CN221323697U

CN221323697U - Noise reduction muffler with dustproof function

Info

Publication number: CN221323697U
Application number: CN202323483645.9U
Authority: CN
Inventors: 蒋剑强
Original assignee: Jiangsu Xuncheng Machinery Co ltd
Current assignee: Jiangsu Xuncheng Machinery Co ltd
Priority date: 2023-12-20
Filing date: 2023-12-20
Publication date: 2024-07-12
Anticipated expiration: 2033-12-20

Abstract

The utility model relates to a noise reduction muffler with a dustproof function, which comprises a cylinder body, a first baffle plate, a middle baffle plate and a second baffle plate, wherein the first baffle plate, the middle baffle plate and the second baffle plate are arranged in the cylinder body at intervals, an air inlet pipe and an air outlet pipe are respectively arranged at two ends of the cylinder body, one end of the air inlet pipe extending into the cylinder body is connected with a dustproof device, the dustproof device comprises a dustproof cover, one end of the dustproof cover is provided with a through hole communicated with the air inlet pipe, the other end of the dustproof cover is provided with an air permeable surface for air outlet, a first silencing pipe is arranged between the first baffle plate and the middle baffle plate in a penetrating way, a second silencing pipe is arranged between the middle baffle plate and the second baffle plate in a penetrating way, and expansion sections with enlarged sections are arranged on the first silencing pipe and the second silencing pipe. The utility model mainly aims to provide the noise reduction muffler with the dustproof function, which has the advantages of remarkable and reliable noise elimination effect, and simultaneously can prevent dust and dust so as to ensure the noise elimination stability.

Description

Noise reduction muffler with dustproof function

Technical Field

The present utility model relates to a muffler, and more particularly, to a noise reduction muffler with dust-proof function.

Background

The muffler means that for the air flow pipeline with noise transmission, the noise in the pipeline can be attenuated or reflected back by using the pipeline with sound absorption lining and elbow or using the noise reduction devices such as the pipeline with suddenly changed sectional area and other discontinuous acoustic impedance. The former is called resistive muffler, and the latter is called resistive muffler, and there is also impedance composite muffler. When the muffler works, high-pressure air flow needs to enter the muffler cylinder from the air inlet pipe and is discharged from the air outlet pipe after being treated. Because a small amount of dust or impurities are contained in the air flow, the dust is easy to accumulate in the muffler after the muffler works for a long time, so that the muffler is difficult to clean and the noise elimination effect is easy to influence.

Disclosure of utility model

In order to overcome the defects of the prior art, the utility model aims to provide the noise reduction muffler with the dustproof function, which has the advantages of remarkable and reliable noise elimination effect, and simultaneously can prevent dust and dust so as to ensure the noise elimination stability.

In order to solve the problems, the technical scheme adopted by the utility model is as follows:

The utility model provides a noise reduction silencer with dustproof function, includes the barrel and installs in the barrel and first baffle, intermediate baffle and the second baffle that the interval distributes, the barrel both ends are equipped with intake pipe and outlet duct respectively, stretch into the inside one end of barrel in the intake pipe and be connected with dust keeper, dust keeper includes the dust cover, dust cover one end is equipped with the through-hole that is linked together with the intake pipe, the dust cover other end is equipped with the breathable surface that is used for giving vent to anger, run through between first baffle and the intermediate baffle and be equipped with first sound-absorbing tube, run through between intermediate baffle and the second baffle and be equipped with the second sound-absorbing tube, all be equipped with the expansion section of cross-section increase on first sound-absorbing tube and the second sound-absorbing tube.

Further, the first sound-absorbing pipe is sequentially divided into an inlet section, a first expansion section, a sound-absorbing section, a second expansion section and an outlet section along the direction from the air inlet pipe to the air outlet pipe, the sections of the inlet section, the sound-absorbing section and the outlet section are identical in size, the section sizes of the first expansion section and the second expansion section are larger than the section size of the sound-absorbing section, and the first sound-absorbing pipe and the second sound-absorbing pipe are identical in structure.

Further, a plurality of ventilation holes which are uniformly distributed at intervals are respectively arranged on the side wall of the silencing section, the ventilation surface and the middle partition plate.

