Silencing device applied to crust breaking air cylinder exhaust pipe

Abstract

The utility model discloses a silencer applied to an exhaust pipe of a crust breaking cylinder, the exhaust pipe is provided with an air inlet end and an air outlet end, and the silencer comprises a sound insulation cotton sleeve, a buffer damping sleeve and a limiting pipe; the sound insulation cotton sleeve is sleeved on the peripheral side of the exhaust pipe; the buffer damping sleeve is sleeved on the peripheral side of the sound insulation cotton sleeve; the limiting pipe is connected to the peripheral side of the buffering and damping sleeve in a sleeving mode, the limiting pipe comprises two semi-circular-ring-shaped limiting parts, and the limiting parts are connected through a connecting piece; a protruding column is fixed to the peripheral side face of the limiting pipe, the sound insulation cotton sleeve comprises a first end close to the air inlet end, and the first end is folded outwards to shield the end face of the buffering and damping sleeve and the end face of the limiting pipe and is connected with the protruding column. And the harm to operators in an electrolysis workshop caused by noise generated by the exhaust pipe can be reduced.

Description

Technical Field

[0001] This application relates to the field of noise reduction technology, and in particular to a noise reduction device applied to the exhaust pipe of a cylinder with a shell-forming structure. Background Technology

[0002] In the aluminum electrolysis production process, the electrolytic cell needs to continuously consume raw materials to produce molten aluminum through electrolysis. However, due to the special structure of the production equipment, the addition of alumina raw materials is intermittent, and the raw material inlet can easily self-close within a period of time, forming a very hard shell at the raw material inlet. It is necessary to open the shell hole with a shell-breaking cylinder in order to add the alumina raw materials into the electrolytic cell.

[0003] During the shell-breaking process, the shell-breaking cylinder uses compressed air as its power source. When the shell-breaking cylinder reverses its direction, the exhaust pipe of the shell-breaking cylinder will generate a lot of noise, which will cause great harm to the workers in the electrolysis workshop. Utility Model Content

[0004] This application provides a muffler for use in the exhaust pipe of a shell-breaking cylinder, which can reduce the noise generated by the exhaust pipe and the harm caused to workers in the electrolysis workshop.

[0005] Specifically, a muffler for an exhaust pipe of a cylinder with a shell is provided. The exhaust pipe has an inlet end and an outlet end. The muffler includes: a sound-insulating cotton sleeve fitted onto the outer periphery of the exhaust pipe; a buffer and shock-absorbing sleeve fitted onto the outer periphery of the sound-insulating cotton sleeve; and a limiting tube fitted onto the outer periphery of the buffer and shock-absorbing sleeve. The limiting tube includes two semi-circular limiting portions connected by a connector. A protruding post is fixed on the outer periphery of the limiting tube. The sound-insulating cotton sleeve includes a first end located near the inlet end. The first end is folded outward to cover the end face of the buffer and shock-absorbing sleeve and the end face of the limiting tube, and is connected to the protruding post.

[0006] In some embodiments of this application, a through hole is provided on the first end, penetrating the inner and outer sides of the first end, and the protrusion passes through the through hole to connect the first end to the protrusion.

[0007] In some embodiments of this application, multiple protrusions are provided, and the multiple protrusions are arranged at intervals along the periphery of the limiting tube.

[0008] In some embodiments of this application, the protrusions are provided on the outer peripheral sides of both limiting portions.

[0009] In some embodiments of this application, the first end portion is provided with dividing slits extending along the length of the exhaust pipe on both sides. The dividing slits divide the first end portion into two separable connecting portions. One connecting portion is connected to a protrusion on a limiting portion, and the other connecting portion is connected to a protrusion on a limiting portion.

[0010] In some embodiments of this application, a groove structure is provided on the inner peripheral side of the limiting tube, and the groove structure includes multiple grooves.

[0011] In some embodiments of this application, the groove structure is generally honeycomb-shaped.

