Assembly type rectangular silencer

Abstract

The utility model relates to the technical field of silencers, in particular to an assembly type rectangular silencer which comprises a shell, limiting grooves are formed in the positions, close to the middle, of the inner wall of the top end and the inner wall of the bottom end of the shell, mounting plates are mounted on the positions, close to one sides of the limiting grooves, of the two sides of the shell, and through holes are formed in the mounting plates. Fixing rods are movably arranged in the through holes, one ends of the fixing rods are rotationally connected with balls, mounting discs are mounted at the other ends of the fixing rods, handheld rods are mounted on the outer sides of the mounting discs, and springs are mounted at the positions, close to the two ends, of the inner sides of the mounting discs. Through arrangement of parts such as a mounting plate, a through hole, a fixing rod, a ball, a mounting disc, a handheld rod, a spring, a rotating rod, a fixing block and a fixing hole, the problems that an existing silencer is integrally designed, and when the internal structure of the silencer is damaged, the internal parts of the silencer cannot be conveniently and rapidly disassembled and maintained can be effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of mufflers, in particular to an assembled rectangular muffler. Background Art

[0002] Muffler refers to a noise reduction device that can be used to reduce the noise in the air flow pipe by using pipes and elbows with sound-absorbing lining or pipes with sudden changes in cross-sectional area and other discontinuous acoustic impedance, so as to attenuate or reflect the noise in the pipe. The former is called resistive muffler, the latter is called reactive muffler, and there are also impedance composite mufflers.

[0003] Existing mufflers are all of one-piece design. When the internal structure of the muffler is damaged, it is difficult to conveniently and quickly disassemble and repair its internal parts. Therefore, corresponding improvements are needed based on the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide an assembled rectangular muffler to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an assembled rectangular muffler comprises a shell, wherein the top inner wall and the bottom inner wall of the shell are both provided with limit grooves at the middle positions, and mounting plates are installed at the positions on both sides of the shell near the limit grooves, through holes are provided inside the mounting plates, and fixing rods are movably provided inside the through holes, one end of the fixing rods is rotatably connected with balls, and the other end of the fixing rods is installed with mounting plates, hand-held rods are installed on the outer side of the mounting plates, and springs are installed on the inner side of the mounting plates near the two ends, limit rods are slidably provided inside the two groups of limit grooves, and the inner sides of the two groups of limit rods are installed on one side of the sound-absorbing sponge board at the two ends, the inner sides of the two groups of sound-absorbing sponge boards are installed on one end of the muffler, one end of the two groups of limit rods is rotatably connected with the rotating rod through a bearing, and one end of the rotating rod is installed with a fixing block, and the side surface of the fixing block is provided with a fixing hole.

[0006] Preferably, one end of the fixing rod passes through the interior of the mounting plate through a through hole.

[0007] Preferably, one end of the spring is mounted on a side surface of the mounting plate.

[0008] Preferably, the outer diameter of the fixing rod is matched with the inner diameter of the fixing hole, and one end of the fixing rod passes through the fixing hole and penetrates into the interior of the fixing block.

[0009] Preferably, the two groups of sound-absorbing sponge panels are of equal size, and the size of the outer frames of the two groups of sound-absorbing sponge panels is matched with the size of the inner frame of the shell.

[0010] Preferably, the lengths of the two groups of limiting rods are matched with the lengths of the limiting slots.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The arrangement of components such as a mounting plate, a through hole, a fixing rod, a ball, a mounting plate, a hand-held rod, a spring, a rotating rod, a fixing block and a fixing hole can effectively solve the problem that the existing mufflers are all of an integrated design, and when the internal structure of the muffler is damaged, its internal components cannot be conveniently and quickly disassembled and repaired. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional structural schematic diagram of the main body of the utility model.

[0014] Figure 2 for Figure 1 Enlarged schematic diagram at point A in the middle.

[0015] Figure 3 It is a three-dimensional structural schematic diagram of the sound-absorbing sponge board of the utility model.

[0016] Figure 4 It is a three-dimensional structural schematic diagram of the shell of the utility model.

[0017] Figure 5 for Figure 4 Enlarged schematic diagram of point B in the middle.

[0018] In the figure: 1. Shell; 11. Limiting groove; 12. Mounting plate; 13. Through hole; 14. Fixing rod; 15. Ball; 16. Mounting plate; 17. Hand-held rod; 18. Spring; 2. Sound-absorbing sponge board; 21. Silencer; 22. Limiting rod; 23. Rotating rod; 24. Fixing block; 25. Fixing hole. DETAILED DESCRIPTION

[0019] 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.

[0020] according to Figure 1-Figure 5As shown, it includes a shell 1, and a limit groove 11 is provided at the middle position of the top inner wall and the bottom inner wall of the shell 1, and mounting plates 12 are installed at the positions on both sides of the shell 1 near the limit groove 11, and the interior of the mounting plate 12 is provided with a through hole 13, and a fixing rod 14 is movably arranged inside the through hole 13, one end of the fixing rod 14 passes through the interior of the mounting plate 12 through the through hole 13, one end of the fixing rod 14 is rotatably connected to the inside of the mounting plate 12, and a mounting plate 16 is installed at the other end of the fixing rod 14, a hand-held rod 17 is installed on the outer side of the mounting plate 16, and springs 18 are installed on the inner side of the mounting plate 16 near both ends, and one end of the spring 18 is installed on the surface of one side of the mounting plate 12.

