CN218863578U

CN218863578U - Silencer

Info

Publication number: CN218863578U
Application number: CN202222359659.9U
Authority: CN
Inventors: 郭克亚
Original assignee: Dongguan Mingchuang Transmission Technology Co ltd
Current assignee: Dongguan Mingchuang Transmission Technology Co ltd
Priority date: 2022-09-06
Filing date: 2022-09-06
Publication date: 2023-04-14
Anticipated expiration: 2032-09-06

Abstract

The invention discloses a silencer, wherein an air inlet hole, a beam device and an exhaust hole are respectively arranged on a shell, the beam device is arranged between the air inlet hole and the exhaust hole, the shell is separated into two cavities by the beam device, the first cavity is communicated with the air inlet hole, and the second cavity is communicated with the exhaust hole; the beam current device is provided with a microporous filtering device, the filtering precision of the microporous filtering device is set between 20 micrometers and 0.1 micrometer, and the filtering area of the microporous filtering device can be set according to the requirement; when high-speed airflow enters the first cavity through the air inlet, the high-speed airflow enters the second cavity through the beam device and is exhausted from the exhaust hole. The invention can be used for various exhaust devices such as engines, air compressors, electromagnetic valves, vacuum valves, high-pressure boilers, high-pressure air tanks, stamping equipment, air cylinders, electromagnetic valves, vacuum valves, pressure relief valves and the like, and the fields of various automatic equipment, pneumatic tools and the like.

Description

A kind of muffler

Technical Field

The utility model relates to a high-speed air current amortization technical field, concretely relates to control technology of muffler (silencer).

Background

The existing silencers (silencers) are various in types, mainly comprise a resistance silencer, a resistance composite silencer, a micropunch plate silencer, a small hole silencer and the like, and utilize a pipeline with a sound absorption lining or noise reduction devices with suddenly changed cross sections and the like to attenuate noise in the pipeline; due to the impact of high-speed airflow on sound-absorbing filler, moisture permeation and the like, the silencer has high failure rate and poor silencing effect, which is a design difficulty of silencers all the time. Along with scientific and technological development, intelligent manufacturing and operational environment's improvement, the pneumatic element quantity on the industrial automation equipment increases rapidly, and there is the potential safety hazard to the equipment circuit in the water and the oil in the pneumatic element emission waste gas, and the puzzlement that the operational environment brought is more and more serious for pneumatic element's noise. In order to continue to advance and develop the industry, there is a need to further improve and improve the technology and performance of mufflers.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is that the shell is separated into a first cavity and a second cavity by a beam device with the micropore filtration precision of 20-0.1 micron, the first cavity is communicated with an air inlet, and the second cavity is communicated with an exhaust hole; the high-speed airflow is connected into the air inlet, enters the second cavity through the beam device after entering the first cavity and is discharged from the exhaust hole, and the noise and pollution reducing function is achieved.

The utility model discloses a solve the technical scheme that above-mentioned technical problem adopted and be:

a silencer comprises a shell, at least one air inlet hole, at least one beam device and at least one exhaust hole, wherein the air inlet hole, the beam device and the exhaust hole are respectively arranged on the shell, the beam device is arranged between the air inlet hole and the exhaust hole, the shell is separated into at least two cavities by the beam device, the first cavity is communicated with the air inlet hole, and the second cavity is communicated with the exhaust hole; the beam device is provided with a microporous filtering device, the filtering precision of the microporous filtering device is set between 20 micrometers and 0.1 micrometer, and the filtering area of the microporous filtering device can be set according to the requirement; when high-speed airflow enters the first cavity through the air inlet, the high-speed airflow enters the second cavity through the beam device and is exhausted from at least one exhaust hole. The noise and pollution reduction function is realized.

The silencer further comprises an air inlet internal thread (or an air inlet external thread) and an air outlet internal thread (or an air outlet external thread), the air inlet internal thread (or the air inlet external thread) is arranged on the shell of the air inlet hole, and the air outlet internal thread (or the air outlet external thread) is arranged on the shell of the air outlet hole.

