A quick-installation common plate flange duct

Abstract

This utility model relates to the field of flange duct technology and discloses a quick-installation common plate flange duct, including a first duct and a second duct. The first duct has an internal cavity and an upper groove at its top, with the cavity extending into the upper groove. A connecting pin is fixedly connected to the outer side of the second duct, and a spring is fixedly connected to the top of the connecting pin. A limit block is fixedly connected to the top of the spring. Installation grooves are provided at the edges of both the first and second ducts. A first mounting plate and a second mounting plate are respectively fitted onto the outer sides of the first and second ducts. This utility model has the following advantages and effects: the first and second mounting plates can be fixed at the ports of the first and second ducts, making the connection and installation of the first and second ducts not only highly stable but also simple and convenient.

Description

Technical Field

[0001] This utility model relates to the field of flange duct technology, and in particular to a quick-installation common plate flange duct. Background Technology

[0002] Common plate flange ducts, also known as flangeless ducts, are faster, more convenient, and have a lower leakage rate than traditional rectangular ducts. Their advantages include material savings, reduced project investment, low leakage, lower energy consumption, and reduced operating costs, making them very popular with construction companies.

[0003] In the prior art, Chinese Patent Publication No. CN213236469U discloses a deformation-resistant common plate flange duct, including a common plate flange duct body and two common plate flanges fixed at both ends of the common plate flange duct body. Multiple first threaded sleeves are installed on the opposite sides of the two common plate flanges. Multiple reinforcing rings are fitted onto the outer wall of the common plate flange duct body and fixedly connected thereto. Multiple reinforcing rods are horizontally and slidably connected to the reinforcing rings. Each reinforcing rod has a positioning mechanism that abuts against the reinforcing rings. Connecting parts matching the first threaded sleeves are installed at both ends of the reinforcing rods. This utility model has a reasonable structure. Through the cooperation of the reinforcing rods and reinforcing rings, the common plate flange duct body can be effectively reinforced, making it less prone to deformation during use or transportation. At the same time, the reinforcing rods can provide buffer protection for the common plate flange duct body, making it less susceptible to impact.

[0004] However, existing common plate flange ducts are generally installed using multiple flanges, gaskets, angle plates, and bolts, which is not only inconvenient to install but also unstable after installation. Therefore, how to install common plate flange ducts conveniently and with stability after installation is an urgent problem to be solved. Utility Model Content

[0005] The purpose of this invention is to provide a quick-installation common plate flange duct that offers the advantages of convenient installation and stability after installation.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a quick-installation common plate flange duct, including a first duct and a second duct, wherein the first duct has an internal cavity and an upper groove at its top, the cavity extending into the upper groove; a connecting pin is fixedly connected to the outer side of the second duct, a spring is fixedly connected to the top of the connecting pin, and a limiting block is fixedly connected to the top of the spring; mounting grooves are provided at the edges of both the first and second ducts; a first mounting plate and a second mounting plate are respectively sleeved on the outer sides of the first and second ducts; limiting protrusions are fixedly connected to the inner sides of the first and second mounting plates, the limiting protrusions extending into the interior of the mounting grooves; a connecting plate is fixedly connected to the outer side of the first mounting plate, a handle is rotatably connected to the inner side of the connecting plate, a limiting ring is rotatably connected to the inner side of the handle; and a latch is fixedly connected to the outer side of the second mounting plate.

[0007] By adopting the above technical solution, the first and second air ducts are connected, allowing the connecting pin to extend into the cavity. The connecting pin drives the spring and the limiting block to extend and retract within the cavity. Then, the spring and the limiting block push out within the upper groove, thereby limiting the connecting pin within the cavity and fixing the first and second air ducts after connection. Next, the first and second mounting plates are fitted onto the ends of the first and second air ducts, allowing the limiting protrusion to extend into the mounting groove. Rotating the handle rotates the limiting ring, extending it into the locking buckle. Pressing the handle moves the limiting ring, locking it within the locking buckle. This fixes the first and second mounting plates at the ends of the first and second air ducts. Through these operations, the first and second air ducts not only have excellent stability during connection and installation but also have a simple and convenient installation process.

[0008] A further feature of this invention is that the number of cavities and connecting pins are both four, and the four cavities and connecting pins are distributed in a rectangular array.

[0009] By adopting the above technical solution, each connecting pin extends into the interior of each cavity, and the four connecting pins extend into the interior of the four cavities.

[0010] A further feature of this invention is that the bottom of both the first and second air ducts is fixedly connected to a track, the bottom of the track is engaged with an installation block, and the bottom of the installation block is fixedly connected to a lifting plate.

[0011] By adopting the above technical solution, the lifting plate is attached to the inside of the track by the mounting block. The lifting plate can be installed below the first air duct and the second air duct, and the lifting plate can be disassembled below the first air duct and the second air duct.

