CN217652971U

CN217652971U - Multi-cavity reactive noise eliminator

Info

Publication number: CN217652971U
Application number: CN202221263884.6U
Authority: CN
Inventors: 张玉麟; 张玉敏
Original assignee: Beijing Wanxunda Acoustics Equipment Co ltd
Current assignee: Beijing Wanxunda Acoustics Equipment Co ltd
Priority date: 2022-05-24
Filing date: 2022-05-24
Publication date: 2022-10-25
Anticipated expiration: 2032-05-24

Abstract

The utility model relates to a multicavity room resistance noise eliminator belongs to the field of resistance silencer, including the device main part, the inside cavity that is formed with of device main part is equipped with noise elimination subassembly in the cavity, and device main part one end is equipped with the dust blowing mouth with the cavity intercommunication, and the device main part other end is equipped with the dust absorption mouth with the cavity intercommunication, and the one end that the device main part was kept away from to the dust blowing mouth and the one end that the device main part was kept away from to the dust absorption mouth are connected with the end cover through screw-thread fit's mode respectively. This application has the effect of the clean noise elimination subassembly of staff of being convenient for.

Description

Multi-cavity reactive noise eliminator

Technical Field

The application relates to the technical field of silencers, in particular to a multi-cavity reactive silencing device.

Background

The reactive muffler is a muffler which causes impedance change in the process of sound transmission at an abrupt change position of the section of a pipeline or a bypass resonant cavity and the like to generate reflection and interference of sound energy so as to reduce the sound energy radiated outwards by the muffler to achieve the purpose of sound attenuation, and the perforated muffler is one of the reactive mufflers.

Most of the existing perforated mufflers are provided with a plurality of silencing components with micropores with diameters not larger than 1 millimeter, and the silencing components divide a cavity inside the muffler into a plurality of chambers, so that the effect of eliminating target frequency band noise is achieved.

In view of the above-mentioned related technologies, the inventor believes that, because the diameter of the micropores on the noise elimination assembly for eliminating noise in the existing perforated muffler is small, and the air flow generated by the blower, the air compressor and other devices may carry dust, the dust generated in the air flow adheres to the micropores of the noise elimination assembly and blocks the micropores of the noise elimination assembly, thereby affecting the noise elimination effect.

SUMMERY OF THE UTILITY MODEL

In order to facilitate workers to clean dust attached to the micropores, the multi-chamber resistance muffler device is provided.

The application provides a multicavity room resistance noise eliminator adopts following technical scheme:

the utility model provides a multicavity room resistance noise eliminator, includes the device main part, and the device main part is inside to be formed with the cavity, is equipped with noise elimination subassembly in the cavity, and device main part one end is equipped with the dust blowing mouth with the cavity intercommunication, and the device main part other end is equipped with the dust absorption mouth with the cavity intercommunication, and the one end that the device main part was kept away from to the dust blowing mouth and the one end that the device main part was kept away from to the dust absorption mouth are connected with the end cover through screw-thread fit's mode respectively.

By adopting the technical scheme, the dust blowing port is connected with the blowing device after the end cover is uncovered, the dust suction port is connected with the dust suction device after the end cover is uncovered, the blowing device such as a fan generates air flow, the generated air flow enters the cavity of the device main body through the dust blowing port so as to blow dust attached to the noise elimination assembly, then the dust suction device is started to adsorb the dust floating in the cavity through the dust suction port, and the effect of removing the dust attached to the micropores of the noise elimination assembly is achieved.

Optionally, one end of the device main body close to the dust suction port is fixedly connected with an input flange, one end of the device main body close to the dust blowing port is fixedly connected with an output flange, the input flange comprises a first flange plate and a second flange plate which are parallel to each other, the first flange plate is used for being connected with the device main body in a detachable mode, a connecting pipe is clamped between the first flange plate and the second flange plate, one end of the connecting pipe is fixedly connected with the first flange plate, the other end of the connecting pipe is fixedly connected with the second flange plate, and one surface, away from the connecting pipe, of the first flange is connected with the noise elimination assembly.

