Tunnel air duct structure

Abstract

The utility model discloses a tunnel air duct structure which comprises a plurality of pipelines, the bottoms of the pipelines are communicated with air outlet pipes, rubber mats abut against the positions between the air outlet pipes and the pipelines, the tunnel air duct structure further comprises a sealing device, and the sealing device is installed between the two pipelines. The airflow adjusting device is installed between the pipeline and the air outlet pipe. The utility model relates to the technical field of tunnel air ducts, through the cooperation of a fixing shell, a filling head and polyurethane foam, when a pipeline is connected, the fixing shell on one side of the pipeline is inserted into the outer wall of the other pipeline, a sealing rubber mat is placed between the two pipelines when the two pipelines are connected, and after the two pipelines are connected in an inserted mode, the sealing rubber mat is fixed to the outer wall of the other pipeline. And polyurethane foam is injected into the fixing shell through the injection head, so that the connecting gap between the sealing rubber mat and the pipeline is completely blocked, and the problem of leakage caused by aging of the sealing rubber mat is avoided.

Description

Technical Field

[0001] This utility model relates to the field of tunnel ventilation duct technology, specifically a tunnel ventilation duct structure. Background Technology

[0002] In food processing, various operations are often carried out in tunnel-like processing spaces, such as drying and cooling food. This requires a good ventilation system to ensure the stability of the processing environment and the uniformity of food processing quality.

[0003] In existing technology, multiple pipes are connected together to form a complete air duct structure, and an air outlet is set at a certain distance on the surface of the air duct so that the gas inside the air duct can be discharged.

[0004] However, in actual use, since the ventilation duct structure is composed of multiple pipes connected together, each pipe is connected with bolts and sealing gaskets. However, after long-term use, the sealing gaskets will age, causing the ventilation duct to leak. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a tunnel ventilation duct structure that solves the problem that, in actual use, the ventilation duct structure is composed of multiple pipes connected together, with each pipe connected by bolts and sealing gaskets. However, after a long period of use, the sealing gaskets will age, leading to leakage in the ventilation duct.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a tunnel ventilation duct structure, comprising a plurality of pipes, with an air outlet pipe connected to the bottom of each pipe, and a rubber gasket abutting between the air outlet pipe and the pipe. The tunnel ventilation duct structure also includes a sealing device installed between two pipes; an airflow regulating device is installed between the pipes and the air outlet pipe; wherein, the pipes are connected together by the sealing device, and the airflow regulating device controls the airflow of the air outlet pipe.

[0007] Preferably, the sealing device includes a fixed shell, which is fixedly connected to the outer wall of one side of the pipe and has its inner wall fitted onto the end of the other side of the pipe; a filling head is connected to the top of the fixed shell; polyurethane foam is filled into the inner wall of the fixed shell; a sealing gasket is pressed against the fixed shell and the pipe, and its outer wall is attached to the inner wall of the polyurethane foam; wherein, through the cooperation of the sealing gasket and the polyurethane foam, the fixed shell seals the pipe, and the filling head fills the polyurethane foam into the fixed shell.

[0008] Preferably, the airflow regulating device includes a rotating plate, which is positioned above the air outlet duct and fits against the bottom of the inner wall of the duct; four regulating plates are provided, all embedded in the inner wall of the rotating plate; a rotating rod is fixedly connected to the bottom of the rotating plate, and its outer wall passes through the bottom of the duct through a sealed bearing; a turntable is fixedly connected to one end of the rotating rod extending to the bottom of the duct; and a limiting device is installed on the top of the turntable; wherein, through the cooperation of the rotating rod and the regulating plates, the turntable drives the rotating plate to rotate, and the limiting device fixes the turntable.

[0009] Preferably, the limiting device includes an insert block inserted into the top of the turntable; a mounting plate fixedly connected to the top of the insert block; a spring pressed against the top of the mounting plate; a mounting shell sleeved on the outer wall of the insert block, with its inner wall pressed against the end of the spring away from the mounting plate, and fixedly connected to the bottom of the pipe; and a threaded rod pressed against the bottom of the mounting plate, with its outer wall threadedly connected to the inner wall of the mounting shell. The threaded rod moves the insert block through the cooperation of the spring and the mounting plate, and the mounting shell supports the insert block.

[0010] Preferably, connecting plates are fixedly connected to the sides of the two pipes that are close to each other, and the two connecting plates are connected together by bolts.

