Tunnel ventilation air volume adjusting device

Abstract

The utility model discloses a tunnel ventilation air volume adjusting device which comprises a supporting pipe, the outer side of the supporting pipe is symmetrically connected with ventilation pipes, the ventilation pipes are communicated with the interior of the supporting pipe, an adjusting mechanism used for adjusting the air volume in the ventilation pipes is arranged in the supporting pipe, and the top of the supporting pipe is connected with an air inlet pipe. A first connecting pipe is arranged at one end of the air inlet pipe and connected with an external fan, a second connecting pipe is rotationally connected to the other end of the air inlet pipe through a bearing, the adjusting mechanism in the supporting pipe comprises an air volume adjusting cylinder, and the air volume adjusting cylinder is slidably arranged in the supporting pipe and located outside the ventilation pipe in a matched mode. According to the tunnel ventilation air volume adjusting device, the air volume can be controlled by adjusting the position of the air volume adjusting cylinder, the ventilation volume of the ventilation pipe is effectively changed through vertical movement of the air volume adjusting cylinder, and therefore accurate air volume adjustment is provided.

Description

Technical Field

[0001] This utility model relates to the field of tunnel construction technology, specifically a tunnel ventilation air volume regulating device. Background Technology

[0002] With the deepening of reform and opening up, my country's high-speed rail transportation industry has also shown a rapid development trend. Many high-speed rail construction projects face the challenge of constructing long tunnels. However, how to do a good job in ventilation has always been a key and difficult point in the construction of long high-speed rail tunnels.

[0003] Traditional tunnel ventilation volume is usually adjusted by changing the fan speed or the position of the damper, which easily leads to energy waste, especially when a large amount of ventilation is not needed. Furthermore, long-term ventilation into the tunnel by fans not only consumes electricity but also causes the fans to work excessively, resulting in a shortened lifespan. Therefore, we propose a tunnel ventilation volume adjustment device. Utility Model Content

[0004] The purpose of this invention is to provide a tunnel ventilation air volume regulating device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a tunnel ventilation air volume regulating device, comprising a support pipe, a ventilation pipe symmetrically connected to the outside of the support pipe and the ventilation pipe communicating with the inside of the support pipe, an regulating mechanism for regulating the air volume inside the ventilation pipe being provided inside the support pipe, an air inlet pipe being connected to the top of the support pipe, a first connecting pipe being provided at one end of the air inlet pipe and connected to an external fan, and a second connecting pipe being rotatably connected to the other end of the air inlet pipe via a bearing.

[0006] Preferably, the adjustment mechanism inside the support tube includes an air volume regulating cylinder. The air volume regulating cylinder is slidably disposed inside the support tube outside the ventilation pipe. Ventilation holes are equidistantly opened on the outer side of the air volume regulating cylinder. A threaded rod is rotatably connected to the bottom of the inner wall of the support tube through a bearing. A vertical threaded hole is opened at the bottom of the air volume regulating cylinder. The threaded rod is threadedly connected to the threaded hole of the air volume regulating cylinder.

[0007] Preferably, a limiting protrusion ring is integrally provided on the inner wall of the support pipe above the ventilation pipe, a worm gear is rotatably connected to the bottom of the support pipe, the bottom of the threaded rod passes through the support pipe and is fixed to the central axis of the worm gear, mounting plates are symmetrically fixed to the bottom of the support pipe, and a worm is rotatably connected between the two mounting plates. The worm meshes with the worm gear, and a rotating disk is fixed to the end of the worm through the mounting plate.

[0008] Preferably, an external gear ring is fixedly connected to the outer side of the bottom end of the second connecting pipe, a fixing plate is installed on the outer side of the air inlet pipe, and a support shaft is rotatably connected inside the fixing plate. A gear is fixedly connected to the top of the support shaft, and the gear meshes with the external gear ring. A crank handle is rotatably connected to the bottom of the fixing plate, and the bottom of the support shaft passes through the fixing plate and is fixedly connected to the crank handle.

[0009] Preferably, control valves are provided on the outer sides of both ends of the air inlet pipe.