[0021] The two groups of limit grooves 11 are both slidably provided with limit rods 22, and the inner sides of the two groups of limit rods 22 are installed with one side of the sound-absorbing sponge board 2 at both ends, and the two groups of sound-absorbing sponge boards 2 are provided with sound-absorbing sponges inside. The length of the two groups of limit rods 22 is adapted to the length of the limit grooves 11, the sizes of the two groups of sound-absorbing sponge boards 2 are equal, and the outer frame sizes of the two groups of sound-absorbing sponge boards 2 are adapted to the inner frame sizes of the shell 1, and the inner sides of the two groups of sound-absorbing sponge boards 2 are installed with one end of the silencer 21, the interior of the silencer 21 is hollow, and the silencer 21 is provided with a sound-absorbing sponge. A metal sound-absorbing panel is attached to the inner wall of the sound cylinder 21, and the interior of the sound-absorbing panel 21 is filled with glass fiber wool and petroleum fiber wool. The arrangement of the metal sound-absorbing panel, glass fiber wool and petroleum fiber wool can all play a role in sound reduction. One end of the two sets of limit rods 22 are rotatably connected to the rotating rod 23 through a bearing, and one end of the rotating rod 23 is installed with a fixing block 24, and the side surface of the fixing block 24 is provided with a fixing hole 25. The outer diameter of the fixing rod 14 is adapted to the inner diameter of the fixing hole 25, and one end of the fixing rod 14 passes through the fixing hole 25 and penetrates the interior of the fixing block 24.

[0022] During use, when the parts inside the shell 1 are damaged, the user can move the mounting plate 16 to one side through a set of hand-held rods 17, so that the two sets of springs 18 can be extended and retracted to one side, so that the fixing rod 14 can be moved to one side, so that one end of the fixing rod 14 can be moved out from the inside of the ball 15. After that, the fixing block 24 and the rotating rod 23 can be rotated, so that the ball 15 can fit on the outer surface of the fixing block 24. Similarly, the other three sets of fixing rods 14 can be operated in the same way, so that the corresponding fixing rods 14 can be moved out from the inside of the corresponding fixing holes 25 respectively, and fit with the side surfaces of the corresponding fixing blocks 24. At this time, the sound-absorbing sponge board 2 can be removed from the inside of the shell 1, so that the sound-absorbing sponge board 2 and the parts installed on the sound-absorbing sponge board 2 can be repaired accordingly. After the repair is completed, the sound-absorbing sponge board 2 can be reinstalled into the inside of the shell 1 according to the above operation, and the reverse operation can be performed.

[0023] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An assembled rectangular muffler, comprising a housing (1), characterized in that: The top inner wall and the bottom inner wall of the shell (1) are provided with a limit groove (11) at the middle position, and the two sides of the shell (1) are provided with a mounting plate (12) at the position close to the limit groove (11), the inside of the mounting plate (12) is provided with a through hole (13), and the inside of the through hole (13) is provided with a fixing rod (14) movably, one end of the fixing rod (14) is rotatably connected with a ball (15), and the other end of the fixing rod (14) is provided with a mounting plate (16), the outer side of the mounting plate (16) is provided with a hand-held rod (17), and the mounting plate (1 6), springs (18) are installed at the positions of the inner sides close to both ends of the two groups of limit grooves (11), limit rods (22) are slidably arranged inside the two groups of limit grooves (11), and the inner sides of the two groups of limit rods (22) are installed with one side of the sound-absorbing sponge board (2), and the inner sides of the two groups of sound-absorbing sponge boards (2) are installed with one end of the silencer (21), one end of the two groups of limit rods (22) is rotatably connected with a rotating rod (23) through a bearing, and one end of the rotating rod (23) is installed with a fixing block (24), and the side surface of the fixing block (24) is provided with a fixing hole (25).

2. The assembled rectangular muffler according to claim 1, characterized in that: One end of the fixing rod (14) passes through the interior of the mounting plate (12) through the through hole (13).

3. The assembled rectangular muffler according to claim 1 is characterized in that: One end of the spring (18) is mounted on a side surface of the mounting plate (12).

4. The assembled rectangular muffler according to claim 1, characterized in that: The outer diameter of the fixing rod (14) is matched to the inner diameter of the fixing hole (25), and one end of the fixing rod (14) passes through the fixing hole (25) and penetrates the interior of the fixing block (24).

5. The assembled rectangular muffler according to claim 1, characterized in that: The two groups of sound-absorbing sponge panels (2) are of equal size, and the size of the outer frames of the two groups of sound-absorbing sponge panels (2) is compatible with the size of the inner frame of the housing (1).

6. The assembled rectangular muffler according to claim 1, characterized in that: The lengths of the two groups of limiting rods (22) are matched with the lengths of the limiting grooves (11).

Images