CN203742942U - Silencer for compressor inlet - Google Patents
Silencer for compressor inlet Download PDFInfo
- Publication number
- CN203742942U CN203742942U CN201420121668.7U CN201420121668U CN203742942U CN 203742942 U CN203742942 U CN 203742942U CN 201420121668 U CN201420121668 U CN 201420121668U CN 203742942 U CN203742942 U CN 203742942U
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- CN
- China
- Prior art keywords
- lower shell
- suction port
- shell body
- upper cover
- compressor
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Abstract
The utility model discloses a silencer for a compressor inlet. The silencer comprises a lower shell which is in a barrel shape, 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 the upper cover or the lower shell is further provided with an air outlet and an air inlet which are communicated with the silencing cavity. The silencer further comprises an inner tube which is in a cylinder shape, and the side wall of the inner tube is provided with a plurality of through holes. One end of the inner tube is fixed at the bottom of the lower shell. The impendence silencing part comprises a packing rack and impendence packing, the packing rack is a spiral disk which is formed by a metal thin plate in a winding mode, and the impendence packing is arranged in a gap in the spiral disk. The air outlet is rightly opposite to the center of the spiral disk, and the air inlet is formed in the side wall of the lower shell. The silencer for the compressor inlet is good in silencing effect, and beneficial 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 suction port of compressor baffler.
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.But in above impedance complex formula baffler, resistive noise elimination part is owing to being subject to high-frequency air flow pulsatile impact in prior art, gentle flow distribution inequality, exists resistive noise elimination part to be prone to local damage, affects the problem of its resistance sound performance and used life.
Model utility content
For solve above-mentioned however 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 inequality, exist resistive noise elimination part to be prone to local damage, the problem that affects its resistance sound performance and used life, the utility model provides a kind of suction port of compressor baffler.
For the problems referred to above, the utility model solves problem by the following technical programs: a kind of suction port of compressor baffler, 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 multiple through holes, one end of inner core is fixed on the bottom of lower shell body, described resistive noise elimination part comprises stuffing frame and resistive filler, described stuffing frame is the helical disk being formed by sheetmetal coiling, resistive filler is arranged in the gap on helical disk, air outlet is the central authorities to helical disk just, suction port is positioned on the sidewall of lower shell body.
Described helical disk serves as reasons using sheetmetal one side as axis, and the remaining part of thin plate rotates around axis, the structure with helical gap of formation.Form a resistant noise-reducing device with the silencing cavity forming between upper-lower casing and upper cover; The position relationship of air outlet and resistive noise elimination part makes mobile need through gap helical disk on of air in silencing cavity, and be arranged on resistive filler in gap gas flow through time friction to gas and viscous resistance acoustic energy be converted into thermal energy consumption fall, the acoustic absorption material that the resistive filler arranging adopts porous and gangs up, as foamed plastics.Above stuffing frame shape be arranged so that gas flow is in the time of the utility model, the resistive noise elimination part centering high frequency noise acoustically effective of per unit volume is good; 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:
For restriction air only can be by the gap on suction port, through hole, helical disk, air outlet turnover the utility model, be beneficial to the each parts soundproof effect of the utility model, prevent that air from crossing the gap on through hole and helical disk by the upper end of inner core and stuffing frame, the upper-end surface of described resistive noise elimination part, lower shell body and inner core is in the same plane.Further, for ensureing the sealability of upper cover to resistive noise elimination part, upper cover and lower shell body upper end, on the lower end surface of described upper cover, be also provided with sealing gasket.
On described stuffing frame, be also provided with arc plate, described arc plate with on stuffing frame the outer ring in close outside be fixedly connected with, and arc plate and described outer ring form the annulus of a sealing, is also provided with the inlet hole communicating with gap on helical disk on arc plate.More than be arranged so that the outermost circle of stuffing frame is a close ring, be conducive to improve the rigidity of stuffing frame, wash away the ability of distortion to strengthen its opposing air.
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 in the time working, for reducing the shockproofness of upper cover under gas, save upper cover material consumption, prevent that upper cover from depressing its sealability to lower cover or miscellaneous part upper end of deformation effect outside, cover on described and be also provided with many gussets that are positioned at lower shell body radial direction.