The silencer is characterized in that the air inlet hole, the beam current device and the exhaust hole are respectively arranged on the shell, the beam current device is adjacently arranged on the inner side or the outer side of the shell (or the shell is arranged on the inner side and the outer side of the beam current device), and the beam current device is respectively communicated with the air inlet hole and the exhaust hole.

The silencer, wherein the shell includes inner ring and outer loop, and a plurality of the exhaust hole is established the inner ring with on the outer loop, the beam device sets up in the middle of the inner ring with the outer loop.

The silencer is characterized in that the air inlet is arranged on the shell, the shell is fixedly connected with the beam current device, the N exhaust holes are arranged on the beam current device, the filtering precision of the N exhaust holes is set between 20 micrometers and 0.1 micrometer, the filtering area of the N exhaust holes can be set according to requirements, the air inlet and the exhaust holes are in a communicated state, a first cavity is formed inside the beam current device, and a second cavity is formed outside the beam current device; and after the high-speed airflow is input from the air inlet, the high-speed airflow is exhausted through the air outlet on the beam current device.

The muffler, wherein the beam current device further comprises an air inlet end and an air outlet end, and the housing further comprises at least one end cover; the air inlet end is communicated with the air inlet hole, and the air outlet end is communicated with the air outlet hole. The shell is connected with a first end cover, the first end cover is respectively provided with the air inlet and the exhaust hole, or the first end cover is provided with the air inlet and the shell is provided with the exhaust hole, the beam current device is respectively connected with the shell and the first end cover, or any one of the two elements of the shell and the first end cover is connected with the beam current device; or the shell is respectively connected with the first end cover and the second end cover, the first end cover is provided with the air inlet, the second end cover is provided with the exhaust hole, the beam current device is respectively connected with the first end cover and the second end cover, or any one of the first end cover and the second end cover is connected with the beam current device.

The silencer is characterized in that the beam device is of a hollow cylindrical structure, two ends of the hollow cylindrical structure are both open ports and are connected with the shell, so that a first cavity and a second cavity are formed between the hollow cylindrical structure and the shell, any one of the first cavity and the second cavity is communicated with the air inlet, and the other one of the first cavity and the second cavity is communicated with the air outlet.

The silencer is characterized in that one end of the hollow cylindrical structure is an open end, the other end of the hollow cylindrical structure is a closed end, the open end is connected with the shell (or the first end cover), a first cavity and a second cavity are formed between the hollow cylindrical structure and the shell, any one of the first cavity and the second cavity is communicated with the air inlet, and the other element is communicated with the air outlet.

The silencer, wherein the one end of hollow cylinder structure is established to open end, the other end and is established to the blind end, open end is served and is set up first external screw thread, set up first internal thread on shell (or first end cover), first external screw thread on the open end with the first internal thread fixed connection that sets up on shell (or first end cover), perhaps open end is served and is set up first internal thread, set up first external screw thread on shell (or first end cover), first internal thread on the open end with the first external screw thread fixed connection that sets up on shell (or first end cover).

The silencer is characterized in that the shell is fixedly connected with the first end cover through a second internal thread and a second external thread, the second internal thread is arranged on any one element of the shell and the first end cover, and the second external thread is arranged on the other element of the shell and the first end cover.

The silencer is characterized in that an air inlet is formed in the end face of the first end cover, and an air outlet is formed in the side face of the first end cover.

In the embodiment of the present invention, two symmetrical exhaust holes 3 can be selected to be arranged on the side of the first end cap 1.

The silencer further comprises a fixing screw and a fixing nut, one end of the fixing screw is fixedly connected to the first end cover, the other end of the fixing screw penetrates through the beam current device and is in compression connection with the first end cover through the fixing nut, and meanwhile, the air inlet end of the beam current device is communicated with the air inlet hole in the first end cover.

The silencer further comprises at least two beam devices, and the at least two beam devices are connected in parallel or in series.

The silencer further comprises at least two silencers, wherein the at least two silencers are connected in parallel or in series.

