inner cavity of the filter box (2). An internal threaded cylinder (8) is installed on the outer thread of the external threaded ring seat (7). A filter bag (9) is fixedly connected to the bottom surface of the internal threaded cylinder (8). Multiple lever blocks (17) are provided on the side of the internal threaded cylinder (8). Two knocking mechanisms (10) are provided in the inner cavity of the filter box (2).

2. The underground ventilation device for coal mining according to claim 1, characterized in that: The striking mechanism (10) includes a servo motor (11) fixedly installed on the top surface of the inner cavity of the filter box (2). The output shaft of the servo motor (11) is fixedly connected to a rotating rod (12) via a coupling. Multiple striking rods (13) are fixedly connected to the side of the rotating rod (12).

3. The underground ventilation device for coal mining according to claim 1, characterized in that: The bottom surface of the external threaded ring seat (7) is fixedly connected to a plurality of inner support rods (14), and the bottom ends of the plurality of inner support rods (14) are fixedly connected to an inner support ring (15). The outer surfaces of the inner support rods (14) and the inner support ring (15) are in contact with the inner wall of the filter bag (9).

4. The underground ventilation device for coal mining according to claim 2, characterized in that: The inner wall of the filter box (2) is fixedly installed with a control panel (16), which is electrically connected to the exhaust fan (4) and the servo motor (11).

5. The underground ventilation device for coal mining according to claim 1, characterized in that: The filter box (2) is hinged to a sealing door (18) on the front, and the end of the air duct (3) is provided with a filter screen (21).

6. The underground ventilation device for coal mining according to claim 1, characterized in that: The top surface of the base plate (1) is fixedly connected to a first bracket (19), the top end of the first bracket (19) is fixedly sleeved with the air duct (3), and the top surface of the base plate (1) is fixedly connected to a second bracket (20), the top end of the second bracket (20) is fixedly sleeved with the ventilation duct (5).

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