CN216342385U - Silencing device - Google Patents

Abstract

The utility model discloses a silencer, and belongs to the technical field of silencers. The purpose is to reduce noise generated by the engine and reduce noise pollution. The technical scheme is that the silencer comprises a shell, wherein a first partition plate, a second partition plate, a third partition plate, a fourth partition plate and a fifth partition plate are sequentially arranged between one end and the other end in the shell, the shell is internally divided into a first silencing chamber, a second silencing chamber, a third silencing chamber, a fourth silencing chamber, a fifth silencing chamber and a sixth silencing chamber through the fifth partition plate, an air inlet is formed in the shell located in the third silencing chamber, and an air outlet is formed in the shell located in the sixth silencing chamber.

Description

Silencing device

Technical Field

The utility model belongs to the technical field of silencing devices, and relates to a silencing device.

Background

An engine is a machine capable of converting other forms of energy into mechanical energy, and is a mechanical device for generating power. The sound intensity generated by the engine during working is very big sound, and the sound directly transmitted to the space from the engine body and the main accessories belongs to the noise of the engine. Noise is a by-product of industrial society and is considered to be three major public hazards in the world today, along with atmospheric and water pollution. Noise pollution is created when noise adversely affects people and the surrounding environment. Compared with other two public hazards, the noise has the widest influence range and the most direct feeling, and people reflect the most noise.

In the process of implementing the utility model, the inventor finds that at least the following problems exist in the prior art:

1. the existing silencing device used on the engine has the problems of simple structure, poor silencing effect, complex structure, large volume, high weight and high production cost, and can ensure the silencing effect;

2. the noise comprises high-frequency noise and low-frequency noise, and when the noise generated by the engine is reduced, the high-frequency noise and the low-frequency noise need to be simultaneously reduced, so that the noise reduction requirement is met;

3. most of the existing silencing devices are fixed only through independent external fixing pieces, and the stability is poor.

Disclosure of Invention

In view of the above, the present invention is directed to a muffler device for reducing noise pollution by performing noise reduction processing on noise generated by an engine.

The utility model provides a silencing device through long-term exploration and trial, a plurality of experiments and efforts and continuous innovation, and aims to solve the technical problems, the utility model provides a silencing device which comprises an outer shell, wherein a first partition plate, a second partition plate, a third partition plate, a fourth partition plate and a fifth partition plate are sequentially arranged between one end and the other end in the outer shell to divide the inner shell into a first silencing chamber, a second silencing chamber, a third silencing chamber, a fourth silencing chamber, a fifth silencing chamber and a sixth silencing chamber, an air inlet is arranged on the outer shell of the third silencing chamber, a first vent pipe is arranged on the second partition plate, one end of the first vent pipe is arranged on the first partition plate, the other end of the first vent pipe is arranged on the third partition plate, a plurality of first air inlet holes are arranged on the first vent pipe in the third silencing chamber, a plurality of first air exhaust holes are arranged on the first vent pipe in the second silencing chamber, the first baffle is provided with a plurality of second vent pipes used for communicating the first silencing chamber and the second silencing chamber, at least one third vent pipe which sequentially penetrates through the third baffle, the second baffle and the first baffle and is used for communicating the fourth silencing chamber and the first silencing chamber is arranged in the shell, the fourth baffle is provided with a fourth vent pipe, one end of the fourth vent pipe is arranged on the third baffle, the other end of the fourth vent pipe is arranged on the fifth baffle, a plurality of second air inlet holes are formed in the fourth vent pipe which is positioned in the fourth silencing chamber, a plurality of second air outlet holes are formed in the fourth vent pipe which is positioned in the fifth silencing chamber, a plurality of third air outlet holes are formed in the fifth baffle, and an air outlet is formed in the shell of the sixth silencing chamber.

According to a specific embodiment of the silencer, a fixing mechanism is arranged on the outer side wall of the outer shell, the fixing mechanism is arranged on the air inlet, and an air inlet through groove communicated with the air inlet is formed in the fixing mechanism.

According to a preferred embodiment of the silencing device of the present invention, the fixing mechanism is provided with at least one fixing column, the side wall of the outer shell located in the third silencing chamber is provided with at least one first mounting hole, one end of each fixing column is mounted on the fixing mechanism, and the other end of each fixing column is mounted in the corresponding first mounting hole.

