CN218269547U - Noise reduction and absorption structure of static pressure bin - Google Patents

Abstract

The utility model discloses a static pressure storehouse is fallen and is fallen sound structure of inhaling that makes an uproar relates to static pressure storehouse technical field, including the storehouse body, all install fixed otter board on the inside wall of the storehouse body, a plurality of through-holes have been seted up on the fixed otter board, fixed otter board with install the abatvoix between the storehouse body, be located two of storehouse body top side and bottom side rotate through two pivot symmetries on the fixed otter board and install two movable otter boards, two the activity otter board all is equipped with the inner chamber and installs and inhale the sound cotton. The utility model discloses an at two activity otter boards of internal setting in storehouse, when the air current is great, two activity otter boards overcome elastic mechanism's elasticity and are close to each other, increase the cross sectional area in the storehouse body, do not influence the air current and flow, and when the air current is less, two activity otter boards open under elastic mechanism's spring action, reduce the cross sectional area in the storehouse body, increase simultaneously with the positive windward area of air current, play better sound noise reduction effect of inhaling.

Description

Noise reduction and absorption structure of static pressure bin

Technical Field

The utility model belongs to the technical field of static pressure storehouse structure technique and specifically relates to a noise reduction and sound absorption structure in static pressure storehouse is related to.

Background

The static pressure cabin is a necessary accessory for reducing dynamic pressure, increasing static pressure, stabilizing air flow and reducing air flow vibration of an air supply system, can make the air supply effect more ideal, and is a device which can allow air flow to pass and can effectively prevent or weaken sound energy from spreading outwards.

Among the prior art, static pressure storehouse is mostly fixed knot structure, and its cross sectional area size is also fixed, and when the air current size changed in the pipeline, because of its cross sectional area is unchangeable for the absorption effect to the noise is the same, and the availability factor of pipeline is lower relatively, therefore, we have disclosed a static pressure storehouse and have fallen to make an uproar and inhale sound structure and satisfy people's demand.

SUMMERY OF THE UTILITY MODEL

An object of the application is to provide a static pressure storehouse is fallen and is fallen sound structure of inhaling to the static pressure storehouse cross sectional area who provides is fixed in solving above-mentioned background art, problem that pipeline availability factor is low.

In order to achieve the above purpose, the present application provides the following technical solutions: the utility model provides a static pressure storehouse is fallen and is made an uproar and inhale sound structure, includes the storehouse body, all install fixed otter board on the inside wall of the storehouse body, a plurality of through-holes have been seted up on the fixed otter board, fixed otter board with install the abatvoix between the storehouse body, be located two of storehouse body top side and bottom side two install two movable otter board, two through two pivot symmetry rotation on the fixed otter board activity otter board all is equipped with the inner chamber and installs and inhale the sound cotton, two the pivot is close to each other and sets up two the one end of activity otter board, two the elastic mechanism is installed to the other end of activity otter board, two the activity otter board is the splayed and is located the intermediate position of the storehouse body, two activity otter boards rotate through the pivot, change the internal cross sectional area of storehouse, and when the air current is great, two activity otter boards overcome the elasticity of elastic mechanism and are close to each other, increase the cross sectional area of the storehouse body, do not influence the air current and flow, and when the air current is less, two activity otter boards open under the elasticity effect of making an uproar, reduce the cross sectional area of the storehouse body, increase simultaneously and fall the effect of making an uproar with the front of playing better.

Furthermore, the elastic mechanism comprises two springs and fixed columns, the bottom ends of the fixed columns are installed on the fixed screen plates located on the bottom side of the bin body, one ends of the two springs are installed on two sides, far away from the fixed columns, of the two springs, the other ends of the two springs are installed on two sides of the two movable screen plates, one ends of the two fixed screen plates rotate around the rotating shafts, and after the elastic force of the springs reaches balance, the two fixed screen plates are at a certain angle.

