Gas tunnel ventilation detection device with early warning function

Abstract

The utility model discloses a kind of gas tunnel ventilation detection equipment with early warning function, including ventilation pipeline and the alarm of setting in the outer side of ventilation pipeline, the inner wall of ventilation pipeline is fixedly connected with methane sensor and filter disc, first rotating shaft is worn on ventilation pipeline, the center of filter disc is rotatably connected with the second rotating shaft of the transmission connection of first rotating shaft, one end of second rotating shaft is provided with dehumidification mechanism, two air exchange fan blades are peripherally arranged on second rotating shaft, two air exchange fan blades are located at the two sides of filter disc respectively;Dehumidification mechanism includes dehumidification ring and rotating rod, and the anti-clogging mechanism that avoids filter disc blockage is provided on rotating rod.The utility model increases the air flowability inside ventilation pipeline by setting dehumidification mechanism and air exchange fan blade, and reduce the humidity in tunnel, reduce the influence of humidity to equipment;By setting anti-clogging mechanism, it is convenient to reduce the blockage situation of filter disc gap by vibration, and it is practical.

Description

Technical Field

[0001] This utility model belongs to the field of gas tunnel ventilation detection technology, specifically relating to a gas tunnel ventilation detection device with early warning function. Background Technology

[0002] Gas tunnel ventilation detection equipment is used to monitor air quality and gas concentration in tunnels to ensure the safe operation of tunnel ventilation systems. Since gas leaks can lead to explosions, real-time monitoring and early warning systems are particularly important. Existing technologies typically rely on sensors and alarm systems, but the stability and reliability of these devices remain problematic under complex environments such as high pressure, vibration, and high temperature. To address these issues, it is essential to develop more accurate and durable detection equipment to improve tunnel safety and reduce potential accident risks.

[0003] Chinese patent CN219412647U discloses a coal mine ventilation device with gas detection function, including a ventilation duct. A servo motor is detachably installed on one side of the outer end of the ventilation duct. The motor shaft of the servo motor extends through the ventilation duct, and a first bevel gear is fixedly connected to the motor shaft. A filter disc is detachably installed inside the ventilation duct, and a connection hole is opened at the center of the filter disc. This patent uses the servo motor to drive the first and second bidirectional ventilation fan blades to rotate, thereby accelerating the ventilation of the ventilation duct. At the same time, a cleaning brush rotates along with the first and second bidirectional ventilation fan blades to clean the dust adsorbed on the surface of the filter disc. Thus, the filter disc not only prevents dust from clogging the ventilation duct and affecting ventilation, but also prevents dust from blocking the methane sensor and affecting gas detection. As a result, the methane sensor can issue an early warning, improving safety.

[0004] However, in the humid gas tunnel environment, the equipment is prone to problems such as short circuits, sensor malfunctions, or material corrosion, which affect the long-term stability and detection and early warning effect of the equipment. Therefore, we propose a gas tunnel ventilation detection device with early warning function. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a gas tunnel ventilation detection device with early warning function, which addresses the shortcomings of the prior art. The device has a simple structure and reasonable design. By setting up a dehumidification mechanism and ventilation fan blades, it increases the air flow inside the ventilation duct and reduces the humidity in the tunnel, thus mitigating the impact of humidity on the equipment. By setting up an anti-clogging mechanism, it is easy to reduce the clogging of the filter disc gaps through vibration. It is highly practical and easy to promote and use.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a gas tunnel ventilation detection device with early warning function, including a ventilation duct and an alarm set on the outer side of the ventilation duct. A methane sensor and a filter disc are fixedly connected to the inner wall of the ventilation duct. A first rotating shaft is passed through the ventilation duct. A second rotating shaft that is rotatably connected to the center of the filter disc is driven by the first rotating shaft. A dehumidification mechanism is set at one end of the second rotating shaft. Two ventilation fan blades are arranged circumferentially on the second rotating shaft. The two ventilation fan blades are respectively located on both sides of the filter disc. The dehumidification mechanism includes a dehumidification ring and a rotating rod connected to one end of the second rotating shaft. The outer ring surface of the dehumidification ring is fixedly connected to the inner wall of the ventilation duct, and the rotating rod is provided with an anti-clogging mechanism to prevent the filter disc from clogging.

