Emptying pipe impedance combined type silencer
By designing a drain tube impedance composite muffler including a rear silencer, a front silencer, a conical cover and a metal filter, the problems of poor sound absorption and lack of gas filtration in the existing muffler are solved, and efficient sound absorption and gas filtration are achieved.
Patent Information
- Application Number
- CN202421575099.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-05
- Publication Date
- 2025-03-18
- Estimated Expiration
- 2034-07-05
AI Technical Summary
The existing drain pipe impedance composite muffler cannot follow the long sound absorption path, the sound absorption effect is not obvious, and the gas filtration effect is lacking, so the best sound silence effect cannot be achieved.
A composite silencer of the drain pipe impedance is designed, including a rear silencer, a front silencer, a rear conical cover and a front conical cover. The pipe shrinkage diameter is formed by connecting the flange and the transition tube, combining the metal filter and the silence column to improve the sound absorption effect along the long sound absorption path, and has a gas filtration function.
Through this design, the impedance composite muffler greatly improves the sound absorption effect along the long sound absorption path, achieves the best sound silence effect, and has the function of gas filtration.
Smart Images
Figure CN222633300U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of mufflers, in particular to an exhaust pipe impedance composite muffler. Background Art
[0002] The exhaust pipe impedance composite muffler is a device for reducing noise. Its characteristic is that the muffler principles of the resistive muffler and the reactive muffler are combined through appropriate structures to achieve effective noise suppression. The impedance composite muffler uses impedance mismatch to eliminate or reduce noise. It consists of multiple units with different impedances, which can be sound absorbing materials, reflectors or other forms of impedance elements.
[0003] The existing exhaust pipe impedance composite silencer cannot follow a long sound absorption path, has an insignificant sound absorption effect, cannot achieve the best sound silencing effect, and does not have a gas filtering effect. Utility Model Content
[0004] In view of the problems in the prior art, the utility model provides an exhaust pipe impedance composite silencer, which greatly improves the sound absorption effect along a long sound absorption path, thereby achieving the best sound elimination effect and having a gas filtering effect.
[0005] The technical solution adopted by the utility model to solve the technical problem is an exhaust pipe impedance composite muffler, comprising a rear muffler, a front muffler, a rear conical cover and a front conical cover, the small-diameter parts of the front conical cover and the rear conical cover are connected with a transition pipe, one end of the transition pipe is welded with a connecting flange, the front conical cover and the rear conical cover are connected by clamping the connecting flange, one end of the transition pipe is provided with a placement groove and a metal filter screen is clamped in the placement groove;
[0006] The front and rear cone covers are welded with front and rear silencers at their large diameters, respectively. Support rings are sleeved inside the front and rear silencers. A limit plate is installed on one side of the support ring by screws, and silencer columns are evenly spaced on the limit plate through mounting holes.
[0007] By adopting the above technical solution, the impedance composite silencer greatly improves the sound absorption effect along the long sound absorption path, thereby achieving the best sound silencing effect and having the effect of gas filtering.
[0008] Specifically, a mounting sleeve is welded to one end of the front silencer, and mounting bolts are installed at equal distances on the outer side of the mounting sleeve through bolt holes.
[0009] Specifically, the silencer column is made of glass fiber material.
[0010] By adopting the above technical solution, the sound absorption effect is greatly improved, thereby achieving the best sound-absorbing effect, corrosion resistance, high temperature resistance and durability.
[0011] Specifically, a protective net is installed on the other end of the rear silencer through screws.
[0012] Specifically, screw holes are evenly spaced on the connecting flange and locking bolts are installed in the screw holes.
[0013] By adopting the above technical solution, the locking bolts on the connecting flange are disassembled, so that the metal filter can be easily removed for cleaning and replacement.
[0014] Beneficial effects of the utility model:
[0015] (1) The exhaust pipe impedance composite silencer described in the utility model is convenient for installation and fixing on the equipment to be silenced by using a mounting sleeve and mounting bolts. The small-diameter parts of the front cone cover and the rear cone cover are connected by a connecting flange to form a pipe reduction, so that sound waves of certain frequencies propagating along the pipe are reflected back toward the sound source at the mutation point, thereby achieving the purpose of silencer. In addition, a metal filter is used to reduce the propagation of noise and achieve the effect of gas filtering.
[0016] (2) The exhaust pipe impedance composite silencer described in the utility model can remove the locking bolts on the connecting flange to facilitate the removal of the metal filter for cleaning and replacement. The silencer columns in the front silencer and the rear silencer are used, and the silencer columns are arranged along the direction of the rear silencer and the front silencer, along the long sound absorption path, which greatly improves the sound absorption effect, thereby achieving the best sound absorption effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The utility model is further described below in conjunction with the accompanying drawings and embodiments.
[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0019] Figure 2 It is an exploded view of the utility model;
[0020] Figure 3 For this utility model Figure 2 Schematic diagram of the structure at point A.
[0021] In the figure: 1. rear silencer; 2. rear cone cover; 3. connecting flange; 4. front cone cover; 5. front silencer; 6. mounting sleeve; 7. mounting bolts; 8. transition pipe; 9. protective net; 10. silencer column; 11. support ring; 12. limit plate; 13. placement groove; 14. metal filter; 15. locking bolt. DETAILED DESCRIPTION
[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.