The silencer also comprises a second beam current device and a second air inlet, the exhaust hole, the air inlet and the second air inlet are respectively arranged on the first end cover, the air inlet and the second air inlet are connected in parallel, the beam current device is formed by a hollow cylindrical structure, the hollow part of the beam current device forms a first cavity, the first cavity is communicated with the air inlet, and the beam current device is fixedly connected to the first end cover (or is an integral body); the second beam current device is formed by a second hollow cylindrical structure, the hollow part of the second beam current device forms a third cavity, the third cavity is communicated with a second air inlet, and the second beam current device is also fixedly connected to the first end cover (or is an integral body); the shell is formed by a cup-shaped structure, the open end of the shell is fixedly connected with the first end cover, the beam current device and the second beam current device are both arranged in the cup-shaped structure, and a second cavity is formed inside the cup-shaped structure; the vent hole is communicated with the second cavity. When high-speed airflow enters the first cavity and the third cavity through the air inlet, the high-speed airflow enters the second cavity through the beam device and is exhausted from at least one exhaust hole.

The silencer further comprises an exhaust pipeline, one end of the exhaust pipeline is connected with the exhaust hole, the other end of the exhaust pipeline discharges high-speed airflow into the atmosphere, or the other end of the exhaust pipeline discharges the high-speed airflow to a wind cooling device or a wind driven generator (or a wind driven device) to achieve secondary utilization of waste gas.

The silencer, wherein be provided with vent 1 and vent 2 on the air cooling unit, will exhaust duct's gas outlet with vent 1 is connected, vent 2 is as the exhaust vent.

The silencer also comprises a drainage device, wherein the drainage device is arranged on the shell and is communicated with the air inlet; or the drainage device is arranged on the shell and communicated with the exhaust hole.

The silencer is characterized in that the drainage device is a manual switch or an automatic drainage device.

The silencer, wherein set up the third internal thread on the shell, drainage set sets up the third external screw thread, the shell with drainage set passes through third internal thread and third external screw thread fixed connection.

The beam current device is made of any one material of PP cotton, resin cotton, foam cotton, non-woven fabric, felt cloth, powder sintering, powder bonding, micro-bead bonding, micro-pore foaming body and the like, or a combination of at least two materials.

The silencer, wherein the inboard of restraint device is powder sintering (or powder bonding, or microballon bonding, or particulate matter bonding,) material, and its outside is PP cotton (or resin wool, or foam cotton, or non-woven fabrics, or felt, or micropore foaming body).

The inner side of the beam current device is made of PP cotton (or resin cotton, or foam cotton, or non-woven fabric, or felt cloth, or micro-porous foaming body), and the outer side of the beam current device is made of powder sintering (or powder bonding, or micro-bead bonding, or micro-particle bonding).

The silencer, wherein the inboard of restraint device is PP cotton (or resin cotton, or bubble cotton, or non-woven fabrics, felt cloth, or micropore foaming body) material, and its centre is powder sintering (or powder bonding, or microballon bonding, or microparticle bonding,) material, and its outside is PP cotton (or resin cotton, or bubble cotton, or non-woven fabrics, felt cloth, or micropore foaming body) material.

The silencer, wherein the inboard of restraint device is powder sintering (or powder bonding, or microballon bonding or particulate matter bonding,) material, and its centre is PP cotton (or resin cotton, or bubble cotton, or non-woven fabrics, or felt cloth, or micropore foaming body) material, and its outside is powder sintering (or powder bonding, or microballon bonding, or particulate matter bonding,) material.

The utility model also provides a noise reduction method, including following step:

(1) The shell is isolated into a first cavity and a second cavity through the beam device with the micro-hole filtering precision between 20 microns and 0.1 micron, the filtering area of the beam device can be set to be large or small as required, the first cavity is communicated with the air inlet, and the second cavity is communicated with the air exhaust hole (or the exhaust pipe).

(2) The high-speed airflow is connected into the air inlet, enters the first cavity, then enters the second cavity through the beam device, and is discharged from the exhaust hole (or the exhaust pipe).

The utility model has the advantages that: the utility model discloses expand the class back by first cavity, by the micropore line of restrainting on the device, by the second cavity water conservancy diversion at last, enable the noise of high velocity air flow and effectively reduce to can also discharge assigned position, pollution abatement with moisture content, oil and particulate matter in the air current.

