Double-air-door jet flow roadway type tunnel ventilation structure

Abstract

The utility model provides a double-air-door jet flow roadway type tunnel ventilation structure which comprises an air supply tunnel and an air exhaust tunnel, a first air inlet transverse channel, a second air inlet transverse channel and an air wall are arranged between the air supply tunnel and the air exhaust tunnel, an air suction chamber is arranged at the communication position of the interior of the air exhaust tunnel and the second air inlet transverse channel, and a double-door air chamber is arranged in the air supply tunnel. Compared with the prior art, the wind tunnel dust removal device has the advantages that through the design of the dust removal device, the dust removal device is additionally arranged for linkage work on the basis that high-speed airflow flows in an existing wind tunnel, the high-speed flowing airflow in the wind tunnel can push the spiral fan blades to rotate when flowing, and then the rotating cylinder is pushed to rotate; the rotating cylinder rotates to drive the multiple scraping plate shells to rotate through the fixing rod, when the scraping plate shells rotate, the sharp ends of the side edges of the scraping plate shells conduct scraping treatment on the arc edge of the top of the wind tunnel, the scraping plate shells collect dust through the dust collecting assembly while scraping is conducted, and dust diffusion is reduced.

Description

Technical Field

[0001] The utility model relates to a double-air-door jet roadway-type tunnel ventilation structure, belonging to the field of tunnel construction ventilation. Background Technique

[0002] A tunnel is an underground structure excavated in a mountain or underground. During the tunnel excavation process, the ventilation in the tunnel is very important. Especially during the construction of long tunnels, the demand for fresh air is large, and the generated polluted air needs to be discharged in time. At the same time, it is necessary to avoid the mixing of polluted air and fresh air, ensure the timely and effective circulation of air in the tunnel, meet the air quality requirements for construction workers to work in the tunnel, and ensure the production safety during the tunnel excavation process.

[0003] However, most of the currently adopted tunnel ventilation structures use the forced ventilation method throughout the whole process. This method requires a large number of forced ventilation fans and jet fans, and a relatively large number of transformers need to be arranged. As the tunneling distance becomes longer, the ventilation energy consumption increases, which invisibly increases the production cost investment, and the tunnel ventilation effect is not ideal. There is a large amount of dust in the tunnel, which will affect the air quality and the physical health of workers at the same time. Content of the Utility Model

[0004] Aiming at the deficiencies of the existing technology, the purpose of the utility model is to provide a double-air-door jet roadway-type tunnel ventilation structure.

[0005] In order to achieve the above purpose, the utility model is realized through the following technical solutions:

[0006] A double-air-door jet roadway-type tunnel ventilation structure includes a supply air tunnel and an exhaust air tunnel. An intake cross-channel one, an intake cross-channel two and an air wall are arranged between the supply air tunnel and the exhaust air tunnel. An air suction chamber is arranged at the connection of the exhaust air tunnel and the intake cross-channel two. A double-air-door chamber is arranged in the supply air tunnel. A first air belt and a second air belt are respectively arranged on the air suction chamber and the double-air-door chamber. Jet fans matched with the first air belt and the second air belt are respectively arranged in the air suction chamber and the double-air-door chamber. Dust removal devices corresponding to the wind direction are arranged in both the supply air tunnel and the exhaust air tunnel, and branch channels are opened at the corresponding positions of the dust removal devices in the supply air tunnel and the exhaust air tunnel.

[0007] Furthermore, the dust removal device includes two groups of support frames fixed in the air tunnel. A rotating shaft is rotatably connected to the support frames. A rotating cylinder is fixed on the rotating shaft. A plurality of spiral fan blades are uniformly fixed on one side of the outer surface of the rotating cylinder. A plurality of fixing rods are fixed on the other side of the rotating cylinder. A scraping plate shell is fixed at the end of the fixing rod. A dust collection assembly is arranged in the scraping plate shell.

