CN2561966Y

CN2561966Y - Air-inlet filtering silencer for air compressor

Info

Publication number: CN2561966Y
Application number: CN 02272170
Authority: CN
Inventors: 梁少明
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-07-30
Filing date: 2002-07-30
Publication date: 2003-07-23
Anticipated expiration: 2012-07-30

Abstract

The utility model discloses an air inlet filtering muffler for an air compressor; because the noise source of the prior air compressor is mainly from an air inlet, so that the air inlet noise shall be effectively controlled. A small counter bored hole of an outer shell upper part of the utility model is inwardly arranged with a filtering noise elimination component, the lower part is provide with an expanding space containing the air compressor inlet valve composed by a large counter bored hole, the air inlet cover presses the filtering noise elimination component to be tightly adhered on a shockproof buffer ring at the bottom part of the small counter bored hole, and to be tightly fixed on the outer shell cover with screw bolts, the outer shell is connected with a connecting device of the air compressor air inlet through the screw bolts, and the a leak-proof sealing ring is provided between the contact surface of the outer shell and the connecting device; after the air passes the device, the air inlet noise is attenuated and absorbed step by step, and the impurities in the gas are also filtered with a certain degree; the utility model is widely applicable to various air compressors.

Description

Air compressor air inlet filtering silencing apparatus

Technical field

The utility model relates to the filtering silencing apparatus of air compressor, the filtering silencing apparatus of particularly a kind of slide plate (blade) formula screw air compressor.

Background technique

Air compressor is a kind of strong noise equipment, is the most basic effective measures of noise control from sound source control noise.The noise of air compressor is a kind of comprehensive mechanical noise, though its each part all can send noise in the running, but the strong and weak frequency of noise is different, generally, its suction port is owing to directly communicate with atmosphere, cause induction noise than the high 5～10dB in other positions (A), therefore, the induction noise of air compressor is the main sound source of compressor noise.

Summary of the invention

In order to solve the deficiencies in the prior art, the utility model provides a kind of air inlet filtering silencing apparatus that can effectively control the air compressor air intake noise.

The technological scheme that its technical problem that solves the utility model adopts is:

Air compressor air inlet filtering silencing apparatus, shell upper has little counterbore, the bottom has big counterbore to constitute the expansive space that contains air compressor gas valve, between two counterbores vent hole is arranged, the filtering sound attenuation assembly is housed in the little counterbore, air-inlet cover is pushed down the shockproof cushioning circle that the filtering sound attenuation assembly is close to little counterbore bottom, and with bolton on shell, have suction port on the air-inlet cover, shell links to each other by the connection set of bolt with air compressor suction port place, and the leakproof seal circle is arranged between the surface of contact of shell and connection set; The filtering sound attenuation assembly is connected to whole a composition by flat shape filtering noise elimination dish and special-shaped filtering noise elimination dish by ring-bolt, form the noise attentuation interval between flat shape filtering noise elimination dish and the special-shaped filtering noise elimination dish, have between preposition expansion regions between filtering sound attenuation assembly and the air-inlet cover; The filtering sound attenuation assembly is to have microcellular structure by the metal particle sintering; Be useful on the connection positioning step that air-strainer is installed on the shell, be useful on the bolt that air-strainer is installed on the air-inlet cover.

The beneficial effects of the utility model are: because air inlet filtering silencing apparatus is installed in the air compressor air intake mouth and has contained the suction valve of suction port outer end, when air enters, through between the preposition expansion regions between filtering sound attenuation assembly and the air-inlet cover, behind the microcellular structure of flat shape filtering noise elimination dish and special-shaped filtering noise elimination dish and formed noise attentuation interval thereof, the big formed expansive space of counterbore, induction noise is decayed step by step, is absorbed, thereby effectively reduce noise, and make the impurity in the gas obtain filtration to a certain degree.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is the utility model embodiment's a structural drawing;

Fig. 2 is the plan view of Fig. 1.

