Folded plate type silencer

Abstract

The utility model belongs to the field of folded plate type silencers, particularly relates to a folded plate type silencer, and aims to solve the problems that although a silencer shell can be installed through a fixing hole in a fixing support in the prior art in use, if an installation hole in an installation surface and the fixing hole in the fixing support are located on the same horizontal line in the installation process, the silencer shell cannot be installed. In order to solve the problems that in the prior art, when fixing holes in a fixing support cannot be aligned with mounting holes in a mounting surface, adjustment is inconvenient, holes need to be re-punched in the mounting surface, and the operation is troublesome, the following scheme is provided that the air duct fixing device comprises a shell, and flange plates facilitating connection of external air ducts are welded to the two ends of the shell; a mounting frame is arranged at the top of the shell, a connecting plate is welded to the top of the mounting frame, the distance and the position between the two mounting plates can be adjusted through an adjusting mechanism according to actual needs, it is ensured that fixing holes are aligned with mounting holes of a mounting surface, mounting is facilitated, and the frame body can be fixed through a fixing mechanism; and sliding out of the slot is avoided.

Description

Technical Field

[0001] This utility model relates to the field of folded plate silencers, and in particular to a folded plate silencer. Background Technology

[0002] A silencer is a device that allows airflow while blocking or reducing the propagation of sound. It is an important measure to eliminate aerodynamic noise. Silencers can block the propagation of sound waves while allowing airflow, making them an effective tool for noise control.

[0003] A search revealed that patent CN 211150093U discloses a folding plate silencer, but this folding plate silencer has the following shortcomings in use:

[0004] Although the muffler housing can be installed through the mounting holes on the mounting bracket, it is inconvenient to adjust if the mounting holes on the mounting surface and the mounting holes on the mounting bracket are on the same horizontal line, but the mounting holes on the mounting bracket cannot be aligned with the mounting holes on the mounting surface. It is also troublesome to re-drill holes on the mounting surface. Utility Model Content

[0005] The purpose of this utility model is to solve the problem that in the existing technology, although the muffler housing can be installed through the fixing holes on the fixing bracket, if it is found that the mounting holes on the mounting surface and the fixing holes on the fixing bracket are on the same horizontal line, but the fixing holes on the fixing bracket cannot be aligned with the mounting holes on the mounting surface, it is inconvenient to adjust and requires re-drilling holes on the mounting surface, which is quite troublesome. Therefore, a folding plate type muffler is proposed.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A folding plate silencer includes a housing. Flanges for connecting to external ducts are welded to both ends of the housing. A mounting bracket is provided on the top of the housing, and a connecting plate is welded to the top of the mounting bracket. The connecting plate and the mounting bracket are an integral structure. A T-slot is formed on the top of the connecting plate. Two T-blocks are slidably connected to the inner wall of the T-slot. Mounting plates are welded to the opposite sides of the two T-blocks. The mounting plates and the T-blocks are an integral structure. Fixing holes for easy installation are provided on the mounting plate. Multiple first silencer housings are fixedly installed on the inner wall of the housing. A slot is provided on the housing, into which a frame is inserted. The frame is U-shaped, and a groove is formed on one side of the frame. A filter screen for filtering and intercepting dust is provided in the groove. A handle for pulling out the frame is fixedly provided on one side of the frame. The first silencer housings are folding plate shaped.

[0008] An adjustment mechanism is provided on the connecting plate to adjust the fixing holes on the two mounting plates to facilitate alignment with the mounting holes on the mounting surface.

[0009] The fixing mechanism is located on the handle and is used to fix the frame and prevent the frame from sliding out of the slot.