[0012] A further feature of this invention is that: both sides of the top of the hoisting plate are fixedly connected to lifting lugs, hooks are attached inside the lifting lugs, and a chain is fixedly connected to one end of each hook.

[0013] By adopting the above technical solution, the chain is fixed to the indoor ceiling, and then the hook is attached to the inside of the lifting lug, so that the chain can be connected to the lifting plate. The lifting plate, the first air duct and the second air duct are suspended by the chain, so that the first air duct and the second air duct can be suspended from the ceiling.

[0014] A further feature of this invention is that a first exhaust port is provided at one end of the second air duct, and a second exhaust port is provided on the outer side of the second air duct.

[0015] By adopting the above technical solution, the first exhaust vent extends to the outside, and the second exhaust vent is reserved indoors, so that the device can exhaust air both outdoors and indoors.

[0016] A further feature of this invention is that both the first and second exhaust vents have slots inside, and a filter screen is engaged inside the slots.

[0017] By adopting the above technical solution, the filter screen covers the inside of the first and second exhaust vents to prevent dust and flies from entering.

[0018] A further feature of this invention is that both the first and second exhaust vents are threadedly connected to a cover plate.

[0019] By adopting the above technical solution, when it is necessary to close the first or second exhaust vent, the cover plate can be installed inside the first or second exhaust vent.

[0020] A further feature of this invention is that both sides of the first and second air ducts are hinged with sealing plates, and a handle is fixedly connected to the outer side of the sealing plates.

[0021] By adopting the above technical solution, when it is necessary to thoroughly inspect the inside of the first or second exhaust vent, simply open the sealing plate.

[0022] A further feature of this invention is that the first mounting plate and the second mounting plate are symmetrical to each other.

[0023] By adopting the above technical solution, the first mounting plate and the second mounting plate wrap around the first air duct and the second air duct.

[0024] A further feature of this invention is that a sealing gasket is fixedly connected inside the first air duct, and a sealing groove is provided inside the second air duct.

[0025] By adopting the above technical solution, when the first air duct and the second air duct are joined together, the sealing gasket will extend into the interior of the sealing groove, thereby achieving a sealing effect after the first air duct and the second air duct are joined together.

[0026] The beneficial effects of this utility model are:

[0027] 1. This utility model, through the arrangement of a first air duct, a second air duct, a cavity, an upper groove, a connecting pin, a spring, a limiting block, a mounting groove, a first mounting plate, a second mounting plate, a limiting protrusion, a connecting plate, a handle, a limiting ring, and a latch, connects the first and second air ducts together. The connecting pin extends into the cavity, causing the spring and limiting block to extend and retract within the cavity. Subsequently, the spring and limiting block push out within the upper groove, thus limiting the connecting pin within the cavity, thereby fixing the first and second air ducts after connection. The first and second mounting plates are fitted onto the ports of the first and second ducts, respectively, so that the limiting protrusion extends into the interior of the mounting groove. The handle is rotated to rotate the limiting ring, so that the limiting ring extends into the interior of the latch. Then, the handle is pressed to move the limiting ring, thereby locking the limiting ring into the interior of the latch. This allows the first and second mounting plates to be fixed at the ports of the first and second ducts. Through the above operation, the first and second ducts not only have strong stability when connected and installed, but the installation process is also simple and convenient.

[0028] 2. This utility model, through the arrangement of the track, mounting block, lifting plate, lifting lug, hook and chain, the lifting plate is snapped into the inside of the track by the mounting block. The lifting plate can be installed below the first air duct and the second air duct, and the lifting plate can be removed below the first air duct and the second air duct. The chain is fixed to the indoor ceiling. Then the hook is attached to the inside of the lifting lug, so that the chain can be connected to the lifting plate. The lifting plate, the first air duct and the second air duct are suspended by the chain, so that the first air duct and the second air duct can be suspended from the ceiling. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the structure of this utility model;

[0031] Figure 2 This utility model Figure 1Enlarged structural diagram at point A;

[0032] Figure 3 This is a front view structural diagram of the first mounting plate and the second mounting plate of this utility model;

[0033] Figure 4 This is a front view structural diagram of the hoisting plate of this utility model.

