CN214997859U

CN214997859U - Dustproof noise reduction silencer

Info

Publication number: CN214997859U
Application number: CN202121017656.6U
Authority: CN
Inventors: 蒋剑强; 王锡良; 付应中
Original assignee: Jiangsu Xuncheng Machinery Co ltd
Current assignee: Jiangsu Xuncheng Machinery Co ltd
Priority date: 2021-05-12
Filing date: 2021-05-12
Publication date: 2021-12-03
Anticipated expiration: 2031-05-12

Abstract

The utility model relates to a silencer of making an uproar falls in preventing dust, have open-ended barrel and detachable end cover of installing at the barrel opening part including one end, the barrel inner wall is equipped with the amortization cotton, barrel one end is equipped with the intake pipe, and the other end is equipped with the outlet duct, still be equipped with the baffle in the barrel, two at least buffering cavities are separated out through the baffle to the barrel is inside, run through the honeycomb duct that is equipped with two adjacent buffering cavities of intercommunication on the baffle, the intake pipe is located the inside air inlet department cover of barrel and is equipped with the dust cover, it is equipped with the lifter to connect on the dust cover, the lifter is connected with control assembly, goes up and down through control assembly control lifter. The utility model discloses a predominant use provides a rational in infrastructure, and noise elimination and noise reduction effect is showing stably, has dustproof function, long service life's the silencer of making an uproar of falling of preventing dust.

Description

Dustproof noise reduction silencer

Technical Field

The utility model relates to a silencer especially relates to a silencer of making an uproar falls in preventing dust.

Background

The resistive silencer is an absorbing silencer, which converts sound energy into heat energy and dissipates the heat energy due to friction when sound waves are transmitted in porous sound-absorbing materials, thereby achieving the aim of silencing. The muffling properties of the material are similar to the electrical resistance in an electrical circuit, which is known as electrical power dissipation. Generally speaking, the resistive muffler has good medium-high frequency noise elimination performance and poor low-frequency noise elimination performance.

The reactive muffler is different from a resistive muffler, does not use sound absorption materials, and reduces the sound energy radiated outwards by the muffler through reflection, interference and resonance sound absorption caused by the impedance change in the sound transmission process due to the sudden change of the section of the pipeline, thereby achieving the purpose of sound elimination. From an energy perspective, resistive mufflers use energy conversion to reduce the acoustic energy at the muffler outlet, while resistive mufflers mainly use acoustic energy transfer to reduce the acoustic energy at the muffler outlet. The reactive muffler has good suppression effect on middle and low frequency noise, but has poor high-frequency noise elimination performance.

The impedance composite muffler overcomes the defects of a reactive muffler and a resistive muffler, and the muffling performance of the impedance composite muffler and the frequency spectrum characteristic of automobile exhaust noise can be kept symmetrical well, so that the impedance composite muffler is widely applied to an automobile exhaust system. The silencer is at the in-service use in-process, because mix with many dusts, impurity etc. usually in the gas, the silencer is after long-time the use, and dust impurity etc. in the gas can slowly adsorb on silencer inner structure, influence noise elimination noise reduction effect, reduce life.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to provide a silencer of making an uproar falls in sound attenuation noise reduction effect is showing stably, has dustproof function, long service life's dustproof silencer of making an uproar that falls.

In order to solve the above problem, the utility model discloses the technical scheme who adopts as follows:

the utility model provides a silencer of making an uproar falls in preventing dust, has open-ended barrel and the detachable end cover of installing at the barrel opening part including one end, the barrel inner wall is equipped with the amortization cotton, barrel one end is equipped with the intake pipe, and the other end is equipped with the outlet duct, intake pipe one end runs through barrel lateral wall rear portion part and stretches into to inside the barrel, still be equipped with the baffle in the barrel, two at least buffering cavities are separated out through the baffle to the barrel is inside, run through the honeycomb duct that is equipped with two adjacent buffering cavities of intercommunication on the baffle, the intake pipe is located the inside air inlet department cover of barrel and is equipped with the dust cover, it is equipped with the lifter to connect on the dust cover, the lifter is connected with control assembly, goes up and down through control assembly control lifter control.

Furthermore, a taper hole is formed in the flow guide pipe, and one end, close to the air inlet pipe, of the taper hole is a small end.

Furthermore, the partition plates are distributed at intervals, and the three flow guide pipes fixedly connected to the partition plates are distributed in a staggered manner.