[0007] Furthermore, a motor is provided at one end of the first rotating shaft that extends out of the ventilation duct. The motor is installed on the outer wall of the ventilation duct. A first gear is provided at the other end of the first rotating shaft. A second gear is provided on the second rotating shaft. Both the first gear and the second gear are bevel gears and mesh with each other.

[0008] Furthermore, a connecting plate is provided at the other end of the second rotating shaft, and a brush is provided on the connecting plate. The brush is located between a bidirectional fan blade and a filter disc and abuts against the outer surface of the filter disc.

[0009] Furthermore, the inner wall of the dehumidification ring is fixedly connected with multiple arc-shaped strips, and the outer surface of the rotating rod is fixedly connected with multiple connecting rods. Each of the multiple connecting rods is fixedly connected to a pressing block at the end away from the rotating rod, and the arc-shaped strips are located on the movement trajectory of the pressing block.

[0010] Furthermore, the anti-clogging mechanism includes multiple L-shaped rods and a striking rod disposed on the L-shaped rods. One end of each L-shaped rod is fixedly connected to the outer surface of the rotating rod, and the other end of each L-shaped rod is fixedly connected to a support plate. A fixing plate and a baffle are respectively disposed at both ends of the fixing rod. The fixing plate is fixedly connected to the inner wall of the ventilation duct. A movable plate is slidably sleeved on the fixing rod. A spring is disposed between the movable plate and the fixing plate. A support rod is fixedly connected to the side of the movable plate. The striking rod is fixedly connected to the end of the support rod near the filter disc.

[0011] Furthermore, semicircular blocks are provided on the opposing surfaces of the support plate and the moving plate, and the movement trajectories of the semicircular blocks of the support plate and the moving plate coincide.

[0012] This utility model has the following advantages compared with the prior art: 1. This utility model is simple and quick to operate. Dehumidification can ensure the accuracy of air quality sensors, improve the accuracy of gas concentration monitoring and the reliability of the early warning system. By setting up a dehumidification mechanism and ventilation fan blades, the ventilation fan blades increase the air flow inside the ventilation duct, and the dehumidification ring absorbs the moisture inside the ventilation duct, reducing the humidity in the tunnel and preventing sensors and circuits from getting damp and short-circuited or corroded. This reduces the impact of moisture on the equipment and extends the service life of the equipment. It is highly practical.

[0013] 2. This utility model incorporates an anti-clogging mechanism. When the semicircular block of the support plate contacts the semicircular block of the moving plate, the moving plate will cause the spring to stretch. When the semicircular block of the support plate separates from the semicircular block of the moving plate, the spring will cause the moving plate to return to its original position through its own elasticity. This process repeats continuously, causing the striking rod to intermittently strike the filter disc. By vibrating the filter disc, the clogging of the filter disc gaps is reduced. This allows for secondary vibration cleaning on top of brush cleaning of the filter disc, making it easier to promote and use.

[0014] In summary, this utility model has a simple structure and reasonable design. By setting up a dehumidification mechanism and ventilation fan blades, it increases the airflow inside the ventilation duct and reduces the humidity in the tunnel, thus mitigating the impact of humidity on the equipment. By setting up an anti-clogging mechanism, it is easy to reduce the clogging of the filter disc gaps through vibration. It is highly practical and easy to promote and use.

[0015] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] Figure 2 This is a schematic diagram of the combined structure of the filter disc and the ventilation fan blades of this utility model.

[0018] Figure 3 This is a schematic diagram of the dehumidification mechanism of this utility model.

[0019] Figure 4 This is a schematic diagram of the anti-clogging mechanism of this utility model.

[0020] Figure 5 This is a schematic diagram of the anti-clogging mechanism and filter disc of this utility model.

