CN222084659U

CN222084659U - Mute muffler

Info

Publication number: CN222084659U
Application number: CN202420426677.0U
Authority: CN
Inventors: 陈建伟; 王云贺; 孙松江
Original assignee: Shaoxing Hongan Machinery Co ltd
Current assignee: Shaoxing Hongan Machinery Co ltd
Priority date: 2024-03-06
Filing date: 2024-03-06
Publication date: 2024-11-29
Anticipated expiration: 2034-03-06

Abstract

The utility model discloses a silent muffler, comprising a shell, an inner cavity of the shell is installed with a partition, and the inner cavity of the shell is divided into a first cavity and a second cavity by the partition, an air intake pipe connected to the first cavity is installed on the outer surface of one side of the shell, an exhaust pipe connected to the second cavity is installed on the outer surface of the other side of the shell, a first muffler corresponding to the air intake pipe is installed in the first cavity, a second muffler corresponding to the exhaust pipe is installed in the second cavity, at least one layer plate is installed on the outer tube wall of the first muffler and the outer tube wall of the second muffler, and a plurality of diffusion holes are opened on the tube wall of the first muffler and the second muffler. In the utility model, the noise in the gas is absorbed by the first muffler and the second muffler, and the airflow is dispersed through the diffusion holes to achieve sound dispersion; at the same time, the airflow is layered by the layer plate to improve the airflow dispersion effect, and the airflow is depressurized by the blocking of the layer plate and the increase of the stroke to improve the noise reduction effect.

Description

Mute muffler

Technical Field

The utility model relates to the technical field of silencers, in particular to a mute silencer.

Background

Since the vacuum pump generates a large noise during the operation and exhaustion, a muffler is generally added to the vacuum pump in order to reduce the noise. The traditional muffler generally adopts a flow control hole muffler pipe with smaller diameter to directly introduce noise into the muffler, so that the noise reduction capability is weak, and the muffler effect is limited.

Disclosure of utility model

The utility model aims to overcome the defects of the prior art, and provides a mute muffler which is used for absorbing noise in gas through a first mute pipe and a second mute pipe, dispersing the gas flow through a diffusion hole to realize sound dispersion, layering the gas flow through a laminate to improve the gas flow dispersing effect, and reducing the pressure of the gas flow through the blocking of the laminate and the increase of the stroke to improve the noise reduction effect.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

The utility model provides a silence silencer, includes the casing, the baffle is installed to the inner chamber of casing to separate into first cavity and second cavity with the inner chamber of casing through the baffle, the intake pipe that is linked together with first cavity is installed to the surface mounting of casing one side, the blast pipe that is linked together with the second cavity is installed to the surface mounting of casing opposite side, install the first amortization pipe corresponding with the intake pipe in the first cavity, install the second amortization pipe corresponding with the blast pipe in the second cavity, the through-hole has been seted up to the baffle, first amortization pipe is linked together with the second amortization pipe through the through-hole, at least one plywood is installed to the outer pipe wall of first amortization pipe, the outer pipe wall of second amortization pipe, a plurality of diffusion holes have all been seted up to the pipe wall of first amortization pipe and second amortization pipe, the pipe diameter of first amortization pipe is less than the pipe diameter of second amortization pipe.

Further, two laminates are arranged on the outer pipe wall of the first silencing pipe and are respectively positioned on two sides of the first silencing pipe.

Further, two laminates are arranged on the outer pipe wall of the second silencing pipe and are respectively positioned on two sides of the second silencing pipe.

Further, the laminate is of a circular ring structure, and the outer diameter of the laminate is smaller than the inner diameter of the shell.

Further, be equipped with first honeycomb duct between intake pipe and the first amortization pipe, one side of first honeycomb duct towards the intake pipe corresponds with the intake pipe to install in the internal surface of casing one side, one side of first honeycomb duct towards first amortization pipe corresponds with first amortization pipe, and extends to in the first amortization pipe, the pipe diameter of one side of first honeycomb duct towards the intake pipe is greater than its pipe diameter towards one side of first amortization pipe.

Further, one side of the first silencing pipe, which is back to the air inlet pipe, is arranged on the partition plate and covers the through hole.

Further, a second flow guide pipe is arranged between the partition plate and the second silencing pipe, the second flow guide pipe is installed on the partition plate towards one side of the partition plate and is coated with the through hole, one side of the second flow guide pipe towards the second silencing pipe corresponds to the second silencing pipe, the pipe diameter of one side of the second flow guide pipe towards the partition plate is larger than that of one side of the second silencing pipe, and the pipe diameter of one side of the second flow guide pipe towards the second silencing pipe is smaller than that of the second silencing pipe.

