CN208650941U - A kind of automotive silencing cylinder - Google Patents

Abstract

The utility model relates to a kind of automotive silencing cylinders, including inner barrel and outer barrel；In a part insertion outer cylinder of the inner cylinder, the inner cylinder left end is inlet end, right end closing；Fixed ring is arranged in the endface position of wall and outer cylinder outer tube；Setting heat absorption filled layer in the inner cylinder；Inclined gas vent is set on the inner tank theca of outer barrel, plug is set in the closed end of inner cylinder；Two apertured partitions are set in the outer cylinder；High temperature resistant heat insulation layer is arranged in the outer drum outer wall, and the thickness of the high temperature resistant heat insulation layer from left to right is gradually thinning, and maximum gauge is greater than 2cm；The mounting ear of diamond shape is set below the outer drum outer wall, fixation hole is set on the mounting ear.The utility model is ingenious in design, stable structure, can effectively reduce the noise that tail gas generates in discharge process using the form of multiple chambers, noise elimination effect is good；With good heat insulation, outer cylinder will not be hot.

Description

A kind of automotive silencing cylinder

Technical field

The utility model belongs to automobile technical field, and in particular to a kind of automotive silencing cylinder.

Background technique

Silencer is a kind of device for preventing sound transmission and air-flow being allowed to pass through, and is the weight for eliminating air power noise Want measure.Automotive silencing cylinder in the prior art, there is a problem of that noise elimination effect is poor and outer cylinder be easy it is hot.

Utility model content

In order to solve above-mentioned prior art problem, the utility model provides a kind of automotive silencing cylinder, can improve more than Deficiency.

The utility model relates to a kind of automotive silencing cylinders, including inner barrel and outer barrel；Described in a part insertion of the inner cylinder In outer cylinder；The inner cylinder left end is inlet end, right end closing；In inner cylinder, removable filter web plate is set；The filter screen Plate is covered with hole；Annular setting is presented in described hole；Fixed ring is arranged in the endface position of wall and outer cylinder outer tube；It is wherein described Fixed ring is fixed by the end face of bolt and outer cylinder；It is fixed between fixed ring and inner tank theca by adhesive；In the inner cylinder Interior setting heat absorption filled layer；Inclined gas vent is set on the inner tank theca of outer barrel, is set in the closed end of inner cylinder Set plug；Two apertured partitions are set in the outer cylinder, outer cylinder is divided into three chambers, respectively first chamber, second chamber With third chamber；Wherein there are inner concaves between the left end face and outer tube inner wall of first chamber；In the second chamber inner wall Adsorption layer is set, connecting rod is set in the top bottom surface of its inner wall；Setting bending elastic baffle in the connecting rod；The bending bullet Property baffle present " W " or " M " shape；Multiple partitions with gas-guide tube are set in the third chamber；The partition is by third Chamber is divided into multiple expansion chambers, and wherein gas-guide tube level height is non-coplanar in adjacent separator；Bottom plate is arranged in the outer cylinder right end, Venthole is provided on bottom plate；The outer drum outer wall is arranged high temperature resistant heat insulation layer, and the high temperature resistant heat insulation layer is from left to right Thickness is gradually thinning, and maximum gauge is greater than 2cm；The mounting ear of setting diamond shape below the outer drum outer wall, on the mounting ear Fixation hole is set.

Further, the high temperature resistant heat insulation layer includes acid imide insulating layer and fluoroalkyl compound insulating layer excessively.

Further, the length of the bending elastic baffle is greater than 10cm.

Further, the number of the partition is three.

Further, the position of the partition is at the one third of third chamber length.

Further, the spacing of the partition is greater than 6cm.

Further, the plug is in coniform.

Further, fixed link is set between the inner cylinder right end and the right side inner wall of first chamber.

The utility model is ingenious in design, structure novel, monolithic stability, can effectively reduce tail using the form of multiple chambers The noise that gas generates in discharge process, noise elimination effect are good；With good heat insulation, outer cylinder will not be hot.

Detailed description of the invention

FIG. 1 is a schematic structural view of the utility model.

Fig. 2 is high temperature resistant heat insulation schematic diagram of a layer structure.

Diagram: 1 inner cylinder, 2 outer cylinders, 3 apertured partitions, 4 adsorption layers, 5 bending elastic baffles, 6 partitions, 7 gas-guide tubes, 8 installations Ear, 9 fixation holes, 10 plugs, 11 gas vents, 12 heat absorption filled layers, 13 bottom plates, 14 fixed rings, 15 expansion chambers, 16 inner concaves, 17 connecting rods, 18 fixed links, 19 high temperature resistant heat insulation layers, 191 include acid imide insulating layer, 192 fluoroalkyl compound insulating layer, 20 excessively and go out Stomata, 21 screen packs.

Specific embodiment

In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, with reference to the accompanying drawing and implement Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is used only for explaining The utility model is not used to limit the utility model.

