CN219591104U

CN219591104U - Combined muffler

Info

Publication number: CN219591104U
Application number: CN202223468754.9U
Authority: CN
Inventors: 李爽; 申豪爽; 王思洋
Original assignee: Suzhou Topo Acoustics Technology Co ltd
Current assignee: Suzhou Topo Acoustics Technology Co ltd
Priority date: 2022-12-21
Filing date: 2022-12-21
Publication date: 2023-08-25
Anticipated expiration: 2032-12-21

Abstract

The utility model belongs to the field of silencing equipment, in particular to a composite silencer which comprises two mounting plates and a fixing frame fixedly arranged at the back of the mounting plates; the right side is communicated with one side of the front surface of the mounting plate, one side of the back of the mounting plate is fixedly connected with limiting rods through a sound absorbing mechanism, the number of the limiting rods is four, the four limiting rods are all positioned in the air inlet pipe, a fixing plate is fixedly connected between the front surfaces of the four limiting rods, and the back of the fixing plate is rotationally connected with a screw rod through a bearing; can filter dust and impurity in the intake pipe air through the filter, avoid impurity in the air directly to get into inhale the sound cotton inside, lead to causing to inhale the inside space of sound cotton and stop up after long-term use, influence the noise elimination effect, can reduce impurity entering inhale the sound cotton inside through the filter to can prolong the life who inhales the sound cotton, further can prolong the life of silencer.

Description

Combined muffler

Technical Field

The utility model relates to the field of silencing equipment, in particular to a composite silencer.

Background

The muffler is an important measure for eliminating aerodynamic noise by preventing sound transmission and allowing air flow to pass through, and it is an important measure for reducing noise in an air flow pipeline having noise transmission, and the muffler is a resistive muffler, or a resistive composite muffler, by using a pipeline with a sound absorption lining, a bend, a pipeline with suddenly changed sectional area, or other noise reducing devices such as pipelines with discontinuous acoustic impedance.

The resistive muffler is characterized in that the resistive muffler is made of a resistive sound absorbing material and is attached to the wall of a rigid pipeline through which sound waves propagate, and most of high-frequency sound waves can enter the material, so that sound waves are gradually consumed, the effect of the resistive muffler on high-frequency noise is good, the resistive muffler mainly bypasses a resonant cavity on the pipeline or causes the area of the pipeline to be suddenly changed, the sound waves with different frequencies are selective, the phenomena of reflection, interference and the like of the sound waves in the pipeline occur, the noise eliminating effect on low and medium frequency is good, the composite muffler is called as a resistive composite muffler, the resistive composite muffler is a muffler which properly combines sound absorption and sound reflection, and the resistive muffler has the characteristic of eliminating low and medium frequency noise and has the broadband noise eliminating effect;

because the combined type silencer has two characteristics of the resistance silencer and the resistance silencer, a silencing plate and sound absorbing cotton are usually arranged in the combined type silencer, but because the combined type silencer needs gas flow control when noise is eliminated, and more dust and impurities are contained in air, the conventional combined type silencer generally does not have the function of filtering dust in air, if the air directly enters the combined type silencer, the dust and the impurities in the air are attached to the silencing plate, the sound absorbing cotton and other silencing materials in the combined type silencer, and the dust and the impurities in the air gradually block the pores of the sound absorbing cotton and other silencing materials, so that the silencing effect is influenced, and meanwhile, the service life of the sound absorbing cotton and other silencing materials is shortened.

Disclosure of Invention

In order to overcome the defects in the prior art and solve the problems, the utility model provides a composite muffler.

The technical scheme adopted for solving the technical problems is as follows: the utility model relates to a composite muffler, which comprises two mounting plates and a fixing frame fixedly arranged at the back of the mounting plates; right side positive one side intercommunication of mounting panel has the intake pipe, right side mounting panel back one side is through inhaling the sound mechanism fixedly connected with gag lever post, the quantity of gag lever post is provided with four, four the gag lever post all is located the inside of intake pipe, four fixedly connected with fixed plate between the front of gag lever post, the back of fixed plate is rotated through the bearing and is connected with the lead screw, the back of lead screw runs through the right side in proper order mounting panel, inhale sound mechanism and right side fixed frame and fixedly connected with screw, the surface threaded connection of lead screw has the screw thread piece, the surface sliding connection of the front of screw thread piece through slide hole and gag lever post, the surface joint of screw thread piece has the filter.

