CN203742941U - Compressor silencing device - Google Patents
Compressor silencing device Download PDFInfo
- Publication number
- CN203742941U CN203742941U CN201420121661.5U CN201420121661U CN203742941U CN 203742941 U CN203742941 U CN 203742941U CN 201420121661 U CN201420121661 U CN 201420121661U CN 203742941 U CN203742941 U CN 203742941U
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- China
- Prior art keywords
- lower shell
- muffling bucket
- shell body
- silencing
- muffling
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Abstract
The utility model discloses a compressor silencing device which comprises a lower shell. An upper cover is fixedly connected to the starting end of the lower shell, and a silencing cavity is defined by the upper cover and the lower shell. An impendence silencing part is arranged in the silencing cavity, and an air outlet and an air inlet are further formed in the upper cover or the lower shell. The compressor silencing device further comprises an inner tube which is in a cylinder shape, and a plurality of through holes are formed in the side wall of the inner tube. The impendence silencing part comprises a plurality of silencing barrels, the silencing barrels are shaped like a barrel with an opening in the lower end, the side face of each silencing barrel is provided with a plurality of bar-shaped edges parallel to the axial direction of the silencing barrel, and the left side and the right side of each bar-shaped edge are respectively and fixedly connected with an impendence sound absorption material. The impendence sound absorption materials between two adjacent bar-shaped edges form a lip opening which protrudes towards the inside of the corresponding silencing barrel, and silencing barrel connectors with the number being equal to the number of the silencing barrels are further formed in the bottom of the lower shell. The compressor silencing device is good in silencing effect, and conductive to avoiding the damage condition caused by large local loads of the impendence silencing part.
Description
Technical field
The utility model relates to a kind of air compressor noise reducing apparatus, particularly relates to a kind of compressor silencer.
Background technique
Air compressor, be a kind of equipment in order to pressurized gas, most of air compressors are reciprocating piston types, rotation blade or rotary screw, its mechanical energy by former moving (normally motor) converts the device of gas pressure energy to, is widely used in oil, chemical industry and food manufacturing.
Air compressor is a kind of typical large-sized power plant, and induction noise is that in an important sources, particularly Reciprocting piston compressor of its noise,, at the suction port of cylinder, sound wave radiates from suction port with the form of pulsatile change.The baffler that applies to compressor inlet in prior art adopts impedance complex formula baffler more, to the sound deadening capacity of suction port noise can reach 30 decibels even more than.Yet in prior art in above impedance complex formula baffler resistive noise elimination part owing to being subject to high-frequency air flow pulsatile impact, gentle flow distribution is uneven, exist resistive noise elimination part to be prone to local damage, affect the problem of its resistance sound performance and used life, meanwhile, the noise reduction capability of baffler also awaits further raising.
Model utility content
For solving in above-mentioned prior art in above impedance complex formula baffler resistive noise elimination part owing to being subject to high-frequency air flow pulsatile impact, gentle flow distribution is uneven, exist resistive noise elimination part to be prone to local damage, affect the problem of its resistance sound performance and used life, also await with the noise reduction capability of baffler the problem further improving, the utility model provides a kind of compressor silencer.
For the problems referred to above, the utility model solves problem by the following technical programs: a kind of compressor silencer, comprise the lower shell body that is tubbiness, on the beginning end of lower shell body, be fixedly connected with upper cover, upper cover and lower shell body surround silencing cavity, in silencing cavity, be provided with resistive noise elimination part, on upper cover or lower shell body, be also provided with the air outlet and the suction port that communicate with silencing cavity, also comprise into the inner core that tubular and sidewall are provided with a plurality of through holes, one end of inner core is fixed on the bottom of lower shell body, described resistive noise elimination part comprises a plurality of muffling buckets, described muffling bucket is the tubbiness of lower ending opening, its side is provided with many and is parallel to its axial bar shaped rib, the left and right sides of bar shaped rib is all fixedly connected with resistive sound-absorbing material, and the resistive sound-absorbing material between adjacent two bar shaped ribs forms towards the inner lip protruding of muffling bucket, the bottom of lower shell body is also provided with the muffling bucket interface that quantity equates with muffling bucket quantity, each muffling bucket becomes to be threaded with a muffling bucket interface respectively or bolt is connected, and air outlet communicates with the inner chamber of muffling bucket by muffling bucket interface, suction port is positioned on the sidewall of lower shell body.