Further, the dustproof device further comprises a connecting pipe, one end of the connecting pipe is clamped outside the through hole of the dustproof cover, and the other end of the connecting pipe is detachably arranged at the end part of the air inlet pipe.

Further, the first expansion section and the second expansion section are symmetrically arranged, and the side wall of the first expansion section is in a circular arc structure on the surface axially cut along the first silencing pipe.

Further, the ventilation surface is an inclined surface.

Further, the dust cover bottom is the dust collection groove.

Compared with the prior art, the utility model has the beneficial effects that: according to the utility model, through optimizing the internal structure of the cylinder, the overall silencing effect is greatly improved, the multiple flow control and reflection attenuation of air flow can be realized, and the air flow audio frequency is changed step by step, so that the noise generated by the air flow discharged from the silencer accords with the national noise sanitary standard of industrial enterprises, and is even greatly lower than the standard; meanwhile, the detachable dust-proof device is additionally arranged at the air inlet pipe, so that dust and dust can be effectively prevented, and the dust-proof device can be conveniently detached for cleaning.

Drawings

FIG. 1 is a schematic view of a noise reduction muffler with dust prevention function according to the present utility model;

FIG. 2 is a schematic view of a dust-proof device in a noise-reducing muffler with dust-proof function according to the present utility model;

Wherein, 1, a cylinder; 11. an air inlet pipe; 12. an air outlet pipe; 13. a first sound deadening chamber; 14. a second sound deadening chamber; 15. a third sound deadening chamber; 16. a fourth sound deadening chamber; 2. a first separator; 3. a middle partition plate; 4. a second separator; 5. a first sound-reducing pipe; 51. an inlet section; 52. a first expansion section; 53. a sound attenuation section; 54. a second expansion section; 55. an outlet section; 6. a dust-proof device; 61. a dust cover; 611. An air outlet surface; 612. a vent hole; 62. a bayonet; 63. A dust collection tank; 64. a connecting pipe; 8. and a second sound-reducing pipe.

Detailed Description

The utility model is described in further detail below with reference to the drawings and the detailed description.

In the description of the technical solution of the present utility model, some azimuth terms, such as "front", "rear", "upper", "lower", "top", "bottom", "inner", "outer", etc., are used for clearly describing the technical features of the present utility model, and are all according to the azimuth of the drawings of the present utility model.

Examples

As shown in fig. 1, the noise reduction muffler with the dustproof function of the embodiment comprises a cylinder 1, and a first partition plate 2, a middle partition plate 3 and a second partition plate 4 which are installed in the cylinder 1 and distributed at intervals, wherein an air inlet pipe 11 and an air outlet pipe 12 are respectively arranged at two ends of the cylinder 1, and the air inlet pipe 11 and the air outlet pipe 12 are respectively communicated with the inside of the cylinder 1 and are used for air inlet and air outlet. The space inside the cylinder body 1 is divided into four chambers by the first baffle 2, the middle baffle 3 and the second baffle 4, namely a first silencing cavity 13, a second silencing cavity 14, a third silencing cavity 15 and a fourth silencing cavity 16, a first silencing pipe 5 is penetrated and arranged between the first baffle 2 and the middle baffle 3, a second silencing pipe 8 is penetrated and arranged between the middle baffle 3 and the second baffle 4, and expansion sections with increased cross sections are arranged on the first silencing pipe 5 and the second silencing pipe 8. In this embodiment, the first sound-absorbing pipe 5 and the second sound-absorbing pipe 8 have the same structure, the first sound-absorbing pipe 5 is sequentially divided into an inlet section 51, a first expansion section 52, a sound-absorbing section 53, a second expansion section 54 and an outlet section 55 along the direction from the air inlet pipe 11 to the air outlet pipe 12, the sections of the inlet section 51, the sound-absorbing section 53 and the outlet section 55 are identical in size, and are rectangular sections, and the section sizes of the first expansion section 52 and the second expansion section 54 are larger than the section size of the sound-absorbing section 53. Specifically, the first expansion section 52 and the second expansion section 54 are symmetrically arranged, and on a surface axially cut along the first silencing tube 5, the side wall of the first expansion section 52 is in a circular arc structure, by adopting the structural design, sound waves firstly enter the first expansion section 52 through the inlet section 51 when transmitted, and enter the silencing section 53 after being reflected and attenuated for many times through the arc-shaped side wall of the first expansion section 52, a plurality of ventilation holes uniformly distributed at intervals are arranged on the side wall of the silencing section 53, so that a part of sound waves are transmitted from the ventilation holes to enter a cavity, and the other part of sound waves enter the second expansion section 54 after entering the silencing section 53, and enter the next cavity after being attenuated by reflection and attenuation through the arc-shaped side wall.