Further, a third flow guide pipe is arranged between the second flow guide pipe and the second silencing pipe, the pipe diameter of one side of the third flow guide pipe, which faces the second silencing pipe, is smaller than the pipe diameter of one side of the third flow guide pipe, which faces the second silencing pipe, the third flow guide pipe is connected with the second silencing pipe, and one side of the second flow guide pipe, which faces the second silencing pipe, extends into the third flow guide pipe.

Further, a notch corresponding to the exhaust pipe is arranged on one side, facing away from the partition plate, of the second silencing pipe, and the exhaust pipe extends into the second cavity.

Further, the first silencing pipe and the second silencing pipe are sound-absorbing cotton pipes.

The beneficial effects of the utility model are as follows:

1. In the utility model, noise in the gas is absorbed through the first silencing pipe and the second silencing pipe, the air flow is dispersed through the diffusion holes to realize sound dispersion, the air flow is layered through the laminate to improve the air flow dispersing effect, and the air flow is depressurized through the barrier of the laminate and the increase of the stroke to improve the noise reduction effect.

2. In the utility model, the pressure of the gas is reduced through abrupt change of the section of the pipeline so as to eliminate noise, reduce noise and realize good noise elimination effect.

Drawings

Fig. 1 is a schematic structural view of a mute muffler in the present embodiment;

FIG. 2 is a schematic cross-sectional view of the muffler in the present embodiment;

FIG. 3 is a schematic view of a structure of a first muffler pipe according to the present embodiment;

fig. 4 is a schematic structural view of the second muffler pipe in the present embodiment.

The device comprises a shell 1, a partition plate 2, a first cavity 3, a second cavity 4, an air inlet pipe 5, an air outlet pipe 6, a first silencing pipe 7, a second silencing pipe 8, a through hole 9, a laminate 10, diffusion holes 11, a first guide pipe 12, a second guide pipe 13, a third guide pipe 14 and a notch 15.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The embodiment of the mute muffler is shown in the figures 1-4, and comprises a shell 1, wherein the shell 1 is of a tubular structure, two sides of the shell are closed, the shell 1 is provided with an inner cavity, a partition plate 2 is arranged in the inner cavity of the shell 1, the inner cavity of the shell 1 is divided into a first cavity 3 and a second cavity 4 through the partition plate 2, an air inlet pipe 5 communicated with the first cavity 3 is arranged on the outer surface of one side of the shell 1, the air inlet pipe 5 is used for being connected with the exhaust end of a vacuum pump, an exhaust pipe 6 communicated with the second cavity 4 is arranged on the outer surface of the other side of the shell 1, a first mute pipe 7 corresponding to the air inlet pipe 5 is arranged in the first cavity 3, a second mute pipe 8 corresponding to the exhaust pipe 6 is arranged in the second cavity 4, a through hole 9 is formed in the partition plate 2, the first mute pipe 7 is communicated with the second mute pipe 8 through the partition plate 9, at least one layer 10 is arranged on the outer pipe wall of the first mute pipe 7 and the pipe 8, a plurality of diffusion holes 11 are formed in the pipe walls of the first mute pipe 7 and the second mute pipe 8, and the pipe diameter is smaller than the second mute pipe 8.

Wherein, the first silencing pipe 7 and the second silencing pipe 8 are hollow pipes with noise silencing function, and two sides of the hollow pipes are open; the gas discharged by the vacuum pump enters the first silencing pipe 7 through the gas inlet pipe 5, a part of gas enters the second silencing pipe 8 through the through hole 9 under the action of the gas flow, the other part of gas enters the first cavity 3 (outside the first silencing pipe 7) through the diffusion hole 11 on the first silencing pipe 7, when the part of gas flows through the diffusion hole 11, the diffusion hole 11 disperses the gas flow and is not as a whole, so as to realize sound dispersion, the first silencing pipe 7 is utilized to absorb noise in the gas, the dispersed gas flows from bottom to top in the first cavity 3, returns to the first silencing pipe 7 from one side of the gas inlet pipe 5 through the first silencing pipe 7, and further disperses the gas flow through the first cavity 3 by the laminate 10 in the gas backflow process, and simultaneously reduces the noise by the blocking and the increasing of the travel of the laminate 10, and the gas flow is depressurized by the diffusion hole 11 when the part of the gas flows through the diffusion hole 7, the dispersed gas flows into the second silencing pipe 8 from bottom to one side of the second silencing pipe 8 through the diffusion hole 11 under the action of the gas flow, and then flows back to the second silencing pipe 8 from one side of the second silencing pipe 4 to the second silencing pipe 8, and further flows into the second silencing pipe 4 through the diffusion hole 11 in the second silencing pipe 8, and then flows back to the second silencing pipe 8 in the second cavity through the second silencing pipe 8, and further flow is dispersed through the laminate 4, at the same time, the air flow is depressurized to reduce noise by the blocking of the laminate 10 and the increase of the stroke, and the other part of the air is discharged through the exhaust pipe 6.

