Silencer for ship

Abstract

The invention provides a silencer for a ship, and relates to the technical field of silencing equipment. The inner cylinder assembly is arranged on the right side of the connecting assembly, the bottom side plate is fixed to the outer end of the connecting position of the connecting assembly and the inner cylinder assembly, the inner cylinder assembly is connected to a pipeline through the connecting assembly, the inner cylinder assembly guides and disperses airflow for the first time, the backflow assembly can conduct backflow, and the introduced airflow is slowed down; the outer cylinder assembly at the outer end of the inner cylinder assembly is integrally reinforced, so that the outer cylinder assembly is more stable during secondary noise reduction, the inner filter pad is additionally arranged between the outer cylinder assembly and the shell assembly, noise is further reduced through the inner filter pad before third-time noise reduction is formed on the shell assembly, the whole device is made of aluminum-silicon alloy, and the air suffocation phenomenon is avoided through third-time noise reduction. The problems that an existing silencer made of non-metal materials is short in service life, the pipeline suck-back or suffocation phenomenon is easily caused by a simple silencing structure, and an outlet of a pipeline is abnormal are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of silencing equipment, and in particular to a ship silencer. Background Art

[0002] With the continuous development of science and technology, various scientific research studies have also begun to increase. The development and progress of some scientific research can better optimize people's quality of life. Some marine scientific research detections and some special scientific research monitoring and research require exploration of the seabed, which will require the use of underwater vehicles. Underwater vehicles can dive to the seabed and better detect various terrain conditions on the seabed or ecological minerals.

[0003] When the underwater vehicle dives into the seabed, it needs to be operated again. For the detection of the seabed range, some pipe outlets of the underwater vehicle will cause large vibrations, which will affect the detection sensing position of the underwater vehicle. Therefore, silencers will be installed at the pipe outlets to reduce the impact of noise;

[0004] First, existing silencers are mostly made of non-metallic materials, which have a short lifespan and poor corrosion resistance;

[0005] Second, a simple silencer structure can easily cause back suction or air holding in the pipeline, leading to abnormal problems at the pipeline outlet. Summary of the invention

[0006] In view of this, the present invention provides a ship silencer, which solves the problem that existing non-metallic silencers have a short lifespan and a simple silencer structure that easily causes pipeline back suction or air holding, leading to abnormal problems at the pipeline outlet.

[0007] To achieve the above object, the present invention provides the following technical solution: A ship muffler of the present invention is achieved by the following specific technical means:

[0008] The present invention provides a ship silencer, which specifically comprises: a connecting component; an inner cylinder component is arranged at the right side position of the connecting component, a bottom side plate is fixed at the outer end of the connecting position between the connecting component and the inner cylinder component, a reflux component is rotatably installed at the position of the inner end of the inner cylinder component, an outer cylinder component is installed at the outer end position of the inner cylinder component, an outer shell component is installed at the outer position of the outer cylinder component, an inner filter pad is filled at the position between the outer shell component and the outer cylinder component, an outer ring frame is added at the installation position of the inner filter pad, and air holes are arranged on the outer cylinder component and the outer shell component.

[0009] Preferably, the threaded joint block of the connecting assembly is configured as a cylindrical block structure, the left side of the threaded joint block is connected to the pipeline, the right side of the threaded joint block is connected to the inner cylinder assembly, and an outer groove is provided at the position of the threaded joint block close to the inner cylinder assembly.

[0010] Preferably, the inner cylinder tube of the inner cylinder assembly is connected to the right side of the connecting assembly, an inner outlet hole is provided on the inner cylinder tube near the connecting assembly, a chamfered structure is provided on the inner end of the inner outlet hole, an inner retaining ring is installed on the left side of the inner outlet hole of the inner cylinder tube, a guide plate is provided on the inner retaining ring, the guide plate is provided as an arc structure facing the right side, and the guide plates are arranged in a circular array on the inner retaining ring.

[0011] Preferably, the supporting plate of the reflux assembly is fixed at the end position of the inner cylinder tube of the inner cylinder assembly, a guide plate is rotatably installed on the supporting plate, a spring is installed between the guide plate and the supporting plate, a dispersion column is provided at the outer end position of the guide plate, the root position of the dispersion column is an inwardly concave arc groove structure, the dispersion column is arranged in a conical structure, and a spiral sheet is arranged on the dispersion column.

