Anti-corrosion silencer for automobile

Abstract

An anti-corrosion silencer for an automobile comprises a shell and a silencing pipe, the left side end of the shell is connected with an air inlet pipe, the right side end of the shell is connected with an exhaust pipe, the inner surface layer of the shell is coated with anti-corrosion paint, and a layer of sound absorption cotton is arranged in the inner wall of the shell. A spoiler, a first partition plate and a second partition plate are sequentially and fixedly arranged in the shell in the direction from the air inlet pipe to the exhaust pipe, the interior of the shell is divided into a streaming cavity, a first silencing cavity, a second silencing cavity and a third silencing cavity, and the silencing pipe is composed of a first conical pipe, a second conical pipe and a third conical pipe. A small port of the first conical pipe is communicated with a large port of the second conical pipe, a small port of the second conical pipe is communicated with a large port of the third conical pipe, the silencing pipe penetrates through the first partition plate and the second partition plate, the large port end, located in the first silencing cavity, of the first conical pipe is fixedly connected with the spoiler, and the second conical pipe is located in the second silencing cavity. The third conical pipe is located in the third silencing cavity. The silencer has the advantages of corrosion resistance, good silencing effect and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile accessories, in particular to an anti-corrosion muffler used for automobiles. Background Art

[0002] It is normal for the exhaust pipe to drip water. After the gasoline is completely burned, it generates carbon dioxide and water vapor. Water vapor is colorless and transparent at high temperatures. After condensation, the water vapor gathers and becomes water droplets, which will be discharged through the exhaust pipe. However, the water droplets in some exhaust pipes cannot be discharged well, resulting in the accumulation of water droplets in the muffler, causing the inside of the muffler to be corroded by water droplets. Utility Model Content

[0003] The utility model provides an anti-corrosion muffler for an automobile to solve the problems raised in the background technology.

[0004] In order to solve the above problems, the utility model provides an anti-corrosion muffler for a car, comprising a shell and a muffler pipe, wherein the left end of the shell is connected to an intake pipe, the right end is connected to an exhaust pipe, and the inner surface of the shell is coated with an anti-corrosion paint, a layer of sound-absorbing cotton is arranged in the inner wall of the shell, a spoiler, a first baffle and a second baffle are fixed in sequence from the intake pipe to the exhaust pipe in the shell, and the shell is divided into a bypass chamber, a first muffler chamber, a second muffler chamber and a third muffler chamber, and the muffler pipe is installed in the shell, the muffler pipe is composed of a first conical pipe, a second conical pipe and a third conical pipe, and the small port of the first conical pipe is connected to the large port of the second conical pipe, and the small port of the second conical pipe is connected to the large port of the third conical pipe, and the muffler pipe passes through the first baffle and the second baffle, and the first conical pipe is located in the first muffler chamber and the large end is fixed to the spoiler, the second conical pipe is located in the second muffler chamber, and the third conical pipe is located in the third muffler chamber.

[0005] Preferably, a plurality of ventilation holes are evenly formed on the surfaces of the first tapered tube, the second tapered tube and the third tapered tube, and the ventilation holes are inclined.

[0006] Preferably, air guide holes are evenly formed in the first partition plate and the second partition plate.

[0007] Preferably, the bottom end of the exhaust pipe and the bottom end of the shell are located at the same horizontal plane.

[0008] The beneficial effects of adopting the above technical solution are:

[0009] 1. The gas entering the bypass chamber is diverted by the bypass plate, and the sound-absorbing cotton inside the shell is used for preliminary silencing.

[0010] 2. The gas diverted by the spoiler enters the first conical tube of the silencer pipe. Due to its conical shape, it forms a flow resistance to the gas, reduces the gas flow rate and reduces the noise generated by the gas flow. The gas is then guided and dispersed through the air holes on the surface, and silenced in the first silencer chamber with the help of sound-absorbing cotton. At the same time, the gas in the first conical tube is introduced into the second conical tube, and the second conical tube forms a second flow resistance to reduce the gas flow rate and the noise generated by the gas flow. The gas is then guided and dispersed through the air holes on the surface, and silenced with the help of sound-absorbing cotton in the second silencer chamber. The gas passing through the second conical tube enters the third conical tube, and the flow resistance formed by the third conical tube allows the gas to be slowly discharged into the third silencer chamber, and silenced with the help of the third silencer chamber. The noise generated by the gas flow rate itself is reduced by three-stage flow resistance, and the silencer effect is better with the help of three silencer chambers.

[0011] 3. When liquid is generated inside the shell, since the first partition plate and the second partition plate are provided with air guide holes, the liquid generated at the same time will move downward under the influence of the air flow blown out from the vent holes obliquely opened in the first conical tube and the second conical tube, and then be discharged from the exhaust pipe, and is not easy to remain in the shell, thereby effectively preventing corrosion inside the shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the cutaway three-dimensional structure of the utility model.

[0013] Figure 2 It is a schematic diagram of the cross-sectional plan structure of the utility model.

