Long-distance air supply and ventilation device for tunnel construction

Abstract

The utility model discloses a long -distance air supply ventilation device for tunnel construction, including tunnel body, install negative pressure fan in the top of tunnel body and install the air supply tube in the top of tunnel body, the inner top of tunnel body is fixedly connected with dust removal tank, the inner wall fixedly connected with filter screen of dust removal tank, the air inlet end of negative pressure fan and the lateral wall fixed communication of dust removal tank, the air outlet end terminal fixed communication of negative pressure fan has the conveying pipe, the outer wall equal interval of conveying pipe is equipped with a plurality of connecting pieces, a plurality of connecting pieces all are fixedly connected with the top of tunnel body, be equipped with angle adjusting mechanism on the air supply tube. The utility model discloses through angle adjusting mechanism realizes the swing of air supply component, can cover more extensive tunnel area, promotes the overall ventilation uniformity, through the setting filter screen can carry out effective filtration to the air of entering tunnel, reduces dust and other impurities, guarantees the health of construction personnel.

Description

Technical Field

[0001] This utility model relates to the field of tunnel ventilation technology, and in particular to a long-distance air supply ventilation device for tunnel construction. Background Technology

[0002] During tunnel construction, long-distance ventilation is a crucial aspect of ensuring the safety and efficiency of the working environment. Traditional ventilation technology mainly relies on a combination of fans and ducts in fixed locations to achieve air supply and air exchange.

[0003] Existing ventilation devices, due to their fixed air supply range, are prone to creating ventilation dead zones in tunnels, leading to excessively high dust concentrations or the accumulation of harmful gases in local areas, threatening the health of construction workers. Existing devices generally lack dust removal components, and the fresh air supplied is not filtered, easily bringing external dust into the tunnel and further exacerbating the pollution of the working environment. To solve the above problems, this application proposes a long-distance air supply ventilation device for tunnel construction. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a long-distance air supply and ventilation device for tunnel construction. This device uses an angle adjustment mechanism to allow the air supply components to oscillate, covering a wider tunnel area and improving overall ventilation uniformity. Furthermore, by incorporating a filter, the device effectively filters the air entering the tunnel, reducing dust and other impurities and protecting the health of construction workers.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A long-distance ventilation device for tunnel construction includes a tunnel body, a negative pressure fan installed at the top of the tunnel body, and an air supply duct installed at the top of the tunnel body. A dust collection box is fixedly connected to the top of the tunnel body, and a filter screen is fixedly connected to the inner wall of the dust collection box. The air inlet of the negative pressure fan is fixedly connected to the side wall of the dust collection box, and a delivery pipe is fixedly connected to the outlet of the negative pressure fan. Multiple connectors are installed at equal intervals on the outer wall of the delivery pipe, and all connectors are fixedly connected to the top of the tunnel body. A retractable hose is fixedly connected to the end of the delivery pipe, and the end of the retractable hose is fixedly connected to the side wall of the air supply duct. An air supply mechanism is installed on the inner wall of the air supply duct, and a protective net is fixedly connected to the inner wall of the air supply duct. An angle adjustment mechanism is provided on the air supply duct.

[0007] Preferably, the angle adjustment mechanism includes a U-shaped frame fixedly connected to the inner top of the tunnel body, two rotating shafts fixedly connected to the outer wall of the air supply duct, the end of the left rotating shaft being rotatably connected to the inner wall of the U-shaped frame, and the right rotating shaft passing through the U-shaped frame and rotatably connected to it, a steering motor being fixedly connected to the inner top of the tunnel body, a transmission rod being fixedly connected to the output end of the steering motor, and the end of the transmission rod being rotatably connected to the side wall of the U-shaped frame, a drive gear being fixedly connected to the outer wall of the transmission rod, and a driven gear being fixedly connected to the outer wall of the rotating shaft, the drive gear and the driven gear meshing.

[0008] Preferably, the connector includes a clamp and a bracket. The clamp is fitted onto the outer wall of the conveying pipe and fixedly connected thereto. The clamp is fixedly connected to the bracket, and the top of the bracket is fixedly connected to the inner top of the tunnel body by multiple bolts.

[0009] Preferably, the air supply mechanism includes a motor and a fan. Two mounting brackets are fixedly connected to the outer wall of the motor, and both mounting brackets are fixedly connected to the inner wall of the air supply duct. The end of the output shaft of the motor is fixedly connected to the fan.

[0010] Preferably, the delivery pipe and the retractable hose are fixedly connected, and the retractable hose is connected to the air supply duct.