Through adopting above-mentioned technical scheme, the input flange is used for the air current to enter into the cavity, the input flange includes the first flange board that is connected through the detachable mode with the device main part and is used for connecting the second flange board of other equipment, and press from both sides between first flange board and the second flange board and be equipped with the connecting pipe, make produced air current of other equipment can enter into the cavity through the input flange, and first flange board is connected through the detachable mode with the device main part, make first flange board can pull down from the device main part, make things convenient for the staff to change the input flange.

Optionally, the noise elimination assembly comprises a first noise elimination pipe and a second noise elimination pipe, a plurality of micropores are formed in the first noise elimination pipe and the second noise elimination pipe respectively, the first noise elimination pipe penetrates through the second noise elimination pipe, two ends of the second noise elimination pipe are fixedly connected with the inner wall of the cavity respectively, one end of the first noise elimination pipe is fixedly connected with the first flange plate, and the other end of the first noise elimination pipe is abutted to the inner wall of the cavity.

Through adopting above-mentioned technical scheme, first muffler pipe wears to locate in the second muffler pipe, make between first muffler pipe and the second muffler pipe, and form a plurality of cavities between second muffler pipe and the cavity inner wall, make the noise elimination effect of noise elimination subassembly better, and first muffler pipe one end and first flange fixed connection, the other end and the cavity inner wall butt of first muffler pipe, make the staff can lift first flange board off the back from the device main part, can take out first muffler pipe, make things convenient for the staff to clean first muffler pipe.

Optionally, the first flange plate and the second flange plate are both provided with a rotating groove circumferentially distributed around the axis of the connecting pipe.

Through adopting above-mentioned technical scheme, the rotation groove around connecting pipe axis circumference branch on first flange board and the second flange board, make the input flange rotate when connecting, thereby it rotates to drive first muffler pipe, make microporous position stagger on first muffler pipe and the second muffler pipe, the time of extension sound reflection between first muffler pipe and second muffler pipe, reach better noise elimination effect, and the rotation groove then plays and makes the angle of input flange when rotating more nimble.

Optionally, the input flange is also provided with rotating grooves circumferentially distributed around the axis of the connecting pipe.

Through adopting above-mentioned technical scheme, when the input flange blocked, the staff can rotate the output flange through loosening being connected of input flange and device main part, drives the device main part and rotates, and then makes the second muffler pipe rotate, realizes that micropore's position on the second muffler pipe and micropore's position on the first muffler pipe stagger each other, reaches better noise elimination effect.

Optionally, an insertion groove for inserting and matching with the first muffling pipe is arranged at a position, corresponding to the first muffling pipe, of the inner wall of the cavity, which is close to the inner wall of the output flange.

Through adopting above-mentioned technical scheme, the inserting groove plays spacing effect to first muffler pipe.

Optionally, a cushion is bonded in the insertion groove and used for being abutted against the first muffling pipe.

Through adopting above-mentioned technical scheme, the cushion comprises the sound cotton of inhaling, when filling clearance between first muffler pipe and the inserting groove, also plays the effect of eliminating the noise.

Optionally, a gasket is interposed between the first flange plate and the device body, one surface of the gasket abuts against the first flange plate, and the other surface of the gasket abuts against a surface of the device body.

Through adopting above-mentioned technical scheme, sealed the clearance that fills up and be used for between first flange board of shutoff and the device main part increases the leakproofness between first flange board and the device main part.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the dust blowing port and the dust suction port which are respectively communicated with the cavity are arranged on the device main body, so that a worker can clean the noise elimination component in the cavity through the dust blowing port and the dust suction port, and the effect of facilitating the worker to clean is achieved;

2. through rotating the input flange, drive first muffler pipe and rotate for micropore's position staggers each other on first muffler pipe and the micropore's on the second muffler pipe position, plays the effect that promotes the noise elimination effect.

Drawings

FIG. 1 is a schematic perspective view of a multi-chamber reactive muffler assembly according to an embodiment of the present application;

FIG. 2 is a schematic view of the internal structure of FIG. 1;

fig. 3 is a partially enlarged schematic view of a in fig. 2.

