CN114694624A - a silencer - Google Patents

Abstract

The invention discloses a silencer, belonging to the technical field of silencers, comprising: the silencer comprises a shell, a first silencing unit, a second silencing unit, a third silencing unit and a fourth silencing unit, wherein the first silencing unit, the second silencing unit, the third silencing unit and the fourth silencing unit are sequentially arranged in the shell at intervals; the first silencing unit is arranged at one end of the shell, the fourth silencing unit is arranged at the other end of the shell, and the second silencing unit and the third silencing unit are positioned between the first silencing unit and the fourth silencing unit; the noise enters from the first silencing unit, sequentially passes through the second silencing unit, the third silencing unit and the fourth silencing unit, and is finally eliminated in the fourth silencing unit. According to the invention, the first silencing unit, the second silencing unit, the third silencing unit and the fourth silencing unit are assembled in a combined manner, so that the product has better assembly and interchangeability, is easier to produce, transport and install, and the silencing quantity of the product is effectively improved by optimizing the structure and the shape.

Description

a silencer

technical field

The invention relates to the technical field of mufflers, in particular to a muffler device.

Background technique

A muffler is one of the necessary noise reduction devices. The traditional muffler takes up a lot of space, is not easy to disassemble, and is difficult to overhaul, and has small noise reduction, large flow resistance, and large airflow regeneration noise, which will affect the use efficiency of the entire equipment, and the noise reduction effect is not ideal.

In view of this, a noise reduction device that can be perfectly combined with the sound insulation room to form a noise reduction whole to achieve the effect of sound insulation and noise reduction is designed.

SUMMARY OF THE INVENTION

In view of the above problems, the present invention provides a noise reduction device.

The technical scheme adopted in the present invention is: a noise reduction device, comprising: a housing, and a first noise reduction unit, a second noise reduction unit, a third noise reduction unit, and a fourth noise reduction unit installed in the housing at intervals in sequence;

The first muffler unit is installed at one end of the casing, and the fourth muffler unit is installed at the other end of the casing,

the second muffler unit and the third muffler unit are located between the first muffler unit and the fourth muffler unit;

The noise enters from the first silencing unit, passes through the second silencing unit, the third silencing unit and the fourth silencing unit in sequence, and is finally eliminated in the fourth silencing unit.

Further, the first muffler unit includes: a first mounting seat, glass wool and a plurality of first muffler pipes;

The first mounting seat is embedded in the front end of the casing, and a plurality of first mounting holes are formed through the first mounting seat,

The first muffler tube is sleeved in the first installation hole, and the glass wool is filled in the first muffler tube.

Further, the second muffler unit includes: a second mounting seat, glass wool and a plurality of second muffler pipes;

The second mounting seat is embedded in the casing, and a plurality of second mounting holes are formed through the second mounting seat,

The second muffler pipe is sleeved in the second installation hole, and the second muffler pipes are communicated in sequence through pipes,

The glass wool is filled in the second muffler tube.

Further, the cross section of the second muffler tube is in the shape of an isosceles trapezoid, wherein the large diameter end of the second muffler tube is close to the first muffler unit.

Further, a plurality of grooves are provided on the inner wall of the second muffler pipe, and the grooves are in a spiral shape.

Further, the third muffler unit includes: a third mounting seat, a third muffler pipe and glass wool;

The third mounting seat includes: a first mounting plate, a second mounting plate and a third mounting plate;

The first mounting plate, the second mounting plate and the third mounting plate are sequentially embedded in the casing at intervals, wherein the first mounting plate is arranged close to the second muffler unit;

The third muffler pipe includes: a first pipe, a plurality of second pipes and a plurality of third pipes;

the first pipe is plugged on the first mounting plate and the second mounting plate,

One end of the first pipe penetrates the first installation plate, and the other end of the first pipe penetrates the second installation plate;

the second pipe is plugged on the second mounting plate,

One end of the second pipe is located between the first mounting plate and the second mounting plate, and the other end of the second pipe is located between the second mounting plate and the third mounting plate;

the third pipe is plugged on the second mounting plate and the third mounting plate,

One end of the third pipe penetrates the second mounting plate, and the other end of the third pipe penetrates the third mounting plate;

The glass wool is respectively filled in the first pipe, the second pipe and the third pipe.