Further, the control assembly comprises a rotating handle, a connecting rod and a gear, the connecting rod is rotatably installed on the end cover, one end of the connecting rod is fixedly connected with the rotating handle, the other end of the connecting rod penetrates through the end cover and is fixedly connected with the gear, the gear is meshed with a rack correspondingly arranged on the lifting rod and is connected with the rack, the lifting rod is in sliding fit with a guide rail fixedly arranged on the inner side of the end cover, the rotating handle rotates and drives the gear to rotate through the connecting rod, and then the lifting rod meshed with the gear is driven to move upwards or downwards to drive the dust cover to move upwards or downwards, when the lifting rod moves upwards until the top of the dust cover abuts against the inner wall of the barrel around the air inlet pipe, the rotating handle is connected with the end cover through the inserting column to achieve circumferential fixing.

Furthermore, the inserting column is movably installed in a through hole correspondingly formed in the rotating handle and can move linearly along the axial direction of the rotating handle, an external thread is formed in one end of the inserting column, and a threaded hole matched with the external thread at one end of the inserting column is correspondingly formed in the end cover.

Furthermore, a sound absorption layer is laid on the surface of the partition plate.

Further, the dust cover is connected with the lifting rod through bolts or buckles.

Compared with the prior art, the beneficial effects of the utility model reside in that: the utility model discloses in divide into different buffer chamber with the silencer barrel inside through setting up the baffle to communicate through the honeycomb duct, realize the multiple attenuation and the weakening of sound wave, and process into the bell mouth with the hole in the honeycomb duct, further improve the diffusion effect, cooperate the amortization cotton and inhale the sound layer combined action again, the noise elimination noise reduction effect is showing; in addition, the dust cover convenient to disassemble is additionally arranged at the air inlet pipe, impurity dust in the air is filtered, the noise elimination effect is prevented from being influenced by the fact that the dust cover is attached to each structure after entering the silencer cylinder, and the noise elimination effect of the silencer is guaranteed to be stable and long-acting.

Drawings

Fig. 1 is a schematic structural view of a dust-proof noise-reducing muffler of the present invention;

FIG. 2 is a schematic view of a portion A of FIG. 1;

wherein, 1, a cylinder body; 2. an air inlet pipe; 3. an end cap; 31. a guide rail; 4. a dust cover; 5. a partition plate; 6. a flow guide pipe; 7. an air outlet pipe; 8. a control component; 81. rotating the handle; 811. inserting a column; 82. a connecting rod; 83. a gear; 9. a lifting rod; 10. a buffer chamber.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

It should be noted that, in the description of the technical solutions of the present invention, some directional words, such as "front", "rear", "upper", "lower", "top", "bottom", "inner", "outer", etc., used for clearly describing the technical features of the present invention are all in terms of the orientation of the drawings of the present invention.

Examples

As shown in fig. 1 and fig. 2, the dust-proof noise-reducing muffler of the present embodiment includes a cylinder 1 having an opening at one end and an end cap 3 detachably mounted at the opening of the cylinder 1, and the detachable connection structure between the end cap 3 and the cylinder 1 can be realized by bolt connection, clamping connection or snap connection in the prior art. In order to improve the sealing performance between the end cover 3 and the cylinder 1, the edge of the end cover 3 is bent and coated on the outer wall of the cylinder 1 in the embodiment (not shown). The inner wall of the cylinder body 1 is provided with silencing cotton for absorbing sound and reducing noise, one end of the cylinder body 1 is provided with an air inlet pipe 2, and the air inlet pipe 2 is used for communicating equipment needing exhaust and noise elimination, such as an internal combustion engine, a fan or other equipment; the other end of the cylinder body 1 is provided with an air outlet pipe 7, one end of the air inlet pipe 2 penetrates through the rear part of the side wall of the cylinder body 1 and extends into the cylinder body 1, a partition plate 5 is further arranged in the cylinder body 1, at least two buffer chambers 10 are separated from the inside of the cylinder body 1 through the partition plate 5, and a flow guide pipe 6 for communicating the two adjacent buffer chambers 10 is arranged on the partition plate 5 in a penetrating mode.

Specifically, be equipped with the bell mouth in the honeycomb duct 6 in this embodiment, the one end that is close to intake pipe 2 on the bell mouth is the osculum end, and the one end of keeping away from intake pipe 2 is the macrostoma end, and the microstoma end bore is the half of macrostoma end port diameter. The gas enters the buffer chamber 10 in the cylinder 1 from the gas inlet pipe 2 and then enters the next buffer chamber 10 through the tapered hole of the draft tube 6. Compared with the traditional structure in which the draft tube 6 adopts cylindrical holes with consistent calibers, the draft tube 6 in the embodiment adopts tapered holes, and gas enters from the small end and then is discharged from the large end, and is diffused once, so that sound energy can be further lost, and the noise elimination effect is improved.