[0012] In some embodiments of this application, the wall of the limiting tube is a hollow tube wall, and a sound-absorbing chamber is defined between the outer peripheral side and the inner peripheral side of the limiting tube.

[0013] In some embodiments of this application, the sound-absorbing chamber is a vacuum chamber.

[0014] In some embodiments of this application, the cushioning and shock-absorbing sleeve is an elastic sponge sleeve or an elastic rubber sleeve.

[0015] The beneficial effects of this application are as follows: it can reduce the noise generated by the vibration of the exhaust pipe in three stages, thereby effectively reducing the loudness of the noise heard by the workers in the electrolysis workshop and reducing the harm to the workers; in addition, by using the outward-curved first end to cover the end face of the limiting tube near the intake end, the first end is softer than the rigid limiting tube, which can prevent the limiting tube from contacting the cylinder body, thereby avoiding hard friction or scratches between the limiting tube and the cylinder body that could damage the cylinder body. Furthermore, the first end can contact the cylinder body more tightly, thereby improving the sealing effect at the contact point between the muffler and the cylinder body, and thus improving the noise reduction effect at the contact point between the muffler and the cylinder body. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments or related technologies of this application, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a structural schematic diagram of the cross-section of the exhaust pipe and the muffler in one embodiment of this application;

[0018] Figure 2 This is a schematic diagram of the longitudinal section of the exhaust pipe and the muffler in one embodiment of this application.

[0019] Figure label:

[0020] 10. Exhaust pipe; 11. Inlet end; 12. Outlet end; 20. Sound insulation cotton sleeve; 21. First end; 211. Through hole; 212. Dividing gap; 213. Connecting part; 30. Buffer and shock absorption; 40. Limiting tube; 41. Limiting part; 42. Groove structure; 43. Sound absorption chamber; 50. Protruding column; 60. Clamp. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0022] like Figure 1 and Figure 2 As shown, this application provides a muffler for an exhaust pipe 10 of a cylinder with a shell, the exhaust pipe 10 having an inlet end 11 and an outlet end 12, and the muffler including a sound insulation cotton sleeve 20, a buffer shock absorber 30 and a limiting tube 40.

[0023] Specifically, the sound insulation cotton sleeve 20 is fitted onto the outer periphery of the exhaust pipe 10; the buffer and shock absorber 30 is fitted onto the outer periphery of the sound insulation cotton sleeve 20; and the limiting tube 40 is fitted onto the outer periphery of the buffer and shock absorber 30. The limiting tube 40 includes two semi-circular limiting parts 41, which are connected by a connector. Understandably, the sound insulation cotton sleeve 20 can be made of sound-absorbing sponge, which has a good sound insulation effect and can effectively absorb the noise generated by the vibration of the exhaust pipe 10. The buffer and shock absorption sleeve 30 can be made of elastic sponge or elastic rubber, which has a good buffer and shock absorption effect. The buffer and shock absorption sleeve 30 can effectively reduce the impact of the exhaust pipe 10 on the limiting tube 40 when it vibrates, thereby reducing the sound generated by the limiting tube 40 as the exhaust pipe 10 vibrates. The buffer and shock absorption sleeve 30 can also play a good sound insulation role, which can reduce the noise generated by the vibration of the exhaust pipe 10 for a second time. The limiting tube 40 can be a rigid tubular structure. The limiting tube 40 is used to limit and fix the sound insulation cotton sleeve 20 and the buffer and shock absorption sleeve 30 to the exhaust pipe 10. At the same time, it can also reduce the noise generated by the vibration of the exhaust pipe 10 for a third time, thereby effectively reducing the loudness of the noise heard by the workers in the electrolysis workshop and reducing the harm to the workers.

[0024] The limiting tube 40 has a protruding post 50 fixed on its outer peripheral side. The sound insulation cotton sleeve 20 includes a first end 21 located near the air inlet 11. The first end 21 is folded outward to cover the end face of the buffer and shock absorption sleeve 30 and the end face of the limiting tube 40, and is connected to the protruding post 50.