Further, the diameter of the first pipe is larger than the diameter of the second pipe, and the diameter of the second pipe is smaller than the diameter of the third pipe.

Further, the fourth muffler unit includes: a fourth mounting seat, glass wool and a plurality of fourth muffler pipes;

The fourth mounting seat is embedded in the rear end of the housing, and a plurality of muffler holes are provided through the fourth mounting seat,

The fourth muffler tube is sleeved in the muffler hole, and the glass wool is filled in the fourth muffler tube.

Further, the fourth muffler tube is an oval tube, the section of the muffler hole is oval, and the muffler hole is obliquely arranged on the fourth mounting seat.

Beneficial effects of the present invention:

By assembling the first muffler unit, the second muffler unit, the third muffler unit and the fourth muffler unit, the product has better assembly and interchangeability, and is easier to produce, transport and install. Effectively improve the noise reduction of the product.

The muffler is composed of a muffler unit, glass wool and a shell. The internal noise is gradually reduced by different muffler methods, and finally the noise is reduced to a minimum or eliminated. As a whole, it can be perfectly combined with the sound insulation room to form a noise reduction whole, thereby to the effect of sound insulation.

Description of drawings

The accompanying drawings that constitute a unit of the present application are used to provide further understanding of the present invention, and the exemplary embodiments of the present invention and their descriptions are used to explain the present invention, and do not constitute an improper limitation of the present invention.

Fig. 1 is the overall structure schematic diagram of the embodiment of the present invention;

2 is a schematic diagram of the installation of the first muffler unit according to an embodiment of the present invention;

Fig. 3 is the installation schematic diagram of the fourth muffler unit according to the embodiment of the present invention;

4 is a schematic structural diagram of a second muffler unit according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a third muffler unit according to an embodiment of the present invention.

Reference number:

1 is the first mounting seat, 101 is the first muffler pipe, 2 is the second mounting seat, 201 is the second muffler pipe, 202 is the pipe, 3 is the shell, 301 is the first mounting plate, 302 is the second mounting plate , 303 is the third mounting plate, 304 is the first pipe, 305 is the second pipe, 306 is the third pipe, 4 is the fourth mounting seat, and 401 is the fourth muffler pipe.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

Referring to FIGS. 1 to 5 , as shown in FIGS. 1 to 5 , a muffler device includes: a housing 3 , and a first muffler unit, a second muffler unit, a first muffler unit, a second muffler unit, a Three muffler units, fourth muffler unit;

The first muffler unit is installed at one end of the housing 3, the fourth muffler unit is installed at the other end of the housing 3,

the second muffler unit and the third muffler unit are located between the first muffler unit and the fourth muffler unit;

The noise enters from the first silencing unit, passes through the second silencing unit, the third silencing unit and the fourth silencing unit in sequence, and is finally eliminated in the fourth silencing unit.

It should be noted that the main invention of this solution is that the four noise-absorbing units can be combined and installed according to the actual scene, and the noise of different decibels can be eliminated and absorbed in a targeted manner, that is, targeted noise reduction and noise reduction can be achieved. , and can be easily installed and disassembled.

In an embodiment of the present invention, the first muffler unit includes: a first mounting seat 1, glass wool, and a plurality of first muffler tubes 101;

The first mounting seat 1 is embedded in the front end of the housing 3, and a plurality of first mounting holes are formed through the first mounting seat 1.

The first muffler tube 101 is sleeved in the first installation hole, and the glass wool is filled in the first muffler tube 101 .