The utility model discloses simple structure uses the adaptable different temperatures's of corresponding material high velocity air flow to fall the noise and fall the pollution. The utility model discloses there is equipment that high velocity air produced to fall the noise and fall fields such as pollution that fall in industrial factories and mines such as electricity generation, chemical industry, metallurgical textile, engineering and transportation vehicles, industrial manufacturing, like engine, air compressor machine, vacuum machine, steam engine, high pressure boiler, high-pressure gas pitcher, stamping equipment, cylinder, solenoid valve, vacuum valve, pressure relief valve, all kinds of exhaust apparatus such as relief pressure valve, relief pressure valve to and fields such as all kinds of automation equipment, pneumatic tool.

Drawings

The utility model comprises the following drawings:

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a schematic view of an assembly according to an embodiment of the present invention;

FIG. 3 is a schematic external view of an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a second embodiment of the present invention;

FIG. 5 is a schematic assembly view of a second embodiment of the present invention;

FIG. 6 is a schematic view of an external appearance of the embodiment of the present invention;

FIG. 7 is a schematic diagram of a third structure of the embodiment of the present invention;

fig. 8 is a schematic structural diagram of the fourth embodiment of the present invention;

fig. 9 is a schematic structural diagram of the fifth embodiment of the present invention;

fig. 10 is a six-structure diagram of the embodiment of the present invention;

fig. 11 is a schematic structural diagram of the seventh embodiment of the present invention.

Detailed Description

The invention is explained in more detail below with reference to the figures and examples:

as shown in fig. 1, fig. 2 and fig. 3, the present invention comprises a housing 4, at least one inlet port 2, at least one beam device 5 and at least one exhaust hole 3, wherein the inlet port 2, the beam device 5 and the exhaust hole 3 are respectively arranged on the housing 4, and the beam device 5 is arranged between the inlet port 2 and the exhaust hole 3, the housing 4 is isolated into at least two cavities by the beam device 5, the first cavity is communicated with the inlet port 2, and the second cavity is communicated with the exhaust hole 3; the beam current device 5 is provided with a micropore filtering device, the filtering precision of the micropore filtering device is set between 20 micrometers and 0.1 micrometer, and the filtering area can be set according to the requirement; when high-speed airflow enters the first cavity through the air inlet 2, the high-speed airflow enters the second cavity after passing through the beam device 5 and then is discharged from the at least one exhaust hole 3.

The utility model discloses an in the concrete embodiment, beam device 5 still includes inlet end and exhaust end and establishes to the hollow circular cylinder structure, the both ends of hollow circular cylinder structure are open mouth, and beam device 5's inlet end and inlet port 2 intercommunication, beam device 5's exhaust end and exhaust hole 3 intercommunication.

In the embodiment of the present invention, the housing 4 includes at least one end cap 1, the housing 4 is fixedly connected to the first end cap 1, the first end cap 1 is respectively provided with an air inlet 2 and an air outlet 3, and the beam device 5 is respectively connected to the housing 4 and the first end cap 1 in a pressing manner.

In the embodiment of the present invention, the beam device 5 can be selected and connected to the housing 4, so that the first cavity and the second cavity are formed between the hollow cylindrical structure and the housing 4, and any one of the two elements of the first cavity and the second cavity is communicated with the air inlet 2, and the other element is communicated with the air outlet 3.

The utility model discloses an in the embodiment, can select hollow cylinder structure one end of beam device 5 to establish to open end, the other end and establish to the blind end, open end is connected with shell 4, makes constitute first cavity and second cavity between hollow cylinder structure and the shell 4, arbitrary one in first cavity and the second cavity and inlet port 2 intercommunication, another and exhaust hole 3 intercommunication.

The utility model discloses an in the concrete embodiment, can select hollow cylinder structure one end of beam device 5 to establish to open end, the other end to establish to the blind end, open the mouth and serve and set up first external screw thread, set up first internal thread on shell 4 (or first end cover 1), the first internal thread fixed connection that sets up on first external screw thread on the open end and shell 4 (or first end cover 1).