Preferably, the first muffler pipe 7 and the second muffler pipe 8 are sound absorbing cotton, and noise in the gas is absorbed by the sound absorbing property of the sound absorbing cotton.

Preferably, the outer pipe wall of the first silencing pipe 7 is provided with two laminates 10 which are respectively positioned at two sides of the first silencing pipe 7, the outer pipe wall of the second silencing pipe 8 is provided with two laminates 10 which are respectively positioned at two sides of the second silencing pipe 8, and the first cavity 3 and the second cavity 4 are respectively divided into three layers by arranging the laminates 10 so as to improve the dispersion effect of air flow and the flow stroke, thereby improving the noise reduction effect.

Preferably, the laminate 10 has a circular ring structure and is respectively sleeved on the outer pipe walls of the first silencer pipe 7 and the second silencer pipe 8, and the outer diameter of the laminate 10 is smaller than the inner diameter of the shell 1. The laminate 10 adopts a circular ring structure to make the air flow uniform, thereby achieving the noise reduction effect.

Further, as shown in fig. 2, a first flow guiding pipe 12 is arranged between the air inlet pipe 5 and the first silencing pipe 7, the first flow guiding pipe 12 is in a truncated cone structure, the pipe diameter of one side of the first flow guiding pipe 12 facing the air inlet pipe 5 is larger than the pipe diameter of one side of the first flow guiding pipe facing the first silencing pipe 7, one side of the first flow guiding pipe 12 facing the air inlet pipe 5 corresponds to the air inlet pipe 5 and is arranged on the inner surface of one side of the shell 1, the pipe diameter of one side of the first flow guiding pipe 12 facing the air inlet pipe 5 is larger than the pipe diameter of the air inlet pipe 5, one side of the first flow guiding pipe 12 facing the first silencing pipe 7 corresponds to the first silencing pipe 7 and extends into the first silencing pipe 7, namely, the pipe diameter of one side of the first flow guiding pipe 12 facing the first silencing pipe 7 is smaller than the pipe diameter of the first silencing pipe 7.

The first guide pipe 12 with the truncated cone structure is arranged, so that gas exhausted by the vacuum pump can be conveniently introduced, the pressure of the gas is reduced by utilizing abrupt change of the section of the pipeline to carry out noise elimination, the noise is reduced, and the gas which is convenient to flow back enters the first silencing pipe 7.

Further, the first muffler pipe 7 is installed on the partition plate 2 at a side facing away from the intake pipe 5, and covers the through hole 9.

As shown in fig. 2, a second flow guiding pipe 13 is arranged between the partition plate 2 and the second silencing pipe 8, the second flow guiding pipe 13 is in a circular truncated cone structure, the pipe diameter of one side of the second flow guiding pipe 13 facing the partition plate 2 is larger than the pipe diameter of one side of the second silencing pipe 8 facing the second flow guiding pipe, the second flow guiding pipe 13 is arranged on the partition plate 2 and covers the through hole 9, namely, the pipe diameter of one side of the second flow guiding pipe 13 facing the partition plate 2 is larger than the aperture of the through hole 9, one side of the second flow guiding pipe 13 facing the second silencing pipe 8 corresponds to the second silencing pipe 8, and the pipe diameter of one side of the second flow guiding pipe 13 facing the second silencing pipe 8 is smaller than the pipe diameter of the second silencing pipe 8.

The second flow guide pipe 13 with a truncated cone structure is arranged, so that the gas in the first silencing pipe 7 can be conveniently introduced, the gas is depressurized by utilizing abrupt change of the section of the pipeline to be silencing, noise is reduced, and the gas which is convenient to flow back enters the second silencing pipe 8.

Further, as shown in fig. 2 and 4, a third flow guiding pipe 14 is arranged between the second flow guiding pipe 13 and the second silencing pipe 8, the third flow guiding pipe 14 has a truncated cone structure, the pipe diameter of one side of the third flow guiding pipe 14 facing the second silencing pipe 8 is smaller than the pipe diameter of one side of the third flow guiding pipe facing the second flow guiding pipe 13, one side of the third flow guiding pipe 14 facing the second silencing pipe 8 is connected to the second silencing pipe 8, one side of the second flow guiding pipe 13 facing the second silencing pipe 8 extends into the third flow guiding pipe 14, namely, the pipe diameter of one side of the third flow guiding pipe 14 facing the second flow guiding pipe 13 is larger than the pipe diameter of one side of the second flow guiding pipe 13 facing the second silencing pipe 8.

