Multi-layer composite silencing cotton pipe fitting

Abstract

The utility model discloses a multi-layer composite silencing cotton pipe fitting, relates to the technical field of silencing cotton, and comprises a pipe body and a silencing cotton body surrounding the pipe body, the two sides of the silencing cotton body are detachably connected with a first connecting plate and a second connecting plate, the first connecting plate is fixedly provided with a plurality of supporting rods, and the second connecting plate is fixedly provided with a plurality of connecting rods. A limiting block is in threaded connection with the supporting rod, a plurality of square grooves are formed in the second connecting plate, the limiting block penetrates out of the interior of the square grooves, the silencing cotton pipe fitting is conveniently installed on the pipe body through the limiting block, firstly, the silencing cotton body is wound around the pipe body, then the limiting block rotates on the supporting rod through the threaded connection position, and the silencing cotton pipe fitting can be conveniently installed on the pipe body. The multi-layer composite silencing cotton pipe fitting is rotated to be in the same direction as the square groove, then the square groove is aligned with the limiting block, the limiting block penetrates out of the square groove, finally the limiting block is rotated, the limiting block and the square groove are staggered in direction, the multi-layer composite silencing cotton pipe fitting is rapidly and conveniently installed on the pipe body, and the installation efficiency of the multi-layer composite silencing cotton pipe fitting is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sound-absorbing cotton, in particular to a multi-layer composite sound-absorbing cotton pipe fitting. Background Art

[0002] Silencer cotton pipe fittings are designed to reduce the noise generated by engine exhaust. These silencer cotton pipe fittings are usually made of sound-absorbing materials such as glass fiber, ceramic fiber or special sound-absorbing cotton. They are designed to effectively absorb and reduce the sound waves propagating in the exhaust airflow, thereby reducing the noise level of the entire exhaust system.

[0003] For example, the application number CN211000255U discloses a flame retardant sound-absorbing cotton, which includes: an upper cotton body at the top and a lower cotton body at the bottom; sound-absorbing cotton blocks arranged on the lower surface of the upper cotton body and the upper surface of the lower cotton body, the shape of the sound-absorbing cotton blocks is set to be a protruding rectangular parallelepiped, evenly spaced from each other, and the sound-absorbing cotton blocks of the upper cotton body and the sound-absorbing cotton blocks of the lower cotton body are staggered; sound-absorbing air holes are set between every two sound-absorbing cotton blocks; an upper combination body is set on the side of the upper cotton body and a lower combination body is set on the side of the lower cotton body, and the upper combination body and the lower combination body are bonded and connected by an adhesive. The utility model improves the sound-absorbing performance of the overall cotton block by setting the upper cotton body and the lower cotton body made of flame-retardant hard cotton, and setting staggered rectangular sound-absorbing cotton blocks on the upper cotton body and the lower cotton body, and cooperating with a number of sound-absorbing air holes opened on the upper cotton body and the lower cotton body.

[0004] However, due to the softness and plasticity of the multi-layer composite sound-absorbing cotton pipe, the sound-absorbing cotton pipe is more troublesome to install and it is inconvenient to fit the sound-absorbing cotton pipe tightly on the pipe body, resulting in the inability to effectively absorb and reduce noise, resulting in a poor sound-absorbing effect.

[0005] Therefore, in view of this, the existing structural deficiencies are studied and improved, and a multi-layer composite sound-absorbing cotton pipe is proposed. Utility Model Content

[0006] The purpose of the utility model is to provide a multi-layer composite sound-absorbing cotton pipe fitting to solve the problem that the sound-absorbing cotton pipe fitting is inconvenient to install as mentioned in the above background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a multi-layer composite sound-absorbing cotton pipe fitting, comprising a pipe body and a sound-absorbing cotton body surrounding the pipe body, the two sides of the sound-absorbing cotton body being detachably connected with a first connecting plate and a second connecting plate, a plurality of support rods being fixedly mounted on the first connecting plate, a limiting block being threadedly connected to the support rod, a plurality of square grooves being arranged on the second connecting plate, and the limiting blocks extending through the interior of the square grooves.

