A muffler device having a resistance composite structure

Abstract

The utility model discloses a kind of muffler equipment with impedance composite structure, it is related to muffler technical field, to solve the problem that the internal resistance sound-absorbing structure of existing muffler needs optimization, sound-absorbing performance needs to be further improved, its technical scheme main points include inner cylinder, the inner wall of the inner cylinder is fixedly connected with multiple sound-absorbing inner linings, the spacing distribution of multiple sound-absorbing inner linings is consistent, the sound-absorbing inner lining is composed of fairing and porous plate, the porous plate is in annular, and fairing is fixedly connected in the through-hole at porous plate central position, multiple parallel distribution The area of porous plate increases gradually, the fairing is conical cylinder, and the central position of fairing is provided with flow guide hole, multiple fairing common central axis. Reach the effect that resistance sound-absorbing and resistance sound-absorbing can be realized simultaneously, while the sound-absorbing structure of resistance sound-absorbing is optimized, can effectively improve the overall sound-absorbing performance.

Description

Technical Field

[0001] This utility model relates to the field of silencer technology, and in particular to a silencer device with an impedance composite structure. Background Technology

[0002] Pipeline exhaust silencers are devices specifically designed to reduce noise from various types of pipeline exhaust systems. They are widely used in industries such as power, chemical, metallurgy, and textiles. In scenarios such as power plant boiler steam emissions and air compressor exhaust, they can significantly reduce noise, bringing it into compliance with the "Industrial Enterprise Noise Hygiene Standard," creating a quiet production environment for enterprises and contributing to sustainable development.

[0003] The existing internal resistance silencing structure of the muffler needs to be optimized, and its silencing performance needs to be further improved. Utility Model Content

[0004] The purpose of this invention is to provide a silencer device with an impedance composite structure that can simultaneously achieve resistive and reactive silencing, while optimizing the silencing structure of the reactive silencing, thereby effectively improving the overall silencing performance.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A silencer device with an impedance composite structure includes an inner cylinder. Multiple silencing liners are fixedly connected to the inner wall of the inner cylinder. The spacing between the multiple silencing liners is consistent. Each silencing liner is composed of a flow guide and a perforated plate. The perforated plate is in the shape of a ring, and the flow guide is fixedly connected to a through hole at the central axis position of the perforated plate. The area of ​​the multiple parallel perforated plates increases progressively.

[0007] By adopting the above technical solution, the resistant silencing structure has been optimized, which can effectively improve the overall resistant silencing performance.

[0008] Furthermore, the flow guide is in the shape of a conical cylinder, and a flow guide hole is provided at the central axis position of the flow guide, and multiple flow guides share a common central axis.

[0009] By adopting the above technical solution, the transported gas can be diverted in stages.

[0010] Furthermore, the outer surface of the inner cylinder is wrapped with a layer of rock wool.

[0011] By adopting the above technical solutions, the ability to cope with high-temperature gases can be effectively improved.

[0012] Furthermore, the rock wool layer is wrapped with an outer shell, and a support strip is fixedly connected to the inner wall of the outer shell. The cavity between adjacent support strips is filled with high-temperature resistant sound insulation cotton.

[0013] By adopting the above technical solution, effective resistive noise reduction can be achieved.

[0014] Furthermore, an air inlet pipe and an air outlet pipe are fixedly connected at the middle positions of both ends of the inner cylinder.

[0015] By adopting the above technical solution, effective gas transmission operations can be performed.

[0016] Furthermore, a U-shaped heat exchange tube is inserted through the central axis of the inner cylinder, and both ends of the heat exchange tube pass through the side of the inner cylinder and are placed outside the inner cylinder.

[0017] By adopting the above technical solution, heat exchange operations can be performed.

[0018] In summary, the beneficial technical effects of this utility model are as follows:

[0019] 1. In use, the muffler can be installed at the exhaust port, so that the exhaust gas enters the interior of the inner cylinder from the intake pipe. Since multiple sound-absorbing liners are fixedly connected to the inner wall of the inner cylinder, and the perforated plate area on the multiple sound-absorbing liners gradually increases, the gas can be diverted by the guide shrouds on the multiple sound-absorbing liners when passing through the interior of the inner cylinder, thereby causing a sudden change in the gas flow cross section, thus achieving resistant silencing operation. The sound-absorbing liner structure inside the entire inner cylinder is stable, thereby making the muffler work stably.

[0020] 2. This utility model uses a rock wool layer wrapped around the outside of the inner cylinder to perform heat insulation, preventing the high temperature in the exhaust gas from affecting the sound-absorbing structure. By wrapping the rock wool layer with high-temperature resistant sound insulation cotton, the transmission of vibration can be isolated, thereby achieving resistive sound absorption and further improving the sound absorption effect. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 2 This is a schematic diagram of the internal structure of this utility model.

[0023] In the diagram: 1. Inlet pipe; 2. Outer shell; 3. Outlet pipe; 4. Heat exchange pipe; 5. Inner cylinder; 6. Support strip; 7. High-temperature sound insulation cotton; 8. Rock wool layer; 9. Sound-absorbing lining; 10. Flow guide; 11. Perforated plate. Detailed Implementation

[0024] The method of this utility model will be further described in detail below with reference to the accompanying drawings.