[0010] In one possible design, the adjusting mechanism includes two fixed plates, two first threaded rods, and two movable blocks. One side of each of the two fixed plates is welded to one side of a connecting plate. A bearing is embedded in one side of each fixed plate. The outer side of each first threaded rod is fixedly connected to the inner wall of the inner ring of the bearing. A reinforcing plate is welded to one side of the connecting plate. The ends of the two first threaded rods that are close to each other are rotatably connected to the two sides of the reinforcing plate. Two movable holes are provided on one side of the connecting plate to facilitate the movement of the two movable blocks. The two movable blocks are located in the two movable holes respectively. One side of each movable block is welded to one side of a T-shaped block. A first threaded hole is provided on each movable block. The first threaded rod is threadedly connected to the first threaded hole. A first knob is welded to the other end of the first threaded rod to facilitate its rotation.

[0011] In one possible design, the fixing mechanism includes a short plate and a second threaded rod. One side of the short plate is welded to one side of the handle. A second through hole is provided on the short plate. A second threaded hole is provided on one side of the housing. One end of the second threaded rod passes through the second through hole and is threadedly connected to the second threaded hole. A second knob is fixedly provided at the other end of the second threaded rod to facilitate the rotation of the second threaded rod.

[0012] In one possible design, a plurality of second silencing shells for secondary noise reduction are fixedly provided on the inner wall of one end of the outer shell. Both the first and second silencing shells are hollow structures. The interior of the first and second silencing shells is filled with sound-absorbing material. Both the first and second silencing shells are provided with a plurality of flow holes.

[0013] In one possible design, the mounting bracket has first through holes at each of the four bottom corners, and bolts for fixing the mounting bracket are inserted through the first through holes. The top of the housing has four third threaded holes, and the bolts are threaded into the third threaded holes.

[0014] In one possible design, the filter screen is fixed to a groove in the frame by screws.

[0015] In one possible design, the sound-absorbing material is made of aerogel.

[0016] In this application, during use, the filter screen is fixed in the groove of the frame (the groove has a threaded hole) by screws. Then, the frame is inserted into the slot of the outer shell. Subsequently, the second knob is rotated, which drives the second threaded rod to rotate, so that the second threaded rod and the second threaded hole of the outer shell are threadedly connected. This allows the second knob to fit against one side of the short plate, thereby fixing the frame and preventing it from slipping out of the slot. When the mounting hole on the mounting surface and the fixing hole on the mounting plate are on the same horizontal line, but the fixing hole is not aligned with the mounting hole on the mounting surface, the first knob is rotated to drive the first threaded rod to rotate. Since the first threaded rod is threaded with the first threaded hole on the moving block... The connection is threaded, so when the first threaded rod rotates, the moving block moves along the moving hole on the connecting plate. The movement of the moving block drives the movement of the T-block and the mounting plate, thus adjusting the distance and position between the two mounting plates according to actual needs. This ensures that the fixing hole is aligned with the mounting hole on the mounting surface for easy installation. After the fixing hole on the mounting plate is aligned with the mounting hole on the mounting surface, the mounting plate is fixed to the mounting surface using screws or other fasteners. Subsequently, the flanges at both ends of the folding plate silencer housing are connected to the external air duct. During use, airflow enters the first and second silencer housings inside the housing, which... The sound-absorbing shells are all hollow and filled with sound-absorbing materials (such as aerogel: aerogel is a nanoscale porous solid material formed by replacing the liquid phase in the gel with gas through a sol-gel method and a certain drying method. The interior of the aerogel is filled with nanopores that are open at both ends and the same as the surface. When sound propagates in it, the sound energy is consumed by the numerous pore walls, making the aerogel have a sound absorption effect tens of times higher than ordinary porous materials. It has good sound absorption performance, stable acoustic performance, and will not shed debris to contaminate the ventilation ducts). Through the dual sound absorption of the first and second sound-absorbing shells, the overall sound absorption effect is effectively improved. The first and second sound-absorbing shells can be made of metal, and the specific material can be selected according to actual needs. When airflow passes through these sound-absorbing shells, the sound-absorbing material will absorb the energy of the sound waves, thereby achieving the sound-absorbing effect. Of course, the sound-absorbing material can also be rock wool or glass wool, and the specific material can be selected according to actual needs. When the airflow passes through the filter screen inside the frame, the filter screen will filter and intercept the dust and impurities in the airflow to ensure the cleanliness of the airflow. Since the filter screen is installed with screws, it is easy to disassemble and replace. The shell can be hoisted by the mounting bracket, connecting bracket and mounting plate. When hoisting is not required, the mounting bracket can be removed.

