Honeycomb type silencer

Abstract

The utility model discloses a honeycomb type silencer in the technical field of silencers, which comprises an outer shell, an inner shell is arranged in the outer shell, a locking component is arranged between the outer shell and the inner shell, a plurality of glass fiber acoustic panels are connected in the inner shell, flow guide pipes are arranged on the plurality of glass fiber acoustic panels, and the flow guide pipes are connected with the inner shell. The multiple flow guide pipes are distributed in the inner shell in an up-down staggered mode. According to the utility model, through the mutual cooperation of the plurality of flow guide pipes and the glass fiber sound-absorbing plate and the arrangement of the sound-eliminating channels in the flow guide pipes, the honeycomb-shaped sound-eliminating channels are utilized, so that the sectional area of each sound-eliminating channel is small, more high-frequency sound waves can be contacted with the inner sides of the flow guide pipes, the sound absorption is increased, and the sound-eliminating function is realized; and meanwhile, the staggered arrangement of the flow guide pipes can prolong the passing time of sound in the inner shell, and the silencing effect is further improved.

Description

Technical Field

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

[0002] A muffler refers to a noise reduction device such as a pipe with a sound-absorbing lining, an elbow, or a pipe with a sudden change in cross-sectional area and other acoustic impedance discontinuities for an air flow pipe with noise propagation, so that the noise in the pipe can be attenuated or reflected back. The former is called a resistive muffler, the latter is called a reactive muffler, and there is also impedance composite muffling.

[0003] At present, some mufflers on the market directly use sound-absorbing cotton or sound-insulating pads inside to absorb or block noise. Due to the empty interior of the muffler, the air flow directly flows out from its interior with a relatively fast flow rate, resulting in insufficient time for the sound-absorbing cotton and sound-insulating pads to absorb and block the noise, leading to a general muffling effect and being not conducive to use. Based on this, we propose a honeycomb muffler. Summary of the Utility Model

[0004] In order to improve the problem that the existing muffler directly uses sound-absorbing cotton or sound-insulating pads inside to absorb or block noise. Due to the empty interior of the muffler, the air flow directly flows out from its interior with a relatively fast flow rate, resulting in a general muffling effect, the utility model provides a honeycomb muffler.

[0005] The utility model provides a honeycomb muffler, adopting the following technical scheme:

[0006] A honeycomb muffler includes a housing, an inner housing is installed inside the housing, a locking assembly is arranged between the housing and the inner housing, several fiberglass sound-absorbing plates are connected inside the inner housing, and several flow guide pipes are installed on the several fiberglass sound-absorbing plates. The several flow guide pipes are distributed up and down in a staggered manner inside the inner housing.

[0007] By adopting the above technical scheme, through the arrangement of several flow guide pipes, noise can be effectively reduced, and the staggered arrangement of the flow guide pipes can prolong the time for sound to pass through the inner housing, further improving the muffling effect of the muffler. At the same time, through the arrangement of the locking assembly, it is convenient to take out the inner housing from inside the housing for maintenance or replacement.

[0008] Optionally, both ends of the several flow guide pipes extend out of the fiberglass sound-absorbing plates, and several sound absorption channels are arranged inside the flow guide pipes. A honeycomb structure is formed between the several sound absorption channels.

[0009] By adopting the above technical solution and utilizing honeycomb-shaped silencer channels, the cross-sectional area of ​​each silencer channel is reduced, and high-frequency sound waves can come into contact with the inner side of the guide tube more, thereby increasing sound absorption and achieving the silencer function.

[0010] Optionally, connecting plates are connected to the corners on both sides of the shell, and a positioning hole is opened in the middle of the connecting plates.

[0011] By adopting the above technical solution, the outer shell is installed and positioned through the positioning holes and connecting bolts on the connecting plate, so that the entire muffler can be fixed and installed conveniently.

[0012] Optionally, a baffle is symmetrically connected to the right end of the interior of the shell.

[0013] By adopting the above technical solution, the position of the inner shell inside the outer shell can be limited.

[0014] Optionally, the locking assembly includes a frame, which is installed on the top of the shell, and a plurality of return springs are connected to the inner top wall of the frame, a movable plate is installed at the bottom of the plurality of return springs, a plurality of plug rods are connected to the bottom of the movable plate, and a slot matching the plug rod is opened on the top of the fiberglass sound-absorbing panel.