Further, arc-shaped slide rails are arranged on the top sides of the fixed screen plates located on the bottom side of the bin body, notches are formed in the bottom sides of the two movable screen plates, rollers are arranged on the positions, located on the notches, of the two movable screen plates, the two rollers are slidably arranged in the arc-shaped slide rails, the rollers slide in the arc-shaped slide rails, the two ends of each movable screen plate can be balanced in stress, friction force is reduced when the movable screen plates rotate, meanwhile, the friction mode when the movable screen plates rotate is rolling friction, and abnormal sound generated when the movable screen plates rotate can be reduced.

Further, the side shield is all installed at the both ends of arc slide rail, and the side shield can be any one among the prior art stereoplasm flat board, like the metal flat board, the side shield with the gyro wheel is corresponding, can prevent that the elasticity that the spring produced is too big, causes movable otter board pivoted instantaneous speed too big, leads to gyro wheel slippage arc slide rail, plays certain guard action.

Furthermore, the buffer blocks are arranged on the sides, close to each other, of the two movable screen plates, and can prevent the two movable screen plates from being close to each other due to the fact that the rotating speed is too high and the collision is caused to generate abnormal sound.

Furthermore, a connecting layer is arranged at one end, close to the rotating shaft, of each of the two movable screen plates, extends from the bottom end of each movable screen plate to the top end of each movable screen plate, and connects one ends of the two movable screen plates together to form a complete cambered surface, so that the two movable screen plates can better face the wind, and the airflow can better contact with the movable screen plates.

Further, flange edges are installed at two ends of the bin body, a plurality of mounting holes are formed in the flange edges, the flange edges are arranged, the air flow pipeline can be conveniently connected, and fasteners such as bolts are used for rapidly connecting the air flow pipeline with the static pressure bin through the mounting holes.

To sum up, the utility model discloses a technological effect and advantage:

1. the utility model discloses in, through two activity otter boards at the internal setting in storehouse to rotate through the pivot, when the air current is great, two activity otter boards overcome elastic mechanism's elasticity and are close to each other, increase the cross sectional area in the storehouse body, do not influence the air current and flow, when the air current is less, two activity otter boards open under elastic mechanism's elastic action, reduce the cross sectional area in the storehouse body, increase simultaneously with the positive windward area of air current, play better sound absorption noise reduction effect.

2. The utility model discloses in, through installation arc slide rail, make the gyro wheel slide in arc slide rail, can make the both ends atress balance of activity otter board, reduce frictional force when rotating simultaneously, and then reduce the abnormal sound that produces when the activity otter board rotates, the buffer block can prevent that the too big collision that causes of rotational speed when two activity otter boards are close to each other from producing the abnormal sound, the connecting layer links together the one end of two activity otter boards, form a complete cambered surface, make the air current better contact with the activity otter board.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic perspective view of a static pressure cabin in this embodiment.

Fig. 2 is a schematic perspective view of another perspective structure of the static pressure cabin in this embodiment.

Fig. 3 is a partially enlarged structural view of a region a in fig. 2.

Fig. 4 is a sectional view of the static pressure silo in this embodiment.

Description of reference numerals:

