Galvanized iron sheet air pipe connecting structure convenient to install

Abstract

The utility model discloses a galvanized iron sheet air pipe connecting structure convenient to install, which comprises an iron sheet air pipe, connecting plates are arranged at the two ends of the iron sheet air pipe, a sealing gasket is arranged on the connecting plate on one side, the end face of the connecting plate on the other side is arranged in an embedded groove shape and corresponds to the sealing gasket, end plates are arranged at the two ends of the iron sheet air pipe, and the sealing gasket is arranged in the embedded groove shape. A quick connecting device is arranged on the outer side wall of the iron sheet air pipe, and cleaning devices are arranged in the end plates and the iron sheet air pipe. The utility model belongs to the technical field of galvanized iron sheet air pipes, and particularly relates to a galvanized iron sheet air pipe connecting structure convenient to install, which solves the problems that a sealing gasket is easy to extrude and deform to cause an air leakage phenomenon when the existing iron sheet air pipe is connected, a large number of sundries are easy to adhere to the inner wall of the iron sheet air pipe after long-time use, and the cleaning is inconvenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of galvanized iron sheet air ducts, and specifically refers to a connection structure of a galvanized iron sheet air duct that is convenient for installation. Background Art

[0002] The galvanized iron sheet air duct is a kind of air duct, which is formed by folding and biting galvanized iron sheet for many times. Most of them are connected by common plate flanges or angle steel flanges to form a ventilation duct. The galvanized iron sheet air duct has low cost, fast delivery and high cost performance, so it is widely used in fresh air exhaust, air conditioning ventilation, fire smoke exhaust and other fields.

[0003] When the existing iron sheet air ducts are connected, generally a sealing gasket needs to be placed at the connection part. Then, when the end flange is tightened, the sealing gasket is easily squeezed and deformed or even squeezed and damaged, resulting in air leakage. After the existing iron sheet air ducts are used for a long time, a large amount of sundries or dust will adhere to the inner wall, which is not convenient for cleaning. Therefore, improvements are needed. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is that when the existing iron sheet air ducts are connected, the sealing gasket is easily squeezed and deformed, resulting in air leakage, and after being used for a long time, a large amount of sundries easily adhere to the inner wall of the iron sheet air duct, which is not convenient for cleaning.

[0005] In order to achieve the above functions, the technical solution adopted by the utility model is as follows: a connection structure of a galvanized iron sheet air duct that is convenient for installation, including a galvanized iron sheet air duct. Connecting plates are provided at both ends of the galvanized iron sheet air duct. A sealing gasket is provided on one side of the connecting plate. The end face of the other side of the connecting plate is arranged in an embedded groove shape and corresponds to the sealing gasket. Strip-shaped end plates are provided at both ends of the galvanized iron sheet air duct. A quick connection device is provided on the outer wall of the galvanized iron sheet air duct. A cleaning device is provided in the strip-shaped end plate and the galvanized iron sheet air duct; the cleaning device includes a lead screw, the lead screw rotates on the strip-shaped end plate, a scraper is slidably arranged on the inner wall of the galvanized iron sheet air duct, a rib plate is arranged between the scrapers, the rib plate is threadedly connected with the lead screw, a second bevel gear is arranged on the lead screw, a second handwheel rotates in the galvanized iron sheet air duct, and a first bevel gear is arranged at the end of the second handwheel and meshes with the second bevel gear. Through the meshing of the first bevel gear and the second bevel gear, the rotation of the lead screw is realized, so as to drive the scraper to slide on the inner wall of the galvanized iron sheet air duct to complete the cleaning of sundries on the inner wall of the galvanized iron sheet air duct.

[0006] Further, the quick connection device includes threaded holes, which are located in the four sides of the connecting plate. A fixing block is fixedly connected to the outer wall of the galvanized iron sheet air duct. A bolt is threadedly connected in the fixing block, the bolt is aligned with the threaded hole, and a first handwheel is arranged at the end of the bolt. When installing two groups of galvanized iron sheet air ducts, the sealing gasket can be inserted into the embedded groove of the other side connecting plate, and the bolts will be screwed into the two groups of connecting plates at the same time to complete the quick installation connection.