[0008] Further, the dust collection assembly includes a collection port and an exhaust port opened on both sides of the scraping plate housing. A filter screen is provided in the exhaust port. Two wind plates are hinged on one side of the scraping plate housing close to the collection port. The wind plates are hingedly connected to the inner wall of the scraping plate housing through spring hinges. The two wind plates block the collection port. A check block matching the wind plates is fixed on the inner wall of the scraping plate housing.

[0009] Further, the dust collection assembly further includes two groups of dust suction components fixed inside the scraping plate housing. A plurality of connecting plates are provided between the two groups of dust suction components. The plurality of connecting plates are evenly arranged along the inner wall of the scraping plate housing. A secondary dust suction filter block is provided on the connecting plates. A plurality of dust collection grooves are evenly opened on the inner wall of the scraping plate housing.

[0010] Further, the dust suction component includes a main dust suction filter block arranged in the middle of the scraping plate housing. The main dust suction filter block is fixedly connected to the inner wall of the scraping plate housing through a plurality of connecting rods. A plurality of groups of dust suction filter belts are arranged on the connecting rods in sequence from outside to inside.

[0011] Further, the main dust suction filter block, the dust suction filter belts, and the secondary dust suction filter block are all made of dust suction sponge.

[0012] Further, a plurality of groups of partition plates are provided inside the dust collection grooves. A plugging plate matching the dust collection grooves is opened on the outer surface of the scraping plate housing.

[0013] Advantages of the present utility model:

[0014] Through the design of the dust removal device, on the basis of the existing high-speed air flow in the wind tunnel, a dust removal device is added for linkage work. The high-speed flowing air in the wind tunnel will push the spiral fan blades to rotate when flowing, and then drive the rotating cylinder to rotate. The rotation of the rotating cylinder will drive a plurality of scraping plate housings to rotate through the fixing rods. When the scraping plate housing rotates, the sharp ends on its side will scrape the top arc edge of the wind tunnel, thereby achieving the effect of dust removal. The faster the air flow velocity, the faster the spiral fan blades will rotate.

[0015] Through the design of the dust collection assembly, when the scraping plate housing rotates and scrapes, the negative pressure air flow will carry the dust and enter the inside of the scraping plate housing along the collection port of the scraping plate housing. The negative pressure air flow will blow the two wind plates, and then push the two wind plates to open. The negative pressure air flow with dust will enter the inside of the scraping plate housing and be adsorbed and filtered by a plurality of dust suction components, and then discharged from the exhaust port after being filtered by the filter screen. When the scraping plate housing stops rotating, under the action of the spring hinge, the two wind plates rotate back to their original positions and butt together to block the collection port, preventing the dust in the scraping plate housing from falling and spreading.

[0016] Through the design of the dust suction component, while helping the filter screen to perform the dust filtering work and preventing the filter screen from being blocked by too much dust, it can also divide the air flow, change the air flow path, and perform detailed dust filtering work through several secondary dust suction and filtering blocks.

[0017] Through the design of the plugging plate, it is convenient to clean the dust in the dust collection tank and maintain the scraping plate housing. Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 It is a schematic diagram of the overall structure of a double-air-door jet roadway-type tunnel ventilation structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the structure of the dust removal device of a double-air-door jet roadway-type tunnel ventilation structure of the present invention;

[0021] Figure 3 It is a schematic diagram of the partial structure of the dust removal device of a double-air-door jet roadway-type tunnel ventilation structure of the present invention;

[0022] Figure 4 It is a schematic diagram of the structure of the scraping plate housing of a double-air-door jet roadway-type tunnel ventilation structure of the present invention;

[0023] Figure 5 It is a schematic diagram of the internal structure of the scraping plate housing of a double-air-door jet roadway-type tunnel ventilation structure of the present invention;

[0024] Figure 6 It is a schematic diagram of the structure of the dust suction component of a double-air-door jet roadway-type tunnel ventilation structure of the present invention.