[0021] Explanation of reference numerals in the attached figures: 1. Ventilation duct; 2. Alarm; 3. Methane sensor; 4. Dehumidification mechanism; 41. Dehumidification ring; 42. Arc strip; 43. Rotating rod; 44. Connecting rod; 45. Squeezing block; 5. Anti-clogging mechanism; 51. L-shaped rod; 52. Support plate; 53. Fixing plate; 54. Fixing rod; 55. Baffle; 56. Moving plate; 57. Support rod; 58. Striking rod; 59. Spring; 6. Filter disc; 7. First rotating shaft; 8. First gear; 9. Second rotating shaft; 10. Second gear; 11. Bidirectional fan blade; 12. Connecting plate; 13. Brush; 14. Motor. Detailed Implementation

[0022] like Figures 1 to 5 As shown, this utility model includes a ventilation duct 1 and an alarm 2 disposed on the outer side of the ventilation duct 1. A methane sensor 3 and a filter disc 6 are fixedly connected to the inner wall of the ventilation duct 1. A first rotating shaft 7 passes through the ventilation duct 1. A second rotating shaft 9, which is rotatably connected to the center of the filter disc 6 and is driven by the first rotating shaft 7, is provided at one end of the second rotating shaft 9. Two ventilation fan blades 11 are arranged circumferentially on the second rotating shaft 9. The two ventilation fan blades 11 are respectively located on both sides of the filter disc 6.

[0023] The dehumidification mechanism 4 includes a dehumidification ring 41 and a rotating rod 43 connected to one end of the second rotating shaft 9. The outer ring surface of the dehumidification ring 41 is fixedly connected to the inner wall of the ventilation duct 1. The rotating rod 43 is provided with an anti-clogging mechanism 5 to prevent the filter disc 6 from clogging.

[0024] In actual use, the methane sensor 3 and the alarm 2 are connected by a wire and a controller. When the methane sensor 3 detects that the methane gas concentration in the ventilation duct 1 exceeds the threshold, the controller receives the signal and controls the alarm 2 to sound an alarm.

[0025] It should be noted that the ventilation duct 1 is a hollow cylindrical structure, and the ventilation fan blade 11 is a bidirectional rotating fan blade.

[0026] like Figure 2 As shown, in this embodiment, a motor 14 is provided at one end of the first rotating shaft 7 that extends out of the ventilation duct 1. The motor 14 is installed on the outer wall of the ventilation duct 1. A first gear 8 is provided at the other end of the first rotating shaft 7. A second gear 10 is provided on the second rotating shaft 9. The first gear 8 and the second gear 10 are both bevel gears and mesh with each other.

[0027] In actual use, the second gear 10 and the filter disc 6 are located between the two ventilation fan blades 11. By increasing the distance between the two ventilation fan blades 11, the range of gas flow in the ventilation duct 1 is enhanced.

[0028] In this embodiment, a connecting plate 12 is provided at the other end of the second rotating shaft 9, and a brush 13 is provided on the connecting plate 12. The brush 13 is located between a bidirectional fan blade 11 and a filter disc 6 and abuts against the outer surface of the filter disc 6.

[0029] In actual use, the brush 13 facilitates basic cleaning of the outer surface of the filter disc 6, preventing dust and particles from clogging the filter disc 6 in large quantities.

[0030] like Figure 3 As shown, in this embodiment, a plurality of arc-shaped strips 42 are fixedly connected to the inner wall of the dehumidification ring 41, and a plurality of connecting rods 44 are fixedly connected to the outer surface of the rotating rod 43. Each of the connecting rods 44 is fixedly connected to a pressing block 45 at the end away from the rotating rod 43, and the arc-shaped strips 42 are located on the movement trajectory of the pressing block 45.

