Spiral air pipe

Abstract

The utility model discloses a spiral air pipe which comprises a first air pipe and a second air pipe, the second air pipe is located above the first air pipe, one end of the first air pipe is connected with a first connecting disc, one end of the second air pipe is connected with a second connecting disc, and a plurality of through holes are formed in an inner cavity of the first connecting disc and an inner cavity of the second connecting disc in a penetrating mode. A screw is movably arranged in an inner cavity of the through hole, and the outer ring of the screw is in threaded connection with a nut. A fixing pipe is arranged in an inner cavity of the through hole formed in the second connecting disc, a containing groove is formed in the top of the fixing pipe, a tray is movably arranged in an inner cavity of the containing groove, and a clamping groove is formed in the top of the tray. And through cooperative use of the tray and the clamping groove, the situation that the air pipe generates noise due to looseness of the nut can be avoided, and therefore the practicability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of air ducts, in particular to a spiral air duct. Background Art

[0002] Spiral duct is a kind of air duct. It is a thin-walled tube with spiral bite seams rolled into a metal strip. It is mostly used for air supply and bulk material transportation, replacing the traditional galvanized iron pipe.

[0003] After searching, in the prior art, a utility model with announcement number CN216447567U discloses a new type of insulated spiral duct for ship, including a support mechanism, the outer wall of the support mechanism is fixedly connected with a mounting mechanism; the mounting mechanism includes a fixed body, the interior of the fixed body is movably connected with a first rotating column, the outer wall of the first rotating column is movably connected with a first fixed block, the outer wall of the first fixed block is fixedly connected with a first stopper, the interior of the fixed body is movably connected with a second rotating column, the outer wall of the second rotating column is movably connected with a second fixed block, the outer wall of the second fixed block is fixedly connected with a second stopper, the interiors of the first fixed block and the second fixed block are both provided with a fixing groove, the inner walls of the first fixed block and the second fixed block are both provided with a through groove, the support mechanism includes a first outer tube, the inner wall of the first outer tube is fixedly connected with a first pillar. The new type of insulated spiral duct for ship has the advantages of convenient insulation and quick installation.

[0004] And the prior art, a leakage-proof spiral air duct with announcement number CN213236464U.

[0005] The above-mentioned technical solutions make the use of spiral air ducts better through different methods, but the above-mentioned methods still have the disadvantage of being inconvenient to reduce the noise of the air duct. When the air duct is in use, it will generate certain noise, and the noise is mostly caused by the loosening of the screws at the pipe connection, which leads to resonance between the structures. The above-mentioned methods have poor anti-loosening effect on the bolts, which affects the practicability of the device. Utility Model Content

[0006] The purpose of the utility model is to provide a spiral air duct to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solution: comprising a first air duct and a second air duct, the second air duct is located above the first air duct, one end of the first air duct is connected to a first connecting plate, one end of the second air duct is connected to a second connecting plate, the inner cavities of the first connecting plate and the second connecting plate are penetrated by a plurality of through holes, the inner cavities of the through holes are movably provided with a screw, and the outer ring of the screw is threadedly connected with a nut; the inner cavity of the through hole opened by the second connecting plate is provided with a fixing tube, the top of the fixing tube is provided with a receiving groove, the inner cavity of the receiving groove is movably provided with a tray, and the top of the tray is provided with a card slot.

[0008] Preferably, the nut is movably connected to the slot, and a plurality of return springs are connected to the bottom of the tray.

[0009] Preferably, a limiting groove is provided at the bottom of the card slot, a limiting rod is movably provided in the inner cavity of the limiting groove, and one end of the limiting rod is fixedly connected to the bottom of the tray.

[0010] Preferably, a first limiting ring is provided at one end of the receiving groove, and a second limiting ring is provided on the outer ring sleeve of the tray.

[0011] Preferably, the bottom end of the limiting rod is connected to a pull rope, one end of the pull rope is connected to a ring, a plurality of positioning columns are distributed at the bottom of the second connecting disk, and the ring is movably sleeved on the outer ring of the positioning column.

[0012] Preferably, the outer circles of the first air duct and the second air duct are wrapped with sound insulation cotton, the outer circle of the sound insulation cotton is provided with an arc-shaped clamping ring, the end of the arc-shaped clamping ring is connected to a connecting block, and the inner cavity of the connecting block is movably provided with bolts.

