CN213953709U

CN213953709U - Automobile exhaust pipe silencer

Info

Publication number: CN213953709U
Application number: CN202022513990.2U
Authority: CN
Inventors: 李勇
Original assignee: Chongqing Benyi Auto Parts Co ltd
Current assignee: Chongqing Benyi Auto Parts Co ltd
Priority date: 2020-11-04
Filing date: 2020-11-04
Publication date: 2021-08-13
Anticipated expiration: 2030-11-04

Abstract

The utility model discloses an automobile exhaust pipe silencer, including the silencer shell, the inner wall of silencer shell is close to terminal surface position threaded connection has round baffle, the central point of round baffle puts and runs through fixedly connected with intake pipe, one side fixedly connected with bellows of silencer shell is kept away from to the intake pipe, the inside wall and the round baffle relative position fixedly connected with noise elimination board of silencer shell, be provided with first noise elimination pipe between noise elimination board and the round baffle, the outer wall of first noise elimination pipe is close to the coaxial fixedly connected with external screw thread ring in position of round baffle, the outer wall and the coaxial fixedly connected with solid fixed ring in external screw thread ring relative position of first noise elimination pipe, the outside of external screw thread ring and solid fixed ring is provided with the second noise elimination pipe. Blast pipe silencer heat dispersion is good, can easily dismantle and be provided with damping device, it is very convenient often to maintain changing of muffler.

Description

Automobile exhaust pipe silencer

Technical Field

The utility model relates to a silencer technical field especially relates to an automobile exhaust pipe silencer.

Background

The automobile manufacturing industry has gradually developed to become an important component of national economy, an exhaust pipe is an important component of an automobile, in an automobile exhaust system, because an engine can generate huge sound when exhausting high-temperature and high-pressure gas after combustion to cause noise pollution to a certain degree, a silencer is usually arranged in the automobile exhaust system to reduce the exhaust noise of the automobile engine so as to improve user experience, and the existing common automobile silencer is half of the wavelength of sound waves emitted by the automobile according to the length difference value of two pipelines, so that two rows of sound waves are interfered with each other to offset each other when being superposed, the sound intensity is reduced, and the sound attenuation effect is achieved.

In the prior art, the exhaust pipe is often welded with the silencer to form an integral structure, the silencer is integrally formed, when the silencer is maintained and replaced, the whole silencer and the exhaust pipe are required to be integrally replaced, so that the silencer is not convenient to maintain, and meanwhile, a lot of unnecessary waste is caused.

Because what pass through in the silencer is engine combustion back exhaust high temperature high pressure gas, gas temperature is very high, and the muffler pipe exhausts and scalds very after a period, consequently need dispel the heat to the muffler, otherwise damages the silencer easily and the accessory on every side, influences the exhaust performance, for this reason the utility model provides a new vehicle vent-pipe silencer.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing an automobile exhaust pipe silencer.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a silencer of an automobile exhaust pipe comprises a silencer shell, wherein a circular baffle is in threaded connection at the position, close to the end face, of the inner wall of the silencer shell, an air inlet pipe penetrates through and is fixedly connected with the center position of the circular baffle, a corrugated pipe is fixedly connected to one side, far away from the silencer shell, of the air inlet pipe, an silencing plate is fixedly connected to the position, opposite to the circular baffle, of the inner side wall of the silencer shell, a first silencing pipe is arranged between the silencing plate and the circular baffle, an external thread ring is coaxially and fixedly connected to the position, close to the circular baffle, of the outer wall of the first silencing pipe, a fixing ring is coaxially and fixedly connected to the position, opposite to the external thread ring, of the outer wall of the first silencing pipe, a second silencing pipe is arranged on the outer side of the external thread ring and the fixing ring, silencing holes are formed in the positions, close to the middle part, the silencer shell has the groove of eliminating the noise with the corresponding one side outer wall threaded connection of noise elimination board, the bottom fixed link in groove of eliminating the noise has the outlet duct, the bottom of silencer shell is provided with unable adjustment base, the silencer shell is close to the bottom border position fixedly connected with fixed block of bellows, threaded connection has the long screw on the fixed block, the equal fixedly connected with stopper in middle part position of the relative both sides of unable adjustment base, two the equal fixedly connected with spring assembly in top of stopper, two spring assembly's top fixedly connected with installation piece.

