CN218207238U - Silencer with vacuum cavity - Google Patents

Abstract

The utility model relates to a silencer with a vacuum cavity, belonging to the technical field of silencers; the silencer body comprises a cylinder wall and is characterized by also comprising a first shell and a second shell; the shell is sleeved on the periphery of the silencer body, a first cavity is formed between the shell and the barrel wall, and a sound insulation layer is arranged in the first cavity; the second shell and the first shell form a second cavity, and the second cavity is a vacuum cavity; the utility model discloses a set up the first cavity that has the sound insulating layer and vacuum environment's second cavity outside the silencer body, the air current gets into this internal back of silencer, and the noise is reduced through first cavity, passes through the vacuum environment in the second cavity again, and vacuum environment sound can't be propagated, noise abatement pollutes, just the utility model discloses still be provided with the heat sink in the section of thick bamboo wall outside and cool down the processing to the air current, simple structure, and the cost is lower.

Description

Silencer with vacuum cavity

Technical Field

The utility model belongs to the technical field of the silencer technique and specifically relates to a take silencer of vacuum cavity.

Background

At present, mufflers are widely used in industrial production as devices for reducing noise of gas flow, and the types of mufflers are mainly classified into three types: the basic structures of the resistance type silencer, the resistance type silencer and the impedance combined silencer are outer shell and internal silencing structures, and the differences mainly are the differences of internal silencing mechanisms. In order to better eliminate noise, it is a common practice to increase the thickness and material of the outer shell to isolate noise to a certain extent, and the cost is increased due to the increase of the thickness and material of the outer shell.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems in the background art, the present invention provides a muffler with a vacuum chamber.

The utility model provides a pair of take silencer of vacuum cavity adopts following technical scheme: a silencer with a vacuum cavity comprises a silencer body, a first shell and a second shell, wherein the silencer body comprises a cylinder wall; the shell is sleeved on the periphery of the silencer body, the first shell and the barrel wall form a first cavity, and a sound insulation layer is arranged in the first cavity; the shell two sleeves are arranged on the periphery of the shell I, the shell II and the shell I form a second cavity, and the second cavity is a vacuum cavity.

By adopting the technical scheme, sound cannot be transmitted in a vacuum environment, air flow enters the silencer, noise passes through the sound insulation layer of the first cavity, the noise is reduced and enters the second cavity, and the vacuum cavity blocks the transmission of the sound.

Preferably, the sound insulation layer is made of centrifugal glass wool.

By adopting the centrifugal glass wool, the centrifugal glass wool is flame-retardant, corrosion-resistant and low in moisture absorption rate, and can generate good sound absorption and noise reduction effects.

Preferably, the sound insulation layer is mineral wool.

By adopting the mineral wool, the mineral wool has light texture, small heat conductivity coefficient, corrosion resistance, high stability and good sound absorption performance.

Preferably, the second shell is provided with an air outlet, the air outlet is communicated with the second cavity, and the air outlet is connected with vacuum exhaust equipment through an air pipe. By adopting the technical scheme, the vacuum exhaust equipment is started, the air in the second cavity is exhausted through the air outlet, and the vacuum environment is formed after the air in the second cavity is exhausted completely.

Preferably, the silencer further comprises a cooling device, the cooling device comprises a cooling pipe and a condensing agent, the condensing agent is filled in the cooling pipe in a sealing mode, and the condensing pipe is sleeved on the periphery of the cylinder wall.

To sum up, the utility model discloses following useful technological effect has:

1. the utility model discloses a set up the first cavity that has the sound insulating layer and the second cavity of vacuum environment outside the silencer body, after the air current got into the silencer body, the noise was through first cavity, was cut down, and then passes through the vacuum environment in the second cavity, and vacuum environment sound can not spread, has played certain isolated effect to the noise;

2. the utility model is provided with a cooling device to cool the air flow entering the silencer, thereby achieving the purpose of cooling;

3. the utility model discloses simple structure, it is with low costs and cooling noise reduction is effectual.

Drawings

FIG. 1 is a schematic view of the present invention;

FIG. 2 is an enlarged schematic view of portion A of FIG. 1;

FIG. 3 is a schematic view of the muffler structure;

fig. 4 is a schematic right view of the present invention;

fig. 5 is an enlarged schematic view of a portion B of fig. 4.