[0007] Preferably, the vertical cross-section of the gasket is in an H shape, and the gasket can be snap-fitted into the embedding groove of the other connecting plate to complete the sealing, and will not be squeezed and deformed at the same time.

[0008] Preferably, the second bevel gear is located at the end of the lead screw close to the strip end plate, and the first bevel gear will ensure that the meshing relationship with the second bevel gear will not disengage from the second bevel gear.

[0009] Preferably, a dust scraping layer is provided at the edge of the scraper. The dust scraping layer is made of silica gel material, and the dust scraping layer can better fit on the inner wall of the iron sheet air duct to scrape off sundries.

[0010] The beneficial effects obtained by the present utility model adopting the above structure are as follows:

[0011] 1. By setting the cleaning device, the present utility model can clean the dust and attached sundries on the inner wall of the iron sheet air duct, keep the inner wall of the iron sheet air duct clean, and at the same time, it is very convenient to clean the ash without disassembling the iron sheet air duct.

[0012] 2. By setting the quick connection device, the present utility model can quickly install, connect and fix two groups of iron sheet air ducts. The gasket is sealed by an insertion snap-fit method, keeping the integrity of the gasket from being squeezed and damaged, with good sealing effect and no air leakage phenomenon. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is an overall three-dimensional view of a connection structure of a galvanized iron sheet air duct convenient for installation of the present utility model;

[0014] Figure 2 is a structural diagram of the cleaning device of a connection structure of a galvanized iron sheet air duct convenient for installation of the present utility model;

[0015] Figure 3 is Figure 1 a partial cross-sectional view of the gasket in

[0016] Among them, 1. Iron sheet air duct, 2. Connecting plate, 3. Gasket, 4. Strip end plate, 5. Quick connection device, 6. Cleaning device, 7. Lead screw, 8. Rib plate, 9. Scraper, 10. Second bevel gear, 11. Second handwheel, 12. First bevel gear, 13. Threaded hole, 14. Fixed block, 15. Bolt, 16. First handwheel, 17. Dust scraping layer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The technical solution of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are 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.

[0018] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0019] As Figures 1-3 , a galvanized iron air duct connection structure convenient for installation of the present utility model includes an iron air duct 1. Connecting plates 2 are provided at both ends of the iron air duct 1. A sealing gasket 3 is provided on one side connecting plate 2. The vertical cross-section of the sealing gasket 3 is in an H shape. The sealing gasket 3 can be buckled into the embedding groove of the other side connecting plate 2 to complete the sealing and will not be squeezed and deformed at the same time. The end face of the other side connecting plate 2 is in an embedding groove shape and corresponds to the sealing gasket 3. Strip-shaped end plates 4 are provided at both ends of the iron air duct 1. A quick connection device 5 is provided on the side wall of the iron air duct 1. A cleaning device 6 is provided in the strip-shaped end plate 4 and the iron air duct 1.

[0020] As Figures 1-2 , the cleaning device 6 includes a lead screw 7. The lead screw 7 rotates on the strip-shaped end plate 4. A scraping plate 9 is slidably provided on the inner wall of the iron air duct 1. A dust scraping layer 17 is provided at the edge of the scraping plate 9. The dust scraping layer 17 is made of silica gel material. The dust scraping layer 17 can better fit on the inner wall of the iron air duct 1 to scrape off sundries. A rib plate 8 is provided between the scraping plates 9. The rib plate 8 is threadedly connected to the lead screw 7. A second bevel gear 10 is provided on the lead screw 7. A second handwheel 11 is rotatably provided in the iron air duct 1. A first bevel gear 12 is provided at the end of the second handwheel 11 and meshes with the second bevel gear 10. The second bevel gear 10 is located at the end of the lead screw 7 close to the strip-shaped end plate 4. The first bevel gear 12 will ensure that the meshing relationship with the second bevel gear 10 will not disengage from the second bevel gear 10. By meshing the first bevel gear 12 with the second bevel gear 10, the rotation of the lead screw 7 is realized, thereby driving the scraping plate 9 to slide on the inner wall of the iron air duct 1 to complete the cleaning of the sundries on the inner wall of the iron air duct 1.