As a further description of the above technical solution:

the part of the air inlet pipe, which is positioned in the silencer shell, is provided with external threads, and the first silencing pipe is in threaded connection with the air inlet pipe.

As a further description of the above technical solution:

the center position of noise elimination board is provided with the screw hole, screw hole and first noise elimination pipe threaded connection.

As a further description of the above technical solution:

the inner wall of the second silencing pipe is smoothly attached to the fixing ring.

As a further description of the above technical solution:

the external thread ring is in threaded connection with the end face of the second silencing pipe close to the circular baffle.

As a further description of the above technical solution:

the long screw is in threaded connection with the fixed base.

The utility model discloses following beneficial effect has:

1. the silencer all is provided with the hole of eliminating noise on first muffler pipe, second muffler pipe and noise elimination board, and one side in groove of eliminating noise is sunk structure, and sunk structure can further cushion the air current, has played good noise reduction effect, and the major part of this device is threaded connection mostly, can easily dismantle, when maintaining, changing the muffler, need not wholly change whole silencer and blast pipe, and it is extravagant to have avoided a lot of unnecessary.

2. The automobile often bumps and shakes when driving, the spring assembly can play a good buffering role on the muffler main body, the service life of other exhaust pipe welding parts is effectively guaranteed, the fixing base is made of heat conducting materials, the heat dissipation area of the muffler shell is effectively enlarged, a good heat dissipation effect is achieved, and the exhaust pipe and surrounding accessories are effectively protected from being damaged due to overhigh temperature.

Drawings

Fig. 1 is a front view of an exhaust pipe muffler for an automobile according to the present invention;

FIG. 2 is a main sectional view of an exhaust pipe muffler for an automobile according to the present invention;

fig. 3 is a schematic view of a fixing base and a combined structure thereof in the muffler of the automobile exhaust pipe provided by the present invention;

FIG. 4 is a structural diagram of a first muffler pipe in the muffler of the automobile exhaust pipe according to the present invention;

FIG. 5 is a structural diagram of a second muffler pipe in the muffler of the automobile exhaust pipe according to the present invention;

fig. 6 is a structural diagram of the muffler plate in the exhaust pipe muffler of the present invention.

Illustration of the drawings:

1. a muffler housing; 2. a round baffle plate; 3. an air inlet pipe; 4. a bellows; 5. an acoustic panel; 6. a first muffler pipe; 7. an externally threaded ring; 8. a fixing ring; 9. a second muffler pipe; 10. a silencing groove; 11. an air outlet pipe; 12. a fixed base; 13. a fixed block; 14. a long screw; 15. a limiting block; 16. a spring assembly; 17. mounting blocks; 18. and (4) an anechoic hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-6, the present invention provides an embodiment: a muffler for an automobile exhaust pipe comprises a muffler shell 1, wherein a circular baffle 2 is in threaded connection with the inner wall of the muffler shell 1 close to the end face, an air inlet pipe 3 penetrates through and is fixedly connected with the center position of the circular baffle 2, a corrugated pipe 4 is fixedly connected with one side, far away from the muffler shell 1, of the air inlet pipe 3, when the automobile jolts and shakes, the corrugated pipe 4 can prevent the damping effect of a spring assembly 16 on the muffler from being transmitted to the front end of the exhaust pipe, a silencing plate 5 is fixedly connected with the inner side wall of the muffler shell 1 and the circular baffle 2 at a position opposite to each other, a first silencing pipe 6 is arranged between the silencing plate 5 and the circular baffle 2, an external thread ring 7 is coaxially and fixedly connected with the outer wall of the first silencing pipe 6 at a position close to the circular baffle 2, a fixing ring 8 is coaxially and fixedly connected with the outer wall of the first silencing pipe 6 and the, the arrangement of the external thread ring 7 and the fixing ring 8 can facilitate the disassembly of the second muffler pipe 9, the outer wall of the first muffler pipe 6 close to the middle position, the outer wall of the second muffler pipe 9 and the surface of the muffler plate 5 are all provided with the muffler holes 18, the muffler holes 18 can enable the air flow to be continuously compressed and expanded in the flowing process, the noise of low and middle frequency bands is inhibited by utilizing the continuous change of the expansion ratio, thereby eliminating the sound waves of different frequencies and achieving the silencing effect, one side of the muffler shell 1 corresponding to the muffler plate 5 is in threaded connection with the muffler groove 10, one side of the muffler groove 10 is in a concave structure, the concave structure can further buffer the air flow and further inhibit the noise, the bottom of the muffler groove 10 is fixedly connected with the air outlet pipe 11, the bottom of the muffler shell 1 is provided with the fixing base 12, the upper surface of the fixing base 12 is in an arc structure, on one hand, the fixing base 12 plays a role in supporting the whole muffler, on the other hand unable adjustment base 12's material is the heat conduction material, silencer shell 1's heat radiating area has effectively been enlarged, good radiating action has been played, silencer shell 1 is close to the bottom border position fixedly connected with fixed block 13 of bellows 4, threaded connection has long screw 14 on the fixed block 13, the equal fixedly connected with stopper 15 in middle part position of the relative both sides of unable adjustment base 12, the equal fixedly connected with spring assembly 16 in top of two stopper 15, the vibrations of jolting often take place for the car, spring assembly 16 can play good cushioning effect to the muffler main part, other pipe welding part's of exhaust life has effectively been guaranteed, two spring assembly 16's top fixedly connected with installation piece 17, installation piece 17 can make things convenient for the holistic installation of muffler.

