CN102465745B

CN102465745B - Silencer

Info

Publication number: CN102465745B
Application number: CN 201010551904
Authority: CN
Inventors: 马建洪
Original assignee: WUXI HUDAI XINGHONG QIYUAN PURIFICATION EQUIPMENT FACTORY
Current assignee: WUXI HUDAI XINGHONG QIYUAN PURIFICATION EQUIPMENT FACTORY
Priority date: 2010-11-10
Filing date: 2010-11-10
Publication date: 2013-08-07
Anticipated expiration: 2030-11-10
Also published as: CN102465745A

Abstract

The invention discloses a silencer. The silencer comprises an outer pipe and an inner pipe, both the outer pipe and the inner pipe are conical pipes with small tops and big bottoms, and a space is reserved between the outer pipe and the inner pipe which have equal taper. A middle partition plate is arranged on the inner side of the upper part of the outer pipe, a space is reserved between the middle partition plate and the upper end of the outer pipe, four sides of the middle partition plate are connected with the inner wall of the outer pipe, the center of the middle partition plate is provided with a hole, the diameter of the hole is equal to that of the upper end of the inner pipe, and the upper end of the inner pipe is connected with four sides of the hole in the middle partition plate. The silencer is characterized in that: the short conical pipe with the small top and the big bottom is arranged in the inner pipe, the taper of the short conical pipe is greater than that of the inner pipe, and the lower end of the short conical pipe is connected with the inner wall of the inner pipe in the circumferential direction. The silencer has a good silencing effect. The silencer is suitable for reducing noise generated at an intake/exhaust port of an air compressor, an exhaust port of an automobile engine, an exhaust port of a factory and the like.

Description

A kind of baffler

Technical field

The present invention relates to a kind of silencer.Specifically, be the baffler that reduces the noise of relief openings generations such as air compressor import/exhaust mouth, air vent of automobile engine and factory's relief opening.

Background technique

As everyone knows, the exhaust ports of its relief opening and some factories all can produce noise when air compressor its import/exhaust mouth place of when work, motor car engine work.For eliminating these noises, in suction port or the exhaust ports of these equipment or occasion baffler is installed all.Described baffler contains outer tube and interior pipe, and described outer tube and interior pipe are up-small and down-big conical tube and the tapering of the two equates.There is central diaphragm the inboard on outer tube top, and central diaphragm and outer tube leave spacing between the upper end, link to each other with outer tube wall around the central diaphragm, and the central diaphragm center is porose, and the diameter in this hole equates with interior pipe upper end diameter and interior pipe upper end links to each other all around with hole on the central diaphragm.Under the installment state, the outer tube upper end links to each other with suction port or the relief opening of relevant device or occasion.During work, enter from outer tube upper end and to enter interior pipe after noise the gas of outer tube is absorbed by central diaphragm earlier, further absorbed by the tube wall of interior pipe, carry out sound insulation by the spacing between interior pipe and outer tube again, realize reducing the purpose of noise.Because above-mentioned baffler only is made of the central diaphragm of outer tube, interior pipe and people's outer tube upper inner, during work, can only realize the reduction of noise by the sound insulation of the spacing between the absorption of central diaphragm and inner pipe wall, interior pipe and outer tube, erasure effect is relatively poor.

Summary of the invention

Problem to be solved in the utility model provides a kind of baffler.This baffler, good muffling effect.

For addressing the above problem, take following technological scheme:

Baffler of the present invention comprises outer tube and interior pipe, and described outer tube and interior pipe are up-small and down-big conical tube, leaves spacing between outer tube and interior pipe and the tapering of the two equates.There is central diaphragm the inboard on outer tube top, and central diaphragm and outer tube leave spacing between the upper end, link to each other with outer tube wall around the central diaphragm, and the central diaphragm center is porose, and the diameter in this hole equates with interior pipe upper end diameter and interior pipe upper end links to each other all around with hole on the central diaphragm.In the pipe up-small and down-big short Taper Pipe is arranged in being characterized in, the tapering of this short Taper Pipe is greater than the tapering of interior pipe, and its lower end circumferentially links to each other with the inwall of interior pipe.

The further improvement of the present invention scheme is, up big and down small horn mouth is arranged on the central diaphragm, around the equal diameters in the hole on horn mouth lower end diameter and the central diaphragm and the horn mouth lower end with central diaphragm on the hole around link together.

Wherein, bell-mouthed upper end diameter is greater than interior pipe upper end diameter.

Described short Taper Pipe has two at least, and short Taper Pipe is uniform along the inner chamber above-below direction of interior pipe.That of the top lacked between Taper Pipe upper end and central diaphragm, all left spacing between adjacent two short Taper Pipes.

The further improvement of the present invention scheme is, the outer tube upper end have mouthpiece, described mouthpiece be up-small and down-big conical tube and its tapering greater than outer tube, the mouthpiece lower end diameter equates with the outer tube upper end diameter and the two links together.

Further improvement project of the present invention is that the mouthpiece upper end has flange.

