CN215445537U

CN215445537U - Impedance composite silencer

Info

Publication number: CN215445537U
Application number: CN202121906956.XU
Authority: CN
Inventors: 叶雨
Original assignee: Changzhou Taida Acoustic Technology Co ltd
Current assignee: Changzhou Taida Acoustic Technology Co ltd
Priority date: 2021-08-13
Filing date: 2021-08-13
Publication date: 2022-01-07
Anticipated expiration: 2031-08-13

Abstract

The utility model discloses an impedance composite muffler, which comprises a shell, wherein a sound inlet pipe is fixed at the left end of the shell, a sound outlet pipe is fixed at the right end of the shell, a silencing assembly for silencing is arranged in the shell, the impedance composite muffler also comprises a cleaning barrel, the cleaning barrel is positioned at the left end of the sound inlet pipe, the cleaning barrel is hermetically connected with the sound inlet pipe, the cleaning barrel comprises a protective cover positioned at the left end of the cleaning barrel and an electrostatic dust removal module positioned in the cleaning barrel, the silencing assembly is positioned in the shell, the silencing assembly comprises first silencing sheets fixed at two ends of an inner cavity of the shell, second silencing sheets fixed at opposite sides of the two groups of first silencing sheets and a plurality of groups of fixing plates fixed between the two groups of second silencing sheets, dust is effectively prevented from entering the shell through the cleaning barrel, and accordingly, a large amount of dust can be prevented from gathering in the shell, the silencing effect of the silencer is influenced, and the service life of the silencer is effectively prolonged.

Description

Impedance composite silencer

Technical Field

The utility model relates to the technical field of silencers, in particular to an impedance composite silencer.

Background

The impedance composite muffler refers to a muffler in which sound absorption and sound reflection are appropriately combined. The silencer has the characteristics of eliminating middle and high frequency noise by a resistive silencer and eliminating low and medium frequency noise by a resistive silencer, and has a broadband silencing effect.

The present patent publication No. CN 212643888U's Chinese utility model discloses an impedance composite muffler, through the sound absorbing layer, first noise damping piece, the second noise damping piece, the third noise damping piece, first damping noise damping board, the second damping noise damping board, first noise damping net, the second noise damping net, first perforation, the second is perforated, the design of third perforation and foam-rubber cushion, can offset and weaken the noise through multi-level multi-angle, thereby eliminate the noise, this design can carry out multiple reflection with the noise, and simultaneously, the inorganic foam layer that sets up in the sound absorbing layer, the material on inorganic fiber layer and organic fiber layer, can absorb partial noise, thereby weaken the noise, improve the efficiency of eliminating the noise, user's use has been convenient for.

However, when the silencer is used, the inside of the silencer is not convenient to clean, and after the silencer is used for a long time, a large amount of dust is accumulated in the silencer, so that the silencing effect of the silencer is affected.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to an impedance composite muffler to solve the above problems of the related art.

In order to achieve the purpose, the utility model provides the following technical scheme:

an impedance composite muffler comprises a shell, a sound inlet pipe and a sound outlet pipe, wherein the left end of the shell is fixed with a sound inlet pipe, the right end of the shell is fixed with a sound outlet pipe, a silencing assembly for silencing is arranged in the shell, and the impedance composite muffler also comprises a cleaning barrel;

the cleaning barrel is positioned at the left end of the sound inlet pipe and is in sealed connection with the sound inlet pipe, and the cleaning barrel comprises a protective cover positioned at the left end of the cleaning barrel and an electrostatic dust removal module positioned in the cleaning barrel;

the silencing assembly is positioned in the shell and comprises first silencing pieces fixed at two ends of an inner cavity of the shell, second silencing pieces fixed on one opposite sides of the two groups of first silencing pieces and a plurality of groups of fixing plates fixed between the two groups of second silencing pieces.

As a further scheme of the utility model: the left end fixed surface of protection casing has the filter screen that is used for filtering impurity, the inboard of protection casing is equipped with the internal thread, the outside of a clearance section of thick bamboo is equipped with the external screw thread with internal thread assorted.

As a further scheme of the utility model: the electrostatic dust removal module is detachably connected with the inner wall of the cleaning barrel, and a sealing cover convenient for taking out the electrostatic dust removal module is arranged on the surface of the cleaning barrel.

As a further scheme of the utility model: the surface of the first silencing piece is provided with a first through hole, the surface of the second silencing piece is provided with a second through hole, and the first through hole and the second through hole are arranged in a staggered mode.