It should be noted that glass wool is a product made of centrifugal glass wool felt, which is processed with an environmentally friendly formula binder that is mainly made of molten glass fiber and thermosetting resin. It is a kind of glass fiber with a diameter of only a few microns. The elastic felt-like body is made, and different moisture-proof veneers can be selected online for compounding according to the requirements of use. It has a large number of tiny air pores, which make it play the role of thermal insulation, sound absorption and noise reduction, and safety protection. It is the best material for thermal insulation, sound absorption and noise reduction of steel structure buildings.

When the noise enters the first muffler unit, it is divided into several parts by the first muffler pipe, the noise is reduced, and then the noise spreads along the first muffler pipe. out, ready to enter the second muffler unit.

In an embodiment of the present invention, the second muffler unit includes: a second mounting seat 2, glass wool, and a plurality of second muffler tubes 201;

The second mounting seat 2 is embedded in the casing 3, and a plurality of second mounting holes are formed through the second mounting seat 2,

The second muffler pipe 201 is sleeved in the second installation hole, and the second muffler pipes 201 are communicated in sequence through the pipeline 202,

The glass wool is filled in the second muffler tube 201 .

It should be noted that the noise transmitted from the first lower muffler pipe has been weakened. At this time, the decibel-reduced noise enters from the second lower muffler pipe and then spreads out from the second muffler pipe. During this process, part of the noise follows the first A muffler pipe spreads out, and part of it propagates along the pipe to cancel each other out, and the remaining part is absorbed by the sound insulation cotton. Therefore, the noise is on the basis of the first muffler unit, and after passing through the second muffler unit, the decibel of the noise is further reduced. When After the noise is transmitted from the second muffler pipe, it is ready to enter the third muffler unit.

In an embodiment of the present invention, the cross section of the second muffler pipe 201 is an isosceles trapezoid, wherein the large diameter end of the second muffler pipe 201 is close to the first muffler unit.

Among them, the shape of the second muffler pipe is similar to the shape of a cone. The main function is that after the noise is transmitted from the first muffler unit, the noise can enter the second muffler pipe in time along the big end of the second muffler pipe to generate noise reduction and noise reduction. The process avoids the noise being reflected back along the first muffler tube.

In an embodiment of the present invention, the inner wall of the second muffler tube 201 is provided with a plurality of grooves, and the grooves are in a spiral shape.

Wherein, when the noise propagates in the second muffler pipe, the spiral groove arranged can cooperate with the pipe to change the frequency of the noise and delay the propagation speed, so that the noises cancel each other, reduce the decibel of the noise, and eliminate part of the noise.

In an embodiment of the present invention, the third muffler unit includes: a third mounting seat, a third muffler tube and glass wool;

The third mounting seat includes: a first mounting plate 301, a second mounting plate 302 and a third mounting plate 303;

The first mounting plate 301, the second mounting plate 302 and the third mounting plate 303 are sequentially embedded in the casing 3 at intervals, wherein the first mounting plate 301 is disposed close to the second muffler unit;

The third muffler pipe includes: a first pipe 304, several second pipes 305 and several third pipes 306;

The first pipe 304 is plugged on the first mounting plate 301 and the second mounting plate 302,

One end of the first pipe 304 penetrates the first installation plate 301, and the other end of the first pipe 304 penetrates the second installation plate 302;

The second pipe 305 is plugged on the second mounting plate 302,

One end of the second pipe 305 is located between the first mounting plate 301 and the second mounting plate 302, and the other end of the second pipe 305 is located between the second mounting plate 302 and the third mounting plate between the plates 303;

The third pipe 306 is plugged on the second mounting plate 302 and the third mounting plate 303,

One end of the third pipe 306 penetrates the second mounting plate 302, and the other end of the third pipe 306 penetrates the third mounting plate 303;

The glass wool is filled in the first pipe 304 , the second pipe 305 and the third pipe 306 respectively.