[0025] In the figure, 1, air supply tunnel; 2, exhaust tunnel; 3, first air intake cross-channel; 4, second air intake cross-channel; 5, air suction chamber; 6, double-air-door chamber; 7, air wall; 8, dust removal device; 9, branch channel; 10, support frame; 11, rotating shaft; 12, rotating cylinder; 13, spiral fan blade; 14, fixed rod; 15, scraping plate housing; 16, collection port; 17, exhaust port; 18, filter screen; 19, air plate; 20, check block; 21, connecting rod; 22, main dust suction and filtering block; 23, dust suction and filtering belt; 24, connecting plate; 25, secondary dust suction and filtering block; 26, dust collection tank; 27, baffle plate. Detailed Embodiments

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0027] Please refer to Figures 1-6 , the present invention provides a technical solution for a double-air-door jet roadway-type tunnel ventilation structure, including a supply air tunnel 1 and an exhaust air tunnel 2. An intake cross-channel one 3, an intake cross-channel two 4 and an air wall 7 are provided between the supply air tunnel 1 and the exhaust air tunnel 2. An air suction chamber 5 is provided at the connection of the exhaust air tunnel 2 with the intake cross-channel two 4. A double-door air chamber 6 is provided in the supply air tunnel 1. A first air belt and a second air belt are respectively provided on the air suction chamber 5 and the double-door air chamber 6. Jet fans matching the first air belt and the second air belt are respectively provided in the air suction chamber 5 and the double-door air chamber 6. Dust removal devices 8 corresponding to the wind direction are provided in both the supply air tunnel 1 and the exhaust air tunnel 2. Branch channels 9 are respectively opened at the corresponding positions of the supply air tunnel 1 and the exhaust air tunnel 2 and the dust removal devices 8; the supply air tunnel 1, the exhaust air tunnel 2, the intake cross-channel one 3, the intake cross-channel two 4, the air suction chamber 5, the double-door air chamber 6, the air wall 7, the first air belt and the second air belt are all conventional technical means in the art, so there is no excessive elaboration.

[0028] Refer to Figures 2-6, the dust removal device 8 includes two groups of support frames 10 fixed in the wind tunnel. The support frames 10 are of U-shaped structure, which facilitates air flow and reduces the shielding area. A rotating shaft 11 is rotatably connected to the support frame 10, and a rotating cylinder 12 is fixed on the rotating shaft 11. A plurality of spiral fan blades 13 are evenly fixed on one side of the outer surface of the rotating cylinder 12. A plurality of fixing rods 14 are fixed on the other side of the rotating cylinder 12, and a scraping plate shell 15 is fixed at the end of the fixing rod 14. A dust collection component is arranged in the scraping plate shell 15; the rotating cylinder 12, the spiral fan blades 13, the fixing rods 14 and the scraping plate shell 15 are made of plastic materials, with light weight and large outer surface, which is convenient for the wind force to push the spiral fan blades 13 and the rotating cylinder 12 to rotate and the rotating cylinder 12 to drive the scraping plate shell 15 to rotate to achieve the scraping action; through the design of the dust removal device, on the basis of the existing high-speed air flow in the wind tunnel, a dust removal device is added for linkage work. The high-speed flowing air flow in the wind tunnel will push the spiral fan blades 13 to rotate when flowing, and then push the rotating cylinder 12 to rotate. The rotation of the rotating cylinder 12 will drive a plurality of scraping plate shells 15 to rotate through the fixing rods 14. When the scraping plate shell 15 rotates, the sharp ends on its side will scrape the top arc edge of the wind tunnel, thereby achieving the effect of dust removal. The faster the air flow velocity, the faster the spiral fan blades 13 rotate.

