CN216767527U

CN216767527U - Engine tail pipe silencer

Info

Publication number: CN216767527U
Application number: CN202220269928.XU
Authority: CN
Inventors: 朱建军; 李凤霞
Original assignee: Rizhao Huadu Power Accessories Co ltd
Current assignee: Rizhao Huadu Power Accessories Co ltd
Priority date: 2022-02-10
Filing date: 2022-02-10
Publication date: 2022-06-17
Anticipated expiration: 2032-02-10

Abstract

The utility model discloses an engine tail pipe silencer, which comprises a tail pipe body, wherein a silencer component is detachably arranged at one end of the tail pipe body, the silencer component comprises a silencer shell detachably connected with one end of the tail pipe body, a tail end is formed at one end of the silencer shell far away from the tail pipe body, a circular plate is formed at one end of the inner wall of the silencer shell towards the tail end, a circular shaft is fixedly arranged in the middle of the circular plate, a ventilating net is fixedly arranged in the circular plate, a plurality of drainage plates are rotatably arranged on the outer edge surface of the circular shaft in an annular array, a net cover is fixedly arranged at one end of the inner wall of the tail end far away from the silencer shell, silencing cotton is fixedly arranged on the inner wall of the tail pipe body, fixing bolts are arranged on the outer edge surface of one end of the silencer shell towards the tail pipe body in an annular array, and the engine tail pipe silencer is reasonable in structure and convenient for reducing vibration caused by the change of cross section area in the air flow discharge process, reduce noise pollution and has strong practicability.

Description

Engine tail pipe silencer

Technical Field

The utility model belongs to the technical field of silencers, and particularly relates to a silencer of a tail pipe of an engine.

Background

The silencer is used for the airflow pipeline with noise transmission, and can attenuate or reflect the noise in the pipeline by using noise reduction devices such as pipelines and elbows with sound absorption linings or pipelines with suddenly changed sectional areas and other discontinuous acoustic impedances. The former is called resistive muffler and the latter is called reactive muffler, and there is also damping of the impedance composite.

At present, the tail pipe of an engine is mainly used for discharging tail gas, and in the tail gas discharging process, the change of the cross section area of the tail pipe can cause gas flow to vibrate in the tail pipe, so that the tail pipe of the engine is driven to vibrate to generate noise, noise pollution is caused, and the surrounding environment is influenced.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to an engine tail pipe muffler to solve the problems of the background art.

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

a tail pipe silencer of an engine comprises a tail pipe body, wherein a silencer component is detachably mounted at one end of the tail pipe body;

the silencer subassembly is including dismantling the silencer casing of connecting in tail pipe body one end, the one end that the tail pipe body was kept away from to the silencer casing is constructed with the tail end, and the one end of silencer shells inner wall towards the tail end is constructed with the plectane, fixed mounting placed in the middle has the circle axle in the plectane, and fixed mounting has ventilative net in the plectane, be annular array rotatable mounting and have the polylith drainage plate on the outer fringe face of circle axle.

Further, a mesh enclosure is fixedly mounted at one end, far away from the silencer shell, of the inner wall of the tail end, and silencing cotton is fixedly mounted on the inner wall of the tail pipe body.

Furthermore, the silencer shell is provided with fixing bolts in an annular array on the outer edge surface of one end, facing the tail pipe body, of the silencer shell, the bolt bodies of the fixing bolts can be screwed into the silencer shell and the tail pipe body, and springs are sleeved on the outer edge surface of the bolt bodies of the fixing bolts.

Further, the tail pipe body is kept away from the one end structure of silencer subassembly and is the hemisphere cambered surface, and the tail pipe body structure is attached fixed mounting on the one end inner wall of hemisphere cambered surface and inhales the sound noise elimination cotton.

Furthermore, a vent plate is fixedly mounted on the inner wall of one end, away from the silencer assembly, of the tail pipe body, vent holes are formed in the vent plate at equal intervals, and a guide plate is constructed at one end, away from the silencer shell, of the vent plate at equal intervals.

Further, the tail pipe body is provided with an exhaust pipe in the middle at one end far away from the silencer shell, one end of the exhaust pipe is constructed on the tail pipe body, and the exhaust pipe and the tail pipe body are communicated with each other.