According to a further embodiment of the silencer device of the present invention, the first vent pipe located in the third silencing chamber is provided with at least one second mounting hole and at least one third mounting hole corresponding to the second mounting hole, and each fixing post sequentially passes through one second mounting hole and one third mounting hole corresponding to the second mounting hole to be matched with the first vent pipe.

According to a further embodiment of the silencing device of the present invention, a sound absorbing and filtering mechanism is disposed between the inner wall of the outer casing of the fifth silencing chamber and the outer wall of the fourth vent pipe of the fifth silencing chamber.

According to a further embodiment of the silencer device, the outer casing includes an upper casing cover, a casing body, and a lower casing cover, one end of the casing body is connected to the upper casing cover, the other end of the casing body is connected to the lower casing cover, the air inlet is located on an outer side wall of the casing body, and the air outlet is located on the lower casing cover.

According to a further embodiment of the silencer, the exhaust port is provided with an exhaust pipe, the end surface of the pipe orifice of one end of the exhaust pipe located outside the casing is an inclined surface, the end surface of the pipe orifice of each second vent pipe located at two ends of each second vent pipe is an inclined surface, the end surface of the pipe orifice of each second vent pipe located in the second silencing chamber faces the axial lead of the casing, and the end surface of the pipe orifice of each second vent pipe located in the first silencing chamber faces the inner side wall of the casing.

According to a further embodiment of the silencing device of the present invention, a fixing plate is disposed in the second silencing chamber, an outer edge surface of the fixing plate is connected to an inner wall of the outer casing, the fixing plate is provided with a plurality of first fixing grooves and at least one second fixing groove, each second vent pipe located in the second silencing chamber is installed in the first fixing groove, each third vent pipe located in the second silencing chamber is installed in the second fixing groove, and a relief portion is disposed in a middle portion of the fixing plate.

According to a further embodiment of a silencer device according to the present invention, the plurality of second intake holes are located on a side away from the third intake pipe into the fourth silencing chamber.

In accordance with a further embodiment of a sound-attenuating device according to the present invention, the plurality of third air outlet holes are circumferentially arrayed on the fifth partition, and the plurality of third air inlet holes are circumferentially arrayed on the fourth partition.

Compared with the prior art, one of the technical solutions has the following advantages:

a) the first partition plate, the second partition plate, the third partition plate, the fourth partition plate and the fifth partition plate are sequentially arranged between one end and the other end in the outer shell, so that the outer shell is divided into a first silencing chamber, a second silencing chamber, a third silencing chamber, a fourth silencing chamber, a fifth silencing chamber and a sixth silencing chamber, noise is subjected to multi-stage noise reduction, and noise is reduced and eliminated to the maximum extent in a limited space; an air inlet is arranged on an outer shell of a third silencing chamber, a first vent pipe is arranged on a second partition plate, a plurality of first air inlet holes are arranged on the first vent pipe in the third silencing chamber, a plurality of first exhaust holes are arranged on the first vent pipe in the second silencing chamber, a plurality of second vent pipes for communicating the first silencing chamber with the second silencing chamber are arranged on the first partition plate, at least one third vent pipe which sequentially penetrates through the third partition plate, the second partition plate and the first partition plate and is used for communicating the fourth silencing chamber with the first silencing chamber is arranged in the outer shell, a fourth vent pipe is arranged on the fourth partition plate, one end of the fourth vent pipe is arranged on the third partition plate, the other end of the fourth vent pipe is arranged on the fifth partition plate, a plurality of second air inlet holes are arranged on the fourth vent pipe in the fourth silencing chamber, a plurality of second exhaust holes are arranged on the fourth vent pipe in the fifth silencing chamber, the fifth clapboard is provided with a plurality of third air vents, the shell of the sixth silencing chamber is provided with an air outlet, so that air flow enters the third silencing chamber from an air inlet, then the air flow enters the first air vent pipe from the first air inlet holes at different positions on the first air vent pipe, the process is a process of dispersing and then converging the air flow, the air flow enters the first air vent pipe from the first air inlet holes at different positions, the entering paths are different, the entering sequence is different, the air flow can collide with each other when entering the first air vent pipe, so that the wavelengths of noise are mutually offset, a certain silencing effect is achieved, the air flow entering the first air vent pipe is discharged from the first air vent hole and enters the second silencing chamber, the process also realizes noise reduction treatment by dispersing and then converging the air flow, the air flow is dispersed and discharged from the first air vent holes at different positions and then enters the second silencing chamber from all directions, the air flows are converged after collision in the second silencing chamber, the converged air flows are dispersed and enter the first silencing chamber through a plurality of different second air ducts, the air flows are merged again in the first silencing chamber, the air flows merged in the first silencing chamber enter the fourth silencing chamber through the third vent pipe, then enters a fourth air vent pipe through a second air inlet hole arranged in a fourth silencing chamber, is silenced and denoised in a processing mode of dispersing and then converging air flow, is discharged into a fifth silencing chamber through a second air vent hole of the fourth air vent pipe, is also dispersed and then converged when discharged, and finally is dispersed and discharged into a sixth silencing chamber through a third air vent hole on a fifth clapboard, the air flow is discharged through an air outlet after being converged in a sixth silencing chamber, the device mainly adopts the technical scheme that the air flow is converged after being dispersed, in the process, the airflow is collided, and the traveling path of the airflow is prolonged and changed in a limited space to realize a good silencing effect.