[0034] In the diagram, 1. First air duct; 2. Second air duct; 3. Cavity; 4. Upper groove; 5. Connecting pin; 6. Spring; 7. Limiting block; 8. Mounting groove; 9. First mounting plate; 10. Second mounting plate; 11. Limiting protrusion; 12. Connecting plate; 13. Handle; 14. Limiting ring; 15. Lock; 16. Track; 17. Mounting block; 18. Lifting plate; 19. Lifting lug; 20. Hook; 21. Chain; 22. First exhaust vent; 23. Second exhaust vent; 24. Filter screen; 25. Sealing plate; 26. Sealing gasket. Detailed Implementation

[0035] The technical solution of this utility model will now be clearly and completely described with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0036] Reference Figure 1-4A quick-installation common flange duct includes a first duct 1 and a second duct 2. The first duct 1 has an internal cavity 3 and an upper groove 4 at its top, with the cavity 3 extending into the upper groove 4. A connecting pin 5 is fixedly connected to the outer side of the second duct 2, and a spring 6 is fixedly connected to the top of the connecting pin 5. A limit block 7 is fixedly connected to the top of the spring 6. Mounting grooves 8 are provided at the edges of both the first duct 1 and the second duct 2. A first mounting plate 9 and a second mounting plate 10 are respectively fitted onto the outer sides of the first duct 1 and the second duct 2. Limiting protrusions 11 are fixedly connected to the inner sides of the first mounting plate 9 and the second mounting plate 10, extending into the mounting groove 8. A connecting plate 12 is fixedly connected to the outer side of the first mounting plate 9. A handle 13 is rotatably connected inside the connecting plate 12, and a limit ring 14 is rotatably connected inside the handle 13. A latch 15 is fixedly connected to the outside of the second mounting plate 10. The first air duct 1 and the second air duct 2 are connected together, so that the connecting pin 5 extends into the cavity 3. The connecting pin 5 drives the spring 6 and the limit block 7 to extend and retract inside the cavity 3. Then, the spring 6 and the limit block 7 are pushed out inside the upper groove 4, thereby limiting the connecting pin 5 inside the cavity 3, so that the first air duct 1 and the second air duct 2 are fixed after connection. Then, the first mounting plate 9 and the second mounting plate 10 are sleeved on the ends of the first air duct 1 and the second air duct 2, so that the limit protrusion 11 extends into the mounting groove 8. Rotating the handle 13 rotates the limit ring 14, so that... The limiting ring 14 extends into the interior of the latch 15. Then, pressing the handle 13 causes the limiting ring 14 to move, thereby locking the limiting ring 14 inside the latch 15. This allows the first mounting plate 9 and the second mounting plate 10 to be fixed at the ports of the first duct 1 and the second duct 2. Through the above operation, the first duct 1 and the second duct 2 not only have extremely strong stability during connection and installation, but the installation process is also simple and convenient. There are four cavities 3 and four connecting pins 5, and the four cavities 3 and the four connecting pins 5 are distributed in a rectangular array. Each connecting pin 5 extends into the interior of each cavity 3, and the four connecting pins 5 extend into the interiors of the four cavities 3. Tracks are fixedly connected to the bottom of both the first duct 1 and the second duct 2. 16. A mounting block 17 is snapped into the bottom of the track 16. A hanging plate 18 is fixedly connected to the bottom of the mounting block 17. The hanging plate 18 is snapped into the interior of the track 16 via the mounting block 17. The hanging plate 18 can be installed below the first air duct 1 and the second air duct 2, and can be removed from below the first air duct 1 and the second air duct 2. Lifting lugs 19 are fixedly connected to both sides of the top of the hanging plate 18. A hook 20 is attached to the inside of the lifting lug 19. A chain 21 is fixedly connected to one end of the hook 20. The chain 21 is fixed to the ceiling of the room. Then, the hook 20 is attached to the inside of the lifting lug 19, so that the chain 21 can be connected to the hanging plate 18. The hanging plate 18, the first air duct 1, and the second air duct 2 are suspended by the chain 21.This design allows the first duct 1 and the second duct 2 to be suspended from the ceiling. One end of the second duct 2 has a first exhaust port 22, and the outer side of the second duct 2 has a second exhaust port 23. The first exhaust port 22 extends outdoors, while the second exhaust port 23 is reserved indoors. This allows the device to perform both outdoor and indoor exhaust ventilation. Both the first exhaust port 22 and the second exhaust port 23 have internal slots for holding filters 24, which cover the interior of the first and second exhaust ports 22 and 23 to prevent dust and flies from entering. Both the first and second exhaust ports 22 and 23 are threaded with cover plates. When it is necessary to close the first exhaust port 22 or the second exhaust port 23, the cover plates are installed... Access can be made to the interior of the first exhaust vent 22 or the second exhaust vent 23. Both sides of the first duct 1 and the second duct 2 are hinged with sealing plates 25. A handle is fixedly connected to the outer side of the sealing plate 25. When thorough inspection of the interior of the first exhaust vent 22 or the second exhaust vent 23 is required, simply open the sealing plate 25. The first mounting plate 9 and the second mounting plate 10 are symmetrical and enclose the first duct 1 and the second duct 2. A sealing gasket 26 is fixedly connected inside the first duct 1, and a sealing groove is formed inside the second duct 2. When the first duct 1 and the second duct 2 are aligned, the sealing gasket will extend into the sealing groove, thus achieving a sealing effect after the first duct 1 and the second duct 2 are aligned.