[0015] By adopting the above technical solution, when the inner shell needs to be taken out, the movable plate is pulled up, the movable plate compresses the return spring and drives the insertion rod to move upward until the insertion rod is separated from the slot, and the inner shell is pulled to the left to be taken out from the inside of the outer shell.

[0016] Optionally, both sides of the movable plate are connected with pull rods, and ends of two groups of pull rods facing away from the movable plate extend out of the frame, and both sides of the frame are provided with reserved holes.

[0017] By adopting the above technical solution, when the movable plate needs to be pulled to move, it is convenient for the staff to hold the pull rod and pull it upwards, so that the movable plate can be driven to move upwards through the pull rod.

[0018] In summary, the present invention has at least one of the following beneficial effects:

[0019] Through the cooperation of several guide tubes and glass fiber sound-absorbing panels, a sound-absorbing channel is set inside the guide tube, and the honeycomb sound-absorbing channel is used to make the cross-sectional area of ​​each sound-absorbing channel small, so that high-frequency sound waves can contact the inner side of the guide tube more, increase sound absorption, and achieve the sound-absorbing function. At the same time, the staggered setting of the guide tube can prolong the time for sound to pass through the inner shell, further improving the sound-absorbing effect.

[0020] Through the cooperative setting of the frame body, the reset spring, the movable plate, the insertion rod and the insertion slot, the inner shell can be conveniently taken out from the inside of the outer shell for maintenance or replacement, which improves the practicability of the muffler. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0022] Figure 1 is a schematic cross-sectional structure diagram of the present invention;

[0023] Figure 2 is of the present invention Figure 1 schematic diagram of the structure at A in;

[0024] Figure 3 is a schematic left-view structure diagram of the present invention.

[0025] In the figure: 1, connecting plate; 2, positioning hole; 3, outer shell; 4, guide pipe; 5, fiberglass sound-absorbing board; 6, inner shell; 7, baffle; 8, locking assembly; 801, frame body; 802, reset spring; 803, movable plate; 804, insertion rod; 805, insertion slot; 9, reserved hole; 10, pull rod; 11, sound-absorbing channel. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The following will Figures 1 - 3 further describe the present invention in detail.

[0027] Please refer to the accompanying drawings in the specification Figure 1 and Figure 3 , an embodiment provided by the present invention: a honeycomb muffler, including an outer shell 3, an inner shell 6 is installed inside the outer shell 3, connecting plates 1 are fixedly connected to the corners on both sides of the outer shell 3, and positioning holes 2 are opened in the middle of the connecting plates 1. The outer shell 3 is installed and positioned by connecting bolts through the positioning holes 2 on the connecting plates 1, which is convenient for fixedly installing the entire muffler. Baffles 7 are symmetrically and fixedly connected to the right end inside the outer shell 3. Thereby, the position of the inner shell 6 inside the outer shell 3 can be limited.

[0028] Please refer to the accompanying drawings in the specification Figure 1 and Figure 2A locking assembly 8 is provided between the outer shell 3 and the inner shell 6. The locking assembly 8 includes a frame 801, which is fixedly mounted on the top of the outer shell 3. A plurality of return springs 802 are connected to the inner top wall of the frame 801. A movable plate 803 is installed at the bottom of the plurality of return springs 802. The movable plate 803 is slidably connected to the frame 801. A plurality of insertion rods 804 are fixedly connected to the bottom of the movable plate 803. A slot 805 matching the insertion rod 804 is provided at the top of the glass fiber sound absorbing board 5. When the inner shell 6 needs to be taken out, the movable plate 803 is pulled up, and the movable plate 803 compresses the return spring 802 and drives the insertion rod 804 to move upward until the insertion rod 804 is separated from the slot 805. The inner shell 6 is pulled to the left, and the inner shell 6 can be taken out from the inside of the outer shell 3.

[0029] Please refer to the attached figure in the instruction manual Figure 1 and Figure 2 Both sides of the movable plate 803 are fixedly connected with pull rods 10, and the ends of the two sets of pull rods 10 away from the movable plate 803 are extended out of the frame 801, and both sides of the frame 801 are provided with reserved holes 9. When the movable plate 803 needs to be pulled to move, it is convenient for the staff to hold the pull rods 10 and pull upwards, and then the movable plate 803 can be driven to move upwards through the pull rods 10.