Description of the reference numerals: 1. a device main body; 2. a cavity; 3. a dust blowing port; 4. a dust suction port; 5. an end cap; 6. an input flange; 7. an output flange; 8. a first flange plate; 9. a second flange plate; 10. a connecting pipe; 11. a first muffler pipe; 12. a second muffler pipe; 13. micropores; 14. a rotating groove; 15. inserting grooves; 16. a soft cushion; 17. and a gasket.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses multi-chamber resistance noise eliminator, refer to fig. 1-2, including device main part 1, device main part 1 is inside to be formed with cavity 2, 1 length direction's of device main part one end is equipped with input flange 6, 1 length direction's of device main part the other end is then connected with output flange 7 through the welded mode, wherein input flange 6 includes first flange board 8 and second flange board 9, be equipped with connecting pipe 10 between first flange board 8 and the second flange board 9, the both ends of connecting pipe 10 are through welded mode respectively with first flange board 8 and second flange board 9 fixed connection.

All there is rotation groove 14 around the axis circumference distribution of connecting pipe 10 on first flange board 8 and the second flange board 9, and the flange board on the output flange 7 is equipped with rotation groove 14 around the axis circumference distribution of connecting pipe 10 equally, connecting bolt passes rotation groove 14 on the first flange board 8 and realizes dismantling between first flange board 8 and the device main part 1 and be connected, be equipped with sealed the pad 17 between first flange board 8 and device main part 1, sealed pad 17 is used for the gap between the first flange board 8 of shutoff and the device main part 1, and second flange board 9 is then to be used for connecting from the outside other equipment of device main part 1 toward the inside air current of carrying of device main part 1.

And the end of the device body 1 close to the input flange 6 is provided with a dust blowing port 3 communicated with the cavity 2, the end of the device body 1 close to the output flange 7 is provided with a dust suction port 4 communicated with the cavity 2, and one end of the dust blowing port 3 far away from the device body 1 and one end of the dust suction port 4 far away from the device body 1 are both connected with an end cover 5 used for placing external sundries into the cavity 2 in a threaded fit mode.

Referring to fig. 2-3, a first muffling pipe 11 and a second muffling pipe 12 are arranged inside the cavity 2, a plurality of through holes are respectively formed in the first muffling pipe 11 and the second muffling pipe 12, the first muffling pipe 11 and the second muffling pipe 12 are coaxial, the first muffling pipe 11 penetrates through the second muffling pipe 12, a plurality of chambers for muffling are formed in the cavity 2, the length directions of the first muffling pipe 11 and the second muffling pipe 12 are consistent with the length direction of the device main body 1, two ends of the second muffling pipe 12 are respectively fixedly connected with the inner wall of the cavity 2, an insertion groove 15 is formed in the inner wall of one end of the cavity 2 close to the output flange 7, one end of the first muffling pipe 11 close to the input flange 6 is fixedly connected with the first flange plate 8, and one end of the first muffling pipe 11 far away from the input flange 6 abuts against the insertion groove 15.

Inserting groove 15 plays spacing effect to first muffler pipe 11, and it has cushion 16 still to bond in inserting groove 15 moreover, and cushion 16 comprises inhaling the sound cotton, and cushion 16 and first muffler pipe 11 butt have filled the clearance between first muffler pipe 11 and inserting groove 15, and simultaneously, cushion 16 also can play certain noise elimination effect.

When a worker unscrews the connecting bolt passing through the first flange plate 8, the input flange 6 can be rotated to drive the first muffling pipe 11 to rotate, so that the positions of the micropores 13 on the first muffling pipe 11 and the positions of the micropores 13 on the second muffling pipe 12 are staggered, the time for reflecting noise generated by airflow between the first muffling pipe 11 and the second muffling pipe 12 is longer, and a better muffling effect is achieved; similarly, the staff also can rotate the output flange 7 by taking down the connecting bolt on the first flange plate 8, and then drive the device main body 1 to rotate, and the second muffling pipe 12 rotates along with the rotation of the device main body 1 because of being fixedly connected with the inner wall of the cavity 2, thereby realizing that the positions of the micropores 13 on the second muffling pipe 12 are staggered with the positions of the micropores 13 on the first muffling pipe 11, and achieving the same effect as the rotation of the input flange 6.