Specifically, 5 interval distributions of baffle have threely in this embodiment, and the honeycomb duct 6 that links firmly on the three baffle 5 is crisscross distribution, adopts this kind of structure, and the sound wave just can get into next buffer chamber 10 from honeycomb duct 6 after abundant reflection, interference in buffer chamber 10, through diffusion, reflection and the interference back of relapse, the sound wave is weakened greatly, at the absorption through amortization cotton and sound absorbing layer, can be in order to play apparent noise cancelling effect. The surface of each clapboard 5 is coated with a sound absorption layer. The sound absorbing layer adopts superfine glass fiber cotton as a sound absorbing material, and has good sound absorbing and noise eliminating effects.

In order to solve the problem that 1 inner structure of barrel accumulated the dust easily and was difficult for the clearance, this embodiment is located the inside air inlet department cover of barrel 1 and is equipped with dust cover 4 at intake pipe 2, dust cover 4 is U type structure, the top of U type structure supports and leans on around intake pipe 2 during the use, gas need filter through dust cover 4 earlier when getting into in the barrel 1, the structure among the prior art is adopted in the concrete constitution of dust cover 4, only need can realize dustproof filterable function. When gas passes through the gas inlet pipe 2, dust and impurities in the gas are intercepted and adsorbed by the dust cover 4, so that impurities entering the cylinder body 1 are greatly reduced, and the noise elimination and reduction effect of the silencer is not influenced. When dust impurity on dust cover 4 accumulates to a certain extent, in order to avoid influencing gaseous passing through, can dismantle dust cover 4 and wash or change.

Because gaseous can exert certain effort to dust cover 4 when passing through, in order to resist this effort, this embodiment can be on dust cover 4 with the position installation permanent magnet that barrel 1 inner wall contacted, and the corresponding position of barrel 1 inner wall and dust cover 4 adopts the material that has the ferromagnetism, like this when dust cover 4 supports and leans on barrel 1 inner wall, can offset the effort that partial gas was applyed through magnetic attraction, increase the compactness and the reliability of being connected between dust cover 4 and the barrel 1 inner wall.

The specific mounting structure of the dust cover 4 in this embodiment is as follows: the dust cover 4 is connected and is equipped with lifter 9, is bolted connection or buckle connection between dust cover 4 and the lifter 9, makes things convenient for the dismouting of dust cover 4 to change, and concrete connected mode adopts prior art's structure, and it is no longer repeated here. The lifting rod 9 is connected with the control component 8, and the lifting rod 9 is controlled to lift through the control component 8. Control assembly 8 includes twist grip 81, connecting rod 82 and gear 83, and connecting rod 82 is rotatable to be installed on end cover 3, and connecting rod 82 one end links firmly with twist grip 81, and the connecting rod 82 other end runs through end cover 3 and links firmly with gear 83, and the gear 83 is connected with the rack toothing that corresponds the seting up on the lifter 9, lifter 9 with set firmly the guide rail 31 sliding fit in end cover 3 inboard, guide rail 31 bottom is closed design, prevents that lifter 9 from moving down the cross position. The twist grip 81 rotates and drives the gear 83 to rotate through the connecting rod 82, thereby drives the lifting rod 9 meshed with the gear 83 to move upwards or downwards to drive the dust cover 4 to move upwards or downwards, when the lifting rod 9 moves upwards until the top of the dust cover 4 is supported on the inner wall of the barrel body 1 around the air inlet pipe 2, the twist grip 81 is connected with the end cover 3 through the inserting column 811 to realize circumferential fixation, and further the position fixation of the dust cover 4 is realized. Specifically, insert post 811 movable mounting correspond in the through-hole of seting up on twist grip 81 and can follow twist grip 81's axial and do rectilinear movement, insert the one end of post 811 and seted up the external screw thread, correspond on end cover 3 and be equipped with and insert the screw hole of the external screw thread looks adaptation of post 811 one end, insert the external diameter that is equipped with the one end of external screw thread on the post 811 and be greater than the external diameter of through-hole on twist grip 81, can prevent like this to insert post 811 and break away from the through-hole.

After the silencer uses a period, dust accumulation to a certain extent in the dust cover 4, for avoiding influencing exhaust and noise elimination effect, need dismantle dust cover 4 and wash. Firstly, one end of the insert post 811 is taken out from the threaded hole of the end cover 3 in a rotating way, then the rotating handle 81 is rotated, so as to drive the gear 83 connected with the rotating handle, and the lifting rod 9 is driven to move downwards through the meshing transmission connection of the gear rack, so as to drive the dust cover 4 to move downwards until the top of the dust cover 4 is lower than the bottom of the air inlet pipe 2, at this time, the end cover 3 can be detached from the cylinder body 1, then the dust cover 4 is detached from the lifting rod 9 for cleaning or replacing, after the cleaning or replacing of the dust cover 4 is completed, the dust cover 4 is installed on the lifting rod 9, then the end cover 3 is installed on the cylinder body 1, then the rotating handle 81 is rotated reversely, so as to drive the gear 83 connected with the dust cover, and the lifting rod 9 is driven to move upwards through the meshing transmission connection of the gear rack until the top of the dust cover 4 is abutted against the inner wall of the cylinder body 1, and finally, one end of the insert post 811 is screwed into the threaded hole of the end cover 3, the installation is completed and the muffler can continue to work.