[0013] Preferably, a sealing ring is provided at the top of the first connecting disk, a sealing sleeve is provided at the bottom of the second connecting disk, a sealing groove is provided at the bottom of the sealing sleeve, and the sealing groove is movably connected to the sealing ring.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The spiral air duct can avoid the occurrence of noise in the air duct due to loose nuts through the coordinated use of the tray and the slot, thereby improving the practicality of the device.

[0016] 2. The spiral air duct, through the use of sound insulation cotton, can reduce the noise generated by the air flow in the air duct when passing through the joint gap to a certain extent, so as to further enhance the noise reduction effect of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is the cross-sectional structure of the utility model;

[0019] Figure 3 For this utility model Figure 2 A magnified schematic diagram of the structure at B in the middle;

[0020] Figure 4 This is a schematic diagram of the structure of the tray of the utility model;

[0021] Figure 5 This is a schematic diagram of the sealing ring structure of the utility model;

[0022] Figure 6 This is a schematic diagram of the sealing sleeve structure of the utility model.

[0023] In the figure: 1. first air duct; 2. second air duct; 3. arc-shaped clamping ring; 4. connecting block; 5. bolt; 6. sound insulation cotton; 7. sealing sleeve; 8. sealing ring; 9. through hole; 10. screw rod; 11. nut; 12. fixing tube; 13. first limiting ring; 14. tray; 15. limiting rod; 16. pull rope; 17. collar; 18. positioning column; 19. clamping groove; 20. second limiting ring; 21. reset spring; 22. limiting groove; 23. first connecting plate; 24. second connecting plate; 25. sealing groove; 26. storage groove. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Example: See Figure 1-6 The utility model provides a technical solution for a spiral air duct: it includes a first air duct 1 and a second air duct 2, the second air duct 2 is located above the first air duct 1, one end of the first air duct 1 is connected to a first connecting plate 23, one end of the second air duct 2 is connected to a second connecting plate 24, the inner cavities of the first connecting plate 23 and the second connecting plate 24 are penetrated with a plurality of through holes 9, the inner cavities of the through holes 9 are movably provided with a screw 10, and the outer ring of the screw 10 is threadedly connected with a nut 11; the inner cavity of the through hole 9 opened by the second connecting plate 24 is provided with a fixing tube 12, the top of the fixing tube 12 is provided with a receiving groove 26, the inner cavity of the receiving groove 26 is movably provided with a tray 14, and the top of the tray 14 is provided with a card slot 19.

[0026] The nut 11 is movably connected to the slot 19 , and a plurality of return springs 21 are connected to the bottom of the tray 14 .

[0027] In this embodiment, when the air ducts need to be connected, first align the ends of the first air duct 1 and the second air duct 2 until the through hole 9 jointly opened by the first connection plate 23 and the second connection plate 24 is horizontal, insert the screw 10 through the through hole 9, and connect the nut 11 to the outer ring of the screw 10 by threading, and the air duct connection work can be completed at this time;

[0028] When the nut 11 is engaged with the slot 19 , the position of the nut 11 will be restricted by the tray 14 to prevent the nut 11 from rotating, thereby preventing the air duct from making noise due to the loosening of the nut 11 , thereby improving the practicability of the device.

[0029] A limiting groove 22 is provided at the bottom of the card slot 19 , and a limiting rod 15 is movably provided in the inner cavity of the limiting groove 22 , and one end of the limiting rod 15 is fixedly connected to the bottom of the tray 14 .

[0030] In this embodiment, Figure 4 As shown, two limiting rods 15 are connected to the bottom of the tray 14 for limiting the tray 14 to prevent the tray 14 from rotating, thereby improving the stability of the device.

[0031] A first limiting ring 13 is disposed at one end of the receiving groove 26 , and a second limiting ring 20 is disposed on the outer ring of the tray 14 .

[0032] The bottom end of the limiting rod 15 is connected with a pull rope 16 , one end of the pull rope 16 is connected with a collar 17 , a plurality of positioning posts 18 are distributed at the bottom of the second connecting plate 24 , and the collar 17 is movably sleeved on the outer ring of the positioning posts 18 .

[0033] In this embodiment, after the limit rod 15 is pulled down by the pull rope 16, the tray 14 will be pulled back into the storage groove 26. At this time, the ring 17 connected to the end of the pull rope 16 is sleeved on the outer ring of the positioning column 18. At this time, the position of the tray 14 is fixed in the inner cavity of the storage groove 26 to prevent the tray 14 from limiting the downward movement of the nut 11. When the nut 11 enters the through hole 9, the outer ring of the positioning column 18 is removed by the ring 17. At this time, the reset spring 21 loses pressure and rebounds the tray 14 until the nut 11 is clamped in the clamping groove 19; the first limit ring 13 and the second limit ring 20 play a limiting role to prevent the tray 14 from being disconnected from the storage groove 26.

