CN203847351U - Noise reduction device for piston air compressor - Google Patents

Abstract

A noise reduction device for a piston air compressor comprises a silencing cylinder, an intake valve, and an air guide pipe; the silencing cylinder consists of a silencing cylinder I, a silencing cylinder II disposed inside the silencing cylinder I, and sound-absorbing material disposed between the silencing cylinder I and the silencing cylinder II; the intake valve is hermetically disposed inside a cavity of the silencing cylinder II; an intake pipe and an exhaust pipe are connected to two ends of the intake valve; the intake pipe and the exhaust pipe extend out of two ends of the silencing cylinder; one end of the air guide pipe is connected with the exhaust pipe through a valve, and the other end of the air guide pipe is connected with the piston air compressor. The noise reduction device has the effect of reducing noise of the piston air compressor, can protect the environment and the physical health of workers, and is simple in structure and convenient to use.

Description

Piston type air compressor denoising device

Technical field

The utility model relates to a kind of denoising device, relates in particular to a kind of piston type air compressor denoising device.

Background technique

In industrial enterprise, air compressor is widely used.But the influence of noise environment of air compressor, affects the healthy of workman.Therefore, need to reduce the noise that air compressor produces.The noise of air compressor is mainly by the air power noise of inlet, outlet radiation, the compositions such as structural member mechanical noise and driving machine noise and many sound sources noise on noise.For the piston type air compressor normally using in producing,

Further take noise reduction measure more difficult to equipment self, thereby taked taking sound absorption and insulated against sound as main noise reduction scheme, to reduce the sound pressure level of this total sound source.

The noise of air compressor mainly concentrates in the frequency range of 250～4k (Hz), especially with medium-high frequency for very.In piston type air compressor overall noise, induction noise accounts for significant proportion, and therefore installing air inlet sound absorption apparatus additional is the Main Means of controlling overall noise.Sound comes from the vibration of object, and it causes the vibration of contiguous air and form sound wave, and propagates to surrounding in air dielectric.In the time that sound imports object materials surface into, an acoustic energy part is reflected, a part of penetrable material, when some vibration due to object materials or sound are propagated therein and environment friction, change into heat energy by acoustic energy, acoustic energy is depleted, and usually said sound is absorbed by material.

The propagation of sound is the same with the propagation of light, can produce reflection and absorbing phenomenon while running into obstacle.Hard, smooth body surface has obvious reflecting action to sound.Body surface soft, coarse, porous can absorb sound.According to this principle, select rough surface, porous and be packaged in sound absorbing material in confined space as sound absorption apparatus, make sound wave produce and repeatedly reflect, absorb in airtight space, regional decay, to reach the object of noise reduction.

Model utility content

In prior art, the noise of piston type air compressor is large, affect the healthy technical problem of environment and workman, the utility model provides a kind of piston type air compressor denoising device, this device allows the gas that enters piston type air compressor first in airtight hush pipe, flow, by in hush pipe internal reflection, penetrate, absorb, regional decay, to reduce the inflow noise entering in piston type air compressor, reach the object of noise reduction.

To achieve these goals, the technical solution of the utility model is:

A kind of piston type air compressor denoising device, comprising:

Hush pipe, it comprises hush pipe I, is arranged on the hush pipe II in hush pipe I and is arranged on hush pipe I the sound absorbing material between hush pipe II;

Suction valve, in its airtight cavity that is arranged on hush pipe II, two ends are connected with suction tude and steam outlet pipe, and described suction tude and steam outlet pipe extend the both ends of the surface of hush pipe;

Air pipe, its one end is connected with steam outlet pipe by valve, and the other end is connected with piston type air compressor.

Further, the filling thickness of described sound absorbing material is 220～250mm.

Further, described valve front end is provided with airstrainer.

Further, described hush pipe adopts rough surface, porous, sound is had to the sound absorbing material of inhaling the effect of disappearing makes.

Useful technique effect of the present utility model is:

Denoising device of the present utility model has reduced the noise of piston type air compressor, noise is reduced to improved 72dB (A) by the 110dB before transforming (A), the interior noise of 8 times each workday that has reached country's " Code for design of noise cintrol in industrial enterprises " regulation is no more than the requirement of 90dB (A), protect workers ' health, met the quiet requirement of working environment; And the utility model is simple in structure, easy for installation.

