CN210685035U

CN210685035U - Silencing sheet

Info

Publication number: CN210685035U
Application number: CN201921514236.1U
Authority: CN
Inventors: 王体; 王卫皇; 彭海
Original assignee: Changsha Lanbao Environmental Treatment Co Ltd
Current assignee: Changsha Lanbao Environmental Treatment Co Ltd
Priority date: 2019-09-12
Filing date: 2019-09-12
Publication date: 2020-06-05
Anticipated expiration: 2029-09-12

Abstract

The embodiment of the application discloses noise elimination piece includes: the frame body is formed by enclosing two opposite perforated plates and side plates on four sides, two corrugated combining parts and an arc-shaped part are arranged on the perforated plates, the arc-shaped part transversely extends from the first side edge of the perforated plate to the third side edge of the perforated plate, and the two corrugated combining parts respectively longitudinally extend from two opposite sides of the perforated plate until the two corrugated combining parts are intersected with the arc-shaped part so as to divide the perforated plate into a plurality of sub-plates; a sound absorbing portion disposed within the frame; and the plurality of resonance tubes are arranged in the frame body, one end of each resonance tube is closed, and the other end of each resonance tube is connected with the through hole in the daughter board. The position of the silencing piece can be adjusted, so that the silencing piece is convenient to mount.

Description

Silencing sheet

Technical Field

The embodiment of the application relates to the field of buildings, in particular to an anechoic sheet.

Background

The silencing sheet is also called a sheet type silencer, and usually a matrix silencer is formed by a plurality of silencing sheets and is used as a silencing device of a channel, so that the silencing sheet is frequently applied to a building sound insulation system and has a good silencing effect on airflow noise. The arrangement mode of the silencing pieces is related to the direction of the channel, so that the silencing pieces need to be positioned at the installation positions when being installed, and the rotation of the silencing pieces is avoided as much as possible. Traditional noise reduction piece is mostly regarded as the mask material by the metal perforated plate, and inside packing sound absorbing material, but the metal perforated plate is relatively harder, and unable deformation can be difficult for avoiding appearing interfering or fixed hole site skew when being applied to for example turning or other structure type's air pipe, and then lead to the installation difficulty.

Disclosure of Invention

The technical problem that this application embodiment will solve provides a simple to operate's noise elimination piece.

The embodiment of the application is realized by the following technical scheme:

an anechoic sheet comprising: the frame body is formed by enclosing two opposite perforated plates and side plates on four sides, two corrugated combining parts and an arc-shaped part are arranged on the perforated plates, the arc-shaped part transversely extends from the first side edge of the perforated plate to the third side edge of the perforated plate, and the two corrugated combining parts respectively longitudinally extend from two opposite sides of the perforated plate until the two corrugated combining parts are intersected with the arc-shaped part so as to divide the perforated plate into a plurality of sub-plates; a sound absorbing portion disposed within the frame; and the plurality of resonance tubes are arranged in the frame body, one end of each resonance tube is closed, and the other end of each resonance tube is connected with the through hole in the daughter board.

Further, the corrugated combining part is a foldable corrugated sheet and is connected with the sub-plate in a welding mode.

Further, the surface of the corrugated joint is provided with a sound absorbing coating.

Further, arc portion is the rubber strip, arc portion with the daughter board riveting is connected.

Further, the sound absorption part is a plurality of sound absorption bags connected with each other, each sound absorption bag corresponds to the sub-board, and an edge joint part of the adjacent sound absorption bag corresponds to the ripple joint part or the arc part.

Further, the sound absorption bag includes a bag body and a sound absorption material filled in the bag body.

Further, the sound absorption material is glass wool, rock wool, mineral wool, felt, foam plastic or expanded perlite.

Further, a through hole for the resonance tube to pass through is formed in the sound absorption bag.

Furthermore, the edge of the through hole is sewn by elastic materials, the diameter of the through hole is smaller than that of the resonance tube, and the part of the resonance tube corresponding to the through hole is wrapped by sound absorption cotton.

