Device facilitating replacement of sound insulation material in silencer

Abstract

The utility model belongs to the technical field of replacement of sound insulation materials in silencers, and discloses a device facilitating replacement of sound insulation materials in silencers, which comprises a hush pipe, an upper cover is sleeved at the top end of the hush pipe, a sound insulation plate is slidably arranged in the upper cover, and two ends of the sound insulation plate further comprise quick-change components. The quick-change assembly comprises a limiting frame arranged on the outer side of the sound insulation plate in a sliding mode, the limiting frame and the silencing pipe are rotationally arranged, a pressing plate abuts against the interior of the limiting frame, a rotating shaft is rotationally arranged at the top end of the pressing plate, the rotating shaft and the silencing pipe are fixedly arranged, and a fastening screw penetrates through the interior of the pressing plate. The fastening screw penetrates through the limiting frame and is spirally arranged with the silencing pipe, through cooperation of the limiting frame and the pressing plate structure in the quick-change assembly, the sound insulation plate is directly inserted into the limiting frame, the pressing plate structure is rotationally pressed, the limiting frame is positioned on the inner wall of the silencer, and positioning operation is completed after the sound insulation plate is directly inserted into the limiting frame; and a silencing material structure in the silencer is simple to replace.

Description

Technical Field

[0001] The utility model belongs to the technical field of replacing sound insulation materials inside a muffler, in particular to a device which is convenient for replacing sound insulation materials inside a muffler. Background Art

[0002] A silencer is a noise reduction device that can be used to reduce noise in airflow pipes that transmit noise, such as pipes and elbows with sound-absorbing linings or pipes with sudden changes in cross-sectional area and other discontinuous acoustic impedance, to attenuate or reflect the noise in the pipe. The former is called a resistive silencer, the latter is called a reactive silencer, and there are also impedance composite silencers.

[0003] At the same time, the screw air compressor muffler with application number CN202321018177.5 "includes a muffler body, an arc-shaped groove is arranged at the upper end of the outer side of the muffler body, an arc-shaped strip is movably connected inside the arc-shaped groove, an inner cavity is arranged inside the muffler body, a limiting cylinder is inserted inside the inner cavity, and limiting protrusions are arranged on both sides of the rear end of the limiting cylinder. It can be achieved by arranging a limiting cylinder inside the muffler body, a sealing cover is arranged at the front end of the limiting cylinder, limiting protrusions are arranged on both sides of the rear end of the limiting cylinder, a magnetic block is arranged inside the limiting protrusion, and an arc-shaped strip of magnetic material is slidably connected to the outer side of the muffler body";

[0004] During use, the existing silencer has an internal silencer structure that is directly fixed inside the silencer to maintain positioning stability, which makes disassembly and cleaning operations more complicated. The subsequent connection will cause a gap in the assembly between the silencer material and the silencer, making replacement more cumbersome and complicated, and it cannot be adjusted or replaced directly inside the silencer.

[0005] Therefore, in order to solve the above problems, a device is proposed for facilitating the replacement of the sound insulation material inside the muffler. Utility Model Content

[0006] In order to solve the problems raised in the above background technology, the utility model provides a device for facilitating the replacement of sound insulation materials inside a muffler, which has the advantage of being able to directly replace the sound insulation materials inside the muffler.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a device for facilitating the replacement of sound insulation materials inside a muffler, comprising a muffler pipe, a top cover is sleeved on the top of the muffler pipe, a sound insulation board is slidably arranged inside the top cover, and quick-change components are also provided at both ends of the sound insulation board;

[0008] The quick-change assembly includes a limit frame slidably arranged on the outside of the sound insulation board, and the limit frame and the silencer pipe are rotatably arranged, a pressure plate is tightly arranged inside the limit frame, a rotating shaft is rotatably arranged on the top of the pressure plate, and the rotating shaft and the silencer pipe are fixedly arranged, a fastening screw passes through the inside of the pressure plate, and the fastening screw passes through the limit frame and is spirally arranged with the silencer pipe.

[0009] Preferably, a spring is fixedly provided on the outer side of the pressure plate, and the other end of the spring is pressed against the inner wall of the silencer pipe.

[0010] Preferably, the sound insulation board is divided into two halves, and both ends of the sound insulation board are provided with T-shaped slots that fit into the slots of the limiting frame.

