CN218717344U

CN218717344U - Exhaust pipe silencing device

Info

Publication number: CN218717344U
Application number: CN202223045622.5U
Authority: CN
Inventors: 刘毅
Original assignee: Qinnai New Energy Technology Suzhou Co ltd
Current assignee: Qinnai New Energy Technology Suzhou Co ltd
Priority date: 2022-11-16
Filing date: 2022-11-16
Publication date: 2023-03-24
Anticipated expiration: 2032-11-16

Abstract

The utility model relates to the technical field of silencers, and discloses an exhaust pipe silencing device, which comprises a silencing pipe, wherein one end of the silencing pipe is provided with a connecting pipe, the other end of the silencing pipe is detachably sleeved with an end cover, the middle part of the inner cavity of the silencing pipe is fixedly sleeved with a silencing barrel, and the inner wall of the silencing pipe is provided with silencing cotton; one end of the silencing pipe, which is far away from the connecting pipe, is provided with a vent hole positioned at the periphery of the silencing barrel; an air exhaust channel is arranged in the middle of the end cover, and a protective net is arranged in the air exhaust channel; the inboard mid-mounting of protection network has fixed pipe, and the mid-mounting of fixed pipe has the spiral auger, and in the other end of spiral auger extended to a noise damping section of thick bamboo, and there was the clearance along the inner wall with a noise damping section of thick bamboo outer helical blade of spiral auger. The utility model discloses a cotton porous structure of amortization realizes the secondary consumption of sound wave energy, is favorable to improving whole noise cancelling effect, has wide market prospect, does benefit to the popularization.

Description

Exhaust pipe silencing device

Technical Field

The utility model relates to a muffler technical field specifically is an exhaust pipe silencing device.

Background

The vacuum pump silencer is used for reducing exhaust noise of a vacuum pump, and has the advantages of large noise reduction volume, small volume, light weight, convenience in installation and the like.

The prior Chinese patent with the granted publication number of CN215170624U discloses a silencer for a vacuum pump, which comprises a box body, a base, a sleeve I, a sleeve II, a pump body, an air inlet pipe and an air outlet pipe. However, the above-mentioned silencer only uses the sound insulation layer to perform silencing, and still has a problem of poor silencing effect, and therefore, we propose an exhaust pipe silencer.

SUMMERY OF THE UTILITY MODEL

In view of the above problems existing in the prior art, the utility model provides an exhaust pipe silencing device.

In order to achieve the purpose, the utility model provides an exhaust pipe silencing device, which comprises a silencing pipe, wherein one end of the silencing pipe is provided with a connecting pipe, the other end of the silencing pipe is detachably sleeved with an end cover, the middle part of the inner cavity of the silencing pipe is fixedly sleeved with a silencing barrel, and silencing cotton is arranged on the inner wall of the silencing pipe; one end of the silencing pipe, which is far away from the connecting pipe, is provided with a vent hole positioned at the periphery of the silencing barrel; an air exhaust channel is arranged in the middle of the end cover, and a protective net is arranged in the air exhaust channel; the inboard mid-mounting of protection network has fixed pipe, and the mid-mounting of fixed pipe has the spiral auger, and in the other end of spiral auger extended to a noise damping section of thick bamboo, and there was the clearance along the inner wall with a noise damping section of thick bamboo outer helical blade of spiral auger.

Preferably, the helical blade and the silencing barrel of the helical auger are both provided with air holes which are uniformly distributed.

Preferably, the main body of the fixing pipe is a circular ring, the circular ring is installed in the middle of the inner side face of the protective net, a triangular support is installed inside the circular ring, and the shaft end of the spiral auger is fixedly connected with the center of the triangular support.

Preferably, the silencing cotton is glass fiber silencing cotton or polyester fiber silencing cotton, and the surface of the silencing cotton is provided with a porous structure.

Preferably, the inner wall of the silencing cotton is provided with a wavy bulge.

Compared with the prior art, the utility model provides a blast pipe silencing device has following beneficial effect:

the utility model discloses after the assembly is in the exhaust vent department of vacuum pump, in the exhaust gets into a noise elimination section of thick bamboo via the connecting pipe, gaseous forward transport via the helical blade of spiral auger and the bleeder vent on it for the preliminary consumption of sound wave energy, it is intraductal that partial gas gets into the noise elimination by the bleeder vent on noise elimination section of thick bamboo surface simultaneously, the sound wave touches mutually with the amortization cotton, absorbed by the cotton porous structure of amortization, realize the secondary consumption of sound wave energy, be favorable to improving whole noise cancelling effect, wide market prospect has, do benefit to the popularization.

Drawings

Fig. 1 is a schematic front structural view of the present invention;

fig. 2 is a schematic sectional structure of the present invention;

FIG. 3 is a schematic cross-sectional view of the silencing pot of the present invention;

FIG. 4 is a schematic side view of the vent hole of the present invention;

fig. 5 is a schematic side view of the protective net of the present invention.

In the figure: 1. a sound-deadening tube; 2. a connecting pipe; 3. an end cap; 4. a silencing barrel; 5. silencing cotton; 6. a vent hole; 7. a protective net; 8. fixing the tube; 9. a spiral auger; 10. and (4) protruding.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be described below clearly and completely with reference to the accompanying drawings of the embodiments of the present disclosure.