[0017] The beneficial effects of this utility model are as follows:

[0018] In this utility model, the folding plate silencer uses an adjustment mechanism to drive the first threaded rod to rotate by rotating the first knob. Since the first threaded rod is threadedly connected to the first threaded hole on the moving block, when the first threaded rod rotates, the moving block will move along the moving hole on the connecting plate. The movement of the moving block drives the movement of the T-block and the mounting plate, thereby adjusting the distance and position between the two mounting plates according to actual needs, ensuring that the fixing hole is aligned with the mounting hole on the mounting surface for easy installation.

[0019] In this utility model, the folding plate silencer uses a fixing mechanism to insert the frame into the slot of the outer shell. Then, the second knob is rotated, which drives the rotation of the second threaded rod, making the second threaded rod and the second threaded hole of the outer shell threaded together. This allows the second knob to fit against one side of the short plate, thereby fixing the frame and preventing it from sliding out of the slot.

[0020] In this utility model, the distance and position between the two mounting plates can be adjusted according to actual needs through the adjustment mechanism to ensure that the fixing hole is aligned with the mounting hole on the mounting surface for easy installation. If re-drilling is required, it will be more convenient. The fixing mechanism can fix the frame and prevent it from sliding out of the slot. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the main structure of a folding plate silencer proposed in this utility model.

[0022] Figure 2 This is a side view of the structure of a folding plate silencer proposed in this utility model;

[0023] Figure 3 This is a schematic diagram of the adjustment mechanism of a folding plate silencer proposed in this utility model;

[0024] Figure 4 This is a side view of the unmounted mounting bracket of a folding plate silencer proposed in this utility model;

[0025] Figure 5 This is a partial structural schematic diagram of a folding plate silencer proposed in this utility model.

[0026] Figure 6 This is a cross-sectional view of the first and second silencing housings of a folding plate silencer proposed in this utility model.

[0027] In the diagram: 1. Outer shell; 2. Flange; 3. Mounting bracket; 4. Connecting plate; 5. Sound-absorbing material; 6. Mounting plate; 7. First silencing shell; 8. Frame; 9. Second silencing shell; 10. Handle; 11. Short plate; 12. Bolt; 13. Fixing hole; 14. Fixing plate; 15. First threaded rod; 16. Reinforcing plate; 17. Moving block; 18. T-slot; 19. Filter screen; 20. Second threaded rod; 21. Slot. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0029] Example 1

[0030] Reference Figure 1-6 A folded plate silencer, applicable in the field of folded plate silencers, includes: a housing 1, with flanges 2 welded to both ends of the housing 1 for easy connection to external ducts, facilitating the connection between the silencer and external pipes. A mounting bracket 3 is provided on the top of the housing 1, and a connecting plate 4 is welded to the top of the mounting bracket 3. The connecting plate 4 and the mounting bracket 3 are an integral structure, ensuring structural stability and robustness. A T-slot 18 is formed on the top of the connecting plate 4, and two T-blocks are slidably connected to the inner wall of the T-slot 18. Mounting plates 6 are welded to the opposite sides of the two T-blocks, and the mounting plates 6 and the T-blocks are an integral structure. Fixing holes 13 are provided on the mounting plate 6 for easy installation, allowing the silencer to be fixed to the mounting surface. Multiple first silencing shells 7 are fixedly installed on the inner wall of the housing 1. The first silencing shells 7 are folded plate shaped, forming silencing channels that reflect and absorb sound waves multiple times, thereby improving the silencing effect. The outer casing 1 has a slot 21 into which a frame 8 is inserted. The frame 8 is U-shaped for easy installation and disassembly. A groove is provided on one side of the frame 8, and a filter screen 19 is installed within the groove to filter and intercept dust, preventing dust from entering the muffler and affecting its noise reduction effect. A handle 10 is fixedly provided on one side of the frame 8 for easy pulling out, facilitating cleaning and replacement of the filter screen 19.