b) The utility model adopts the fixing mechanism, the fixing mechanism is arranged on the air inlet, the fixing mechanism is provided with the air inlet through groove communicated with the air inlet, the fixing mechanism is fixedly connected with the air outlet of the equipment needing to be silenced, the airflow enters the silencing device through the air inlet groove of the fixing mechanism, and the airflow is introduced into the silencing device without arranging a separate connecting pipe.

c) The fixing mechanism is provided with the fixing columns, so that the stability between the silencing device and the connected equipment is further enhanced.

d) According to the utility model, the first vent pipe positioned in the third silencing chamber is provided with the second mounting hole and the third mounting hole corresponding to the second mounting hole, and each fixing column sequentially passes through one second mounting hole and one third mounting hole corresponding to the second mounting hole to be matched with the first vent pipe, so that the supporting force of the fixing column on the silencing device is further enhanced, and the stability of the whole structure of the silencing device is further improved.

e) According to the utility model, the arrangement that the sound absorption and filtration mechanism is arranged between the inner wall of the outer shell of the fifth silencing chamber and the outer wall of the fourth vent pipe positioned in the fifth silencing chamber is adopted, noise is reduced through the sound absorption and filtration mechanism, and the silencing and noise reduction effects of the utility model are further improved.

f) The outer shell comprises the upper shell cover, the shell body and the lower shell cover, so that the mounting work of other parts in the production and manufacturing process is facilitated, and the disassembly and maintenance work in the later use process of a user is facilitated.

g) The exhaust port is provided with the exhaust pipe, the end face of the pipe orifice of one end of the exhaust pipe, which is positioned outside the shell, is an inclined plane, the direction of air flowing to the inclined plane can be guided, the inclined plane faces downwards during installation, and the waterproof and dustproof effects can be further achieved.

h) According to the utility model, the second silencing chamber is internally provided with the fixing plate, the middle part of the fixing plate is provided with the position yielding part, the stability of the second vent pipe and the third vent pipe in the silencing device is further improved through the fixing plate, the position yielding part is used for yielding the position of the first vent pipe, the installation is convenient, and airflow can enter the third vent pipe through the position yielding part.

i) According to the utility model, the plurality of second air inlets are arranged on one side of the fourth silencing chamber far away from the third air inlet pipe, so that the traveling path of the air flow needing silencing and noise reduction is prolonged, and the silencing and noise reduction effects are improved.

j) According to the utility model, the plurality of third exhaust holes are circumferentially arrayed on the fifth partition plate to ensure that noise can uniformly enter the sixth silencing chamber, and the plurality of third air inlet holes are circumferentially arrayed on the fourth partition plate, so that on one hand, the speed of the noise entering the fifth silencing chamber from the fourth silencing chamber can be improved, on the other hand, the noise enters the fifth silencing chamber through the third exhaust holes and can collide with the noise entering the fifth silencing chamber through the second exhaust holes of the fourth vent pipe, and the silencing effect is further improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic view of the construction of the present invention (without the sound absorbing filter mechanism).

