Corrosion-resistant ventilating duct

Abstract

The utility model relates to the technical field of fire fighting equipment, and discloses a corrosion-resistant ventilating duct which comprises an L-shaped pipe, a flange is fixedly installed at the end of the L-shaped pipe, a sealing gasket is fixedly connected in the flange, a ventilating duct body is movably installed in the flange, and a lifting lug is fixedly connected to the top of the ventilating duct body. A hook is arranged in the lifting lug, the hook is hung in the lifting lug, an anti-releasing buckle is rotationally connected to the interior of the hook, a spring is fixedly connected to the side face of the anti-releasing buckle and the side face of the hook, a mounting plate is fixedly connected to the top of the hook, and bolts are in threaded connection to the two sides of the interior of the mounting plate. Compared with the prior art, the mounting structure has the following advantages and effects that the bolt is in threaded connection with the interior of the mounting plate, so that the bolt extends to the indoor ceiling, the ventilation pipeline can be hung on the indoor ceiling, the connection stability is high, and the ventilation pipeline is convenient to mount.

Description

Technical Field

[0001] This utility model relates to the field of fire protection equipment technology, and in particular to a corrosion-resistant ventilation duct. Background Technology

[0002] Ventilation ducts are metal or composite pipes used in ventilation and air conditioning projects in industrial and civil buildings. They are a type of municipal infrastructure designed to circulate air and reduce the concentration of harmful gases. The sheet metal, profiles, and other main finished materials used in the fabrication and installation of ventilation ducts should comply with the provisions of the current national standards for design and related products, and should be accompanied by a certificate of conformity from the manufacturer.

[0003] To extend the service life of ventilation ducts, a protective layer or moisture-proof pad needs to be installed on the inner wall of the ventilation ducts to prevent corrosion.

[0004] In the prior art, Chinese Patent Publication No. CN217301929U discloses a corrosion-resistant ventilation duct, including a ventilation pipe, an inner pipe movably connected inside the ventilation pipe, a sealing ring movably connected to the surface of the inner pipe, a fixing ring fixedly connected to the top of the ventilation pipe, grooves on both sides of the top surface of the fixing ring, a corrosion-resistant layer bonded to the inner wall of the inner pipe with an adhesive, and a clamping mechanism provided on the surface of the inner pipe; the clamping mechanism includes a fixing block, a limiting block fixedly connected to the bottom of the inner wall of the groove, and a limiting groove adapted to the limiting block at the bottom of the fixing block. This utility model relates to the field of ventilation duct technology. This corrosion-resistant ventilation duct, by adding a corrosion-resistant layer inside the inner pipe and the detachable design of the inner pipe, avoids the problem of needing to replace the entire ventilation duct due to corrosion, thus avoiding increased economic costs. It is also easy to disassemble and assemble, reducing the workload of personnel and meeting practical usage needs.

[0005] However, existing corrosion-resistant ventilation ducts have poor corrosion resistance and are inconvenient to disassemble and install. In addition, existing corrosion-resistant ventilation ducts have low exhaust efficiency. Therefore, the above problems need to be improved. Utility Model Content

[0006] The purpose of this invention is to provide a corrosion-resistant ventilation duct that is easy to disassemble and install, and has high exhaust efficiency.

[0007] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a corrosion-resistant ventilation duct, comprising an L-shaped pipe, a flange fixedly installed at the end of the L-shaped pipe, a sealing gasket fixedly connected inside the flange, a ventilation duct movably installed inside the flange, a lifting lug fixedly connected to the top of the ventilation duct, a hook provided inside the lifting lug, the hook being attached to the inside of the lifting lug, an anti-disengagement buckle rotatably connected inside the hook, a spring fixedly connected to the side of the hook, a mounting plate fixedly connected to the top of the hook, bolts threadedly connected to both sides inside the mounting plate, an expansion gasket sleeved in the middle of the bolts, an anti-corrosion layer fixedly connected to the outside of the ventilation duct, and a drying layer provided inside the anti-corrosion layer.

