Exhaust pipe flange plate with good noise reduction effect

Abstract

The exhaust pipe flange plate with the good noise reduction effect comprises a flange plate body, a noise reduction sleeve is fixedly arranged at the bottom of the flange plate body, a sound insulation outer cylinder is connected to the outer portion of the noise reduction sleeve in a sleeved mode, a vacuum cavity is formed between the sound insulation outer cylinder and the noise reduction sleeve, and a plurality of lantern rings are fixedly arranged on the surface of the sound insulation outer cylinder at equal intervals. A plurality of sound absorption holes are formed in the surfaces of the multiple lantern rings, and the multiple lantern rings are filled with sound absorption cotton blocks. The vacuum cavity is formed between the silencing sleeve and the sound insulation outer cylinder, the lantern ring is arranged on the surface of the sound insulation outer cylinder, and the sound absorption cotton block is filled in the lantern ring, so that the noise reduction performance of the flange plate body is effectively improved, and the automobile noise is reduced in the automobile exhaust emission process.

Description

Technical Field

[0001] The utility model relates to an exhaust pipe flange with good noise reduction effect, belonging to the technical field of exhaust pipe flanges. Background Art

[0002] The exhaust pipe flange is a connecting component used to connect the exhaust pipe to the exhaust outlet end of the automobile. The current exhaust pipe flange is mainly connected to the exhaust end of the automobile through bolts during use.

[0003] After searching, according to the patent number "CN218093207U", an exhaust pipe flange is disclosed, which belongs to the technical field of pipeline connection structure, and is used to provide an exhaust pipe flange that can reduce pressure, reduce noise, and improve material uniformity, including a connecting ring, and the connecting ring has an integrated diffuser cover and a pressure relief cone. The diffuser cover is truncated, and the end with a smaller diameter is far away from the pressure relief cone. By designing a conical pressure relief cone for the flange, the reverse airflow before entering the flange will make the airflow near the inlet hole turbulent, making it difficult to produce uniform vibration, and effectively reducing noise.

[0004] The above-mentioned exhaust pipe flange mainly reduces the turbulence of airflow by opening holes, thereby reducing noise. However, during use, we found that the exhaust pipe connected to the exhaust pipe flange is prone to vibration, thereby increasing the generation of noise. For this reason, we designed an exhaust pipe flange with good noise reduction effect to solve the above-mentioned technical problems. Utility Model Content

[0005] The utility model aims to provide an exhaust pipe flange with good noise reduction effect to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solution: it includes a flange body, a silencer sleeve is fixedly provided at the bottom of the flange body, a soundproof outer tube is sleeved on the outside of the silencer sleeve, a vacuum chamber is formed between the soundproof outer tube and the silencer sleeve, a plurality of rings are fixedly provided at equal intervals on the surface of the soundproof outer tube, a plurality of sound-absorbing holes are opened on the surfaces of the plurality of rings, and the interiors of the plurality of rings are filled with sound-absorbing cotton blocks.

[0007] In the above-mentioned exhaust pipe flange with good noise reduction effect, an annular groove is opened at the top of the flange body, an annular block is nested and connected inside the annular groove, an annular sealing ring is fixed at the top of the annular block, and the top of the annular sealing ring extends out of the annular groove.

[0008] In the exhaust pipe flange with good noise reduction effect, a plurality of metal spring sheets are fixedly arranged at equal intervals on the bottom of the annular pressure groove, and the top ends of the plurality of metal spring sheets are fixedly connected to the bottom end of the annular block.

[0009] In the above exhaust pipe flange with good noise reduction effect, a plurality of connection blocks are fixedly provided at equal intervals on the outer wall of the flange body, and threaded holes are provided at the centers of the plurality of connection blocks.

[0010] In the above exhaust pipe flange with good noise reduction effect, a connecting pipe is fixedly provided at the center of the bottom end of the flange body, and a threaded sleeve connected as an integral body is fixedly provided at the bottom end of the connecting pipe.

[0011] In the above exhaust pipe flange with good noise reduction effect, the surface of the flange body is fixedly provided with evenly distributed anti-corrosion paint.

[0012] Compared with the prior art, the utility model has the following beneficial effects: a vacuum cavity is formed between the silencer sleeve and the soundproof outer cylinder, a sleeve ring is arranged on the surface of the soundproof outer cylinder, and a sound-absorbing cotton block is filled inside the sleeve ring, thereby effectively improving the noise reduction performance of the flange body, and reducing automobile noise during the use of automobile exhaust emissions. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the structure of the exhaust pipe flange with good noise reduction effect of the utility model;

[0014] Figure 2 It is a schematic diagram of the cross-sectional structure of the exhaust pipe flange with good noise reduction effect of the utility model;

[0015] Figure 3 The utility model has an exhaust pipe flange with good noise reduction effect Figure 2 A partial enlarged view of point A in the middle.

[0016] In the figure: 1. flange body; 2. annular pressure groove; 3. annular sealing ring; 4. connecting block; 5. threaded hole; 6. silencer sleeve; 7. sound insulation outer cylinder; 8. connecting pipe; 9. threaded sleeve; 10. vacuum chamber; 11. sound-absorbing cotton block; 12. metal shrapnel; 13. annular block; 14. collar. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] See also Figure 1-3 The utility model provides a technical solution for an exhaust pipe flange with good noise reduction effect:

[0019] according to Figure 1-3As shown, it includes a flange body 1, a silencer sleeve 6 is fixedly provided at the bottom of the flange body 1, a soundproof outer tube 7 is sleeved and connected to the outside of the silencer sleeve 6, a vacuum chamber 10 is formed between the soundproof outer tube 7 and the silencer sleeve 6, a plurality of rings 14 are fixedly provided at equal intervals on the surface of the soundproof outer tube 7, a plurality of sound-absorbing holes are opened on the surface of the plurality of rings 14, and the interior of the plurality of rings 14 is filled with sound-absorbing cotton blocks 11.

