Fireproof air pipe with telescopic function

Abstract

The utility model relates to the technical field of air pipes, and discloses a fireproof air pipe with a telescopic function, which comprises a connecting frame, a fixed air pipe is fixedly connected to the left side of the connecting frame, a telescopic air pipe is slidably connected to the inner wall of the left side of the fixed air pipe, and a filter screen is fixedly connected to the middle end of the connecting frame. An electric push rod is fixedly connected to the top of the connecting frame, a push plate is fixedly connected to the output end of the electric push rod, a scraper is fixedly connected to the bottom of the left side of the push plate, a rotating shaft is rotationally connected to the bottom of the connecting frame, and a rotating plate is fixedly connected to the outer ring of the rotating shaft. Impurities in the air pipe are blocked through the filter screen, the impurities on the filter screen are cleaned through the electric push rod, the push plate and the scraper blade, the impurities are blocked through the torsional spring, the rotating shaft and the rotating plate, when the force of the electric push rod is large, the rotating plate is opened, the impurities are discharged, and the rotating plate is reset through the torsional spring, so that the air quality is improved; allergens and health risks are reduced, energy consumption is reduced, and the operation cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of air ducts, in particular to a fireproof air duct with a telescopic function. Background Technique

[0002] An air duct is a pipeline system used for air transportation and distribution. There are two types: composite air ducts and inorganic air ducts. It can be classified according to cross-sectional shape and material. Generally, a ventilation duct is made of galvanized sheet, and each section of the ventilation duct is connected by a flange. Sealant is applied to the gaps such as the bite seam, rivet seam, and the four corners of the flange flanging. Before applying the sealant, the surface dust and oil stains should be removed. According to the cross-sectional shape, the air duct can be divided into various types such as circular air ducts, rectangular air ducts, and oval air ducts. Among them, the circular air duct has the smallest resistance but the largest height dimension and is complex to manufacture, so rectangular air ducts are mainly used in applications.

[0003] Modern air duct systems can effectively filter dust, particulate matter, and pollutants in the air, thereby improving indoor air quality. An efficient filtration system can significantly reduce allergens and harmful substances in the air.

[0004] Impurities inside the air duct may lead to a decline in air quality and affect health. Impurities such as dust, mold, or dirt can block the air duct, reduce the air flow rate, and lower the system efficiency. In addition, long-term accumulation of impurities may cause the system to overheat or be damaged, increasing the maintenance and cleaning costs.

[0005] In view of the above problems, a fireproof air duct with a telescopic function is proposed. Content of the Utility Model

[0006] The purpose of the utility model is to provide a fireproof air duct with a telescopic function, which solves the problem that long-term accumulation of impurities in the background technology may cause the system to overheat or be damaged, increasing the maintenance and cleaning costs.

[0007] To achieve the above purpose, the utility model provides the following technical solutions: A fireproof air duct with a telescopic function includes a connection frame. A fixed air duct is fixedly connected to the left side of the connection frame. A telescopic air duct is slidably connected to the inner wall of the left side of the fixed air duct. A filter screen is fixedly connected to the middle end of the connection frame. An electric push rod is fixedly connected to the top of the connection frame. A push plate is fixedly connected to the output end of the electric push rod. A scraper is fixedly connected to the bottom left side of the push plate. A rotating shaft is rotatably connected to the bottom of the connection frame. A rotating plate is fixedly connected to the outer circle of the rotating shaft. Torsion springs are fixedly connected to the outer circles of the front and rear ends of the rotating shaft, and one end of the torsion spring is fixedly connected to the connection frame. An installation component is arranged on the left side of the telescopic air duct.

[0008] By adopting the above technical solutions, the connection frame is connected to the air outlet end. The impurities on the filter screen are cleaned by the scraper. The wind deflector on one side of the push plate pushes the impurities downward to discharge the impurities.

[0009] As a further description of the above technical solution: The installation component includes a flange, the flange is fixedly connected to the outer wall of the left side of the telescopic air duct, and a bidirectional threaded rod is rotatably connected inside the rear end of the flange.

[0010] By adopting the above technical solution, the bidirectional threaded rod rotates inside the flange.

[0011] As a further description of the above technical solution: A first limiting plate is fixedly connected to the outer wall of the right side of the telescopic air duct, and a second limiting plate is fixedly connected to the outer wall of the left side of the fixed air duct.

[0012] By adopting the above technical solution, the second limiting plate is contacted by the first limiting plate for limit control.

[0013] As a further description of the above technical solution: A limiting disc is fixedly connected to the outer ring of the rear end of the bidirectional threaded rod.

[0014] By adopting the above technical solution, the two nut pairs are limited by the limiting disc.

[0015] As a further description of the above technical solution: Bolts are threadedly connected between the limiting disc and the inner wall of the flange.

[0016] By adopting the above technical solution, the bidirectional threaded rod is controlled by the bolts.