Fig. 2 is a perspective view of fig. 1.

Fig. 3 is a schematic structural diagram of the present invention.

Fig. 4 is a perspective view of fig. 3.

Fig. 5 is a schematic perspective view of the outer case of the present invention.

Fig. 6 is a schematic structural view of a fixing plate according to the present invention.

Fig. 7 is a perspective view of the first vent pipe according to the present invention.

The labels in the figure are respectively: 110 a first silencing chamber, 120 a second silencing chamber, 121 a fixing plate, 1210 a first fixing groove, 1211 a second fixing groove, 1212 a relief portion, 130 a third silencing chamber, 131 an air inlet, 132 a first mounting hole, 140 a fourth silencing chamber, 150 a fifth silencing chamber, 151 a sound absorbing and filtering mechanism, 160 a sixth silencing chamber, 161 an air outlet, 1610 an air outlet pipe, 170 an upper housing cover, 180 a housing body, 190 a lower housing cover, 200 a first partition plate, 210 a second air vent pipe, 300 a second partition plate, 310 a first air vent pipe, 311 a first air inlet hole, 312 a first air outlet hole, 313 a second mounting hole, 314 a third mounting hole, 400 a third partition plate, 500 a fourth partition plate, 510 a fourth air vent pipe, 511 a second air inlet hole, 512 a second air outlet hole, 520 a third air inlet hole, 600 a fifth partition plate, 610 a third air outlet hole, 700 a third air vent pipe, 800 a fixing mechanism 810 an air inlet through groove and 820 a fixing column.

Detailed Description

The following description is made with reference to the accompanying drawings and a specific embodiment.

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it may not be further defined and explained in subsequent figures.

Example 1:

see fig. 1-2 and 5-7. The embodiment describes a silencer, which comprises an outer casing, wherein a first partition plate 200, a second partition plate 300, a third partition plate 400, a fourth partition plate 500 and a fifth partition plate 600 are sequentially arranged between one end and the other end in the outer casing to divide the interior of the outer casing into a first silencing chamber 110, a second silencing chamber 120, a third silencing chamber 130, a fourth silencing chamber 140, a fifth silencing chamber 150 and a sixth silencing chamber 160, an air inlet 131 is arranged on the outer casing of the third silencing chamber 130, a first vent pipe 310 is arranged on the second partition plate 300, one end of the first vent pipe 310 is arranged on the first partition plate 200, the other end of the first vent pipe 310 is arranged on the third partition plate 400, a plurality of first air inlet holes 311 are arranged on the first vent pipe 310 in the third silencing chamber 130, a plurality of first air outlet holes 312 are arranged on the first vent pipe 310 in the second silencing chamber 120, a plurality of second vent pipes 210 for communicating the first silencing chamber 110 and the second silencing chamber 120 are arranged on the first partition plate 200 The outer casing is at least internally provided with a third vent pipe 700 which sequentially penetrates through the third partition plate 400, the second partition plate 300 and the first partition plate 200 and is used for communicating the fourth muffling chamber 140 with the first muffling chamber 110, the fourth partition plate 500 is provided with a fourth vent pipe 510, one end of the fourth vent pipe 510 is installed on the third partition plate 400, the other end of the fourth vent pipe 510 is installed on the fifth partition plate 600, the fourth vent pipe 510 positioned in the fourth muffling chamber 140 is provided with a plurality of second air inlet holes 511, the fourth vent pipe 510 positioned in the fifth muffling chamber 150 is provided with a plurality of second air outlet holes 512, the fifth partition plate 600 is provided with a plurality of third air outlet holes 610, and the outer casing positioned in the sixth muffling chamber 160 is provided with an air outlet 161. In this embodiment, the outer shell is a cylinder with a hollow interior, and the outer shell in this embodiment is a high temperature resistant outer shell made of high temperature resistant stainless steel; the first partition plate 200, the second partition plate 300, the third partition plate 400, the fourth partition plate 500, and the fifth partition plate 600 are circular partition plates sequentially arranged from one end to the other end inside the outer case, and the outer edge surfaces of the first partition plate 200, the second partition plate 300, the third partition plate 400, the fourth partition plate 500, and the fifth partition plate 600 are all attached to the inner wall of the outer case so as to sequentially divide the inside of the outer case into the first muffling chamber 110, the second muffling chamber 120, the third muffling chamber 130, the fourth muffling chamber 140, the fifth muffling chamber 150, and the sixth muffling chamber 160 from one end to the other end.