The part that intake pipe 3 is located silencer shell 1 is provided with the external screw thread, first muffler pipe 6 and 3 threaded connection of intake pipe, the central point of muffler board 5 puts and is provided with the screw hole, screw hole and 6 threaded connection of first muffler pipe, two threaded connection can make things convenient for the dismantlement of first muffler pipe 6, the inner wall and the solid fixed ring 8 of second muffler pipe 9 are smooth to be laminated, the terminal surface position threaded connection that external screw thread ring 7 and second muffler pipe 9 are close to circular baffle 2, rotate second muffler pipe 9, second muffler pipe 9 breaks away from behind the external screw thread ring 7, along the first muffler pipe 6 of solid fixed ring 8 roll-off, long screw 14 and unable adjustment base 12 threaded connection, long screw 14 plays the fixed limiting action of sound cancellation main part through fixed block 13 and unable adjustment base 12 threaded connection.

The working principle is as follows: the utility model discloses an install two coaxial muffler pipes that set up in the silencer shell 1 of vehicle vent-pipe silencer, muffler hole 18 has all been seted up to the muffler pipe outer wall, the automobile exhaust air current passes through intake pipe 3 and gets into, pass muffler hole 18 on first muffler pipe 6 and get into the cavity between first muffler pipe 6 and second muffler pipe 9, and then pass muffler hole 18 on second muffler pipe 9 to the outside cavity, and then pass muffler plate 5, get into in muffler groove 10, the air current in the adjacent cavity constantly shuttles back and forth the exchange through muffler hole 18, the continuous compression and the expansion of air current in the flow process, utilize the constant change of expansion ratio, restrain the noise of low-mid frequency range, thereby eliminate the sound wave of different frequencies, reach the effect of eliminating the noise, finally the air current arrives in muffler groove 10, one side of muffler groove 10 is the sunk structure, the sunk structure can further part cushion the air current, further noise suppression, finally through the steady discharge of outlet duct 11, because the exhaust high temperature high pressure gas after the engine combustion passes through in the silencer, the gas temperature is very high, the silencer is very hot after gaseous a period of time, therefore need to dispel the heat to the silencer, otherwise damage blast pipe and surrounding accessories easily, influence the exhaust performance, the upper surface of unable adjustment base 12 is the arc structure, just in time with silencer shell 1 corresponding, and unable adjustment base 12 is the heat conduction material, effectively enlarged the heat radiating area of silencer shell 1, played good heat dissipation effect, often jolt vibrations when the car is gone, spring assembly 16 can play good cushioning effect to the silencer main part, effectively guaranteed the life of other pipe welding parts of exhaust, the utility model discloses when the silencer is used, through long screw 14, fix the silencer main part on unable adjustment base 12, the user installs the muffler of the automobile exhaust pipe on the automobile through the installation block 17 according to the actual situation of the automobile, and connects with the front section of the exhaust pipe through the corrugated pipe 4, when the muffler breaks down and needs to be replaced and maintained, the muffler is disassembled through the corrugated pipe 4 and the installation block 17, then the long screw 14 is screwed to take out the muffler main body, the muffling groove 10 is rotated to disassemble the muffler, the first muffling pipe 6 is rotated to move towards the muffling groove 10, the first muffling pipe 6 is separated from the air inlet pipe 3, the air inlet pipe 3 is rotated to drive