Silencing air pipe structure

Abstract

The utility model discloses a noise reduction air pipe structure which comprises an air pipe body, an operation block is arranged in the air pipe body, noise reduction materials are fixedly installed on the inner walls of the periphery of the air pipe body, an installation hole is formed in the top of the operation block, and two installation blocks are fixedly installed on the inner wall of one side of the installation hole. And four lead screw guide sleeves are rotationally mounted on the two sides of the top and the two sides of the bottom of the mounting hole correspondingly, through holes are formed in the two mounting blocks correspondingly, sliding rods are movably mounted in the two through holes correspondingly, connecting blocks are fixedly mounted at the ends, close to each other, of the two sliding rods correspondingly, and connecting plates are fixedly mounted at the ends, away from each other, of the two sliding rods correspondingly. The silencing air pipe structure is simple in structure and convenient to use, noise reduction treatment can be carried out on the air pipe through the silencing materials inside the silencing air pipe structure, an anti-falling structure of the silencing materials is additionally arranged inside the silencing air pipe structure, and follow-up silencing and noise reduction use is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of ventilation ducts, in particular to a sound-absorbing air duct structure. Background Art

[0002] With the increasing requirements of the SOLAS Convention and International Labor Conventions, shipowners are placing increasingly stringent environmental demands on ship accommodations. Superstructures have extremely limited headroom. To maintain this height, air ducts typically use flat ducts, 100mm or even 80mm high. These ducts experience high wind speeds, generate significant wind noise, and increase duct vibration.

[0003] At present, some domestic air-conditioning equipment manufacturers have adopted a series of noise reduction measures on air duct equipment to control the noise in the ventilation duct. Patent application number CN201621446141.7 discloses an air duct noise reduction device including: a tubular shell; a sound-absorbing and heat-insulating layer, the sound-absorbing and heat-insulating layer is fixed on the inner wall of the tubular shell; a sound-absorbing plate, the sound-absorbing plate is fixed in the tubular shell to divide the inner cavity of the tubular shell into at least two independent cavities.

[0004] However, after research, it was found that the above patent fixes the sound-absorbing material on the inner wall of the air duct, but after long-term use, the wind force will blow the sound-absorbing material on the inner wall off, affecting the subsequent sound-absorbing and noise reduction use.

[0005] Based on this, this solution proposes a sound-absorbing air duct structure. Utility Model Content

[0006] The purpose of the present invention is to provide a sound-absorbing air duct structure to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above purpose, the present invention provides the following technical solutions: a sound-absorbing air duct structure, comprising an air duct body,

[0008] An operating block is provided inside the air duct body, and sound-absorbing materials are fixedly installed on the inner walls of the air duct body. A mounting hole is provided on the top of the operating block.

[0009] Two mounting blocks are fixedly installed on the inner wall of one side of the mounting hole, and four screw guide sleeves are rotatably installed on both sides of the top and bottom of the mounting hole. A through hole is opened on the two mounting blocks, and sliding rods are movably installed in the two through holes. The ends of the two sliding rods close to each other are fixedly installed with a connecting block, and the ends of the two sliding rods away from each other are fixedly installed with a connecting plate, and the sides of the two connecting plates away from each other are fixedly installed with four racks;

[0010] A gear is fixedly sleeved on any screw guide sleeve, and a screw is threadedly sleeved on one end of any screw guide sleeve, a pressing plate is fixedly installed on one end of any screw, and any gear is meshed with the corresponding rack;

[0011] Two worm gears are rotatably mounted on the inner wall of one side of the mounting hole, and an extrusion shaft is rotatably mounted at the front end of each of the two worm gears. Long holes are opened on the two connecting blocks, and the two extrusion shafts are movably mounted on the corresponding long holes.

[0012] A motor is fixedly mounted on one side of the operating block, and a worm that meshes with the two worm wheels is fixedly sleeved on the output shaft of the motor.