[0031] An adjustment mechanism is mounted on the connecting plate 4 to adjust the fixing holes 13 on the two mounting plates 6, facilitating alignment with the mounting holes on the mounting surface. The adjustment mechanism includes two fixing plates 14, two first threaded rods 15, and two moving blocks 17. One side of each of the two fixing plates 14 is welded to one side of the connecting plate 4. A bearing is embedded in one side of each fixing plate 14, and the outer side of each first threaded rod 15 is fixedly connected to the inner wall of the bearing's inner ring. A reinforcing plate 16 is welded to one side of the connecting plate 4. The ends of the two first threaded rods 15, which are close to each other, are rotatably connected to the two sides of the reinforcing plate 16, improving the stability and durability of the structure.

[0032] One side of the connecting plate 4 has two moving holes to facilitate the movement of two moving blocks 17, with each moving block 17 located within one of the two moving holes. One side of each moving block 17 is welded to one side of the T-shaped block, and a first threaded hole is provided on the moving block 17. A first threaded rod 15 is threadedly connected to the first threaded hole. By rotating the first threaded rod 15, the moving block 17 can be moved within the moving hole, thereby moving the T-shaped block and the mounting plate 6 within the T-slot 18, thus adjusting the position of the fixed hole 13. A first knob is welded to the other end of the first threaded rod 15 to facilitate its rotation and operation.

[0033] A fixing mechanism is provided on the handle 10 to secure the frame 8 and prevent it from sliding out of the slot 21. The fixing mechanism includes a short plate 11 and a second threaded rod 20. One side of the short plate 11 is welded to one side of the handle 10, and a second through hole is provided on the short plate 11. A second threaded hole is provided on one side of the outer casing 1, and one end of the second threaded rod 20 passes through the second through hole and is threadedly connected to the second threaded hole. By rotating the second threaded rod 20, the frame 8 can be fixed in the slot 21 to prevent it from sliding. A second knob is fixedly provided at the other end of the second threaded rod 20 to facilitate its rotation for easy operation.

[0034] Example 2

[0035] refer to Figure 1-6 Improvements based on Example 1:

[0036] Multiple second silencing shells 9 for secondary silencing are fixedly installed on the inner wall of one end of the outer shell 1. Both the first silencing shell 7 and the second silencing shell 9 are hollow structures filled with sound-absorbing material 5. The sound-absorbing material 5 is made of aerogel, which has excellent sound absorption and high-temperature resistance, effectively improving the silencing effect and service life of the silencer. Multiple flow holes are provided on both the first silencing shell 7 and the second silencing shell 9 to facilitate the transmission and silencing of sound waves.

[0037] The mounting bracket 3 has four first through holes at its bottom corners, and bolts 12 for fixing the mounting bracket 3 are inserted into the first through holes. The top of the outer shell 1 has four third threaded holes, and the bolts 12 are threaded into the third threaded holes. By tightening the bolts 12, the mounting bracket 3 and the outer shell 1 can be fixed to the mounting surface.

[0038] The filter screen 19 is fixed to the groove of the frame 8 with screws, making it easy to disassemble and replace. When the filter screen 19 is clogged or damaged, the screws can be unscrewed to remove the filter screen 19 for cleaning or replacement. The filter screen 19 can be made of HEPA filter, and the specific material can be selected according to actual needs.

