Silencer

Abstract

The utility model discloses a silencer which comprises a body, the body is provided with a cavity, the two ends of the cavity are provided with a first communicating nozzle and a second communicating nozzle which are communicated with each other, and the first communicating nozzle and the second communicating nozzle are arranged in a staggered mode. A first inclined partition plate and a second inclined partition plate are arranged in the cavity, the first partition plate is provided with a first communicating groove, the second partition plate is provided with a second communicating groove, and the first communicating groove and the second communicating groove are vertically staggered; the first partition plate and the second partition plate divide the cavity into a first cavity, a second cavity and a third cavity, the first cavity is communicated with the first communication nozzle, the second cavity is located between the first cavity and the third cavity and communicated with the first cavity and the third cavity, and the third cavity is communicated with the second communication nozzle. The propagation path of sound waves in the silencer body is prolonged, the reflection frequency of the sound waves is increased, and finally a better silencing effect is achieved.

Description

Technical Field

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

[0002] Silencer is used in various equipment, such as air pumps, to reduce the noise generated by the air pump during use. That is, the air path of the air pump is connected to the muffler, and the muffler is used to reduce the noise of the sound.

[0003] Existing silencers include a variety of structures, such as: a panel composed of multiple honeycomb sound-absorbing layers, which is mostly used for sound insulation and silencing. The principle is to rely on the flexible sound-absorbing layer to absorb sound waves, but the disadvantage is poor air permeability; another example: a path silencer composed of a transmission pipeline and sound-absorbing holes / sound-absorbing parts, which has good air permeability and can be used for the above-mentioned air pump equipment. The principle is to rely on the transmission pipeline to extend the sound wave transmission path, thereby consuming the sound wave energy.

[0004] However, the structure of the existing silencer for extending the sound wave transmission path is relatively simple. Most of the structures are: two chambers are respectively connected to the silencer inlet and the silencer outlet, and the two chambers are connected, wherein multiple connected silencer chambers can be added between the two chambers, ultimately delaying the sound wave transmission path; after the volume is compressed, the silencer performance of this structure will be greatly reduced, and the silencer performance depends to a large extent on the number of internal chambers, which ultimately makes it difficult to reduce the volume or length.

[0005] Therefore, there is an urgent need for a muffler that can solve one or more of the above problems. Utility Model Content

[0006] In order to solve one or more problems existing in the prior art, the utility model provides a muffler. The utility model adopts the following technical solutions to solve the above problems: a muffler, comprising: a body, the body is provided with a chamber, the two ends of the chamber are provided with a first communication nozzle and a second communication nozzle in communication, the first communication nozzle and the second communication nozzle are staggered up and down;

[0007] The chamber is provided with an inclined first partition plate and a second partition plate, the first partition plate is provided with a first connecting groove, the second partition plate is provided with a second connecting groove, and the first connecting groove and the second connecting groove are arranged alternately up and down;

[0008] The first partition and the second partition divide the chamber into a first chamber, a second chamber and a third chamber, wherein the first chamber is connected to the first connecting nozzle, the second chamber is located between the first chamber and the third chamber and is connected to them, and the third chamber is connected to the second connecting nozzle.

[0009] In some embodiments, the first connecting nozzle and the first connecting groove are vertically offset, and the second connecting nozzle and the second connecting groove are vertically offset, thereby further extending the sound wave propagation path.

[0010] In some embodiments, the first partition and the second partition are inclined toward the same side; further, the first partition and the second partition are arranged in parallel. Compared with the staggered tilt design, the parallel tilt design can make full use of the space of the chamber. The volume of a single chamber formed by the staggered tilt design is relatively larger, and this design has poor applicability to small-volume scenes.

[0011] In some embodiments, the chamber is provided with an opening, the opening is sealed with a cover plate, and the cover plate is sealedly connected to the first partition plate and the second partition plate;

[0012] Furthermore, a sealing flange is provided on one side of the cover plate facing the interior of the chamber, and the sealing flange abuts against the first partition plate and the second partition plate respectively. The purpose of this design is to facilitate the production of the silencer and reduce the manufacturing mold cost.

