CN219642540U

CN219642540U - Silencer of vacuum generator

Info

Publication number: CN219642540U
Application number: CN202320299370.4U
Authority: CN
Inventors: 蒋军; 龙陈
Original assignee: Shenzhen New Liansheng Photoelectric Technology Co ltd
Current assignee: Shenzhen New Liansheng Photoelectric Technology Co ltd
Priority date: 2023-02-15
Filing date: 2023-02-15
Publication date: 2023-09-05
Anticipated expiration: 2033-02-15

Abstract

The utility model relates to a silencer of a vacuum generator, which comprises: a box body for holding vacuum generating device, the inside subassembly that gives sound insulation that is provided with of box body includes the muffler, soundproof cotton, and be used for dispersing air pressure flow's isolating device, isolating device cuts apart into first cavity with box body inner chamber, the second cavity, vacuum generating device sets up inside first cavity, muffler and isolating device fixed connection, and muffler one end and first cavity intercommunication, the muffler other end and second cavity intercommunication, still be provided with soundproof cotton in the first cavity, and soundproof cotton and box body inner wall laminating each other, a side of box body next to the second cavity is provided with a plurality of dispersion holes, through set up soundproof cotton around vacuum generating device, set up soundproof cotton in inclosed box one side, dispersion holes for dispersion gas flow and pressure, multiple absorption sound wave, overall structure is simple, have the low cost of solving noise pollution, maintain advantages such as simple.

Description

Silencer of vacuum generator

Technical Field

The utility model relates to the technical field of industrial silencing, in particular to a silencing device of a vacuum generator.

Background

The ejector type vacuum generator is an irreplaceable vacuum generating device in the vacuum technology by the characteristics of simple structure, convenient installation and maintenance, quick vacuum generation and release, and the like, but the ejector type vacuum generator can generate pulsation noise under certain air supply pressure and conditions, and the problem is always confusing to manufacturers and users.

In the industrial manufacturing process, the production can be satisfied with very small cost, but high cost and high operation have to be selected to maintain the production due to noise; therefore, how to reduce the cost and improve the noise reduction effect of the vacuum generator is a problem to be solved by those skilled in the art.

Disclosure of Invention

The utility model aims to overcome the technical defects and provide the silencer of the vacuum generator, which has the advantages of simple structure, low noise pollution solving cost, simple maintenance and the like by being provided with the soundproof cotton and the vacuum tail soundproof device and dispersing the gas flow and pressure.

In order to achieve the above technical object, the present utility model provides a silencer for a vacuum generator, comprising:

the box body is used for accommodating the vacuum generating device and is characterized in that a sound insulation assembly is arranged inside the box body, the sound insulation assembly comprises a silencer, sound insulation cotton and an isolation device used for dispersing air pressure flow, the isolation device divides the inner cavity of the box body into a first cavity and a second cavity, the vacuum generating device is arranged inside the first cavity, the silencer is fixedly connected with the isolation device, one end of the silencer is communicated with the first cavity, the other end of the silencer is communicated with the second cavity, the sound insulation cotton is further arranged in the first cavity, the sound insulation cotton is mutually attached to the inner wall of the box body, and a plurality of dispersing holes are formed in one side surface of the box body, which is closely adjacent to the second cavity.

Compared with the prior art, the technical scheme of the utility model has the following beneficial technical effects:

1. by arranging the sealed sound insulation box body, the propagation distance and speed of sound are reduced, when sound waves are blocked along with barriers in the process of sound propagation in a certain space, the propagation speed of sound is reduced by refraction of the sound in the propagation process, and part of sound energy is absorbed, so that noise is reduced.

2. The sound insulation box body is internally provided with the diaphragmatic cotton, sound waves are doubly absorbed, the object vibrates to generate sound, the sound waves are transmitted in the air, the cotton is of a multi-fiber structure, the sound waves pass through reflection, mutual superposition and collision of countless fibers when passing through the cotton, the sound wave energy is converted into heat energy, the sound wave intensity is weakened, and the sound disappears.

3. The silencer structure also considers the size of the collection space of the bleed air and the dispersion emission problem, realizes the flow reduction of unit area through reasonable number and size of dispersion holes, not only can not affect the suction force of a vacuum generator, but also reduces the flow of the bleed air, and the reasonable structural design ensures that the vibration of the compressed air discharged by the air holes is minimum, thereby achieving the silencing effect.

