CN207302619U - Silencer - Google Patents

Abstract

Silencer according to the present utility model, including：Multiple housings, left end in two neighboring housing positioned at the right end and the housing positioned at right side of the housing in left side is detachably connected, each housing is configured with the double-deck barrel-like structure of outer barrel and inner tube, wherein, the left end of outer barrel opens wide and has through hole on the wall of outer barrel, the left end of inner tube and right end open wide so that each inner tube connects, and are closed between the right end of the right end of each outer barrel and corresponding each inner tube；Multiple noise reduction layers, each noise reduction layer are located between corresponding outer barrel and inner tube；Base with centre bore, the right end of base and the housing positioned at the rightmost side are detachably connected, and centre bore is connected with the inner tube of the housing positioned at the rightmost side；End cap with central tube, end cap are removably connected with the left end of the housing positioned at the leftmost side, and central tube is connected with the said inner tube of the housing positioned at the leftmost side.Silencer according to the present utility model, it is simple in structure, easy for installation, air cavity volume can be changed.

Description

Silencer

Technical field

It the utility model is related to a kind of silencer.

Background technology

Noise has been considered as the important pollution of modern society, and the noise that compressed air produces is modern industry main noise One of source, compressed air cause surrounding air to shake by exhaust outlet, so as to produce stronger noise.Silencer is that abatement air-flow is made an uproar The device of sound, it can allow air-flow by while can effectively stop surrounding air again and shake and weaken acoustic energy and outwards propagate, in gas Dynamic component exhaust outlet application effect is obvious.

Existing silencer is made of columned shell, noise reduction layer and muffler cover, there is grate opening, noise reduction layer on shell For half ventilative cellucotton.Noise reduction layer is abutted on the inner wall of shell, and noise reduction lid is threadedly coupled with shell bottom, and cover top portion has Boss connector, connector periphery are taper pipe thread, are connected with exhaust outlet.High pressure draught enters outer shell cavity from exhaust outlet It is interior, stopped by noise reduction layer at escape.Existing silencer operation principle is decompression and expansion principle, one is being vented by reducing Pressure reduces choked jets noise, second, reducing speed by expanding volume reduces choked jets noise.The principle is dropping There are the optimal value of stream pressure, air velocity and volume during making an uproar, i.e., it is 1.89 air that air pressure, which is reduced to critical pressure, During pressure, noise reduction is most obvious.Since volume and air pressure and air velocity are there are optimal value, and the muffler volume of existing scheme For fixed volume, cause noise reduction poor for applicability etc..Existing compressed air silencer is fixed volume expansion chamber type absorber, to exhaust The pressure at expulsion and capacity adaptability of mouth are poor.

With the expansion of pneumatic component use and elimination of the people to noise require it is higher and higher, existing silencer with It is difficult to meet the requirements, especially for the silencer of the compressed air of pump housing discharge, existing acoustic wave filter structure is single, and cavity holds Product is fixed, and is only capable of compatible portion certain fixing model.How muffler volume changed according to different model and air pressure, reduce noise As present urgent problem to be solved.

Utility model content

The utility model is intended to solve at least some of the technical problems in related technologies.

For this reason, a purpose of the utility model is to propose that one kind is simple in structure, easy for installation, can change air cavity appearance Long-pending silencer.

Silencer according to the present utility model, including：

Multiple housings, in the two neighboring housing positioned at left side the housing right end and the shell positioned at right side The left end of body is detachably connected, and each housing is configured with the double-deck barrel-like structure of outer barrel and inner tube, wherein, it is described The left end of outer barrel opens wide and has through hole on the wall of said tub, and the left end and right end of said inner tube are opened wide so that each described Inner tube connects, and is closed between the right end of each said tub and the right end of corresponding each said inner tube；

With multiple housings multiple noise reduction layers correspondingly, each noise reduction layer be located at corresponding said tub and Between said inner tube；

Base with centre bore, the right end of the base and the housing positioned at the rightmost side are detachably connected, institute The said inner tube that centre bore is stated with the housing positioned at the rightmost side connects；

End cap with central tube, the end cap are removably connected with the left end of the housing positioned at the leftmost side, institute The said inner tube that central tube is stated with the housing positioned at the leftmost side connects.

Advantageously, right end of the left end of each said tub with the first internal thread and each said tub is with outside first Screw thread, the left end of the base have the second internal thread be adapted to first external screw thread, the right end of the end cap with Second screw thread of the first internal thread adaptation.