[0011] Beneficial effects

[0012] This utility model provides a tunnel ventilation duct structure. It has the following advantages: Through the cooperation of a fixed shell, an injection head, and polyurethane foam, when connecting pipes, the fixed shell on one side of one pipe is inserted into the outer wall of the other pipe. A sealing gasket is placed in the middle when the two pipes are connected. After the connection is complete, polyurethane foam is injected into the interior of the fixed shell through the injection head. This completely seals the gap between the sealing gasket and the pipe, preventing leakage caused by aging of the sealing gasket.

[0013] Through the cooperation of the insert, mounting plate, and spring, when the turntable rotates, the threaded rod rotates, causing the threaded rod to press against the mounting plate. The mounting plate then moves the insert, separating it from the turntable, allowing the turntable to rotate. When fixing, rotating the threaded rod in the opposite direction causes the mounting plate to return to its original position under the action of the spring, allowing the insert to be inserted into the outer wall of the turntable and fixed to it, preventing accidental contact with the turntable that could cause it to rotate. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the appearance of the present utility model;

[0016] Figure 3 for Figure 1 A three-dimensional structural diagram of the transfer plate and turntable;

[0017] Figure 4 for Figure 1 A structural schematic diagram of the central pipe, fixed shell, and connecting plate;

[0018] Figure 5 for Figure 1 A structural diagram of the central duct, air outlet duct, and rotating plate;

[0019] Figure 6 for Figure 5 A schematic diagram of the structure of the turntable, rotating rod, and spring.

[0020] In the diagram: 1. Pipe; 11. Air outlet pipe; 12. Gasket; 13. Connecting plate; 14. Bolt; 2. Sealing device; 21. Fixing shell; 22. Filling head; 23. Polyurethane foam; 24. Sealing gasket; 3. Airflow regulating device; 31. Rotating plate; 32. Adjusting plate; 33. Rotating rod; 34. Turntable; 35. Limiting device; 351. Insert block; 352. Mounting plate; 353. Spring; 354. Mounting shell; 355. Threaded rod. Detailed Implementation

[0021] 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.

[0022] In actual use, the ventilation duct structure is made up of multiple pipes connected together, with each pipe connected by bolts and sealing gaskets. However, after long-term use, the sealing gaskets will age, causing the ventilation duct to leak.

[0023] In view of this, the present invention provides a tunnel ventilation duct structure, which solves the problem that in actual use, the ventilation duct structure is composed of multiple pipes connected together, and each pipe is connected together with bolts and sealing gaskets. However, after a long period of use, the sealing gaskets will age, leading to leakage in the ventilation duct.

[0024] Those skilled in the art can connect the components in this case sequentially. The specific connection and operation sequence should refer to the working principle described below. The detailed connection methods are well-known technologies in the field. The working principle and process are mainly described below.

[0025] Example 1: By Figure 1-6It is known that a tunnel ventilation duct structure includes a pipe 1, which is provided in several parts. The bottom of the pipe 1 is connected to an air outlet pipe 11. A rubber gasket 12 is pressed between the air outlet pipe 11 and the pipe 1. The tunnel ventilation duct structure also includes a sealing device 2 and an airflow regulating device 3. The sealing device 2 is installed between two pipes 1. The airflow regulating device 3 is installed between the pipe 1 and the air outlet pipe 11. The pipes 1 are connected together by the sealing device 2, and the airflow regulating device 3 controls the airflow of the air outlet pipe 11.

[0026] In the specific implementation process, it is worth noting that there are several pipes 1, and the bottom of each pipe 1 is connected to an air outlet pipe 11. A gasket 12 is installed between the air outlet pipe 11 and the pipe 1 to prevent leakage between the air outlet pipe 11 and the pipe 1. A sealing device 2 is used to seal each pipe 1 to prevent leakage of the sealing gasket 24. In addition, when exhausting air, an airflow regulating device 3 is used to control the air volume of the air outlet pipe 11.

[0027] Furthermore, the sealing device 2 includes a fixed shell 21, an injection head 22, polyurethane foam 23, and a sealing gasket 24. The fixed shell 21 is fixedly connected to the end of one side of the pipe 1, and its inner wall is fitted onto the outer wall of the other side of the pipe 1. The injection head 22 is connected to the top of the fixed shell 21. The polyurethane foam 23 is filled into the inner wall of the fixed shell 21. The sealing gasket 24 is pressed against the fixed shell 21 and the pipe 1, and its outer wall is attached to the inner wall of the polyurethane foam 23. The fixed shell 21 seals the pipe 1 through the cooperation of the sealing gasket 24 and the polyurethane foam 23, and the injection head 22 fills the fixed shell 21 with polyurethane foam 23.