As a further scheme of the utility model: the fixed plate with the inner wall fixed connection of shell, the surface of fixed plate all is equipped with the amortization cotton that is used for the amortization, and the multiunit the staggered arrangement mutually of fixed plate to form Z style of calligraphy passageway.

As a further scheme of the utility model: and a sound insulation layer for sound insulation is fixed on the inner wall of the shell.

As a still further scheme of the utility model: the first silencing sheet and the second silencing sheet are both streamlined.

Compared with the prior art, the utility model has the beneficial effects that:

according to the utility model, the cleaning barrel is arranged, so that air entering the shell can be filtered under the action of the filter screen, larger impurities contained in the air can be effectively prevented from entering the shell, smaller dust in the air can be adsorbed by the electrostatic dust removal module, and the dust is effectively prevented from entering the shell, so that a large amount of dust can be prevented from being accumulated in the shell, the noise elimination effect of the silencer is prevented from being influenced, and the service life of the silencer is effectively prolonged.

The silencer is provided with the internal thread and the external thread, so that the protective cover is convenient to take down, the filter screen is convenient to replace or clean, the electrostatic dust removal module is convenient to replace or clean by the sealing cover, the cleaning effect of the filter screen and the electrostatic dust removal module is effectively improved, and the silencing effect of the silencer is further improved.

According to the utility model, the plurality of groups of fixing plates are arranged, the plurality of groups of fixing plates are staggered and form the Z-shaped channel, the Z-shaped channel can reflect noise for many times and absorb the noise through the silencing cotton, and the first silencing sheet and the second silencing sheet which are arranged in a streamline manner can further improve the silencing effect of the silencer, and the silencer is simple in structure and convenient to use.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural view of the internal thread and the external thread of the present invention.

FIG. 3 is a schematic structural diagram of an electrostatic precipitator module according to the present invention.

Fig. 4 is a schematic view of the internal structure of the housing of the present invention.

Wherein: 1. a housing; 2. a sound inlet pipe; 3. a sound outlet pipe; 4. cleaning the cylinder; 5. an internal thread; 6. an external thread; 7. a protective cover; 8. a filter screen; 9. an electrostatic dust removal module; 10. a sealing cover; 11. a first silencing sheet; 12. a first through hole; 13. a second silencing sheet; 14. a second through hole; 15. a fixing plate; 16. silencing cotton; 17. and a sound insulation layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

Referring to fig. 1-4, in the embodiment of the present invention, an impedance composite muffler includes a housing 1, a sound inlet pipe 2 is fixed at a left end of the housing 1, a sound outlet pipe 3 is fixed at a right end of the housing 1, a silencing assembly for silencing is disposed inside the housing 1, and a cleaning barrel 4 is further included;

the cleaning barrel 4 is positioned at the left end of the sound inlet pipe 2, the cleaning barrel 4 is connected with the sound inlet pipe 2 in a sealing mode, the cleaning barrel 4 comprises a protective cover 7 positioned at the left end of the cleaning barrel 4 and an electrostatic dust removal module 9 positioned in the cleaning barrel 4, the cleaning barrel 4 can prevent a large amount of dust from gathering in the shell 1, the noise elimination effect of the silencer is affected, and the service life of the silencer is effectively prolonged;

the amortization subassembly is located the inside of shell 1, the amortization subassembly is including being fixed in first amortization piece 11 at 1 inner chamber both ends of shell, being fixed in the relative second amortization piece 13 of one side of two sets of first amortization pieces 11, being fixed in the multiunit fixed plate 15 between two sets of second amortization pieces 13, through first amortization piece 11, second amortization piece 13, can further improve the noise cancelling effect of this muffler, simple structure, convenient to use.

The left end fixed surface of protection casing 7 is equipped with filter screen 8 that is used for filtering impurity, the inboard of protection casing 7 is equipped with internal thread 5, the outside of a clearance section of thick bamboo 4 be equipped with internal thread 5 assorted external screw thread 6, through being equipped with internal thread 5 and external screw thread 6, be convenient for take off protection casing 7 to be convenient for change or clear up filter screen 8.

The electrostatic dust removal module 9 with the connection can be dismantled to the inner wall of a clearance section of thick bamboo 4, the surface of a clearance section of thick bamboo 4 is equipped with the sealed lid 10 of being convenient for take out electrostatic dust removal module 9, through being equipped with sealed lid 10, is convenient for change or clear up electrostatic dust removal module 9 to the effectual clearance effect that improves electrostatic dust removal module 9.