With the silencing cavity forming between upper-lower casing and upper cover, form a resistant noise-reducing device; It is the circulation passage that air-flow enters muffling bucket that resistive sound-absorbing material between adjacent two bar shaped ribs forms towards the inner lip protruding of muffling bucket, resistive sound-absorbing material gas flow through time the friction of gas and viscous resistance be converted into thermal energy consumption by acoustic energy fall, the acoustic absorption material that the resistive sound-absorbing material arranging adopts porous and gangs up, as foamed plastics, paper slip etc.The structure setting of a plurality of muffling buckets in resistive noise elimination part above, compared to existing single muffling bucket is set in silencing cavity, in the silencing cavity of same volume, be convenient to obtain larger muffling bucket lateralarea, make gas flow when the utility model, it is good that the silencing cavity centering high frequency noise of per unit volume has better acoustically effective; In while muffling bucket, circulation passage is the setting of lip shape, and it is large that the aperture that lip is opened to both sides when air-flow increases becomes automatically, and the gas that is conducive to reduce muffling bucket, by resistance, is conducive to increase maximum gas passing capacity of the present utility model; The inner core arranging and the structural relation of lower shell body make air be introduced in the gap between lower shell body and inner core by suction port, air flow to resistive noise elimination part by the through hole on inner core again, middle inner core is more than set and is similar to the loose type silencing apparatus of through hole resistance, be so more conducive to erasure effect of the present utility model.
Further technological scheme is:
The top of described muffling bucket is provided with internal thread through hole, in described internal thread through hole, be provided with the connecting screw rod that one-tenth is threaded with it, the upper and lower end of connecting screw rod protrudes with respect to the upper and lower end of muffling bucket respectively, on the connecting screw rod of muffling bucket top outer, be provided with the nut that becomes to be threaded with connecting screw rod, described muffling bucket interface is the cavernous structure that runs through lower shell body bottom, and in cavernous structure, be provided with the rib that two ends are connected with its inwall, on rib, be provided with connecting screw rod hole, the lower end of connecting screw rod becomes to be threaded with connecting screw rod hole.
The muffling bucket of above structural type is simple in structure, after the thread engagement separately in connecting screw rod and connecting screw rod hole, by rotary nut, realize being fastenedly connected of muffling bucket and lower shell body, employing realizes by connecting screw rod the Placement that muffling bucket is connected with lower shell body, being convenient to muffling bucket is set to except connecting screw rod and nut, remaining part all adopts the design of nonmetallic material, and muffling bucket itself belongs to easily damaged parts, like this, muffling bucket is damaging or is exceeding after life cycle, connecting screw rod and nut can be separated from muffling bucket easily, be convenient to follow-up recycling, be conducive to reduce user cost of the present utility model.
The intersection of described cavernous structure and inner side, lower shell body bottom surface is also provided with upper-end surface height higher than the annular boss of lower shell body bottom surface height.Being provided for of above annular boss prevents from preventing laying dust on the surface of contact of muffling bucket and lower shell body when changing muffling bucket, is conducive to the sealing effect on lower shell body and muffling bucket junction surface.
On the lower end of described muffling bucket or its inner tube wall, be provided with the rigidity retainer that at least one is parallel to muffling bucket radial direction, described rigidity retainer comprises circular pipe and at least two connection straps, the two ends of connection strap are fixedly connected with circular pipe with muffling bucket respectively, and uniform circlewise between connection strap, connecting screw rod becomes Spielpassung with circular pipe, and the lower end of muffling bucket is also provided with seal ring.
