Curved sheet type silencer with empennage

Abstract

The utility model discloses a curved sheet type silencer with an empennage, relates to the technical field of silencers, and aims to solve the problems that a matrix type silencer and a sheet type silencer need a longer silencing channel length or larger arrangement density to complete the required silencing amount, consumables are serious, the sound has a gap for direct penetration, and the noise is poor. In order to solve the problems that the overall silencing effect is poor due to the fact that a bent sheet type silencer is arranged on a pipeline, huge pressure loss can be generated when the bent sheet type silencer is used for silencing, and the overall practicability is low, the key point of the technical scheme is that the bent sheet type silencer comprises an installation frame body, and silencing sheets used for pipeline silencing are fixedly connected into the installation frame body; the interior of the mounting frame body is detachably connected with a tail wing plate used for reducing the pressure loss of the silencing sheets, the silencing sheets and the tail wing plate are longitudinally distributed in the mounting frame body at equal intervals in a staggered mode, and the silencing sheets and the tail wing plate are designed in a fluid arc-shaped angle mode. The effects of improving the effective sound absorption efficiency, reducing the pressure loss and facilitating the disassembly and assembly of the tail wing plate are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of mufflers, in particular to a curved-blade muffler with a tail wing. Background Art

[0002] A muffler is a noise reduction device for air flow ducts that also transmit noise. It can use pipes and elbows with sound-absorbing linings or pipes with sudden changes in cross-sectional area and other discontinuous acoustic impedance. It can attenuate or reflect the noise in the pipe. The former is called a resistive muffler and the latter is called a reactive muffler. It can reduce the exhaust noise of the engine and allow high-temperature exhaust gas to be discharged safely and effectively.

[0003] There are two common silencers on the market: "matrix silencer", which usually has a length of about 2400mm+ to achieve 20dB and a spacing of 120mm; "chip silencer", which usually has a length of about 2000mm+ to achieve 20dB and a spacing of 100mm to ensure a good overall silencing effect.

[0004] For example, a fluid curved-plate silencer with application number CN202220610190.9 uses a rebounder and a trigger block to install and disassemble the silencer, ensuring that the damaged silencer can be easily repaired and replaced. At the same time, the overall installation is stable and will not shake, which makes maintenance easier. It ensures that the guide rod can move inside the adjustment sleeve, thereby ensuring that the spacing between the silencer plates can be adjusted, making it convenient for the overall system to adjust to the optimal silencer state, resulting in an easy-to-adjust silencer effect.

[0005] The above-mentioned existing technical solutions have the following defects: the high sound attenuation of matrix silencers and plate silencers requires a longer silencer channel length or a larger arrangement density to achieve the required sound attenuation, which results in serious material consumption and gaps for direct sound penetration, resulting in poor overall sound attenuation effect. The curved plate silencer will produce huge pressure loss during sound attenuation and has low overall practicality. Utility Model Content

[0006] The utility model aims to provide a curved-plate muffler with a tail wing which increases the overall muffler effect and is easy to assemble.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A curved-blade silencer with a tail wing comprises a mounting frame, a silencer for pipe silencer fixedly connected inside the mounting frame, a tail wing plate for reducing pressure loss of the silencer wing detachably connected inside the mounting frame, the silencer wing and the tail wing plate being staggered and distributed longitudinally at equal intervals inside the mounting frame, and the silencer wing and the tail wing plate being designed with a fluid arc angle.

[0009] By adopting the above technical solution, the airflow entering the muffler is silenced by using the silencer sheet and tail wing plate designed with a fluid arc angle. At the same time, the tail wing plate will reduce the huge pressure loss generated by the muffler during silencing. The tail wing plate can also ensure the smooth passage of the airflow, thereby ensuring an overall good silencing effect.

[0010] Furthermore, the upper wall of the installation frame and the rear end of the muffler plate are both provided with guide grooves for guiding the installation of the tail wing plate, and the guide grooves are adapted to the shape and size of the tail wing plate.

[0011] By adopting the above technical solution, the guide grooves opened on the upper wall of the installation frame and the rear end of the silencer plate facilitate the installation of the tail wing panel, thereby ensuring overall good silencer and ventilation effects and increasing overall practicality.

[0012] Furthermore, a mounting through hole is provided inside the tail wing panel, and a fixing column for positioning and mounting the tail wing panel is detachably connected inside the mounting frame, and the fixing column is adapted in shape and size to the mounting through hole.

[0013] By adopting the above technical solution, the fixing column can pass through the installation hole to position and install the tail wing panel, and the overall tail wing panel can be quickly positioned. At the same time, no offset will occur during the connection between the fixing column and the installation hole, ensuring a good overall installation effect.