It should be noted that after the noise is transmitted from the second muffler pipe, it first enters between the second mounting plate and the third mounting plate along the first pipe, and then the noise spreads along the second pipe to the first mounting plate and the second mounting plate. Between the mounting plates, finally the noise enters the fourth muffler unit along the third pipe from between the first mounting plate and the second mounting plate.

During this process, a part of the noise is first absorbed by the sound insulation cotton, and another part of the noise enters the first pipe from the second muffler unit, and the noise propagates along the second pipe to between the first mounting plate and the second mounting plate. At this time, Because the second pipe connects the two sides of the second mounting plate, part of the noise between the first mounting plate and the second mounting plate enters the fourth muffler unit along the third pipe, and a part is connected to the second mounting plate and the third mounting plate. The noise between them cancels each other out, so as to further reduce the noise decibel and eliminate part of the noise on the basis of the second muffler unit.

In an embodiment of the present invention, the diameter of the first pipe 304 is larger than the diameter of the second pipe 305 , and the diameter of the second pipe 305 is smaller than the diameter of the third pipe 306 .

Among them, the diameter of the first pipe is the largest, so that the noise can enter the third muffler unit in time, and the diameter of the second pipe is the smallest, which fully provides time for the noises to cancel each other out.

In an embodiment of the present invention, the fourth muffler unit includes: 4 a fourth mounting seat, glass wool, and a plurality of fourth muffler pipes 401;

The fourth mounting seat 4 is embedded in the rear end of the housing 3, and the fourth mounting seat 4 is provided with a number of muffling holes therethrough.

The fourth muffler tube 401 is sleeved in the muffler hole, and the glass wool is filled in the fourth muffler tube 401 .

In an embodiment of the present invention, the fourth muffler tube 401 is an oval tube, the section of the muffler hole is oval, and the muffler hole is obliquely arranged on the fourth mounting seat 4 .

It should be noted that the noise propagates from the third muffler unit. When entering the fourth muffler pipe, the direction of noise propagation changes due to the inclined arrangement of the fourth muffler pipe. At this time, the noise is canceled at the mouth of the fourth muffler pipe. After entering the fourth muffler pipe, it is absorbed by the sound insulation cotton, and the noise that is gradually weakened is eliminated in the fourth muffler pipe.

The working method of the muffler device provided by the present invention, when in use, the noise enters the first muffler pipe, is divided into several parts by the first muffler pipe, the noise is reduced, and then the noise propagates along the first muffler pipe, and in the process is The sound insulation cotton absorbs a part, and then the noise spreads out from the first muffler pipe, ready to enter the second muffler unit;

Then, the noise propagated from the first lower muffler pipe has weakened. At this time, the decibel-reduced noise enters from the second lower muffler pipe. Part of the noise propagates along the first muffler pipe, and part of the noise propagates along the pipe to cancel each other out. Part of it is absorbed by the sound insulation cotton, and finally the weakened noise is transmitted from the second muffler pipe and is ready to enter the third muffler unit;

Then, after the noise is transmitted from the second muffler pipe, it first enters between the second mounting plate and the third mounting plate along the first pipe, and then the noise travels along the second pipe to the space between the first mounting plate and the second mounting plate During this time, the noise finally enters the fourth muffler unit from between the first mounting plate and the second mounting plate along the third pipe.

During this process, a part of the noise is first absorbed by the sound insulation cotton, and another part of the noise enters the first pipe from the second muffler unit, and the noise propagates along the second pipe to between the first mounting plate and the second mounting plate. At this time, Because the second pipe connects the two sides of the second mounting plate, part of the noise between the first mounting plate and the second mounting plate enters the fourth muffler unit along the third pipe, and a part is connected to the second mounting plate and the third mounting plate. The noise between them cancels each other out, so as to further reduce the noise decibel on the basis of the second muffler unit, and eliminate part of the noise;

Finally, the noise spreads out from the third muffler unit. When entering the fourth muffler pipe, the direction of noise transmission changes due to the inclined setting of the fourth muffler pipe. At this time, the noise is canceled at the mouth of the fourth muffler pipe and enters the fourth muffler pipe. After the muffler pipe, it is absorbed by the sound insulation cotton, and the noise after the gradual weakening is most accurately eliminated in the fourth muffler pipe.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection of the present invention. within the range.