[0008] By adopting the above technical solution, two ventilation ducts are installed to the end of the L-tube via flanges. The gap between the ventilation duct and the L-tube is sealed with a gasket. Then, hooks are attached to the inside of the lifting lugs, allowing the mounting plate to be installed above the ventilation ducts. A spring drives the anti-disengagement buckle to rebound, allowing the anti-disengagement buckle to close the opening of the hook, preventing the lifting lug from falling off inside the hook. Bolts are threaded into the inside of the mounting plate, extending to the ceiling, thus allowing the ventilation ducts to be suspended from the ceiling. This not only provides strong connection stability but also facilitates the installation of the ventilation ducts. The anti-corrosion layer wraps around the ventilation ducts to prevent corrosion, and a drying layer is placed in the gap between the anti-corrosion layer and the ventilation ducts to prevent moisture from eroding the ventilation ducts, improving the corrosion resistance of the ventilation ducts.

[0009] A further feature of this invention is that an outer cylinder is fixedly connected to the outside of the ventilation duct, and a motor is fixedly installed on the outside of the outer cylinder.

[0010] By adopting the above technical solution, the outer cylinder is welded to the outer wall of the ventilation duct, and the motor is fixed to the ventilation duct through the outer cylinder.

[0011] A further feature of this invention is that a drive shaft is fixedly connected to the output end of the motor, and a guide plate is fixedly connected to the outside of the drive shaft.

[0012] By adopting the above technical solution, the motor is started, which drives the guide plate to rotate through the drive shaft. The guide plate rotates inside the ventilation duct, which accelerates the exhaust of the air inside the ventilation duct and improves the exhaust efficiency.

[0013] A further feature of this invention is that the number of the guide plates is six, and the six guide plates are distributed in a ring array.

[0014] By adopting the above technical solution, six guide vanes are distributed on the outside of the drive shaft, and the motor drives the six guide vanes to rotate.

[0015] A further feature of this invention is that a locking block is fixedly connected to the inner wall of the ventilation duct, and a mesh plate is fixedly connected to the inner side of the locking block, with mesh holes opened inside the mesh plate.

[0016] By adopting the above technical solution, the ventilation duct filters impurities in the air through the mesh inside the mesh plate when exhausting air.

[0017] A further feature of this invention is that the number of mesh plates is two, and an activated carbon mesh is fixedly connected to the inner side of the two mesh plates, with activated carbon disposed inside the activated carbon mesh.

[0018] By adopting the above technical solution, the activated carbon inside the activated carbon mesh adsorbs the substances attached to the wind.

[0019] A further feature of this invention is that an exhaust port is provided at the end of the ventilation duct, and a first grille is fixedly connected inside the exhaust port.

[0020] By adopting the above technical solution, the first grille covers the exhaust vent, and the air is discharged through the exhaust vent.

[0021] A further feature of this invention is that an extension channel is fixedly connected to the bottom of the ventilation duct, and a second grille is provided at the end of the extension channel.

[0022] By adopting the above technical solution, the extension channel is set at the bottom of the ventilation duct, and the air can be discharged through the extension channel, thereby enabling the air to be discharged through the dual outlets.

[0023] A further feature of this invention is that a rotating shaft is rotatably connected inside the extension channel, a closing plate is fixedly connected to the end of the rotating shaft, and a limit block is fixedly connected to the inner wall of the extension channel.

[0024] By adopting the above technical solution, the rotating shaft drives the closing plate to rotate inside the extension channel, and the closing plate closes inside the extension channel, thereby sealing the extension channel.

[0025] A further feature of this invention is that the rotating shaft extends through the outside of the extension channel, and a handle is fixedly connected to one end of the rotating shaft.

[0026] By adopting the above technical solution, it is relatively convenient to rotate the handle shaft.