[0014] Among them: 1-shell; 11-intake pipe; 12-exhaust pipe; 13-spoiler; 14-first partition; 15-second partition; 16-air guide hole; 2-silencer; 21-first conical tube; 22-second conical tube; 23-third conical tube; 24-vent; 3-sound-absorbing cotton; 4-flow cavity; 5-first silencer cavity; 6-second silencer cavity; 7-third silencer cavity. DETAILED DESCRIPTION

[0015] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0016] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0017] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, a movable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0018] like Figure 1-2 In this embodiment, an anti-corrosion muffler for a car comprises a shell 1 and a muffler pipe 2. The left end of the shell 1 is connected to an intake pipe 11, and the right end is connected to an exhaust pipe 12. The inner surface of the shell 2 is coated with an anti-corrosion coating. A layer of sound-absorbing cotton 3 is provided in the inner wall of the shell 1. A spoiler 13, a first baffle 14, and a second baffle 15 are fixed in the shell 1 in sequence from the intake pipe 11 to the exhaust pipe 12, dividing the shell 1 into a bypass chamber 4, a first muffler chamber 5, a second muffler chamber 6, and a third muffler chamber 7. The muffler pipe 2 is installed in the shell 1, the muffler 2 is composed of a first tapered tube 21, a second tapered tube 22, and a third tapered tube 23, and the small end of the first tapered tube 21 is communicated with the large end of the second tapered tube 22, the small end of the second tapered tube 22 is communicated with the large end of the third tapered tube 23, the muffler 2 passes through the first baffle 14 and the second baffle 15, and the first tapered tube 21 is located in the first muffler cavity 5 and the large end is fixed to the spoiler 13, the second tapered tube 22 is located in the second muffler cavity 6, and the third tapered tube 23 is located in the third muffler cavity 7.

[0019] Preferably, a plurality of vent holes 24 are evenly formed on the surfaces of the first tapered tube 21 , the second tapered tube 22 , and the third tapered tube 23 , and the vent holes 24 are inclined.

[0020] Preferably, air guide holes are evenly formed in the first partition plate and the second partition plate.

[0021] Preferably, the bottom end of the exhaust pipe 12 and the bottom end of the shell 1 are located at the same horizontal plane.

[0022] The embodiment is implemented as follows:

[0023] When the present application is in use, exhaust gas enters the intake pipe 11, and the exhaust gas enters the bypass cavity 4 inside the shell 1. The gas is diverted by the interference of the spoiler 13, and then introduced into the first conical tube 21 in the silencer 2. The gas is obstructed in the first conical tube 21, thereby slowing down the gas flow rate and reducing the noise generated by the gas flow rate itself. Then, the internal gas is dispersed and introduced into the first silencer cavity 5 through the opened vents 24, and the first silencer is performed in cooperation with the sound-absorbing cotton 3 inside the shell 1. The gas decelerated in the first conical tube 21 is introduced into the second conical tube 22, and the gas is further obstructed in the second conical tube 22, and the gas flow rate is reduced again, reducing the noise generated by the gas flow rate itself. At the same time, the gas is diverted through the vents 24 and introduced into the second silencer cavity 6, and the second silencer is performed in cooperation with the sound-absorbing cotton 3 inside the shell 1. The gas decelerated in the second conical tube 22 enters In the third conical tube 23, the gas is blocked again, the gas flow rate is reduced, and then it is discharged into the third silencer chamber 7, and the third silencer is performed with the sound-absorbing cotton 3, and finally discharged from the discharge pipe 12. Since the first partition 14 and the second partition 15 are provided with air guide holes 16, the first silencer chamber 5, the second silencer chamber 6, and the third silencer chamber 7 are interconnected. When the gas in the first conical tube 21, the second conical tube 22, and the third conical tube 23 in the silencer 2 produces liquid, it will be discharged from the vent 24 under the influence of the air flow blown out from the vent 24, and then move in the first silencer chamber 5 and the second silencer chamber 6 respectively, and then gather in the third silencer chamber 7, and be discharged from the discharge pipe 12, so that the liquid cannot be retained in the shell 1, which can effectively reduce the corrosion of the liquid to the inside of the shell 1, and there is no need to install the shell 1 at an angle on the bottom of the car, making the installation more convenient and stable.

[0024] Finally, it should be noted that the above implementation cases are only used to illustrate the present invention, rather than to limit the technical solutions described in the present invention; therefore, although this specification has described the present invention in detail with reference to the above-mentioned embodiments, ordinary technicians in this field should understand that the present invention can still be modified or replaced by equivalents, and all technical solutions and improvements that do not depart from the spirit and scope of the present invention should be included in the scope of the claims of the present invention; the technology not described in detail in the present invention is implemented with the existing technology.

Claims

1. An anti-corrosion muffler for an automobile, comprising a housing and a muffler pipe, characterized in that: The left end of the shell is connected to an air intake pipe, the right end is connected to an exhaust pipe, and the inner surface of the shell is coated with anti-corrosion paint. A layer of sound-absorbing cotton is provided in the inner wall of the shell. A spoiler, a first baffle and a second baffle are fixed in the shell in sequence from the air intake pipe to the exhaust pipe, and the shell is divided into a bypass chamber, a first silencer chamber, a second silencer chamber and a third silencer chamber. The silencer pipe is installed in the shell. The silencer pipe consists of a first conical pipe, a second conical pipe and a third conical pipe, and the small port of the first conical pipe is connected to the large port of the second conical pipe, and the small port of the second conical pipe is connected to the large port of the third conical pipe. The silencer pipe passes through the first baffle and the second baffle, and the first conical pipe is located in the first silencer chamber and the large end is fixed to the spoiler, the second conical pipe is located in the second silencer chamber, and the third conical pipe is located in the third silencer chamber.

2. The anti-corrosion muffler for automobile according to claim 1, characterized in that: A plurality of ventilation holes are evenly arranged on the surfaces of the first conical tube, the second conical tube and the third conical tube, and the ventilation holes are inclined.

3. The anti-corrosion muffler for automobile according to claim 1, characterized in that: The first partition plate and the second partition plate are evenly provided with air guide holes.

4. The anti-corrosion muffler for automobile according to claim 1, characterized in that: The bottom end of the exhaust pipe and the bottom end of the shell are located at the same horizontal plane.

Images