Claims (9)

1. A muffler device, comprising: a housing, and a first muffler unit, a second muffler unit, a third muffler unit, and a fourth muffler unit installed in the housing at intervals in sequence; The first muffler unit is installed at one end of the casing, and the fourth muffler unit is installed at the other end of the casing, the second muffler unit and the third muffler unit are located between the first muffler unit and the fourth muffler unit; The noise enters from the first silencing unit, passes through the second silencing unit, the third silencing unit and the fourth silencing unit in sequence, and is finally eliminated in the fourth silencing unit. 2 . The muffler device according to claim 1 , wherein the first muffler unit comprises: a first mounting seat, glass wool and a plurality of first muffler pipes; 3 . The first mounting seat is embedded in the front end of the housing, and the first mounting seat is provided with a plurality of first mounting holes therethrough, The first muffler tube is sleeved in the first installation hole, and the glass wool is filled in the first muffler tube. 3 . The muffler device according to claim 1 , wherein the second muffler unit comprises: a second mounting seat, glass wool and a plurality of second muffler pipes; 4 . The second mounting seat is embedded in the casing, and a plurality of second mounting holes are formed through the second mounting seat, The second muffler pipe is sleeved in the second installation hole, and the second muffler pipes are communicated in sequence through pipes, The glass wool is filled in the second muffler tube. 4 . The muffler device according to claim 3 , wherein the cross section of the second muffler tube is in an isosceles trapezoid shape, wherein a large diameter end of the second muffler tube is close to the first muffler unit. 5 . 5 . The muffler device according to claim 3 , wherein a plurality of grooves are provided on the inner wall of the second muffler pipe, and the grooves are in a spiral shape. 6 . 6. The muffler device according to claim 1, wherein the third muffler unit comprises: a third mounting seat, a third muffler pipe and glass wool; The third mounting seat includes: a first mounting plate, a second mounting plate and a third mounting plate; The first mounting plate, the second mounting plate and the third mounting plate are sequentially embedded in the casing at intervals, wherein the first mounting plate is arranged close to the second muffler unit; The third muffler pipe includes: a first pipe, a plurality of second pipes and a plurality of third pipes; the first pipe is plugged on the first mounting plate and the second mounting plate, One end of the first pipe penetrates the first installation plate, and the other end of the first pipe penetrates the second installation plate; the second pipe is plugged on the second mounting plate, One end of the second pipe is located between the first mounting plate and the second mounting plate, and the other end of the second pipe is located between the second mounting plate and the third mounting plate; the third pipe is plugged on the second mounting plate and the third mounting plate, One end of the third pipe penetrates the second mounting plate, and the other end of the third pipe penetrates the third mounting plate; The glass wool is respectively filled in the first pipe, the second pipe and the third pipe. 7 . The muffler device according to claim 6 , wherein the diameter of the first pipe is larger than the diameter of the second pipe, and the diameter of the second pipe is smaller than the diameter of the third pipe. 8 . 8 . The muffler device according to claim 1 , wherein the fourth muffler unit comprises: a fourth mounting seat, glass wool and a plurality of fourth muffler pipes; 9 . The fourth mounting seat is embedded in the rear end of the housing, and a plurality of muffler holes are provided through the fourth mounting seat, The fourth muffler tube is sleeved in the muffler hole, and the glass wool is filled in the fourth muffler tube. 9 . The muffler device according to claim 8 , wherein the fourth muffler tube is an oval tube, the section of the muffler hole is oval, and the muffler hole is obliquely arranged on the fourth installation. 10 . seat.

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