Gas filtering silencer

Abstract

The utility model discloses a gas filtering silencer, which relates to the technical field of gas silencers, and comprises a lower shell, an upper shell is arranged at the upper end of the lower shell, a gas inlet is arranged at the front end of the lower shell, a gas exhaust hole is arranged at the rear end of the lower shell, and a gas outlet is arranged at the rear end of the lower shell. A silencing sponge is installed in the lower shell in an embedded mode, concentrated side plates are arranged on the two sides of one end of the silencing sponge, a first sound absorption plate is arranged at the other end of the silencing sponge, a flow dividing groove is formed in the silencing sponge, one end of the flow dividing groove is open, and the other end of the flow dividing groove is open. According to the scheme, the problems that the interior of an existing air cylinder silencer is connected through a pipe, gas enters the pipe, silencing is carried out through a body made of resin materials, the silencing effect is poor, the cost is low, and the like are solved. And then the gas is exhausted, so that the silencing effect is poor.

Description

Technical Field

[0001] The utility model relates to the technical field of gas mufflers, and particularly relates to a gas filtering muffler. Background Technique

[0002] A gas muffler is a device used to reduce intake or exhaust noise, and can be used for cylinder muffling to reduce the noise during cylinder use;

[0003] For example, the Chinese authorized patent (a gas muffler) with the publication number CN218729886U: includes a bottom shell and an upper shell. A sound-absorbing sponge is arranged in the bottom shell, and the bottom shell and the upper shell are hermetically connected by bolts; a plurality of symmetrically arranged partition notches are formed through the sound-absorbing sponge, and flow-dividing partitions are embedded in the partition notches; one end wall of the bottom shell is hermetically and through-connected with an air inlet, and a plurality of exhaust ports are formed through the other side wall of the bottom shell; gas enters the bottom shell through the air inlet. Since the bottom shell is filled with the sound-absorbing sponge, when the gas enters the bottom shell, it impacts on the sound-absorbing sponge. While the sound-absorbing sponge guides the gas, it reduces the noise of the gas. At the same time, the flow-dividing partitions installed inside the sound-absorbing sponge through the partition notches can also guide the gas, enabling the gas to move in the bottom shell, and better enabling the sound-absorbing sponge to reduce the noise of the gas. At this time, the gas after noise reduction is discharged through the exhaust port, thereby improving the noise reduction effect of the device.

[0004] However, in the existing cylinder muffler, a single pipe is used for connection inside. The gas enters the pipe and relies on the resin material body for muffling, and then the gas is discharged. The muffling effect is poor; therefore, it does not meet the existing requirements. For this reason, we propose a gas filtering muffler. Content of the Utility Model

[0005] The purpose of the utility model is to provide a gas filtering muffler to solve the problem that in the existing cylinder muffler, a single pipe is used for connection inside, the gas enters the pipe, relies on the resin material body for muffling, and then the gas is discharged, resulting in a poor muffling effect as mentioned in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: a gas filtering muffler, including: a lower shell, an upper shell is arranged at the upper end of the lower shell, an air inlet is arranged at the front end of the lower shell, an exhaust hole is arranged at the rear end of the lower shell, a sound-absorbing sponge is embedded and installed inside the lower shell, concentrated side plates are arranged on both sides at one end of the sound-absorbing sponge, a first sound-absorbing plate is arranged at the other end of the sound-absorbing sponge, and a flow-dividing groove is arranged inside the sound-absorbing sponge, and the flow-dividing groove is in the form of an open end.

[0007] Preferably, a concentrated cavity is formed among the concentrated side plates, the lower shell and the sound-absorbing sponge, and the concentrated cavity communicates with the opening of the flow-dividing groove.

[0008] Preferably, a first fixing bolt is provided at one end of the centralized side plate, and second fixing bolts are provided at both ends of the first sound-absorbing plate. The centralized side plate and the first sound-absorbing plate are respectively threadedly fixed to the lower housing through the first fixing bolt and the second fixing bolt.