[0012] Preferably, the left side of the outer tube of the outer tube assembly is fixed on the bottom side plate, the outer tube is arranged at the outer end position of the inner tube assembly, a reinforcement strip is arranged on the wall of the outer tube, the reinforcement strip is arranged as a structure protruding inside and outside, an inner ring frame is installed at the inner end of the outer tube, holes are arranged on the inner ring frame, chamfers are arranged at the holes of the inner ring frame, the outer groove at the outer end of the inner ring frame corresponds to the reinforcement strip, an inner hole plate is installed at the end position of the outer tube, and air holes are arranged at the inner hole plate and the outer tube.

[0013] Preferably, the shell tube of the shell assembly is fixed on the bottom side plate, an outer baffle is installed at the end of the shell tube, and inner strips are vertically arranged on the inner wall of the shell tube, and the inner strips are arranged in a circular array.

[0014] Preferably, air holes are provided on the end of the outer cylinder assembly and the left side wall of the outer shell assembly, the position between the outer shell assembly and the outer cylinder assembly is filled with an inner filter pad, an outer ring frame is installed at the outer end of the filling position of the inner filter pad, the outer ring frame is fixed at the end of the outer cylinder assembly, and the outer end of the outer ring frame is supported on the inner wall of the outer shell tube.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The connecting component in the present invention connects the inner cylinder component to the pipeline. When the airflow passes through the inner cylinder component, the inner cylinder component guides and disperses the airflow for the first time. After the reflux component inside the inner cylinder component contacts the airflow, it allows the airflow to reflux in the opposite direction, so that the introduced airflow is slowed down, and then the airflow is discharged from the inner cylinder component to the outer cylinder component. The outer cylinder component is more stable as a whole, so that the outer cylinder component can guide the airflow, and the gas discharged by the outer cylinder component is more stable. An inner filter pad is installed at the outer end of the outer cylinder component. The airflow passes through the inner filter pad for absorption and buffering, and then the airflow is discharged through the outer shell component at the outer end of the inner filter pad, thereby completing the noise reduction and silencing of the airflow. The outer ring frame between the outer shell component and the outer cylinder component has the function of reinforcement and support, and the inner filter pad can be replaced after long-term use to maintain the silencing stability of the inner filter pad. The device is made of aluminum silicon alloy as a whole, and the three-time silencing avoids the suffocation phenomenon. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

[0018] The drawings described below are only related to some embodiments of the present invention, but are not intended to limit the present invention.

[0019] In the attached picture:

[0020] Figure 1 Shown is a schematic diagram of the overall structure of the present application.

[0021] Figure 2 A schematic diagram showing the overall decomposition structure of the present application.

[0022] Figure 3 A schematic diagram of the outer ring frame and outer shell assembly structure of the present application is shown.

[0023] Figure 4 A schematic diagram showing the structure of the outer cylinder assembly of the present application.

[0024] Figure 5 A schematic diagram showing the position structure of the inner ring frame of the present application is shown.

[0025] Figure 6 A schematic diagram showing the structure of the inner barrel assembly of the present application is shown.

[0026] Figure 7 A schematic diagram of the reflow assembly structure of the present application is shown.

[0027] Figure 8 This application shows Figure 5 Schematic diagram of the locally enlarged structure at A in the middle.

[0028] Fig. 9 This application shows Figure 6Schematic diagram of the locally enlarged structure at point B.

[0029] Reference numerals list

[0030] 1. Connecting assembly; 101. Threaded joint block; 102. External groove;

[0031] 2. Inner cylinder assembly; 201. Inner cylinder tube; 202. Inner outlet hole; 203. Inner retaining ring; 204. Guide plate;

[0032] 3. Reflux assembly; 301. Carrying plate; 302. Guide plate; 303. Dispersion column;

[0033] 4. Outer cylinder assembly; 401. Outer cylinder tube; 402. Reinforcement strip; 403. Inner ring frame; 404. Inner hole plate; 405. Outer groove;

[0034] 5. Shell assembly; 501. Shell tube; 502. Outer baffle; 503. Inner strip;

[0035] 6. Inner filter pad;

[0036] 7. Outer ring frame;

[0037] 8. Stomata;

[0038] 9. Bottom side panels. DETAILED DESCRIPTION

[0039] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. The following describes various embodiments of the present invention in detail in conjunction with the drawings.