[0013] Preferably, four mounting bolts are threadedly mounted on one side of the air duct body, and one end of the four mounting bolts are threadedly connected to the operating block.

[0014] By adopting the above technical solution, the operating block can be threadably mounted inside the air duct body through four mounting bolts.

[0015] Preferably, two telescopic rods are fixedly installed between any one of the pressing plates and the operating block.

[0016] By adopting the above technical solution, the rotation of the screw rod is restricted by the telescopic rod.

[0017] Preferably, the sound-absorbing material is composed of three layers, which are, from the inside out, a sound-absorbing sponge layer, a heat-insulating layer, and a fire-resistant glass fiber layer.

[0018] Preferably, a compression spring is sleeved on any telescopic rod, one end of the compression spring is fixed to the corresponding telescopic rod, and the other end is fixed to the corresponding pressing plate.

[0019] By adopting the above technical solution, the resetting of the telescopic rod and the pressing plate is facilitated by the compression spring.

[0020] Preferably, a return spring is sleeved on each of the two sliding rods, one end of the return spring is fixed on the corresponding sliding rod, and the other end is fixed on the inner wall of the corresponding through hole.

[0021] By adopting the above technical solution, the reset spring facilitates the reset of the sliding rod.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] By providing the sound-absorbing material, the fireproof glass fiber layer, the heat-insulating layer and the sound-absorbing sponge layer, the inner wall around the air duct body can be wiped clean first, and then the sound-absorbing material can be glued to the inner wall of the air duct body to achieve the sound-absorbing effect.

[0024] Through setting motor, extrusion shaft, reset spring, sliding rod, mounting block, connecting block, worm, long slot, worm wheel, screw guide sleeve, gear, screw rod, compression plate, mounting bolt, the operating block can be fixed in the inside of the air pipe body by the mounting bolt, then the outward movement of the compression plate is driven by starting the motor, the sound absorbing material on the inner wall of the air pipe body is compressed and fixed by the compression plate, the accidental falling of the sound absorbing material is prevented. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is the perspective view of the structure of the utility model;

[0026] Figure 2 It is the perspective view of the internal structure of the operating block of the utility model;

[0027] Figure 3 It is the structure schematic view of part A of the utility model;

[0028] Figure 4 It is the plan view of the structure of the utility model;

[0029] Figure 5 It is the structure schematic view of part B of the utility model;

[0030] Figure 6 It is the perspective view of the external structure of the operating block of the utility model;

[0031] Figure 7 It is the structure layer view of the sound absorbing material of the utility model.

[0032] In the drawing: 1, air pipe body; 2, mounting bolt; 3, operating block; 4, mounting hole; 5, compression plate; 6, motor; 7, extrusion shaft; 8, reset spring; 9, sliding rod; 10, mounting block; 11, connecting block; 12, worm; 13, long slot; 14, worm wheel; 15, compression spring; 16, screw rod; 17, sound absorbing material; 18, screw guide sleeve; 19, connecting plate; 20, telescopic rod; 21, fireproof glass fiber layer; 22, heat preservation layer; 23, sound absorbing sponge layer; 24, rack; 25, gear. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0034] Please refer to Figure 1-7The utility model provides a technical solution: a sound-absorbing air duct structure, including an air duct body 1, an operating block 3 is provided inside the air duct body 1, and sound-absorbing materials 17 are fixedly installed on the inner walls of the four sides of the air duct body 1, and a mounting hole 4 is opened on the top of the operating block 3. Through the above-mentioned structural setting, the inner walls of the four sides of the air duct body 1 can be wiped clean, and then the sound-absorbing material 17 can be glued to the inner wall of the air duct body 1 by glue to achieve the sound-absorbing effect.