[0009] Preferably, an inner groove is provided on the lower surface of the upper housing, and a second sound-absorbing plate is provided inside the inner groove.

[0010] Preferably, fastener holes are provided on the upper surfaces of the corners of the lower housing, and single-headed fasteners are provided at the corners of the upper housing. One end of the single-headed fastener passes through the upper housing and is threadedly fixed to the fastener hole.

[0011] Preferably, a dust-proof net is provided outside the exhaust hole, a dust-proof net frame is provided outside the dust-proof net, and the corners of the dust-proof net frame are threadedly fixed to the lower housing through the provided threaded fasteners.

[0012] Preferably, fixed side plates are provided on both sides of the lower housing, and a reinforcing rib is provided at the center of the upper surface of the fixed side plate.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] 1. By providing a shunt groove with an open end inside the sound-absorbing sponge, the present utility model places the sound-absorbing sponge vertically between the centralized side plate and the first sound-absorbing plate. The centralized side plate and the first sound-absorbing plate play a role in fixing the sound-absorbing sponge to prevent it from moving. Moreover, a centralized cavity is formed among the centralized side plate, the lower housing, and the sound-absorbing sponge, which has an effect of collecting and guiding the gas. The gas enters the interior of the lower housing from the air inlet, and is guided into the sound-absorbing sponge and the shunt groove through the centralized cavity. Relying on the shunt groove, the gas is conveniently guided into the interior of the sound-absorbing sponge and then diffuses in all directions. Compared with the method of contacting the gas from one end of the sound-absorbing sponge for sound absorption, it is convenient to perform rapid sound absorption treatment on a large amount of gas, thereby improving the sound absorption efficiency. After the first-level sound absorption by the sound-absorbing sponge, the second-level sound absorption treatment is carried out by the first sound-absorbing plate, and then the gas is discharged from the exhaust hole, thus realizing multi-level sound absorption and improving the sound absorption effect. After covering the upper housing, the lower surface of the second sound-absorbing plate contacts the upper surfaces of the centralized side plate, the sound-absorbing sponge, and the first sound-absorbing plate, thereby also having a sound absorption effect on the upper housing and improving the overall sound absorption effect, solving the problem that in the existing cylinder muffler, a single pipe is used for connection inside, the gas enters the pipe, and the resin material body is relied on for sound absorption, and then the gas is discharged, resulting in poor sound absorption effect.

[0015] 2. By providing a dust-proof net outside the exhaust hole, a dust-proof net frame is arranged outside the dust-proof net, and the corners of the dust-proof net frame are threadedly fixed to the lower shell by threaded fasteners, which is convenient for disassembly, cleaning and replacement. The dust-proof net protects the exhaust hole, preventing sundries from entering the interior of the lower shell along the exhaust hole from the outside and affecting the sound absorption effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 is a schematic diagram of the internal structure of the lower shell of the present invention;

[0018] Figure 3 is a schematic diagram of the sound-absorbing sponge structure of the present invention;

[0019] Figure 4 is a schematic diagram of the bottom view structure of the upper shell of the present invention;

[0020] Figure 5 is a schematic diagram of the overall rear view structure of the present invention;

[0021] In the figure: 1. Lower shell; 2. Upper shell; 3. Air inlet; 4. Fixed side plate; 5. Single-headed fastener; 6. Sound-absorbing sponge; 7. Concentrating side plate; 8. First sound-absorbing plate; 9. First fixing bolt; 10. Second fixing bolt; 11. Shunt groove; 12. Inner groove; 13. Second sound-absorbing plate; 14. Exhaust hole; 15. Reinforcing rib; 16. Concentrating cavity; 17. Fastener hole; 18. Dust-proof net; 19. Threaded fastener; 20. Dust-proof net frame. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments.