[0013] In some embodiments, the cover plate is provided with a mating plug plate extending toward the interior of the chamber;

[0014] If the first connecting groove is located at a side away from the cover plate, the matching plug plate and the first partition plate are assembled to form the first connecting groove;

[0015] If the second connecting groove is located at a side away from the cover plate, the matching plug plate and the second partition plate are assembled to form the second connecting groove. The purpose is also to facilitate the production of the muffler and reduce the manufacturing mold cost.

[0016] Further, if the matching plug plate is assembled with the first partition plate, the matching plug plate is parallel to the first partition plate;

[0017] If the matching plug plate is assembled with the second partition plate, the matching plug plate is parallel to the second partition plate.

[0018] The beneficial value achieved by the utility model is that: the utility model can effectively extend the propagation path of the sound wave in the muffler body and increase the reflection frequency of the sound wave through the above design, thereby enhancing the interaction between the sound waves and finally achieving a better muffler effect; the structure is simple and practical, and it is easy to produce. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the utility model;

[0020] Figure 2 It is a cross-sectional view of the utility model;

[0021] Figure 3 It is an exploded schematic diagram of the utility model;

[0022] Figure 4 It is a schematic diagram of the main body of the utility model.

[0023] [Reference Signs]

[0024] 1…main body 10…first communication nozzle 11…second communication nozzle 12…first partition plate 120…first communication groove 13…second partition plate 130…second communication groove 2…cover plate 20…matching plug plate 21…sealing flange 3…first chamber 4…second chamber 5…third chamber. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned purposes, features and advantages of the utility model more understandable, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from this description, and those skilled in the art can make similar improvements without violating the connotation of the utility model. Therefore, the utility model is not limited by the specific embodiments disclosed below.

[0026] The utility model discloses a muffler, combined with Figure 1-Figure 4 As shown, it comprises: a body 1, the body 1 is provided with a chamber, the two ends of the chamber are provided with a first communication nozzle 10 and a second communication nozzle 11 that are connected, the first communication nozzle 10 and the second communication nozzle 11 are staggered, they can be (vertically) staggered up and down or (laterally) staggered left and right or staggered up and down, left and right;

[0027] The chamber is provided with an inclined first partition plate 12 and a second partition plate 13, the first partition plate 12 is provided with a first connecting groove 120, the second partition plate 13 is provided with a second connecting groove 130, and the first connecting groove 120 and the second connecting groove 130 are staggered up and down (staggered up and down, left and right);

[0028] The first partition 12 and the second partition 13 divide the chamber into a first chamber 3, a second chamber 4 and a third chamber 5, wherein the first chamber 3 is connected to the first connecting nozzle 10, the second chamber 4 is located between the first chamber 3 and the third chamber 5 and is connected to them, and the third chamber 5 is connected to the second connecting nozzle 11.

[0029] It should be pointed out that an inclined partition may also be provided in the second chamber 4 (the partition structure is consistent with the first partition 12 or the second partition 13, and it is also provided with a connecting groove, and the connecting groove is arranged alternately up and down with other adjacent connecting grooves), and the second chamber 4 is further divided by this inclined partition. Therefore, this partition may also be provided in plurality. Similarly, the first chamber 3 and the third chamber 5 may also adopt this design.

[0030] Specifically, combined Figure 2-Figure 4 As shown, the first communication nozzle 10 and the first communication groove 120 are vertically offset (or horizontally offset), and the second communication nozzle 11 and the second communication groove 130 are vertically offset (or horizontally offset). The purpose is to further extend the sound wave propagation path.

[0031] Furthermore, the first partition 12 and the second partition 13 may be inclined toward the same side. Furthermore, the first partition 12 and the second partition 13 are arranged in parallel, and their inclination angles may be 30 degrees to 50 degrees. Figure 4 The angle is 40 degrees in the middle. The purpose is to make full use of the space of the chamber and improve the noise reduction efficiency under the same volume.

