CN206503626U - A kind of silencer flame arrest structure - Google Patents
A kind of silencer flame arrest structure Download PDFInfo
- Publication number
- CN206503626U CN206503626U CN201720107090.3U CN201720107090U CN206503626U CN 206503626 U CN206503626 U CN 206503626U CN 201720107090 U CN201720107090 U CN 201720107090U CN 206503626 U CN206503626 U CN 206503626U
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- CN
- China
- Prior art keywords
- silencer
- flame
- muffler body
- screen pack
- blast pipe
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- Exhaust Gas After Treatment (AREA)
- Exhaust Silencers (AREA)
Abstract
The utility model discloses a kind of silencer flame arrest structure, including being built-in with the muffler body of catalyst and the blast pipe of discharge waste gas, combined in the exhaust outlet of the muffler body with the junction of blast pipe provided with flameproof enclosure, the flameproof enclosure combination is provided with the fire prevention screen pack and locking cap connected firmly, the tapered design of screen pack of preventing fires.Disperse after the flame produced after catalyst burns again is first assembled when flameproof enclosure is combined by taper fire prevention screen pack through mesh, so as to reach flame arrest purpose, the flame problem that conventional hedgeclipper containing catalyst is present is efficiently solved, such as U.S. USDA Safety Approvals requirement is met.
Description
Technical field
The utility model is related to general small-size gasoline engine technical field, more particularly to a kind of silencer flame arrest structure.
Background technology
At present due to the requirement that home and abroad is discharged, catalyst is set in uniform-charge Otto-engine silencer, to solve silencer flame
The problem of, muffler is interior to be provided with Anti-flame structure, such as：ZL201620362316.X, a kind of muffler Anti-flame structure will be conventional
Two cavity configurations of muffler are changed to three-cavity structure, i.e., one chamber is divided into two chambers with dividing plate, and extend by increasing spoiler
Distance is vented, muffler flame phenomenon is solved.But for portable hedge trimmer, supporting gasoline engine is lightweight, volume
Small, the volume of corresponding silencer is also small, therefore, and the flame arrest structure such as long path can not be set in silencer, works as hedge trimming
During machine throttle wide be full Light Condition, by unloaded anticlimax to idling operation when, the gaseous mixture for entering cylinder interior can not be complete
Full burning, unnecessary unburned gaseous mixture is discharged into inside silencer, when unburned gaseous mixture is by catalyst in silencer
When be heated under catalysis and light generation flame, flame sprays through silencer exhaust outlet, causes hedgeclipper to there is peace
Full hidden danger, it is impossible to meet the Safety Approval requirement of U.S. USDA and developed countries, therefore, is badly in need of a kind of muffler volume
Small, can go out flame, meet the silencer flame arrest structure of external Safety Approval requirement.
The content of the invention
The utility model purpose is to provide a kind of gasoline engine flame arrest structure, using installing one between silencer and blast pipe
Part flameproof enclosure is combined, and when the flame produced in silencer prevents fires screen pack by taper, mesh disperses after first collecting, so that
The purpose of effective flame arrest is reached, the flame problem that conventional hedgeclipper containing catalyst is present is efficiently solved.
The utility model is adopted the technical scheme that：A kind of silencer flame arrest structure, including it is built-in with the noise elimination of catalyst
The blast pipe of body and discharge waste gas, it is described to be characterized in that：Flameproof enclosure group is provided between the muffler body and blast pipe
Close, the flameproof enclosure combination is provided with the fire prevention screen pack of taper and connects firmly blast pipe and the locking cap of muffler body.
Preferably, the fire prevention screen pack is placed in blast pipe, and large awl end is connected with muffler body exhaust outlet.
Further, the small tapered end of the fire prevention screen pack, which is mediated, is integrated.
Preferably, the muffler body, which is divided into by dividing plate in two chambers communicated, chamber one, is provided with catalyst, provided with gear in chamber two
Plate.
Further, one end is additionally provided with the chamber two by the exhaust inner tube outside waste gas discharge muffler body.
Preferably, the mesh of the fire prevention screen pack is preferably the mesh of 30 mesh~36.
The beneficial effects of the utility model are flame when thoroughly solving the anticlimax rotating speed of the presence of hedgeclipper containing catalyst
Problem, allows hedgeclipper containing catalyst to meet every Safety Approval requirement such as U.S. USDA.
Brief description of the drawings
Accompanying drawing described herein is used for providing further understanding to of the present utility model, constitutes one of the present utility model
Point, this schematic description and description is used to explain the utility model, does not constitute to improper restriction of the present utility model.
Accompanying drawing 1 is the technical program acoustic wave filter structure schematic diagram；
Accompanying drawing 2 is the technical program flame arrest structural representation；
Accompanying drawing 3 is A direction views.