[0030] Please refer to the attached figure in the instruction manual Figure 1 and Figure 3 , several glass fiber sound absorbing panels 5 are connected to the interior of the inner shell 6, and several glass fiber sound absorbing panels 5 are installed with guide pipes 4, and several guide pipes 4 are distributed inside the inner shell 6 in an up-down dislocation, and both ends of several guide pipes 4 extend out of the glass fiber sound absorbing panels 5, and several muffler channels 11 are arranged inside the guide pipe 4, and a honeycomb structure is formed between the several muffler channels 11. The honeycomb muffler channels 11 are used to make the cross-sectional area of ​​each muffler channel 11 small, so that high-frequency sound waves can contact more with the inner side of the guide pipe 4, increase sound absorption, and achieve the muffler function.

[0031] Working principle: When in use, the outer shell 3 is installed and positioned through the positioning holes 2 connecting bolts on the connecting plate 1. The arrangement of several guide tubes 4 can effectively reduce noise, and a silencer channel 11 is arranged inside the guide tube 4. Several silencer channels 11 together form a honeycomb structure, so that the cross-sectional area of ​​each silencer channel 11 is small, and high-frequency sound waves can contact the inner side of the guide tube 4 more, thereby increasing sound absorption and improving the silencer effect. At the same time, the staggered arrangement of the guide tube 4 can prolong the time for sound to pass through the inner shell 6, further improving the silencer effect of the silencer.

[0032] When the sound absorption effect of the glass fiber sound absorption board 5 decreases, the staff pulls up the pull rod 10, and the pull rod 10 drives the movable plate 803 to move upward to compress the return spring 802. The upward movement of the movable plate 803 drives the insertion rod 804 to move upward until the insertion rod 804 is separated from the slot 805. At this time, pull the inner shell 6 to the left, take out the inner shell 6 from the inside of the outer shell 3 and perform maintenance or replacement, which improves the practicability of the muffler.

[0033] The above are all the preferred embodiments of the present invention, and the protection scope of the present invention is not limited by this. Therefore, all equivalent changes made according to the structure, shape and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. A honeycomb muffler, comprising a housing (3), characterized in that: An inner shell (6) is installed inside the outer shell (3), a locking assembly (8) is arranged between the outer shell (3) and the inner shell (6), a plurality of glass fiber sound absorbing panels (5) are connected inside the inner shell (6), a plurality of glass fiber sound absorbing panels (5) are installed with flow guide pipes (4), and the plurality of flow guide pipes (4) are distributed inside the inner shell (6) in an up-and-down staggered manner.

2. A honeycomb muffler according to claim 1, characterized in that: Glass fiber sound absorbing panels (5) extend from both ends of the plurality of flow guide pipes (4), a plurality of sound-absorbing channels (11) are arranged inside the flow guide pipes (4), and a honeycomb structure is formed between the plurality of sound-absorbing channels (11).

3. A honeycomb muffler according to claim 1, characterized in that: Connecting plates (1) are connected to the corners on both sides of the shell (3), and a positioning hole (2) is provided in the middle of the connecting plate (1).

4. A honeycomb muffler according to claim 1, characterized in that: A baffle (7) is symmetrically connected to the right end of the interior of the shell (3).

5. The honeycomb muffler according to claim 1, characterized in that: The locking assembly (8) comprises a frame (801), the frame (801) being mounted on the top of the housing (3), the inner top wall of the frame (801) being connected to a plurality of return springs (802), a movable plate (803) being mounted at the bottom of the plurality of return springs (802), a plurality of insertion rods (804) being connected at the bottom of the movable plate (803), and a slot (805) matching the insertion rod (804) being provided at the top of the glass fiber sound absorbing board (5).

6. A honeycomb muffler according to claim 5, characterized in that: Both sides of the movable plate (803) are connected with pull rods (10), and the ends of the two groups of pull rods (10) facing away from the movable plate (803) extend out of the frame (801), and both sides of the frame (801) are provided with reserved holes (9).

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