[0040] Embodiment 1:

[0041] Please refer to Figures 1 to 9 :

[0042] The present invention proposes a ship silencer, comprising: a connecting component 1; an inner cylinder component 2 is arranged at the right position of the connecting component 1, a bottom side plate 9 is fixed at the outer end of the connecting position between the connecting component 1 and the inner cylinder component 2, a reflux component 3 is rotatably installed at the position of the inner end of the inner cylinder component 2, an outer cylinder component 4 is installed at the outer end position of the inner cylinder component 2, an outer shell component 5 is installed at the outer position of the outer cylinder component 4, an inner filter pad 6 is filled at the position between the outer shell component 5 and the outer cylinder component 4, an outer ring frame 7 is added at the installation position of the inner filter pad 6, and air holes 8 are arranged on the outer cylinder component 4 and the outer shell component 5.

[0043] In the present disclosure, Figure 2 Figure 7 As shown, the threaded joint block 101 of the connection component 1 is configured as a cylindrical block structure, the left side of the threaded joint block 101 is connected to the pipeline, and the right side of the threaded joint block 101 is connected to the inner cylinder component 2. An outer groove 102 is provided at the position of the threaded joint block 101 close to the inner cylinder component 2. The threaded joint block 101 is configured as a main connecting component between the pipeline and the device as a whole, so that the threaded joint block 101 is configured as a cylindrical block structure, so as to facilitate the stable connection of the threaded joint block 101 and the air outlet pipe of the underwater vehicle, and the outer groove 102 is provided at the connection position between the threaded joint block 101 and the inner cylinder component 2, so that the outer groove 102 can be adjusted by using a tool for force, so as to facilitate the connection of the connection component 1 as a whole to the exhaust pipe, and achieve a more convenient operation effect.

[0044] In the present disclosure, Figure 6 Figure 7As shown, the inner tube 201 of the inner tube component 2 is connected to the right side of the connecting component 1, and an inner outlet hole 202 is provided at the position of the inner tube 201 close to the connecting component 1, and the inner end of the inner outlet hole 202 is provided with a chamfered structure, and the airflow introduced into the inner tube 201 will be discharged from the position of the inner outlet hole 202. In order to allow the airflow to be better discharged from the position of the inner outlet hole 202, the inner end surface of the inner outlet hole 202 is directly chamfered, so that the airflow can be better and quickly discharged through the inner outlet hole 202, and an inner retaining ring 203 is installed at the left side of the inner outlet hole 202 of the inner tube 201, and a guide plate 204 is provided on the inner retaining ring 203, and the guide plate 204 is arranged in an arc structure facing the right side, and the guide plates 204 are arranged in a circular array. On the inner baffle ring 203, after the airflow enters the bottom position of the inner tube 201, the airflow will contact and guide the reflux component 3 and then return, and the reflux airflow will contact the inner baffle ring 203, and a guide plate 204 is provided on the inner baffle ring 203, and the guide plate 204 is an arc-shaped structure extending toward the inner end, so that the reflux airflow is transported to the position of the inner outlet hole 202 through the guide plate 204, so that the inner outlet hole 202 discharges the airflow, and secondly, the guide plates 204 on the inner baffle ring 203 are arranged in a circular array structure, so that there are gaps between the guide plates 204, so that the airflow will not be blocked by the guide plates 204 when entering through the inner baffle ring 203, so that the airflow can enter better and directly impact the reflux component 3.