[0011] Preferably, a plug plate is fitted on the top of the sound insulation board, and the plug plate is slidably arranged with the limit frame, and a horizontal axis is fixedly arranged on the outer side of the plug plate.

[0012] Preferably, a positioning frame is slidably provided on the outer side of the horizontal axis, a positioning rod penetrates the interior of the positioning frame, and the positioning rod is tightly pressed against the sound insulation board.

[0013] Preferably, a fastening nut is fitted on the outer side of the positioning frame, and the fastening nut is spirally arranged with the transverse axis.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0015] 1. The utility model cooperates with the limit frame and the pressure plate structure in the quick-change assembly to directly insert the sound insulation board into the interior of the limit frame, rotate and tighten the pressure plate structure, position the limit frame on the inner wall of the muffler, and directly insert the sound insulation board into the interior of the limit frame to complete the positioning operation, so that the sound-absorbing material structure inside the muffler can be easily replaced.

[0016] 2. The utility model can insert the horizontal axis into the interior of the muffler pipe through the horizontal axis and the positioning rod structure, and limit the positioning frame by tightening the fastening nut, and press the positioning rod against the outside of the sound insulation board to complete the sealing operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the installation structure of the sound insulation board of the utility model;

[0019] Figure 3 This is a schematic diagram of the installation structure of the quick-change assembly of the utility model;

[0020] Figure 4 This is a schematic diagram of the installation structure of the pressing plate of the utility model;

[0021] Figure 5 This is a schematic diagram of the installation structure of the positioning rod of the utility model.

[0022] In the figure: 1. Silencer pipe; 2. Upper cover; 3. Sound insulation board;

[0023] 4. Quick-change assembly; 41. Limiting frame; 42. Pressing plate; 43. Fastening screw; 44. Spring; 45. Rotating shaft;

[0024] 5. Positioning frame; 6. Insert plate; 7. Horizontal axis; 8. Fastening nut; 9. Positioning rod. DETAILED DESCRIPTION

[0025] 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.

[0026] like Figures 1 to 5 As shown, the utility model provides a device for replacing the sound insulation material inside the muffler, comprising a muffler pipe 1, a top cover 2 is sleeved on the top of the muffler pipe 1, the structure of the muffler pipe 1 is opened through the top cover 2, and the internal structure is replaced, a sound insulation board 3 is slidably arranged inside the top cover 2, and quick-change components 4 are also included at both ends of the sound insulation board 3;

[0027] The quick-change assembly 4 includes a limit frame 41 slidably arranged on the outside of the sound insulation board 3, and the limit frame 41 is rotatably arranged with the silencer pipe 1, a pressure plate 42 is tightly arranged inside the limit frame 41, a rotating shaft 45 is rotatably arranged on the top of the pressure plate 42, and the rotating shaft 45 is fixed to the silencer pipe 1, a fastening screw 43 passes through the inside of the pressure plate 42, and the fastening screw 43 passes through the limit frame 41 and is spirally arranged with the silencer pipe 1, the sound insulation board 3 is inserted into the inside of the limit frame 41, so as to achieve the effect of quickly installing the sound insulation board 3, and the operation is simple.

[0028] Specifically, a spring 44 is fixedly provided on the outer side of the pressure plate 42, and the other end of the spring 44 is pressed against the inner wall of the muffler 1. The pressure plate 42 structure can be quickly popped up by using the spring 44 to disassemble the limit frame 41.

[0029] Furthermore, the sound insulation board 3 is configured to be divided into two halves, and both ends of the sound insulation board 3 are provided with T-shaped slots that fit into the slots of the limiting frame 41, which makes it easier for the staff to insert the two halves of the sound insulation board 3 into the corresponding limiting frames 41 to complete the limiting operation.

[0030] Furthermore, a plug plate 6 is fitted on the top of the sound insulation board 3, and the plug plate 6 is slidably arranged with the limit frame 41. A horizontal axis 7 is fixedly arranged on the outer side of the plug plate 6. The plug plate 6 is inserted into the interior of the limit frame 41, and the horizontal axis 7 can be placed inside the silencer 1 to provide an installation position.

[0031] It is worth mentioning that a positioning frame 5 is slidably provided on the outer side of the horizontal axis 7, a positioning rod 9 is passed through the interior of the positioning frame 5, and the positioning rod 9 is pressed against the sound insulation board 3, and the positioning frame 5 and the internal positioning rod 9 are pressed against the inner wall of the sound insulation board 3. The deformed positioning rod 9 structure forms an arc, which can maintain the stability of the compression.