Number explanation in accompanying drawing 1：1st, blast pipe；2nd, small tapered end；3rd, flameproof enclosure is combined；4th, muffler body exhaust outlet；5th, it is big
Tapered end；6th, it is vented inner tube；7th, muffler body；8th, through hole；9th, catalyst；10th, baffle plate；11st, dividing plate；12nd, locking cap；13rd, prevent fires
Screen pack；14th, chamber one；15th, chamber two.
Embodiment
As shown in Figure 1, Figure 2, Figure 3 shows, the utility model silencer flame arrest structure includes muffler body 7（Catalyst 9, through hole
8th, silencer exhaust outlet 4, exhaust inner tube 6, baffle plate 10, dividing plate 11, chamber 1, chamber 2 15）, blast pipe 1 and flameproof enclosure combination 3
（Locking cap 12, fire prevention screen pack 13, small tapered end 2, large awl end 5）.
Dividing plate 11 provided with through hole 8 will be divided into two chambers in muffler body 7, catalyst 9 is arranged on dividing plate 11 and is located at
In chamber 1, exhaust inner tube 6 is with the Guan County of baffle plate 10 in chamber 2 15, and the silencer exhaust outlet 4 of exhaust inner tube 6 stretches out muffler body
Outside 7.
Fire prevention screen pack 13 is connected firmly with locking cap 12 combines 3 for flameproof enclosure, and the small tapered end 2 of the fire prevention screen pack 13 of taper is pinched
It is integrated, flameproof enclosure combines 3 one end and is connected with silencer exhaust outlet 4, and the other end is connected with the end of blast pipe 1, fire prevention filtering
The small tapered end 2 of net 13 is in blast pipe 1.
The gas with fire combustion is produced after gaseous mixture burns through catalyst 9 and sequentially passes through through hole 8, baffle plate 10, exhaust inner tube
6th, silencer exhaust outlet 4, fire prevention screen pack 13, blast pipe 1 are discharged.
The beneficial effects of the utility model are to solve portable hedge trimmer containing catalyst because muffler volume is small, go out
Flame problem during the anticlimax rotating speed that fiery structure setting is simple and exists, structure letter is dexterously added in muffler body exhaust ports
The low flameproof enclosure combination fire extinguishing structure of single, cost, when the flame produced in silencer prevents fires screen pack by taper, through first receiving
Mesh disperses after collection, so as to reach the purpose of effective flame arrest, thoroughly solves the flame phenomenon of silencer, makes portable containing catalyst
Hedgeclipper can meet the Anti-flame authentication requesting such as U.S. USDA.
Obvious the utility model, which is implemented, to be not subject to the restrictions described above, as long as employing method of the present utility model
The improvement for the various unsubstantialities that design and technical scheme are carried out, within protection domain of the present utility model.
Claims (6)
1. a kind of silencer flame arrest structure, including it is built-in with the muffler body of catalyst and the blast pipe of discharge waste gas, its feature
It is：Combined between the muffler body and blast pipe provided with flameproof enclosure, the fire prevention of the flameproof enclosure combination provided with taper
Filter screen and connect firmly blast pipe and the locking cap of muffler body.
2. silencer flame arrest structure according to claim 1, it is characterised in that：The fire prevention screen pack is placed on blast pipe
It is interior, and large awl end is connected with muffler body exhaust outlet.
3. silencer flame arrest structure according to claim 2, it is characterised in that：The small tapered end of the fire prevention screen pack is mediated
It is integrated.
4. silencer flame arrest structure according to claim 1, it is characterised in that：The muffler body is divided into by dividing plate to be communicated
Two chambers, be provided with catalyst, chamber two in chamber one and be provided with baffle plate.
5. silencer flame arrest structure according to claim 4, it is characterised in that：One end is additionally provided with by waste gas in the chamber two
Discharge the exhaust inner tube outside muffler body.
6. any one of the silencer flame arrest structure according to claim 1 to 5, it is characterised in that：The fire prevention screen pack
Mesh is preferably the mesh of 30 mesh~36.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720107090.3U CN206503626U (en) | 2017-02-04 | 2017-02-04 | A kind of silencer flame arrest structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720107090.3U CN206503626U (en) | 2017-02-04 | 2017-02-04 | A kind of silencer flame arrest structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206503626U true CN206503626U (en) | 2017-09-19 |
Family
ID=59834556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720107090.3U Active CN206503626U (en) | 2017-02-04 | 2017-02-04 | A kind of silencer flame arrest structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206503626U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106640286A (en) * | 2017-02-04 | 2017-05-10 | 山东华盛农业药械有限责任公司 | Flame damping structure of silencer |
-
2017
- 2017-02-04 CN CN201720107090.3U patent/CN206503626U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106640286A (en) * | 2017-02-04 | 2017-05-10 | 山东华盛农业药械有限责任公司 | Flame damping structure of silencer |
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