[0025] Reference Figure 1 , Figure 2 A silencer device with an impedance composite structure includes an inner cylinder 5. Multiple silencing liners 9 are fixedly connected to the inner wall of the inner cylinder 5. The spacing between the multiple silencing liners 9 is uniform. Each silencing liner 9 consists of a flow guide shroud 10 and a perforated plate 11. The perforated plate 11 is in the shape of a ring, and the flow guide shroud 10 is fixedly connected to a through hole at the central axis position of the perforated plate 11. The areas of the multiple parallel perforated plates 11 gradually increase. The flow guide shroud 10 is conical in shape, and a flow guide hole is provided at the central axis position of the flow guide shroud 10. The multiple flow guide shrouds 10 share a central axis. The inner cylinder 5 has flow guide holes at the middle positions of both ends. The silencer is fixedly connected to an inlet pipe 1 and an outlet pipe 3. During use, the silencer can be installed at the exhaust port, allowing the emitted gas to enter the interior of the inner cylinder 5 through the inlet pipe 1. Since multiple sound-absorbing liners 9 are fixedly connected to the inner wall of the inner cylinder 5, and the area of ​​the perforated plates 11 on the multiple sound-absorbing liners 9 gradually increases, the gas can be diverted by the guide shrouds 10 on the multiple sound-absorbing liners 9 when passing through the interior of the inner cylinder 5, thereby causing a sudden change in the gas flow cross section, thus achieving resistant silencing operation. The structure of the sound-absorbing liners 9 inside the entire inner cylinder 5 is stable, thus making the silencer work stably.

[0026] Reference Figure 2 The inner cylinder 5 is wrapped with a rock wool layer 8, and the outer shell 2 is wrapped with the rock wool layer 8. Support strips 6 are fixedly connected to the inner wall of the outer shell 2. The cavity between adjacent support strips 6 is filled with high-temperature resistant sound insulation cotton 7. By wrapping the inner cylinder 5 with rock wool layer 8, the rock wool layer 8 can be used for heat insulation, avoiding the impact of high temperature in the exhaust gas on the sound-absorbing structure. By wrapping the rock wool layer 8 with high-temperature resistant sound insulation cotton 7, the high-temperature resistant sound insulation cotton 7 can be used to isolate the transmission of vibration, thereby achieving resistive sound absorption and further improving the sound absorption effect.

[0027] Reference Figure 2 A U-shaped heat exchange tube 4 runs through the central axis of the inner cylinder 5, with both ends of the heat exchange tube 4 passing through the side of the inner cylinder 5 and placed outside the inner cylinder 5. Heat exchange fluid can be introduced through the heat exchange tube 4 when silencing the emission of high-temperature gas, thereby effectively recovering some of the heat energy in the gas.

[0028] Working principle: During use, the silencer is installed at the exhaust port, allowing the emitted gas to enter the interior of the inner cylinder 5 through the intake pipe 1. Since multiple sound-absorbing liners 9 are fixedly connected to the inner wall of the inner cylinder 5, and the area of ​​the perforated plates 11 on the multiple sound-absorbing liners 9 gradually increases, the gas can be diverted by the guide shrouds 10 on the multiple sound-absorbing liners 9 when passing through the interior of the inner cylinder 5, thereby causing a sudden change in the gas flow cross section, thus achieving resistive silencing operation. At the same time, by wrapping the outer side of the inner cylinder 5 with a rock wool layer 8, the rock wool layer 8 can be used for heat insulation, preventing the high temperature in the emitted gas from affecting the silencing structure. By wrapping the outer side of the rock wool layer 8 with high-temperature resistant sound insulation cotton 7, the high-temperature resistant sound insulation cotton 7 can be used to isolate the transmission of vibration, thus achieving resistive silencing operation. During the entire silencing process, when silencing the emitted high-temperature gas, heat exchange fluid is introduced through the heat exchange pipe 4, thereby effectively recovering some of the heat energy in the gas.

[0029] The specific real-time examples described herein are preferred real-time examples of this utility model and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A silencer device with an impedance composite structure, comprising an inner cylinder (5), characterized in that: Multiple sound-absorbing liners (9) are fixedly connected to the inner wall of the inner cylinder (5). The spacing of the multiple sound-absorbing liners (9) is consistent. The sound-absorbing liners (9) are composed of a flow guide (10) and a perforated plate (11). The perforated plate (11) is in the shape of a ring, and the flow guide (10) is fixedly connected to the through hole at the central axis position of the perforated plate (11). The area of ​​the multiple parallel perforated plates (11) increases step by step.

2. The silencer device with an impedance composite structure according to claim 1, characterized in that: The flow guide (10) is in the shape of a conical cylinder, and a flow guide hole is provided at the central axis position of the flow guide (10). Multiple flow guides (10) share a common central axis.

3. A silencer device with an impedance composite structure according to claim 1, characterized in that: The inner cylinder (5) is wrapped with a layer of rock wool (8).

4. A silencer device with an impedance composite structure according to claim 3, characterized in that: The rock wool layer (8) is wrapped with an outer shell (2), and a support strip (6) is fixedly connected to the inner wall of the outer shell (2). The cavity between adjacent support strips (6) is filled with high-temperature resistant sound insulation cotton (7).

5. A silencer device with an impedance composite structure according to claim 1, characterized in that: An air inlet pipe (1) and an air outlet pipe (3) are fixedly connected at the middle positions of both ends of the inner cylinder (5).

6. A silencer device with an impedance composite structure according to claim 1, characterized in that: A U-shaped heat exchange tube (4) passes through the central axis of the inner cylinder (5), and both ends of the heat exchange tube (4) pass through the side of the inner cylinder (5) and are placed outside the inner cylinder (5).

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