Preferably, the front of the filter plate is fixedly connected with a riser on two sides of the threaded block, and the two sides of the front of the threaded block are fixedly connected with a spigot plate.

Preferably, one side of the vertical plate is slidably connected with a pin rod matched with the jack plate through a sliding hole, and one side of the outer surface of the pin rod is fixedly connected with the vertical plate through a spring.

Preferably, the sound absorbing mechanism comprises a sound absorbing frame, the bottom of the sound absorbing frame is fixedly connected with the right side of the back of the mounting plate, the front surface of the sound absorbing frame is provided with sound absorbing holes in the air inlet pipe, the back of the sound absorbing frame is provided with air outlet holes, and the inside of the sound absorbing frame is filled with sound absorbing cotton.

Preferably, one side of the fixed frame on the right side is communicated with an air outlet pipe, and one end of the air outlet pipe sequentially penetrates through the left side of the fixed frame and the left side of the mounting plate and extends to the left side of the front surface of the mounting plate.

Preferably, the right side the back of mounting panel just is located fixedly connected with acoustical panel between acoustical frame and the outlet duct, the acoustical panel is located the right side the inside of fixed frame, and the quantity of acoustical panel is provided with a plurality of.

Preferably, the number of the sound absorbing holes is a plurality of, and the number of the air outlet holes is a plurality of.

Preferably, the filter plate is round and is matched with the air inlet pipe, and the outer surface of the filter plate is in sliding connection with the inner surface of the air inlet pipe.

The utility model has the advantages that:

according to the utility model, dust and impurities in air entering the air inlet pipe can be filtered through the filter plate, so that the situation that the impurities in the air directly enter the sound-absorbing cotton to cause the blockage of gaps in the sound-absorbing cotton after long-term use, the noise elimination effect is influenced is avoided, the impurities can be reduced to enter the sound-absorbing cotton through the filter plate, the service life of the sound-absorbing cotton can be prolonged, and the service life of the muffler can be further prolonged;

drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained from these drawings without inventive faculty for a person skilled in the art.

FIG. 1 is a perspective view of the present utility model;

FIG. 2 is a first cross-sectional perspective view of the present utility model;

FIG. 3 is a second cross-sectional perspective view of the present utility model;

FIG. 4 is a schematic view of the structural connection of the sound absorbing holes of the present utility model;

fig. 5 is a schematic structural connection diagram of the sound-absorbing cotton of the present utility model;

fig. 6 is a schematic diagram of structural connection of a filter plate according to the present utility model.

In the figure: 1. a mounting plate; 2. a fixed frame; 3. an air inlet pipe; 4. a limit rod; 5. a fixing plate; 6. a screw rod; 7. screwing the hand; 8. a screw block; 9. a filter plate; 10. a riser; 11. a receptacle plate; 12. a pin rod; 13. a sound attenuation frame; 14. a sound absorbing hole; 15. an air outlet hole; 16. sound absorbing cotton; 17. an air outlet pipe; 18. and (3) a sound attenuation plate.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1 to 6, a composite muffler includes two mounting plates 1 and a fixing frame 2 fixedly installed on the back of the mounting plates 1; the right side one side of the front surface of the mounting plate 1 is communicated with an air inlet pipe 3, one side of the back of the mounting plate 1 is fixedly connected with limit rods 4 through a sound absorbing mechanism, the number of the limit rods 4 is four, the four limit rods 4 are all positioned in the air inlet pipe 3, a fixed plate 5 is fixedly connected between the front surfaces of the four limit rods 4, the back of the fixed plate 5 is rotationally connected with a screw rod 6 through a bearing, the back of the screw rod 6 sequentially penetrates through the mounting plate 1, the sound absorbing mechanism and the right side of the fixed frame 2 and is fixedly connected with a screw rod 7, the outer surface of the screw rod 6 is in threaded connection with a threaded block 8, the front surface of the threaded block 8 is in sliding connection with the outer surface of the limit rod 4 through a sliding hole, and the outer surface of the threaded block 8 is clamped with a filter plate 9; because the combined type silencer possesses resistance silencer and resistance silencer's two kinds of characteristics simultaneously, its inside can install acoustical panel 18 and inhale the sound cotton 16 usually, but because combined type silencer is when the noise abatement, need the gas flow control, and contain more dust and impurity in the air, but current combined type silencer does not normally possess the filterable function of dust in the air, if it is inside the combined type silencer directly gets into, dust and impurity in the air then can adhere to on the acoustical panel 18 in combined type silencer inside and inhale sound cotton 16 etc. amortization material, long-time use, dust and impurity in the air can block up the hole of inhaling sound cotton 16 and other sound attenuation material gradually, and then can influence the effect of making an uproar falls in the sound, still can shorten simultaneously inhale the life of sound cotton 16 etc. noise attenuation material, during operation, through filter 9 can filter dust and impurity in the air of entering intake pipe 3, avoid impurity in the air directly to get into inhaling the sound cotton 16 inside, cause the inside space of inhaling the sound cotton 16 after long-term use, influence the noise elimination effect, can reduce through filter 9 and get into inhaling sound cotton 16 inside, thereby can further life can be prolonged to inhale sound cotton 16.