[0037] In this invention, the first air duct 1 and the second air duct 2 are connected, so that the connecting pin 5 extends into the cavity 3. The connecting pin 5 drives the spring 6 and the limiting block 7 to extend and retract within the cavity 3. Then, the spring 6 and the limiting block 7 push out within the upper groove 4, thereby limiting the connecting pin 5 within the cavity 3, thus fixing the first air duct 1 and the second air duct 2 after connection. Then, the first mounting plate 9 and the second mounting plate 10 are sleeved on the ends of the first air duct 1 and the second air duct 2, so that the limiting protrusion 11 extends into the mounting groove 8. The handle 13 is rotated to rotate the limiting ring 14, so that the limiting ring 14 extends into the locking buckle 15. Then, the handle 13 is pressed, so that the handle 13 drives the limiting ring 14 to move, thereby locking the limiting ring 14 into the locking buckle 15. The first mounting plate 9 and the second mounting plate 10 can be fixed at the ports of the first air duct 1 and the second air duct 2. Through the above operations, the first air duct 1 and the second air duct 2 not only have strong stability when connected and installed, but also have a simple and convenient installation process. The hanging plate 18 is snapped into the inside of the track 16 by the mounting block 17. The hanging plate 18 can be installed below the first air duct 1 and the second air duct 2, and the hanging plate 18 can be removed from below the first air duct 1 and the second air duct 2. The chain 21 is fixed to the ceiling in the room. Then the hook 20 is attached to the inside of the lifting lug 19, so that the chain 21 can be connected to the hanging plate 18. The hanging plate 18, the first air duct 1 and the second air duct 2 are suspended by the chain 21, so that the first air duct 1 and the second air duct 2 can be suspended from the ceiling.

[0038] 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 quick-installation common flange duct, comprising a first duct (1) and a second duct (2), characterized in that: The first air duct (1) has an internal cavity (3) and an upper groove (4) at its top. The cavity (3) extends into the upper groove (4). A connecting pin (5) is fixedly connected to the outside of the second air duct (2). A spring (6) is fixedly connected to the top of the connecting pin (5). A limit block (7) is fixedly connected to the top of the spring (6). Mounting grooves (8) are provided at the edges of both the first air duct (1) and the second air duct (2). The exteriors of the first air duct (1) and the second air duct (2) are respectively... A first mounting plate (9) and a second mounting plate (10) are fitted together. Limiting protrusions (11) are fixedly connected to the inner sides of the first mounting plate (9) and the second mounting plate (10), respectively. The limiting protrusions (11) extend into the interior of the mounting groove (8). A connecting plate (12) is fixedly connected to the outside of the first mounting plate (9). A handle (13) is rotatably connected to the inside of the connecting plate (12). A limiting ring (14) is rotatably connected to the inside of the handle (13). A latch (15) is fixedly connected to the outside of the second mounting plate (10).

2. The quick-installation common flange duct according to claim 1, characterized in that: The number of cavities (3) and connecting pins (5) are four, and the four cavities (3) and connecting pins (5) are distributed in a rectangular array.

3. The quick-installation common flange duct according to claim 1, characterized in that: The bottom of the first air duct (1) and the second air duct (2) are both fixedly connected to a track (16), and the bottom of the track (16) is snapped with an installation block (17), and the bottom of the installation block (17) is fixedly connected to a lifting plate (18).

4. The quick-installation common flange duct according to claim 3, characterized in that: Lifting lugs (19) are fixedly connected to both sides of the top of the lifting plate (18). Hooks (20) are attached inside the lifting lugs (19), and a chain (21) is fixedly connected to one end of the hooks (20).

5. A quick-installation common flange duct according to claim 4, characterized in that: The second air duct (2) has a first air outlet (22) at one end and a second air outlet (23) at the outside of the second air duct (2).

6. The quick-installation common flange duct according to claim 5, characterized in that: Both the first exhaust vent (22) and the second exhaust vent (23) have slots inside, and a filter screen (24) is engaged inside the slots.

7. A quick-installation common flange duct according to claim 5, characterized in that: Both the first exhaust vent (22) and the second exhaust vent (23) have threaded covers inside.

8. The quick-installation common flange duct according to claim 1, characterized in that: Both sides of the first air duct (1) and the second air duct (2) are hinged with sealing plates (25), and a handle is fixedly connected to the outside of the sealing plate (25).

9. A quick-installation common flange duct according to claim 1, characterized in that: The first mounting plate (9) and the second mounting plate (10) are symmetrical to each other.

10. A quick-installation common flange duct according to claim 1, characterized in that: The first air duct (1) is fixedly connected with a sealing gasket (26), and the second air duct (2) has a sealing groove inside.

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