[0010] Preferably, the outer side of the end of the second connecting pipe is provided with an external thread, and the dust filter is provided with an internal thread that mates with the external thread. The dust filter and the second connecting pipe are connected by a thread.

[0011] Preferably, a flow divider is provided inside the ventilation duct.

[0012] Preferably, the bottom of the inner wall of the support tube is symmetrically fixed with limit rods, and the bottom of the air volume regulating cylinder is symmetrically provided with limit holes, and the two limit rods are respectively slidably connected in the limit holes.

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

[0014] When the air volume needs to be adjusted, this utility model can rotate the rotating disk to make the worm gear rotate. Through the meshing of the worm gear and the worm wheel, the threaded rod is driven to rotate, thereby adjusting the position of the air volume regulating cylinder and controlling the air volume. The up and down movement of the air volume regulating cylinder effectively changes the ventilation volume of the ventilation pipe, thus providing precise air volume regulation.

[0015] When there is strong wind, this invention can stop the fan's air supply and adjust the second connecting pipe port to face the wind direction for natural air supply, saving electricity costs and providing the fan with rest time, thus extending the fan's service life. Attached Figure Description

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

[0017] Figure 2 This is a cross-sectional view of the support tube structure of this utility model;

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

[0019] In the diagram: 1. Support pipe; 2. Ventilation pipe; 3. Air inlet pipe; 4. First connecting pipe; 5. Second connecting pipe; 6. Dust filter; 7. External gear ring; 8. Gear; 9. Support shaft; 10. Fixing plate; 11. Handle; 12. Control valve; 13. Diverter plate; 14. Limiting ring; 15. Air volume regulating cylinder; 16. Threaded rod; 17. Limiting rod; 18. Worm gear; 19. Mounting plate; 20. Worm; 21. Rotary disc. 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. 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.

[0021] Please see Figure 1 , Figure 2 and Figure 3 This utility model provides a technical solution: a tunnel ventilation air volume adjustment device, including a support pipe 1, a ventilation pipe 2 symmetrically connected to the outside of the support pipe 1, and the ventilation pipe 2 communicating with the inside of the support pipe 1. The support pipe 1 is provided with an adjustment mechanism for adjusting the air volume inside the ventilation pipe 2. The top of the support pipe 1 is connected to an air inlet pipe 3. One end of the air inlet pipe 3 is provided with a first connecting pipe 4, and the first connecting pipe 4 is connected to an external fan. The other end of the air inlet pipe 3 is rotatably connected to a second connecting pipe 5 through a bearing.

[0022] It should be noted that in windy weather, the fan can be stopped and the second connecting pipe 5 port can be adjusted to face the wind direction for natural air supply.

[0023] Please see Figure 2 The adjustment mechanism inside the support pipe 1 includes an air volume regulating cylinder 15. The air volume regulating cylinder 15 is slidably arranged inside the support pipe 1 outside the ventilation pipe 2. Ventilation holes are equidistantly opened on the outer side of the air volume regulating cylinder 15. A threaded rod 16 is rotatably connected to the bottom of the inner wall of the support pipe 1 through a bearing. A vertical threaded hole is opened at the bottom of the air volume regulating cylinder 15. The threaded rod 16 is threadedly connected to the threaded hole of the air volume regulating cylinder 15.

[0024] It should be noted that the air volume in the ventilation duct 2 can be precisely adjusted through the threaded connection between the threaded rod 16 and the air volume regulating cylinder 15. When the air volume needs to be adjusted, the rotating disk 21 can be rotated to make the worm gear 20 rotate. Through the meshing of the worm gear 20 and the worm wheel 18, the threaded rod 16 is driven to rotate, thereby adjusting the position of the air volume regulating cylinder 15 and controlling the amount of air volume. The up and down movement of the air volume regulating cylinder 15 effectively changes the ventilation volume of the ventilation duct 2, thereby providing precise air volume regulation.