The front surface of the filter plate 9 is fixedly connected with vertical plates 10 at two sides of the threaded block 8, and the two sides of the front surface of the threaded block 8 are fixedly connected with inserting hole plates 11; in operation, the vertical plate 10 is positioned at one side of the jack plate 11, and one side of the jack plate 11 is provided with jacks matched with the pin rods 12.

One side of the vertical plate 10 is slidably connected with a pin rod 12 matched with the spigot plate 11 through a sliding hole, and one side of the outer surface of the pin rod 12 is fixedly connected with the vertical plate 10 through a spring; during operation, the filter plate 9 is conveniently fixedly installed and detached through the pin rod 12 and the spigot plate 11, the operation is simple, the use is convenient, meanwhile, the filter plate 9 can be gradually blocked by impurities after being used for a period of time, the use can be affected, and the filter plate can be conveniently removed for cleaning or replacement through the pin rod 12.

The sound absorbing mechanism comprises a sound absorbing frame 13, the bottom of the sound absorbing frame 13 is fixedly connected with the back of the mounting plate 1 on the right side, sound absorbing holes 14 are formed in the front face of the sound absorbing frame 13 and located in the air inlet pipe 3, air outlet holes 15 are formed in the back of the sound absorbing frame 13, and sound absorbing cotton 16 is filled in the sound absorbing frame 13; during operation, noise in the air conveniently enters the silencing frame 13 through the sound absorbing holes 14, and the noise can be absorbed to a certain extent through the sound absorbing cotton 16.

One side of the right fixed frame 2 is communicated with an air outlet pipe 17, and one end of the air outlet pipe 17 sequentially penetrates through the left fixed frame 2 and the left mounting plate 1 and extends to the front surface of the left mounting plate 1; when in operation, the air outlet pipe 17 is larger at one end communicated with the right fixed frame 2 and smaller at one end communicated with the left fixed frame 2.

A silencing plate 18 is fixedly connected to the back of the mounting plate 1 on the right side and between the silencing frame 13 and the air outlet pipe 17, the silencing plate 18 is positioned in the fixing frame 2 on the right side, and a plurality of silencing plates 18 are arranged; in operation, noise entering the inside of the fixed frame 2 can be reflected by the muffler plate 18, thereby performing a noise elimination process.

The number of the sound absorbing holes 14 is a plurality, and the number of the air outlet holes 15 is a plurality; when in operation, the air entering the silencing frame 13 is conveniently discharged through the air outlet hole 15.

The filter plate 9 is round and is matched with the air inlet pipe 3, and the outer surface of the filter plate 9 is in sliding connection with the inner surface of the air inlet pipe 3; in operation, the filter plate 9 is in the same shape as the air inlet pipe 3, so that the filter plate 9 can completely filter the air entering the air inlet pipe 3 when being positioned in the air inlet pipe 3.