[0028] In the specific implementation process, it is worth noting that a fixed shell 21 is installed on one side of each pipe 1, and an opening corresponding to the fixed shell 21 is provided on the other side. This makes it convenient to connect the two pipes 1. Moreover, polyurethane foam 23 is injected into the fixed shell 21 through the injection head 22. After the polyurethane foam 23 solidifies, it will wrap the connection of the two pipes 1 and the sealing gasket 24, preventing leakage and isolating the sealing gasket 24 from the gas, thereby ensuring that the sealing gasket 24 will not age and leak.

[0029] Furthermore, the airflow regulating device 3 includes a rotating plate 31, an adjusting plate 32, a rotating rod 33, a turntable 34, and a limiting device 35. The rotating plate 31 is disposed above the air outlet duct 11 and is attached to the bottom of the inner wall of the duct 1. Four adjusting plates 32 are provided, all of which are embedded in the inner wall of the rotating plate 31. The rotating rod 33 is fixedly connected to the bottom of the rotating plate 31, and its outer wall passes through the bottom of the duct 1 through a sealed bearing. The turntable 34 is fixedly connected to one end of the rotating rod 33 that extends to the bottom of the duct 1. The limiting device 35 is installed on the top of the turntable 34. The rotating rod 33 and the adjusting plate 32 cooperate to make the turntable 34 drive the rotating plate 31 to rotate, and the limiting device 35 fixes the turntable 34.

[0030] In the specific implementation process, it is worth noting that four adjusting plates 32 are embedded inside the rotating plate 31, and the size and number of through holes on the surface of each adjusting plate 32 are different. One of the adjusting plates 32 has no through holes on its surface, which can seal the air outlet pipe 11. When adjusting the air volume of the air outlet pipe 11, the rotating plate 34 is used to drive the rotating rod 33 to rotate, so that the rotating plate 31 aligns the different adjusting plates 32 with the opening of the air outlet pipe 11. This makes it more convenient to adjust the air volume. The rotating plate 34 is fixed by the limiting device 35 to prevent the rotating plate 31 from rotating due to accidental contact. A sealing gasket is set between the adjusting plate 32 and the pipe 1 to prevent leakage from the gap between the adjusting plate 32 and the pipe 1.

[0031] Specifically, when using this tunnel ventilation structure, during the installation of pipe 1, the side of pipe 1 with the fixing shell 21 is inserted into the side of another pipe 1 without the fixing shell 21. During installation, a sealing gasket 24 is placed between pipes 1 to make the connection between pipes 1 tighter. After installation, polyurethane foam 23 is filled into the inside of the fixing shell 21 through the filling head 22. As the polyurethane foam 23 solidifies, it wraps the connection between the two pipes 1 and the sealing gasket 24, isolating the sealing gasket 24 from the external gas. This can reduce the aging rate of the sealing gasket 24. When using pipe 1, the turntable 34 drives the rotating rod 33 to rotate. Since the end of the rotating rod 33 away from the turntable 34 is fixedly connected to the rotating plate 31, when the rotating rod 33 rotates, it will drive the rotating plate 31 to rotate, aligning the different adjustment plates 32 on its surface with the air outlet pipe 11, thereby changing the air volume of the air outlet pipe 11.

[0032] Example 2: From Figure 1-6It is understood that the limiting device 35 includes an insert block 351, a mounting plate 352, a spring 353, a mounting shell 354, and a threaded rod 355. The insert block 351 is inserted into the top of the turntable 34; the mounting plate 352 is fixedly connected to the top of the insert block 351; the spring 353 abuts against the top of the mounting plate 352; the mounting shell 354 is sleeved on the outer wall of the insert block 351, and its inner wall abuts against the end of the spring 353 away from the mounting plate 352, and is fixedly connected to the bottom of the pipe 1; the threaded rod 355 abuts against the bottom of the mounting plate 352, and its outer wall is threadedly connected to the inner wall of the mounting shell 354; wherein, through the cooperation of the spring 353 and the mounting plate 352, the threaded rod 355 drives the insert block 351 to move, and the mounting shell 354 supports the insert block 351.

[0033] In the specific implementation process, it is worth noting that the outer wall of the threaded rod 355 is threadedly connected to the inner wall of the mounting shell 354, and the end of the threaded rod 355 extending into the interior of the mounting shell 354 abuts against the outer wall of the mounting plate 352. The contact point with the mounting plate 352 is a smooth circular cross section. When the threaded rod 355 rotates, it will rotate on the outer wall of the mounting plate 352. Since the outer wall of the threaded rod 355 is threadedly connected to the inner wall of the mounting shell 354, the threaded rod 355 can move telescopically within the mounting shell 354. This allows the mounting plate 352 to drive the insert block 351 to move, and the insert block 351 to move on the outer wall of the turntable 34. When the squeezing force of the threaded rod 355 on the mounting plate 352 decreases, the mounting plate 352 will, under the action of the spring 353, extend the insert block 351 out of the mounting shell 354 and lock it on the outer wall of the turntable 34.