In more than arranging, between adjacent connection strap, there is space circulation in muffling bucket inner chamber for gas, the circular pipe arranging is for reducing the span between connecting screw rod fulcrum, in the utility model using process because of muffling bucket each when uneven to air inlet, be conducive to reduce the bending deflection that connecting screw rod produces, be beneficial to the sealability between muffling bucket bottom and lower shell body, the seal ring that the lower end of muffling bucket arranges is also conducive to strengthen above-mentioned sealability.
For making air enter into comparatively uniformly inner core with interior space by inner core surrounding, the aperture of the through hole on described inner core is with increasing gradually with the increase of suction port distance separately.
Because the utility model is equivalent to an external pressure vessel when working, for reducing the shockproofness of upper cover under gas, save upper cover material consumption, prevent upper cover depress outside deformation effect its to the sealability between lower cover, cover on described and be also provided with many gussets that are positioned at lower shell body radial direction.
For ease of introducing compressor through gas of the present utility model, also comprise remittance gas hood, described remittance gas hood is the barrel-like structure of upper end open, and its upper end is connected to the outside of lower shell body bottom, air outlet is connected on the bottom surface of remittance gas hood, and the projection of muffling bucket interface in the vertical direction is positioned on the bottom surface of remittance gas hood.
The utility model compared with prior art, has following beneficial effect:
1, the structure setting of a plurality of muffling buckets in above resistive noise elimination part, compared to existing single muffling bucket is set in silencing cavity, in the silencing cavity of same volume, be convenient to obtain larger muffling bucket lateralarea, make gas flow when the utility model, it is good that the silencing cavity centering high frequency noise of per unit volume has better acoustically effective.
2, in muffling bucket, circulation passage is the setting of lip shape, and it is large that the aperture that lip is opened to both sides when air-flow increases becomes automatically, and the gas that is conducive to reduce muffling bucket, by resistance, is conducive to increase maximum gas passing capacity of the present utility model.
3, the inner core arranging and the structural relation of lower shell body make air be introduced in the gap between lower shell body and inner core by suction port, air flow to resistive noise elimination part comparatively uniformly by the through hole on inner core again, middle inner core is more than set and is similar to the loose type silencing apparatus of through hole resistance, so not only be conducive to erasure effect of the present utility model, also stopped the situation generation that resistive noise elimination part is prone to local damage.
Accompanying drawing explanation
Fig. 1 is the structural representation of an embodiment of a kind of compressor silencer described in the utility model;
Fig. 2 is the worm's eye view of an embodiment of a kind of compressor silencer described in the utility model;
Fig. 3 is the worm's eye view of an embodiment of muffling bucket of a kind of compressor silencer described in the utility model.
Name corresponding to graphical indicia is called: 1, lower shell body, 11, muffling bucket interface, 2, inner core, 3, muffling bucket, 31, connecting screw rod, 32, nut, 33, bar shaped rib, 34, rigidity retainer, 341, circular pipe, 342, connection strap, 4, upper cover, 5, gusset, 6, sealing gasket, 7, air outlet, 8, suction port, 9, silencing cavity, 10, converge gas hood.