[0045] In the present disclosure, Figure 6 Figure 7As shown, the carrier plate 301 of the reflux assembly 3 is fixed at the end position of the inner tube 201 of the inner tube assembly 2, and a guide plate 302 is rotatably mounted on the carrier plate 301, and a spring is installed between the guide plate 302 and the carrier plate 301. First, the carrier plate 301 is fixed at the end position of the inner tube 201, and a guide plate 302 is rotatably mounted on the carrier plate 301, and a spring is installed between the guide plate 302 and the carrier plate 301. At this time, the external airflow directly impacts the guide plate 302. When the guide plate 302 moves toward the carrier plate 301, a spring is installed between the guide plate 302 and the carrier plate 301, so that the guide plate 302 forms a certain buffer on the carrier plate 301, so that the noise generated by the airflow impacting the guide plate 302 can be reduced, achieving a certain effect of silencing. The outer end of the guide plate 302 is provided with a dispersion column 303, the root of the dispersion column 303 is set in an arc shape, the dispersion column 303 is set in a conical structure, and a spiral is provided on the dispersion column 303 The spiral vane, when the airflow impacts the guide plate 302 for buffering, the dispersion column 303 of the guide plate 302 will preferentially contact the airflow, and the dispersion column 303 is set to a conical structure, and at the same time, a spiral blade is set on the outer wall of the dispersion column 303, so that the airflow passes through the spiral blades after impacting the dispersion column 303, thereby realizing the rotation of the guide plate 302, thereby dispersing the airflow flowing through the guide plate 302, so that the airflow can be slowed down. Secondly, because the dispersion column 303 is set to a conical structure, the dispersed airflow will impact the guide plate 302 at the root of the dispersion column 303, and the guide plate 302 here is set to an arc structure, so that the airflow passing through here can be guided, so that the airflow has a reverse reflux, and the reflux airflow will meet the airflow impacting toward the reflux component 3, again achieving the slowing down of the airflow, and at the same time allowing the airflow to move close to the inner wall of the inner cylinder component 2, so that the inner cylinder component 2 is convenient for releasing the airflow, and realizing the initial silencing effect on the airflow.

[0046] Embodiment 2, based on embodiment 1, as Figure 4 Figure 5As shown, the left side of the outer tube 401 of the outer tube assembly 4 is fixed on the bottom side plate 9, the outer tube 401 is arranged at the outer end position of the inner tube assembly 2, and a reinforcement strip 402 is arranged on the wall of the outer tube 401, and the reinforcement strip 402 is arranged as a structure with inner and outer protrusions. The reinforcement strip 402 is directly arranged on the wall of the outer tube 401, and the reinforcement strip 402 is arranged to form an inner and outer protrusion structure on the outer tube 401, so that the inner and outer walls of the outer tube 401 are both protrusion structures, so that the reinforcement strip 402 can reinforce the outer tube 401 more stably, and at the same time, the airflow passing through the inner and outer walls of the outer tube 401 is auxiliary guided. , and also reduce the vibration of the airflow when it contacts the outer cylinder component 4, so as to achieve auxiliary silencing and noise reduction. An inner ring frame 403 is installed at the inner end of the outer cylinder tube 401, and a hole is arranged on the inner ring frame 403. The hole of the inner ring frame 403 is arranged with a chamfer, and the outer groove 405 at the outer end of the inner ring frame 403 corresponds to the reinforcement strip 402. The inner ring frame 403 is installed at the inner end of the outer cylinder tube 401, and the inner ring frame 403 is at the end position of the outer wall of the inner cylinder component 2 at the same time, so that the inner ring frame 403 is supported between the inner cylinder component 2 and the outer cylinder tube 401, so that the outer cylinder component 4 placed at the outer end of the inner cylinder component 2 is more stable as a whole, and will not be generated when the airflow impacts Vibration, and the outer wall of the inner ring frame 403 is provided with an array of outer grooves 405, and the outer grooves 405 correspond to the reinforcement strips 402 on the inner wall of the outer tube 401, so that the inner ring frame 403 is clamped on the raised reinforcement strips 402 through the outer grooves 405, so that a more stable state is formed between the inner ring frame 403 and the outer tube 401, and the airflow will flow through the position between the outer tube 401 and the inner tube assembly 2. In order to avoid the influence of the inner ring frame 403 on the passing airflow, a larger structure hole is directly set on the inner ring frame 403, and the hole wall of the inner ring frame 403 is set to a chamfered structure to prevent the airflow from passing through the inner ring frame 403. , the influence of the airflow on the inner ring frame 403 can be further reduced, and an inner orifice plate 404 is installed at the end position of the outer tube 401, and air holes 8 are arranged at the inner orifice plate 404 and the outer tube 401, and the airflow is arranged to be discharged from the end position of the outer tube component 4 as a whole. In order to increase the efficient discharge of gas from the end of the outer tube component 4, the inner orifice plate 404 is directly arranged at the end of the outer tube 401, and the air holes 8 with the same structure are arranged on the wall of the inner orifice plate 404 and the end of the outer tube 401, so that the inner orifice plate 404 cooperates with the end of the outer tube 401, and the number of air holes 8 is increased, thereby better increasing the discharge efficiency of the airflow.