[0034] Furthermore, connecting plates 13 are fixedly connected to the sides of the two pipes 1 that are close to each other, and the two connecting plates 13 are connected together by bolts 14;

[0035] In the specific implementation process, it is worth noting that connecting plates 13 are fixedly connected to the sides of the two pipes 1 that are close to each other. When connecting pipes 1, the connecting plates 13 are aligned, and bolts 14 are passed through the two connecting plates 13. The nuts are tightened on the outer wall of the bolts 14 to fix the two pipes 1 together.

[0036] Specifically, based on the above embodiments, when connecting pipe 1, bolts 14 are used to connect the connecting plates 13 on the outer wall of pipe 1 together, which can fix the two pipes 1. When adjusting the air volume of the air outlet pipe 11, the threaded rod 355 is rotated to increase the movement distance of the mounting plate 352 inside the mounting housing 354. In this way, the mounting plate 352 moves under the action of the spring 353, causing the insert 351 to extend out from the mounting housing 354 and be inserted into the outer wall of the turntable 34 to fix it. This can prevent the turntable 31 from rotating in case of accidental contact, thus playing a safety role.

[0037] 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 duct structure, comprising a duct (1), characterized in that: The pipe (1) is provided in several parts, and the bottom of the pipe (1) is connected to an air outlet pipe (11). A rubber gasket (12) is pressed between the air outlet pipe (11) and the pipe (1). The tunnel ventilation structure also includes: A sealing device (2) is installed between two pipes (1); An airflow regulating device (3) is installed between the pipe (1) and the air outlet pipe (11); The pipes (1) are connected together by the sealing device (2), and the airflow regulating device (3) controls the airflow of the air outlet pipe (11).

2. The tunnel ventilation duct structure according to claim 1, characterized in that: The sealing device (2) includes: A fixed shell (21) is fixedly connected to the end of one side pipe (1), and its inner wall is fitted onto the outer wall of the other side pipe (1). The filling head (22) is connected to the top of the fixed shell (21); Polyurethane foam (23) is filled into the inner wall of the fixed shell (21); The sealing gasket (24) is pressed against the fixed shell (21) and the pipe (1), and its outer wall is attached to the inner wall of the polyurethane foam (23); The sealing gasket (24) and polyurethane foam (23) work together to seal the pipe (1) with the fixed shell (21), and the filling head (22) fills the fixed shell (21) with polyurethane foam (23).

3. The tunnel ventilation duct structure according to claim 1, characterized in that: The airflow regulating device (3) includes: The rotating plate (31) is set above the air outlet pipe (11) and attached to the bottom of the inner wall of the pipe (1); There are four adjustment plates (32), all of which are embedded in the inner wall of the rotating plate (31); The rotating rod (33) is fixedly connected to the bottom of the rotating plate (31), and its outer wall passes through the bottom of the pipe (1) through a sealed bearing; Turntable (34) is fixedly connected to one end of the rotating rod (33) extending to the bottom of the pipe (1); A limiting device (35) is installed on the top of the turntable (34); The rotating rod (33) and the adjusting plate (32) work together to make the turntable (34) drive the rotating plate (31) to rotate, and the limiting device (35) fixes the turntable (34).

4. A tunnel ventilation duct structure according to claim 3, characterized in that: The limiting device (35) includes: Insert (351) is inserted into the top of turntable (34); Mounting plate (352) is fixedly connected to the top of insert block (351); Spring (353) abuts against the top of mounting plate (352); The mounting shell (354) is fitted onto the outer wall of the insert (351), and the inner wall is pressed against the end of the spring (353) away from the mounting plate (352), and is fixedly connected to the bottom of the pipe (1); The threaded rod (355) abuts against the bottom of the mounting plate (352), and its outer wall is threaded to the inner wall of the mounting housing (354); The spring (353) and the mounting plate (352) work together to move the threaded rod (355) and the insert (351), and the mounting shell (354) supports the insert (351).

5. A tunnel ventilation duct structure according to claim 1, characterized in that: Two pipes (1) are respectively fixedly connected to each other on their sides, and the two connecting plates (13) are connected together by bolts (14).

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