Embodiment
Below in conjunction with embodiment, the utility model is described in further detail:
Embodiment 1:
As Fig. 1, a kind of compressor silencer that the utility model provides, comprise the lower shell body 1 that is tubbiness, on the beginning end of lower shell body 1, be fixedly connected with upper cover 4, upper cover 4 surrounds silencing cavity 9 with lower shell body 1, in silencing cavity 9, be provided with resistive noise elimination part, on upper cover 4 or lower shell body 1, be also provided with the air outlet 7 and the suction port 8 that communicate with silencing cavity 9, also comprise into the inner core 2 that tubular and sidewall are provided with a plurality of through holes, one end of inner core 2 is fixed on the bottom of lower shell body 1, described resistive noise elimination part comprises a plurality of muffling buckets 3, described muffling bucket 3 is the tubbiness of lower ending opening, its side is provided with many and is parallel to its axial bar shaped rib 33, the left and right sides of bar shaped rib 33 is all fixedly connected with resistive sound-absorbing material, and the resistive sound-absorbing material between adjacent two bar shaped ribs 33 forms towards the inner lip protruding of muffling bucket 3, the bottom of lower shell body 1 is also provided with the muffling bucket interface 11 that quantity equates with muffling bucket 3 quantity, each muffling bucket 3 is threaded with 11 one-tenth, a muffling bucket interface respectively or bolt is connected, and air outlet 7 communicates with the inner chamber of muffling bucket 3 by muffling bucket interface 11, suction port 8 is positioned on the sidewall of lower shell body 1.
With the silencing cavity 9 forming between upper-lower casing 1 and upper cover 4, form a resistant noise-reducing device; It is the circulation passage that air-flow enters muffling bucket 3 that resistive sound-absorbing material between adjacent two bar shaped ribs 33 forms towards the inner lip protruding of muffling bucket 3, resistive sound-absorbing material gas flow through time the friction of gas and viscous resistance be converted into thermal energy consumption by acoustic energy fall, the acoustic absorption material that the resistive sound-absorbing material arranging adopts porous and gangs up, as foamed plastics, paper slip etc.The structure setting of a plurality of muffling buckets 3 in resistive noise elimination part above, compared to existing single muffling bucket is set in silencing cavity 9, in the silencing cavity of same volume, be convenient to obtain larger muffling bucket lateralarea, make gas flow when the utility model, it is good that the silencing cavity 9 centering high frequency noises of per unit volume have better acoustically effective; In while muffling bucket 3, circulation passage is the setting of lip shape, and it is large that the aperture that lip is opened to both sides when air-flow increases becomes automatically, and the gas that is conducive to reduce muffling bucket 3, by resistance, is conducive to increase maximum gas passing capacity of the present utility model; The inner core 2 arranging and the structural relation of lower shell body 1 make air be introduced in the gap between lower shell body 1 and inner core 2 by suction port 8, air flow to resistive noise elimination part by the through hole on inner core 2 again, middle inner core 2 is more than set and is similar to the loose type silencing apparatus of through hole resistance, be so more conducive to erasure effect of the present utility model.
Embodiment 2:
The present embodiment is done further restriction on embodiment 1 basis: as Fig. 1, the top of described muffling bucket 3 is provided with internal thread through hole, in described internal thread through hole, be provided with the connecting screw rod 31 that one-tenth is threaded with it, the upper and lower end of connecting screw rod 31 protrudes with respect to the upper and lower end of muffling bucket respectively, on the connecting screw rod 31 of muffling bucket 3 top outer, be provided with the nut 32 being threaded with 31 one-tenth of connecting screw rods, described muffling bucket interface 11 is for running through the cavernous structure of lower shell body 1 bottom, and in cavernous structure, be provided with the rib that two ends are connected with its inwall, on rib, be provided with connecting screw rod hole, the lower end of connecting screw rod 31 becomes to be threaded with connecting screw rod hole.
The intersection of described cavernous structure and lower shell body 1 inner side, bottom surface is also provided with upper-end surface height higher than the annular boss of lower shell body 1 bottom surface height.
The muffling bucket 3 of above structural type is simple in structure, after the thread engagement separately in connecting screw rod 31 and connecting screw rod hole, by rotary nut 32, realize being fastenedly connected of muffling bucket 3 and lower shell body 1, employing realizes by connecting screw rod 31 Placement that muffling bucket 3 is connected with lower shell body 1, be convenient to muffling bucket 3 to be set to except connecting screw rod 31 and nut 32, remaining part all adopts the design of nonmetallic material, and muffling bucket 3 itself belongs to easily damaged parts, like this, muffling bucket 3 is damaging or is exceeding after life cycle, connecting screw rod 31 and nut 32 can be separated from muffling bucket 3 easily, be convenient to follow-up recycling, be conducive to reduce user cost of the present utility model.Being provided for of above annular boss prevents from preventing laying dust on the surface of contact of muffling bucket 3 and lower shell body 1 when changing muffling bucket 3, is conducive to the sealing effect on lower shell body 1 and muffling bucket 3 junction surfaces.