Advantageously, the right end of the housing in left side and the housing positioned at right side are located in the two neighboring housing Left end grafting, the base with positioned at the rightmost side the housing right end grafting, the end cap with positioned at the leftmost side institute State the left end grafting of housing.

Advantageously, the right end of the housing in left side and the housing positioned at right side are located in the two neighboring housing Left end clamping, the base with positioned at the rightmost side the housing right end be clamped, the end cap with positioned at the leftmost side institute State the left end clamping of housing.

Advantageously, the axis of the central tube, the axis of multiple said inner tubes and the centre bore axis overlap.

Advantageously, the caliber all same of each said inner tube, the aperture of the centre bore are less than the caliber of the central tube, The caliber of the central tube is less than the caliber of each said inner tube.

Advantageously, each noise reduction layer is cellucotton noise reduction layer.

The additional aspect and advantage of the utility model will be set forth in part in the description, partly by from following description In become obvious, or recognized by the practice of the utility model.

Brief description of the drawings

Fig. 1 is the schematic diagram according to the silencer of the utility model one embodiment；

Fig. 2 is the sectional view along the line A-A in Fig. 1；

Fig. 3 is the right view of Fig. 1.

Embodiment

The embodiment of the utility model is described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning Same or similar element is represented to same or similar label eventually or there is same or like element.Below by ginseng The embodiment for examining attached drawing description is exemplary, it is intended to for explaining the utility model, and it is not intended that to the utility model Limitation.

Below with reference to the accompanying drawings it is described in detail silencer according to the present utility model.

As shown in Figure 1 to Figure 3, silencer according to the present utility model, including：Multiple housings 100, multiple noise reduction layer (figures Not shown in), base 200, end cap 300.

Specifically, positioned at the left (side indicated by an arrow left side i.e. as shown in Figures 1 and 2 in two neighboring housing 100 To) housing 100 of side and housing of right (direction indicated by the arrow right i.e. as shown in Figures 1 and 2) end with being located at right side 100 left end is detachably connected.Each housing 100 is configured with the double-deck barrel-like structure of outer barrel 110 and inner tube 120, its In, the left end of outer barrel 110 opens wide and has through hole 1101 on the wall of outer barrel 110, the left end and right end of inner tube 120 open wide so that Each inner tube 120 connects, and is closed between the right end of each outer barrel 110 and the right end of corresponding each inner tube 120.

Multiple noise reduction layers are corresponded with multiple housings 100, and each noise reduction layer is located at corresponding 110 He of outer barrel Between inner tube 120.Advantageously, each noise reduction layer is cellucotton noise reduction layer.

Base 200 has centre bore 2001, and base 200 and the right end of the housing 100 positioned at the rightmost side are detachably connected, Centre bore 2001 is connected with the inner tube 120 of the housing 100 positioned at the rightmost side.

End cap 300 has central tube 3001, and end cap 300 is removably connected with the left end of the housing 100 positioned at the leftmost side, Central tube 3001 is connected with the inner tube 120 of the housing 100 positioned at the leftmost side.

Silencer according to the present utility model, is detachably connected between multiple housings successively, can be by adjusting housing Quantity change air cavity volume, until air cavity volume reaches or close to optimum state so that noise elimination effect is optimal state, Its noise elimination numerical value can reach 24dB~30dB.This is simple in structure at the same time, consumptive material is few, easy for installation.

Advantageously, the left end of each outer barrel 110 has the right end of the first internal thread (not shown) and each outer barrel 110 With the first external screw thread (not shown), the left end of base 200 has the second internal thread being adapted to first external screw thread (not shown), the right end of end cap 300 have the second screw thread (not shown) being adapted to first internal thread.Also It is to say, multiple outer barrels, base, end cap are connected through a screw thread.

Advantageously, the right end of the housing 100 in left side and the housing 100 positioned at right side are located in two neighboring housing 100 Left end grafting, the right end grafting of base 200 and the housing 200 positioned at the rightmost side, end cap 300 and the housing 100 positioned at the leftmost side Left end grafting.

Advantageously, the right end of the housing 100 in left side and the housing 100 positioned at right side are located in two neighboring housing 100 Left end is clamped, and base 200 and the right end of the housing 100 positioned at the rightmost side are clamped, end cap 300 and the housing 100 positioned at the leftmost side Left end clamping.

Advantageously, the axis of central tube 3001, the axis of multiple inner tubes 120 and 2001 axis of centre bore overlap.Favorably Ground, the caliber all same of each inner tube 120, the aperture of centre bore 2001 are less than the caliber of central tube 3001, central tube 3001 Caliber is less than the caliber of each inner tube 120.