The surface of the first silencing piece 11 is provided with a first through hole 12, the surface of the second silencing piece 13 is provided with a second through hole 14, and the first through hole 12 and the second through hole 14 are arranged in a staggered mode.

The fixed plate 15 with the inner wall fixed connection of shell 1, the surface of fixed plate 15 all is equipped with the amortization cotton 16 that is used for the amortization, and the multiunit the fixed plate 15 sets up of staggering mutually to form Z style of calligraphy passageway, Z style of calligraphy passageway can carry out a lot of reflections to the noise, and absorb the noise through amortization cotton 16.

The inner wall of shell 1 is fixed with the puigging 17 that is used for giving sound insulation, and the setting of puigging 17 is effectual avoided the noise to pass the outside that shell 1 transmitted to shell 1.

Example 2

Referring to fig. 1-4, the difference from embodiment 1 is: the first silencing piece 11 and the second silencing piece 13 are both in a streamline shape, and the first silencing piece 11 and the second silencing piece 13 which are in the streamline shape can further improve the silencing effect of the silencer.

The working principle of the utility model is as follows:

when the silencer is used, firstly, air passes through the filter screen 8 to enter the inside of the cleaning barrel 4, the filter screen 8 can filter larger impurities in the air, and the electrostatic dust removal module 9 can adsorb smaller dust in the air, so that a large amount of dust can be prevented from being gathered inside the shell 1, the silencing effect of the silencer can be prevented from being influenced, the service life of the silencer is effectively prolonged, then, the air passes through the sound inlet pipe 2 to enter the inside of the shell 1 and sequentially passes through the first through hole 12 and the second through hole 14, the first through hole 12 and the second through hole 14 absorb noise, the Z-shaped channels are formed by staggering the plurality of groups of fixing plates 15 and can reflect the noise for multiple times, the noise is absorbed by the silencing cotton 16, the silencing effect of the silencer is further improved, the structure is simple, and the silencer is convenient to use.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof.

Claims

1. An impedance composite muffler comprises a shell (1), wherein a sound inlet pipe (2) is fixed at the left end of the shell (1), a sound outlet pipe (3) is fixed at the right end of the shell (1), and a silencing assembly for silencing is arranged in the shell (1), and is characterized by further comprising a cleaning barrel (4);

the cleaning barrel (4) is positioned at the left end of the sound inlet pipe (2), the cleaning barrel (4) is connected with the sound inlet pipe (2) in a sealing manner, and the cleaning barrel (4) comprises a protective cover (7) positioned at the left end of the cleaning barrel (4) and an electrostatic dust removal module (9) positioned in the cleaning barrel (4);

the noise reduction assembly is positioned in the shell (1) and comprises first noise reduction sheets (11) fixed at two ends of an inner cavity of the shell (1), second noise reduction sheets (13) fixed on one opposite sides of the two groups of first noise reduction sheets (11) and a plurality of groups of fixing plates (15) fixed between the two groups of second noise reduction sheets (13).

2. The impedance composite muffler is characterized in that a filter screen (8) for filtering impurities is fixed on the surface of the left end of the protective cover (7), an internal thread (5) is arranged on the inner side of the protective cover (7), and an external thread (6) matched with the internal thread (5) is arranged on the outer side of the cleaning cylinder (4).

3. An impedance composite muffler, according to claim 1, characterized in that said electrostatic precipitator module (9) is removably connected to the inner wall of said cleaning cylinder (4), and the surface of said cleaning cylinder (4) is provided with a sealing cover (10) for facilitating the removal of the electrostatic precipitator module (9).

4. An impedance composite muffler according to claim 1, wherein the first silencing plate (11) is provided with a first through hole (12) on the surface thereof, the second silencing plate (13) is provided with a second through hole (14) on the surface thereof, and the first through hole (12) and the second through hole (14) are arranged in a staggered manner.

5. The impedance composite muffler according to claim 1, wherein the fixing plates (15) are fixedly connected with the inner wall of the outer shell (1), silencing cotton (16) for silencing is arranged on the surfaces of the fixing plates (15), and the fixing plates (15) are staggered to form a Z-shaped channel.

6. Impedance composite muffler, according to claim 1, characterized in that the inner wall of the outer shell (1) is fixed with a sound insulating layer (17) for sound insulation.

7. An impedance compound muffler according to claim 1, wherein the first and second muffling segments (11, 13) are streamlined.