[0027] The beneficial effects of this utility model are:

[0028] 1. This utility model, through the arrangement of an L-tube, flange, sealing gasket, ventilation duct, lifting lug, hook, anti-disengagement buckle, mounting plate, bolt, expansion gasket, anti-corrosion layer, and drying layer, allows two ventilation ducts to be installed to the end of the L-tube via a flange. The gap between the ventilation duct and the L-tube is sealed by a sealing gasket. Then, the hook is attached to the inside of the lifting lug, allowing the mounting plate to be installed above the ventilation duct. A spring drives the anti-disengagement buckle to rebound, allowing the anti-disengagement buckle to close the opening of the hook, preventing the lifting lug from falling off inside the hook. The bolt is threaded into the inside of the mounting plate, allowing the bolt to extend to the indoor ceiling, thus enabling the ventilation duct to be suspended from the indoor ceiling. This not only provides strong connection stability but also facilitates the installation of the ventilation duct. The anti-corrosion layer wraps around the ventilation duct to prevent corrosion. The drying layer is placed in the gap between the anti-corrosion layer and the ventilation duct to prevent moisture from eroding the ventilation duct and improve the corrosion resistance of the ventilation duct.

[0029] 2. This utility model, through the arrangement of a motor, drive shaft, guide plate, clamping block, mesh plate, activated carbon mesh, exhaust port, first grille and extension channel, allows the motor to drive the guide plate to rotate via the drive shaft. The guide plate rotates inside the ventilation duct, enabling the air inside the ventilation duct to be discharged more quickly, thus improving the exhaust efficiency. When the ventilation duct is ventilating, impurities in the air are filtered through the mesh holes inside the mesh plate, and adsorbed by the activated carbon inside the activated carbon mesh. The extension channel is located at the bottom of the ventilation duct, allowing air to be discharged through the extension channel, thus enabling the air to be discharged through dual outlets. Attached Figure Description

[0030] 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.

[0031] Figure 1 This is a schematic diagram of the exploded structure of this utility model;

[0032] Figure 2 This utility model Figure 1 Enlarged structural diagram at point A;

[0033] Figure 3 This is a schematic diagram of the structure of the anti-corrosion layer and the drying layer of this utility model;

[0034] Figure 4 This is a schematic diagram of the internal structure of the ventilation duct of this utility model;

[0035] Figure 5This is a schematic diagram of the internal structure of the extension channel of this utility model.

[0036] In the diagram, 1. L-shaped pipe; 2. Flange; 3. Sealing gasket; 4. Ventilation duct; 5. Lifting lug; 6. Hook; 7. Anti-disengagement clip; 8. Mounting plate; 9. Bolt; 10. Expansion pad; 11. Anti-corrosion layer; 12. Drying layer; 13. Outer cylinder; 14. Motor; 15. Drive shaft; 16. Guide plate; 17. Locking block; 18. Mesh plate; 19. Activated carbon mesh; 20. Exhaust vent; 21. First grille; 22. Extension channel; 23. Rotating shaft; 24. Closing plate; 25. Limiting block; 26. Handle. Detailed Implementation

[0037] 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.