[0025] It is understood that the intake end 11 of the exhaust pipe 10 needs to be connected to the exhaust port on the cylinder block of the cylinder. When the muffler is installed on the exhaust pipe 10, the end of the muffler near the intake end 11 is usually in contact with the cylinder block to ensure that all parts of the exhaust pipe 10 can be muffled and noise reduced. In this application, by covering the end face of the limiting tube 40 near the intake end 11 with the outwardly turned first end 21, the first end 21 is softer than the rigid limiting tube 40, which can prevent the limiting tube 40 from contacting the cylinder block. This can prevent the limiting tube 40 from hard friction or scratching the cylinder block, thus avoiding damage to the cylinder block. In addition, the first end 21 can contact the cylinder block more tightly, thereby improving the sealing effect at the contact point between the muffler and the cylinder block, and thus improving the noise reduction effect at the contact point between the muffler and the cylinder block.

[0026] It should also be noted that the connector can be a clamp 60, and the limiting part 41 can be connected and fixed by the clamp 60 sleeved on the limiting tube 40. When installing the muffler, the sound insulation cotton sleeve 20 can be put on the exhaust pipe 10 first, and then the buffer shock absorber 30 can be put on the sound insulation cotton sleeve 20. Then, the limiting tube 40 is installed on the sound insulation cotton sleeve 20. At this time, the first end 21 is exposed out of the limiting tube 40. By folding the first end 21 outward, the first end 21 is connected to the protrusion 50, and the limiting tube 40 is fixed by the clamp 60, thus completing the installation of the muffler. When disassembling the muffler, the first end 21 can be separated from the protrusion 50, and then the limiting tube 40, the buffer shock absorber 30, and the sound insulation cotton sleeve 20 can be removed in sequence to complete the disassembly of the muffler. The installation and removal of the muffler is relatively convenient.

[0027] In one embodiment of this application, the first end portion 21 is provided with a through hole 211 penetrating the inner and outer sides of the first end portion 21, and the protruding post 50 passes through the through hole 211 to connect the first end portion 21 to the protruding post 50. It can be understood that by inserting the protruding post 50 into the through hole 211, the first end portion 21 can be fixed, making the fixing of the first end portion 21 more convenient and quick.

[0028] In one embodiment, multiple protrusions 50 are provided, and the multiple protrusions 50 are arranged at intervals along the periphery of the limiting tube 40, so that the first end 21 can be fixed more securely. Specifically, the first end 21 is provided with multiple through holes 211, and the multiple through holes 211 correspond one-to-one with the multiple protrusions 50.

[0029] Furthermore, the two limiting parts 41 are provided with protruding posts 50 on their outer peripheral sides, so that the periphery of the first end 21 can be limited, so that the first end 21 can be fixed more securely.

[0030] Furthermore, the first end portion 21 is provided with dividing slits 212 extending along the length of the exhaust pipe 10 on both sides. The dividing slits 212 divide the first end portion 21 into two separable connecting portions 213. One connecting portion 213 is connected to a protrusion 50 on a limiting portion 41, and the other connecting portion 213 is connected to a protrusion 50 on a limiting portion 41. It can be understood that when the first end portion 21 is folded outward, the two connecting portions 213 can be separated along the dividing slits 212, and one connecting portion 213 can be connected to the corresponding protrusion 50 on the limiting portion 41, and the other connecting portion 213 can be connected to the corresponding protrusion 50 on the limiting portion 41, making the folding of the first end portion 21 more convenient.

[0031] See also Figure 1 and Figure 2 As shown, in one embodiment, a groove structure 42 is provided on the inner peripheral side of the limiting tube 40. The groove structure 42 includes multiple grooves. When the noise generated by the exhaust pipe 10 propagates to the groove structure 42, it can be reflected in the groove structure 42, thereby further reducing the noise generated by the exhaust pipe 10.

