Heating and ventilation ventilation pipe noise reduction device

Abstract

The utility model discloses a noise reduction device for a heating and ventilation ventilation pipe, which comprises a ventilation pipe main body 1, a heat preservation layer 2 wrapped on the periphery of the ventilation pipe and a sound absorption layer 3 wrapped on the periphery of the heat preservation layer 2, and the two ends of the ventilation pipe main body 1 are respectively provided with a first connecting end and a second connecting end. Every two ventilation pipe bodies 1 are connected through matching of the first connecting ends and the second connecting ends of the ventilation pipe bodies 1. Wherein the first connecting end comprises a connecting part 5 and an annular necklace 4, an outer ring of the annular necklace 4 is fixedly connected with the ventilation pipe main body 1, an inner ring of the annular necklace 4 is fixedly connected with the connecting part 5, nuts 6 are fixedly arranged on the inner side wall of the connecting part 5, and open holes in one-to-one correspondence with the nuts 6 are formed in the side wall of the connecting part 5. The second connecting end comprises a connecting recess 7 and an annular base 8, the connecting recess 7 is in one-to-one correspondence with the nut 6, the first connecting end and the second connecting end are locked through a screw 9, and the screw 9 sequentially penetrates through an opening in the connecting recess 7 and an opening in the side wall of the connecting part 5 and then is in threaded fit with the nut 6.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of heating and ventilation, specifically relates to a heating and ventilation pipe noise reduction device. BACKGROUND

[0002] The heating and ventilation air conditioning system is an important component of the heating and ventilation air conditioner, since the heating and ventilation air conditioner is the equipment responsible for indoor or vehicle heating, ventilation and air conditioning, controls indoor temperature, improves indoor comfort, is an important link in medium and large industrial buildings or office buildings, and occupies an important role in the fields or industries of pharmacy, electronics and oil and gas. At present, the heating and ventilation pipe usually adopts sectional installation, flanges for connection are arranged at the two ends of the ventilation pipe, so that the diameter of the connecting part is greater than that of the main body of the ventilation pipe, and this position is usually ignored during noise reduction treatment, and this position is most likely to cause noise and reduce the heat preservation effect due to poor air tightness. SUMMARY

[0003] The utility model provides a heating and ventilation pipe noise reduction device, and the specific technical scheme is as follows:

[0004] A heating and ventilation pipe noise reduction device, comprising a ventilation pipe main body, a heat preservation layer wrapped around the outer periphery of the ventilation pipe and an acoustic absorption layer wrapped around the outer periphery of the heat preservation layer, first connecting ends and second connecting ends are arranged at the two ends of the ventilation pipe main body respectively, and the ventilation pipe main body is connected through the first connecting ends and the second connecting ends in pairs; wherein: the first connecting end comprises a connecting part and an annular collar, the diameter of the connecting part is smaller than that of the ventilation pipe main body, the outer ring of the annular collar is fixedly connected with the ventilation pipe main body, the inner ring of the annular collar is fixedly connected with the connecting part, nuts are fixedly arranged on the inner side wall of the connecting part, and the connecting part side wall is provided with holes corresponding to the nuts in one-to-one correspondence; the second connecting end comprises a connecting recess and an annular base, the connecting recess corresponds to the nut in one-to-one correspondence, the recess bottom of the connecting recess is provided with an opening corresponding to the nut, the outer ring of the annular base is fixedly connected with the ventilation pipe main body, and the inner ring of the annular base is sleeved on the connecting part; the first connecting end and the second connecting end are locked through screws, the screws correspond to the nuts in one-to-one correspondence, and the screws pass through the holes on the connecting recess and the holes on the connecting part side wall in sequence and are threadedly connected with the nuts.

[0005] A reinforcing plate is arranged between the inner ring of the annular base and the side wall of the connecting recess, so as to strengthen the structural strength of the annular base and the connecting recess.

[0006] The nuts are arranged in an array on the inner side wall of the connecting part.

[0007] The recess bottom of the connecting recess is provided with a first sealing ring, and the screw presses the first sealing ring when locked.

[0008] A second sealing ring is arranged between the annular collar and the annular base, the second sealing ring is sleeved on the outer periphery of the connecting portion, and the annular base presses the second sealing ring when the opening on the connecting recess and the opening on the side wall of the connecting portion are aligned.

[0009] The above technical scheme of the utility model has the following beneficial technical effects: through the matching arrangement of the first connecting end and the second connecting end, the heating ventilation pipe can be self-locked through the cooperation of the screw and the nut when being connected two by two, the reserved recess makes the nut not protrude, so that the wrapping of the thermal insulation layer and the sound-absorbing layer after locking will not cause the thermal insulation layer and the sound-absorbing layer to be torn due to different diameters, or additional fixing measures are needed due to different diameters. The device is particularly suitable for extreme temperature areas, reduces noise while preventing temperature loss, effectively saves energy. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 is a structural schematic view of the heating ventilation pipe two by two in the utility model;

[0011] Figure 2 is Figure 1 an enlarged structural schematic view of part a in the utility model;

[0012] Wherein: 1-ventilation pipe main body, 2-thermal insulation layer, 3-sound-absorbing layer, 4-annular collar, 5-connecting portion, 6-nut, 7-connecting recess, 8-annular base, 9-screw, 10-stiffener, 11-first sealing ring, 12-second sealing ring. DETAILED DESCRIPTION

[0013] In order to make the purpose, technical scheme and advantages of the utility model more clear and obvious, the utility model is further described in detail below in combination with specific implementation manners and with reference to the drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. In addition, in the following description, the description of known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.