When the noise-reducing silencing device is used, the air inlet 131 is connected with an air outlet of an engine, when engine noise is generated, air flow enters the third silencing chamber 130 through the air inlet 131 and then collides with the outer pipe wall of the first ventilating pipe 310 in the third silencing chamber 130, the inner wall of the outer shell, one side of the second partition plate 300 and one side of the third partition plate 400 respectively, noise is reduced and silenced in the third silencing chamber 130 preliminarily, and then enters the first ventilating pipe 310 through the first air inlet 311; the air flow entering the first ventilation pipe 310 is discharged from the first ventilation pipe 310 through the first air discharge hole 312, enters the second muffling chamber 120, and the air flow in the second muffling chamber 120 collides with the first partition plate 200, the inner wall of the outer casing, and the second partition plate 300, respectively, to reduce noise and muffles, and then enters the first muffling chamber 110 through the second ventilation pipe 210. in particular, in the present embodiment, in the second muffling chamber 120, the air inlet end of the second ventilation pipe 210 is located at a side close to the third muffling chamber 130, and the first air discharge hole 312 is located at a side close to the first muffling chamber 110, so that the air flow entering the second muffling chamber 120 through the first air discharge hole 312 is moved in the direction of the third muffling chamber 130 after colliding, then moved in the direction of the first muffling chamber 110 after colliding with the second partition plate 300, and then enters the second ventilation pipe 210, which can extend the time for the air flow entering the second muffling chamber 120 to enter the second ventilation pipe 210, the air flow has longer flowing distance and longer flowing time, and the noise reduction and silencing effects are increased; the air flow entering the first muffling chamber 110 through the second snorkel 210 collides with the inner wall of the outer shell and the first partition plate, enters the third snorkel 700, and then enters the fourth muffling chamber 140 through the third snorkel 700; the air flow entering the fourth muffling chamber 140 collides with the inner wall of the outer case, the other side of the third partition 400 and one side of the fourth partition 500, enters the fourth vent pipe 510 through the second air inlet 511, and then enters the fifth muffling chamber 150 through the second air outlet 512 of the fourth vent pipe 510; the airflow entering the fifth muffling chamber 150 collides with the inner wall of the outer case, the other side of the fourth partition 500, and the fifth partition 600, and then enters the sixth muffling chamber 160 through the third exhaust hole 610 of the fifth partition 600, and finally the airflow sound after the multi-stage muffling process is exhausted from the exhaust port 161.

Specifically, be equipped with fixed establishment 800 on the lateral wall of shell body, fixed establishment 800 sets up on air inlet 131, fixed establishment 800 is last to be equipped with the logical groove 810 of admitting air that communicates with air inlet 131. In this embodiment, the fixing mechanism 800 is a fixing base made of metal plate, one end of the fixing mechanism 800 is installed on the air inlet 131 of the outer shell, the other end of the fixing mechanism can be installed at the air outlet of the engine for discharging noise airflow, and the noise airflow enters the outer shell through the air inlet through groove 810 to be subjected to noise reduction and silencing.

Specifically, the fixing mechanism 800 is provided with at least one fixing column 820, the side wall of the outer casing located in the third muffling chamber 130 is provided with at least one first mounting hole 132, one end of each fixing column 820 is mounted on the fixing mechanism 800, and the other end of each fixing column 820 is mounted in the corresponding first mounting hole 132. In this embodiment, two fixing posts 820 are specifically adopted, and the fixing posts 820 are supporting tubes with hollow interiors, so that the fixing ability of the fixing mechanism 800 to this embodiment can be improved.

