CN207715213U - A kind of engine exhaust muffler - Google Patents

Abstract

A kind of engine exhaust muffler, including cylinder, cylinder are circumferentially arranged concentrically by outer barrel and inner cylinder, filled glass fiber between outer barrel and inner cylinder；Cylinder both ends are covered with end cap, end cap includes outer end cap and the inner end cap that is fastened on the inside of outer end cap, outer barrel end coordinates between inner end cap and outer end cap side wall, inner end cap, which is equipped with, is inserted into the open-ended boss of inner cylinder, then axial limiting is on the step surface of boss side for inner cylinder end, filled glass fiber between outer end cap and inner end cap；The utility model provides a kind of engine exhaust muffler, tube structure is compact, inner barrel, left and right end cap are all made of refractory glass fibre filling, this structure can effectively reduce noise and silencer external temperature, and noise pollution and the requirement of raising vehicle safety are reduced to reach with this.

Description

A kind of engine exhaust muffler

Technical field

The utility model belongs to silencer technical field, refers in particular to a kind of engine exhaust muffler.

Background technology

Existing silencer, which is less able to take into account simultaneously, reduces noise and cooling function, while tube structure is also not tight enough It gathers.

Utility model content

The purpose of this utility model is to provide a kind of engine exhaust muffler, and tube structure is compact, inner barrel, left and right End cap is all made of refractory glass fibre filling, this structure can effectively reduce noise and silencer external temperature, is reached with this It reduces noise pollution and improves the requirement of vehicle safety.

What the purpose of this utility model was realized in：A kind of engine exhaust muffler, including cylinder, cylinder it is circumferential by Outer barrel and inner cylinder are arranged concentrically, filled glass fiber between outer barrel and inner cylinder；Cylinder both ends are covered with end cap, and end cap includes outer end The inner end cap on the inside of outer end cap is covered and is fastened on, outer barrel end coordinates between inner end cap and outer end cap side wall, and inner end cap is equipped with It is inserted into the open-ended boss of inner cylinder, then axial limiting is on the step surface of boss side for inner cylinder end, outer end cap and inner end cap Between filled glass fiber；Axial inside inner cylinder to be equipped at intervals with two partition boards, inner cylinder is axially separated into anechoic chamber by partition board successively One, anechoic chamber two and anechoic chamber three, filled glass fiber in anechoic chamber two；Be equipped on partition board air inlet webmaster, ventilating net tube and Outlet webmaster, ventilating net tube cross anechoic chamber two and are connected to anechoic chamber one and anechoic chamber three, and air inlet webmaster head is pierced by anechoic chamber Air inlet pipe is connected together, and air inlet webmaster tail portion crosses anechoic chamber two and is connected to anechoic chamber three, and outlet webmaster tail portion is fastened on The tail pipe of anechoic chamber three is stretched out in tail pipe in anechoic chamber three, tail pipe connection；Outlet webmaster head, which is crossed anechoic chamber two and connected, to disappear Tone chamber one；The inner cylinder, air inlet webmaster, ventilating net tube and outlet webmaster side wall on mesh is distributed with respectively.

Wherein, the tail pipe is fixed on by mounting plate on the outer end cap of cylinder tail portion；It is collected equipped with spark tail pipe inner end Device, spark collector stretch into tail pipe.

Wherein, the air inlet pipe is S types, and is made of air inlet pipe two curved in the air inlet pipe of arc excurvation one and arc, Small ternary catalyzing unit is equipped between air inlet pipe one and air inlet pipe two.

Wherein, it is integral type machined structures that there are exhaust pipe, the flange in two front end of the air inlet pipe by flanged joint, Wherein two side flange inner face of air inlet pipe is equipped with arc-shaped notch, is combined with sealing ring in arc-shaped notch, exhaust pipe tail portion is plugged on In sealing ring；Being compressed between flange has baffle ring, and baffle ring limits sealing ring in arc-shaped notch.

Wherein, the exhaust pipe includes exhaust pipe one, exhaust pipe two, exhaust pipe three and exhaust pipe four, exhaust pipe one and row Tracheae two is independently used to connect a cylinder, the tail portion of exhaust pipe one and exhaust pipe two by threeway connection sheet with Exhaust pipe three connects, and Dasanyuan catalyst converter is equipped between exhaust pipe three and exhaust pipe four.