[0047] In the present disclosure, Figure 3As shown, the shell tube 501 of the shell assembly 5 is fixed on the bottom side plate 9, and an outer blocking cover 502 is installed at the end position of the shell tube 501. An inner strip 503 is vertically arranged on the inner wall of the shell tube 501, and the inner strip 503 is arranged in a circular array. The shell tube 501 is fixed at the outermost end position of the bottom side plate 9, and the outer blocking cover 502 is fixed at the end position of the shell tube 501. Because an inner filter pad 6 is arranged between the shell tube 501 and the outer cylinder assembly 4, and the inner filter pad 6 will be damaged after long-term use, and the outer blocking cover 502 can be opened, so that after the inner filter pad 6 is used for a long time, the inner filter pad 6 can be replaced by opening the outer blocking cover 502, and the inner strip 503 is arranged on the inner wall of the shell tube 501. The raised inner strip 503 has the function of reinforcing the shell tube 501, and at the same time, the inner strip 503 also has the same guiding effect on the airflow as 402, so that the airflow can be better discharged from the air hole 8 at the shell tube 501.

[0048] Embodiment 3, based on embodiment 1, Figure 2 Figure 3 As shown, air holes 8 are provided on the end of the outer cylinder component 4 and the left wall of the outer shell component 5, the position between the outer shell component 5 and the outer cylinder component 4 is filled with an inner filter pad 6, and an outer ring frame 7 is installed at the outer end of the filling position of the inner filter pad 6, the outer ring frame 7 is fixed to the end of the outer cylinder component 4, and the outer end of the outer ring frame 7 is supported on the inner wall of the outer shell tube 501. The installed connecting component 1 will directly guide the airflow to the position of the inner cylinder component 2, and the inner cylinder component 2 will guide the airflow to the reflux component 3, and the reflux component 3 can realize the reverse reflux of the airflow, assist in buffering the incoming airflow, and discharge the buffered airflow at the same time. After the airflow enters the inner end of the outer cylinder component 4, it will The air is discharged to the outside through the air hole 8 set at the end of the outer cylinder component 4, and an inner filter pad 6 is installed between the outer end of the outer cylinder component 4 and the outer shell component 5. The inner filter pad 6 will directly contact the airflow. After the airflow enters the inner filter pad 6, the inner filter pad 6 will absorb the airflow, so that the inner filter pad 6 can adsorb and reduce the noise of the airflow, thereby achieving the silencing effect on the airflow. Then the airflow is discharged from the air hole 8 of the outer shell component 5 to achieve the effect of noise reduction and silencing. At the same time, an outer ring frame 7 is arranged between the end of the outer cylinder component 4 and the outer shell component 5. The outer ring frame 7 is a ring-shaped frame structure. The outer ring frame 7 mainly plays an auxiliary support for the outer shell component 5, making the outer shell component 5 more stable.

[0049] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. There are many ways of detachable installation, for example, it can be through the method of plug-in and buckle matching, and for example, through the method of bolt connection, etc.

[0050] The above clearly and completely describes the concept, specific structure and technical effects of the present invention in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the present invention.

[0051] Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of the present invention. In addition, all the connection / connection relationships mentioned in the text do not refer to the direct connection of components, but refer to the fact that a better connection structure can be formed by adding or reducing connection accessories according to the specific implementation situation.

[0052] The specific description of the present invention in the above embodiments is only used to further illustrate the present invention and cannot be understood as limiting the scope of protection of the present invention. Technical engineers in this field may make some non-essential improvements and adjustments to the present invention based on the contents of the above invention, which fall within the scope of protection of the present invention.

