CN214068321U

CN214068321U - Noise eliminator for noise control of square vent

Info

Publication number: CN214068321U
Application number: CN202022760336.1U
Authority: CN
Inventors: 刘先瑞; 方劲松
Original assignee: Guizhou Panjiang Cbm Development & Utilization Co ltd
Current assignee: Guizhou Panjiang Cbm Development & Utilization Co ltd
Priority date: 2020-11-25
Filing date: 2020-11-25
Publication date: 2021-08-27
Anticipated expiration: 2030-11-25

Abstract

The utility model relates to the field of noise control, in particular to a noise elimination device for noise control of a square vent, which comprises a device shell, wherein the device shell comprises a top plate and a lower plate which are arranged in parallel up and down, and a first side plate and a second side plate which are respectively and fixedly connected with the two ends of the lower plate, the first side plate and the second side plate extend upwards and are connected with the lower end surface of the top plate, the joint of the top plate, the first side plate and the second side plate is detachably connected through a locking piece, the upper end surface of the lower plate is rotatably provided with a plurality of noise elimination insertion pieces, the center of the lower end surface of each noise elimination insertion piece is movably penetrated with a central shaft, the lower end of the central shaft is fixedly connected with the upper end surface of the lower plate, the upper end surface of the top plate is inserted with a limited piece corresponding to the center of the upper end surface of each noise elimination insertion piece, the utility model carries out noise elimination treatment on the noise discharged by the square vent, the direction of the silencing channel can be adjusted, the transmission path of noise is changed, and the influence of the noise on a sensitive area is further reduced.

Description

Noise eliminator for noise control of square vent

Technical Field

The utility model relates to a noise control field especially relates to a square vent noise abatement is with noise eliminator.

Background

The square ventilation opening noise eliminator is mainly installed on building facilities which have higher noise and have certain requirements on ventilation. The air compressor is widely applied to production workshops such as a generator room, a blower room, an air compressor room and a combustion machine room. In order to meet the requirements of mass air intake and heat dissipation of production equipment, a large ventilation opening is reserved in a wall body or a roof of a workshop. Noise is discharged from the ventilation opening in the production process, so that noise pollution is generated to the surrounding environment; the square ventilation opening noise abatement device has the advantages that the ventilation opening area is large, the silencing volume of the insert type silencing device is low, the noise transmission path cannot be changed, the influence of noise on a specific sensitive area cannot be actively avoided, and the like.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the background technology and providing a noise eliminator for noise control of a square vent.

In order to achieve the above purpose, the utility model adopts the technical scheme that: the utility model provides a high strength steel band pipe of cold-resistant fire prevention, includes the device casing, the device casing includes top plate and hypoplastron, the first curb plate and the second curb plate of difference fixed connection hypoplastron both ends department of upper and lower parallel arrangement, first curb plate upwards extends and connects the lower terminal surface at the top plate with the second curb plate, the top plate passes through retaining member releasable connection with first curb plate and second curb plate junction, the up end of hypoplastron rotates installs a plurality of noise elimination inserted sheet, the activity of the lower terminal surface center department of noise elimination inserted sheet runs through there is the center pin earth's axis, just the lower extreme of center pin earth's axis and the up end fixed connection of hypoplastron, the up end of top plate is put the department of corresponding the up end center of every noise elimination inserted sheet and is inserted finite finished piece.

Preferably, the adjacent silencing insertion sheets are arranged at equal intervals, silencing channels are formed between the adjacent silencing insertion sheets, and a plurality of sound inlet and outlet areas are formed in the front and the rear of the silencing channels respectively.

Preferably, the retaining member includes a top bolt passing through from a corner of the upper end face of the top plate, the lower ends of the top bolts located on both sides pass through the upper end faces of the first side plate and the second side plate respectively, and the top bolt is in threaded fit with the first side plate and the second side plate.

Preferably, the limiting piece comprises a central shaft screw rod penetrating through the upper end face of the top plate and a central shaft nut fixedly embedded in the center of the upper end face of the silencing insertion piece, and the central shaft screw rod penetrates through the inner side of the central shaft nut and is in threaded fit with the central shaft nut.

Preferably, the noise elimination inserted sheet is including filling in the sound absorbing material in the inboard, the noise elimination inserted sheet is the metal material, a plurality of through-hole has been seted up in the both sides surface of noise elimination inserted sheet through.

Compared with the prior art, the utility model discloses following beneficial effect has: noise emitted by the square ventilation opening is subjected to noise elimination treatment, meanwhile, the direction of a noise elimination channel can be adjusted, the transmission path of the noise is changed, the influence of the noise on a sensitive area is further reduced, and the noise elimination device is comprehensive.

Drawings

FIG. 1 is a schematic structural view of a square ventilation opening noise abatement muffler of the present invention;

FIG. 2 is a schematic view of the square ventilation opening noise abatement muffler of the present invention;

FIG. 3 is a schematic side sectional view of a square ventilation opening noise abatement muffler of the present invention;

fig. 4 is a schematic diagram of the noise abatement device for square ventilation opening noise abatement of the present invention.

In the figure: 1. a first side plate; 2. a lower plate; 3. a second side plate; 4. a top plate; 5. a silencing insert; 6. a central shaft screw; 7. a top bolt; 8. a central shaft nut; 9. a central shaft ground shaft; 10. a sound absorbing material; 11. A sound ingress and egress region; 12. a sound-deadening channel.

Detailed Description

The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art.