Drawings

FIG. 1 is a schematic view of a silencer for a vacuum generator according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram of a second view of a silencer of a vacuum generator according to an embodiment of the present utility model;

FIG. 3 is a schematic view of a third view of a silencer of a vacuum generator according to an embodiment of the present utility model;

FIG. 4 is a schematic cross-sectional view of FIG. 3 along A-A;

FIG. 5 is a schematic cross-sectional view of FIG. 3 along B-B;

FIG. 6 is a schematic diagram of a septum arrangement according to an embodiment of the present utility model;

FIG. 7 is a schematic view of a vacuum generator according to an embodiment of the present utility model;

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 7, the present embodiment provides a silencer for a vacuum generator, which includes: a case body 2 for accommodating the vacuum generating device 1;

the inside of the box body 2 is provided with a sound insulation component 3, the sound insulation component 3 comprises a silencer 31, a sound insulation cotton 32 and an isolation device 33 for dispersing air pressure flow, the isolation device 33 divides the inner cavity of the box body 2 into a first cavity 4 and a second cavity 5, the vacuum generating device 1 is arranged inside the first cavity 4, the silencer 31 is fixedly connected with the isolation device 33, one end of the silencer 31 is communicated with the first cavity 4, the other end of the silencer 31 is communicated with the second cavity 5, the sound inlet end of the silencer 31 is arranged in the first cavity 4, sound is weakened through the silencer 31, the sound that weakens overflows from again second cavity 5, still be provided with in the first cavity 4 soundproof cotton 32, just soundproof cotton 32 with the mutual laminating of box body 2 inner wall, next-door neighbour second cavity 5 box body 2 side is provided with a plurality of dispersion holes 6, and here illustrates down, and here dispersion holes 6 are considering the collecting space size and the dispersion emission problem of gassing, realize the flow decline of unit area through reasonable dispersion hole 6 quantity and size, both can reach not influencing vacuum generator's suction, reduce the flow of gassing again, and reasonable structural design makes the compression minimum at the vibration that the air hole was discharged, reaches the amortization effect.

Preferably, the isolating device 33 is embedded in the box body 2, where it should be noted that, two sides of the interior of the box body 2 are provided with a protrusion, a groove is formed between the two protrusions, the isolating device 33 is embedded in the groove, the isolating device 33 is of a double-layer hollow structure, and it should be explained that, the double-layer hollow structure refers to that the isolating device 33 is provided with an interlayer, that is, the isolating device 33 is of a cuboid structure, that is, a double-layer structure, but the middle is of a hollow structure, the space between the isolating device 33 and one side of the dispersing hole 6 is the second cavity 5, and one side of the isolating device 33, which is close to the first cavity 4, is provided with the soundproof cotton 32; the isolation device 33 provided here reduces a part of air pressure and noise by the soundproof cotton 32 on one side, greatly disperses air flow and pressure by the hollow sandwich structure, and then further reduces sound volume by the muffler 31; the soundproof cotton 32 is provided with the buckle 321, the soundproof cotton 32 pass through the buckle 321 respectively with box body 2 inner wall the isolating device 33 is fixed link to each other, box body 2 is inside adds the diaphragmatic cotton, plays dual absorption sound wave effect, the soundproof cotton 32 is porous fibrous structure, just soundproof cotton 32 surface is wave structure, because soundproof cotton 32 has the multi-fiber structure, and object vibrations produce sound, and the sound wave passes through reflection, mutual stack, the collision of innumerable fibre when the sound wave passes through the cotton, and sound wave energy converts into heat energy, and sound wave intensity weakens, and final sound wave is absorbed, buckle 321 one end is the cake structure, the buckle 321 other end is conical, and the mid portion is cylindrical, and the diameter is less than both ends diameter, the conical one end card of soundproof cotton 32 is in soundproof cotton 32 is inside, and is installed fixedly with the form of buckle 321 to the soundproof cotton 32, has absorbed certain sound, isolating device 33 at box body 2 afterbody is with the mode and is installed and rotate, can disperse gas flow and pressure again pollute, and the whole easy operation and maintenance of structure has been solved.

In this embodiment, the vacuum generating devices 1 are arranged as a group, the vacuum generating devices 1 include a vacuum generating module 11 and a pipe fitting 12, an external end 13 is disposed on the other side of the box body 2, one side of the pipe fitting 12 is connected with the vacuum generating devices 1, and the other side of the pipe fitting 12 is connected with the external end 13.

Preferably, the other side of the box body 2 is further provided with a plurality of threaded holes, the external end 13 passes through the threaded holes and extends to the outside of the box body 2, the external end 13 comprises a vacuum interface end 131 and an air pressure interface end 132, the air pressure interface end 132 is connected with one side of the vacuum generating device 1, the other side of the vacuum generating device 1 is connected with the silencer 31, the upper part of the vacuum generating device 1 is connected with the pipe fitting 12, and the pipe fitting 12 is connected with the vacuum interface end 131.

Preferably, the pipe fitting 12 comprises a joint 121 and an air pipe 122, the joint 121 connects the air pipe 122 with the vacuum generating device 1, the joint 121 is provided with an interface, the pipe diameter of the air pipe is matched with the inner diameter of the interface, and the air pipe 122 is fixedly connected with the interface.

Preferably, a vacuum barometer 14 for displaying pressure data is further disposed on one side surface of the case body 2, and the vacuum barometer 14 is connected with one end of the upper portion of one of the vacuum generating devices 1 through the interface.

