Ventilation device for highway tunnel

Abstract

The utility model discloses a highway tunnel ventilation device which comprises a jet fan, a connecting ring is welded to the air inlet end of the jet fan, a housing is welded to the side, away from the jet fan, of the connecting ring, a rotating ring is rotationally connected to an inner cavity of the housing, a conical filter screen is fixedly connected to one side of the rotating ring, and the conical filter screen is fixedly connected to the other side of the rotating ring. A connecting block is welded to the end, away from the rotating ring, of the conical filter screen, and a connecting rod is fixedly connected to the end, close to the connecting ring, of the connecting block. The jet fan works, external air enters the jet fan through the connecting ring, when the flow speed of the air is too high and the air makes contact with the fan blades, the fan blades can be driven to rotate, the fan blades drive the conical filter screen to rotate, impurities attached to the conical filter screen are reduced, the larger the working power of the jet fan is, the higher the rotating speed of the conical filter screen is, and therefore the impurities can be effectively removed. Therefore, the purposes that the conical filter screen is matched with autorotation, impurity adhesion is reduced, and then the manual cleaning period is shortened are achieved.

Description

Technical Field

[0001] This utility model belongs to the field of highway tunnel technology, and in particular relates to a ventilation device for highway tunnels. Background Technology

[0002] To ensure smooth airflow inside highway tunnels, ventilation fans are typically installed inside the tunnels to allow air to flow longitudinally. These ventilation fans can be categorized into various types, such as full-jet ventilation and vertical shaft ventilation. For example, full-jet ventilation utilizes the high-speed airflow generated by a jet fan to drive the overall airflow within the tunnel.

[0003] During the use of jet fans, dust and other impurities easily adhere to the filter screen at the air inlet. The accumulation of impurities will affect the working effect of the fan, and manual cleaning is generally required every once in a while to ensure its ventilation effect. In order to reduce the manual cleaning cycle of the filter screen, we have designed a ventilation device for highway tunnels, which uses a conical filter screen in conjunction with its own rotation to reduce the adhesion of impurities, thereby reducing the manual cleaning cycle. Utility Model Content

[0004] The purpose of this invention is to provide a ventilation device for highway tunnels, which has the advantages of using a conical filter screen in conjunction with rotation to reduce the adhesion of impurities and thus reduce the manual cleaning cycle, thereby solving the aforementioned technical problems.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A ventilation device for highway tunnels includes a jet fan installed in the tunnel. A connecting ring is welded to the air inlet end of the jet fan. A cover is welded to the side of the connecting ring away from the jet fan. A rotating ring is rotatably connected to the inner cavity of the cover. A conical filter screen is fixedly connected to one side of the rotating ring. A connecting block is welded to the end of the conical filter screen away from the rotating ring. A connecting rod is fixedly connected to the end of the connecting block near the connecting ring. A fan blade is fixedly connected to the end of the connecting rod away from the connecting block.

[0006] Preferably, the outer shell of the jet fan is welded with two symmetrical elongated side plates, and three evenly distributed connecting lugs are installed on the elongated side plates.

[0007] Preferably, a movable rod is mounted on the connecting ear, and a mounting plate is mounted on the end of the movable rod away from the connecting ear.

[0008] Preferably, the cover has a rotating cavity on the side near the connecting ring, and the rotating ring is rotatably connected to the inner cavity of the rotating cavity.

[0009] Preferably, the connecting block is conical.

[0010] The beneficial effects of this utility model are:

[0011] 1. In this utility model, outside air enters the jet fan through the connecting ring. When the airflow is too fast and comes into contact with the fan blades, it will drive the fan blades to rotate. The fan blades will then drive the conical filter screen to rotate, reducing the adhesion of impurities to the conical filter screen. Furthermore, the higher the working power of the jet fan, the faster the rotation speed of the conical filter screen will be. This achieves the purpose of using the conical filter screen in conjunction with its own rotation to reduce the adhesion of impurities, thereby reducing the manual cleaning cycle.

[0012] 2. The rotating cavity in this invention provides a limiting function for the rotating ring, ensuring its smooth and stable rotation.

[0013] 3. This utility model, through the combined use of long side plates, connecting ears, movable rods and mounting plates, can be installed by mounting plates and tunnel arch pre-embedded blocks. The combination of multiple long side plates, connecting ears and movable rods ensures the firmness of the installation, thereby ensuring the stability of the jet fan operation. Attached Figure Description

[0014] The advantages of the present invention, as described above and / or in the following detailed description in conjunction with the accompanying drawings, will become clearer and more readily understood. These drawings are merely illustrative and do not limit the scope of the present invention.

[0015] Figure 1 This is a schematic diagram of one embodiment of the present utility model;

[0016] Figure 2 This is a three-dimensional schematic diagram of a jet fan according to an embodiment of the present invention;

[0017] Figure 3 This is a three-dimensional schematic diagram of a connecting ring and a conical filter screen according to an embodiment of the present invention;

[0018] Figure 4 This is a three-dimensional disassembled schematic diagram of the connecting ring and the conical filter screen in one embodiment of the present invention.