[0025] Please see Figure 2 The inner wall of the support pipe 1 is integrally provided with a limiting protrusion ring 14 above the ventilation pipe 2. The bottom of the support pipe 1 is rotatably connected to a worm gear 18. The bottom of the threaded rod 16 passes through the support pipe 1 and is fixed to the central axis of the worm gear 18. The bottom of the support pipe 1 is symmetrically fixed with mounting plates 19, and a worm 20 is rotatably connected between the two mounting plates 19. The worm 20 is meshed with the worm gear 18, and the end of the worm 20 passes through the mounting plate 19 and is fixed with a rotating disk 21.

[0026] It should be noted that the rotation of the worm gear 20 can be controlled by rotating the rotating disk 21, and the threaded rod 16 can be rotated by the meshing connection between the worm wheel 18 and the worm gear 20. The air volume regulating cylinder 15 can be raised and lowered by the threaded connection between the air volume regulating cylinder 15 and the threaded rod 16.

[0027] Please see Figure 1 An external gear ring 7 is fixedly connected to the outer side of the bottom end of the second connecting pipe 5. A fixing plate 10 is installed on the outer side of the air inlet pipe 3, and a support shaft 9 is rotatably connected inside the fixing plate 10. A gear 8 is fixedly connected to the top of the support shaft 9, and the gear 8 meshes with the external gear ring 7. A crank handle 11 is rotatably connected to the bottom of the fixing plate 10, and the bottom of the support shaft 9 passes through the fixing plate 10 and is fixedly connected to the crank handle 11.

[0028] It should be noted that when using this invention in windy weather, the control valve 12 at one end of the air inlet pipe 3 and the first connecting pipe 4 can be closed. The position of the port of the second connecting pipe 5 can be adjusted according to the wind direction. During adjustment, the crank handle 11 can be manually turned to rotate the gear 8. The gear 8 meshes with the external gear ring 7 to rotate the second connecting pipe 5, so that the port of the second connecting pipe 5 faces the wind direction. The air enters the support pipe 1 through the second connecting pipe 5 and then enters the ventilation pipe 2 through the support pipe 1. When it is necessary to adjust the air volume inside the ventilation pipe 2, the rotating disk 21 can be rotated to rotate the worm 20. The worm 20 meshes with the worm wheel 18 to rotate the threaded rod 16. The air volume regulating cylinder 15 is moved upward through the threaded connection between the air volume regulating cylinder 15 and the threaded rod 16. When the air volume regulating cylinder 15 moves to contact the limiting protrusion ring 14, the air volume regulating cylinder 15 completely blocks the port of the ventilation pipe 2, allowing the multiple ventilation holes on the air volume regulating cylinder 15 to discharge, resulting in the lowest air volume. When the air volume regulating cylinder 15 moves upward to below the port of the ventilation pipe 2, the air volume is at its maximum. When the top of the air volume regulating cylinder 15 is located at the port of the ventilation pipe 2, the air volume is at a medium level, and the air is discharged through the ventilation pipe 2. The diverter plate 13 inside the ventilation pipe 2 can divert the air. In windless weather, the control valve 12 located at the second connecting pipe 5 of the air inlet pipe 3 is closed, allowing the external fan to operate and supply air.

[0029] Please see Figure 1 Control valves 12 are installed on the outer sides of both ends of the air inlet pipe 3.

[0030] It should be noted that when the air volume is provided by an external fan, the control valve 12 at one end of the air inlet pipe 3 and the second connecting pipe 5 is closed. When there is strong wind, the air volume can be provided by the natural wind in the environment, and the control valve 12 at the first connecting pipe 4 of the air inlet pipe 3 can be closed.

[0031] Please see Figure 1 The outer side of the end of the second connecting pipe 5 is provided with an external thread, and the dust filter 6 is provided with an internal thread that mates with the external thread. The dust filter 6 and the second connecting pipe 5 are connected by a thread.

[0032] It should be noted that the dust filter 6 and the second connecting pipe 5 are detachably connected, making it convenient to clean the dust filter 6.

[0033] Please see Figure 1 A diversion plate 13 is installed inside the ventilation duct 2.