The beneficial effects are that:

compared with the prior art, the silencing sheet provided by the embodiment of the application has the advantages that the frame body is arranged, and the frame body is formed by two opposite perforated plates and side plates on four sides in a surrounding mode and is used for providing a space for accommodating the part. Be provided with two ripple joint portions and arc portion on every perforated plate, arc portion transversely extends to relative third side edge from perforated plate first side edge, thereby make the extending direction that the upper portion of perforated plate can the arc portion carry out slight rotation for the lower part of relative perforated plate for the axle, two ripple joint portions are respectively from the relative both sides of perforated plate, longitudinal extension is until intersecting with arc portion, concretely, ripple joint portion can extend from the second side and the fourth side of perforated plate respectively, thereby violently indulge in order to split the perforated plate into a plurality of daughter boards, adjacent two daughter boards can realize the deflection of A angle, thereby if necessary for external building structure abdication in order to prevent interfering, also can be by daughter board compensation distance when fixed hole site skew in order to facilitate the installation.

Drawings

The following detailed description of embodiments of the present application is provided in conjunction with the appended drawings, wherein:

fig. 1 is a schematic structural diagram of an anechoic sheet according to an embodiment of the present application;

fig. 2 is a schematic internal structure diagram of an anechoic sheet according to an embodiment of the present application;

fig. 3 is a schematic structural diagram of an anechoic sheet under deflection according to an embodiment of the present application.

Detailed Description

In order to make those skilled in the art better understand the technical solutions of the embodiments of the present application, the embodiments of the present application are described in detail below with reference to the drawings, and the description in this section is only exemplary and explanatory, and should not have any limiting effect on the scope of the embodiments of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

It should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientation or positional relationship shown in fig. 1 or the orientation or positional relationship that a product of the embodiment of the present application is usually placed when in use, which are only used for convenience of describing the embodiment of the present application and simplifying the description, but do not indicate or imply that the device or element to be referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, should not be construed as limiting the embodiment of the present application. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the embodiments of the present application, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. Specific meanings of the above terms in the embodiments of the present application can be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1 to 3, the noise-canceling sheet includes a housing 1, a sound-absorbing portion 2, and a plurality of resonance tubes 3 provided in the housing 1.

The frame 1 is surrounded by two opposite perforated plates 11 and four side plates 12 to provide a space for accommodating components. Each perforated plate 11 is provided with two corrugated coupling portions 13 and an arc-shaped portion 14, the arc-shaped portion 14 extending transversely from a first side edge of the perforated plate 11 to an opposite third side edge, so that the upper portion of the perforated plate 11 can be slightly rotated with respect to the lower portion of the perforated plate 11 about the extending direction of the arc-shaped portion 14, and two corrugated engaging portions 13 extend longitudinally from opposite sides of the perforated plate 11, respectively, until meeting the arc-shaped portion 14, and specifically, the corrugated engaging portions 13 can extend from the second side and the fourth side of the perforated plate 11, respectively, thereby, the perforated plate 11 is divided into a plurality of sub-plates 16 in the transverse and longitudinal directions, the deflection of an angle A can be realized by two adjacent sub-plates 16, the angle A can be set to be 1-30 degrees according to the ripple size of the ripple combining part 13, thereby giving way to the external building structure to prevent interference if necessary, and also compensating the distance by the sub-board 16 when the fixing hole position is deviated to facilitate the installation.

The sound absorption part 2 is arranged in the frame body 1, and the sound absorption effect is realized through the damping principle; one end of the resonance tube 3 is closed, the other end of the resonance tube 3 is connected with the through hole 15 on the sub-plate 16, sound waves entering from the through hole 15 are reflected in the resonance tube 3 in a reciprocating mode, and the sound absorption part 2 is matched with the sound absorption part, so that good noise elimination and reduction effects are achieved.

In one possible embodiment, as shown in fig. 1 and 3, the corrugated joint 13 is a foldable corrugated sheet, and both the corrugated joint 13 and the sub-sheet 16 are metal pieces, and a welded connection can be used to secure the connection.

In a possible embodiment, the surface of the corrugated joint 13 is provided with a sound-absorbing coating 131 to improve the sound-absorbing effect in this area.

In a possible embodiment, the arc-shaped portion 14 is a rubber strip to better adapt to elastic deformation, and the arc-shaped portion 14 is riveted with the daughter board 16, so that the connection is firm and is not easy to loosen.