Embodiment 3:
The present embodiment is done further restriction on embodiment 1 basis: as Fig. 1 and Fig. 3, on the lower end of described muffling bucket 3 or its inner tube wall, be provided with the rigidity retainer 34 that at least one is parallel to muffling bucket 3 radial direction, described rigidity retainer 34 comprises circular pipe 341 and at least two connection straps 342, the two ends of connection strap 342 are fixedly connected with circular pipe 341 with muffling bucket 3 respectively, and uniform circlewise between connection strap 342,341 one-tenth Spielpassung of connecting screw rod 31 and circular pipe, the lower end of muffling bucket 3 is also provided with seal ring.
In more than arranging, between adjacent connection strap 342, there is space circulation in muffling bucket 3 inner chambers for gas, the circular pipe 341 arranging is for reducing the span between connecting screw rod 31 fulcrums, in the utility model using process because of muffling bucket 3 each when uneven to air inlet, be conducive to reduce the bending deflection that connecting screw rod 31 produces, be beneficial to the sealability between muffling bucket 3 bottoms and lower shell body 1, the seal ring that the lower end of muffling bucket 3 arranges is also conducive to strengthen above-mentioned sealability.
Embodiment 4:
The present embodiment is done further restriction on embodiment 1 basis: as Fig. 1 and Fig. 2, for making air enter into comparatively uniformly inner core 2 with interior space by inner core 2 surroundings, the aperture of the through hole on described inner core 2 is with increasing gradually with the increase of suction port 8 distances separately.
Because the utility model is equivalent to an external pressure vessel when working, for reducing the shockproofness of upper cover 4 under gas, save upper cover 4 material consumption, prevent upper cover 4 depress outside deformation effect its to the sealability between lower cover 1, on described upper cover 4, be also provided with many gussets 5 that are positioned at lower shell body 1 radial direction.
For ease of introducing compressor through gas of the present utility model, also comprise remittance gas hood 10, described remittance gas hood 10 is the barrel-like structure of upper end open, and its upper end is connected to the outside of lower shell body 1 bottom, air outlet 7 is connected on the bottom surface of remittance gas hood 10, and the projection of muffling bucket interface 11 in the vertical directions is positioned on the bottom surface of remittance gas hood 10.
Above content is the further description of the utility model being done in conjunction with concrete preferred implementation, can not assert that embodiment of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, not departing from other mode of executions that draw under the technical solution of the utility model, all should be included in protection domain of the present utility model.
Claims (7)
1. a compressor silencer, comprise the lower shell body (1) that is tubbiness, on the beginning end of lower shell body (1), be fixedly connected with upper cover (4), upper cover (4) surrounds silencing cavity (9) with lower shell body (1), silencing cavity is provided with resistive noise elimination part in (9), on upper cover (4) or lower shell body (1), be also provided with the air outlet (7) and the suction port (8) that communicate with silencing cavity (9), it is characterized in that, also comprise into the inner core (2) that tubular and sidewall are provided with a plurality of through holes, one end of inner core (2) is fixed on the bottom of lower shell body (1), described resistive noise elimination part comprises a plurality of muffling buckets (3), described muffling bucket (3) is the tubbiness of lower ending opening, its side is provided with many and is parallel to its axial bar shaped rib (33), the left and right sides of bar shaped rib (33) is all fixedly connected with resistive sound-absorbing material, and the resistive sound-absorbing material between adjacent two bar shaped ribs (33) forms towards the inner lip protruding of muffling bucket (3), the bottom of lower shell body (1) is also provided with the muffling bucket interface (11) that quantity equates with muffling bucket (3) quantity, each muffling bucket (3) becomes to be threaded with a muffling bucket interface (11) respectively or bolt is connected, and air outlet (7) communicate with the inner chamber of muffling bucket (3) by muffling bucket interface (11), suction port (8) is positioned on the sidewall of lower shell body (1).