[0019] The attached diagram lists the components represented by each number as follows:

[0020] 1. Jet fan, 2. Connecting ring, 3. Cover, 4. Rotating ring, 5. Conical filter screen, 6. Connecting block, 7. Connecting rod, 8. Fan blade, 9. Long side plate, 10. Connecting ear, 11. Movable rod, 12. Mounting plate, 13. Rotating cavity. Detailed Implementation

[0021] In the following description, embodiments of the ventilation device for highway tunnels of the present invention will be described with reference to the accompanying drawings.

[0022] Figure 1-4This invention illustrates a ventilation device for highway tunnels according to an embodiment of the present invention. It includes a jet fan 1 installed inside the tunnel. A connecting ring 2 is welded to the air inlet end of the jet fan 1. A cover 3 is welded to the side of the connecting ring 2 away from the jet fan 1. A rotating ring 4 is rotatably connected to the inner cavity of the cover 3. A rotating cavity 13 is provided on the side of the cover 3 near the connecting ring 2. The rotating ring 4 is rotatably connected to the inner cavity of the rotating cavity 13. A connecting block 6 is cone-shaped. The rotating cavity 13 limits the rotation of the rotating ring 4, ensuring its smooth and stable rotation. A conical filter 5 is fixedly connected to one side of the rotating ring 4. A connecting block 6 is welded to the end of the conical filter 5 away from the rotating ring 4. A connecting rod 7 is fixedly connected to one end of the connecting ring 2. A fan blade 8 is fixedly connected to the end of the connecting rod 7 away from the connecting block 6. Two symmetrical elongated side plates 9 are welded to the outer shell of the jet fan 1. Three evenly distributed connecting ears 10 are installed on the elongated side plates 9. A movable rod 11 is installed on the connecting ears 10. An installation carrier plate 12 is installed at the end of the movable rod 11 away from the connecting ears 10. Through the cooperation of the elongated side plates 9, connecting ears 10, movable rod 11 and installation carrier plate 12, the installation can be carried out with the tunnel arch pre-embedded block through the installation carrier plate 12. The cooperation of multiple elongated side plates 9, connecting ears 10 and movable rod 11 ensures the firmness of the installation, thereby ensuring the stability of the jet fan 1.

[0023] Working principle: When this utility model is in use, the jet fan 1 operates, and the outside air enters the jet fan 1 through the connecting ring 2. If the airflow speed is too fast and it comes into contact with the fan blade 8, it will drive the fan blade 8 to rotate. The fan blade 8 will then drive the connecting rod 7 and the connecting block 6 to rotate, which in turn drives the conical filter screen 5 and the rotating ring 4 to rotate. The rotating ring 4 rotates stably in the inner cavity of the housing 3 and the connecting ring 2 forming 13, which prevents the conical filter screen 5 from shifting. Under high-speed rotation, the conical filter screen 5 effectively reduces the adhesion of impurities to the conical filter screen 5. Moreover, the higher the working power of the jet fan 1, the faster the rotation speed of the conical filter screen 5, which can be set as needed.

[0024] In summary: This ventilation device for highway tunnels uses a jet fan 1. Outside air enters the jet fan 1 through the connecting ring 2. If the airflow is too fast and comes into contact with the fan blades 8, it will drive the fan blades 8 to rotate. The fan blades 8 then drive the conical filter screen 5 to rotate, reducing the adhesion of impurities to the conical filter screen 5. Furthermore, the greater the working power of the jet fan 1, the faster the rotation speed of the conical filter screen 5.

Claims

1. A ventilation device for a highway tunnel, characterized in that, The utility model provides an improved jet fan, which comprises a jet fan (1) installed in a tunnel, a connecting ring (2) welded at the air inlet end of the jet fan (1), a cover (3) welded at the side of the connecting ring (2) away from the jet fan (1), a rotating ring (4) rotatably connected in the cover (3), a conical filter screen (5) fixedly connected at one side of the rotating ring (4), a connecting block (6) welded at the end of the conical filter screen (5) away from the rotating ring (4), a connecting rod (7) fixedly connected at the end of the connecting block (6) close to the connecting ring (2), and a fan blade (8) fixedly connected at the end of the connecting rod (7) away from the connecting block (6).

2. The ventilation device for a highway tunnel according to claim 1, characterized by Two symmetrical long side plates (9) are welded at the outer shell of the jet fan (1), and three evenly distributed connecting lugs (10) are installed on the long side plates (9).

3. The ventilation device for a highway tunnel according to claim 2, characterized by A movable rod (11) is installed on the connecting lug (10), and an installation carrier plate (12) is installed at the end of the movable rod (11) away from the connecting lug (10).

4. The ventilation device for a highway tunnel according to claim 3, characterized by A rotating cavity (13) is arranged at the side of the cover (3) close to the connecting ring (2), and the rotating ring (4) is rotatably connected in the rotating cavity (13).

5. The ventilation device for a highway tunnel according to claim 4, characterized by The connecting block (6) is in the shape of a sharp cone.

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