The third flow guide pipe 14 with a truncated cone structure is arranged, so that firstly, the pressure of the gas is reduced by utilizing abrupt change of the section of the pipeline to carry out noise elimination and reduce noise, and secondly, the gas which is convenient for backflow enters the second noise elimination pipe 8.

Preferably, the side of the second silencing pipe 8 facing away from the partition plate 2 is provided with a notch corresponding to the exhaust pipe 6, and the exhaust pipe 6 extends into the second cavity 4.

The above description is only a preferred embodiment of the present utility model, and the protection scope of the present utility model is not limited to the above examples, and all technical solutions belonging to the concept of the present utility model belong to the protection scope of the present utility model. It should be noted that modifications and adaptations to the present utility model may occur to one skilled in the art without departing from the principles of the present utility model and are intended to be within the scope of the present utility model.

Claims

1. The utility model provides a silence silencer, includes casing (1), its characterized in that, baffle (2) are installed to the inner chamber of casing (1) to separate into first cavity (3) and second cavity (4) with the inner chamber of casing (1) through baffle (2), the surface mounting of casing (1) one side has intake pipe (5) that are linked together with first cavity (3), the blast pipe (6) that are linked together with second cavity (4) are installed to the surface mounting of casing (1) opposite side, install first muffler pipe (7) corresponding with intake pipe (5) in first cavity (3), install second muffler pipe (8) corresponding with blast pipe (6) in second cavity (4), through-hole (9) have been seted up to baffle (2), outer pipe wall, second muffler pipe (8) of first muffler pipe (7) are linked together with second muffler pipe (8) through-hole (9), at least one muffler pipe (10) are installed to the wall of second pipe (8), first muffler pipe (7) and second pipe wall (8) have the equal plywood of second pipe wall (8) to be seted up.

2. A silence muffler according to claim 1, characterized in that the outer pipe wall of the first silencer duct (7) is provided with two laminates (10) which are located on both sides of the first silencer duct (7).

3. A silence muffler according to claim 1, characterized in that the outer pipe wall of the second muffler pipe (8) is provided with two laminates (10) on both sides of the second muffler pipe (8).

4. A silence muffler according to claim 1, characterized in that the laminate (10) is of annular configuration and that the outer diameter of the laminate (10) is smaller than the inner diameter of the housing (1).

5. The mute muffler as claimed in claim 1, wherein a first flow guiding pipe (12) is arranged between the air inlet pipe (5) and the first mute pipe (7), one side of the first flow guiding pipe (12) facing the air inlet pipe (5) corresponds to the air inlet pipe (5) and is arranged on the inner surface of one side of the shell (1), one side of the first flow guiding pipe (12) facing the first mute pipe (7) corresponds to the first mute pipe (7) and extends into the first mute pipe (7), and the pipe diameter of one side of the first flow guiding pipe (12) facing the air inlet pipe (5) is larger than the pipe diameter of one side of the first mute pipe (7).

6. A silence muffler according to claim 1, characterized in that the side of the first silencing tube (7) facing away from the inlet tube (5) is mounted to the partition (2) and covers the through hole (9).

7. The mute muffler as claimed in claim 1, wherein a second flow guiding pipe (13) is arranged between the partition plate (2) and the second mute pipe (8), the second flow guiding pipe (13) is installed on the partition plate (2) towards one side of the partition plate (2) and covers the through hole (9), one side of the second flow guiding pipe (13) towards the second mute pipe (8) corresponds to the second mute pipe (8), the pipe diameter of one side of the second flow guiding pipe (13) towards the partition plate (2) is larger than the pipe diameter of one side of the second mute pipe (8), and the pipe diameter of one side of the second flow guiding pipe (13) towards the second mute pipe (8) is smaller than the pipe diameter of the second mute pipe (8).

8. The mute muffler as claimed in claim 7, wherein a third flow guiding pipe (14) is arranged between the second flow guiding pipe (13) and the second mute pipe (8), the pipe diameter of one side of the third flow guiding pipe (14) facing the second mute pipe (8) is smaller than the pipe diameter of one side of the third flow guiding pipe facing the second mute pipe (13), one side of the third flow guiding pipe (14) facing the second mute pipe (8) is connected to the second mute pipe (8), and one side of the second flow guiding pipe (13) facing the second mute pipe (8) extends into the third flow guiding pipe (14).

9. A silence muffler according to claim 1, characterized in that the side of the second silencing tube (8) facing away from the partition (2) is provided with a gap corresponding to the exhaust tube (6), which exhaust tube (6) extends into the second chamber (4).

10. A silence muffler according to claim 1, characterized in that the first (7) and second (8) silencing tubes are sound absorbing cotton tubes.