[0034] The outer circles of the first air duct 1 and the second air duct 2 are wrapped with sound insulation cotton 6, the outer circle of the sound insulation cotton 6 is provided with an arc-shaped clamping ring 3, the end of the arc-shaped clamping ring 3 is connected to a connecting block 4, and the inner cavity of the connecting block 4 is movably provided with bolts 5.

[0035] In this embodiment, the sound insulation cotton 6 is wrapped around the connection between the first air duct 1 and the second air duct 2, which can reduce to a certain extent the noise generated by the cyclone caused by the collision of the air flow in the air duct when passing through the docking gap, thereby causing the vibration of the air duct, so as to further improve the noise reduction effect of the device; the arc-shaped clamping ring 3 is located at the end of the sound insulation cotton 6. After the sound insulation cotton 6 is wrapped, the connection between the two arc-shaped clamping rings 3 can be locked by the bolt 5, so as to prevent the sound insulation cotton 6 from falling off, so as to further improve the stability of the device.

[0036] A sealing ring 8 is disposed on the top of the first connection disk 23 , a sealing sleeve 7 is disposed on the bottom of the second connection disk 24 , a sealing groove 25 is formed at the bottom of the sealing sleeve 7 , and the sealing groove 25 is movably connected to the sealing ring 8 .

[0037] In this embodiment, when the first air duct 1 and the second air duct 2 are connected, the sealing ring 8 is clamped in the sealing groove 25 to seal the gap between the first connecting plate 23 and the second connecting plate 24, so as to improve the sealing performance of the device and avoid the occurrence of noise due to seepage of airflow through the connecting gap.

[0038] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A spiral air duct, comprising a first air duct (1) and a second air duct (2), characterized in that: The second air duct (2) is located above the first air duct (1); one end of the first air duct (1) is connected to a first connecting plate (23); one end of the second air duct (2) is connected to a second connecting plate (24); the inner cavities of the first connecting plate (23) and the second connecting plate (24) are both penetrated by a plurality of through holes (9); a screw (10) is movably provided in the inner cavity of the through hole (9); a nut (11) is threadedly connected to the outer ring of the screw (10); a fixing tube (12) is provided in the inner cavity of the through hole (9) provided in the second connecting plate (24); a receiving groove (26) is provided at the top of the fixing tube (12); a tray (14) is movably provided in the inner cavity of the receiving groove (26); a card slot (19) is provided at the top of the tray (14).

2. The spiral air duct according to claim 1, characterized in that: The nut (11) is movably connected to the clamping slot (19), and a plurality of return springs (21) are connected to the bottom of the tray (14).

3. The spiral air duct according to claim 1, characterized in that: A limiting groove (22) is provided at the bottom of the clamping groove (19), a limiting rod (15) is movably provided in the inner cavity of the limiting groove (22), and one end of the limiting rod (15) is fixedly connected to the bottom of the tray (14).

4. The spiral air duct according to claim 1, characterized in that: A first limiting ring (13) is provided at one end of the receiving groove (26), and a second limiting ring (20) is provided on the outer ring sleeve of the tray (14).

5. The spiral air duct according to claim 3, characterized in that: The bottom end of the limiting rod (15) is connected to a pull rope (16), one end of the pull rope (16) is connected to a ring (17), and a plurality of positioning columns (18) are distributed at the bottom of the second connecting plate (24), and the ring (17) is movably sleeved on the outer ring of the positioning column (18).

6. The spiral air duct according to claim 1, characterized in that: The outer rings of the first air duct (1) and the second air duct (2) are wrapped with sound insulation cotton (6), the outer ring of the sound insulation cotton (6) is provided with an arc-shaped clamping ring (3), the end of the arc-shaped clamping ring (3) is connected to a connecting block (4), and the inner cavity of the connecting block (4) is movably provided with a bolt (5).

7. The spiral air duct according to claim 1, characterized in that: A sealing ring (8) is arranged at the top of the first connecting plate (23), a sealing sleeve (7) is arranged at the bottom of the second connecting plate (24), a sealing groove (25) is provided at the bottom of the sealing sleeve (7), and the sealing groove (25) is movably connected to the sealing ring (8).

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