[0011] Preferably, the diameter of the driven gear is greater than the diameter of the driving gear.

[0012] Compared with the prior art, the advantages of this utility model are as follows:

[0013] 1. The air supply component can be oscillated by the angle adjustment mechanism, which can cover a wider tunnel area, avoid the problem of local air circulation caused by traditional fixed air supply methods, and improve the overall ventilation uniformity.

[0014] 2. By setting up specialized dust removal and filtration components, the air entering the tunnel can be effectively filtered, reducing dust and other impurities, providing a cleaner air environment for the construction area, and protecting the health of construction personnel.

[0015] In summary, the oscillation of the air supply components via the angle adjustment mechanism can cover a wider tunnel area and improve the overall ventilation uniformity; the installation of filters can effectively filter the air entering the tunnel, reducing dust and other impurities and protecting the health of construction workers. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a long-distance ventilation device for tunnel construction proposed in this utility model;

[0017] Figure 2This is a cross-sectional view of a long-distance ventilation device for tunnel construction proposed in this utility model;

[0018] Figure 3 for Figure 2 Enlarged view of the structure at point A in the middle.

[0019] In the diagram: 1. Tunnel body, 2. Dust collection box, 3. Filter screen, 4. Negative pressure fan, 5. Conveying pipe, 6. Connector, 7. Telescopic hose, 8. Air supply tube, 9. Air supply mechanism, 10. Protective net, 11. U-shaped frame, 12. Steering motor, 13. Transmission rod, 14. Drive gear, 15. Driven gear, 16. Rotating shaft. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Reference Figures 1-3 A long-distance ventilation device for tunnel construction includes a tunnel body 1, a negative pressure fan 4 installed at the top inside the tunnel body 1, and an air supply duct 8 installed at the top inside the tunnel body 1. A dust collection box 2 is fixedly connected to the top inside the tunnel body 1, and a filter screen 3 is fixedly connected to the inner wall of the dust collection box 2. The filter screen 3 is used to intercept dust particles in the air and purify the incoming air.

[0022] The air inlet of the negative pressure fan 4 is fixedly connected to the side wall of the dust collector 2. The air outlet of the negative pressure fan 4 is fixedly connected to a conveying pipe 5. Multiple connectors 6 are installed at equal intervals on the outer wall of the conveying pipe 5. All connectors 6 are fixedly connected to the top of the tunnel body 1. The connectors 6 include clamps and brackets. The clamps are fitted onto the outer wall of the conveying pipe 5 and fixedly connected to it. The clamps are fixedly connected to the brackets. The top of the brackets is fixedly connected to the inner top of the tunnel body 1 by multiple bolts. The connectors 6 support the conveying pipe 5 and stabilize it in the inner top of the tunnel body 1. A retractable hose 7 is fixedly connected to the end of the conveying pipe 5. The conveying pipe 5 and the retractable hose 7 are fixedly connected. The flexible hose 7 is fixedly connected to the side wall of the air supply duct 8. The flexible hose 7 and the air supply duct 8 are connected. The flexible hose 7 allows the air supply duct 8 to maintain airflow when the angle is adjusted. The inner wall of the air supply duct 8 is equipped with an air supply mechanism 9. The air supply mechanism 9 accelerates the airflow and sends the purified air into the tunnel. The air supply mechanism 9 includes a motor and a fan. The outer wall of the motor is fixedly connected to two mounting brackets. Both mounting brackets are fixedly connected to the inner wall of the air supply duct 8. The end of the motor's output shaft is fixedly connected to the fan. The inner wall of the air supply duct 8 is fixedly connected to a protective net 10. The protective net 10 prevents foreign objects from contacting the rotating fan and ensures personnel safety.

[0023] An angle adjustment mechanism is provided on the air supply duct 8. The angle adjustment mechanism includes a U-shaped frame 11 fixedly connected to the inner top of the tunnel body 1. Two rotating shafts 16 are fixedly connected to the outer wall of the air supply duct 8. The end of the left rotating shaft 16 is rotatably connected to the inner wall of the U-shaped frame 11, and the right rotating shaft 16 passes through the U-shaped frame 11 and is rotatably connected to it. The U-shaped frame 11 supports the air supply duct 8 through the rotating shafts 16, allowing it to swing around the shafts. A steering motor 12 is fixedly connected to the inner top of the tunnel body 1. A transmission rod 13 is fixedly connected to the output end of the steering motor 12. The end of the transmission rod 13 is rotatably connected to the side wall of the U-shaped frame 11. The outer wall of the transmission rod 13 is fixedly connected to the drive gear 14, and the outer wall of the rotating shaft 16 is fixedly connected to the driven gear 15. The drive gear 14 and the driven gear 15 mesh with each other. The steering motor 12 drives the drive gear 14 through the transmission rod 13, which in turn drives the driven gear 15 to make the air blower 8 swing. The diameter of the driven gear 15 is greater than the diameter of the drive gear 14. The difference in diameter between the driven gear 15 and the drive gear 14 forms a reduction ratio, which makes the swing amplitude of the air blower 8 slow.