[0032] It is worth noting that a fastening nut 8 is disposed on the outer side of the positioning frame 5 , and the fastening nut 8 is spirally disposed with the horizontal axis 7 , and the positioning frame 5 can be tightened by rotating the fastening nut 8 .

[0033] Among them, the silencer 1 is the prior art and will not be described in detail; at the same time, the utility model also includes a power supply, a controller and a switch, which are not the main technical points of this patent and will not be described in detail.

[0034] Working principle and process:

[0035] When the sound insulation board 3 structure ages and the sound insulation board 3 structure inside the silencer pipe 1 needs to be replaced, the upper cover 2 of the silencer pipe 1 can be directly opened to expose the replacement port. After the sound insulation board 3 structure is fixed, the plug plate 6 is first pulled out from the inside of the limit frame 41, the horizontal axis 7 structure is taken out, and the fastening screws 43 inside the pressure plate 42 are rotated and taken out. The pressure plate 42 is pushed by the spring 44 on the outside of the pressure plate 42, and the pressure plate 42 is controlled to rotate and pop open under the connection of the rotating shaft 45, so that the sound insulation board 3 structure inside the limit frame 41 can be removed more conveniently. After removal, the sound insulation board 3 can be replaced with a new one. The structure is inserted into the interior of the limit frame 41. After the assembly is completed, the pressure plate 42 structure is pressed to push the extrusion spring 44 structure, and the limit frame 41 is pushed to the position close to the inner wall of the silencer pipe 1. The fastening screw 43 is tightened into the positioning hole of the pressure plate 42 again to position the limit frame 41 to maintain the unfolding effect of the sound insulation board 3. The horizontal axis 7 is installed between the two limit frames 41 through the plug plate 6, the positioning frame 5 is moved, and the positioning rod 9 is pushed close to the surface of the sound insulation board 3. The fastening nut 8 is rotated to limit the positioning frame 5, thereby improving the upper limiting effect of the sound insulation board 3 and making the silencer more stable.

[0036] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0037] Although 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. A device for facilitating the replacement of sound insulation material inside a muffler, comprising a muffler pipe (1), characterized in that: The top end of the muffler pipe (1) is sleeved with an upper cover (2), a sound insulation board (3) is slidably arranged inside the upper cover (2), and quick-change components (4) are also provided at both ends of the sound insulation board (3); The quick-change assembly (4) includes a limit frame (41) slidably arranged on the outside of the sound insulation board (3), and the limit frame (41) and the silencer pipe (1) are rotatably arranged, a pressure plate (42) is tightly arranged inside the limit frame (41), a rotating shaft (45) is rotatably arranged at the top of the pressure plate (42), and the rotating shaft (45) and the silencer pipe (1) are fixedly arranged, a fastening screw (43) passes through the inside of the pressure plate (42), and the fastening screw (43) passes through the limit frame (41) and is spirally arranged with the silencer pipe (1).

2. A device for facilitating replacement of sound insulation material inside a muffler according to claim 1, characterized in that: A spring (44) is fixedly arranged on the outer side of the pressure plate (42), and the other end of the spring (44) is tightly pressed against the inner wall of the silencer pipe (1).

3. The device for facilitating replacement of sound insulation material inside a muffler according to claim 1, characterized in that: The sound insulation board (3) is arranged in two halves, and both ends of the sound insulation board (3) are provided with T-shaped slots that fit into the slots of the limiting frame (41).

4. The device for facilitating replacement of sound insulation material inside a muffler according to claim 1, characterized in that: The top end of the sound insulation board (3) is fitted with an inserting plate (6), and the inserting plate (6) is slidably arranged with the limiting frame (41), and a transverse axis (7) is fixedly arranged on the outer side of the inserting plate (6).

5. The device for facilitating replacement of sound insulation material inside a muffler according to claim 4, characterized in that: A positioning frame (5) is slidably arranged on the outer side of the transverse axis (7), a positioning rod (9) penetrates the interior of the positioning frame (5), and the positioning rod (9) is tightly pressed against the sound insulation board (3).

6. The device for facilitating replacement of sound insulation material inside a muffler according to claim 5, characterized in that: The outer side of the positioning frame (5) is fitted with a fastening nut (8), and The fastening nut (8) is spirally arranged with the horizontal shaft (7).

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