Specifically, at least one second mounting hole 313 and at least one third mounting hole 314 corresponding to the second mounting hole 313 are formed in the first air pipe 310 located in the third sound-deadening chamber 130, and each fixing post 820 sequentially passes through one second mounting hole 313 and one third mounting hole 314 corresponding to the second mounting hole 313 to be matched with the first air pipe 310. In this embodiment, the fixing post 820 further passes through the second mounting hole 313 and the third mounting hole 314 of the first vent pipe 310 to fix the first vent pipe 310, so as to improve the stability of the first vent pipe 310 in this embodiment.

Specifically, the outer housing includes an upper housing cover 170, a housing body 180 and a lower housing cover 190, one end of the housing body 180 is connected to the upper housing cover 170, the other end of the housing body 180 is connected to the lower housing cover 190, the air inlet 131 is located on an outer sidewall of the housing body 180, and the air outlet 161 is located on the lower housing cover 190. In this embodiment, the outer casing includes that upper shell cover 170, casing body 180 and lower casing cover 190 triplex constitute, the dismouting work when the installation of each part and later stage overhaul replacement when being convenient for earlier stage production manufacturing.

Specifically, be equipped with blast pipe 1610 on the gas vent 161, the mouth of pipe terminal surface that blast pipe 1610 is located the outer one end of shell is the inclined plane, and the mouth of pipe terminal surface at every second breather pipe 210 both ends is the inclined plane, and every mouth of pipe terminal surface that is located the second breather pipe 210 in the second anechoic chamber 120 all faces the shell body axial lead, and every mouth of pipe terminal surface that is located the second breather pipe 210 in the first anechoic chamber 110 all faces the shell body inside wall. In this embodiment, the end surface of the pipe orifice of the exhaust pipe 1610, which is located at one end outside the housing, is an inclined surface, which can adjust the trend of the exhaust gas flow and make the gas flow in the direction perpendicular to the inclined surface when the exhaust gas flow is exhausted; in addition, the longer side of the exhaust pipe faces upwards, and the shorter side faces downwards, so that the exhaust pipe can play a role in preventing water and dust during use.

Specifically, a fixing plate 121 is disposed in the second muffling chamber 120, an outer edge surface of the fixing plate 121 is connected to an inner wall of the outer housing, the fixing plate 121 is provided with a plurality of first fixing grooves 1210 and at least one second fixing groove 1211, each second vent pipe 210 located in the second muffling chamber 120 is installed in the first fixing groove 1210, each third vent pipe 700 located in the second muffling chamber 120 is installed in the second fixing groove 1211, and a position-giving portion 1212 is disposed in the middle of the fixing plate 121. In this embodiment, the fixing plate 121 can fix the second vent pipe 210 and the third vent pipe 700 passing through the second muffling chamber 120, the stability of the vent pipe 210 and the third vent pipe 700 in this embodiment is further improved, the offset portion 1212 is used to pass through the first vent pipe 310, and particularly, the first vent hole 312 in this embodiment is disposed on the first vent pipe 310 between the first partition plate 200 and the fixing plate 121, and the air flow enters the second muffling chamber 120 through the first vent hole 312 and then enters the first muffling chamber 110 through the offset portion 1212 and the second vent pipe 210 in sequence.

Specifically, the plurality of second air intake holes 511 are located at a side away from the third air intake pipe 700 into the fourth muffling chamber 140. In this embodiment, the outlet end of the third air passing pipe 700 entering the fourth sound-deadening chamber 140 is close to the upper part of the third partition plate 400, the second air inlet hole 511 is close to the lower part of the third partition plate 400, and after the air flow enters the fourth sound-deadening chamber 140, the air flow needs to move from the upper part of the fourth sound-deadening chamber 140 to the lower part of the fourth sound-deadening chamber 140 before entering the fourth air passing pipe 510 from the second air inlet hole 511, so that the path and the time taken by the air flow in the present invention are further extended, and the sound-deadening and noise-reducing effects are further improved.