The utility model is prominent and beneficial compared with prior art to be had the technical effect that：

The utility model provides a kind of engine exhaust muffler, is suitable for bi-block engine, segmentation structure, intensity More stablize.850 ° of glass fibre fillings of high temperature resistant, this structure energy are all made of inside core, outside inner barrel, left and right inner end cap Noise and silencer external temperature are effectively reduced, noise pollution and the requirement of raising vehicle safety are reduced to reach with this.Row Gas bend pipe uses ternary catalystic device structure, effective cleaning of off-gas discharge to reach state four and the requirement of Ou Si；Flange and ball bowl flange Using machining integral type, inside carbon seal ring, this structure can prevent gas leak phenomenon completely, reach the American-European mark in outlet It is accurate.

Description of the drawings

Fig. 1 is the overall structure figure of the utility model；

Fig. 2 is the utility model exhaust pipe and the cooperation figure of air inlet pipe；

Fig. 3 is the utility model flange position cooperation figure；

Fig. 4 is the utility model tube structure figure；

Fig. 5 is the utility model tail pipe structure figure.

Reference numeral：1, cylinder；2, tail pipe；3, air inlet pipe；3a, air inlet pipe one；3b, air inlet pipe two；4, exhaust pipe；4a、 Exhaust pipe one；4b, exhaust pipe two；4c, exhaust pipe three；4d, exhaust pipe four；5, flange；5a, arc-shaped notch；6, threeway connection sheet； 7, Dasanyuan catalyst converter；8, small ternary catalyzing unit；9, baffle ring；10, sealing ring；11, outer barrel；12, inner cylinder；13, ventilating net tube； 14, air inlet webmaster；15, outlet webmaster；16, tail pipe；17, outer end cap；18, inner end cap；18a, boss；19, glass fibre；20、 Mesh；21, spark collector；22, mounting plate；A, anechoic chamber one；B, anechoic chamber two；C, anechoic chamber three.

Specific implementation mode

The utility model is further described with specific embodiment below in conjunction with the accompanying drawings, referring to Fig. 1-5：

A kind of engine exhaust muffler, including cylinder 1 specifically see that Fig. 4, cylinder 1 are circumferential same by outer barrel 11 and inner cylinder 12 The heart is arranged, filled glass fiber 19 between outer barrel 11 and inner cylinder 12；1 both ends of cylinder are covered with end cap, and end cap includes outer end cap 17 With the inner end cap 18 for being fastened on 17 inside of outer end cap, 11 end of outer barrel coordinates between 17 side wall of inner end cap 18 and outer end cap, interior End cap 18, which is equipped with, is inserted into 12 open-ended boss 18a of inner cylinder, 12 end of inner cylinder then step of the axial limiting in the sides boss 18a On face, filled glass fiber 19 between outer end cap 17 and inner end cap 18；12 inside of inner cylinder is axial to be equipped at intervals with two partition boards, partition board Inner cylinder 12 is axially separated into filled glass fiber in one A of anechoic chamber, two B of anechoic chamber and anechoic chamber three C, two B of anechoic chamber successively 19；Air inlet webmaster 14, ventilating net tube 13 and outlet webmaster 15 are installed, ventilating net tube 13 crosses two B of anechoic chamber and company on partition board Three C of logical one A of anechoic chamber and anechoic chamber, 14 head of air inlet webmaster are pierced by one A of anechoic chamber and connect air inlet pipe 3,14 tail of air inlet webmaster Portion crosses two B of anechoic chamber and is connected to three C of anechoic chamber, and 15 tail portion of outlet webmaster is fastened on the tail pipe 16 in three C of anechoic chamber, tail The tail pipe 2 of three C of anechoic chamber is stretched out in 16 connection of cylinder；Cross two B of anechoic chamber and one A of joint noise reduction room in 15 head of outlet webmaster；It is described Inner cylinder 12, air inlet webmaster 14, ventilating net tube 13 and outlet webmaster 15 side wall on mesh 20 is distributed with respectively.

In conjunction with Fig. 1 and Fig. 5, the tail pipe 2 is fixed on by mounting plate 22 on the outer end cap 17 of 1 tail portion of cylinder；In tail pipe 2 End is equipped with spark collector 21, and spark collector 21 stretches into tail pipe 16.

Combined with Figure 1 and Figure 2, the air inlet pipe 3 be S types, and by one 3a of the air inlet pipe of arc excurvation and arc it is curved into Two 3b of tracheae is formed, and small ternary catalyzing unit 8 is equipped between two 3b of one 3a of air inlet pipe and air inlet pipe.

Specific to see that Fig. 3, two front ends 3b of the air inlet pipe are connected with exhaust pipe 4 by flange 5, the flange 5 is integral type Machined structures, wherein two 3b side flanges of air inlet pipe, 5 inner face are equipped with arc-shaped notch 5a, and sealing ring is combined in arc-shaped notch 5a 10,4 tail portion of exhaust pipe is plugged in sealing ring 10；Being compressed between flange 5 has baffle ring 9, and baffle ring 9 limits sealing ring 10 in arc In recess 5a.