[0034] It should be noted that the diverter plate 13 can disperse the airflow, thus dispersing the air entering the tunnel.

[0035] Please see Figure 2Limiting rods 17 are symmetrically fixed to the bottom of the inner wall of the support pipe 1, and limiting holes are symmetrically opened at the bottom of the air volume regulating cylinder 15. The two limiting rods 17 are respectively slidably connected in the limiting holes.

[0036] It should be noted that the setting of the limit rod 17 can ensure the stable lifting and lowering of the air volume regulating cylinder 15.

[0037] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0038] Furthermore, the terms “first,” “second,” “third,” and “fourth” are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as “first,” “second,” “third,” or “fourth” may explicitly or implicitly include at least one of those features.

[0039] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0040] 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 tunnel ventilation air volume regulating device, characterized in that, Includes a support pipe (1), on which a ventilation pipe (2) is symmetrically connected, and the ventilation pipe (2) is connected to the inside of the support pipe (1). The support pipe (1) is provided with an adjustment mechanism for adjusting the air volume inside the ventilation pipe (2). The top of the support pipe (1) is connected to an air inlet pipe (3). One end of the air inlet pipe (3) is provided with a first connecting pipe (4), and the first connecting pipe (4) is connected to an external fan. The other end of the air inlet pipe (3) is rotatably connected to a second connecting pipe (5) through a bearing. The adjustment mechanism inside the support tube (1) includes an air volume regulating cylinder (15). The air volume regulating cylinder (15) is slidably arranged inside the support tube (1) outside the ventilation tube (2). Ventilation holes are equidistantly opened on the outer side of the air volume regulating cylinder (15). A threaded rod (16) is rotatably connected to the bottom of the inner wall of the support tube (1) through a bearing. A vertical threaded hole is opened at the bottom of the air volume regulating cylinder (15). The threaded rod (16) is threadedly connected to the threaded hole of the air volume regulating cylinder (15).

2. A tunnel ventilation air volume regulating device according to claim 1, characterized in that: The inner wall of the support pipe (1) is integrally provided with a limiting protrusion ring (14) above the ventilation pipe (2). The bottom of the support pipe (1) is rotatably connected to a worm gear (18). The bottom of the threaded rod (16) passes through the support pipe (1) and is fixed to the central axis of the worm gear (18). The bottom of the support pipe (1) is symmetrically fixed with mounting plates (19), and a worm (20) is rotatably connected between the two mounting plates (19). The worm (20) is meshed with the worm gear (18), and the end of the worm (20) passes through the mounting plate (19) and is fixed with a rotating disk (21).

3. A tunnel ventilation air volume regulating device according to claim 1, characterized in that: An external gear ring (7) is fixedly connected to the outer side of the bottom end of the second connecting pipe (5). A fixing plate (10) is installed on the outer side of the air inlet pipe (3), and a support shaft (9) is rotatably connected inside the fixing plate (10). A gear (8) is fixedly connected to the top of the support shaft (9), and the gear (8) meshes with the external gear ring (7). A crank handle (11) is rotatably connected to the bottom of the fixing plate (10), and the bottom of the support shaft (9) passes through the fixing plate (10) and is fixedly connected to the crank handle (11).

4. A tunnel ventilation air volume regulating device according to claim 1, characterized in that: Control valves (12) are provided on the outer sides of both ends of the air inlet pipe (3).

5. A tunnel ventilation air volume regulating device according to claim 1, characterized in that: The outer side of the end of the second connecting pipe (5) is provided with an external thread, and the dust filter (6) is provided with an internal thread that mates with the external thread. The dust filter (6) and the second connecting pipe (5) are connected by a thread.

6. A tunnel ventilation air volume regulating device according to claim 1, characterized in that: A diverter plate (13) is installed inside the ventilation pipe (2).

7. A tunnel ventilation air volume regulating device according to claim 1, characterized in that: The bottom of the inner wall of the support tube (1) is symmetrically fixed with limit rods (17), and the bottom of the air volume regulating cylinder (15) is symmetrically opened with limit holes. The two limit rods (17) are respectively slidably connected in the limit holes.

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