[0035] Combine Figure 1-7 As shown, two mounting blocks 10 are fixedly installed on the inner wall of one side of the mounting hole 4, and four screw guide sleeves 18 are rotatably installed on both sides of the top and bottom of the mounting hole 4. A through hole is opened on each of the two mounting blocks 10, and a sliding rod 9 is movably installed in each of the two through holes. The ends of the two sliding rods 9 that are close to each other are fixedly installed with a connecting block 11, and the ends of the two sliding rods 9 that are away from each other are fixedly installed with a connecting plate 19. A reset spring 8 is sleeved on each of the two sliding rods 9, and one end of the reset spring 8 is fixed to the corresponding sliding rod 9. On the other end, the other end is fixed on the inner wall of the corresponding through hole. Four racks 24 are fixedly installed on the side away from each other of the two connecting plates 19. A gear 25 is fixedly sleeved on any screw guide sleeve 18, and one end of any screw guide sleeve 18 is threadedly sleeved with a screw 16. One end of any screw 16 is fixedly installed with a clamping plate 5. Any gear 25 is meshed with the corresponding rack 24. Two worm gears 14 are rotatably installed on the inner wall of one side of the mounting hole 4. The front ends of the two worm gears 14 are rotatably installed. Extrusion shaft 7, two connecting blocks 11 are provided with long holes 13, two extrusion shafts 7 are movably mounted on the corresponding long holes 13, one side of the operating block 3 is fixedly mounted with a motor 6, the output shaft of the motor 6 is fixedly sleeved with a worm 12 that is simultaneously engaged with two worm wheels 14. Through the above-mentioned structural arrangement, by starting the motor 6 to drive the rotation of the worm 12, the worm 12 drives the rotation of the two worm wheels 14, which can drive the rotation of the two extrusion shafts 7, and the two extrusion shafts 7 squeeze the corresponding long holes 13 respectively, The two connecting blocks 11 are driven to move apart up and down, which can drive the two connecting plates 19 to move apart up and down, which can drive the movement of the rack 24 on the connecting plate 19, and the rack 24 drives the rotation of the corresponding gear 25, which can drive the rotation of the corresponding screw guide sleeve 18, and the screw guide sleeve 18 drives the outward movement of the corresponding screw 16, which can drive the outward movement of the corresponding clamping plate 5. The clamping plate 5 can press and fix the sound-absorbing material 17 on the inner wall of 1 to prevent the sound-absorbing material 17 from accidentally falling off.

[0036] Combine Figure 1-6As shown, four mounting bolts 2 are threadedly installed on one side of the air duct body 1, and one end of the four mounting bolts 2 is threadedly connected to the operating block 3. Through the above structural setting, the operating block 3 can be threadedly installed inside the air duct body 1 through the four mounting bolts 2 in advance.

[0037] Combine Figure 1-6 As shown, two telescopic rods 20 are fixedly installed between any one of the clamping plates 5 and the operating block 3, and a compression spring 15 is sleeved on any one of the telescopic rods 20. One end of the compression spring 15 is fixed to the corresponding telescopic rod 20, and the other end is fixed to the corresponding clamping plate 5. Through the above-mentioned structural arrangement, the rotation of the screw rod 16 is restricted by the telescopic rod 20, and the compression spring 15 facilitates the resetting of the telescopic rod 20 and the clamping plate 5.

[0038] Combine Figure 1-7 As shown, the sound-absorbing material 17 is composed of three layers, which are, from the inside to the outside, a sound-absorbing sponge layer 23 , a heat-insulating layer 22 , and a fire-resistant glass fiber layer 21 .