[0023] Please refer to Figures 1-5 , an embodiment provided by the present invention: A gas filtration muffler, comprising: a lower shell 1, an upper shell 2 is arranged at the upper end of the lower shell 1, an air inlet 3 is arranged at the front end of the lower shell 1, an exhaust hole 14 is arranged at the rear end of the lower shell 1, a sound-absorbing sponge 6 is embedded and installed inside the lower shell 1, concentrating side plates 7 are arranged on both sides of one end of the sound-absorbing sponge 6, a first sound-absorbing plate 8 is arranged at the other end of the sound-absorbing sponge 6, a shunt groove 11 is arranged inside the sound-absorbing sponge 6, and the shunt groove 11 is in a form with one end open. A concentrating cavity 16 is formed between the concentrating side plate 7, the lower shell 1 and the sound-absorbing sponge 6, and the concentrating cavity 16 communicates with the opening of the shunt groove 11.

[0024] Gas enters the interior of the lower housing 1 from the air inlet 3, and the gas is guided into the sound-absorbing sponge 6 and the flow dividing groove 11 through the central cavity 16. Relying on the flow dividing groove 11, it is convenient to guide the gas into the interior of the sound-absorbing sponge 6, and then diffuse in all directions, facilitating the rapid sound absorption treatment of a large amount of gas, thereby improving the sound absorption efficiency. After the primary sound absorption by the sound-absorbing sponge 6, the secondary sound absorption treatment is carried out through the first sound-absorbing plate 8, and then discharged from the exhaust hole 14, thus realizing multi-stage sound absorption and improving the sound absorption effect.

[0025] Please refer to Figure 2 One end of the central side plate 7 is provided with a first fixing bolt 9, both ends of the first sound-absorbing plate 8 are provided with second fixing bolts 10, and the central side plate 7 and the first sound-absorbing plate 8 are respectively thread-fixed to the lower housing 1 through the first fixing bolt 9 and the second fixing bolt 10, facilitating the fixing and disassembly of the central side plate 7 and the first sound-absorbing plate 8, improving flexibility, and fixing the sound-absorbing sponge 6 through the central side plate 7 and the first sound-absorbing plate 8 to avoid deviation and improve stability.

[0026] Please refer to Figure 2 、 4 The lower surface of the upper housing 2 is provided with an inner groove 12, and a second sound-absorbing plate 13 is arranged inside the inner groove 12. The second sound-absorbing plate 13 is inserted into the inner groove 12 of the upper housing 2, and the upper housing 2 is covered. The lower surface of the second sound-absorbing plate 13 contacts the upper surfaces of the central side plate 7, the sound-absorbing sponge 6 and the first sound-absorbing plate 8, thereby also achieving a sound-absorbing effect on the upper housing 2 and improving the overall sound-absorbing effect.

[0027] Please refer to Figure 1 、 2 Fastening holes 17 are provided on the upper surfaces of the corners of the lower housing 1, single-headed fasteners 5 are provided at the corners of the upper housing 2, and one end of the single-headed fastener 5 passes through the upper housing 2 and is thread-fixed to the fastening hole 17, facilitating the fixing and disassembly of the upper housing 2.

[0028] Please refer to Figure 5 A dust-proof net 18 is arranged outside the exhaust hole 14, a dust-proof net frame 20 is arranged outside the dust-proof net 18, and the corners of the dust-proof net frame 20 are thread-fixed to the lower housing 1 through the provided threaded fasteners 19. The dust-proof net 18 is used to protect the exhaust hole 14 to prevent sundries from entering the interior of the lower housing 1 along the exhaust hole 14 from the outside and affecting the sound-absorbing effect.

[0029] Please refer to Figure 1 、 5, on both sides of the lower housing 1, fixed side plates 4 are provided. At the center of the upper surface of the fixed side plate 4, a reinforcing rib 15 is provided. The overall muffler is fixed by externally connecting fasteners through the fixed side plate 4. The compressive degree between the fixed side plate 4 and the lower housing 1 is increased through the reinforcing rib 15, improving the protection performance and making it not easy to be bent and damaged by force.