[0017] As a further description of the above technical solution: Nut pairs are threadedly connected to the outer rings of the front and rear ends of the bidirectional threaded rod, a moving plate is fixedly connected to the left side of the nut pair, and an extrusion plate is fixedly connected to the outer wall of the left side of the moving plate.

[0018] By adopting the above technical solution, the connected flange is fixed by the extrusion plate, which is convenient for connection.

[0019] As a further description of the above technical solution: Extrusion members are fixedly connected to the four corner positions of the outer wall of the left side of the flange, and a limiting ring is fixedly connected to the outer ring of the middle end of the bidirectional threaded rod.

[0020] By adopting the above technical solution, it is convenient to connect and fix the flange through the extrusion members.

[0021] As a further description of the above technical solution: A limiting rod penetrates through and is slidably connected inside the nut pair, and the limiting rod is fixedly connected to the flange.

[0022] By adopting the above technical solution, the nut pair is guided and limited by the limiting rod.

[0023] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0024] 1. A fireproof air duct with a telescopic function provided by the present utility model first blocks impurities in the air duct through a filter screen, and cleans the impurities on the filter screen by an electric push rod, a pushing plate and a scraping plate. The impurities are blocked by a torsion spring, a rotating shaft and a rotating plate. When the force of the electric push rod is large, the rotating plate is opened to discharge the impurities, and the torsion spring resets, thereby improving air quality, reducing allergens and health risks, reducing the resistance of the air duct system, improving system efficiency, reducing energy consumption and saving operation costs.

[0025] 2. A fireproof air duct with a telescopic function provided by the present utility model rotates a bidirectional threaded rod to move a nut pair, so that a moving plate and an extrusion plate at the top of the nut pair move, and the extrusion and the moving plate can fix flange connectors of different sizes, which is beneficial to the safety and civilization of the construction site, has a simple operation and improves the installation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0027] Figure 2 is an exploded structure diagram of the telescopic air duct of the present utility model;

[0028] Figure 3 is an exploded structure diagram of the connection frame of the present utility model;

[0029] Figure 4 is an exploded structure diagram of the filter screen of the present utility model;

[0030] Figure 5 is an exploded structure diagram of the flange of the present utility model.

[0031] In the figure: 1. Connection frame; 2. Fixed air duct; 3. Telescopic air duct; 4. Flange; 5. First limit plate; 6. Second limit plate; 7. Electric push rod; 8. Pushing plate; 9. Rotating plate; 10. Filter screen; 11. Scraping plate; 12. Rotating shaft; 13. Torsion spring; 14. Extrusion part; 15. Bolt; 16. Limit sleeve; 17. Bidirectional threaded rod; 18. Limit rod; 19. Nut pair; 20. Moving plate; 21. Extrusion plate; 22. Limit ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0033] To further understand the content of the present utility model, a detailed description of the present utility model will be made with reference to the accompanying drawings.

[0034] Referring to Figure 1 and Figure 2 As shown in the figures, a fireproof air duct with a telescopic function of the present utility model includes a connection frame 1. A fixed air duct 2 is fixedly connected to the left side of the connection frame 1. A telescopic air duct 3 is slidably connected to the inner wall of the left side of the fixed air duct 2. The telescopic air duct 3 telescopically moves within the inner wall of the fixed air duct 2. When the telescopic air duct 3 needs to be pulled to the longest length, a first limit plate 5 is fixedly connected to the outer wall of the right side of the telescopic air duct 3, and a second limit plate 6 is fixedly connected to the outer wall of the left side of the fixed air duct 2. The telescopic air duct 3 is limited and controlled by the first limit plate 5 and the second limit plate 6.

[0035] Referring to Figure 3 and Figure 4 As shown in the figures, a filter screen 10 is fixedly connected to the middle end of the connection frame 1. Impurities are filtered through the filter screen 10, and the filter screen 10 is for iron. It can be cleaned by a scraping plate 11. An electric push rod 7 is fixedly connected to the top of the connection frame 1. The output end of the electric push rod 7 is fixedly connected to a pushing plate 8. The scraping plate 11 is fixedly connected to the bottom left side of the pushing plate 8. A rotating shaft 12 is rotatably connected to the bottom of the connection frame 1. A rotating plate 9 is fixedly connected to the outer circle of the rotating shaft 12. Torsion springs 13 are fixedly connected to the outer circles of the front and rear ends of the rotating shaft 12, and one end of the torsion spring 13 is fixedly connected to the connection frame 1. By pushing the pushing plate 8 to move through the electric push rod 7, the impurities on the filter screen 10 are cleaned by the scraping plate 11. When it reaches the bottom, the rotating plate 9 is squeezed by the electric push rod 7, and the rotating plate 9 can be opened only by applying force to push out the impurities. The electric push rod 7 moves upward, and the rotating plate 9 is reset by the torsion spring 13.