The implementation principle of the multi-cavity reactive muffler in the embodiment of the application is as follows: when a worker stops operating the multi-chamber reactive noise elimination device in the application, the end cover 5 for plugging the dust suction port 4 and the dust blowing port 3 is taken down, the air outlet pipeline of the fan is connected to the dust blowing port 3, the dust suction pipeline of the dust collector is connected to the dust suction port 4, wind power generated when the fan operates enters the cavity 2 through the air outlet pipeline, and dust attached to the first silencing pipe 11 and the second silencing pipe 12 and blown by the fan is sucked out through the dust suction port 4 by suction force generated when the dust collector operates, so that the first silencing pipe 11 and the second silencing pipe 12 are cleaned; similarly, the worker can take out the first muffling pipe 11 from the cavity 2 by unscrewing the connecting bolts on the first flange plate 8, and then clean the first muffling pipe 11 and the second muffling pipe 12, respectively.

The above are preferred embodiments of the present application, and the scope of protection of the present application is not limited thereto, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A multi-chamber resistance noise eliminator which characterized in that: including device main part (1), device main part (1) inside is formed with cavity (2), be equipped with the noise elimination subassembly in cavity (2), device main part (1) one end be equipped with blow dirt mouth (3) of cavity (2) intercommunication, device main part (1) other end be equipped with dust absorption mouth (4) of cavity (2) intercommunication, blow dirt mouth (3) and keep away from the one end of device main part (1) and dust absorption mouth (4) are kept away from the one end of device main part (1) is connected with end cover (5) through screw-thread fit's mode respectively.

2. A multi-chamber resistive muffler assembly according to claim 1, wherein: device main part (1) is close to the one end fixedly connected with input flange (6) of dust absorption mouth (4), device main part (1) is close to blow the one end fixedly connected with output flange (7) of dirt mouth (3), input flange (6) are including first flange board (8) and second flange board (9) that are parallel to each other, first flange board (8) be used for with device main part (1) is connected, first flange board (8) and it is equipped with connecting pipe (10) to press from both sides between second flange board (9), connecting pipe (10) one end with first flange board (8) fixed connection, connecting pipe (10) other end with second flange board (9) fixed connection, first flange board (8) keep away from with the one side of connecting pipe (10) with the noise elimination subassembly is connected.

3. A multi-chamber reactive muffler assembly according to claim 2, wherein: the noise elimination subassembly includes first muffler pipe (11) and second muffler pipe (12), first muffler pipe (11) and be equipped with a plurality of micropores (13) on second muffler pipe (12) respectively, first muffler pipe (11) are coaxial to be worn to locate in second muffler pipe (12), second muffler pipe (12) both ends respectively with cavity (2) inner wall fixed connection, first muffler pipe (11) one end with first flange board (8) fixed connection, first muffler pipe (11) other end with the inner wall butt of cavity (2).

4. A multi-chamber reactive muffler assembly according to claim 3, wherein: and the first flange plate (8) and the second flange plate (9) are respectively provided with a rotating groove (14) which is distributed around the axis circumference of the connecting pipe (10).

5. The multi-chamber resistive muffler assembly according to claim 4, wherein: the input flange (6) is also provided with the rotating groove (14) around the axis of the connecting pipe (10).

6. A multi-chamber resistive muffler assembly according to claim 3, wherein: and an inserting groove (15) which is used for being matched with the first silencing pipe (11) in an inserting manner is formed in the position, corresponding to the first silencing pipe (11), of the inner wall of the cavity (2), close to the inner wall of the output flange (7).

7. A multi-chamber reactive muffler assembly according to claim 6, wherein: a soft cushion (16) is bonded in the insertion groove (15), and the soft cushion (16) is abutted to the first silencing pipe (11).

8. A multi-chamber resistive muffler assembly according to claim 2, wherein: first flange board (8) and it is equipped with sealed pad (17) to press from both sides between device main part (1), sealed pad (17) one side with first flange board (8) butt, sealed pad (17) another side with the surface butt of device main part (1).