[0023] In order to impedance the composite silencer along the long sound absorption path, the sound absorption effect is greatly improved, thereby achieving the best sound silencing effect, and has the effect of gas filtering, such as Figure 1-3 As shown, the exhaust pipe impedance composite muffler described in the utility model comprises a rear muffler 1, a front muffler 5, a rear conical cover 2 and a front conical cover 4, the small-diameter parts of the front conical cover 4 and the rear conical cover 2 are connected with a transition pipe 8, one end of the transition pipe 8 is welded with a connecting flange 3, the front conical cover 4 and the rear conical cover 2 are connected by the connecting flange 3, and one end of the transition pipe 8 is provided with a placement groove 13, and a metal filter screen 14 is clamped in the placement groove 13;
[0024] A front silencer 5 and a rear silencer 1 are welded to the large-diameter parts of the front conical cover 4 and the rear conical cover 2, respectively. A support ring 11 is sleeved inside the front silencer 5 and the rear silencer 1. A limiting plate 12 is installed on one side of the support ring 11 by screws, and silencer columns 10 are arranged at equal distances on the limiting plate 12 through mounting holes.
[0025] When in use, the impedance composite silencer greatly improves the sound absorption effect along the long sound absorption path, thereby achieving the best sound silencing effect and having the effect of gas filtering.
[0026] For example, Figure 1 As shown, the utility model also includes that a mounting sleeve 6 is welded to one end of the front silencer 5 and mounting bolts 7 are installed at equal distances on the outer side of the mounting sleeve 6 through bolt holes.
[0027] When in use, the mounting sleeve 6 and the mounting bolts 7 are used to conveniently mount and fix it on the equipment to be silenced.
[0028] For example, Figure 2 As shown, the utility model also includes that the silencer column 10 is specifically made of glass fiber material.
[0029] When in use, the sound absorption effect is greatly improved, thereby achieving the best sound-absorbing effect, corrosion resistance, high temperature resistance, and durability.
[0030] For example, Figure 2 As shown, the utility model also includes that a protective net 9 is installed at the other end of the rear silencer 1 by screws.
[0031] When in use, the protective net 9 is used to protect the silencer column 10 in the rear silencer tube 1 .
[0032] For example, Figure 1, 3 As shown, the utility model also includes that screw holes are evenly spaced on the connecting flange 3 and locking bolts 15 are installed in the screw holes.
[0033] When in use, the locking bolts 15 on the connecting flange 3 are removed to facilitate the removal of the metal filter 14 for cleaning and replacement.
[0034] When the utility model is used, the mounting sleeve 6 and the mounting bolt 7 are used to facilitate the installation and fixing of the utility model on the equipment to be silenced;
[0035] The front cone cover 4 and the rear cone cover 2 are connected at the small diameter through the connecting flange 3 to form a pipeline reduction, so that the sound waves of certain frequencies propagating along the pipeline are reflected back to the direction of the sound source at the mutation point to achieve the purpose of noise elimination, and the metal filter 14 is used to reduce the propagation of noise and play a gas filtering effect;
[0036] The locking bolts 15 on the connecting flange 3 are removed to facilitate the removal of the metal filter 14 for cleaning and replacement. The silencer columns 10 in the front silencer 5 and the rear silencer 1 are utilized, and the silencer columns 10 are arranged along the direction of the rear silencer 1 and the front silencer 5, along the long sound absorption path, which greatly improves the sound absorption effect, thereby achieving the best sound absorption effect.
[0037] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions in the specification are only to illustrate the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the protection required by the utility model. The scope of protection required by the utility model is defined by the attached claims and their equivalents.
Claims
1. An exhaust pipe impedance composite muffler, characterized in that: The invention comprises a rear silencer (1), a front silencer (5), a rear conical cover (2) and a front conical cover (4); the front conical cover (4) and the rear conical cover (2) are both connected to a transition pipe (8) at their small-diameter positions; one end of the transition pipe (8) is welded with a connecting flange (3); the front conical cover (4) and the rear conical cover (2) are connected by snapping together through the connecting flange (3); one end of the transition pipe (8) is provided with a placement groove (13) and a metal filter screen (14) is clamped in the placement groove (13); A front silencer (5) and a rear silencer (1) are respectively welded at the large-diameter portions of the front conical cover (4) and the rear conical cover (2); a support ring (11) is sleeved inside the front silencer (5) and the rear silencer (1); a limit plate (12) is installed on one side of the support ring (11) by means of screws; and silencer columns (10) are arranged at equal distances on the limit plate (12) through mounting holes.
2. The exhaust pipe impedance composite muffler according to claim 1, characterized in that: A mounting sleeve (6) is welded to one end of the front silencer (5), and mounting bolts (7) are equidistantly mounted on the outer side of the mounting sleeve (6) through bolt holes.
3. The exhaust pipe impedance composite muffler according to claim 1, characterized in that: The silencer column (10) is specifically made of glass fiber material.
4. The exhaust pipe impedance composite muffler according to claim 1, characterized in that: The other end of the rear silencer (1) is mounted with a protective net (9) via screws.
5. The exhaust pipe impedance composite muffler according to claim 1, characterized in that: The connecting flange (3) is provided with screw holes at equal distances and locking bolts (15) are installed in the screw holes.