[0036] Referring to Figure 5, an installation component is provided on the left side of the telescopic air duct 3. The installation component includes a flange 4. The flange 4 is fixedly connected to the outer wall on the left side of the telescopic air duct 3. A bidirectional threaded rod 17 is rotatably connected inside the rear end of the flange 4. A limiting sleeve 16 is fixedly connected to the outer ring at the rear end of the bidirectional threaded rod 17. A bolt 15 is threadedly connected between the limiting sleeve 16 and the inner wall of the flange 4. Nut pairs 19 are threadedly connected to the outer rings at both the front and rear ends of the bidirectional threaded rod 17. A moving plate 20 is fixedly connected to the left side of the nut pair 19. An extrusion plate 21 is fixedly connected to the outer wall on the left side of the moving plate 20. Extrusion members 14 are fixedly connected to the four corners of the outer wall on the left side of the flange 4. A limiting ring 22 is fixedly connected to the outer ring in the middle of the bidirectional threaded rod 17. A limiting rod 18 passes through and is slidably connected inside the nut pair 19, and the limiting rod 18 is fixedly connected to the flange 4. The bolt 15 is rotated out from inside the limiting sleeve 16 and the flange 4. The bidirectional threaded rod 17 is rotated to move the nut pair 19. The limiting rod 18 guides the nut pair 19, so that the moving plate 20 at the top of the nut pair 19 and the extrusion member 14 move, enabling the limiting rod 18 and the moving plate 20 to fix flange connectors of different sizes.

[0037] Working principle: The bolt 15 is rotated out from inside the limiting sleeve 16 and the flange 4. The bidirectional threaded rod 17 is rotated to move the nut pair 19. The limiting rod 18 guides the nut pair 19, so that the moving plate 20 at the top of the nut pair 19 and the extrusion member 14 move, enabling the limiting rod 18 and the moving plate 20 to fix flange connectors of different sizes. The telescopic air duct 3 expands and contracts inside the fixed air duct 2. The telescopic air duct 3 needs to be pulled to the longest length. The telescopic air duct 3 is limited and controlled by the first limiting plate 5 and the second limiting plate 6. The electric push rod 7 is used to push the pushing plate 8 to move. The scraper 11 is used to clean the impurities on the filter net 10 to the bottom. The electric push rod 7 squeezes the rotating plate 9, and force is required to open the rotating plate 9 to push out the impurities. The electric push rod 7 moves upward, and the rotating plate 9 is reset by the torsion spring 13.

[0038] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0039] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A fireproof air duct with a telescopic function, comprising a connecting frame (1), characterized in that: A fixed air duct (2) is fixedly connected to the left side of the connection frame (1). A telescopic air duct (3) is slidably connected to the inner wall of the left side of the fixed air duct (2). A filter screen (10) is fixedly connected to the middle end of the connection frame (1). An electric push rod (7) is fixedly connected to the top of the connection frame (1). A push plate (8) is fixedly connected to the output end of the electric push rod (7). A scraper (11) is fixedly connected to the bottom left side of the push plate (8). A rotating shaft (12) is rotatably connected to the bottom of the connection frame (1). A rotating plate (9) is fixedly connected to the outer ring of the rotating shaft (12). Torsion springs (13) are fixedly connected to the outer rings of the front and rear ends of the rotating shaft (12), and one end of the torsion spring (13) is fixedly connected to the connection frame (1). An installation component is arranged on the left side of the telescopic air duct (3).

2. The fire-proof air duct with a telescopic function according to claim 1, characterized in that: The installation component includes a flange (4). The flange (4) is fixedly connected to the outer wall of the left side of the telescopic air duct (3). A bidirectional threaded rod (17) is rotatably connected to the inside of the rear end of the flange (4).

3. A fireproof air duct with a telescopic function according to claim 1, characterized in that: A first limiting plate (5) is fixedly connected to the outer wall of the right side of the telescopic air duct (3). A second limiting plate (6) is fixedly connected to the outer wall of the left side of the fixed air duct (2).

4. A fireproof air duct with a telescopic function according to claim 2, characterized in that: A limiting disc (16) is fixedly connected to the outer ring of the rear end of the bidirectional threaded rod (17).

5. The fireproof air duct with a telescopic function according to claim 4, characterized in that: The limiting disc (16) and the inner wall of the flange (4) are threadedly connected with bolts (15).

6. The fireproof air duct with a telescopic function according to claim 2, wherein: Nut pairs (19) are threadedly connected to the outer rings of the front and rear ends of the bidirectional threaded rod (17). A moving plate (20) is fixedly connected to the left side of the nut pair (19). An extrusion plate (21) is fixedly connected to the outer wall of the left side of the moving plate (20).

7. The fire-proof air duct with a telescopic function according to claim 2, characterized in that: Extrusion members (14) are fixedly connected to the four corner positions of the outer wall of the left side of the flange (4). A limiting ring (22) is fixedly connected to the outer ring of the middle end of the bidirectional threaded rod (17).

8. The fire duct with a telescopic function according to claim 6, characterized in that: A limiting rod (18) penetrates through and is slidably connected to the inside of the nut pair (19), and the limiting rod (18) is fixedly connected to the flange (4).

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