Compared with the prior art, the utility model has the following beneficial effects: the tail gas of the engine can be discharged through the tail pipe body due to the arrangement of the circular plate, the circular shaft and the drainage plates, and in the process of discharging and conveying the tail gas, the tail gas enters the silencer shell through the ventilation net in the circular plate and is divided and guided by the plurality of drainage plates which are rotatably arranged on the outer edge surface of the circular shaft in the annular array, so that the flow direction of the airflow is guided, the vibration caused by the change of the cross section area in the airflow discharging process is reduced, the noise generated by the tail pipe body due to vibration is reduced, and the noise pollution is reduced;

thanks to the arrangement of the ventilating plate, the ventilating holes and the guide plate, when the air flow enters the tail pipe body through the exhaust pipe, the cross section area changes, the noise generated when the air flow enters the tail pipe body through the exhaust pipe can be reduced through the sound-absorbing silencing cotton, the air flow is guided through the guide plate, the noise generated by air flow vibration is further reduced, and the silencing effect is improved.

Drawings

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

FIG. 2 is a cross-sectional view of FIG. 1 in accordance with the present invention;

FIG. 3 is an enlarged view of the structure at A in FIG. 2 according to the present invention.

In the figure: 1. a tail pipe body; 2. an exhaust pipe; 3. sound absorbing and silencing cotton; 4. a gas permeable plate; 5. air holes are formed; 6. a baffle; 7. a muffler housing; 8. fixing the bolt; 9. a spring; 10. a tail end; 11. a mesh enclosure; 12. silencing cotton; 13. a circular plate; 14. a breathable net; 15. a circular shaft; 16. a drainage plate.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the utility model easy to understand, the utility model is further explained by combining the specific embodiments.

In order to reduce vibration caused by change of cross sectional area in the air flow discharging process and reduce noise pollution, as shown in fig. 1 and fig. 2, the tail pipe silencer of the engine comprises a tail pipe body 1 with one end detachably provided with a silencer assembly, the silencer assembly comprises a silencer shell 7 detachably connected with one end of the tail pipe body 1, one end of the silencer shell 7 far away from the tail pipe body 1 is provided with a tail end 10, one end of the inner wall of the silencer shell 7 facing the tail end 10 is provided with a circular plate 13, a circular shaft 15 is fixedly arranged in the circular plate 13 in the center, a ventilation net 14 is fixedly arranged in the circular plate 13, a plurality of drainage plates 16 are rotatably arranged on the outer edge surface of the circular shaft 15 in an annular array, due to the arrangement of the circular plate 13, the circular shaft 15 and the drainage plates 16, the tail gas of the engine can be discharged through the tail pipe body 1, and during the discharging and conveying process, the tail gas enters into the silencer shell 7 through the ventilation net 14 in the circular plate 13, and the tail gas is divided and guided by a plurality of drainage plates 16 which are in an annular array and can be rotatably arranged on the outer edge surface of the circular shaft 15, and the flow direction of the air flow is guided, so that the tremble caused by the change of the cross section area in the air flow discharging process is reduced, the noise generated by the tail pipe body 1 due to vibration is reduced, and the noise pollution is reduced.

In order to reduce the noise generated during the circulation of the air flow in the tail pipe body 1, as shown in fig. 1 and 2, a mesh enclosure 11 is fixedly installed on one end of the inner wall of the tail end 10, which is far away from the muffler shell 7, and a silencing cotton 12 is fixedly installed on the inner wall of the tail pipe body 1.

In order to improve the stability of the installation and connection of the tail pipe body 1 and the muffler assembly, as shown in fig. 1, fixing bolts 8 are arranged on the outer edge surface of one end, facing the tail pipe body 1, of the muffler shell 7 in an annular array, bolts of the fixing bolts 8 can be screwed into the muffler shell 7 and the tail pipe body 1, and springs 9 are sleeved on the outer edge surface of the bolts of the fixing bolts 8.

