CN2823566Y

CN2823566Y - Silencer

Info

Publication number: CN2823566Y
Application number: CN 200520092424
Authority: CN
Inventors: 赵西尧
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-09-09
Filing date: 2005-09-09
Publication date: 2006-10-04
Anticipated expiration: 2015-09-09

Abstract

The utility model relates to a silencer belonging to mechanism manufacturing industry, particularly to a device for venting exhaust gas and eliminating noise for motor vehicles. The utility model designs a new device aiming at the defects that traditional silencers have poor noise reducing effect and high surface temperature and can generate scald accidents easily. The utility model is composed of an outer cover, an isolating layer and an ingress pipe for exhaust gas. The utility model is characterized in that an expansion chamber is composed of a front expansion chamber and a tail expansion chamber; the inner wall of the front expansion chamber is provided with a backswept semicircular sound blocking board; the outer cover is provided with an arrow-shaped air inlet and a heat radiating hole. The utility model has the characteristics that noise eliminating effect is good; scald accidents are reduced or avoided.

Description

A kind of silencing apparatus

Technical field

The utility model belongs to machine industry, is a kind of cooling of emptying waste gas of motor vehicle, the device of elimination noise specifically.

Background technique

At present, the silencing apparatus that motor vehicle adopt, no matter aspect noise elimination or aspect cooling, its effect is all not ideal enough, except that causing environmental pollution, easier generation scald accident.

The model utility content

The purpose of this utility model is the drawback that exists at existing conventional muffler, researched and developed a kind of novel silencer, adopt double expansion chamber, multilayer noise reduction, the separation layer and set up the intake grill facility of absorbing heat, increase substantially erasure effect, prevent the generation of scald accident.

A kind of silencing apparatus is to be made of each parts of outer cover, waste gas ingress pipe, expansion chamber, radiation hole and outlet port, it is characterized in that:

A) expansion chamber is made up of preceding expansion chamber and afterbody expansion chamber two-part, and preceding expansion chamber inwall is provided with sound-absorption hole, and is equipped with semicircle sweptback retaining soundboard on inwall, and mutual dislocation is installed relatively between the retaining soundboard, and the afterbody of preceding expansion chamber is provided with screw thread; The afterbody expansion chamber is made up of exhaust emission tube and heat insulation, each parts of anechoic room, and the afterbody expansion chamber is by outlet pipe and preceding expansion chamber UNICOM, and the outside spring of installing of outlet pipe makes the afterbody expansion chamber become overall structure by the screw threads for fastening expansion chamber;

B) separation layer is cylindrical, the external layer of expansion chamber before being arranged on, be provided with the sound-absorbing wire gaze between the inwall of separation layer and the external layer of preceding expansion chamber, the outer surface layer of separation layer and front end are between the inwall of cylindrical shape noise elimination protecting jacket of taper and are filled with asbestos layer;

C) noise elimination protecting jacket outer surface front and back ends is provided with support, is fixed with the anti-scald outer cover of cylindrical shape that the front portion is taper by support, and outer cover is provided with arrow shaped intake grill and radiation hole, also is provided with heat radiation circular hole and heat radiation oblong aperture around the outer cover.

Preceding expansion chamber is provided with pollutant exhaust hole near the position at rear portion; The front end of noise elimination protecting jacket is provided with outage; Be filled with asbestos in the anechoic room.

Good effect of the present utility model is: take to set up the way of afterbody expansion chamber, make waste gas carry out reexpansion, make the waste gas cool effect better; Arrow-shaped intake grill forced ventilation is set on outer cover, and separation layer is set up metal stratum reticulare and asbestos layer, makes cooling, effect of heat insulation better, makes noise be tending towards minimum degree, and has reduced the generation of scald accident significantly.

Description of drawings

Fig. 1, integral installation distribution structure sectional view of the present utility model, wherein: (1) outlet port; (2) screw thread, (3) support, (4) arrow-shaped radiation hole; (5) pollutant exhaust hole, (6) sound-absorption hole, (7) outage; (8) outer cover, (9) waste gas ingress pipe, (10) preceding expansion chamber; (11) retaining soundboard; (12) wire netting, (13) asbestos layer, (14) separation layer; (15) heat radiation circular hole; (16) noise elimination protecting jacket, (17) outlet pipe, (18) spring; (19) afterbody expansion chamber; (20) screw thread, (21) exhaust emission tube, (22) anechoic room.

Fig. 2, the utility model form structure schematic representation, wherein: (23) intake grill, (24) heat radiation oblong aperture.

The eliminate the noise form structure schematic representation of protecting jacket (16) of Fig. 3, the utility model Fig. 1.

Fig. 4, the utility model Fig. 1 afterbody expansion chamber (19) form structure schematic representation.