The utility model discloses a dustproof noise reduction silencer divides into different buffer chamber 10 through setting up baffle 5 inside silencer barrel 1 to communicate through honeycomb duct 6, realize the multiple attenuation and the weakening of sound wave, and process into the bell mouth with the hole in honeycomb duct 6, further improve the diffusion effect, and the combined action of amortization cotton and sound absorbing layer is deuterogamy, and the noise reduction effect of eliminating the noise is showing; in addition, the dust cover 4 which is convenient to detach is additionally arranged at the air inlet pipe 2 to filter impurity dust in the air, so that the noise elimination effect is prevented from being influenced by the attachment of the dust cover to various structures after the dust cover enters the silencer barrel 1, and the stability and the long-term effect of the noise elimination effect of the silencer are ensured.

Various other modifications and changes may be made by those skilled in the art based on the above-described technical solutions and concepts, and all such modifications and changes are intended to fall within the scope of the claims.

Claims

1. The utility model provides a silencer of making an uproar falls in dustproof which characterized in that: the noise reduction barrel comprises a barrel body (1) with an opening at one end and an end cover (3) detachably arranged at the opening of the barrel body (1), wherein noise reduction cotton is arranged on the inner wall of the barrel body (1), an air inlet pipe (2) is arranged at one end of the barrel body (1), an air outlet pipe (7) is arranged at the other end of the barrel body, one end of the air inlet pipe (2) penetrates through the rear part of the side wall of the barrel body (1) and extends into the barrel body (1), a partition plate (5) is further arranged in the barrel body (1), at least two buffer chambers (10) are separated from the interior of the barrel body (1) through the partition plate (5), a guide pipe (6) communicating two adjacent buffer chambers (10) is arranged on the partition plate (5) in a penetrating manner, a dust cover (4) is arranged at the air inlet of the air inlet pipe (2) positioned in the barrel body (1), a lifting rod (9) is connected to the dust cover (4), and the lifting rod (9) is connected with a control component (8), the lifting rod (9) is controlled to lift through the control component (8).

2. The dust-proof noise-reducing muffler according to claim 1, wherein: a taper hole is formed in the flow guide pipe (6), and one end, close to the air inlet pipe (2), of the taper hole is a small end.

3. The dust-proof noise-reducing muffler according to claim 2, wherein: the partition plates (5) are distributed at intervals, and the three flow guide pipes (6) fixedly connected with the partition plates (5) are distributed in a staggered manner.

4. The dust-proof noise-reducing muffler according to claim 1, wherein: the control assembly (8) comprises a rotating handle (81), a connecting rod (82) and a gear (83), the connecting rod (82) is rotatably installed on the end cover (3), one end of the connecting rod (82) is fixedly connected with the rotating handle (81), the other end of the connecting rod (82) penetrates through the end cover (3) and is fixedly connected with the gear (83), the gear (83) is meshed with a rack correspondingly arranged on the lifting rod (9), the lifting rod (9) is in sliding fit with a guide rail (31) fixedly arranged on the inner side of the end cover (3), the rotating handle (81) rotates and drives the gear (83) to rotate through the connecting rod (82), so that the lifting rod (9) meshed with the gear (83) is driven to move upwards or downwards to drive the dust cover (4) to move upwards or downwards, when the lifting rod (9) moves upwards until the top of the dust cover (4) abuts against the inner wall of the barrel body (1) around the air inlet pipe (2), the rotating handle (81) is connected with the end cover (3) through the inserting column (811) to realize circumferential fixation.

5. The dust and noise reducing muffler of claim 4, wherein: insert post (811) movable mounting and can make rectilinear movement along the axial of twist grip (81) in the through-hole that corresponds the seting up on twist grip (81), the external screw thread has been seted up to the one end of inserting post (811), correspond on end cover (3) and be equipped with the screw hole with the external screw thread looks adaptation of inserting post (811) one end.

6. The dust and noise reducing muffler of claim 3, wherein: the surface of the clapboard (5) is laid with a sound absorption layer.

7. The dust-proof noise-reducing muffler according to claim 1, wherein: the dust cover (4) is connected with the lifting rod (9) through bolts or buckles.