[0020] Specifically, a vacuum chamber 10 is formed between the silencer sleeve 6 and the soundproof outer tube 7, a collar 14 is arranged on the surface of the soundproof outer tube 7, and a sound-absorbing cotton block 11 is filled inside the collar 14, thereby effectively improving the noise reduction performance of the flange body 1, and reducing automobile noise during the use of automobile exhaust emissions.

[0021] according to Figure 1 and Figure 2 As shown, an annular groove 2 is provided at the top of the flange body 1, an annular block 13 is nested and connected inside the annular groove 2, an annular sealing ring 3 is fixedly provided at the top of the annular block 13, and the top of the annular sealing ring 3 extends out of the annular groove 2.

[0022] A plurality of metal spring sheets 12 are fixedly arranged at equal intervals on the bottom of the annular pressing groove 2 , and the top ends of the plurality of metal spring sheets 12 are fixedly connected to the bottom end of the annular block 13 .

[0023] Specifically, through the cooperation of the metal spring 12 and the annular sealing ring 3, the installation part of the flange body 1 can be squeezed and sealed, thereby improving the sealing performance of the exhaust pipe installation part and avoiding the problem of gas leakage from the flange body 1 during the exhaust process.

[0024] A plurality of connection blocks 4 are fixedly provided at equal intervals on the outer wall of the flange body 1 , and threaded holes 5 are provided at the centers of the plurality of connection blocks 4 .

[0025] Specifically, the threaded holes 5 provided on the surface of the connecting block 4 facilitate the assembly of the flange body 1 .

[0026] A connecting pipe 8 is fixedly provided at the center of the bottom end of the flange body 1 , and a threaded sleeve 9 is fixedly provided at the bottom end of the connecting pipe 8 as an integral unit.

[0027] Specifically, the threaded sleeve 9 is provided to facilitate the connection and assembly between the flange body 1 and the exhaust pipe.

[0028] The surface of the flange body 1 is fixedly provided with an evenly distributed anti-corrosion paint.

[0029] Specifically, the anti-corrosion performance of the flange body 1 is improved by applying the anti-corrosion paint.

[0030] Working principle: the exhaust pipe flange of the utility model has good noise reduction effect. When using the exhaust pipe flange structure, firstly, the exhaust pipe flange is installed at the exhaust position through the cooperation of the connecting block 4 and the locking bolt. During the use of the exhaust pipe flange, the vacuum chamber 10 formed between the silencer sleeve 6 and the soundproof outer tube 7 has good sound insulation performance. At the same time, the ring 14 arranged on the surface of the soundproof outer tube 7 and the sound-absorbing cotton block 11 arranged inside the ring 14 can further absorb sound, thereby reducing the noise of the exhaust pipe flange.

[0031] The contents not described in detail in this specification belong to the prior art known to the professional and technical personnel in this field. The specific embodiments described in this article are only used to illustrate the spirit of the utility model. The technicians in the technical field of the utility model can make various modifications or supplements to the specific embodiments described or replace them in a similar way, but they will not deviate from the spirit of the utility model or exceed the scope defined by the attached claims.

Claims

1. An exhaust pipe flange with good noise reduction effect, comprising a flange body (1), characterized in that: A silencer sleeve (6) is fixedly provided at the bottom of the flange body (1), and a soundproof outer tube (7) is sleeved and connected to the outside of the silencer sleeve (6), and a vacuum chamber (10) is formed between the soundproof outer tube (7) and the silencer sleeve (6). A plurality of rings (14) are fixedly provided at equal intervals on the surface of the soundproof outer tube (7), and a plurality of sound-absorbing holes are provided on the surfaces of the plurality of rings (14), and the interiors of the plurality of rings (14) are filled with sound-absorbing cotton blocks (11).

2. The exhaust pipe flange with good noise reduction effect according to claim 1, characterized in that: The top of the flange body (1) is provided with an annular groove (2), the interior of the annular groove (2) is nested with an annular block (13), the top of the annular block (13) is fixedly provided with an annular sealing ring (3), and the top of the annular sealing ring (3) extends out of the annular groove (2).

3. The exhaust pipe flange with good noise reduction effect according to claim 2, characterized in that: A plurality of metal spring sheets (12) are fixedly arranged at equal intervals on the bottom of the annular pressing groove (2), and the top ends of the plurality of metal spring sheets (12) are fixedly connected to the bottom end of the annular block (13).

4. The exhaust pipe flange with good noise reduction effect according to claim 2, characterized in that: A plurality of connection blocks (4) are fixedly provided at equal intervals on the outer wall of the flange body (1), and threaded holes (5) are provided at the centers of the plurality of connection blocks (4).

5. The exhaust pipe flange with good noise reduction effect according to claim 4, characterized in that: A connecting pipe (8) is fixedly provided at the center of the bottom end of the flange body (1), and a threaded sleeve (9) is fixedly provided at the bottom end of the connecting pipe (8).

6. The exhaust pipe flange with good noise reduction effect according to claim 5, characterized in that: The surface of the flange body (1) is fixedly provided with evenly distributed anti-corrosion paint.

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