Description of the reference numerals:

1. a muffler body; 11. a cylinder wall; 12. an air inlet; 13. an air outlet;

2. a first shell;

3. a second shell; 31. an air outlet;

4. a first cavity; 41. a sound insulating layer;

5. a second cavity;

6. an air tube;

7. a vacuum exhaust device;

8. a cooling device; 81. a cooling pipe; 82. a condensing agent.

Detailed Description

The present invention will be described in further detail with reference to fig. 1 to 5.

The embodiment of the utility model discloses take silencer of vacuum cavity.

Example 1

As shown in fig. 1, a muffler with a vacuum chamber includes a muffler body 1, a first shell 2, a second shell 3, a vacuum exhaust apparatus 7, and a temperature reducing device 8.

As shown in fig. 1 and 2, the muffler body 1 includes a cylinder wall 11, an air inlet 12 and an air outlet 13, a first shell 2 is sleeved on the periphery of the muffler body 1, the first shell 2 and the cylinder wall 11 form a first cavity 4, a sound insulation layer 41 is arranged in the first cavity 4, the sound insulation layer 41 is made of centrifugal glass wool, and the centrifugal glass wool is flame-retardant, corrosion-resistant, low in moisture absorption rate, good in sound absorption and noise reduction effects.

As shown in fig. 1 and 2, the second shell 3 is sleeved on the periphery of the first shell 2, the second shell 3 and the first shell 2 form a second cavity 5, an air outlet 31 is formed in the second shell 3, the air outlet 31 is communicated with the second cavity 5, the air outlet 31 is connected with the vacuum exhaust device 7 through an air pipe 6, and air in the second cavity 5 is pumped out, so that the second cavity 5 is a vacuum cavity, sound cannot be transmitted in a vacuum environment, and noise pollution can be effectively reduced.

As shown in fig. 3, 4 and 5, the cooling device 8 includes a cooling pipe 81 and a condensing agent 82, the condensing agent 82 is hermetically filled in the cooling pipe 81, and the cooling pipe 81 is sleeved on the periphery of the cylinder wall 11 to cool the air flow.

Example 2

The sound insulation layer 41 is made of mineral wool, and the mineral wool is light in weight, small in heat conductivity coefficient, corrosion-resistant, high in stability and good in sound absorption performance.

The embodiment of the utility model provides a working method of silencer of area vacuum cavity does: the air in the second cavity 5 is pumped out through the vacuum exhaust equipment 7, so that the second cavity 5 is in a vacuum environment, the air flow enters the silencer body 1 from the air inlet 12, noise is reduced through the sound insulation layer 41 in the first cavity 4, the noise cannot be transmitted in the second cavity 5, the air flow passes through the interior of the silencer body 1, the cooling device 8 on the periphery of the cylinder wall 11 cools the air flow, and the air flow is exhausted from the air outlet 13.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.

Above is the preferred embodiment of the utility model, not limit according to this the utility model discloses a protection scope, the event: all equivalent changes made according to the structure, shape and principle of the utility model should be covered within the protection scope of the utility model.

Claims (5)

1. A silencer with a vacuum cavity comprises a silencer body (1), wherein the silencer body (1) comprises a cylinder wall (11), and is characterized by further comprising a first shell (2) and a second shell (3);

the first shell (2) is sleeved on the periphery of the silencer body (1), the first shell (2) and the cylinder wall (11) form a first cavity (4), and a sound insulation layer (41) is arranged in the first cavity (4);

the second shell (3) is sleeved on the periphery of the first shell (2), the second shell (3) and the first shell (2) form a second cavity (5), and the second cavity (5) is a vacuum cavity.

2. The muffler with vacuum chamber according to claim 1, wherein: the sound insulation layer (41) is made of centrifugal glass wool.

3. The muffler with vacuum chamber according to claim 1, wherein: the sound insulation layer (41) is made of mineral wool.

4. The muffler with vacuum chamber according to claim 1, wherein: and a gas outlet (31) is formed in the second shell (3), the gas outlet (31) is communicated with the second cavity (5), and the gas outlet (31) is connected with vacuum exhaust equipment (7) through a gas pipe (6).

5. The muffler with vacuum chamber according to claim 1, wherein: the silencer also comprises a cooling device, the cooling device comprises a cooling pipe (81) and a condensing agent (82), the condensing agent (82) is filled in the cooling pipe (81) in a sealing mode, and the cooling pipe (81) is sleeved on the periphery of the cylinder wall (11).

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