Increase gas of the present utility model by resistance for preventing that stuffing frame part, gap on helical disk under the washing away of air blast from diminishing, in the gap on described helical disk, be also provided with the shape maintenance support that multiple two ends are fixedly connected with both sides, gap stuffing frame respectively.
The utility model compared with prior art, has following beneficial effect:
1, the silencing cavity forming between upper-lower casing and upper cover forms a resistant noise-reducing device, and medium and low frequency acoustically effective is remarkable; The position relationship of air outlet and resistive noise elimination part makes mobile need through gap helical disk on of air in silencing cavity, and be arranged on resistive filler in gap gas flow through time friction to gas and viscous resistance acoustic energy be converted into thermal energy consumption fall, above stuffing frame shape be arranged so that gas flow is in the time of the utility model, the resistive noise elimination part centering high frequency noise acoustically effective of per unit volume is good, under the same noise reduction of centering high frequency noise, adopt this structure to be conducive to reduce the volume of resistive noise elimination part.
2, 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.
3, the structure of above resistive noise elimination part, air is flowed from outside to inside by the gap on helical disk, on airflow direction cross section, air resistance approaches, compared to the existing structural type that is directly entered into resistive filling tube inner side by outside through resistive sizing vat sidewall, avoided resistive filler place of close suction port place throughput large, be subject to high-frequency air flow pulsatile impact, resistive noise elimination part is prone to local damage, affects the problem of its resistance sound performance and used life.
Brief description of the drawings
Fig. 1 is the structural representation of an embodiment of a kind of suction port of compressor described in the utility model baffler.
Name corresponding to graphical indicia is called: 1, lower shell body, 2, inner core, 3, resistive noise elimination part, 31, resistive filler, 32, stuffing frame, 33, arc plate, 34, shape keeps supporting, 4, upper cover, 5, gusset, 6, sealing gasket, 7, air outlet, 8, suction port, 9, silencing cavity.
Embodiment
Below in conjunction with embodiment, the utility model is described in further detail:
Embodiment 1:
As Fig. 1, a kind of suction port of compressor baffler 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 3, 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 multiple through holes, one end of inner core 2 is fixed on the bottom of lower shell body 1, described resistive noise elimination part 3 comprises stuffing frame 32 and resistive filler 31, the helical disk of described stuffing frame 32 for being formed by sheetmetal coiling, resistive filler 31 is arranged in the gap on helical disk, air outlet 7 is the central authorities to helical disk just, suction port 8 is positioned on the sidewall of lower shell body 1.
Helical disk described in the present embodiment is served as reasons using rectangular sheetmetal one side as axis, and the remaining part of thin plate rotates around axis, the structure with helical gap of formation.The utility model is 0.75Mpa for exhaust pressure simultaneously, air displacement is the screw compressor of 1800m3/H, and in suction tude, be provided with two the utility model, for reducing the resistance of the resistive filler of airflow passes, the width in helical gap is set to 60mm, and the height of stuffing frame 32 is set to 80mm, the foamed plastics that the resistive filler of setting adopts porous and gangs up, the through-hole aperture being arranged on inner core 2 sidewalls is distributed within the scope of 1.5-3mm, and boring rate is 3%.
Embodiment 2:
The present embodiment does further restriction on embodiment 1 basis: as Fig. 1, for restriction air only can pass in and out the utility model by the gap on suction port 8, through hole, helical disk, air outlet 7, be beneficial to the each parts soundproof effect of the utility model, prevent that air from crossing the gap on through hole and helical disk by the upper end of inner core 2 and stuffing frame 32, the upper-end surface of described resistive noise elimination part 3, lower shell body 1 and inner core 2 is in the same plane.Further, for ensureing the sealability of upper cover 4 to resistive noise elimination part 3, upper cover 4 and lower shell body 1 upper end, on the lower end surface of described upper cover 4, be also provided with sealing gasket 6.