In the embodiment of the present invention, it is optional that a first internal thread is disposed on the open end, a first external thread is disposed on the housing 4 (or the first end cover 1), and the first internal thread on the open end is fixedly connected to the first external thread disposed on the housing 4 (or the first end cover 1).

In the embodiment of the present invention, any one of the two elements of the housing 4 and the first end cap 1 can be selected to be fixedly connected to the beam device 5.

The utility model discloses an in the concrete embodiment, can select inlet port 2, beam device 5 and exhaust hole 3 to set up respectively on shell 4 to the adjacent setting of beam device 5 is inboard at shell 4, and cavity and inlet port 2 intercommunication in the beam device 5, and the outside and the exhaust hole 3 intercommunication of beam device 5.

In the embodiment of the present invention, the outer shell 4 and the first end cap 1 may be selected to be cylindrical, conical, square, or irregular.

In the embodiment of the present invention, the housing 4 and the first end cap 1 can be connected by screws.

In the embodiment of the present invention, the housing 4 and the first end cap 1 can be selectively and fixedly connected through the second internal thread and the second external thread, the second internal thread is disposed on any one of the two elements of the housing 4 and the first end cap 1, and the second external thread is disposed on the other element.

In the embodiment of the present invention, at least two beam devices 5 may be optionally further included, and the at least two beam devices 5 are connected in parallel or in series.

In the specific embodiment of the utility model, still include at least two the muffler, at least two muffler parallel connection, or series connection.

The utility model discloses an in the concrete embodiment, can select still to include exhaust duct, exhaust duct one end is connected with exhaust hole 3, and the other end discharges the high-speed air current to the atmosphere, perhaps the other end discharges the high-speed air current to needs the air cooling plant on, be provided with vent 1 and vent 2 on the air cooling plant, will exhaust duct's gas outlet with vent 1 is connected, vent 2 regards as the exhaust vent.

In the embodiment of the present invention, the beam device 5 may be made of any one of PP cotton, resin cotton, foam cotton, non-woven fabric, felt fabric, powder sintered, powder bonded, bead bonded, micro-porous foam, or a combination of at least two of these materials.

The embodiment of the utility model provides an in, can select inlet port 2, beam device 5 and exhaust hole 3 to set up respectively on shell 4 to the adjacent setting of beam device 5 is inboard at shell 4, and beam device 5's interior cavity and inlet port 2 intercommunication, and beam device 5's the outside and exhaust hole 3 intercommunication.

The present invention can optionally further include an air inlet internal thread (or air inlet external thread) and an air outlet internal thread (or air outlet external thread), wherein the air inlet internal thread (or air inlet external thread) is disposed on the housing 4 of the air inlet 2, and the air outlet internal thread (or air outlet external thread) is disposed on the housing 4 of the air outlet 3.

In the embodiment of the present invention, it is optional that the air inlet internal thread (or the air inlet external thread) is disposed on the first end cap 1 of the air inlet hole 2, and the air outlet internal thread (or the air outlet external thread) is disposed on the first end cap 1 of the air outlet hole 3.

As shown in fig. 4, 5 and 6, the air inlet hole 2 is disposed on the end surface of the first end cover 1, and the air outlet hole 3 is disposed on the side surface of the first end cover 1.

As shown in fig. 7, the first end cap 1 of the present invention is provided with an air inlet 2, and the housing 4 is provided with an air outlet 3.

In the embodiment of the present invention, the air inlet internal thread (or the air inlet external thread) can be disposed on the first end cap 1 of the air inlet 2, and the air outlet internal thread (or the air outlet external thread) is disposed on the housing 4 of the air outlet 3.

As shown in fig. 8, the utility model discloses well shell 4 still includes second end 6, shell 4 respectively with

first end cover

1 and 6 fixed connection of second end cover, and beam device 5 compresses tightly with

first end cover

1 and 6 with second end cover respectively and is connected.

In the embodiment of the present invention, any one of the two elements of the first end cap 1 and the second end cap 6 can be selected to be connected to the beam current device 5.

In the embodiment of the present invention, the air inlet 2 can be selectively disposed on the first end cap 1, and the air outlet 3 can be disposed on the second end cap 6.