[0024] In this invention, the staff installs the device, starts the negative pressure fan 4 and the air supply mechanism 9. The negative pressure fan 4 draws outside air through the dust collector 2, along the delivery pipe 5 and the retractable hose 7, and injects it into the air supply duct 8. The motor drives the fan to rotate, expelling the air through the opening at the bottom of the air supply duct 8, thus injecting air into the tunnel and achieving ventilation. The filter screen 3 on the dust collector 2 filters dust from the air, ensuring the cleanliness of the injected air. The protective net 10 isolates the air supply mechanism 9 to protect people. During ventilation, the steering motor 12 can be started. The output of the steering motor 12 drives the transmission rod 13 and the drive gear 14 to rotate forward and backward. The forward and reverse rotation of the drive gear 14 drives the driven gear 15 and the rotating shaft 16 to rotate forward and backward, realizing the swing of the air supply duct 8. The air supply duct 8 swings back and forth by 60 degrees, providing a wide range of ventilation for the tunnel.

Claims

1. A long-distance ventilation device for tunnel construction, comprising a tunnel body (1), a negative pressure fan (4) installed at the top inside the tunnel body (1), and an air supply duct (8) installed at the top inside the tunnel body (1), characterized in that, A dust collection box (2) is fixedly connected to the inner top of the tunnel body (1). A filter screen (3) is fixedly connected to the inner wall of the dust collection box (2). The air inlet of the negative pressure fan (4) is fixedly connected to the side wall of the dust collection box (2). A conveying pipe (5) is fixedly connected to the air outlet of the negative pressure fan (4). Multiple connectors (6) are installed at equal intervals on the outer wall of the conveying pipe (5). All connectors (6) are fixedly connected to the top of the tunnel body (1). A retractable hose (7) is fixedly connected to the end of the conveying pipe (5). The end of the retractable hose (7) is fixedly connected to the side wall of the air supply duct (8). An air supply mechanism (9) is installed on the inner wall of the air supply duct (8). A protective net (10) is fixedly connected to the inner wall of the air supply duct (8). An angle adjustment mechanism is provided on the air supply duct (8).

2. The long-distance ventilation device for tunnel construction according to claim 1, characterized in that, The angle adjustment mechanism includes a U-shaped frame (11) fixedly connected to the inner top of the tunnel body (1). Two rotating shafts (16) are fixedly connected to the outer wall of the air supply duct (8). The end of the rotating shaft (16) on the left is rotatably connected to the inner wall of the U-shaped frame (11). The rotating shaft (16) on the right passes through the U-shaped frame (11) and is rotatably connected to it. A steering motor (12) is fixedly connected to the inner top of the tunnel body (1). A transmission rod (13) is fixedly connected to the output end of the steering motor (12), and the end of the transmission rod (13) is rotatably connected to the side wall of the U-shaped frame (11). A drive gear (14) is fixedly connected to the outer wall of the transmission rod (13). A driven gear (15) is fixedly connected to the outer wall of the rotating shaft (16). The drive gear (14) and the driven gear (15) mesh with each other.

3. The long-distance ventilation device for tunnel construction according to claim 1, characterized in that, The connector (6) includes a clamp and a bracket. The clamp is fitted onto the outer wall of the conveying pipe (5) and fixedly connected thereto. The clamp is fixedly connected to the bracket. The top of the bracket is fixedly connected to the inner top of the tunnel body (1) by multiple bolts.

4. A long-distance ventilation device for tunnel construction according to claim 1, characterized in that, The air supply mechanism (9) includes a motor and a fan. Two mounting brackets are fixedly connected to the outer wall of the motor. Both mounting brackets are fixedly connected to the inner wall of the air supply duct (8). The end of the output shaft of the motor is fixedly connected to the fan.

5. A long-distance ventilation device for tunnel construction according to claim 1, characterized in that, The delivery pipe (5) and the retractable hose (7) are fixedly connected, and the retractable hose (7) and the air supply duct (8) are connected.

6. A long-distance ventilation device for tunnel construction according to claim 2, characterized in that, The diameter of the driven gear (15) is greater than the diameter of the driving gear (14).

Images