In this embodiment, referring to fig. 1, an inlet section 51 of the first silencing tube 5 is communicated with the first silencing cavity 13, an outlet section 55 is communicated with the third silencing cavity 15, and an air vent on the silencing section 53 is communicated with the second silencing cavity 14; the entry section 51 of second sound-absorbing pipe 8 communicates second amortization chamber 14, the exit section 55 of second sound-absorbing pipe 8 communicates fourth amortization chamber 16, the bleeder vent on the sound-absorbing section 53 of second sound-absorbing pipe 8 communicates third amortization chamber 15 for after sound wave gets into barrel 1 from intake pipe 11 inside, can reach outlet duct 12 department through first sound-absorbing pipe 5 and second sound-absorbing pipe 8, and intake pipe 11, first sound-absorbing pipe 5, second sound-absorbing pipe 8 and outlet duct 12 are crisscross distribution from top to bottom, make sound wave only need after the cavity reflection attenuation weakens and just can continue to transmit next pipeline, thereby further improve the amortization effect. In addition, the middle partition plate 3 of the embodiment is provided with a plurality of ventilation holes which are uniformly distributed at intervals.

In order to prevent dust from entering the inside of the cylinder 1 through the air inlet pipe 11, the dust in the cylinder 1 is accumulated, and the silencing effect is affected. In this embodiment, one end of the air inlet pipe 11 extending into the cylinder 1 is connected with a dust-proof device 6, the dust-proof device 6 includes a dust-proof cover 61, one end of the dust-proof cover 61 is provided with a vent hole 612 communicated with the air inlet pipe 11, the other end of the dust-proof cover 61 is provided with an air outlet surface 611 for air outlet, and by adopting this structural design, sound wave can smoothly pass through the dust-proof cover 61 and enter the cylinder 1. As shown in fig. 2, the dust-proof device 6 further includes a connection pipe 64, one end of the connection pipe 64 is fixedly engaged with the outside of the ventilation hole 612 of the dust-proof cover 61, and the other end of the connection pipe 64 is detachably mounted at the end of the air inlet pipe 11. Specifically, the outer side of the vent hole 612 of the dust cover 61 is provided with a bayonet 62, one end of the connecting pipe 64 is fixedly clamped in the bayonet 62, and the end of the connecting pipe 64 is square, so as to prevent relative rotation between the two, and the specific clamping structure adopts a structure in the prior art, which is not repeated here. The connection pipe 64 is screwed with the end of the intake pipe 11. In the mounting, the connection pipe 64 is screwed to the end of the intake pipe 11, and then the dust cover 61 is fixedly engaged with the end of the connection pipe 64. The installation mode is simple and reliable, and convenient to detach. The air outlet surface 611 is an inclined surface, the included angle between the air outlet surface 611 and the axis of the air inlet pipe 11 is greater than 0, and the included angle between the air outlet surface 611 and the axis of the air inlet pipe 11 is preferably 30-60 degrees in this embodiment. The air outlet surface 611 is provided with a plurality of air holes which are uniformly distributed at intervals, so that the smooth passing of air is convenient. The dust cover 61 has a dust collection groove 63 at the bottom for collecting dust. By adopting the structural design, after the gas enters the gas inlet pipe 11, the gas can enter the cylinder 1 through the gas outlet surface 611, and because of the design of the air holes on the gas outlet surface 611, dust is basically trapped on the gas outlet surface 611 and falls into the dust collecting groove 63 to be collected, so that the probability of the dust entering the cylinder 1 is greatly reduced. After long-term use, the dust accumulated in the dust cover 61 is more, cleaning is needed, otherwise normal air intake is affected, and because the dust-proof device 6 in the embodiment adopts a detachable structural design, the end cover of one end of the cylinder 1, on which the air inlet pipe 11 is mounted, can be detached, then the connecting pipe 64 is screwed down, cleaning can be performed, after cleaning is completed, the connecting pipe 64 is connected to the end part of the air inlet pipe 11 in a threaded manner, and then the end cover is mounted on the cylinder 1.