Take such scheme, have the following advantages:

By such scheme as can be seen, owing to be provided with up-small and down-big short Taper Pipe in the interior pipe, this weak point Taper Pipe can arrange multistage as required.During work, except the sound insulation by the spacing between the absorption of original central diaphragm and inner pipe wall, interior pipe and outer tube realizes reducing the noise, increased multistage short Taper Pipe again.Like this, the noise radiation in the gas in entering in the pipe to the inside and outside wall of multistage short Taper Pipe after, further absorbed by short Taper Pipe, make the noise in the gas more and more littler, thereby improved erasure effect greatly.

Description of drawings

Fig. 1 is muffler structure schematic representation of the present invention.

Embodiment

As shown in Figure 1, baffler of the present invention comprises outer tube 2 and interior pipe 1, and described outer tube 2 and interior pipe 1 are the conical tube that upper end diameter is little, lower end diameter is big, and the tapering of outer tube 2 and interior pipe 1 equates.The inboard on outer tube 2 tops is provided with central diaphragm 3, leaves spacing between central diaphragm 3 and outer tube 2 upper ends, welds together with outer tube 2 inwalls around the central diaphragm 3.Central diaphragm 3 centers processing is porose, the diameter in this hole equate with interior pipe 1 upper end diameter and interior pipe 1 upper end and central diaphragm 3 on the hole weld together all around.In pipe be provided with the short Taper Pipe 7 that upper end diameter is little, lower end diameter is big in 1, the tapering of this short Taper Pipe is greater than the tapering of interior pipe 1, is around these short Taper Pipe 7 lower ends and between around the inwall of interior pipe 1 to seal shape and weld together.Short Taper Pipe 7 wherein has eight, and these short Taper Pipes 7 are evenly arranged along the inner chamber of interior pipe 1 is vertical.Short Taper Pipe 7 upper ends of that of the top and 3 of central diaphragms, adjacent two 7 of short Taper Pipes all leave spacing.

Further improvement of the present invention is, central diaphragm 3 is provided with the horn mouth 6 that upper end diameter is big, lower end diameter is little, around the equal diameters in the hole on this horn mouth lower end diameter and the central diaphragm 3 and horn mouth 6 lower ends with central diaphragm 3 on the hole around weld together.Wherein, the upper end diameter of horn mouth 6 equates with outer tube 2 upper end diameter.

Welding for ease of central diaphragm 3, be provided with mouthpiece 4 in outer tube 2 upper ends, described mouthpiece 4 be upper end diameter is little, lower end diameter is big conical tube and its tapering greater than outer tube 2, mouthpiece 4 lower end diameter equate with outer tube 2 upper end diameter and the two welds together.For ease of under installment state, being connected with the relief opening of import/exhaust mouth, air vent of automobile engine or some factories of air compressor, be welded with flange 5 in mouthpiece 4 upper ends.

During work, the mouthpiece upper end joins by the relief opening of import/exhaust mouth, air vent of automobile engine or some factories of flange and air compressor.Enter the noise in the gas of outer tube upper end by mouthpiece, enter interior pipe after being absorbed by central diaphragm earlier.The noise of pipe is after being isolated by the spacing between interior pipe and outer tube in entering, pass through eight conical tubes successively according to top-down order again, stopped by the decay of the inwall of eight conical tubes and outer wall, discharge inwall decay and outer wall obstruction back by eight eight conical tubes, thereby noise is reduced to bottom line.

Claims

1. a baffler comprises outer tube (2) and interior pipe (1), and described outer tube (2) and interior pipe (1) are up-small and down-big conical tube, leaves spacing between outer tube (2) and interior pipe (1) and the tapering of the two equates; There is central diaphragm (3) inboard on outer tube (2) top, leave spacing between central diaphragm (3) and outer tube (2) upper end, central diaphragm (3) links to each other with outer tube (2) inwall all around, central diaphragm (3) center is porose, and the diameter in this hole and interior pipe (1) upper end diameter equate and interior pipe (1) upper end links to each other all around with hole on the central diaphragm (3); It is characterized in that up-small and down-big short Taper Pipe (7) is arranged in the interior pipe (1), the tapering of this short Taper Pipe is greater than the tapering of interior pipe (1), and its lower end circumferentially links to each other with the inwall of interior pipe (1).

2. baffler according to claim 1, it is characterized in that up big and down small horn mouth (6) is arranged on the central diaphragm (3), around the equal diameters in the hole on horn mouth (6) lower end diameter and the central diaphragm (3) and horn mouth (6) lower end with central diaphragm (3) on the hole around link together.

3. baffler according to claim 2 is characterized in that the upper end diameter of horn mouth (6) is greater than interior pipe (1) upper end diameter.

4. baffler according to claim 1 is characterized in that described short Taper Pipe (7) has two at least, and short Taper Pipe (7) is vertically uniform along the inner chamber of interior pipe (1).

5. baffler according to claim 4 is characterized in that between that short Taper Pipe (7) upper end and central diaphragm (3) of the top, all leaves spacing between adjacent two short Taper Pipes (7).

6. according to each described baffler in the claim 1～5, it is characterized in that there is mouthpiece (4) outer tube (2) upper end, described mouthpiece (4) be up-small and down-big conical tube and its tapering greater than outer tube (2), mouthpiece (4) lower end diameter equates with outer tube (2) upper end diameter and the two links together.

7. according to each described baffler in the claim 1～5, it is characterized in that there is flange (5) mouthpiece (4) upper end.