the circular baffle 2 to rotate, the circular baffle 2 is separated from the muffler shell 1, the first muffling pipe 6 is rotated reversely, the first muffling pipe 6 and the second muffling pipe 9 are separated from the air inlet pipe 3, finally, the second muffling pipe 9 is rotated, after the second muffling pipe 9 is separated from the external thread ring 7, along the first muffler pipe 6 of 8 roll-offs of solid fixed ring, accomplish the dismantlement to the muffler, muffler heat dispersion is good, can easily dismantle, when maintaining, changing to the muffler, need not wholly change whole muffler and blast pipe, has avoided a lot of unnecessary extravagant.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. The utility model provides an automobile exhaust pipe silencer, includes silencer shell (1), its characterized in that: the silencer is characterized in that a circular baffle (2) is in threaded connection at the position, close to the end face, of the inner wall of the silencer shell (1), an air inlet pipe (3) penetrates through and is fixedly connected with the center position of the circular baffle (2), a corrugated pipe (4) is fixedly connected to one side, far away from the silencer shell (1), of the air inlet pipe (3), a silencing plate (5) is fixedly connected to the position, opposite to the circular baffle (2), of the inner side wall of the silencer shell (1), a first silencing pipe (6) is arranged between the silencing plate (5) and the circular baffle (2), an external thread ring (7) is coaxially and fixedly connected to the position, close to the circular baffle (2), of the outer wall of the first silencing pipe (6), a fixing ring (8) is coaxially and fixedly connected to the position, opposite to the external thread ring (7), and a second silencing pipe (9) is arranged on the outer sides of the external thread ring, the outer wall of the first silencing pipe (6) is close to the middle part, the outer wall of the second silencing pipe (9) and the surface of the silencing plate (5) are provided with silencing holes (18), the outer wall of one side of the silencer shell (1) corresponding to the silencing plate (5) is in threaded connection with a silencing groove (10), the bottom of the silencing groove (10) is fixedly connected with an air outlet pipe (11), the bottom of the silencer shell (1) is provided with a fixed base (12), the muffler shell (1) is fixedly connected with a fixed block (13) at the bottom edge position close to the corrugated pipe (4), threaded connection has long screw (14) on fixed block (13), the equal fixedly connected with stopper (15), two in the middle part position of the relative both sides of unable adjustment base (12) the equal fixedly connected with spring assembly (16), two in top of stopper (15) the top fixedly connected with installation piece (17) of spring assembly (16).

2. The exhaust pipe muffler for an automobile according to claim 1, wherein: the part of the air inlet pipe (3) located in the silencer shell (1) is provided with external threads, and the first silencing pipe (6) is in threaded connection with the air inlet pipe (3).

3. The exhaust pipe muffler for an automobile according to claim 1, wherein: the center position of the noise elimination plate (5) is provided with a threaded hole, and the threaded hole is in threaded connection with the first noise elimination pipe (6).

4. The exhaust pipe muffler for an automobile according to claim 1, wherein: the inner wall of the second silencing pipe (9) is smoothly attached to the fixing ring (8).

5. The exhaust pipe muffler for an automobile according to claim 1, wherein: the external thread ring (7) is in threaded connection with the end face of the second silencing pipe (9) close to the circular baffle (2).

6. The exhaust pipe muffler for an automobile according to claim 1, wherein: the long screw (14) is in threaded connection with the fixed base (12).