In the embodiment of the present invention, an air inlet 2 may be disposed on any one of the first end cap 1 and the second end cap 6, and the air outlet 3 may be disposed on the other element.

In the embodiment of the present invention, an air inlet 2 can be selectively disposed on any one of the two elements of the first end cap 1 and the second end cap 6, and an air outlet 3 is disposed on the housing 4.

In the embodiment of the present invention, the exhaust hole 3 can be selectively formed on any one of the two elements of the first end cover 1 and the second end cover 6, and the air inlet hole 2 is formed on the housing 4.

As shown in fig. 9, the present invention further includes a drainage device 7, and the drainage device 7 is disposed on the housing 4 and is communicated with the exhaust hole 3.

In the embodiment of the present invention, the water discharge device 7 can be selectively disposed on the housing 4 and communicated with the air inlet 2.

In the embodiment of the present invention, the drainage device 7 may be a manual switch or an automatic drainage device.

As shown in fig. 10, the utility model discloses in still including clamping screw 8 and fixation nut 9, clamping screw 8's one end fixed connection is at first end cover 1, and the other end passes beam device 5 and compresses tightly beam device 5 through fixation nut 9 and connect on first end cover 1, simultaneously, on beam device 5 inlet port 2 intercommunication on inlet end and the first end cover 1.

As shown in fig. 11, the utility model discloses well inlet port 2 sets up on shell 4, shell 44 and beam device 5 fixed connection, and a N exhaust hole 3 (not shown in the figure) sets up on beam device 4, its filter fineness is established between 20 microns to 0.1 micron, its filter area can set up the size as required, and inlet port 2 and exhaust hole 3 (not shown in the figure) are the connected state, after the high velocity air flow from inlet port 2 input, exhaust hole 3 (not shown in the figure) on the beam device 5 discharge.

In the embodiment of the present invention, the inside of the beam device 5 forms the first cavity, and the outside thereof forms the second cavity.

The utility model also provides a amortization method, including following step:

(1) The shell 4 is isolated into a first cavity and a second cavity through the beam device 5 with the micropore filtering precision of 20-0.1 micron, the filtering area of the beam device 5 can be set according to the requirement, the first cavity is communicated with the air inlet 2, and the second cavity is communicated with the exhaust hole 3 (or the exhaust pipe).

(2) The high-speed airflow is connected into the air inlet 2, enters the second cavity through the beam device after entering the first cavity, and is discharged from the exhaust hole 3 (or the exhaust pipe).

The utility model has the advantages that: the utility model discloses expand the class back by first cavity, by the micropore line of restrainting on the device, by the second cavity water conservancy diversion at last, enable the noise of high velocity air flow and effectively reduce to can also arrange moisture content, oil and particulate matter to the assigned position in the air current, pollution abatement.

The present invention can be implemented in various modifications without departing from the spirit and scope of the present invention, and the above description is only a preferred and practical embodiment of the present invention, and is not intended to limit the scope of the present invention.

Claims

1. A muffler characterized by: the device comprises a shell, at least one air inlet hole, at least one beam device and at least one exhaust hole, wherein the air inlet hole, the beam device and the exhaust hole are respectively arranged on the shell, the beam device is arranged between the air inlet hole and the exhaust hole, the shell is separated into at least two cavities by the beam device, the first cavity is communicated with the air inlet hole, and the second cavity is communicated with the exhaust hole; the beam device is provided with a microporous filtering device, the filtering precision of the microporous filtering device is set between 20 micrometers and 0.1 micrometer, and the filtering area can be set according to the requirement; when high-speed airflow enters the first cavity through the air inlet, the high-speed airflow enters the second cavity through the beam device and is exhausted from at least one exhaust hole.

2. The muffler of claim 1, wherein: the beam current device further comprises an air inlet end and an air outlet end, and the shell further comprises at least one end cover; the air inlet end is communicated with the air inlet hole, and the air outlet end is communicated with the air outlet hole; the shell is connected with a first end cover, the first end cover is provided with the air inlet and the exhaust hole respectively, or the first end cover is provided with the air inlet and the shell is provided with the exhaust hole, the beam device is connected with the shell and the first end cover respectively, or any one of the two elements of the shell and the first end cover is connected with the beam device; or the shell is respectively connected with the first end cover and the second end cover, the first end cover is provided with the air inlet, the second end cover is provided with the exhaust hole, the beam current device is respectively connected with the first end cover and the second end cover, or any one of the first end cover and the second end cover is connected with the beam current device.