In the description of the utility model, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width Degree ", " thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outer ", " suitable The orientation or position relationship of the instruction such as hour hands ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " are based on orientation shown in the drawings Or position relationship, be for only for ease of description the utility model and simplify and describe, rather than instruction or imply signified device or Element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that limit to the utility model System.

In addition, term " first ", " second " are only used for description purpose, and it is not intended that instruction or hint relative importance Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be expressed or Implicitly include one or more this feature.In the description of the utility model, " multiple " are meant that two or more, remove It is non-separately to have clearly specific limit.

In the utility model, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " Gu It is fixed " etc. term should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integrally；Can be Mechanically connect or be electrically connected；It can be directly connected, can also be indirectly connected by intermediary, can be two The interaction relationship of connection or two elements inside element.For the ordinary skill in the art, can basis Concrete condition understands concrete meaning of the above-mentioned term in the utility model.

In the utility model, unless otherwise clearly defined and limited, fisrt feature is "above" or "below" second feature Can be that the first and second features directly contact, or the first and second features pass through intermediary mediate contact.Moreover, first is special Sign second feature " on ", " top " and " above " can be fisrt feature directly over second feature or oblique upper, or only Represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be with Be fisrt feature immediately below second feature or obliquely downward, or be merely representative of fisrt feature level height and be less than second feature.

In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description Point is contained at least one embodiment or example of the utility model.In the present specification, to the schematic table of above-mentioned term State and be necessarily directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be with Combine in an appropriate manner in any one or more of the embodiments or examples.In addition, without conflicting with each other, this area Technical staff can by the different embodiments or example described in this specification and different embodiments or exemplary feature into Row combines and combination.

Although the embodiment of the utility model has been shown and described above, it is to be understood that above-described embodiment is Exemplary, it is impossible to the limitation to the utility model is interpreted as, those of ordinary skill in the art are in the scope of the utility model It is interior above-described embodiment to be changed, is changed, is replaced and modification, each fall within the scope of protection of the utility model.

Claims (7)

1. A kind of 1. silencer, it is characterised in that including：

   Multiple housings, in the two neighboring housing positioned at left side the housing right end and the housing positioned at right side Left end is detachably connected, and each housing is configured with the double-deck barrel-like structure of outer barrel and inner tube, wherein, said tub Left end open wide and there is through hole on the wall of said tub, the left end and right end of said inner tube are opened wide so that each said inner tube Connect, closed between the right end of each said tub and the right end of corresponding each said inner tube；

   With multiple housings multiple noise reduction layers correspondingly, each noise reduction layer is located at corresponding said tub and described Between inner tube；

   Base with centre bore, the right end of the base and the housing positioned at the rightmost side is detachably connected, in described Heart hole is connected with the said inner tube of the housing positioned at the rightmost side；

   End cap with central tube, the end cap is removably connected with the left end of the housing positioned at the leftmost side, in described Heart pipe is connected with the said inner tube of the housing positioned at the leftmost side.
2. 2. silencer according to claim 1, it is characterised in that the left end of each said tub have the first internal thread and The right end of each said tub has the first external screw thread, and the left end of the base has be adapted to first external screw thread second Internal thread, the right end of the end cap have the second screw thread being adapted to first internal thread.
3. 3. silencer according to claim 1, it is characterised in that be located at the shell in left side in the two neighboring housing The left end grafting of the right end of body and the housing positioned at right side, the right end of the base and the housing positioned at the rightmost side are inserted Connect, the left end grafting of the end cap and the housing positioned at the leftmost side.
4. 4. silencer according to claim 1, it is characterised in that be located at the shell in left side in the two neighboring housing The right end of body and the left end of the housing positioned at right side are clamped, the right end card of the base and the housing positioned at the rightmost side Connect, the left end of the end cap and the housing positioned at the leftmost side is clamped.
5. 5. according to the silencer any one of claim 1-4, it is characterised in that axis, the Duo Gesuo of the central tube The axis and the centre bore axis for stating inner tube overlap.
6. 6. silencer according to claim 5, it is characterised in that the caliber all same of each said inner tube, the center The aperture in hole is less than the caliber of the central tube, and the caliber of the central tube is less than the caliber of each said inner tube.
7. 7. according to the silencer any one of claim 1-4, it is characterised in that each noise reduction layer is cellucotton Noise reduction layer.