It is specific to see that Fig. 1, the exhaust pipe 4 include one 4a of exhaust pipe, two 4b of exhaust pipe, three 4c of exhaust pipe and exhaust pipe four 4d, one 4a of exhaust pipe and two 4b of exhaust pipe are independently used to connect a cylinder, one 4a of exhaust pipe and exhaust pipe two The tail portion of 4b is connect by threeway connection sheet 6 with three 4c of exhaust pipe, and Dasanyuan is equipped between four 4d of three 4c of exhaust pipe and exhaust pipe Catalyst converter 7.

Above-described embodiment is only the preferred embodiment of the utility model, not limits the protection model of the utility model according to this It encloses, therefore：The equivalence changes that all structures, shape, principle according to the utility model are done, should all be covered by the protection of the utility model Within the scope of.

Claims (5)

1. a kind of engine exhaust muffler, including cylinder (1), it is characterised in that：Cylinder (1) is circumferential by outer barrel (11) and inner cylinder (12) it is arranged concentrically, filled glass fiber (19) between outer barrel (11) and inner cylinder (12)；Cylinder (1) both ends are covered with end cap, end Lid includes outer end cap (17) and the inner end cap (18) being fastened on the inside of outer end cap (17), and outer barrel (11) end coordinates in inner end cap (18) between outer end cap (17) side wall, inner end cap (18), which is equipped with, is inserted into inner cylinder (12) open-ended boss (18a), inner cylinder (12) then axial limiting fills glass on the step surface of the side boss (18a) between outer end cap (17) and inner end cap (18) for end Glass fiber (19)；Inner cylinder (12) is internal to be axially equipped at intervals with two partition boards, and inner cylinder (12) is axially separated into noise reduction by partition board successively Room one (A), anechoic chamber two (B) and anechoic chamber three (C), anechoic chamber two (B) interior filled glass fiber (19)；Be equipped on partition board into Gas webmaster (14), ventilating net tube (13) and outlet webmaster (15), ventilating net tube (13) cross anechoic chamber two (B) and are connected to anechoic chamber One (A) and anechoic chamber three (C), air inlet webmaster (14) head are pierced by anechoic chamber one (A) and connect air inlet pipe (3), air inlet webmaster (14) tail portion crosses anechoic chamber two (B) and is connected to anechoic chamber three (C), and outlet webmaster (15) tail portion is fastened on anechoic chamber three (C) tail pipe (2) of anechoic chamber three (C) is stretched out in the tail pipe (16) in, tail pipe (16) connection；Cross noise reduction in outlet webmaster (15) head Room two (B) and joint noise reduction room one (A)；The inner cylinder (12), air inlet webmaster (14), ventilating net tube (13) and outlet webmaster (15) Side wall on mesh (20) is distributed with respectively.

2. a kind of engine exhaust muffler according to claim 1, it is characterised in that：The tail pipe (2) passes through installation Plate (22) is fixed on the outer end cap (17) of cylinder (1) tail portion；Tail pipe (2) inner end is equipped with spark collector (21), and spark is collected Device (21) stretches into tail pipe (16).

3. a kind of engine exhaust muffler according to claim 1, it is characterised in that：The air inlet pipe (3) is S types, And it is made of air inlet pipe two (3b) curved in the air inlet pipe of arc excurvation one (3a) and arc, air inlet pipe one (3a) and air inlet pipe two Small ternary catalyzing unit (8) is equipped between (3b).

4. a kind of engine exhaust muffler according to claim 3, it is characterised in that：The front end the air inlet pipe two (3b) It is connected with exhaust pipe (4) by flange (5), the flange (5) is integral type machined structures, the wherein side air inlet pipe two (3b) method Blue (5) inner face is equipped with arc-shaped notch (5a), and sealing ring (10), exhaust pipe (4) tail portion grafting are combined in arc-shaped notch (5a) In sealing ring (10)；Being compressed between flange (5) has baffle ring (9), and baffle ring (9) limits sealing ring (10) at arc-shaped notch (5a) In.

5. a kind of engine exhaust muffler according to claim 4, it is characterised in that：The exhaust pipe (4) includes row Tracheae one (4a), exhaust pipe two (4b), exhaust pipe three (4c) and exhaust pipe four (4d), exhaust pipe one (4a) and exhaust pipe two (4b) It is independently used to connect a cylinder, the tail portion of exhaust pipe one (4a) and exhaust pipe two (4b) passes through threeway connection sheet (6) it is connect with exhaust pipe three (4c), Dasanyuan catalyst converter (7) is equipped between exhaust pipe three (4c) and exhaust pipe four (4d).