Specifically, the plurality of third exhaust holes 610 are circumferentially arranged in an array on the fifth separator 600, and the plurality of third air inlet holes 520 are circumferentially arranged in an array on the fourth separator 500. In this embodiment, the third exhaust holes 610 are circumferentially arrayed on the fifth partition 600, so that the whole structure is regular, and the appearance is beautiful; the fourth partition 500 is provided with a plurality of third air inlet holes 520 in a circumferential array, air flow can enter the fifth muffling chamber 150 from the fourth muffling chamber 140 through the fourth vent pipe 510, and can enter the fifth muffling chamber 150 from the fourth muffling chamber 140 through the third air inlet holes 520, and the air flow entering the fifth muffling chamber 150 through the fourth vent pipe 510 and the air flow entering the fifth muffling chamber 150 from the fifth air inlet holes 520 collide with each other, so that the noise reduction capability of the present invention is further improved.

Example 2:

see fig. 3-7. The embodiment describes a silencer, which comprises an outer casing, wherein a first partition plate 200, a second partition plate 300, a third partition plate 400, a fourth partition plate 500 and a fifth partition plate 600 are sequentially arranged between one end and the other end in the outer casing to divide the interior of the outer casing into a first silencing chamber, a second silencing chamber, a third silencing chamber 130, a fourth silencing chamber 140, a fifth silencing chamber 150 and a sixth silencing chamber 160, an air inlet 131 is arranged on the outer casing of the third silencing chamber 130, a first vent pipe 310 is arranged on the second partition plate 300, one end of the first vent pipe 310 is arranged on the first partition plate 200, the other end of the first vent pipe 310 is arranged on the third partition plate 400, a plurality of first air inlet holes 311 are arranged on the first vent pipe 310 in the third silencing chamber 130, a plurality of first air outlet holes 312 are arranged on the first vent pipe 310 in the second silencing chamber 120, a plurality of second air outlet pipes 210 for communicating the first silencing chamber 110 and the second silencing chamber 120 are arranged on the first partition plate 200, at least one third vent pipe 700 which sequentially penetrates through the third partition plate 400, the second partition plate 300 and the first partition plate 200 and is used for communicating the fourth anechoic chamber 140 with the first anechoic chamber 110 is arranged in the outer shell body, a fourth vent pipe 510 is arranged on the fourth partition plate 500, one end of the fourth vent pipe 510 is arranged on the third partition plate 400, the other end of the fourth vent pipe 510 is arranged on the fifth partition plate 600, a plurality of second air inlet holes 511 are arranged on the fourth vent pipe 510 located in the fourth anechoic chamber 140, a plurality of second air outlet holes 512 are arranged on the fourth vent pipe 510 located in the fifth anechoic chamber 150, a plurality of third air outlet holes 610 are arranged on the fifth partition plate 600, and an air outlet 161 is arranged on the shell of the sixth anechoic chamber 160.

In this embodiment, the above-mentioned contents are the same as those in embodiment 1, and no further description is given in this embodiment, and a difference between this embodiment and embodiment 1 is that specifically, a sound absorption filtering mechanism 151 is disposed between an inner wall of an outer shell of the fifth muffling chamber 150 and an outer wall of the fourth air pipe 510 located in the fifth muffling chamber 150. In this embodiment, the sound absorption filter 151 is specifically a sound absorption cotton, which has a good noise reduction capability for high-frequency noise, and the airflow mainly reduces the noise of low-frequency noise when colliding and flowing.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The above is only a preferred embodiment of the present invention, and it should be noted that the above preferred embodiment should not be considered as limiting the present invention, and the protection scope of the present invention should be subject to the scope defined by the claims. It will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the spirit and scope of the utility model, and these modifications and adaptations should be considered within the scope of the utility model.

Claims (10)

