A compressor silencer

Abstract

The invention discloses a compressor silencing mechanism which comprises a lower shell. An upper cover is fixedly connected with the head end of the lower shell, the upper cover and the lower shell define a silencing cavity, a resistive silencing portion 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 mechanism further comprises a cylindrical inner barrel, multiple through holes are formed in the side wall of the inner barrel, the resistive silencing portion comprises multiple silencing barrels which are open at the lower ends, multiple strip-shaped ridges parallel to the axial direction of the silencing barrels are arranged on the side faces of the silencing barrels, and resistive sound absorption materials are fixedly connected with the left side and the right side of each strip-shaped ridge respectively. The resistive sound absorption material between every two adjacent strip-shaped ridges form a lip protruding to the inside of the silencing barrels, and the bottom of the lower shell is further provided with silencing barrel connectors which are the same as the silencing barrels in number. The compressor silencing mechanism is good in silencing effect, and can conveniently avoid the phenomenon that the resistive silencing portion is easily damaged due to large partial loads.

Description

technical field

[0001] The invention relates to an air compressor noise reduction device, in particular to a compressor noise reduction mechanism. Background technique

[0002] An air compressor is a device used to compress gas. Most air compressors are reciprocating pistons, rotating blades or rotating screws, which convert the mechanical energy of the prime mover (usually an electric motor) into gas pressure energy. Widely used in petroleum, chemical and food manufacturing industries.

[0003] The air compressor is a typical large-scale power equipment, and the intake noise is an important source of its noise, especially in the reciprocating piston compressor, at the suction port of the cylinder, the sound wave is radiated from the intake port in the form of pulsating changes . In the prior art, the muffler applied to the air inlet of the compressor mostly adopts an impedance compound muffler, and the muffler for the noise of the air inlet can reach 30 decibels or more. ...

Examples

Embodiment 1

[0026] Such as figure 1 , a compressor muffler mechanism provided by the present invention comprises a barrel-shaped lower housing 1, an upper cover 4 is fixedly connected to the beginning end of the lower housing 1, and the upper cover 4 and the lower housing 1 enclose a muffler cavity 9 , the muffler cavity 9 is provided with a resistive muffler, the upper cover 4 or the lower housing 1 is also provided with an air outlet 7 and an air inlet 8 communicating with the muffler cavity 9, and also includes a cylindrical shape with multiple side walls. An inner cylinder 2 with a through hole, one end of the inner cylinder 2 is fixed on the bottom of the lower casing 1, the resistive noise-absorbing part includes a plurality of noise-absorbing barrels 3, the sound-absorbing barrels 3 are in the shape of a barrel with an open lower end, and its side is provided with A plurality of strip-shaped ribs 33 parallel to its axial direction, the left and right sides of the strip-shaped ribs ...

Embodiment 2

[0029] This embodiment is further limited on the basis of embodiment 1: as figure 1, the top of the sound-absorbing barrel 3 is provided with an internally threaded through hole, and a connecting screw 31 threadedly connected thereto is arranged in the internally threaded through-hole, and the upper and lower ends of the connecting screw 31 protrude respectively relative to the upper and lower ends of the sound-absorbing barrel The connecting screw 31 on the outside of the top of the sound-absorbing barrel 3 is provided with a nut 32 threadedly connected with the connecting screw 31. The sound-absorbing barrel interface 11 is a hole-like structure that runs through the bottom of the lower housing 1, and the hole-like structure is provided with The two ends of the rib connected with its inner wall are provided with a connecting screw hole, and the lower end of the connecting screw 31 is threadedly connected with the connecting screw hole.

[0030] The intersection of the hole s...

Embodiment 3

[0033] This embodiment is further limited on the basis of embodiment 1: as figure 1 and image 3 , the lower end of the sound-absorbing barrel 3 or its inner wall is provided with at least one rigidity cage 34 parallel to the radial direction of the sound-absorbing barrel 3, and the rigidity cage 34 includes a circular tube 341 and at least two connecting bars 342 , the two ends of the connection bar 342 are fixedly connected with the sound-absorbing bucket 3 and the circular pipe 341 respectively, and the connecting strips 342 are evenly distributed in a ring shape, the connecting screw 31 and the circular pipe 341 form a clearance fit, and the lower end of the sound-absorbing bucket 3 is still A sealing ring is provided.