Claims

1. A ship silencer, comprising: A connecting component (1); an inner cylinder component (2) is arranged at the right side of the connecting component (1); a bottom side plate (9) is fixed at the outer end of the connecting position between the connecting component (1) and the inner cylinder component (2); the characterised in that a reflux component (3) is rotatably mounted at the inner end of the inner cylinder component (2), and an outer cylinder component (4) is mounted at the outer end of the inner cylinder component (2); An outer shell component (5) is installed at an external position of the outer cylinder component (4), an inner filter pad (6) is filled at a position between the outer shell component (5) and the outer cylinder component (4), an outer ring frame (7) is additionally installed at the installation position of the inner filter pad (6), and air holes (8) are provided on both the outer cylinder component (4) and the outer shell component (5).

2. A ship muffler according to claim 1, characterized in that: The connection assembly (1) comprises a threaded joint block (101), the threaded joint block (101) being arranged in the form of a cylindrical block structure, the left side of the threaded joint block (101) being connected to a pipeline, the right side of the threaded joint block (101) being connected to an inner cylinder assembly (2), and an outer groove (102) being arranged at a position of the threaded joint block (101) close to the inner cylinder assembly (2).

3. A ship silencer according to claim 1, characterized in that: The inner cylinder assembly (2) comprises an inner cylinder tube (201), the inner cylinder tube (201) being connected to the right side of the connecting assembly (1), an inner outlet hole (202) being provided at a position of the inner cylinder tube (201) close to the connecting assembly (1), an inner end of the inner outlet hole (202) being provided with a chamfered structure, an inner retaining ring (203) being installed at the left side of the inner outlet hole (202) of the inner cylinder tube (201), a guide plate (204) being provided on the inner retaining ring (203), the guide plate (204) being provided as an arc-shaped structure facing the right side, and the guide plates (204) being arranged on the inner retaining ring (203) in a circular array.

4. A ship muffler according to claim 1, characterized in that: The reflux assembly (3) comprises a bearing plate (301), the bearing plate (301) being fixed at the end position of the inner cylinder tube (201) of the inner cylinder assembly (2), a guide plate (302) being rotatably mounted on the bearing plate (301), and a spring being installed at a position between the guide plate (302) and the bearing plate (301).

5. A ship silencer according to claim 4, characterized in that: The outer end of the guide plate (302) is provided with a dispersion column (303), the root of the dispersion column (303) is an inwardly concave arc groove structure, the dispersion column (303) is arranged as a conical structure, and a spiral sheet is arranged on the dispersion column (303).

6. A ship muffler according to claim 1, characterized in that: The left side of the outer cylinder tube (401) of the outer cylinder assembly (4) is fixed on the bottom side plate (9), the outer cylinder tube (401) is arranged at the outer end of the inner cylinder assembly (2), and a reinforcement strip (402) is arranged on the wall of the outer cylinder tube (401), and the reinforcement strip (402) is arranged as a structure protruding inside and outside.

7. A ship silencer according to claim 6, characterized in that: An inner ring frame (403) is installed at the inner end of the outer tube (401), and a hole is provided on the inner ring frame (403). The hole of the inner ring frame (403) is chamfered, and an outer groove (405) at the outer end of the inner ring frame (403) corresponds to the reinforcement strip (402). An inner hole plate (404) is installed at the end position of the outer tube (401), and air holes (8) are provided at the inner hole plate (404) and the outer tube (401).

8. A ship silencer according to claim 1, characterized in that: The shell assembly (5) comprises a shell tube (501), the shell tube (501) being fixed on the bottom side plate (9), an outer baffle cover (502) being installed at the end of the shell tube (501), and inner strips (503) being vertically arranged on the inner wall of the shell tube (501), the inner strips (503) being arranged in a circular array.

9. A ship muffler according to claim 1, characterized in that: The end of the outer cylinder component (4) and the left side wall of the outer shell component (5) are both provided with air holes (8); the position between the outer shell component (5) and the outer cylinder component (4) is filled with an inner filter pad (6); an outer ring frame (7) is installed at the outer end of the filling position of the inner filter pad (6); the outer ring frame (7) is fixed to the end of the outer cylinder component (4); and the outer end of the outer ring frame (7) is supported on the inner wall of the outer shell tube (501).

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