CN2918745Y

CN2918745Y - Tubulature miniporous plate type silencer

Info

Publication number: CN2918745Y
Application number: CN 200620085773
Authority: CN
Inventors: 梁晓宏
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-06-13
Filing date: 2006-06-13
Publication date: 2007-07-04
Anticipated expiration: 2016-06-13

Abstract

The utility model relates to a staged slot arranged tube micropore plate type muffler, comprising a casing, a front close cover, a back close cover, a central silencing tube provided with a staged slot and micropores, an air feeder and an escape pipe. A front partition 4, on which micropores 9 are evenly distributed and a back partition 6, on which micropores 9 are evenly distributed are arranged in the casing 3, which is closed by the front close cover 2 and the back close cover 8, the close casing 3 is divided into three silencing chambers I, II and III; one or two marginal silencing tubes 5 are arranged near the central silencing tube 5, which gets through the three silencing chambers I, II and III and is communicated with the air feeder 1 and the escape pipe 7; the head of the silencing tube 5 suspending at the margin of the silencing chamber II is communicated with the silencing chamber I directly and the tail is communicated with the silencing chamber III directly; and the back dividing board 6, on which micropores 9 are evenly distributed, is not provided with a through hole in the center. The utility model has the advantages of simple structure, easy installation, good noise reducing and silencing performance and capability of reducing the oil consumption of the internal-combustion engine and can be applied on the internal-combustion engine.

Description

Ladder stitch tubulation micro-pore plate type silencing apparatus

One. technical field

The utility model relates to a kind of mechanical device of eliminating the I. C. engine exhaust noise, especially a kind of ladder stitch tubulation micro-pore plate type silencing apparatus.

Two. background technique

The device of eliminating the I. C. engine exhaust noise is more, with the utility model comparatively approaching be the disclosed ZL97219828.8 of Patent Office of the People's Republic of China " trapezoidal narrow slit micro-pore plate type internal combustion engine exhaust silencer ", it is by housing, preceding capping, rear seal-cover, a plurality of dividing plates that are evenly equipped with micropore, central hush tube two ends that are evenly equipped with the ladder stitch micropore connect suction tude and steam outlet pipe composition, it is separated into anechoic room more than four with the housing of sealing, can reduce the I. C. engine exhaust noise by different frequencies, but exist structure complicated, manufacture cost is higher, inconvenience is installed, problems such as noise reduction noise elimination effect is undesirable.

Three. summary of the invention

Task of the present utility model provides a kind of mechanical device of improved elimination I. C. engine exhaust noise, and it can simplified structure, reduce cost, be convenient to install, and can improve noise reduction noise elimination effect again.

For finishing this task, the utility model carries out in the following way: it comprises housing, preceding capping, rear seal-cover, ladder stitch micropore central authorities hush tube, suction tude, steam outlet pipe composition, in housing, be provided with the preceding dividing plate of a uniform micropore and the rear bulkhead of a uniform micropore, the housing that seals is separated into three anechoic rooms by preceding capping and rear seal-cover sealing; Be provided with 1～2 edge hush tube at the periphery that runs through three anechoic rooms and connect the central hush tube of suction tude, steam outlet pipe, suspension is straight-through first anechoic room in hush tube termination, the second anechoic room edge, straight-through the 3rd anechoic room of end tail.

The utility model has shortened housing because the suppressor case that closes is separated into three anechoic rooms, has reduced dividing plate quantity, so can simplified structure, reduce cost, be convenient to install; Owing to the periphery at central hush tube is provided with 1～2 edge hush tube, turbulent flow and different frequencies in three anechoic rooms, have fully been made, simultaneously so can improve noise reduction noise elimination effect; Owing to do not open the hole in the rear bulkhead central authorities of uniform micropore, the airspeed of passing through is slowed down in addition, and it is more abundant to burn, so also can reduce the internal-combustion engine oil consumption.

Four. description of drawings

The concrete structure of model utility is provided by the following drawings.

Fig. 1 is according to a kind of ladder stitch tubulation micro-pore plate type silencing apparatus perspective view that the utility model proposes.

Fig. 2 is the preceding dividing plate plan view of ladder stitch tubulation micro-pore plate type silencing apparatus shown in Figure 1.

Fig. 3 is the preceding dividing plate plan view of the another kind of shape of ladder stitch tubulation micro-pore plate type silencing apparatus shown in Figure 1.