[0029] Refer to Figure 5 , the dust collection component includes a collection port 16 and an exhaust port 17 opened on both sides of the scraping plate shell 15. A filter screen 18 is arranged in the exhaust port 17. Two wind plates 19 are hinged on one side of the inner part of the scraping plate shell 15 close to the collection port 16. The wind plates 19 are hinged to the inner wall of the scraping plate shell 15 through spring hinges. The two wind plates 19 block the collection port 16. A check block 20 matched with the wind plates 19 is fixed on the inner wall of the scraping plate shell 15. The dust collection component further includes two groups of dust suction parts fixed inside the scraping plate shell 15. A plurality of connecting plates 24 are arranged between the two groups of dust suction parts. The plurality of connecting plates 24 are evenly arranged along the inner wall of the scraping plate shell 15. A secondary dust suction and filtering block 25 is arranged on the connecting plate 24. A plurality of dust collection grooves 26 are evenly opened on the inner wall of the scraping plate shell 15; through the design of the dust collection component, when the scraping plate shell 15 rotates and scrapes, the negative pressure air flow will carry the dust and enter the inside of the scraping plate shell 15 along the collection port 16 of the scraping plate shell 15. The negative pressure air flow will blow the two wind plates 19, and then push the two wind plates 19 to open. The negative pressure air flow with dust will enter the inside of the scraping plate shell 15 and be adsorbed and filtered by a plurality of dust suction parts, and then discharged from the exhaust port 17 after being filtered by the filter screen 18. When the scraping plate shell 15 stops rotating, under the action of the spring hinge, the two wind plates 19 rotate back to their original positions and butt together to block the collection port 16, preventing the dust in the scraping plate shell 15 from falling and spreading.

[0030] Refer toFigure 6 , the dust suction member includes a main dust suction filter block 22 disposed in the middle of the scraping plate housing 15. The main dust suction filter block 22 is fixedly connected to the inner wall of the scraping plate housing 15 through a plurality of connecting rods 21. A plurality of groups of dust suction filter belts 23 are arranged on the connecting rods 21 in sequence from outside to inside. The main dust suction filter block 22, the dust suction filter belts 23 and the auxiliary dust suction filter block 25 are all made of dust suction sponge. Through the design of the dust suction member, while helping the filter screen 18 perform dust filtering work and avoiding the filter screen 18 being blocked by too much dust, it can also divide the air flow, change the air flow path, and perform detailed dust filtering work through a plurality of auxiliary dust suction filter blocks 25.

[0031] Refer to Figure 5 , a plurality of groups of partition plates 27 are arranged inside the dust collection groove 26, and a plugging plate matching with the dust collection groove 26 is opened on the outer surface of the scraping plate housing 15. Through the design of the plugging plate, it is convenient to clean the dust in the dust collection groove 26 and convenient to maintain the scraping plate housing 15.

[0032] During use, the dust removal device 8 corresponds to the flow direction of the air in the wind tunnel. Because a large amount of fresh air is required during the tunnel construction process, the air flow conveyed by the fan is also very large to meet the oxygen supply demand. Therefore, on the basis of the existing high-speed air flow, the high-speed air flow in the wind tunnel will push the spiral fan blades 13 to rotate when flowing, and then push the rotating cylinder 12 to rotate. The rotation of the rotating cylinder 12 will drive a plurality of scraping plate housings 15 to rotate through the fixing rods 14. When the scraping plate housing 15 rotates, the sharp ends on its side will scrape the top arc edge of the wind tunnel, thereby achieving the effect of dust removal. The faster the flow rate of the air flow, the faster the spiral fan blades 13 will rotate. The high-speed air flow will push a plurality of scraping plate housings 15 to rotate at a high speed to scrape the dust. During scraping, the negative pressure air flow will carry the dust and enter the inside of the scraping plate housing 15 along the collection port 16 of the scraping plate housing 15. The negative pressure air flow will blow the two wind plates 19, and then push the two wind plates 19 to open. The negative pressure air flow with dust will enter the inside of the scraping plate housing 15, and after being adsorbed and filtered by a plurality of dust suction members, it will be discharged from the air outlet 17 after being filtered by the filter screen 18. When the scraping plate housing 15 stops rotating, under the action of the spring hinge, the two wind plates 19 will rotate back to their original positions and then dock together to block the collection port 16, preventing the dust in the scraping plate housing 15 from falling and spreading.