Embodiment

To structure of the present utility model and operation mechanism, further describe as follows in conjunction with the accompanying drawings:

The utility model is to be made of outer cover 8, waste gas ingress pipe 9, expansion chamber, radiation hole and exhaust vent each several part, expansion chamber is divided into two-part, preceding expansion chamber and afterbody expansion chamber, preceding expansion chamber inwall is provided with sound-absorption hole 6, also be equipped with on the inwall four semicircles recede 30 the degree retaining soundboards 11, the retaining soundboard 11 between mutual dislocation install relatively; Waste gas is in through the outside discharge process of expansion chamber, and the curved state flow of air-flow is through expansion chamber, and row is to atmosphere; The afterbody of preceding expansion chamber 10 is provided with screw thread 20; Afterbody expansion chamber 19 is made up of exhaust emission tube 21 and heat insulation, anechoic room 22 each parts, afterbody expansion chamber 19 is by outlet pipe 17 and preceding expansion chamber 10 UNICOMs, and the spring 18 of outlet pipe 17 peripheral hardwares makes the afterbody expansion chamber constitute integral body securely by screw thread 20 and preceding expansion chamber; The setting of spring 18, the two is fixing more fastening to make preceding expansion chamber and afterbody expansion chamber, longer service life; Separation layer 14 is cylindric, the external layer of expansion chamber 10 before being arranged on, be provided with steel wire 12 between the external layer of the inwall of separation layer 14 and preceding expansion chamber 10, the outer surface layer of separation layer 14 and front end are between the inwall of cylindrical shape noise elimination protecting jacket 16 of taper and are filled with asbestos layer 13; Asbestos fiber is better than asbestos cloth heat-insulating cooling effect, and steel screen layer absorbs heat, eliminates the noise, and the good results are evident; The forward and backward position of noise elimination protecting jacket 16 outer surfaces is provided with support 3, is fixed with outer cover 8 by support 3, and the front portion is on the columnar anti-scald outer cover 8 of taper, is provided with sagittate intake grill 23 and radiation hole 4; This forced ventilation facility significantly improves radiating efficiency; Also be provided with circular and rectangular radiation hole 24 around the outer cover surface; The rear portion of preceding expansion chamber is provided with pollutant exhaust hole 5, and the front portion of noise elimination protecting jacket is provided with outage 7.Enter into the dirt of metal stratum reticulare by pollutant exhaust hole, after can regularly the afterbody expansion chamber being disassembled, carry out cleaning and descaling.

The utility model is tested on motor vehicle, and is respond well, quite popular with users.

Claims

1. a silencing apparatus is to be made of each parts of outer cover (8), waste gas ingress pipe (9), expansion chamber, radiation hole and outlet port (1), it is characterized in that:

A) expansion chamber is made up of preceding expansion chamber (10) and afterbody expansion chamber (19) two-part, preceding expansion chamber (10) inwall is provided with sound-absorption hole (6), and on inwall, be equipped with semicircle sweptback retaining soundboard (11), mutual dislocation is installed relatively between the retaining soundboard (11), and the afterbody of preceding expansion chamber (10) is provided with screw thread (2), (20); Afterbody expansion chamber (19) is made up of exhaust emission tube (21) and heat insulation, each parts of anechoic room (22), afterbody expansion chamber (19) is by outlet pipe (17) and preceding expansion chamber UNICOM, the outside spring of installing (18) of outlet pipe (17) makes expansion chamber be tightened to overall structure by screw thread afterbody expansion chamber (19);

B) separation layer (14) is cylindrical, be arranged on the external layer of preceding expansion chamber (10), be provided with sound-absorbing wire gaze (12) between the external layer of the inwall of separation layer (14) and preceding expansion chamber (10), be filled with asbestos layer (13) between the inwall of the cylindrical shape noise elimination protecting jacket (16) that the outer surface layer of separation layer (14) and front end are taper;

C) noise elimination protecting jacket (16) outer surface front and back ends is provided with support (3); be fixed with the anti-scald outer cover of cylindrical shape (8) that the front portion is taper by support (3); outer cover (8) is provided with arrow shaped intake grill (23) and radiation hole (4), also is provided with heat radiation circular hole (15) and heat radiation oblong aperture (24) around the outer cover (8).

2. a kind of silencing apparatus according to claim 1 is characterized in that: preceding expansion chamber (10) is provided with pollutant exhaust hole (5) near the position at rear portion.

3. a kind of silencing apparatus according to claim 1 is characterized in that: the front end of noise elimination protecting jacket (16) is provided with outage (7).

4. a kind of silencing apparatus according to claim 1 is characterized in that: anechoic room is filled with asbestos material in (22).