[0008] Furthermore, the support rod is surrounded by a thread ring, the limit block is provided with a thread groove, and the support rod and the limit block are threadedly connected to the thread groove through the thread ring.

[0009] Furthermore, the first connecting plate and the second connecting plate are both provided with mounting grooves, a sliding assembly is provided in the mounting groove, a retaining plate is provided in the mounting groove, and the retaining plate is slidably connected in the mounting groove via the sliding assembly.

[0010] Furthermore, the sliding assembly includes a sliding groove and a sliding block, the sliding groove is symmetrically arranged on the inner wall of the mounting groove, the sliding block is slidably installed in the sliding groove, and the sliding block is fixedly installed at both ends of the retaining plate.

[0011] Furthermore, a plurality of retaining pins are arranged on the retaining plate, the two ends of the sound-absorbing cotton body are placed in the installation grooves, and the retaining plate fixes the sound-absorbing cotton body through the retaining pins.

[0012] Furthermore, a high temperature resistant layer is adhered to the inner side of the sound-absorbing cotton body, and the high temperature resistant layer is made of carbon fiber material.

[0013] Furthermore, a sound insulation layer is adhered to the outer side of the sound-absorbing cotton body, and the sound insulation layer is made of polyurethane foam.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The utility model facilitates the installation of the silencer cotton pipe fitting on the pipe body through the setting of the limit block. First, the silencer cotton body is wound on the pipe body, and then the limit block is rotated on the support rod through the threaded connection, and rotated to the same direction as the square groove, and then the square groove is aligned with the limit block, so that the limit block passes through the square groove, and finally the limit block is rotated to make the position of the limit block and the square groove intersect, and the first connecting plate and the second connecting plate are limitedly connected, so that the multi-layer composite silencer cotton pipe fitting can be quickly and conveniently installed on the pipe body, the operation is simple and convenient, and the installation efficiency of the multi-layer composite silencer cotton pipe fitting is improved.

[0016] 2. The utility model facilitates high-temperature protection of the silencer cotton body by setting a high-temperature resistant layer. The high-temperature resistant layer is made of carbon fiber material. The carbon fiber material has high high-temperature resistance and can maintain structural stability in extremely high temperature environments, further improving the high-temperature protection of the silencer cotton pipe fittings and effectively extending the service life of the silencer cotton pipe fittings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the device body;

[0018] Figure 2 It is a schematic diagram of the three-dimensional structure of the square groove of the device body;

[0019] Figure 3 It is a schematic diagram of the connection structure between the support rod and the limit block;

[0020] Figure 4 It is a three-dimensional structural schematic diagram of the position distribution of the lifting rod and the bolt;

[0021] Figure 5 for Figure 2 A magnified schematic diagram of the structure in Figure 1.

[0022] In the figure: 1. tube body; 11. sound-absorbing cotton body; 2. first connecting plate; 21. support rod; 211. limit block; 212. threaded groove; 214. threaded ring; 22. second connecting plate; 221. square groove; 23. mounting groove; 231. retaining plate; 232. retaining pin; 24. slide groove; 241. slider; 3. sound insulation layer; 31. high temperature resistant layer. DETAILED DESCRIPTION

[0023] 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.