In addition, in order to further reduce the volume of the cylinder 1, the first partition plate 2 and the second partition plate 4 are designed to be bent, that is, the side on which the first sound-reducing pipe 5 or the second sound-reducing pipe 8 is mounted is a straight side, and the side near the air inlet pipe 11 or the air outlet pipe 12 is a bevel side. By adopting the structural design, the volume of the muffler can be reduced, and the noise reduction effect of the chamber can be further improved due to the irregular shape of the muffler.

According to the noise reduction muffler with the dustproof function, through optimizing the internal structure of the cylinder body 1, the overall noise reduction effect is greatly improved, the multiple flow control and reflection attenuation of air flow can be realized, and the air flow audio frequency is changed step by step, so that noise generated by the air flow discharged from the muffler accords with the national noise sanitary standard of industrial enterprises, and is even greatly lower than the standard; meanwhile, the detachable dust-proof device 6 is additionally arranged at the air inlet pipe 11, so that dust and dust can be effectively prevented, and the dust-proof device can be conveniently detached for cleaning.

It will be apparent to those skilled in the art from this disclosure that various other changes and modifications can be made which are within the scope of the utility model as defined in the appended claims.

Claims

1. Noise reduction muffler with dustproof function, its characterized in that: including barrel (1) and install in barrel (1) and first baffle (2), intermediate baffle (3) and second baffle (4) of interval distribution, barrel (1) both ends are equipped with intake pipe (11) and outlet duct (12) respectively, the one end that stretches into barrel (1) inside on intake pipe (11) is connected with dust keeper (6), dust keeper (6) include dust cover (61), dust cover (61) one end is equipped with air vent (612) that are linked together with intake pipe (11), the dust cover (61) other end is equipped with the face of giving vent to anger (611) that is used for giving vent to anger, run through between first baffle (2) and intermediate baffle (3) and be equipped with first sound-absorbing tube (5), run through between intermediate baffle (3) and second baffle (4) and be equipped with second sound-absorbing tube (8), all be equipped with the expansion section that the cross-section increases on first sound-absorbing tube (5) and the second sound-absorbing tube (8).

2. A noise reduction muffler with dust prevention function according to claim 1, wherein: the utility model discloses a sound-absorbing pipe, including inlet pipe (11), outlet duct (12), first sound-absorbing pipe (5), second sound-absorbing pipe (8), inlet section (51), first expansion section (52), sound-absorbing section (53), second expansion section (54) and export section (55) are divided into in proper order along the direction of inlet pipe (11) to outlet duct (12), the cross-section size of inlet section (51), sound-absorbing section (53) and export section (55) is unanimous, the cross-section size of first expansion section (52) and second expansion section (54) is greater than the cross-section size of sound-absorbing section (53), first sound-absorbing pipe (5) and second sound-absorbing pipe (8) structure are the same.

3. A noise reduction muffler with dust prevention function according to claim 2, characterized in that: the side wall of the silencing section (53), the air outlet surface (611) and the middle partition plate (3) are respectively provided with a plurality of air holes which are uniformly distributed at intervals.

4. A noise reduction muffler with dust prevention function according to claim 1, wherein: the dustproof device (6) further comprises a connecting pipe (64), one end of the connecting pipe (64) is clamped outside the vent hole (612) of the dustproof cover (61), and the other end of the connecting pipe (64) is detachably arranged at the end part of the air inlet pipe (11).

5. A noise reduction muffler with dust prevention function according to claim 2, characterized in that: the first expansion section (52) and the second expansion section (54) are symmetrically arranged, and the side wall of the first expansion section (52) is of a circular arc structure on a surface axially cut along the first silencing tube (5).

6. A noise reduction muffler with dust prevention function according to claim 1, wherein: the air outlet surface (611) is an inclined surface.

7. A noise reduction muffler with dust prevention function according to claim 1 or 4, characterized in that: the bottom of the dust cover (61) is provided with a dust collecting groove (63).