[0039] The working principle of the utility model is as follows: first, the inner wall of the air duct body 1 is wiped clean, and then the sound-absorbing material 17 is glued to the inner wall of the air duct body 1 by glue to achieve the sound-absorbing effect. However, after long-term use, the glue may become ineffective, causing the sound-absorbing material 17 to accidentally fall off. Therefore, the operating block 3 can be threadedly installed inside the air duct body 1 through four mounting bolts 2 in advance, and then the worm 12 is driven to rotate by starting the motor 6. The worm 12 drives the rotation of the two worm wheels 14, which can drive the rotation of the two extrusion shafts 7. The two extrusion shafts 7 By squeezing the corresponding elongated holes 13 respectively, the two connecting blocks 11 can be driven to move apart up and down, which can drive the two connecting plates 19 to move apart up and down, which can drive the rack 24 on the connecting plate 19 to move, the rack 24 drives the rotation of the corresponding gear 25, which can drive the rotation of the corresponding screw guide sleeve 18, the screw guide sleeve 18 drives the outward movement of the corresponding screw 16, which can drive the outward movement of the corresponding pressing plate 5, and the pressing plate 5 can press and fix the sound-absorbing material 17 on the inner wall of 1 to prevent the sound-absorbing material 17 from accidentally falling off. The utility model has a simple structure and is easy to use. The sound-absorbing air duct structure can reduce the noise of the air duct through the internal sound-absorbing material, and an anti-falling structure of the sound-absorbing material is added inside to facilitate subsequent sound-absorbing and noise-reducing use.

[0040] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field. Although the embodiments of the present invention have been shown and described, it is understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sound-absorbing air duct structure, comprising an air duct body (1), characterized in that: An operating block (3) is provided inside the air duct body (1), and sound-absorbing materials (17) are fixedly installed on the inner walls of the air duct body (1). A mounting hole (4) is provided on the top of the operating block (3); Two mounting blocks (10) are fixedly mounted on the inner wall of one side of the mounting hole (4), and four screw guide sleeves (18) are rotatably mounted on both sides of the top and bottom of the mounting hole (4), and through holes are opened on the two mounting blocks (10), and sliding rods (9) are movably mounted in the two through holes, and the ends of the two sliding rods (9) that are close to each other are fixedly mounted with a connecting block (11), and the ends of the two sliding rods (9) that are away from each other are fixedly mounted with a connecting plate (19), and the sides of the two connecting plates (19) that are away from each other are fixedly mounted with four racks (24); A gear (25) is fixedly sleeved on any screw guide sleeve (18), and a screw (16) is threadedly sleeved on one end of any screw guide sleeve (18), and a pressing plate (5) is fixedly installed on one end of any screw (16), and any gear (25) is respectively engaged with the corresponding rack (24); Two worm gears (14) are rotatably mounted on the inner wall of one side of the mounting hole (4), and an extrusion shaft (7) is rotatably mounted at the front end of each of the two worm gears (14). Both of the two connecting blocks (11) are provided with a long hole (13), and the two extrusion shafts (7) are movably mounted on the corresponding long hole (13). A motor (6) is fixedly mounted on one side of the operating block (3), and a worm (12) is fixedly sleeved on the output shaft of the motor (6) and is engaged with two worm wheels (14) at the same time.

2. The sound-absorbing air duct structure according to claim 1, characterized in that: Four mounting bolts (2) are threadedly mounted on one side of the air duct body (1), and one end of each of the four mounting bolts (2) is threadedly connected to the operating block (3).

3. The sound-absorbing air duct structure according to claim 1, characterized in that: Two telescopic rods (20) are fixedly installed between any one of the pressing plates (5) and the operating block (3).

4. The sound-absorbing air duct structure according to claim 1, characterized in that: The sound-absorbing material (17) comprises three layers, which are, from the inside out, a sound-absorbing sponge layer (23), a heat-insulating layer (22), and a fireproof glass fiber layer (21).

5. The sound-absorbing air duct structure according to claim 3, characterized in that: A compression spring (15) is sleeved on any telescopic rod (20), one end of the compression spring (15) is fixed on the corresponding telescopic rod (20), and the other end is fixed on the corresponding pressing plate (5).

6. The sound-absorbing air duct structure according to claim 1, characterized in that: A return spring (8) is sleeved on each of the two sliding rods (9), one end of the return spring (8) is fixed on the corresponding sliding rod (9), and the other end is fixed on the inner wall of the corresponding through hole.

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