[0038] Reference Figure 1-5A corrosion-resistant ventilation duct includes an L-shaped pipe 1. A flange 2 is fixedly installed at the end of the L-shaped pipe 1. A sealing gasket 3 is fixedly connected inside the flange 2. A ventilation duct 4 is movably installed inside the flange 2. A lifting lug 5 is fixedly connected to the top of the ventilation duct 4. A hook 6 is provided inside the lifting lug 5 and is attached to the inside of the lifting lug 5. An anti-disengagement buckle 7 is rotatably connected inside the hook 6. A spring is fixedly connected to the side of the anti-disengagement buckle 7 and the side of the hook 6. A mounting plate 8 is fixedly connected to the top of the hook 6. Bolts 9 are threadedly connected to both sides inside the mounting plate 8. An expansion gasket 10 is sleeved in the middle of the bolts 9. An anti-corrosion layer 11 is fixedly connected to the outside of the ventilation duct 4. A drying layer 12 is provided on the inner side of the anti-corrosion layer 11. Two ventilation ducts 4 are installed to the L-shaped pipe 1 through the flange 2. At the end of the ventilation duct 4, the gap between the ventilation duct 4 and the L-pipe 1 is sealed by a sealing gasket 3. Then, the hook 6 is attached to the inside of the lifting lug 5, so that the mounting plate 8 is installed above the ventilation duct 4. The spring drives the anti-disengagement buckle 7 to rebound, so that the anti-disengagement buckle can close the opening of the hook 6, preventing the lifting lug 5 from falling off inside the hook 6. The bolt 9 is threaded into the inside of the mounting plate 8, so that the bolt 9 extends to the ceiling of the room, thereby allowing the ventilation duct 4 to be suspended from the ceiling of the room. This not only provides strong connection stability but also facilitates the installation of the ventilation duct 4. The anti-corrosion layer 11 wraps the ventilation duct 4 to prevent it from being corroded. The drying layer 12 is placed in the gap between the anti-corrosion layer 11 and the ventilation duct 4 to prevent moisture erosion. Ventilation duct 4 is designed to enhance corrosion resistance. An outer cylinder 13 is fixedly connected to the outside of the ventilation duct 4, and a motor 14 is fixedly mounted on the outside of the outer cylinder 13. The outer cylinder 13 is welded to the outer wall of the ventilation duct 4. The motor 14 is fixed to the ventilation duct 4 via the outer cylinder 13. A drive shaft 15 is fixedly connected to the output end of the motor 14, and a guide plate 16 is fixedly connected to the outside of the drive shaft 15. Starting the motor 14 causes the motor to drive the guide plate 16 to rotate via the drive shaft 15. The guide plate 16 rotates inside the ventilation duct 4, accelerating the exhaust of air and improving ventilation efficiency. There are six guide plates 16 arranged in a circular array. Outside the drive shaft 15, the motor 14 drives six guide plates 16 to rotate. A clamping block 17 is fixedly connected to the inner wall of the ventilation duct 4, and a mesh plate 18 is fixedly connected to the inner side of the clamping block 17. The mesh plate 18 has mesh holes inside. When the ventilation duct 4 exhausts air, impurities in the air are filtered through the mesh holes inside the mesh plate 18. There are two mesh plates 18, and activated carbon mesh 19 is fixedly connected to the inner side of both mesh plates 18. Activated carbon is placed inside the activated carbon mesh 19, which adsorbs substances attached to the air. An exhaust port 20 is opened at the end of the ventilation duct 4, and a first grille 21 is fixedly connected inside the exhaust port 20. The first grille 21 covers the exhaust port 20, and air is discharged through the exhaust port 20.An extension channel 22 is fixedly connected to the bottom of the ventilation duct 4. A second grille is provided at the end of the extension channel 22. The extension channel 22 is located at the bottom of the ventilation duct 4, allowing air to be discharged through the extension channel 22, thus enabling air to be discharged through dual outlets. A rotating shaft 23 is rotatably connected inside the extension channel 22, and a closing plate 24 is fixedly connected to the end of the rotating shaft 23. A limit block 25 is fixedly connected to the inner wall of the extension channel 22. The rotating shaft 23 drives the closing plate 24 to rotate inside the extension channel 22, closing the extension channel 22 and sealing it. The rotating shaft 23 extends to the outside of the extension channel 22, and a handle 26 is fixedly connected to one end of the rotating shaft 23. Rotating the rotating shaft 23 by holding the handle 26 is convenient.