Fig. 4 is the rear bulkhead plan view of ladder stitch tubulation micro-pore plate type silencing apparatus shown in Figure 1.

Fig. 5 is the another kind of shape rear bulkhead plan view of ladder stitch tubulation micro-pore plate type silencing apparatus shown in Figure 1.

Each sign expression in the accompanying drawing:

1. dividing plate 5. hush tubes 6. rear bulkheads 7. steam outlet pipes 8. rear seal-cover I. anechoic room II. anechoic room III. anechoic rooms before capping 3. housings 4. before the suction tude 2.

Below in conjunction with accompanying drawing the utility model is done to describe in further detail.

Five. embodiment

With reference to Fig. 1, concrete structure of the present utility model comprises housing, preceding capping, rear seal-cover, ladder stitch micropore central authorities hush tube, suction tude, steam outlet pipe composition, in housing 3, be provided with the preceding dividing plate 4 of a uniform micropore 9 and the rear bulkhead 6 of a uniform micropore 9, the housing 3 that seals is separated into three anechoic room I, II, III by preceding capping 2 and rear seal-cover 8 sealings; Be provided with 1～2 edge hush tube 5 at the periphery that runs through three anechoic room I, II, III and connect the central hush tube 5 of suction tude 1, steam outlet pipe 7, suspension is straight-through anechoic room I in hush tube 5 terminations, anechoic room II edge, the straight-through anechoic room III of end tail.

As shown in Figure 2, preceding dividing plate 4 central authorities of uniform micropore 9 have 1 through hole, and periphery has 1～2 through hole, and preceding dividing plate 4 is circular.

As shown in Figure 4, rear bulkhead 6 central peripheral of uniform micropore 9 have 1～2 through hole, and rear bulkhead 6 is circular.

As Fig. 3, shown in Figure 5, the preceding dividing plate 4 of uniform micropore 9, rear bulkhead 6 are also oval-shaped.

Preceding capping 2, rear seal-cover 8, housing 3 also are respective circular or oval-shaped.

During work, the I. C. engine exhaust noise along the direction of arrow from suction tude 1 enter central authorities hush tube 5, flow velocity reduces when meeting the dividing plate of the uniform micropore 9 in rear bulkhead 6 centers, most of exhaust noise is clamp-oned anechoic room I from central sound pipe 5 uniform ladder stitch micropores, II, wherein a part from anechoic room I through the micropore of preceding dividing plate 4 and frame after the ladder stitch micropore of the edge of anechoic room II hush tube 5 is clamp-oned anechoic room II, again from the uniform ladder stitch micropore of edge hush tube 5, rear bulkhead 6 uniform micropores are clamp-oned anechoic room III, and last and fraction directly enters central hush tube 5 exhaust noise turbulent mixture and discharges behind steam outlet pipe 7 noise reductions.

Claims

1. ladder stitch tubulation micro-pore plate type silencing apparatus, it comprises housing, preceding capping, rear seal-cover, ladder stitch micropore central authorities hush tube, suction tude, steam outlet pipe composition, it is characterized in that in housing (3), being provided with the preceding dividing plate (4) of a uniform micropore (9) and the rear bulkhead (6) of a uniform micropore (9), the housing (3) that seals is separated into three anechoic rooms (I, II, III) by preceding capping (2) and rear seal-cover (8) sealing; Be provided with 1～2 edge hush tube (5) at the periphery that runs through three anechoic rooms (I, II, III) and connect the central hush tube (5) of suction tude (1), steam outlet pipe (7), suspension is in the straight-through anechoic room (I) in edge hush tube (5) termination of anechoic room (II), and the end tail leads directly to anechoic room (III).

2. ladder stitch tubulation micro-pore plate type silencing apparatus according to claim 1 is characterized in that preceding dividing plate (4) central authorities of described uniform micropore (9) have 1 through hole, and periphery has 1～2 through hole.

3. ladder stitch tubulation micro-pore plate type silencing apparatus according to claim 1 is characterized in that rear bulkhead (6) central peripheral of described uniform micropore (9) has 1～2 through hole.

4. according to claim 1 or 2 or 3 described ladder stitch tubulation micro-pore plate type silencing apparatuss, the preceding dividing plate (4) and the rear bulkhead (6) that it is characterized in that described uniform micropore (9) are circle or oval-shaped, and preceding capping (2), rear seal-cover (8), housing (3) also are the circular or oval-shaped of correspondence.