1. A silencer is characterized by comprising an outer shell, wherein a first partition plate (200), a second partition plate (300), a third partition plate (400), a fourth partition plate (500) and a fifth partition plate (600) are sequentially arranged between one end and the other end in the outer shell to divide the outer shell into a first silencing chamber (110), a second silencing chamber (120), a third silencing chamber (130), a fourth silencing chamber (140), a fifth silencing chamber (150) and a sixth silencing chamber (160), an air inlet (131) is formed in the outer shell of the third silencing chamber (130), a first ventilating pipe (310) is arranged on the second partition plate (300), one end of the first ventilating pipe (310) is installed on the first partition plate (200), the other end of the first ventilating pipe (310) is installed on the third partition plate (400), a plurality of first air inlet holes (311) are formed in the first ventilating pipe (310) in the third silencing chamber (130), a plurality of first vent holes (312) are formed in a first vent pipe (310) positioned in the second anechoic chamber (120), a plurality of second vent pipes (210) used for communicating the first anechoic chamber (110) with the second anechoic chamber (120) are arranged on the first partition plate (200), at least one third vent pipe (700) which sequentially penetrates through the third partition plate (400), the second partition plate (300) and the first partition plate (200) and is used for communicating the fourth anechoic chamber (140) with the first anechoic chamber (110) is arranged in the outer shell, a fourth vent pipe (510) is arranged on the fourth partition plate (500), one end of the fourth vent pipe (510) is arranged on the third partition plate (400), the other end of the fourth vent pipe (510) is arranged on the fifth partition plate (600), a plurality of second vent holes (511) are formed in the fourth vent pipe (510) positioned in the fourth anechoic chamber (140), and a plurality of second vent holes (512) are formed in the fourth vent pipe (510) positioned in the fifth anechoic chamber (150), a plurality of third exhaust holes (610) are formed in the fifth partition plate (600), and an exhaust port (161) is formed in the shell of the sixth silencing chamber (160).

2. The silencer device according to claim 1, wherein a fixing mechanism (800) is provided on an outer side wall of the outer housing, the fixing mechanism (800) is provided on the air inlet (131), and an air inlet through groove (810) communicated with the air inlet (131) is provided on the fixing mechanism (800).

3. A silencer according to claim 2, wherein the fixing mechanism (800) is provided with at least one fixing post (820), the side wall of the outer casing of the third silencing chamber (130) is provided with at least one first mounting hole (132), one end of each fixing post (820) is mounted on the fixing mechanism (800), and the other end of each fixing post (820) is mounted in the corresponding first mounting hole (132).

4. A silencer assembly according to claim 3, wherein the first snorkel (310) in the third chamber (130) has at least one second mounting hole (313) and at least one third mounting hole (314) corresponding to the second mounting hole (313), and each fixing post (820) is fitted to the first snorkel (310) through one of the second mounting holes (313) and one of the third mounting holes (314) corresponding to the second mounting hole (313) in turn.

5. A silencer according to claim 1, wherein a sound absorbing and filtering mechanism (151) is provided between the inner wall of the outer casing of the fifth chamber (150) and the outer wall of the fourth vent pipe (510) in the fifth chamber (150).

6. A silencer according to claim 1, wherein the outer casing includes an upper casing cover (170), a casing body (180), and a lower casing cover (190), one end of the casing body (180) is connected to the upper casing cover (170), the other end of the casing body (180) is connected to the lower casing cover (190), the air inlet (131) is located on an outer side wall of the casing body (180), and the air outlet (161) is located on the lower casing cover (190).

7. The silencer according to claim 1, wherein the exhaust port (161) is provided with an exhaust pipe (1610), the end surface of the exhaust pipe (1610) at one end outside the casing is an inclined surface, the end surfaces of the second ventilation pipes (210) at two ends are inclined surfaces, the end surface of the second ventilation pipe (210) in the second silencing chamber (120) faces the axial line of the casing, and the end surface of the second ventilation pipe (210) in the first silencing chamber (110) faces the inner side wall of the casing.

8. A silencer according to claim 1, wherein a fixing plate (121) is disposed in the second silencing chamber (120), an outer surface of the fixing plate (121) is connected to an inner wall of the outer casing, the fixing plate (121) is provided with a plurality of first fixing grooves (1210) and at least one second fixing groove (1211), each second ventilating pipe (210) disposed in the second silencing chamber (120) is installed in the first fixing groove (1210), each third ventilating pipe (700) disposed in the second silencing chamber (120) is installed in the second fixing groove (1211), and a relief portion (1212) is disposed in a middle portion of the fixing plate (121).

9. A silencer device according to claim 1, wherein the plurality of second intake holes (511) are located at a side away from the third intake pipe (700) to the fourth silencing chamber (140).

10. A silencer assembly according to claim 1, wherein said third plurality of exhaust ports (610) are arranged in a circumferential array on a fifth baffle (600), and wherein said fourth baffle (500) is provided with a third plurality of inlet ports (520) in a circumferential array.

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