Embodiment 3:
The present embodiment does further restriction on embodiment 1 basis: as Fig. 1, on described stuffing frame 32, be also provided with arc plate 33, described arc plate 33 with on stuffing frame 32 the outer ring in close outside be fixedly connected with, and arc plate 33 and described outer ring form the annulus of a sealing, are also provided with the inlet hole communicating with gap on helical disk on arc plate 33.More than be arranged so that the outermost circle of stuffing frame 32 is a close ring, be conducive to improve the rigidity of stuffing frame 32, wash away the ability of distortion to strengthen its opposing air.
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.
Embodiment 4:
The present embodiment does further restriction on embodiment 1 basis: as Fig. 1, because the utility model is equivalent to an external pressure vessel in the time working, for reducing the shockproofness of upper cover 4 under gas, save upper cover 4 material consumption, prevent that upper cover 4 from depressing its sealability to lower cover 1 or miscellaneous part upper end of deformation effect outside, on described upper cover 4, be also provided with many gussets 5 that are positioned at lower shell body 1 radial direction.
Increase gas of the present utility model by resistance for preventing that stuffing frame 32 part, gap on helical disk under the washing away of air blast from diminishing, in the gap on described helical disk, be also provided with the shape maintenance support 34 that multiple two ends are fixedly connected with both sides, gap stuffing frame 32 respectively.
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 suction port of compressor baffler, 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 (3), 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 multiple through holes, one end of inner core (2) is fixed on the bottom of lower shell body (1), described resistive noise elimination part (3) comprises stuffing frame (32) and resistive filler (31), the helical disk of described stuffing frame (32) for being formed by sheetmetal coiling, resistive filler (31) is arranged in the gap on helical disk, the just central authorities to helical disk of air outlet (7), suction port (8) is positioned on the sidewall of lower shell body (1).
2. a kind of suction port of compressor as claimed in claim 1 baffler, is characterized in that, the upper-end surface of described resistive noise elimination part (3), lower shell body (1) and inner core (2) is in the same plane.
3. a kind of suction port of compressor as claimed in claim 2 baffler, is characterized in that, is also provided with sealing gasket (6) on the lower end surface of described upper cover (4).
4. a kind of suction port of compressor as claimed in claim 1 baffler, it is characterized in that, on described stuffing frame (32), be also provided with arc plate (33), described arc plate (33) with on stuffing frame (32) the outer ring in close outside be fixedly connected with, and arc plate (33) and described outer ring form the annulus of a sealing, and arc plate is also provided with the inlet hole communicating with gap on helical disk on (33).
5. a kind of suction port of compressor as claimed in claim 1 baffler, 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. as a kind of suction port of compressor baffler as described in any one in claim 1 to 5, it is characterized in that, on described upper cover (4), be also provided with many gussets (5) that are positioned at lower shell body (1) radial direction.
7. as a kind of suction port of compressor baffler as described in any one in claim 1 to 5, it is characterized in that, in the gap on described helical disk, be also provided with the shape that multiple two ends are fixedly connected with respectively at both sides, gap stuffing frames (32) and keep supporting (34).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420121668.7U CN203742942U (en) | 2014-03-18 | 2014-03-18 | Silencer for compressor inlet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420121668.7U CN203742942U (en) | 2014-03-18 | 2014-03-18 | Silencer for compressor inlet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203742942U true CN203742942U (en) | 2014-07-30 |
Family
ID=51342751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420121668.7U Expired - Fee Related CN203742942U (en) | 2014-03-18 | 2014-03-18 | Silencer for compressor inlet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203742942U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104153969A (en) * | 2014-03-18 | 2014-11-19 | 成都陵川常友汽车部件制造有限公司 | Silencer for inlet of compressor |
| CN110821783A (en) * | 2018-08-10 | 2020-02-21 | 昆西压缩机有限责任公司 | Noise reduction silencer with spiral chamber for compressor |
-
2014
- 2014-03-18 CN CN201420121668.7U patent/CN203742942U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104153969A (en) * | 2014-03-18 | 2014-11-19 | 成都陵川常友汽车部件制造有限公司 | Silencer for inlet of compressor |
| CN110821783A (en) * | 2018-08-10 | 2020-02-21 | 昆西压缩机有限责任公司 | Noise reduction silencer with spiral chamber for compressor |
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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 |
|
| EXPY | Termination of patent right or utility model |