[0031] In practical use, dehumidification can ensure the accuracy of air quality sensors, improve the precision of gas concentration monitoring and the reliability of the early warning system. By setting up a dehumidification mechanism 4 and ventilation fan blades 11, the ventilation fan blades 11 increase the airflow inside the ventilation duct 1, while the dehumidification ring 41 absorbs the moisture inside the ventilation duct 1, reducing the humidity in the tunnel and preventing sensors and circuits from getting damp and short-circuited or corroded. This reduces the impact of moisture on the equipment, extends the service life of the equipment, and is highly practical.

[0032] like Figure 4 and Figure 5 As shown, in this embodiment, the anti-clogging mechanism 5 includes multiple L-shaped rods 51 and a striking rod 58 disposed on the L-shaped rods 51. One end of the L-shaped rod 51 is fixedly connected to the outer side of the rotating rod 43, and the other end of the L-shaped rod 51 is fixedly connected to a support plate 52. The two ends of the fixed rod 54 are respectively provided with a fixed plate 53 and a baffle 55. The fixed plate 53 is fixedly connected to the inner wall of the ventilation duct 1. A movable plate 56 is slidably sleeved on the fixed rod 54. A spring 59 is disposed between the movable plate 56 and the fixed plate 53. A support rod 57 is fixedly connected to the side of the movable plate 56. The striking rod 58 is fixedly connected to the end of the support rod 57 near the filter disc 6.

[0033] In this embodiment, semicircular blocks are provided on the opposite surfaces of the support plate 52 and the moving plate 56, and the movement trajectories of the semicircular blocks of the support plate 52 and the moving plate 56 coincide.

[0034] In actual use, by setting an anti-clogging mechanism 5, when the semicircular block of the support plate 52 contacts the semicircular block of the moving plate 56, the moving plate 56 will drive the spring 59 to stretch. By setting a baffle 55, the moving plate 56 is prevented from detaching from the fixed rod 54. When the semicircular block of the support plate 52 separates from the semicircular block of the moving plate 56, the spring 59 will drive the moving plate 56 to reset through its own elasticity contraction. This process is repeated so that the striking rod 58 continuously and intermittently strikes the filter disc 6. By vibrating the filter disc 6, the clogging of the gaps in the filter disc 6 is reduced, thus performing a secondary vibration cleaning on the basis of cleaning the filter disc 6 with the brush 13.

[0035] In practical use, when the methane sensor 3 detects that the methane gas concentration in the ventilation duct 1 exceeds the threshold, the controller receives the signal and controls the alarm 2 to sound an alarm. At the same time, the motor 14 is turned on, driving the first rotating shaft 7 to rotate. The first rotating shaft 7, through the cooperation of the first gear 8 and the second gear 10, drives the second rotating shaft 9 to rotate.

[0036] First, the second rotating shaft 9 drives the two ventilation fan blades 11 to rotate, thereby achieving ventilation and air exchange in the ventilation duct 1.

[0037] Secondly, the second rotating shaft 9 drives the brush 13 on the connecting plate 12 to rotate around the second rotating shaft 9, and uses the brush 13 to clean the impurities on the surface of the filter disc 6.

[0038] Secondly, the second rotating shaft 9 drives the rotating rod 43 to rotate, which in turn drives the pressing blocks 45 on the multiple connecting rods 44 to rotate around the rotating rod 43. When the pressing blocks 45 move, they will press against the arc strip 42, thereby pressing the dehumidification ring 41 with external force through the arc strip 42, avoiding the problem of the inner wall of the dehumidification ring 41 becoming hardened due to the absorption of moisture and the water remaining stationary for a long time.

[0039] Then, the rotating rod 43 will drive the support plate 52 on the L-shaped rod 51 to rotate. When the semicircular block of the support plate 52 contacts the semicircular block of the moving plate 56, the moving plate 56 will move away from the filter disc 6 on the fixed rod 54, thereby driving the striking rod 58 on the support rod 57 away from the filter disc 6, and stretching the spring 59 at the same time. When the semicircular block of the support plate 52 separates from the semicircular block of the moving plate 56, the spring 59 will drive the moving plate 56 to reset through its own elasticity, thereby causing the striking rod 58 to strike the filter disc 6. In this way, the striking rod 58 will continuously and intermittently strike the filter disc 6, thereby reducing the blockage of the gaps in the filter disc 6 by vibrating the filter disc 6, thus performing a secondary vibration cleaning on the basis of cleaning the filter disc 6 with the brush 13.