[0014] Furthermore, a fixing screw is threadedly connected to the side wall of the installation frame, a positioning rod is fixedly connected to a side of the fixing screw close to the fixing column, and a fixing hole matched with the positioning rod is provided inside the fixing column.

[0015] By adopting the above technical solution, a fixing screw is used to pass through the installation frame to insert and position the positioning rod into the fixing hole, thereby ensuring that the fixing screw can fix the tail wing panel. However, the fixation is not directly threaded by the screw, so as to prevent damage to the tail wing panel caused by multiple disassembly and assembly of the whole.

[0016] Furthermore, the fixing screws and the positioning rods are symmetrically distributed with respect to a vertical center line of the fixing column, and both the positioning rods and the fixing holes are smooth structures.

[0017] By adopting the above technical solution, the positioning rod with a smooth surface structure and the fixing hole are convenient to be plugged and fixed, thereby ensuring an overall good installation.

[0018] Furthermore, the side wall of the installation frame is provided with an embedding groove for embedding the fixing screws, and the embedding grooves are distributed correspondingly to the fixing screws.

[0019] By adopting the above technical solution, the fixing screws can be placed inside the embedding groove, thereby preventing the overall outer side from bulging, making it easier to install the overall body and increasing the overall practicality.

[0020] In summary, the beneficial technical effects of the utility model are:

[0021] 1. The muffler and tail wing plates adopt a fluid arc angle design. Based on the simulation of fluid mechanics, an arc angle design with less pressure loss is adopted. Sound cannot directly penetrate the muffler, which has a certain shielding "sound insulation" effect. In addition, the number of refractions and angles of sound in the curved channel are more complex, which increases the effective sound absorption efficiency of the muffler.

[0022] 2. The tail wing plate and silencer plate are staggered with equal spacing. The silencer plate and tail wing plate silence the airflow entering the silencer. At the same time, the tail wing plate will reduce the huge pressure loss of the silencer during silencing. The tail wing plate can also ensure the smooth passage of the airflow, ensure the overall good silencing effect, and produce the effect of reducing pressure loss;

[0023] 3. The fixing screws are used to drive the positioning rods to connect with the fixing sockets to install the tail wing panel. The tail wing panel is easy to install and disassemble, so it is convenient to repair and clean the tail wing panel. At the same time, the tail wing panel is not directly threaded with the fixing screws to prevent damage to the tail wing panel caused by multiple disassembly and assembly, thus making it easy to disassemble and assemble the tail wing panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the front three-dimensional structure of the utility model;

[0025] Figure 2 This is a schematic diagram of the three-dimensional structure of the back side of the utility model;

[0026] Figure 3 This is a schematic diagram of the split structure of the utility model;

[0027] Figure 4 This is a schematic diagram of the split structure of the tail wing panel of the utility model;

[0028] Figure 5 It is a schematic diagram of the cross-sectional structure of the utility model.

[0029] In the figure: 1. Installation frame; 2. Silencer; 3. Tail wing plate; 4. Guide groove; 5. Installation through hole; 6. Fixing column; 7. Fixing screw; 8. Positioning rod; 9. Fixing socket; 10. Embedding groove. DETAILED DESCRIPTION

[0030] The method of the utility model is further described in detail below in conjunction with the accompanying drawings.

[0031] See attached Figure 1 and Figure 4 , a curved-piece silencer with a tail wing is provided, comprising an installation frame 1, a silencer sheet 2 for pipe silencing is fixedly connected inside the installation frame 1, a tail wing plate 3 for reducing the pressure loss of the silencer sheet 2 is detachably connected inside the installation frame 1, the silencer sheet 2 and the tail wing plate 3 are staggered and distributed at equal intervals in the longitudinal direction inside the installation frame 1, the silencer sheet 2 and the tail wing plate 3 are designed with a fluid arc angle, and the silencer sheet 2 and the tail wing plate 3 designed with a fluid arc angle can fully guide the airflow and silence the airflow at the same time, thereby increasing the overall silencing and diversion effect, the silencer sheet 2 is filled with a glass wool structure, and the silencer sheet 2 and the tail wing plate 3 are both made of galvanized sheet, and the upper wall inside the installation frame 1 and the rear end of the silencer sheet 2 are provided with a guide groove 4 for the installation and diversion of the tail wing plate 3, the guide groove 4 is adapted to the shape and size of the tail wing plate 3, and the guide groove 4 facilitates the installation of the tail wing plate 3, thereby ensuring a good overall installation effect.