[0021] As Figure 1, the quick connection device 5 includes a threaded hole 13 which is located on four sides of the connecting plate 2. A fixing block 14 is fixedly connected to the outer wall of the iron sheet air duct 1. A bolt 15 is threadedly connected in the fixing block 14. The bolt 15 is aligned with the threaded hole 13. A first handwheel 16 is provided at the end of the bolt 15. When installing two groups of iron sheet air ducts 1, the sealing gasket 3 can be inserted into the embedding groove of the other connecting plate 2, and the bolt 15 will be screwed into the two connecting plates 2 at the same time to complete the quick installation connection.

[0022] During specific use, when installing two groups of galvanized iron sheet air ducts 1, first butt the connecting plates 2 against each other, so that the connecting plate 2 on one side of the sealing gasket 3 faces the connecting plate 2 with the embedding groove, and squeeze the two connecting plates 2. The sealing gasket 3 will be squeezed into the embedding groove to achieve snap-in sealing. Rotate the first handwheel 16, and the bolt 15 will be screwed into the fixing block 14 and pass through the two connecting plates 2 to complete the installation and fixation of the two groups of iron sheet air ducts 1, which is very convenient for installation.

[0023] When it is necessary to clean the sundries on the inner wall of the iron sheet air duct 1, by rotating the second handwheel 11 on the outside of the iron sheet air duct 1, the first bevel gear 12 meshes with the second bevel gear 10 to rotate. The second bevel gear 10 drives the lead screw 7 to rotate in the strip-shaped end plate 4. The lead screw 7 will drive the rib plate 8 to slide, and the scraper 9 will slide on the inner wall of the iron sheet air duct 1. The inner wall of the iron sheet air duct 1 can be well cleaned through the ash scraping layer 17, and the sundries cleaned will be discharged along the air flow in the iron sheet air duct 1.

[0024] The above describes the present invention and its implementation manners. This description is not restrictive. What is shown in the drawings is only one of the implementation manners of the present invention, and the actual structure is not limited thereto. All in all, if those of ordinary skill in the art are inspired by it and without departing from the creative purpose of the present invention, without creative design, structures and embodiments similar to the technical solution are designed, they should all fall within the protection scope of the present invention.

Claims

1. A galvanized iron sheet air duct connection structure that is easy to install, comprising an iron sheet air duct, with connecting plates provided at both ends of the iron sheet air duct, characterized in that: A sealing gasket is provided on the connecting plate on one side, and the end face of the connecting plate on the other side is arranged in an embedded groove shape and corresponds to the sealing gasket. Strip end plates are provided at both ends of the iron air duct, and a quick connection device is provided on the outer wall of the iron air duct. Cleaning devices are provided in the strip end plates and the iron air duct.

2. The galvanized iron air duct connection structure that is easy to install according to claim 1 is characterized in that: The cleaning device includes a screw rod, which is rotated on a strip end plate through its end portion, a scraper is slidably provided on the inner wall of the iron air duct, ribs are provided between the scrapers, the ribs are threadedly connected to the screw rod, and two bevel teeth are provided on the screw rod. A hand wheel two is rotatably provided in the iron air duct, and a bevel tooth one is provided at the end of the hand wheel two and is meshed with the bevel tooth two.

3. The galvanized iron sheet air duct connection structure that is easy to install according to claim 2 is characterized in that: The quick connection device includes a threaded hole, which is located in the four sides of the connecting plate. A fixing block is fixedly connected to the outer wall of the iron air duct. A bolt is threadedly connected in the fixing block. The bolt is aligned with the threaded hole, and a hand wheel is provided at the end of the bolt.

4. The galvanized iron air duct connection structure that is easy to install according to claim 3 is characterized in that: The vertical cross section of the sealing gasket is arranged in an H shape.

5. The galvanized iron sheet air duct connection structure that is easy to install according to claim 4 is characterized in that: The second bevel tooth is located at the end of the screw rod close to the strip end plate, and the first bevel tooth ensures that the meshing relationship with the second bevel tooth will not be separated from the second bevel tooth.

6. The galvanized iron sheet air duct connection structure that is easy to install according to claim 5, characterized in that: The edge of the scraper is provided with a scraping layer, and the scraping layer is made of silica gel material.

Images