The structure, ratio, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention does not have the substantial significance in the technology, and any structure modification, ratio relationship change or size adjustment should still fall within the scope which can be covered by the technical content disclosed by the present invention without affecting the efficacy which can be produced by the present invention and the purpose which can be achieved by the present invention. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle", and the like used in the present specification are for the sake of clarity only, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof are also considered to be the scope of the present invention without substantial changes in the technical content.

Referring to fig. 1-5, an exhaust pipe silencer includes a silencing pipe 1, a connecting pipe 2 is installed at one end of the silencing pipe 1, the connecting pipe 2 is a threaded pipe and can be screwed on an exhaust pipe opening of a vacuum pump, an end cover 3 is detachably sleeved at the other end of the silencing pipe 1, an inner thread is arranged on an inner wall of the end cover 3, an outer thread is arranged on an outer wall of the silencing pipe 1, the silencing pipe 1 is in threaded engagement with the end cover 3, a silencing barrel 4 is fixedly sleeved at the middle of an inner cavity of the silencing pipe 1, silencing cotton 5 is installed on an inner wall of the silencing pipe 1, the silencing cotton 5 is glass fiber silencing cotton or polyester fiber silencing cotton, the surface of the silencing cotton is of a porous structure, wavy bulges 10 are arranged on the inner wall of the silencing cotton 5, the bulges 10 are made of silencing materials, and the wavy design of the bulges can improve silencing area and accordingly improve silencing effect; one end of the silencing tube 1 far away from the connecting tube 2 is provided with a vent hole 6 positioned at the periphery of the silencing barrel 4; an air exhaust channel is arranged in the middle of the end cover 3, and a protective net 7 is arranged in the air exhaust channel; the inboard mid-mounting of protection network 7 has fixed pipe 8, the mid-mounting of fixed pipe 8 has spiral auger 9, the main part of fixed pipe 8 is the ring, the ring is installed at the middle part of protection network 7 medial surface, and ring internally mounted has the A-frame, the axle head of spiral auger 9 and the center department fixed connection of A-frame, the other end of spiral auger 9 extends to in the section of thick bamboo 4 that disappears, and there is the clearance along the inner wall with the section of thick bamboo 4 that disappears outside the helical blade of spiral auger 9, evenly distributed's bleeder vent has all been seted up on the helical blade of spiral auger 9 and the section of thick bamboo 4 that disappears, utilize the design of spiral auger 9 and bleeder vent, when realizing natural exhaust, can also consume the sound wave energy, thereby play the effect of making an uproar falls.

The utility model discloses after the assembly is in the exhaust vent department of vacuum pump, exhaust via connecting pipe 2 get into hush pipe 4 in, gaseous forward transport via the spiral blade of spiral auger 9 and the bleeder vent on it, make the preliminary consumption of sound wave energy, partial gas gets into hush pipe 1 by the bleeder vent on hush pipe 4 surface simultaneously, the sound wave touches mutually with hush cotton 5, absorbed by the porous structure of hush cotton 5, realize the secondary consumption of sound wave energy, be favorable to improving whole noise cancelling effect, wide market prospect has, do benefit to the popularization.

The above description is only an exemplary embodiment of the present invention, and is not intended to limit the present invention, the scope of which is defined by the appended claims. Various modifications and equivalents of the invention can be made by those skilled in the art within the spirit and scope of the invention, and such modifications and equivalents should also be considered as falling within the scope of the invention.

Claims

1. The utility model provides an exhaust pipe silencing device, includes hush pipe (1), and connecting pipe (2) are installed to the one end of hush pipe (1), and the other end of hush pipe (1) can be dismantled and cup jointed end cover (3), its characterized in that:

the middle part of the inner cavity of the silencing pipe (1) is fixedly sleeved with a silencing barrel (4), and silencing cotton (5) is arranged on the inner wall of the silencing pipe (1);

one end of the silencing tube (1) far away from the connecting tube (2) is provided with a vent hole (6) positioned at the periphery of the silencing barrel (4);

an air exhaust channel is arranged in the middle of the end cover (3), and a protective net (7) is arranged in the air exhaust channel;

the inboard mid-mounting of protection network (7) has fixed pipe (8), and the mid-mounting of fixed pipe (8) has spiral auger (9), and the other end of spiral auger (9) extends to in noise damping section of thick bamboo (4), and there is the clearance along the inner wall with noise damping section of thick bamboo (4) outside the helical blade of spiral auger (9).

2. The exhaust pipe silencing device of claim 1, wherein the helical blades of the helical auger (9) and the silencing barrel (4) are provided with air holes which are uniformly distributed.

3. The exhaust pipe silencing device according to claim 1, wherein the main body of the fixed pipe (8) is a circular ring, the circular ring is installed in the middle of the inner side surface of the protective net (7), a triangular bracket is installed inside the circular ring, and the shaft end of the spiral auger (9) is fixedly connected with the center of the triangular bracket.

4. The exhaust pipe silencing apparatus according to claim 1, wherein the silencing cotton (5) is glass fiber silencing cotton or polyester fiber silencing cotton, and the surface is provided with a porous structure.

5. The exhaust pipe silencing apparatus as recited in claim 1, wherein the inner wall of said silencing cotton (5) is provided with a wave-shaped protrusion (10).