[0032] Reference Figure 3 and Figure 4 The tail wing panel 3 is provided with an installation through hole 5, and a fixing column 6 for positioning and installing the tail wing panel 3 is detachably connected inside the installation frame 1. The fixing column 6 is adapted to the shape and size of the installation through hole 5, and the installation structure of the fixing column 6 and the installation through hole 5 is stable, thereby ensuring a good installation effect of the tail wing panel 3. The side wall of the installation frame 1 is threadedly connected with a fixing screw 7, and a positioning plug rod 8 is fixedly connected to the fixing screw 7 on a side close to the fixing column 6. A fixing socket 9 adapted to the positioning plug rod 8 is provided inside the fixing column 6. During the insertion of the positioning plug rod 8 and the fixing socket 9, a good installation effect of the fixing column 6 is ensured, thereby ensuring an overall sufficient positioning and installation effect. The fixing screw 7 and the positioning plug rod 8 are symmetrically distributed corresponding to the vertical center line of the fixing column 6. The positioning plug rod 8 and the fixing socket 9 both have smooth surface structures. The positioning plug rod 8 and the fixing socket 9 with smooth surface structures can be quickly docked and installed, which is convenient for installing and disassembling the tail wing panel 3.

[0033] Reference Figure 2 The side wall of the mounting frame 1 is provided with an embedding groove 10 for embedding the fixing screw 7. The embedding groove 10 is distributed correspondingly to the fixing screw 7. The fixing screw 7 will be installed in the embedding groove 10 and will not affect the overall installation.

[0034] Working principle: The airflow entering the muffler is silenced by using the silencer plate 2 and the tail wing plate 3 designed with a fluid arc angle. At the same time, the tail wing plate will reduce the huge pressure loss generated by the muffler during silencing. The tail wing plate can also ensure smooth passage of the airflow to ensure a good overall silencing effect. During the overall installation process, the positioning plug rod 8 is driven by the fixing screw 7 to connect with the fixing hole 9 inside the fixing column 6 to complete the fixation of the tail wing plate 3. At the same time, the tail wing plate 3 is not directly threadedly connected to the fixing screw 7 to prevent damage to the tail wing plate 3 due to multiple disassembly and assembly. The fixing screw 7 will be installed in the embedding groove 10, which will not affect the overall installation, thereby ensuring a good overall installation effect while increasing the overall silencing effect.

[0035] The embodiments of this specific implementation method are all preferred embodiments of the utility model, and are not intended to limit the protection scope of the utility model. Therefore, all equivalent changes made based on the structure, shape, and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A curved-blade muffler with a tail wing, comprising a mounting frame (1), characterized in that: A silencer sheet (2) for silencing the pipe is fixedly connected inside the installation frame (1), and a tail wing plate (3) for reducing the pressure loss of the silencer sheet (2) is detachably connected inside the installation frame (1). The silencer sheet (2) and the tail wing plate (3) are staggered and distributed at equal intervals in the longitudinal direction inside the installation frame (1), and the silencer sheet (2) and the tail wing plate (3) are designed with a fluid arc angle.

2. The curved-blade muffler with a tail wing according to claim 1, characterized in that: The inner upper wall of the installation frame (1) and the rear end of the silencer plate (2) are both provided with a guide groove (4) for guiding the installation of the tail wing plate (3), and the guide groove (4) is adapted in shape and size to the tail wing plate (3).

3. The curved-blade muffler with a tail wing according to claim 2, characterized in that: The tail wing plate (3) is provided with a mounting through hole (5), and the mounting frame (1) is detachably connected with a fixing column (6) for positioning and mounting the tail wing plate (3), and the fixing column (6) is adapted in shape and size to the mounting through hole (5).

4. The curved-blade muffler with a tail wing according to claim 3, characterized in that: The side wall of the installation frame (1) is threadedly connected with a fixing screw (7), and a side of the fixing screw (7) close to the fixing column (6) is fixedly connected with a positioning rod (8), and a fixing hole (9) adapted to the positioning rod (8) is provided inside the fixing column (6).

5. The curved-blade muffler with a tail wing according to claim 4, characterized in that: The fixing screw (7) and the positioning plug rod (8) are symmetrically distributed with respect to the vertical center line of the fixing column (6), and the positioning plug rod (8) and the fixing plug hole (9) are both smooth-surface structures.

6. The curved-blade muffler with a tail wing according to claim 5, characterized in that: The side wall of the installation frame (1) is provided with an embedding groove (10) for embedding the fixing screw (7), and the embedding groove (10) is distributed corresponding to the fixing screw (7).

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