In order to reduce the noise generated when the air flow enters the tail pipe body 1 through the exhaust pipe 2, as shown in fig. 1-3, the tail pipe body 1 has a hemispherical arc surface at one end away from the muffler assembly, the sound-absorbing and sound-deadening cotton 3 is fixedly attached to the inner wall of the hemispherical arc surface at the end of the tail pipe body 1, the vent plate 4 is fixedly attached to the inner wall of the end of the tail pipe body 1 away from the muffler assembly, the vent holes 5 are formed in the vent plate 4 at equal intervals, the guide plate 6 is formed at the equal interval at the end of the vent plate 4 away from the muffler housing 7, the exhaust pipe 2 is arranged in the center of the end of the tail pipe body 1 away from the muffler housing 7, one end of the exhaust pipe 2 is constructed on the tail pipe body 1, and the exhaust pipe 2 and the tail pipe body 1 are communicated with each other, the cross-sectional area changes, through inhaling sound noise elimination cotton 3 can reduce the air current and enter into the noise that produces in the tail pipe body 1 through blast pipe 2 to carry out the water conservancy diversion to the air current through guide plate 6, further reduce the noise that the air current trembles the production, promote noise cancelling effect.

The working principle is as follows: when the engine tail pipe silencer is used, when air flow enters the tail pipe body 1 through the exhaust pipe 2, the cross sectional area changes, noise generated when the air flow enters the tail pipe body 1 through the exhaust pipe 2 can be reduced through the sound-absorbing silencing cotton 3, the air flow is guided through the guide plate 6, when the air flow circulates in the tail pipe body 1, the noise is reduced through the silencing cotton 12, in the exhaust and conveying process of tail gas, the tail gas enters the silencer shell 7 through the ventilation net 14 in the circular plate 13 and is divided and guided through the plurality of guide plates 16 which are rotatably arranged on the outer edge surface of the circular shaft 15 in an annular array to guide the flow direction of the air flow, so that tremble caused by the change of the cross sectional area in the air flow exhaust process is reduced, and the noise generated by vibration of the tail pipe body 1 is reduced, and the engine tail pipe silencer has a reasonable structure, the vibration caused by the change of the cross section area in the air flow discharging process is convenient to reduce, the noise pollution is reduced, and the practicability is high.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. A tail pipe silencer of an engine comprises a tail pipe body (1) with a silencer component detachably mounted at one end;

the method is characterized in that: the silencer subassembly is including dismantling silencer casing (7) of connecting in tail pipe body (1) one end, the one end that tail pipe body (1) was kept away from in silencer casing (7) is constructed tail end (10), and silencer casing (7) inner wall is constructed plectane (13) towards the one end of tail end (10), fixed mounting placed in the middle has circle axle (15) in plectane (13), and plectane (13) internal fixed mounting has ventilative net (14), it has polylith drainage plate (16) to be annular array rotatable mounting on the outer fringe face of circle axle (15).

2. The engine tail pipe muffler according to claim 1, wherein: the silencer is characterized in that a mesh enclosure (11) is fixedly mounted at one end, far away from the silencer shell (7), of the inner wall of the tail end (10), and silencing cotton (12) is fixedly mounted on the inner wall of the tail pipe body (1).

3. An engine tail pipe muffler according to claim 1, characterized in that: the silencer casing (7) is provided with fixing bolt (8) towards being annular array on the one end outer fringe face of tail pipe body (1), the bolt body of fixing bolt (8) can screw in silencer casing (7) and tail pipe body (1) in, and the cover is equipped with spring (9) on the outer fringe face of fixing bolt (8) bolt body.

4. The engine tail pipe muffler according to claim 1, wherein: the one end structure that silencer subassembly was kept away from in tail pipe body (1) is the hemisphere cambered surface, and attached fixed mounting has sound absorption noise elimination cotton (3) on tail pipe body (1) structure is the one end inner wall of hemisphere cambered surface.

5. The engine tail pipe muffler according to claim 4, wherein: the tail pipe assembly is characterized in that a vent plate (4) is fixedly mounted on the inner wall of one end, far away from the silencer assembly, of the tail pipe body (1), vent holes (5) are formed in the vent plate (4) at equal intervals, and a guide plate (6) is constructed at the equal interval of one end, far away from the silencer shell (7), of the vent plate (4).

6. An engine tail pipe muffler according to claim 1, characterized in that: one end of the tail pipe body (1) far away from the silencer shell (7) is provided with an exhaust pipe (2) in the middle, one end of the exhaust pipe (2) is constructed on the tail pipe body (1), and the exhaust pipe (2) is communicated with the tail pipe body (1).