The silencing device for noise control of the square vent comprises a device shell, wherein the device shell comprises a top plate 4 and a lower plate 2 which are arranged in parallel up and down, and a first side plate 1 and a second side plate 3 which are respectively fixedly connected with two ends of the lower plate 2, the first side plate 1 and the second side plate 3 extend upwards and are connected with the lower end surface of the top plate 4, the joints of the top plate 4, the first side plate 1 and the second side plate 3 are detachably connected through locking pieces, a plurality of silencing insertion sheets 5 are rotatably arranged on the upper end surface of the lower plate 2, a central shaft ground shaft 9 penetrates through the centers of the lower end surfaces of the silencing insertion sheets 5, and the lower end of the central shaft ground shaft 9 is fixedly connected with the upper end surface of the lower plate 2, a limiting part is inserted into the upper end surface of the top plate 4 corresponding to the central position of the upper end surface of each silencing insertion sheet 5, and the silencing insertion sheets 5 can rotate by taking the M-N central shaft as the shaft as shown in fig. 3.

As shown in fig. 4, the adjacent silencing insertion sheets 5 are arranged at equal intervals, silencing channels 12 are formed between the adjacent silencing insertion sheets 5, sound entering and exiting areas 11 are respectively formed at the front and the rear of the silencing channels 12, and sound enters or exits from the sound entering and exiting areas 11 and is reduced in noise through the silencing channels 12 in the process.

The retaining member includes top bolt 7 that runs through from roof 4 up end corner, and the lower extreme that is located top bolt 7 of both sides passes the up end of first curb plate 1 and second curb plate 3 respectively, is screw-thread fit between top bolt 7 and first curb plate 1 and the second curb plate 3, can pull down roof 4 after screwing off top bolt 7, the later maintenance of being convenient for.

The limiting part comprises a central shaft screw rod 6 and a central shaft nut 8, wherein the central shaft screw rod 6 penetrates through the upper end face of the top plate 4, the central shaft nut 8 is fixedly embedded in the center of the upper end face of the silencing insertion piece 5, the central shaft screw rod 6 penetrates through the inner side of the central shaft nut 8 and is in threaded fit with the central shaft nut 8, the silencing insertion piece 5 can be rotated after the central shaft screw rod 6 is upwards rotated to be separated from the central shaft nut 8, and the sound transmission direction of the silencing channel 12 is changed.

The noise elimination inserted sheet 5 is including filling in the sound absorbing material 10 in the inboard, and noise elimination inserted sheet 5 is the metal material, and the both sides surface of noise elimination inserted sheet 5 runs through and has seted up a plurality of through-hole, promotes the attraction effect.

The working principle is as follows: the angle of each silencing insertion piece 5 can be adjusted, the direction of the silencing channel 12 is changed accordingly, the silencing insertion pieces 5 are adjusted to proper positions and then fastened through the central shaft screw 6, silencing treatment is carried out on noise after the noise passes through the device, the angle of the silencing channel 12 can be adjusted according to the position of a sensitive area through secondary noise emission after the silencing device, and therefore the effect of the noise on the sensitive area is further reduced, and the silencing device is comprehensive.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the principles of the present invention may be applied to any other embodiment without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a square vent noise abatement is with noise eliminator, includes the device casing, the device casing includes roof (4) and hypoplastron (2), first curb plate (1) and second curb plate (3) of fixed connection hypoplastron (2) both ends department about parallel arrangement, its characterized in that respectively: first curb plate (1) upwards extend and connect the lower terminal surface at roof (4) with second curb plate (3), roof (4) pass through retaining member releasable connection with first curb plate (1) and second curb plate (3) junction, the up end of hypoplastron (2) is rotated and is installed a plurality of noise elimination inserted sheet (5), the activity of the lower terminal surface center department of noise elimination inserted sheet (5) runs through center pin earth's axis (9), just the lower extreme of center pin earth's axis (9) and the up end fixed connection of hypoplastron (2), the up end of roof (4) corresponds the up end central point department of putting of every noise elimination inserted sheet (5) and inserts limited finished piece.

2. The square vent noise abatement silencer assembly of claim 1, wherein: it is adjacent be the equidistance between the noise elimination inserted sheet (5) and arrange, it is adjacent form noise elimination passageway (12) between noise elimination inserted sheet (5), a plurality of the front and back of noise elimination passageway (12) form sound business turn over district (11) respectively.

3. The square vent noise abatement silencer assembly of claim 1, wherein: the retaining member comprises top bolts (7) penetrating through corners of the upper end faces of the top plates (4), the lower ends of the top bolts (7) located on two sides penetrate through the upper end faces of the first side plate (1) and the second side plate (3) respectively, and the top bolts (7) are in threaded fit with the first side plate (1) and the second side plate (3).

4. The square vent noise abatement silencer assembly of claim 1, wherein: the limiting piece comprises a central shaft screw rod (6) penetrating through the upper end face of the top plate (4) and a central shaft nut (8) fixedly embedded in the center of the upper end face of the silencing insertion piece (5), and the central shaft screw rod (6) penetrates through the inner side of the central shaft nut (8) and is in threaded fit with the central shaft nut.

5. The square vent noise abatement silencer assembly of claim 1, wherein: noise elimination inserted sheet (5) are including filling sound absorbing material (10) in the inboard, noise elimination inserted sheet (5) are the metal material, the both sides surface of noise elimination inserted sheet (5) runs through and has seted up a plurality of through-hole.