As depicted in figs. 1 and 2, a kind of automotive silencing cylinder, including inner cylinder 1 and outer cylinder 2；A part insertion of the inner cylinder 1 In outer cylinder 2,1 left end of inner cylinder is inlet end, right end closing；In inner cylinder, removable filter web plate 21 is set；The mistake Sieve plate is covered with hole；Annular setting is presented in described hole；In the endface position of 1 outer wall of inner cylinder and outer cylinder 2, fixed ring 14 is set； Wherein the fixed ring is fixed by the end face of bolt and outer cylinder；It is fixed between fixed ring and inner tank theca by adhesive；? Setting heat absorption filled layer 12 in the inner cylinder 1；Inclined gas vent 11 is set on 1 outer wall of inner cylinder inside outer cylinder 2, in inner cylinder Setting is in coniform plug 10 in 1 closed end；Two apertured partitions 3 are set in the outer cylinder 2, it is three that outer cylinder 2, which is divided, Chamber, respectively first chamber, second chamber and third chamber are wherein deposited between the left end face and outer tube inner wall of first chamber In inner concave 16；Adsorption layer 4 is set in second chamber inner wall, connecting rod 17 is set in the top bottom surface of its inner wall；The connecting rod Setting bending elastic baffle 5 on 17；" W " or " M " shape is presented in the bending elastic baffle 5；The length is 12cm, are highly 5cm, It is welding between connecting rod and bending elastic plate, three partitions 6 for having gas-guide tube 7 is set in third chamber, between partition Distance be 8cm；Third chamber is divided into four expansion chambers 15 by the partition 6；Wherein gas-guide tube 7 is horizontal high in adjacent separator 6 It spends non-coplanar；Bottom plate 13 is arranged in 2 right end of outer cylinder, is provided with venthole 20 on bottom plate 13；2 outer wall of the outer cylinder setting High temperature resistant heat insulation layer 19, the thickness of the high temperature resistant heat insulation layer from left to right is gradually thinning, and maximum gauge is greater than 2cm；It is described The mounting ear 8 of diamond shape is set below 2 outer wall of outer cylinder, fixation hole 9 is set on the mounting ear 8.

The high temperature resistant heat insulation layer 19 includes acid imide insulating layer 11 and crosses fluoroalkyl compound insulating layer 192, they are Good heat-barrier material.

Adsorption layer 14 above-mentioned selects black cobalt coating, and the main component of black cobalt coating is CoS, has the netted knot of honeycomb type Structure, for absorptance α up to 0.94~0.96, transmitting ratio ε is that 0.12~0.14, α/ε is 6.7~8.Endothermic effect is good.

Above-mentioned, the position of partition 6 is at the one third of third chamber length.

In order to further reinforce the stability of inner cylinder, it is arranged between the inner cylinder right end and the right side inner wall of first chamber Fixed link 18.

When high-temp waste gas enters the input end of inner cylinder, it can be adsorbed and main file one by screen pack 21 first Divide dust particale, the high temperature gas flow then passed through can impact plug first, then rebound on the surface of plug, plug can Play the role of slowing down to air-flow, then air-flow is moved along inner cylinder inner wall, and the first chamber of outer barrel is then entered from gas vent Room, since setting heat absorption filled layer can absorb a part of high temperature in inner cylinder；Air-flow into inner cylinder is moved along inner cylinder inner wall Dynamic, the inner concave of left end can accelerate air-flow and move along inner wall on inner cylinder, good steering-effecting be played, then by most left The apertured partition of side enters second chamber, plays noise elimination effect under the limitation of bending elastic baffle, and air-flow can slow down, while with The problem of adsorption layer of inner wall is had an effect, and can further decrease exhaust gas herein；Then again by it is intermediate it is with holes every Plate enters third chamber and forms third time noise elimination effect by expansion chambers, finally excludes from the venthole of bottom plate.

Claims (8)

1. a kind of automotive silencing cylinder, it is characterised in that: including inner barrel and outer barrel；A part of the inner cylinder is inserted into the outer cylinder It is interior；The inner cylinder left end is inlet end, right end closing；In inner cylinder, removable filter web plate is set；The screen pack cloth Full hole；Annular setting is presented in described hole；Fixed ring is arranged in the endface position of wall and outer cylinder outer tube；The wherein fixation Ring is fixed by the end face of bolt and outer cylinder；It is fixed between fixed ring and inner tank theca by adhesive；It is set in the inner cylinder Set heat absorption filled layer；Inclined gas vent is set on the inner tank theca of outer barrel, is arranged in the closed end of inner cylinder stifled Head；Two apertured partitions are set in the outer cylinder, outer cylinder is divided into three chambers, respectively first chamber, second chamber and the Three chambers；Wherein there are inner concaves between the left end face and outer tube inner wall of first chamber；It is arranged in the second chamber inner wall Connecting rod is arranged in the top bottom surface of its inner wall in adsorption layer；Setting bending elastic baffle in the connecting rod；The bending elasticity gear " W " or " M " shape is presented in plate；Multiple partitions with gas-guide tube are set in the third chamber；The partition is by third chamber It is divided into multiple expansion chambers, wherein gas-guide tube level height is non-coplanar in adjacent separator；Bottom plate, bottom cover is arranged in the outer cylinder right end Venthole is provided on plate；High temperature resistant heat insulation layer, the thickness of the high temperature resistant heat insulation layer from left to right is arranged in the outer drum outer wall Gradually thinning, maximum gauge is greater than 2cm；The mounting ear of diamond shape is set below the outer drum outer wall, is arranged on the mounting ear Fixation hole.

2. a kind of automotive silencing cylinder according to claim 1, it is characterised in that: the high temperature resistant heat insulation layer includes acid imide Insulating layer and excessively fluoroalkyl compound insulating layer.

3. a kind of automotive silencing cylinder according to claim 1, it is characterised in that: the length of the bending elastic baffle is greater than 10cm。

4. a kind of automotive silencing cylinder according to claim 1, it is characterised in that: the number of the partition is three.

5. a kind of automotive silencing cylinder according to claim 1, it is characterised in that: the position of the partition is that third chamber is long At the one third of degree.

6. a kind of automotive silencing cylinder according to claim 1, it is characterised in that: the spacing of the partition is greater than 6cm.

7. a kind of automotive silencing cylinder according to claim 1, it is characterised in that: the plug is in coniform.

8. a kind of automotive silencing cylinder according to claim 1, it is characterised in that: the right side of the inner cylinder right end and first chamber Fixed link is set between the inner wall of side.