Preferably, the box body 2 is provided with a housing 21, the housing includes a first housing 211 and a second housing 212, the propagation distance and speed of sound are reduced by arranging a sealed sound insulation box body 2, when sound waves are blocked along with obstacles in the propagation of sound in a certain space, the sound waves can be refracted along with the obstacles to reduce the propagation speed of sound in the propagation process, part of sound energy is absorbed, so that noise is reduced, the first housing 211 is arranged at a distance from the second housing 212, one side of the first housing 211 is detachable, the second housing 212 is arranged inside the first housing 211, the sound insulation cotton 32 is arranged on the side and bottom of the second housing 212 of the first cavity 4, and the bottom of the second housing 212 of the second cavity 5 is also provided with the sound insulation cotton 32.

Working principle: according to the utility model, the sound insulation cotton 32 is arranged around the vacuum generating module 11 to play a role in double absorption of sound waves, the cotton has a multi-fiber structure, sound waves are reflected by countless fibers, mutually overlapped and collided when passing through the sound insulation cotton 32, the sound wave energy is converted into heat energy, and the sound wave intensity is weakened; the isolation device 33 is embedded at one side of the box body 2, part of air pressure and noise are weakened through the soundproof cotton 32 at one side, air flow and pressure are greatly dispersed through the hollow sandwich structure, and then the volume is further reduced through the silencer 31; then, the dispersing holes 6 are arranged on the box body at one side close to the isolating device 33, and the flow rate of unit area is reduced through the reasonable quantity and the size of the dispersing holes 6, so that the suction force of the vacuum generator is not influenced, the flow rate of air release is reduced, and the vibration discharged by the compressed air holes is minimized through reasonable structural design, so that the silencing effect is achieved; finally, through setting up the propagation distance and the speed of sound that a inclosed sound proof box body 2 has reduced, thereby the sound wave can take place refracting in the propagation process along with the barrier and reduce the propagation speed of sound when the sound wave is in certain space sound propagation, and partial sound energy is absorbed for noise reduction, the device simple structure, with low costs, fine solution enterprise solves noise pollution problem.

The foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the utility model are intended to be included within the scope of the utility model.

Claims

1. A vacuum generator muffler device comprising: the box body is used for accommodating the vacuum generating device and is characterized in that a sound insulation assembly is arranged inside the box body, the sound insulation assembly comprises a silencer, sound insulation cotton and an isolation device used for dispersing air pressure flow, the isolation device divides the inner cavity of the box body into a first cavity and a second cavity, the vacuum generating device is arranged inside the first cavity, the silencer is fixedly connected with the isolation device, one end of the silencer is communicated with the first cavity, the other end of the silencer is communicated with the second cavity, the sound insulation cotton is further arranged in the first cavity, the sound insulation cotton is mutually attached to the inner wall of the box body, and a plurality of dispersing holes are formed in one side surface of the box body, which is closely adjacent to the second cavity.

2. The silencer of vacuum generator according to claim 1, wherein the isolating device is embedded in the box body, the isolating device is of a double-layer hollow structure, the space between the isolating device and one side of the dispersing holes is the second cavity, and the isolating device is provided with the soundproof cotton at one side close to the first cavity.

3. The silencer of the vacuum generator according to claim 1, wherein the soundproof cotton is provided with a buckle, the soundproof cotton is fixedly connected with the inner wall of the box body and the isolating device through the buckle respectively, the soundproof cotton is of a porous fiber structure, the surface of the soundproof cotton is of a wavy structure, one end of the buckle is of a cake structure, the other end of the buckle is conical, the middle part of the buckle is cylindrical, and the diameter of the soundproof cotton is smaller than that of the two ends.

4. The silencer of the vacuum generator according to claim 1, wherein the vacuum generating devices are arranged in a group, the vacuum generating devices comprise a vacuum generating module and a pipe fitting, an external end part is arranged on the other side face of the box body, one side of the pipe fitting is connected with the vacuum generating device, and the other side of the pipe fitting is connected with the external end part.

5. The silencer of claim 4, wherein the other side of the box body is further provided with a plurality of threaded holes, the external end portion extends to the outside of the box body through the threaded holes, the external end portion comprises a vacuum interface end and a pneumatic interface end, the pneumatic interface end is connected with one side of the vacuum generator, the silencer is connected with the other side of the vacuum generator, the upper portion of the vacuum generator is connected with the pipe, and the pipe is connected with the vacuum interface end.

6. The silencer of a vacuum generator of claim 4, wherein the tube includes a connector and a gas tube, the connector connects the gas tube with the vacuum generator, the connector is provided with an interface, the diameter of the gas tube matches the inner diameter of the interface, and the gas tube is fixedly connected with the interface.

7. The silencer of claim 6, wherein a vacuum gauge for displaying pressure data is further provided on one side of the case body, and the vacuum gauge is connected to the interface at one end of the upper portion of one of the vacuum generators.

8. The silencer of a vacuum generator according to claim 1, wherein the case body is provided with a housing, the housing includes a first housing and a second housing, the first housing is disposed apart from the second housing, one side of the first housing is detachable, the second housing is disposed inside the first housing, the soundproof cotton is disposed on the side and bottom of the second housing of the first cavity, and the bottom of the second housing of the second cavity is also provided with the soundproof cotton.