[0024] Embodiment 1

[0025] like Figure 1 - Figure 4As shown, a multi-layer composite sound-absorbing cotton pipe fitting comprises a pipe body 1 and a sound-absorbing cotton body 11 wrapped around the pipe body 1, a first connecting plate 2 and a second connecting plate 22 are detachably connected on both sides of the sound-absorbing cotton body 11, a plurality of support rods 21 are fixedly installed on the first connecting plate 2, a limiting block 211 is threadedly connected to the support rod 21, a plurality of square grooves 221 are arranged on the second connecting plate 22, and the limiting block 211 passes through the interior of the square groove 221, a thread ring 214 is arranged around the support rod 21, a thread groove 212 is arranged on the limiting block 211, and the support rod 21 and the limiting block 211 are threadedly connected to the thread groove 212 through the thread ring 214, and the sound-absorbing cotton body 11 is wound around the exhaust pipe body 1 of the automobile, and the sound-absorbing cotton body 11 is composed of a composite of multi-layer sound-absorbing materials, corrosion-resistant materials and environmentally friendly materials, and the multi-layer composite sound-absorbing cotton pipe fitting is installed on the pipe body 1 to achieve the purpose of silencing the exhaust system of the automobile, thereby reducing the noise generated during the driving of the automobile, but due to The softness and plasticity of the multi-layer composite sound-absorbing cotton pipe make it more troublesome to install the sound-absorbing cotton pipe, and it is inconvenient to make the sound-absorbing cotton pipe fit tightly on the pipe body 1, resulting in the inability to effectively absorb and reduce noise, resulting in poor sound-absorbing effect. When it is convenient to install the sound-absorbing cotton pipe on the pipe body 1, the limit block 211 is provided to facilitate the installation of the sound-absorbing cotton pipe on the pipe body 1. First, the sound-absorbing cotton body 11 is wound on the pipe body 1, and then the limit block 211 is connected to the support through a threaded connection. The rod 21 is rotated to the same direction as the square groove 221, and then the square groove 221 is aligned with the limit block 211, so that the limit block 211 passes through the square groove 221, and finally the limit block 211 is rotated to make the position of the limit block 211 and the square groove 221 intersect, and the first connecting plate 2 and the second connecting plate 22 are limitedly connected, so that the multi-layer composite sound-absorbing cotton pipe fittings can be quickly and conveniently installed on the pipe body 1, the operation is simple and convenient, and the installation efficiency of the multi-layer composite sound-absorbing cotton pipe fittings is improved.

[0026] Furthermore, both the first connecting plate 2 and the second connecting plate 22 are provided with a mounting groove 23, a sliding assembly is provided in the mounting groove 23, a fixing plate 231 is provided in the mounting groove 23, and the fixing plate 231 is slidably connected in the mounting groove 23 through the sliding assembly, and a plurality of fixing pins 232 are provided on the fixing plate 231, and the two ends of the sound-absorbing cotton body 11 are placed in the mounting groove 23, and the fixing plate 231 fixes the sound-absorbing cotton body 11 through the fixing pins 232. When the sound-absorbing cotton body 11 is replaced, the fixing pins 232 are firstly screwed with a tool to release the fixation of the fixing plate 231, and then the fixing plate 231 is pushed to move upward through the sliding groove 24 to release the fixation of the sound-absorbing cotton body 11, and finally the sound-absorbing cotton body 11 is replaced and fixed, thereby increasing the recyclability of the connecting plate and reducing the waste of resources.

[0027] Furthermore, the sliding assembly includes a slide groove 24 and a slider 241. The slide groove 24 is symmetrically arranged on the inner wall of the installation groove 23. The slider 241 is slidably installed in the slide groove 24, and the slider 241 is fixedly installed at both ends of the fixing plate 231. The fixing plate 231 is limited by the slide groove 24 and the slider 241, so that the fixing plate 231 is slidably installed in the installation groove 23, thereby increasing the installation efficiency of the sound-absorbing cotton body 11.

[0028] Embodiment 2

[0029] like Figure 1 , Figure 2 and Figure 5 As shown, a multi-layer composite sound-absorbing cotton pipe fitting proposed by the utility model, compared with Example 1, as another implementation mode of the utility model, a high-temperature resistant layer 31 is adhered to the inner side of the sound-absorbing cotton body 11, and the high-temperature resistant layer 31 is made of carbon fiber. When the sound-absorbing cotton body 11 is protected from high temperature, the high-temperature resistant layer 31 is provided to facilitate high-temperature protection of the sound-absorbing cotton body 11. The high-temperature resistant layer 31 is made of carbon fiber. The carbon fiber material has high high-temperature resistance and can maintain structural stability in an extremely high temperature environment, which further improves the high-temperature protection of the sound-absorbing cotton pipe fittings and effectively extends the service life of the sound-absorbing cotton pipe fittings.

[0030] Furthermore, a sound insulation layer 3 is adhered to the outer side of the sound-absorbing cotton body 11, and the sound insulation layer 3 is made of polyurethane foam material. The polyurethane foam material is light and easy to process and has good sound absorption performance. It can further effectively isolate noise and improve the sound insulation performance of the sound-absorbing cotton pipe.