[0039] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A folding plate type silencer, comprising a housing (1), characterized in that, Both ends of the outer shell (1) are welded with flanges (2) for easy connection to external air ducts. The top of the outer shell (1) is provided with a mounting bracket (3). A connecting plate (4) is welded to the top of the mounting bracket (3). The connecting plate (4) and the mounting bracket (3) are an integral structure. A T-slot (18) is opened on the top of the connecting plate (4). Two T-blocks are slidably connected to the inner wall of the T-slot (18). A mounting plate (6) is welded to the side of the two T-blocks that are far apart from each other. The mounting plate (6) and the T-blocks are an integral structure. (6) A fixing hole (13) is provided on the upper part for easy installation. Multiple first silencing shells (7) are fixedly provided on the inner wall of the outer shell (1). A slot (21) is provided on the outer shell (1). A frame (8) is inserted into the slot (21). The frame (8) is mouth-shaped. A groove is provided on one side of the frame (8). A filter screen (19) for filtering and intercepting dust is provided in the groove. A handle (10) is fixedly provided on one side of the frame (8) for easy pulling out of the frame (8). The first silencing shell (7) is folded plate-shaped. An adjustment mechanism is provided on the connecting plate (4) to adjust the fixing holes (13) on the two mounting plates (6) so as to align them with the mounting holes on the mounting surface; A fixing mechanism is provided on the handle (10) to fix the frame (8) and prevent the frame (8) from sliding out of the slot (21).

2. The folding plate silencer according to claim 1, characterized in that, The adjustment mechanism includes two fixed plates (14), two first threaded rods (15), and two moving blocks (17). One side of each of the two fixed plates (14) is welded to one side of the connecting plate (4). A bearing is embedded in one side of the fixed plate (14). The outer side of the first threaded rod (15) is fixedly connected to the inner wall of the inner ring of the bearing. A reinforcing plate (16) is welded to one side of the connecting plate (4). The ends of the two first threaded rods (15) that are close to each other are rotatably connected to the two sides of the reinforcing plate (16). Two moving holes are provided on one side of the connecting plate (4) to facilitate the movement of the two moving blocks (17). The two moving blocks (17) are located in the two moving holes respectively. One side of the moving block (17) is welded to one side of the T-shaped block. A first threaded hole is provided on the moving block (17). The first threaded rod (15) is threadedly connected to the first threaded hole. A first knob is welded to the other end of the first threaded rod (15) to facilitate the rotation of the first threaded rod (15).

3. A folding plate silencer according to claim 1, characterized in that, The fixing mechanism includes a short plate (11) and a second threaded rod (20). One side of the short plate (11) is welded to one side of the handle (10). A second through hole is provided on the short plate (11). A second threaded hole is provided on one side of the outer shell (1). One end of the second threaded rod (20) passes through the second through hole and is threadedly connected to the second threaded hole. A second knob is fixedly provided at the other end of the second threaded rod (20) to facilitate the rotation of the second threaded rod (20).

4. A folding plate silencer according to claim 1, characterized in that, The inner wall of one end of the outer shell (1) is fixedly provided with a plurality of second silencing shells (9) for secondary silencing. Both the first silencing shell (7) and the second silencing shell (9) are hollow structures. The interior of the first silencing shell (7) and the interior of the second silencing shell (9) are filled with sound-absorbing material (5). Both the first silencing shell (7) and the second silencing shell (9) are provided with a plurality of flow holes.

5. A folding plate silencer according to claim 1, characterized in that, The mounting bracket (3) has a first through hole at each of its four bottom corners. A bolt (12) for fixing the mounting bracket (3) is inserted in the first through hole. The top of the outer shell (1) has four third threaded holes. The bolt (12) is threadedly connected to the third threaded holes.

6. A folding plate silencer according to claim 1, characterized in that, The filter screen (19) is fixed to the groove of the frame (8) by screws.

7. A folding plate silencer according to claim 4, characterized in that, The sound-absorbing material (5) is made of aerogel.

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