1. a bin body; 2. a flange edge; 3. fixing the screen plate; 4. a through hole; 5. a movable screen plate; 6. a connection layer; 7. a buffer block; 8. a spring; 9. an arc-shaped slide rail; 10. fixing the column; 11. a roller; 12. a side dam; 13. a sound-absorbing panel; 14. a rotating shaft; 15. mounting holes; 16. sound-absorbing cotton; 17. and (4) a notch.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example (b): referring to fig. 1-4, a noise reduction and absorption structure of a static pressure cabin comprises a cabin body 1, the cabin body 1 can be any straight thin sheet frame body in the prior art, such as a square iron sheet frame, fixed screen plates 3 are all installed on the inner side wall of the cabin body 1, a plurality of through holes 4 are arranged on the fixed screen plates 3, an acoustic board 13 is installed between the fixed screen plates 3 and the cabin body 1, air flow in the cabin body 1 shuttles through the through holes 4 on the fixed screen plates 3 around to disturb the air flow, the noise reduction effect is achieved through the sound absorption of the acoustic board 13, rotary holes are correspondingly arranged on the two fixed screen plates 3 positioned on the top side and the bottom side of the cabin body 1, two movable screen plates 5 are symmetrically and rotatably installed through two rotary shafts 14 in the rotary holes, the two movable screen plates 5 are both provided with inner cavities and are provided with acoustic absorbent cotton 16, the movable screen plates 5 disturb the air flow, simultaneously inhale the sound through inhaling the sound cotton 16 and fall and make an uproar, two pivot 14 are close to each other and set up the one end at two movable otter board 5, elastic mechanism is installed to two movable otter board 5's the other end, two movable otter board 5 are the splayed and lie in the intermediate position of the storehouse body 1, two movable otter board 5 rotate through pivot 14, change the cross sectional area in the storehouse body 1, when the air current is great, two movable otter board 5 overcome elastic mechanism's elasticity and are close to each other, increase the cross sectional area of the storehouse body 1, do not influence the air current and flow, when the air current is less, two movable otter board 5 open under elastic mechanism's elasticity effect, reduce the cross sectional area of the storehouse body 1, increase simultaneously with the positive windward area of air current, play better sound absorption noise reduction effect.

As shown in fig. 2 and 3, the elastic mechanism includes two springs 8 and a fixed column 10, the spring 8 can be any one of the elastic members in the prior art, such as a compression spring, the bottom end of the fixed column 10 is installed on the fixed screen 3 located at the bottom side of the bin body 1, the spring 8 naturally extends to make the two fixed screen 3 away from each other, one end of the two springs 8 is installed at the two sides away from the fixed column 10, the other end is installed at the two sides of the two movable screen 5, one end of the two fixed screen 3 rotates around the rotating shaft 14, and after the elastic force of the spring 8 reaches balance, the two fixed screen 3 is at a certain angle; the top sides of the fixed screen plates 3 positioned at the bottom side of the bin body 1 are fixedly provided with arc-shaped slide rails 9 in any mode, if the fixed screen plates are installed in a bonding mode, the bottom sides of the two movable screen plates 5 are provided with notches 17, the positions of the two movable screen plates 5 positioned at the notches 17 are both provided with idler wheels 11, the two idler wheels 11 are installed in the arc-shaped slide rails 9 in a rolling mode, the idler wheels 11 slide in the arc-shaped slide rails 9, so that the two ends of the movable screen plates 5 are stressed in a balanced mode, meanwhile, the friction force is reduced during rotation, meanwhile, the friction mode during rotation is rolling friction, and abnormal sound generated during rotation of the movable screen plates 5 can be reduced; side guards 12 are installed at both ends of the arc-shaped slide rail 9, the side guards 12 can be any hard flat plate in the prior art, such as a metal flat plate, the side guards 12 correspond to the rollers 11, so that the elastic force generated by the springs 8 is prevented from being too large, the instantaneous speed of the rotation of the movable mesh plate 5 is caused to be too large, the rollers 11 are led to slip from the arc-shaped slide rail 9, and a certain protection effect is achieved.

As shown in fig. 2 and 4, the buffer blocks 7 are installed on the sides of the two movable net plates 5 close to each other, the buffer blocks 7 can be any buffer in the prior art, such as buffer sponge, and the buffer blocks 7 can prevent the two movable net plates 5 from colliding with each other due to overlarge rotating speed when the two movable net plates are close to each other to generate abnormal sound; as shown in fig. 1 and 4, a connecting layer 6 is installed at one end of each of the two movable mesh plates 5 close to the rotating shaft 14, the connecting layer 6 is made of a soft flexible material, such as a nylon cloth sheet, the connecting layer 6 extends from the bottom end of each of the movable mesh plates 5 to the top end of each of the movable mesh plates 5, and the connecting layer 6 connects one ends of the two movable mesh plates 5 together to form a complete arc surface, so that the air flow can better face the wind and can better contact with the movable mesh plates 5; flange limit 2 has all been installed at the both ends of the storehouse body 1, has seted up a plurality of mounting holes 15 on the flange limit 2, and through the setting of flange limit 2, the connection air flow pipeline that can be convenient uses the fastener like the bolt to be connected air flow pipeline with the static pressure storehouse through mounting hole 15 fast.