[0032] Furthermore, the groove structure 42 is generally honeycomb-shaped. It is understood that the honeycomb structure has good sound insulation and sound absorption properties, which can further reduce the noise generated by the exhaust pipe 10.

[0033] In one embodiment, the wall of the limiting tube 40 is a hollow tube wall, and a sound-absorbing chamber 43 is defined between the outer peripheral side and the inner peripheral side of the limiting tube 40. It can be understood that sound attenuates more significantly when propagating in a gas than when propagating in a solid object. By setting a sound-absorbing chamber 43 in the wall of the limiting tube 40, a good sound insulation and noise reduction effect can be achieved, thereby further reducing the noise generated by the exhaust pipe 10. In addition, the weight and quantity of the limiting tube 40 can be reduced, making it easier to transport the limiting tube 40.

[0034] Furthermore, the sound-absorbing chamber 43 is a vacuum chamber, which can achieve better sound insulation and noise reduction, thereby further reducing the noise generated by the exhaust pipe 10.

[0035] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A muffler device applied to the exhaust pipe of a cylinder with a shell-piercing mechanism, characterized in that, The exhaust pipe has an inlet end and an outlet end, and the muffler includes: Sound insulation cotton sleeve, fitted onto the outer periphery of the exhaust pipe; A cushioning and shock-absorbing sleeve is fitted onto the outer periphery of the sound-insulating cotton sleeve; A limiting tube is sleeved on the outer periphery of the buffer shock-absorbing sleeve. The limiting tube includes two semi-circular limiting parts, which are connected by a connector. The limiting tube has a protruding post fixed on its outer peripheral side. The sound insulation cotton sleeve includes a first end located near the air inlet end. The first end is folded outward to cover the end face of the buffer shock-absorbing sleeve and the end face of the limiting tube, and is connected to the protruding post.

2. The muffler device applied to the exhaust pipe of a cylinder with a shell-piercing mechanism according to claim 1, characterized in that, The first end has a through hole extending through the inner and outer sides of the first end, and the protrusion passes through the through hole to connect the first end to the protrusion.

3. The muffler device applied to the exhaust pipe of a cylinder with a shell-piercing mechanism according to claim 1, characterized in that, The protruding post is provided in multiple ways, and the multiple protruding posts are arranged at intervals along the periphery of the limiting tube.

4. The muffler device applied to the exhaust pipe of a cylinder with a shell-piercing mechanism according to claim 3, characterized in that, The two limiting parts are provided with the protruding post on their outer peripheral side surfaces.

5. The muffler device applied to the exhaust pipe of a cylinder with a shell-piercing mechanism according to claim 4, characterized in that, The first end has two dividing slots extending along the length of the exhaust pipe on both sides. The dividing slots divide the first end into two separable connecting parts. One connecting part is connected to a protrusion on a limiting part, and the other connecting part is connected to a protrusion on a limiting part.

6. The muffler device applied to the exhaust pipe of a cylinder with a shell-piercing mechanism according to claim 1, characterized in that, The inner circumferential side of the limiting tube is provided with a groove structure, which includes multiple grooves.

7. The muffler device applied to the exhaust pipe of a cylinder with a shell-piercing mechanism according to claim 6, characterized in that, The groove structure is honeycomb in shape.

8. The muffler device applied to the exhaust pipe of a cylinder with a shell-piercing mechanism according to claim 1, characterized in that, The wall of the limiting tube is a hollow tube wall, and a sound-absorbing chamber is defined between the outer peripheral side and the inner peripheral side of the limiting tube.

9. The muffler device applied to the exhaust pipe of a cylinder with a shell-piercing mechanism according to claim 8, characterized in that, The sound-absorbing chamber is a vacuum chamber.

10. The muffler device applied to the exhaust pipe of a cylinder with a shell-piercing mechanism according to claim 1, characterized in that, The cushioning and shock-absorbing sleeve is an elastic sponge sleeve or an elastic rubber sleeve.

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