[0032] Specifically, combined Figure 1-Figure 4 As shown, the chamber is provided with an opening, and a cover plate 2 is sealed and installed on the opening, and the cover plate 2 is sealed and connected to the first partition plate 12 and the second partition plate 13;

[0033] The cover plate 2 is provided with a sealing flange 21 on one side facing the interior of the chamber, and the sealing flange 21 abuts against the first partition plate 12 and the second partition plate 13 respectively;

[0034] Furthermore, the cover plate 2 is provided with a matching plug plate 20 extending toward the interior of the chamber;

[0035] If the first connecting groove 120 is located at a side away from the cover plate 2 , the matching plug plate 20 and the first partition plate 12 are assembled to form the first connecting groove 120 ;

[0036] If the second connecting groove 130 is located at a side away from the cover plate 2, the matching plug plate 20 and the second partition plate 13 are assembled to form the second connecting groove 130. This design can facilitate the formation of the sealed chamber and the connecting groove, thereby reducing the mold opening cost of production.

[0037] Specifically, if the matching plug plate 20 is assembled with the first partition plate 12, the matching plug plate 20 is parallel to the first partition plate 12;

[0038] If the matching plug plate 20 is assembled with the second partition plate 13 , the matching plug plate 20 is parallel to the second partition plate 13 .

[0039] In summary, the utility model can effectively extend the propagation path of sound waves in the muffler body through the above-mentioned design, and increase the reflection frequency of sound waves (making the sound wave propagation energy consumption higher), thereby enhancing the interaction between sound waves, and ultimately achieving a better noise reduction effect; the structure is simple and practical, and easy to produce.

[0040] The above-described embodiments only express one or more implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as a limitation of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model shall be based on the attached claims.

Claims

1. A muffler, characterized in that: include: A body, wherein the body is provided with a chamber, and two ends of the chamber are provided with a first communicating nozzle and a second communicating nozzle that are in communication with each other, and the first communicating nozzle and the second communicating nozzle are staggered; The chamber is provided with an inclined first partition plate and a second partition plate, the first partition plate is provided with a first connecting groove, the second partition plate is provided with a second connecting groove, and the first connecting groove and the second connecting groove are arranged alternately up and down; The first partition and the second partition divide the chamber into a first chamber, a second chamber and a third chamber, wherein the first chamber is connected to the first connecting nozzle, the second chamber is located between the first chamber and the third chamber and is connected to them, and the third chamber is connected to the second connecting nozzle.

2. The muffler according to claim 1, characterized in that: The first communication nozzle is vertically offset from the first communication groove, and the second communication nozzle is vertically offset from the second communication groove.

3. The muffler according to claim 1, characterized in that: The first partition plate and the second partition plate are inclined toward the same side.

4. The silencer according to claim 1 or 3, characterized in that: The first partition plate and the second partition plate are arranged in parallel.

5. The muffler according to claim 1, characterized in that: The chamber is provided with an opening, and a cover plate is sealed and installed on the opening, and the cover plate is sealed and connected with the first partition plate and the second partition plate.

6. The muffler according to claim 5, characterized in that: A sealing flange is provided on a surface of the cover plate facing the interior of the chamber, and the sealing flange is respectively in contact with the first partition plate and the second partition plate.

7. The muffler according to claim 5, characterized in that: The cover plate is provided with a matching plug plate extending toward the interior of the chamber; If the first connecting groove is located at a side away from the cover plate, the matching plug plate and the first partition plate are assembled to form the first connecting groove; If the second communicating groove is located at a side away from the cover plate, the matching plug plate and the second partition plate are assembled to form the second communicating groove.

8. The muffler according to claim 7, characterized in that: If the matching plug plate is combined with the first partition plate, the matching plug plate is parallel to the first partition plate; If the matching plug plate is assembled with the second partition plate, the matching plug plate is parallel to the second partition plate.

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