[0031] Working principle: When using this kind of multi-layer composite sound-absorbing cotton pipe fitting, first, when it is convenient to install the sound-absorbing cotton pipe fitting on the pipe body 1, a limiting block 211 is set to facilitate the installation of the sound-absorbing cotton pipe fitting on the pipe body 1. First, the sound-absorbing cotton body 11 is wrapped around the pipe body 1, and then the limiting block 211 is rotated on the support rod 21 through a threaded connection, and rotated to the same direction as the square groove 221, and then the square groove 221 is aligned with the limiting block 211, so that the limiting block 211 passes through the square groove 221, and finally the limiting block 211 is rotated so that the positions of the limiting block 211 and the square groove 221 are staggered, and the first connecting plate 2 and the second connecting plate 22 are limitedly connected, so that the multi-layer composite sound-absorbing cotton pipe fitting can be quickly and conveniently installed on the pipe body 1, and the operation is simple and convenient, which improves the installation efficiency of the multi-layer composite sound-absorbing cotton pipe fitting.

[0032] Finally, when the silencer cotton body 11 is protected from high temperatures, a high temperature resistant layer 31 is provided to facilitate high temperature protection of the silencer cotton body 11. The high temperature resistant layer 31 is made of carbon fiber material. The carbon fiber material has high high temperature resistance and can maintain structural stability in an extremely high temperature environment, further improving the high temperature protection of the silencer cotton pipe fittings and effectively extending the service life of the silencer cotton pipe fittings.

[0033] This is the working principle of this multi-layer composite sound-absorbing cotton pipe fitting.

[0034] The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A multi-layer composite sound-absorbing cotton pipe, comprising a pipe body (1) and a sound-absorbing cotton body (11) surrounding the pipe body (1), characterized in that: The first connecting plate (2) and the second connecting plate (22) are detachably connected on both sides of the sound-absorbing cotton body (11); a plurality of support rods (21) are fixedly mounted on the first connecting plate (2); a limit block (211) is threadedly connected to the support rod (21); a plurality of square grooves (221) are arranged on the second connecting plate (22); and the limit blocks (211) extend through the interior of the square grooves (221).

2. A multi-layer composite sound-absorbing cotton pipe fitting according to claim 1, characterized in that: The support rod (21) is provided with a threaded ring (214), the limit block (211) is provided with a threaded groove (212), and the support rod (21) and the limit block (211) are threadedly connected to the threaded groove (212) via the threaded ring (214).

3. The multi-layer composite sound-absorbing cotton pipe fitting according to claim 1 is characterized in that: The first connecting plate (2) and the second connecting plate (22) are both provided with a mounting groove (23), a sliding assembly is provided in the mounting groove (23), a retaining plate (231) is provided in the mounting groove (23), and the retaining plate (231) is slidably connected in the mounting groove (23) via the sliding assembly.

4. The multi-layer composite sound-absorbing cotton pipe fitting according to claim 3 is characterized in that: The sliding assembly comprises a sliding groove (24) and a sliding block (241), wherein the sliding groove (24) is symmetrically arranged on the inner wall of the mounting groove (23), the sliding block (241) is slidably mounted in the sliding groove (24), and the sliding block (241) is fixedly mounted on both ends of the fixing plate (231).

5. The multi-layer composite sound-absorbing cotton pipe fitting according to claim 3 is characterized in that: A plurality of retaining pins (232) are arranged on the retaining plate (231), the two ends of the sound-absorbing cotton body (11) are placed in the installation grooves (23), and the retaining plate (231) fixes the sound-absorbing cotton body (11) through the retaining pins (232).

6. The multi-layer composite sound-absorbing cotton pipe fitting according to claim 1, characterized in that: A high temperature resistant layer (31) is adhered to the inner side of the sound-absorbing cotton body (11), and the high temperature resistant layer (31) is made of carbon fiber material.

7. The multi-layer composite sound-absorbing cotton pipe fitting according to claim 1 is characterized in that: A sound insulation layer (3) is adhered to the outer side of the sound-absorbing cotton body (11), and the sound insulation layer (3) is made of polyurethane foam material.

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