[0030] Working principle: During use, the concentrated side plate 7 and the first sound-absorbing plate 8 are respectively threadedly fixed to the lower housing 1 through the first fixing bolt 9 and the second fixing bolt 10. Then, the sound-absorbing sponge 6 is placed from top to bottom between the concentrated side plate 7 and the first sound-absorbing plate 8. The concentrated side plate 7 and the first sound-absorbing plate 8 play a role in fixing the sound-absorbing sponge 6 to prevent it from moving. Moreover, a concentrated cavity 16 is formed among the concentrated side plate 7, the lower housing 1, and the sound-absorbing sponge 6, which has an effect of collecting and guiding the gas. The second sound-absorbing plate 13 is inserted into the inner groove 12 of the upper housing 2, and the upper housing 2 is covered. The lower surface of the second sound-absorbing plate 13 contacts the upper surfaces of the concentrated side plate 7, the sound-absorbing sponge 6, and the first sound-absorbing plate 8, thereby also achieving a sound-absorbing effect on the upper housing 2, and thus improving the overall sound-absorbing effect. The gas enters the lower housing 1 from the air inlet 3, and is guided by the concentrated cavity 16 to the sound-absorbing sponge 6 and the diversion groove 11. Relying on the diversion groove 11, it is convenient to guide the gas into the sound-absorbing sponge 6, and then diffuse around, facilitating the rapid sound-absorbing treatment of a large amount of gas, thereby improving the sound-absorbing efficiency. After the first-stage sound absorption by the sound-absorbing sponge 6, the second-stage sound absorption treatment is carried out through the first sound-absorbing plate 8, and then it is discharged from the exhaust hole 14, thus realizing multi-stage sound absorption and improving the sound-absorbing effect. The dust-proof net 18 is used to protect the exhaust hole 14, preventing sundries from entering the lower housing 1 from the outside along the exhaust hole 14 and affecting the sound-absorbing effect.

[0031] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be encompassed by the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

Claims

1. A gas filter silencer, comprising a lower shell (1), an upper shell (2) being arranged at the upper end of the lower shell (1), an air inlet (3) being arranged at the front end of the lower shell (1), and an exhaust hole (14) being arranged at the rear end of the lower shell (1), characterized in that: A sound-absorbing sponge (6) is embedded inside the lower shell (1), and a centralizing side plate (7) is provided on both sides of one end of the sound-absorbing sponge (6). A first sound-absorbing plate (8) is provided at the other end of the sound-absorbing sponge (6). A diversion groove (11) is provided inside the sound-absorbing sponge (6), and the diversion groove (11) is open at one end.

2. A gas filter silencer according to claim 1, characterized in that: A centralizing chamber (16) is formed between the centralizing side plate (7), the lower shell (1) and the sound-absorbing sponge (6), and the centralizing chamber (16) is in communication with the opening of the diversion groove (11).

3. A gas filter silencer according to claim 1, characterized in that: A first fixing bolt (9) is provided at one end of the centralizing side plate (7), and second fixing bolts (10) are provided at both ends of the first sound absorbing plate (8), and the centralizing side plate (7) and the first sound absorbing plate (8) are respectively threadedly fixed to the lower shell (1) via the first fixing bolt (9) and the second fixing bolt (10).

4. A gas filter silencer according to claim 1, characterized in that: An inner groove (12) is provided on the lower surface of the upper shell (2), and a second sound absorbing plate (13) is provided inside the inner groove (12).

5. A gas filter silencer according to claim 1, characterized in that: The upper surfaces of the corners of the lower shell (1) are provided with fastener holes (17), the corners of the upper shell (2) are provided with single-head fasteners (5), and one end of the single-head fastener (5) passes through the upper shell (2) and is threadedly fixed to the fastener hole (17).

6. A gas filter silencer according to claim 1, characterized in that: A dustproof net (18) is arranged outside the exhaust hole (14), a dustproof net frame (20) is arranged outside the dustproof net (18), and the corners of the dustproof net frame (20) are threadedly fixed to the lower shell (1) via threaded fasteners (19).

7. A gas filter silencer according to claim 1, characterized in that: Fixed side plates (4) are provided on both sides of the lower shell (1), and reinforcing ribs (15) are provided at the center of the upper surface of the fixed side plates (4).

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