CN205840970U - A kind of preprocessor for diesel engine - Google Patents
A kind of preprocessor for diesel engine Download PDFInfo
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- CN205840970U CN205840970U CN201620711963.7U CN201620711963U CN205840970U CN 205840970 U CN205840970 U CN 205840970U CN 201620711963 U CN201620711963 U CN 201620711963U CN 205840970 U CN205840970 U CN 205840970U
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- preprocessor
- fluidized bed
- diesel engine
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Abstract
This utility model relates to a kind of preprocessor for diesel engine, belongs to diesel engine emissions technical field.This preprocessor includes that inside is disposed with the gas exhaust piping of DOC, fluidized bed mixer and SCR；Described fluidized bed mixer includes the fixing axle being positioned at gas exhaust piping central axis and is fixed on the helical blade on fixing axle, and the edge of helical blade all contacts with the inwall of gas exhaust piping；The material of described fluidized bed mixer is rustless steel, and the outlet side of cylinder is connected with gas exhaust piping.Motor exhaust, when by this utility model preprocessor, aoxidizes, the catalytic reaction such as reduction, thus reduces the discharge of pollutant.Length while shortening, can't be affected the efficiency of catalytic reaction, reduce C, H and NO in tail gas by this utility model preprocessorXThe purpose polluted air Deng emission, its simple in construction, volume is little, beneficially the layout of car load.
Description
Technical field
This utility model belongs to diesel engine emissions technical field, is specifically related to a kind of post processing for diesel engine
Device.
Background technology
Electromotor reduces C, H and NO in tail gas by preprocessorXDeng the discharge of emission, current preprocessor
Not by integrated with SCR device (SCR) for oxidation catalyzer (DOC), or integrated after cause catalytic efficiency to reduce.Do not collect
The preprocessor become, a length of about 2000mm, because length is long, cause arrangement difficult, and integrated preprocessor, long
Degree is about 1200mm, if internal structure layout is improper, catalytic efficiency will be caused to reduce, thus affect discharge.The most how
Overcoming the deficiencies in the prior art is the problem that current diesel engine emissions technical field needs solution badly.
Utility model content
The purpose of this utility model is to solve the deficiencies in the prior art, it is provided that a kind of post processing for diesel engine
Device, this utility model volume is little, saves space, facilitates the layout of car load, and avoids and cause SCR to be catalyzed because of Distance Shortened
The reduction of efficiency and the problem that affects discharge.
For achieving the above object, the technical solution adopted in the utility model is as follows:
A kind of preprocessor for diesel engine, is fixed with the cylinder of DOC, fluidized bed mixer and SCR successively including inside
Body；Described fluidized bed mixer includes the fixing axle being positioned at body centre axle and is fixed on the helical blade on fixing axle,
The edge of helical blade all contacts with the inwall of cylinder；The material of described fluidized bed mixer is rustless steel, giving vent to anger of cylinder
End is connected with gas exhaust piping.
It is further preferred that a length of 173mm of described fluidized bed mixer, pitch length is 85mm.
It is further preferred that the described stainless steel tube that fixing axle is hollow, and stainless steel tube two ends employing closure plate weldering
Connect closure, with prevent air-flow directly from fixing axle centrally through, cause fraction mixing inequality.
It is further preferred that the material of described cylinder is rustless steel, wall thickness is 1.2-1.5mm.
This utility model arranges the fluidized bed mixer of a sped structure between DOC and SCR of preprocessor.Though
Distance Shortened between DOC and SCR, but the fluidized bed mixer of sped structure can extend gas mixing in pipeline away from
From with incorporation time so that gas enters back in SCR after sufficiently being mixed, and SCR will be caused to urge because of Distance Shortened
Change the reduction of efficiency and affect discharge.
Compared with prior art, it has the beneficial effect that this utility model
(1) this utility model simple in construction, volume is little, and overall length is only about 1110mm, beneficially the layout of car load；Because of air-flow
Blender have employed sped structure, though the total length of helical mixer only has 173mm, but the coverage of air-flow mixing can
Reach the length of about 810mm.Do not cause the reduction of SCR catalytic efficiency because of the shortening of preprocessor length, be also beneficial to whole
The layout of car.
(2) this utility model preprocessor can ensure that the catalytic efficiency of preprocessor, reduces discharge, it is to avoid C, H and NOXDeng
The pollution that air is caused by emission.
(3) DOC with SCR is integrated in one by this utility model, can facilitate the layout of car load and reduce the labor of setter
Fatigue resistance so that it is convenient efficiently, improve production efficiency.
Accompanying drawing explanation
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, below will be to embodiment
Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, the accompanying drawing in describing below is only
It is embodiments more of the present utility model, for those of ordinary skill in the art, before not paying creative work
Put, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is this utility model structural representation for the preprocessor of diesel engine；
Fig. 2 is the A-A sectional view of Fig. 1；
Fig. 3 is the schematic diagram that this utility model gas flows through fluidized bed mixer；
Wherein, 1, DOC；2, fluidized bed mixer；3、SCR；4, fixing axle；5, helical blade；6, gas exhaust piping；7, cylinder；
The direction of arrow is air flow direction.