[0040] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the present utility model. Any simple modifications, alterations, or equivalent structural changes made to the above embodiments based on the technical essence of the present utility model shall still fall within the protection scope of the present utility model.

Claims

1. A gas tunnel ventilation detection device with early warning function, characterized in that: The device includes a ventilation duct (1) and an alarm (2) installed on the outer side of the ventilation duct (1). A methane sensor (3) and a filter disc (6) are fixedly connected to the inner wall of the ventilation duct (1). A first rotating shaft (7) is installed on the ventilation duct (1). A second rotating shaft (9) that is rotatably connected to the center of the filter disc (6) is connected to the first rotating shaft (7). A dehumidification mechanism (4) is installed at one end of the second rotating shaft (9). Two ventilation fan blades (11) are arranged circumferentially on the second rotating shaft (9). The two ventilation fan blades (11) are located on both sides of the filter disc (6). The dehumidification mechanism (4) includes a dehumidification ring (41) and a rotating rod (43) connected to one end of the second rotating shaft (9). The outer ring surface of the dehumidification ring (41) is fixedly connected to the inner wall of the ventilation duct (1). The rotating rod (43) is provided with an anti-clogging mechanism (5) to prevent the filter disc (6) from clogging.

2. The gas tunnel ventilation detection device with early warning function according to claim 1, characterized in that: A motor (14) is provided at one end of the first rotating shaft (7) extending out of the ventilation duct (1). The motor (14) is installed on the outer wall of the ventilation duct (1). A first gear (8) is provided at the other end of the first rotating shaft (7). A second gear (10) is provided on the second rotating shaft (9). Both the first gear (8) and the second gear (10) are bevel gears and mesh with each other.

3. The gas tunnel ventilation detection device with early warning function according to claim 1, characterized in that: The other end of the second rotating shaft (9) is provided with a connecting plate (12), and a brush (13) is provided on the connecting plate (12). The brush (13) is located between a bidirectional fan blade (11) and a filter disc (6) and abuts against the outer surface of the filter disc (6).

4. A gas tunnel ventilation detection device with early warning function according to claim 1, characterized in that: The inner wall of the dehumidification ring (41) is fixedly connected with multiple arc-shaped strips (42), and multiple connecting rods (44) are fixedly connected to the outer surface of the rotating rod (43). Each of the multiple connecting rods (44) is fixedly connected to an extrusion block (45) at the end away from the rotating rod (43). The arc-shaped strips (42) are located on the movement trajectory of the extrusion block (45).

5. A gas tunnel ventilation detection device with early warning function according to claim 1, characterized in that: The anti-clogging mechanism (5) includes multiple L-shaped rods (51) and a striking rod (58) disposed on the L-shaped rods (51). One end of the L-shaped rod (51) is fixedly connected to the outer side of the rotating rod (43), and the other end of the L-shaped rod (51) is fixedly connected to a support plate (52). The two ends of the fixed rod (54) are respectively provided with a fixed plate (53) and a baffle (55). The fixed plate (53) is fixedly connected to the inner wall of the ventilation duct (1). A movable plate (56) is slidably sleeved on the fixed rod (54). A spring (59) is disposed between the movable plate (56) and the fixed plate (53). A support rod (57) is fixedly connected to the side of the movable plate (56). The striking rod (58) is fixedly connected to the end of the support rod (57) near the filter disc (6).

6. A gas tunnel ventilation detection device with early warning function according to claim 5, characterized in that: Semicircular blocks are provided on the opposite surfaces of the support plate (52) and the moving plate (56), and the movement trajectories of the semicircular blocks of the support plate (52) and the moving plate (56) coincide.

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