Embodiment

With reference to Fig. 1, air compressor air inlet filtering silencing apparatus, its shell 12 is installed on the connection set 17 at air compressor air intake mouth 16 places by bolt 14, the seal ring 15 that prevents the fluid seepage is arranged between the surface of contact of shell 12 and connection set 17, the big counterbore 11 of shell 12 bottoms constitutes the expansive space that contains air compressor gas valve 13, and double dot dash line is depicted as original detail on the air compressor among the figure; Little counterbore 18 is arranged at shell 12 tops, and between the big counterbore 11 vent hole 3 is arranged, in the little counterbore 18 filtering sound attenuation assembly 2 is housed, air-inlet cover 1 is pushed down the shockproof cushioning circle 10 that filtering sound attenuation assembly 2 is close to little counterbore 18 bottoms, and be fastened on the shell 12 with bolt 9, have suction port 6 on the air-inlet cover 1, as shown in Figure 2.

Filtering sound attenuation assembly 2 is by flat shape filtering noise elimination dish 2 ' and special-shaped filtering noise elimination dish 2 " be connected to whole a composition by ring-bolt 5; flat shape filtering noise elimination dish 2 ' and special-shaped filtering noise elimination dish 2 " between formation noise attentuation interval 8, have between preposition expansion regions 7 between filtering sound attenuation assembly 2 and the air-inlet cover 1.The filtering sound attenuation assembly has a microcellular structure by what the metal particle sintering was made.When air during from the entering of suction port 6, through between preposition expansion regions 7, the special-shaped filtering noise elimination dish 2 of the flat shape filtering noise elimination dish 2 ' of band microcellular structure, noise attentuation interval 8, band microcellular structure " and big counterbore 11 formed expansive spaces after; induction noise is decayed step by step, is absorbed; thus effectively reduce noise, and make the impurity in the gas obtain filtration to a certain degree.

Generally speaking, in order to reach better air filtering effect, can be on this air inlet filtering silencing apparatus external air-strainer, at this moment, can realize connecting by connection positioning step 19 on the shell 12 and the bolt 4 on the air-inlet cover 1.

Claims

1. air compressor air inlet filtering silencing apparatus, it is characterized in that little counterbore (18) is arranged at shell (12) top, the bottom has big counterbore (11) to constitute the expansive space that contains air compressor gas valve (13), vent hole (3) is arranged between two counterbores, filtering sound attenuation assembly (2) is housed in the little counterbore (18), air-inlet cover (1) is pushed down the shockproof cushioning circle (10) that filtering sound attenuation assembly (2) is close to little counterbore (18) bottom, and be fastened on the shell (12) with bolt (9), have suction port (6) on the air-inlet cover (1), the connection set (17) that shell (12) is located by bolt (14) and air compressor suction port (16) links to each other, and between the surface of contact of shell (12) and connection set (17) leakproof seal circle (15) is arranged.

2. air compressor air inlet filtering silencing apparatus according to claim 1, it is characterized in that described filtering sound attenuation assembly (2) is connected to whole a composition by flat shape filtering noise elimination dish (2 ') and special-shaped filtering noise elimination dish (2 ") by ring-bolt (5); formation noise attentuation interval (8) between flat shape filtering noise elimination dish (2 ') and the special-shaped filtering noise elimination dish (2 ") has (7) between preposition expansion regions between filtering sound attenuation assembly (2) and the air-inlet cover (1).

3. air compressor air inlet filtering silencing apparatus according to claim 1 and 2 is characterized in that described filtering sound attenuation assembly (2) is to have microcellular structure by the metal particle sintering.

4. air compressor air inlet filtering silencing apparatus according to claim 1 is characterized in that being useful on the connection positioning step (19) that air-strainer is installed on the shell (12), is useful on the bolt (4) that air-strainer is installed on the air-inlet cover (1).