Detailed description of the invention
Below in conjunction with embodiment, this utility model is described in further detail.
It will be understood to those of skill in the art that the following example is merely to illustrate this utility model, and should not be regarded as limiting
Scope of the present utility model.Unreceipted concrete technology, annexation or condition person in embodiment, according to the document institute in this area
Describe technology, annexation or condition or carry out according to product description.The unreceipted production firm of material therefor, equipment
Person, is the conventional products that can be obtained by purchase.
As shown in Figure 1-Figure 3, a kind of preprocessor for diesel engine, it is fixed with DOC1, air-flow successively including inside
The cylinder 7 of blender 2 and SCR 3；Described fluidized bed mixer 2 includes the fixing axle 4 being positioned at cylinder 7 central axis and fixes
Helical blade 5 on fixing axle, the edge of helical blade 5 all inwalls with cylinder 7 contact, described fluidized bed mixer 2
Material be rustless steel, the outlet side of cylinder 7 is connected with gas exhaust piping 6.
The a length of 173mm of described fluidized bed mixer 2, pitch length is 85mm.
Described fixing axle 4 is preferably the stainless steel tube of hollow, and stainless steel tube two ends use closure plate welding closure, in case
Only air-flow directly from fixing axle centrally through, cause fraction mixing inequality.
The material of described cylinder 7 is rustless steel, and wall thickness is 1.2-1.5mm.
This utility model arranges the fluidized bed mixer of a sped structure between DOC and SCR of preprocessor.Though
Distance Shortened between DOC and SCR, but the fluidized bed mixer of sped structure can extend gas mixing in pipeline away from
From with incorporation time so that gas enters back in SCR after sufficiently being mixed, so not because of vertical dimension between DOC and SCR
Shortening and cause the reduction of SCR catalytic efficiency.DOC with SCR is integrated in one simultaneously, layout and the fall of car load can be facilitated
The labor intensity of low setter so that it is convenient efficiently, improve production efficiency.
Of the present utility model ultimate principle, principal character and of the present utility model advantage have more than been shown and described.One's own profession
Skilled person will appreciate that of industry, this utility model is not restricted to the described embodiments, described in above-described embodiment and description
Principle of the present utility model is simply described, on the premise of without departing from this utility model spirit and scope, this utility model is also
Have various changes and modifications, in the range of these changes and improvements both fall within claimed this utility model.This utility model
Claimed scope is defined by appending claims and equivalent thereof.
Claims (4)
1. the preprocessor for diesel engine, it is characterised in that include that inside is fixed with DOC(1 successively), air-flow mixing
Device (2) and cylinder (7) SCR(3)；Described fluidized bed mixer (2) includes the fixing axle (4) being positioned at cylinder (7) central axis
And the helical blade (5) being fixed on fixing axle, the edge of helical blade (5) all inwalls with cylinder (7) contact；Described
The material of fluidized bed mixer (2) be rustless steel, the outlet side of cylinder (7) is connected with gas exhaust piping (6).
Preprocessor for diesel engine the most according to claim 1, it is characterised in that described fluidized bed mixer (2)
A length of 173mm, pitch length is 85mm.
Preprocessor for diesel engine the most according to claim 1, it is characterised in that during described fixing axle (4) is
Empty stainless steel tube, and stainless steel tube two ends employing closure plate welding closure.
Preprocessor for diesel engine the most according to claim 1, it is characterised in that the material of described cylinder (7)
For rustless steel, wall thickness is 1.2-1.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620711963.7U CN205840970U (en) | 2016-07-08 | 2016-07-08 | A kind of preprocessor for diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620711963.7U CN205840970U (en) | 2016-07-08 | 2016-07-08 | A kind of preprocessor for diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205840970U true CN205840970U (en) | 2016-12-28 |
Family
ID=58150461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620711963.7U Active CN205840970U (en) | 2016-07-08 | 2016-07-08 | A kind of preprocessor for diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205840970U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111502871A (en) * | 2020-04-14 | 2020-08-07 | 广西玉柴机器股份有限公司 | Aftertreatment system with dual-oxidation catalytic converter |
| CN113006905A (en) * | 2021-03-30 | 2021-06-22 | 南通大学 | Device and method for catalytic purification of tail gas of supergravity multi-curve-disc diesel engine |
-
2016
- 2016-07-08 CN CN201620711963.7U patent/CN205840970U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111502871A (en) * | 2020-04-14 | 2020-08-07 | 广西玉柴机器股份有限公司 | Aftertreatment system with dual-oxidation catalytic converter |
| CN113006905A (en) * | 2021-03-30 | 2021-06-22 | 南通大学 | Device and method for catalytic purification of tail gas of supergravity multi-curve-disc diesel engine |
| CN113006905B (en) * | 2021-03-30 | 2022-05-17 | 南通大学 | Device and method for catalytic purification of tail gas of supergravity multi-curve-disc diesel engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |