Noise reduction and purification silencer for automobile

Abstract

The utility model provides an automobile noise reduction purification silencer which comprises a shell, the shell comprises a left shell body and a right shell body, the left shell body and the right shell body are provided with flange plates and are connected in a sealed mode through bolts, the end portion of the left shell body is provided with an air outlet pipe, the end portion of the right shell body is provided with an air inlet pipe, and the right shell body is internally provided with a bucket-shaped streaming box. A filter box is movably arranged in the end, facing the right shell, of the left shell, a mounting ring is fixedly arranged at the end, facing the right shell, of the filter box, four clamping strips are fixedly arranged on the surface of the outer side of the filter box at equal intervals, and a mounting groove in butt joint with the mounting ring is formed in the end, facing the right shell, of the left shell. A clamping groove in sliding connection with the clamping strip is formed in the inner wall of the left shell, the clamping groove is communicated with the mounting groove, a silencing box is mounted on the left side of the filter box in the left shell, a silencing area is arranged on the left side of the silencing box in the left shell, and the silencing area is composed of a plurality of horn-shaped barrels which are sequentially stacked. The air purifier has the advantages of being convenient to assemble, disassemble and maintain, improving purification and silencing effects and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts, in particular to a noise reduction and purification muffler for an automobile. Background Art

[0002] The car muffler is a kind of car parts. The car muffler is installed at the exhaust pipe of the car to silence the noise generated inside the engine exhaust pipe, so as to better reduce the car noise.

[0003] The patent website discloses a car purifying silencer (publication number: CN 213063711 U), including a connecting mechanism, a silencer mechanism is fixedly embedded inside the connecting mechanism, a purification metal mesh is fixedly welded inside the connecting mechanism on the side away from the silencer mechanism, and a purification mesh is fixedly welded inside the connecting mechanism on the side of the purification metal mesh close to the port; the connecting mechanism is used to provide connection and support, the silencer mechanism is used to buffer and silence automobile exhaust, and the purification metal mesh and the purification mesh are used to purify automobile exhaust. The utility model can separate the exhaust gas into two streams for purification through the silencer shell, the first silencer cavity, the second silencer cavity and the diverter plate, so that the purification efficiency is higher. At the same time, by setting the first silencer cavity and the second silencer cavity in a spiral shape, the sound absorption efficiency is improved, and the airflow is buffered, so that the reaction time between the airflow and the purification metal mesh is longer, and the purification is more thorough.

[0004] It can be seen from the above technology that in order to deal with the pollution of exhaust gas, a purification metal mesh is added to the muffler to purify the exhaust gas. However, the purification metal mesh is directly fixed and welded inside the muffler, and the purification mesh cannot be cleaned and replaced. Therefore, there is room for improvement. Utility Model Content

[0005] The utility model provides a noise reduction and purification muffler for an automobile to solve the problems raised in the background technology.

[0006] In order to solve the above problems, the utility model provides a noise reduction and purification silencer for an automobile, comprising a shell, the shell comprising a left shell and a right shell, the left shell and the right shell are provided with flanges, which are sealed and connected by bolts, the end of the left shell is provided with an air outlet pipe, the end of the right shell is provided with an air inlet pipe, a bucket-shaped bypass box is provided in the right shell, a filter box is movably provided in the end of the left shell toward the right shell, a mounting ring is fixedly provided at the end of the filter box facing the right shell, and four clamping strips are fixedly provided at equal intervals on the outer surface of the filter box, a mounting groove for docking the mounting ring is provided at the end of the left shell facing the right shell, a clamping groove for sliding the clamping strip is provided in the inner wall of the left shell, and the clamping groove is connected with the mounting groove, a silencer box is installed on the left side of the filter box in the left shell, and a silencer area is provided on the left side of the silencer box in the left shell, and the silencer area is composed of a plurality of horns stacked in sequence, and the end with a small opening of the horn faces the silencer box.

[0007] Preferably, the bypass box has one square and four circular bypass holes in its end surface facing the air inlet pipe, and the bucket-shaped end of the bypass box is open and inserted into the filter box.

[0008] Preferably, the filter box is provided with multiple layers of metal purification mesh, and the outer surface of the filter box is in conflict with the inner wall surface of the left shell body.

[0009] Preferably: the silencer box is provided with a plurality of through holes in the surface of one end of the filter box, a layer of sound-absorbing cotton is arranged on the inner wall of the silencer box, a circular air hole is provided in the end surface of the silencer box facing the silencer zone, and the diameter of the air hole is larger than the diameter of the small mouth end of the horn.

[0010] The beneficial effects of adopting the above technical solution are:

[0011] 1. The flanges of the left and right shells are matched with bolts to make the shells removable, which makes it easy to replace and maintain the filter box. The mounting ring and the clamping strip in the filter box cooperate with the mounting groove and the clamping groove in the left shell to make it easy to load and unload the filter box in the left shell, while ensuring stability after installation.

[0012] 2. The gas mixed with noise entering from the right shell air intake pipe is diverted through the bypass box, and then blocked through the bucket-shaped opening end, so that the gas enters the filter box more slowly, and the metal purification net in the filter box fully purifies the gas and performs preliminary silencing at the same time.

[0013] 3. The purified gas is diverted into the silencer box through the through hole on the silencer box, and the noise in the gas is further eliminated by the sound-absorbing cotton. Then, the gas is transmitted into the silencer area through the air hole, and then silenced again by multiple speakers in the silencer area, so that the silencer effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.

[0015] Figure 2 It is a schematic diagram of the internal sectional three-dimensional structure of the utility model.

[0016] Figure 3 It is a schematic diagram of the three-dimensional structure of the internal section of the utility model from another viewing angle.

[0017] Among them: 1-shell; 11-flange; 12-bolt; 2-left shell; 21-exhaust pipe; 22-installation slot; 23-card slot; 3-right shell; 31-inlet pipe; 4-flow bypass box; 41-flow bypass hole; 5-filter box; 51-installation ring; 52-card strip; 53-metal purification net; 6-silencer box; 61-through hole; 62-sound-absorbing cotton; 63-air hole; 7-silence zone; 71-speaker. DETAILED DESCRIPTION

[0018] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0019] 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.

[0020] 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.

[0021] like Figure 1-3In this embodiment, a noise reduction and purification silencer for automobile includes a shell 1, the shell 1 includes a left shell 2 and a right shell 3, the left shell 2 and the right shell 3 are provided with a flange 11, and are sealed and connected by bolts 12, the end of the left shell 2 is provided with an outlet pipe 21, the end of the right shell 3 is provided with an inlet pipe 31, a bucket-shaped bypass box 4 is provided in the right shell 3, a filter box 5 is movably provided in the end of the left shell 2 facing the right shell 3, and a mounting ring 51 is fixedly provided at the end of the filter box 5 facing the right shell, and the filter box 5 is fixedly provided with a mounting ring 51, and the filter box 5 is fixedly provided with a mounting ring 51. Four clamping strips 52 are fixedly arranged at equal intervals on the outer surface of the filter box 5. A mounting groove 22 for docking the mounting ring 51 is provided at the end of the left shell body 2 facing the right shell body 3. A clamping groove 23 for sliding the clamping strip 52 is provided in the inner wall of the left shell body 2, and the clamping groove 23 is communicated with the mounting groove 22. A silencer box 6 is installed on the left side of the filter box 5 in the left shell body 2. A silencer zone 7 is provided on the left side of the silencer box 6 in the left shell body 2. The silencer zone 7 is composed of a plurality of trumpets 71 stacked in sequence, and the end with a smaller opening of the trumpet 71 faces the silencer box 6.

[0022] Through the above technical scheme, when in use, the gas containing noise is sent into the right shell body 3 through the air intake pipe 31 of the right shell body 3, and then the gas is diverted by the bypass box 4, and then slowly sent to the filter box 5 in the left shell body 2, so that the gas can fully contact with the inside of the filter box 5, thereby improving the purification effect. At the same time, the gas is initially silenced by the bypass box 4 and the filter box 5, and then the gas passing through the filter box 5 enters the silencer box 6, and is silenced again by the silencer box 6, and then sent to the silencer area 7 in the left shell body 2, and the gas is blocked by the horns 71 stacked in sequence, thereby completing the silencer again. The silencer effect can be effectively improved by bypassing three stages of silencer.

[0023] When maintaining the interior of the shell, since the shell 1 is formed by sealingly connecting the left shell 2 and the right shell 3 by bolts 12 and flange 11, the shell 1 is removable, which is convenient for maintenance of the interior. The filter box 5 cooperates with the mounting groove 22 and the slot 23 in the left shell 2 through the mounting ring 51 and the clamping strip 52, so that the filter box 5 is detachably connected to the left shell 2, which is convenient for loading and unloading the filter box 5, making replacement and maintenance more convenient. At the same time, after the clamping strip 52 is inserted into the slot 23 and the mounting ring 51 is connected to the mounting slot 22, when the left shell 2 and the right shell 3 are sealed, the right shell 3 can press the mounting ring 51 in the mounting slot 22, thereby effectively ensuring the stability of the filter box 5 in the left shell 2, thereby improving the stability of filtration.

[0024] Preferably, the bypass box 4 has one square and four circular bypass holes 41 in the end surface facing the air inlet pipe 31 , and the bucket-shaped end of the bypass box 4 is open and inserted into the filter box 5 .

[0025] Through the above technical solution, the square and circular bypass holes 41 are used to divert and reduce the noise of the incoming gas, so that the impact on the inside of the bypass box 4 is reduced when the gas enters the bypass box 4, and then a flow obstruction is formed through the inner bucket shape, so that the gas flows out slowly and then slowly enters the filter box 5, so that the gas fully contacts the inside of the filter box 5, thereby improving the filtering effect.

[0026] Preferably, the filter box 5 is provided with a plurality of layers of metal purification mesh 53 , and the outer surface of the filter box 5 is in conflict with the inner wall surface of the left shell body 2 .

[0027] Through the above technical solution, the setting of the multi-layer metal purification mesh 53 can purify and filter the gas, while diverting and reducing noise. The interference between the outer surface of the filter box 5 and the inner wall of the shell 2 further improves the stability of the filter box 5 installed in the left shell 2.

[0028] Preferably: a plurality of through holes 61 are provided in the surface of one end of the silencer box 6 facing the filter box 5, a layer of sound-absorbing cotton 62 is arranged on the inner wall of the silencer box 6, a circular air hole 63 is provided in the end surface of the silencer box 6 facing the silencer zone 7, and the diameter of the air hole 63 is larger than the diameter of the small mouth end of the horn 71.

[0029] Through the above technical solution, the several through holes 61 in the end face of the silencer box 6 can guide the gas diversion into the silencer box 6, so that the gas diversion can fully contact the sound-absorbing cotton 62, and the gas noise is absorbed and silenced by the sound-absorbing cotton 62, and then sent out through the circular air holes 63, and then further silenced in cooperation with the silencer area 7.

[0030] 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; technologies not described in detail in the present invention are implemented with existing technologies.

Claims

1. A noise reduction and purification muffler for an automobile, comprising a housing, characterized in that: The shell body comprises a left shell body and a right shell body, the left shell body and the right shell body are provided with flanges and are sealed and connected by bolts, an air outlet pipe is provided at the end of the left shell body, an air inlet pipe is provided at the end of the right shell body, a bucket-shaped bypass box is provided in the right shell body, a filter box is movably provided in the end of the left shell body toward the right shell body, a mounting ring is fixedly provided at the end of the filter box facing the right shell body, and four clamping strips are fixedly provided at equal intervals on the outer surface of the filter box, a mounting groove for docking the mounting ring is provided at the end of the left shell body facing the right shell body, a clamping groove for sliding the clamping strip is provided in the inner wall of the left shell body, and the clamping groove is connected with the mounting groove, a silencer box is installed on the left side of the filter box in the left shell body, and a silencer zone is provided on the left side of the silencer box in the left shell body, and the silencer zone is composed of a plurality of trumpets stacked in sequence, and the end with a smaller opening of the trumpet faces the silencer box.

2. The noise reduction and purification muffler for automobile according to claim 1, characterized in that: The deflection box has one square and four circular deflection holes in its end surface facing the air inlet pipe. The bucket-shaped end of the deflection box is open and inserted into the filter box.

3. The noise reduction and purification muffler for automobile according to claim 1, characterized in that: The filter box is provided with multiple layers of metal purification nets, and the outer surface of the filter box is in conflict with the inner wall surface of the left shell body.

4. The noise reduction and purification muffler for automobile according to claim 1, characterized in that: The silencer box is provided with a plurality of through holes in one end surface of the filter box, a layer of sound-absorbing cotton is arranged in the inner wall of the silencer box, and a circular air hole is provided in the end surface of the silencer box facing the silencer zone, and the diameter of the air hole is larger than the diameter of the small mouth end of the horn.

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