[0033] Although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A double-damper jet tunnel type tunnel ventilation structure, characterized in that: The invention comprises an air supply tunnel (1) and an air exhaust tunnel (2), wherein an air inlet transverse channel 1 (3), an air inlet transverse channel 2 (4) and a wind wall (7) are arranged between the air supply tunnel (1) and the air exhaust tunnel (2), an air suction chamber (5) is arranged at the connection point between the air inlet transverse channel 2 (4) and the exhaust tunnel (2), a double-door air chamber (6) is arranged in the air supply tunnel (1), a first wind belt and a second wind belt are arranged on the air suction chamber (5) and the double-door air chamber (6), respectively, a jet fan matched with the first wind belt and the second wind belt is arranged in the air suction chamber (5) and the double-door air chamber (6), respectively, a dust removal device (8) corresponding to the wind direction is arranged in the air supply tunnel (1) and the air exhaust tunnel (2), and a branch channel (9) is opened at the corresponding position of the dust removal device (8) in the air supply tunnel (1) and the air exhaust tunnel (2).

2. A double damper jet tunnel type tunnel ventilation structure according to claim 1, characterized in that: The dust removal device (8) comprises two groups of support frames (10) fixed in the wind tunnel, the support frames (10) are rotatably connected to a rotating shaft (11), a rotating cylinder (12) is fixed to the rotating shaft (11), a plurality of spiral blades (13) are evenly fixed on one side of the outer surface of the rotating cylinder (12), a plurality of fixed rods (14) are fixed on the other side of the rotating cylinder (12), a scraper shell (15) is fixed at the end of the fixed rod (14), and a dust collecting component is arranged inside the scraper shell (15).

3. A double damper jet tunnel type tunnel ventilation structure according to claim 2, characterized in that: The dust collecting component comprises a collecting port (16) and an exhaust port (17) provided on both sides of the scraper shell (15); a filter screen (18) is provided in the exhaust port (17); two wind plates (19) are hingedly connected to one side of the scraper shell (15) near the collecting port (16); the wind plates (19) are hingedly connected to the inner wall of the scraper shell (15) through spring hinges; the two wind plates (19) cover the collecting port (16); and a check block (20) matching the wind plates (19) is fixed on the inner wall of the scraper shell (15).

4. A double damper jet tunnel type tunnel ventilation structure according to claim 3, characterized in that: The dust collecting assembly also includes two groups of dust collecting parts fixed inside the scraper shell (15), a plurality of connecting plates (24) are arranged between the two groups of dust collecting parts, the plurality of connecting plates (24) are evenly arranged along the inner wall of the scraper shell (15), an auxiliary dust collecting filter block (25) is arranged on the connecting plates (24), and a plurality of dust collecting grooves (26) are evenly opened on the inner wall of the scraper shell (15).

5. A double damper jet tunnel type tunnel ventilation structure according to claim 4, characterized in that: The dust suction component comprises a main dust suction filter block (22) arranged in the middle of the scraper shell (15); the main dust suction filter block (22) is connected and fixed to the inner wall of the scraper shell (15) via a plurality of connecting rods (21); and a plurality of groups of dust suction filter belts (23) are arranged in sequence from the outside to the inside on the connecting rods (21).

6. A double damper jet channel type tunnel ventilation structure according to claim 5, characterized in that: The main dust suction filter block (22), the dust suction filter belt (23) and the auxiliary dust suction filter block (25) are all made of dust suction sponges.

7. A double damper jet channel type tunnel ventilation structure according to claim 6, characterized in that: A plurality of groups of blocking plates (27) are arranged inside the dust collecting groove (26), and a sealing plate matching with the dust collecting groove (26) is provided on the outer surface of the scraper plate shell (15).

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