The utility model discloses theory of operation:

through set up two activity otter boards 5 in the storehouse body 1, two activity otter boards 5 are the splayed and lie in the intermediate position of the storehouse body 1, two activity otter boards 5 rotate through pivot 14, change the cross sectional area in the storehouse body 1, when the air current is great, two activity otter boards 5 are close to each other to the elasticity of overcoming elastic mechanism, increase the cross sectional area of the storehouse body 1, do not influence the air current and flow, when the air current is less, two activity otter boards 5 open under elastic mechanism's elastic action, reduce the cross sectional area of the storehouse body 1, increase simultaneously with the positive windward area of air current, play better sound absorption noise reduction effect.

Through installation arc slide rail 9, make gyro wheel 11 slide in arc slide rail 9, can make the both ends atress balance of activity otter board 5, reduce frictional force when rotating simultaneously, the friction mode when will rotating simultaneously is rolling friction, can reduce the abnormal sound that produces when activity otter board 5 rotates, buffer block 7 can prevent that the too big collision that causes of rotational speed when two activity otter boards 5 are close to each other and produce the abnormal sound, the articulamentum 6 links together two one ends of activity otter board 5, form a complete cambered surface, windward that can be better, make the air current better contact with activity otter board 5.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims (7)

1. The utility model provides a static pressure storehouse is fallen and is made an uproar and inhale sound structure, includes storehouse body (1), its characterized in that: all install fixed otter board (3) on the inside wall of the storehouse body (1), a plurality of through-holes (4) have been seted up on fixed otter board (3), fixed otter board (3) with install abatvoix (13) between the storehouse body (1), be located two of the storehouse body (1) top side and bottom side rotate through two pivot (14) symmetries between fixed otter board (3) and install two activity otter boards (5), two activity otter board (5) all are equipped with the inner chamber and install and inhale sound cotton (16), two pivot (14) are close to each other and set up two the one end of activity otter board (5), two the elastic mechanism is installed to the other end of activity otter board (5), two activity otter board (5) are the splayed and are located the intermediate position of the storehouse body (1).

2. The noise reduction and absorption structure of the static pressure cabin according to claim 1, wherein: the elastic mechanism comprises two springs (8) and fixed columns (10), the bottom ends of the fixed columns (10) are installed on the fixed screen plates (3) located on the bottom side of the bin body (1), one ends of the two springs (8) are installed on two sides, far away from the fixed columns (10), of the two springs, and the other ends of the two springs are installed on two sides of the two movable screen plates (5).

3. The noise reduction and absorption structure of the static pressure cabin according to claim 1, wherein: arc-shaped slide rails (9) are arranged on the top sides of the fixed screen plates (3) on the bottom sides of the bin body (1), gaps (17) are formed in the bottom sides of the two movable screen plates (5), idler wheels (11) are arranged on the positions, located in the gaps (17), of the two movable screen plates (5), and the two idler wheels (11) are slidably arranged in the arc-shaped slide rails (9).

4. The noise reduction and absorption structure of the static pressure cabin according to claim 3, wherein: side baffles (12) are installed at two ends of the arc-shaped sliding rail (9), and the side baffles (12) correspond to the rollers (11).

5. The noise reduction and absorption structure of the static pressure cabin according to claim 1, characterized in that: and buffer blocks (7) are arranged on the sides, close to each other, of the two movable mesh plates (5).

6. The noise reduction and absorption structure of the static pressure cabin according to claim 1, wherein: and one end of each of the two movable mesh plates (5) close to the rotating shaft (14) is provided with a connecting layer (6), and the connecting layer (6) extends from the bottom end of each movable mesh plate (5) to the top end of each movable mesh plate (5).

7. The noise reduction and absorption structure of the static pressure cabin according to claim 1, wherein: flange edges (2) are installed at two ends of the bin body (1), and a plurality of installation holes (15) are formed in the flange edges (2).

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