2. a kind of compressor silencer as claimed in claim 1, it is characterized in that, the top of described muffling bucket (3) is provided with internal thread through hole, in described internal thread through hole, be provided with the connecting screw rod (31) that one-tenth is threaded with it, the upper and lower end of connecting screw rod (31) protrudes with respect to the upper and lower end of muffling bucket respectively, on the connecting screw rod (31) of muffling bucket (3) top outer, be provided with the nut (32) that becomes to be threaded with connecting screw rod (31), described muffling bucket interface (11) is for running through the cavernous structure bottom lower shell body (1), and in cavernous structure, be provided with the rib that two ends are connected with its inwall, on rib, be provided with connecting screw rod hole, the lower end of connecting screw rod (31) becomes to be threaded with connecting screw rod hole.
3. a kind of compressor silencer as claimed in claim 2, is characterized in that, the intersection of inner side, described cavernous structure and lower shell body (1) bottom surface is also provided with upper-end surface height higher than the annular boss of lower shell body (1) bottom surface height.
4. a kind of compressor silencer as claimed in claim 1, it is characterized in that, on the lower end of described muffling bucket (3) or its inner tube wall, be provided with the rigidity retainer (34) that at least one is parallel to muffling bucket (3) radial direction, described rigidity retainer (34) comprises circular pipe (341) and at least two connection straps (342), the two ends of connection strap (342) are fixedly connected with circular pipe (341) with muffling bucket (3) respectively, and uniform circlewise between connection strap (342), connecting screw rod (31) becomes Spielpassung with circular pipe (341), the lower end of muffling bucket (3) is also provided with seal ring.
5. a kind of compressor silencer as claimed in claim 1, is characterized in that, the aperture of the through hole on described inner core (2) is with increasing gradually with the increase of suction port (8) distance separately.
6. a kind of compressor silencer as claimed in claim 1, is characterized in that, is also provided with many gussets (5) that are positioned at lower shell body (1) radial direction on described upper cover (4).
7. as a kind of compressor silencer as described in any one in claim 1 to 6, it is characterized in that, also comprise remittance gas hood (10), described remittance gas hood (10) is the barrel-like structure of upper end open, and its upper end is connected to the outside of lower shell body (1) bottom, air outlet (7) is connected on the bottom surface of remittance gas hood (10), and the projection of muffling bucket interface (11) in the vertical direction is positioned on the bottom surface of remittance gas hood (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420121661.5U CN203742941U (en) | 2014-03-18 | 2014-03-18 | Compressor silencing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420121661.5U CN203742941U (en) | 2014-03-18 | 2014-03-18 | Compressor silencing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203742941U true CN203742941U (en) | 2014-07-30 |
Family
ID=51342750
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420121661.5U Expired - Fee Related CN203742941U (en) | 2014-03-18 | 2014-03-18 | Compressor silencing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203742941U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104153968A (en) * | 2014-03-18 | 2014-11-19 | 成都陵川常友汽车部件制造有限公司 | Compressor silencing mechanism |
-
2014
- 2014-03-18 CN CN201420121661.5U patent/CN203742941U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104153968A (en) * | 2014-03-18 | 2014-11-19 | 成都陵川常友汽车部件制造有限公司 | Compressor silencing mechanism |
| CN104153968B (en) * | 2014-03-18 | 2016-03-23 | 成都陵川常友汽车部件制造有限公司 | A kind of compressor silencer mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140730 Termination date: 20150318 |
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| EXPY | Termination of patent right or utility model |