[0014] The utility model provides a kind of HVAC duct noise reduction device, including ventilation pipe body 1, the heat preservation layer 2 wrapped in the outer periphery of ventilation pipe and the sound-absorbing layer 3 wrapped in the outer periphery of heat preservation layer 2, ventilation pipe body 1 two ends are respectively provided with first connecting end and second connecting end, ventilation pipe body 1 is connected by its first connecting end and second connecting end matching between two-to-two;Wherein: first connecting end includes connecting portion 5 and annular necklace 4, connecting portion 5 diameter is less than ventilation pipe body 1, annular necklace 4 outer ring and ventilation pipe body 1 fixed connection, annular necklace 4 inner ring and connecting portion 5 fixed connection, nut 6 is fixedly arranged on the inner side wall of connecting portion 5, connecting portion 5 side wall is provided with the aperture corresponding with nut 6;Second connecting end includes connecting recess 7 and annular base 8, connecting recess 7 with nut 6 one-to-one, the recess bottom of connecting recess 7 is provided with the aperture corresponding with nut 6, annular base 8 outer ring and ventilation pipe body 1 fixed connection, annular base 8 inner ring is set in connecting portion 5;First connecting end and second connecting end are locked by screw 9, screw 9 with nut 6 one-to-one, screw 9 is sequentially passed through the aperture on connecting recess 7 and the aperture on the side wall of connecting portion 5 and then is screwed with nut 6 cooperation.By the matching setting of first connecting end and second connecting end, HVAC duct can be self-locked by the cooperation of screw 9 and nut 6 when being connected two by two, recess is reserved so that the nut does not protrude, so that the wrapping of heat preservation layer 2 and sound-absorbing layer 3 after locking does not appear because of the diameter difference and causes heat preservation layer 2 and sound-absorbing layer 3 to be broken, or because of the diameter not and needs additional fixing measures.The device is particularly suitable for extreme temperature areas, reduces noise while preventing temperature loss, effectively saves energy.

[0015] Annular base 8 inner ring and connecting recess 7 side wall are provided with reinforcing plate 10 between, for reinforcing the structural strength of annular base 8 and connecting recess 7.

[0016] Nut 6 is arranged as multiple and arrayed on the inner side wall of connecting portion.

[0017] Connecting recess 7 recess bottom is provided with first sealing ring 11, and screw 9 presses first sealing ring 11 when locking.

[0018] Annular necklace 4 and annular base 8 are provided with second sealing ring 12 between, second sealing ring 12 is set on the outer periphery of connecting portion 5, and annular base 8 presses second sealing ring 12 when the aperture on connecting recess 7 and the aperture on the side wall of connecting portion 5 are aligned.

Claims

1. A heating ventilation and air conditioning duct noise reduction device, characterized by, The application relates to a ventilation pipe, which comprises a ventilation pipe body (1), a heat insulation layer (2) wrapped around the outer periphery of the ventilation pipe body (1), and a sound absorption layer (3) wrapped around the outer periphery of the heat insulation layer (2), wherein the ventilation pipe body (1) is provided with a first connecting end and a second connecting end at two ends respectively, and the ventilation pipe body (1) is connected through the first connecting end and the second connecting end. The first connecting end comprises a connecting part (5) and a ring-shaped collar (4), the diameter of the connecting part (5) is smaller than that of the ventilation pipe body (1), the outer ring of the ring-shaped collar (4) is fixedly connected with the ventilation pipe body (1), the inner ring of the ring-shaped collar (4) is fixedly connected with the connecting part (5), a nut (6) is fixedly arranged on the inner side wall of the connecting part (5), and a hole corresponding to the nut (6) is arranged on the side wall of the connecting part (5). The second connecting end comprises a connecting recess (7) and a ring-shaped base (8), the connecting recess (7) corresponds to the nut (6), the recess bottom of the connecting recess (7) is provided with a hole corresponding to the nut (6), the outer ring of the ring-shaped base (8) is fixedly connected with the ventilation pipe body (1), and the inner ring of the ring-shaped base (8) is sleeved on the connecting part (5). The first connecting end and the second connecting end are locked through a screw (9), the screw (9) corresponds to the nut (6), the screw (9) passes through the hole on the connecting recess (7) and the hole on the side wall of the connecting part (5) in sequence and is screwed with the nut (6).

2. The HVAC duct noise reduction device of claim 1, wherein A reinforcing plate (10) is arranged between the inner ring of the ring-shaped base (8) and the side wall of the connecting recess (7) to reinforce the structural strength of the ring-shaped base (8) and the connecting recess (7).

3. The HVAC duct noise reduction device of claim 1, wherein The nut (6) is arranged in an array on the inner side wall of the connecting part.

4. The HVAC duct noise reduction device of claim 1, wherein The recess bottom of the connecting recess (7) is provided with a first sealing ring (11), and the screw (9) presses the first sealing ring (11) when being locked.

5. The HVAC duct noise reduction device of claim 1, wherein A second sealing ring (12) is arranged between the ring-shaped collar (4) and the ring-shaped base (8), the second sealing ring (12) is sleeved on the outer periphery of the connecting part (5), and the ring-shaped base (8) presses the second sealing ring (12) when the hole on the connecting recess (7) and the hole on the side wall of the connecting part (5) are aligned.

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