The working principle is that the composite muffler has two characteristics of a resistant muffler and a resistive muffler, the interior of the composite muffler is provided with the sound-absorbing plate 18 and the sound-absorbing cotton 16, but the composite muffler needs gas flow control when eliminating noise, and the air contains more dust and impurities, but the existing composite muffler usually does not have the function of filtering dust in the air, if the air directly enters the interior of the composite muffler, the dust and impurities in the air can be adhered to the sound-absorbing plate 18, the sound-absorbing cotton 16 and other sound-absorbing materials in the interior of the composite muffler, and used for a long time, the dust and impurities in the air can gradually block the pores of the sound-absorbing cotton 16 and other sound-absorbing materials, thereby affecting the sound-absorbing and noise-reducing effects, and simultaneously shortening the service life of the sound-absorbing materials such as the sound-absorbing cotton 16, and the air can firstly pass through the filtration of the filter plate 9 when the air and the noise enter the air inlet pipe 3, so that the impurities contained in the air are reduced, the filtered air and noise can enter the silencing frame 13 through the sound absorbing holes 14, part of the noise can be absorbed through the sound absorbing cotton 16, the air can be discharged from the air outlet pipe 17 to the silencing frame 13 after passing through the sound absorbing cotton 16, the air enters the right fixed frame 2, the noise which is not completely absorbed can be reflected for many times in the right fixed frame 2 through the silencing plate 18, the noise can be gradually reduced after being reflected for many times on the silencing plate 18, the silencing purpose is achieved, the air after silencing can be discharged through the air outlet pipe 17, the filter plate 9 is blocked by the impurities after long-time use, when the filter plate 9 is cleaned or replaced, the screw rod 6 is directly rotated to drive the screw rod 6 to rotate, the screw plate and the filter plate 9 are driven to move on the limiting rod 4 until the filter plate 9 moves to the extreme end position of the screw rod 6, at this time, the pin 12 is pulled to separate from the spigot plate 11, so that the filter plate 9 can be taken out, otherwise, when the filter plate 9 needs to be installed, the filter plate 9 is directly aligned to the position of the threaded plate, then the filter plate 9 is moved to the outer surface of the threaded plate, and the pin 12 is pulled and loosened to enter the spigot plate 11, so that the fixation of the filter plate 9 can be completed.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims.

Claims

1. A compound muffler comprises two mounting plates (1) and a fixed frame (2) fixedly arranged on the back of the mounting plates (1); the method is characterized in that: right side positive one side intercommunication of mounting panel (1) has intake pipe (3), right side mounting panel (1) back one side is through inhaling sound mechanism fixedly connected with gag lever post (4), the quantity of gag lever post (4) is provided with four, four gag lever post (4) all are located the inside of intake pipe (3), four fixedly connected with fixed plate (5) between the front of gag lever post (4), the back of fixed plate (5) is connected with lead screw (6) through the bearing rotation, the back of lead screw (6) runs through the right side in proper order mounting panel (1), inhale sound mechanism and right side fixed frame (2) and fixedly connected with twist hand (7), the surface threaded connection of lead screw (6) has screw thread piece (8), the surface sliding connection of the front of screw thread piece (8) through slide hole and gag lever post (4), the surface joint of screw thread piece (8) has filter (9).

2. A composite muffler according to claim 1, wherein: the front of filter (9) just is located the both sides of screw thread piece (8) and all fixedly connected with riser (10), the both sides of screw thread piece (8) front all fixedly connected with spigot plate (11).

3. A composite muffler according to claim 2, wherein: one side of the vertical plate (10) is slidably connected with a pin rod (12) matched with the spigot plate (11) through a sliding hole, and one side of the outer surface of the pin rod (12) is fixedly connected with the vertical plate (10) through a spring.

4. A composite muffler according to claim 3, wherein: the sound absorption mechanism comprises a sound absorption frame (13), the bottom of the sound absorption frame (13) is fixedly connected with the right side of the back of the mounting plate (1), sound absorption holes (14) are formed in the front of the sound absorption frame (13) and located in the air inlet pipe (3), air outlet holes (15) are formed in the back of the sound absorption frame (13), and sound absorption cotton (16) is filled in the sound absorption frame (13).

5. A composite muffler according to claim 4, wherein: one side of the fixed frame (2) on the right side is communicated with an air outlet pipe (17), and one end of the air outlet pipe (17) sequentially penetrates through the fixed frame (2) on the left side and the mounting plate (1) on the left side and extends to the front surface of the mounting plate (1) on the left side.

6. A composite muffler according to claim 5, wherein: the right side the back of mounting panel (1) just is located fixedly connected with acoustical panel (18) between acoustical frame (13) and outlet duct (17), acoustical panel (18) are located the right side the inside of fixed frame (2), and the quantity of acoustical panel (18) is provided with a plurality of.

7. A composite muffler according to claim 6, wherein: the number of the sound absorbing holes (14) is multiple, and the number of the air outlet holes (15) is multiple.

8. A composite muffler according to claim 7, wherein: the filter plate (9) is round and is matched with the air inlet pipe (3), and the outer surface of the filter plate (9) is in sliding connection with the inner surface of the air inlet pipe (3).