[0034] In the above settings, there are gaps between adjacent connecting bars 342 for the circulation of gas in the inner cavity of the sound-absorbing bucket 3, and the circular tube 341 provided is used to reduce the span between the fulcrums of the con...

technical field

[0001] The invention relates to an air compressor noise reduction device, in particular to a compressor noise reduction mechanism. Background technique

[0002] An air compressor is a device used to compress gas. Most air compressors are reciprocating pistons, rotating blades or rotating screws, which convert the mechanical energy of the prime mover (usually an electric motor) into gas pressure energy. Widely used in petroleum, chemical and food manufacturing industries.

[0003] The air compressor is a typical large-scale power equipment, and the intake noise is an important source of its noise, especially in the reciprocating piston compressor, at the suction port of the cylinder, the sound wave is radiated from the intake port in the form of pulsating changes . In the prior art, the muffler applied to the air inlet of the compressor mostly adopts an impedance compound muffler, and the muffler for the noise of the air inlet can reach 30 decibels or more. ...

Examples

Embodiment 1

[0026] Such as figure 1 , a compressor muffler mechanism provided by the present invention comprises a barrel-shaped lower housing 1, an upper cover 4 is fixedly connected to the beginning end of the lower housing 1, and the upper cover 4 and the lower housing 1 enclose a muffler cavity 9 , the muffler cavity 9 is provided with a resistive muffler, the upper cover 4 or the lower housing 1 is also provided with an air outlet 7 and an air inlet 8 communicating with the muffler cavity 9, and also includes a cylindrical shape with multiple side walls. An inner cylinder 2 with a through hole, one end of the inner cylinder 2 is fixed on the bottom of the lower casing 1, the resistive noise-absorbing part includes a plurality of noise-absorbing barrels 3, the sound-absorbing barrels 3 are in the shape of a barrel with an open lower end, and its side is provided with A plurality of strip-shaped ribs 33 parallel to its axial direction, the left and right sides of the strip-shaped ribs ...

Embodiment 2

[0029] This embodiment is further limited on the basis of embodiment 1: as figure 1, the top of the sound-absorbing barrel 3 is provided with an internally threaded through hole, and a connecting screw 31 threadedly connected thereto is arranged in the internally threaded through-hole, and the upper and lower ends of the connecting screw 31 protrude respectively relative to the upper and lower ends of the sound-absorbing barrel The connecting screw 31 on the outside of the top of the sound-absorbing barrel 3 is provided with a nut 32 threadedly connected with the connecting screw 31. The sound-absorbing barrel interface 11 is a hole-like structure that runs through the bottom of the lower housing 1, and the hole-like structure is provided with The two ends of the rib connected with its inner wall are provided with a connecting screw hole, and the lower end of the connecting screw 31 is threadedly connected with the connecting screw hole.

[0030] The intersection of the hole s...

Embodiment 3

[0033] This embodiment is further limited on the basis of embodiment 1: as figure 1 and image 3 , the lower end of the sound-absorbing barrel 3 or its inner wall is provided with at least one rigidity cage 34 parallel to the radial direction of the sound-absorbing barrel 3, and the rigidity cage 34 includes a circular tube 341 and at least two connecting bars 342 , the two ends of the connection bar 342 are fixedly connected with the sound-absorbing bucket 3 and the circular pipe 341 respectively, and the connecting strips 342 are evenly distributed in a ring shape, the connecting screw 31 and the circular pipe 341 form a clearance fit, and the lower end of the sound-absorbing bucket 3 is still A sealing ring is provided.

[0034] In the above settings, there are gaps between adjacent connecting bars 342 for the circulation of gas in the inner cavity of the sound-absorbing bucket 3, and the circular tube 341 provided is used to reduce the span between the fulcrums of the con...

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