[0039] In this invention, two ventilation ducts 4 are installed to the end of L-pipe 1 via flange 2. The gap between the ventilation duct 4 and L-pipe 1 is sealed by sealing gasket 3. Then, hook 6 is attached to the inside of lifting lug 5, so that mounting plate 8 is installed above ventilation duct 4. Spring drives anti-disengagement buckle 7 to rebound, so that the anti-disengagement buckle can close the opening of hook 6, preventing lifting lug 5 from falling off inside hook 6. Bolt 9 is threaded into the inside of mounting plate 8, so that bolt 9 extends to the indoor ceiling, thereby allowing ventilation duct 4 to be suspended from the indoor ceiling. This not only provides strong connection stability but also facilitates the installation of ventilation duct 4. Anti-corrosion layer 11 wraps the ventilation duct 4 to prevent corrosion. The ventilation duct 4 is corroded. The drying layer 12 is set in the gap between the anti-corrosion layer 11 and the ventilation duct 4 to prevent moisture from corroding the ventilation duct 4 and improve the corrosion resistance of the ventilation duct 4. The motor 14 drives the guide plate 16 to rotate through the drive shaft 15. The guide plate 16 rotates inside the ventilation duct 4, so that the air inside the ventilation duct 4 can be discharged faster and improve the exhaust efficiency. When the ventilation duct 4 is exhausting air, the impurities in the air are filtered through the mesh of the mesh plate 18, and the adsorbents in the air are adsorbed through the activated carbon inside the activated carbon mesh 19. The extension channel 22 is set at the bottom of the ventilation duct 4, and the air can be discharged through the extension channel 22, so that the air can be discharged through the dual outlets.

[0040] 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 corrosion-resistant ventilation duct, comprising an L-shaped pipe (1), characterized in that: A flange (2) is fixedly installed at the end of the L-tube (1). A sealing gasket (3) is fixedly connected inside the flange (2). A ventilation duct (4) is movably installed inside the flange (2). A lifting lug (5) is fixedly connected to the top of the ventilation duct (4). A hook (6) is provided inside the lifting lug (5). The hook (6) is attached to the inside of the lifting lug (5). An anti-disengagement buckle (7) is rotatably connected inside the hook (6). A spring is fixedly connected to the side of the anti-disengagement buckle (7) and the hook (6). An installation plate (8) is fixedly connected to the top of the hook (6). Bolts (9) are threaded on both sides inside the installation plate (8). An expansion gasket (10) is sleeved in the middle of the bolt (9). An anti-corrosion layer (11) is fixedly connected to the outside of the ventilation duct (4). A drying layer (12) is provided on the inside of the anti-corrosion layer (11).

2. The corrosion-resistant ventilation duct according to claim 1, characterized in that: The ventilation duct (4) is fixedly connected to an outer cylinder (13), and a motor (14) is fixedly installed on the outside of the outer cylinder (13).

3. The corrosion-resistant ventilation duct according to claim 2, characterized in that: The output end of the motor (14) is fixedly connected to a drive shaft (15), and a guide plate (16) is fixedly connected to the outside of the drive shaft (15).

4. The corrosion-resistant ventilation duct according to claim 3, characterized in that: The number of the guide plates (16) is six, and the six guide plates (16) are distributed in a ring array.

5. A corrosion-resistant ventilation duct according to claim 1, characterized in that: The ventilation duct (4) is fixedly connected to a locking block (17), and a mesh plate (18) is fixedly connected to the inner side of the locking block (17). The mesh plate (18) has mesh holes inside.

6. A corrosion-resistant ventilation duct according to claim 5, characterized in that: There are two mesh plates (18), and an activated carbon mesh (19) is fixedly connected to the inner side of the two mesh plates (18), and activated carbon is disposed inside the activated carbon mesh (19).

7. A corrosion-resistant ventilation duct according to claim 1, characterized in that: The ventilation duct (4) has an exhaust port (20) at its end, and a first grille (21) is fixedly connected inside the exhaust port (20).

8. A corrosion-resistant ventilation duct according to claim 3, characterized in that: The bottom of the ventilation duct (4) is fixedly connected to an extension channel (22), and a second grille is provided at the end of the extension channel (22).

9. A corrosion-resistant ventilation duct according to claim 8, characterized in that: The extension channel (22) is rotatably connected to a rotating shaft (23), and a closing plate (24) is fixedly connected to the end of the rotating shaft (23). A limit block (25) is fixedly connected to the inner wall of the extension channel (22).

10. A corrosion-resistant ventilation duct according to claim 9, characterized in that: The rotating shaft (23) extends through the outside of the extension channel (22), and a handle (26) is fixedly connected to one end of the rotating shaft (23).

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