In a possible embodiment, as shown in fig. 2, the sound absorption part 2 is a plurality of sound absorption bags 21 connected with each other, each sound absorption bag 21 corresponds to the daughter board 16, one daughter board 16 can be regarded as a separate sound attenuation area, the size of the sound absorption bag 21 should match the range covered by the daughter board 16, and neither too large causes the sound absorption bag 21 to fold itself, nor too small causes the area which cannot be covered to affect the sound absorption effect. It can be understood that the sound absorption bag 21 can be directly tailored into a corresponding shape according to the shape and size of the daughter board 16, and particularly, when the daughter board 16 is in a special-shaped structure, the sound absorption bag 21 does not have the problem of sound attenuation caused by the fact that the sound absorption bag cannot be covered. The edge joint portions of the adjacent sound absorption pockets 21 correspond to the corrugated joint portions 13 or the arc-shaped portions 14, so that when the daughter board 16 deflects, the corresponding sound absorption pockets 21 also deflect at the same angle and cannot be pulled to the adjacent sound absorption pockets 21, and the sound absorption effect is good.

In one possible embodiment, as shown in fig. 2, the sound absorption bag 21 includes a bag body 22 and a sound absorption material 23 filled in the bag body 22, and the sound absorption material 23 is glass wool, rock wool, mineral wool, felt, foam plastic or expanded perlite, so that the sound absorption effect is good and the cost is low.

In one possible embodiment, as shown in fig. 2, the sound absorption bag 21 may be provided with through-holes 24 through which the resonance tube 3 passes, the edge of each through-hole 24 is sewn using an elastic material, and the diameter of the through-hole 24 may be smaller than that of the resonance tube 3, thereby allowing the through-hole 24 to closely adhere to the resonance tube 3, preventing sound waves from entering along the gap without being muffled, and ensuring the muffling effect.

In one possible embodiment, sound absorption cotton may be wrapped around the resonance pipe 3 at a position corresponding to the through hole 24 to improve the sound attenuation effect.

The above embodiments are only used for illustrating the technical solutions of the present application and not for limiting the same, and any modification or equivalent replacement without departing from the spirit and scope of the embodiments of the present application should be covered within the technical solutions of the present application.

Claims

1. An anechoic sheet, comprising:

the frame body (1) is formed by enclosing two opposite perforated plates (11) and side plates (12) on four sides, two corrugated combining parts (13) and an arc-shaped part (14) are arranged on each perforated plate (11), each arc-shaped part (14) transversely extends from a first side edge of each perforated plate (11) to an opposite third side edge, and the two corrugated combining parts (13) respectively longitudinally extend from two opposite sides of each perforated plate (11) until the two corrugated combining parts meet the arc-shaped part (14) to divide the perforated plates (11) into a plurality of sub-plates (16);

a sound absorbing part (2), wherein the sound absorbing part (2) is arranged in the frame body (1);

and the resonance tubes (3) are arranged in the frame body (1), one ends of the resonance tubes (3) are closed, and the other ends of the resonance tubes (3) are connected with the through holes (15) in the sub-plate (16).

2. An anechoic sheet according to claim 1, wherein: the corrugated combining part (13) is a foldable corrugated sheet, and the corrugated combining part (13) is connected with the sub-plate (16) in a welding mode.

3. An anechoic sheet according to claim 1, wherein: the surface of the corrugated joint part (13) is provided with a sound absorption coating (131).

4. An anechoic sheet according to any one of claims 1 to 3, wherein: arc portion (14) are the rubber strip, arc portion (14) with daughter board (16) riveting is connected.

5. An anechoic sheet according to any one of claims 1 to 3, wherein: the sound absorption part (2) is a plurality of sound absorption bags (21) connected with each other, each sound absorption bag (21) corresponds to the sub-board (16), and the edge joint part of the adjacent sound absorption bags (21) corresponds to the ripple joint part (13) or the arc part (14).

6. An anechoic sheet according to claim 5, wherein: the sound absorption bag (21) comprises a bag body (22) and a sound absorption material (23) filled in the bag body (22).

7. An anechoic sheet according to claim 6, wherein: the sound absorption material (23) is glass wool, rock wool, mineral wool, felt, foam plastic or expanded perlite.

8. An anechoic sheet according to claim 5, wherein: the sound absorption bag (21) is provided with a through hole (24) for the resonance tube (3) to pass through.

9. An anechoic sheet according to claim 8, wherein: the edge of through-hole (24) adopts elastic material to sew up, the diameter of through-hole (24) is less than the diameter of resonance pipe (3), resonance pipe (3) correspond the position parcel of through-hole (24) has the sound absorption cotton.