Brief description of the drawings

Fig. 1 is structural representation of the present utility model;

Fig. 2 is sectional view of the present utility model.

Reference character

1. hush pipe I; 2. hush pipe II; 3. suction port

4. piston type air compressor; 5. airstrainer; 6. air pipe

7. valve; 8. sound material; 9. suction valve

10. suction tude 11. steam outlet pipes

Embodiment

Below in conjunction with accompanying drawing, embodiment of the present utility model is described in further details.

As depicted in figs. 1 and 2, piston type air compressor denoising device of the present utility model, comprising: hush pipe, and it comprises hush pipe I1, is arranged on the hush pipe II2 in hush pipe I1 and is arranged on hush pipe I1 the sound absorbing material 8 between hush pipe II2;

Piston type air compressor denoising device of the present utility model also comprises suction valve 9, and in its airtight cavity that is arranged on hush pipe II2, two ends are connected with suction tude 10 and steam outlet pipe 11, the both ends of the surface that described suction tude 10 and steam outlet pipe 11 extend hush pipe;

Also comprise air pipe 6, its one end is connected with steam outlet pipe 11 by valve 7, and the other end is connected with piston type air compressor 4.

In the present embodiment, for ensureing sound-absorbing effect, the filling thickness of described sound absorbing material 8 is 220～250mm.

In the present embodiment, described valve 7 front ends are provided with airstrainer 5.

Described hush pipe adopts rough surface, porous, sound is had to the sound absorbing material of inhaling the effect of disappearing makes.In the present embodiment, hush pipe I1 is that a diameter is ￠ 320mm, the containment cylinder that wall thickness is 20mm; Hush pipe II2 is that a diameter is ￠ 75mm, the containment cylinder that wall thickness is 10mm.

Working principle: as depicted in figs. 1 and 2, gas enters in suction valve 9 from suction port 3 along the direction of arrow from suction tude 10, then enter in steam outlet pipe 11, in this process, gas sound is decayed through interreflection, absorption, regionality in airtight hush pipe II2, and after sound absorbing material 8 absorbs, inflow noise reduces greatly, gas filters through airstrainer 5, enters piston type air compressor 4 by valve 7 through air pipe 6, thereby has reached the object of noise reduction.

Use denoising device of the present utility model to reduce the noise of piston type air compressor, noise is reduced to improved 72dB (A) by the 110dB before transforming (A), the interior noise of 8 times each workday that has reached country's " Code for design of noise cintrol in industrial enterprises " regulation is no more than the requirement of 90dB (A), protect workers ' health, met the quiet requirement of working environment; And the utility model is simple in structure, easy for installation.

Finally explanation is, above embodiment is only unrestricted in order to the technical solution of the utility model to be described, although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement the technical solution of the utility model, and not departing from aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of claim scope of the present utility model.

Claims (4)

1. a piston type air compressor denoising device, is characterized in that, comprising:

Hush pipe, it comprises hush pipe I (1), is arranged on the hush pipe II (2) in hush pipe I (1) and is arranged on hush pipe I (1) sound absorbing material (8) between hush pipe II (2);

Suction valve (9), in its airtight cavity that is arranged on hush pipe II (2), two ends are connected with suction tude (10) and steam outlet pipe (11), the both ends of the surface that described suction tude (10) and steam outlet pipe (11) extend hush pipe;

Air pipe (6), its one end is connected with steam outlet pipe (11) by valve (7), and the other end is connected with piston type air compressor (4).

2. piston type air compressor denoising device according to claim 1, is characterized in that: the filling thickness of described sound absorbing material (8) is 220～250mm.

3. piston type air compressor denoising device according to claim 1 and 2, is characterized in that: described valve (7) front end is provided with airstrainer (5).

4. piston type air compressor denoising device according to claim 1 and 2, is characterized in that: described hush pipe adopts rough surface, porous, sound is had to the sound absorbing material of inhaling the effect of disappearing makes.