3. The muffler of claim 2, wherein: the beam current device is of a hollow cylindrical structure, two ends of the hollow cylindrical structure are open ports and are connected with the shell, so that a first cavity and a second cavity are formed between the hollow cylindrical structure and the shell, any one of the first cavity and the second cavity is communicated with the air inlet, and the other one of the first cavity and the second cavity is communicated with the air outlet; or one end of the hollow cylindrical structure is set as an open end, the other end of the hollow cylindrical structure is set as a closed end, the open end is connected with the shell, so that a first cavity and a second cavity are formed between the hollow cylindrical structure and the shell, any one of the first cavity and the second cavity is communicated with the air inlet, and the other one of the first cavity and the second cavity is communicated with the air outlet.

4. The muffler of claim 3, wherein: the beam current device is characterized by further comprising a fixing screw and a fixing nut, one end of the fixing screw is fixedly connected to the first end cover, the other end of the fixing screw penetrates through the beam current device and is in compression connection with the first end cover through the fixing nut, and meanwhile, the air inlet end of the beam current device is communicated with the air inlet hole in the first end cover.

5. The muffler of claim 1, wherein: the device also comprises at least two beam devices, wherein the at least two beam devices are connected in parallel or in series.

6. The muffler of claim 1, wherein: still include the exhaust duct, exhaust duct one end with the exhaust hole is connected, and the other end discharges high-speed air current to the atmosphere, or the other end discharges high-speed air current to needs on the air-cooled device or the pnematic device to realize waste gas reutilization.

7. The muffler of claim 1, wherein: the drainage device is arranged on the shell and is communicated with the air inlet; or the drainage device is arranged on the shell and communicated with the exhaust hole.

8. The muffler of claim 1, wherein: the beam current device is adjacently arranged at the inner side or the outer side of the shell, or the shell is arranged at the inner side and the outer side of the beam current device, and the beam current device is respectively communicated with the air inlet and the air outlet; or the air inlet is arranged on the shell, the shell is fixedly connected with the beam current device, the N air outlet holes are arranged on the beam current device, the filtering precision of the N air outlet holes is set between 20 micrometers and 0.1 micrometer, the filtering area of the N air outlet holes can be set according to the requirement, the air inlet holes and the air outlet holes are in a communicated state, and when high-speed airflow is input from the air inlet holes, the high-speed airflow passes through the air outlet holes on the beam current device and is exhausted.

9. The muffler of claim 3, wherein: the air outlet hole, the air inlet hole and the second air inlet hole are respectively arranged on the first end cover, the air inlet hole and the second air inlet hole are connected in parallel, the beam device is formed by a hollow cylindrical structure, the hollow part of the beam device forms a first cavity, the first cavity is communicated with the air inlet hole, and the beam device is arranged on the first end cover; the second beam current device is formed by a second hollow cylindrical structure, a hollow part of the second beam current device forms a third cavity, the third cavity is communicated with a second air inlet, and the second beam current device is arranged on the first end cover; the shell is formed by a cup-shaped structure, the open end of the shell is fixedly connected with the first end cover, the beam current device and the second beam current device are both arranged in the cup-shaped structure, and a second cavity is formed inside the cup-shaped structure; the exhaust hole is communicated with the second cavity; when high-speed airflow enters the first cavity and the third cavity through the air inlet, the high-speed airflow enters the second cavity through the beam device and is exhausted from at least one exhaust hole.

10. The muffler of claim 1, or 2, or 3, or 4, or 5, or 6, or 7, or 8, or 9, wherein: the beam current device is made of any one material of PP cotton, resin cotton, foam cotton, non-woven fabric, felt cloth, powder sintering, powder bonding, micro-bead bonding, micro-particle bonding, micro-porous foaming body or a combination of at least two materials.