CN104234794A - Noise reduction type tail gas filter - Google Patents
Noise reduction type tail gas filter Download PDFInfo
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- CN104234794A CN104234794A CN201410444733.4A CN201410444733A CN104234794A CN 104234794 A CN104234794 A CN 104234794A CN 201410444733 A CN201410444733 A CN 201410444733A CN 104234794 A CN104234794 A CN 104234794A
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- Prior art keywords
- filter
- gas
- pipe
- noise
- exhaust pipe
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- Processes For Solid Components From Exhaust (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
The invention relates to a noise reduction type tail gas filter, which comprises a first exhaust pipe (2), a square gas distributing pipe (3), and a second exhaust pipe (4), wherein the first exhaust pipe (2) is connected with an automobile engine, the square gas distributing pipe (3) is connected with the first exhaust pipe (2), the second exhaust pipe (4) is connected with the gas distributing pipe (3), a filter (1) is arranged in the gas distributing pipe (3) and comprises a tube body (1.1), and a filter net (1.2) and a ceramic honeycomb carrier (1.3) are sequentially arranged in the tube body (1.1) along the air flow direction. The noise reduction type tail gas filter has the advantages that tail gas enters the filter to be subjected to two-stage filtering in two paths under the effect of the gas distributing pipe, the tail gas with the major ingredients of CO, HC and NOx takes reaction to generate CO2, H2O, N2 and O2, meanwhile, black smoke particles in the waste gas can be effectively filtered through micro pores formed in separation walls, the filtered tail gas enters a silencing circular disc of the second exhaust pipe for noise reduction, and the normal life of people is ensured.
Description
Technical field
The present invention relates to a kind of noise-reducing type exhaust gas filter, for purifying vehicle exhaust.Belong to automobile equipment technical field.
Background technique
At present, common automobile noise reduction type exhaust gas filter uses NO, the NO in catalyzer and vehicle exhaust
2react with CO, generate CO
2and N
2these two kinds of uncontaminated gases, but the automobile being equipped with diesel engine, owing to containing black smoke particle in the tail gas of diesel engine, existing noise-reducing type exhaust gas filter can not effectively filter black smoke particle, can cause environmental pollution like this; Also produce huge noise in automobilism, affect daily life.
Summary of the invention
The object of the invention is to overcome above-mentioned deficiency; provide a kind of noise-reducing type exhaust gas filter; this noise-reducing type exhaust gas filter also can filter black smoke particle while filtering CO, HC, NOx harmful gas in vehicle exhaust; and at high temperature black smoke particle can progressively burn and be oxidized, and noise when can effectively reduce automobile exhaust.
The object of the present invention is achieved like this:
A kind of noise-reducing type exhaust gas filter, be characterized in: described noise-reducing type exhaust gas filter comprises the downtake pipe of connecting automobile engine, and the gas-distributing pipe of " mouth " font of connection downtake pipe, and connect the second exhaust pipe of gas-distributing pipe, filter is provided with in described gas-distributing pipe, the noise reduction disk axially fastened is provided with in described second exhaust pipe, described noise reduction disk is provided with main gas port and point gas port, described filter comprises cylindrical shell, filter screen and ceramic honeycomb carrier is disposed with along airflow direction in cylindrical shell, described ceramic honeycomb carrier is corresponding with the inwall of cylindrical shell, and ceramic honeycomb carrier is densely covered with pore in the axial direction, one end of described pore is opening, the other end is provided with shutoff face, described shutoff face and open space are arranged, described adjacent two pores are provided with next door, next door have in cellular micropore, next door is coated with catalyst coat.
A kind of noise-reducing type exhaust gas filter of the present invention, its filter and downtake pipe junction point and filter and second exhaust pipe junction point are all welded with air guide leaf.
A kind of noise-reducing type exhaust gas filter of the present invention, its main gas port has one, and described point of gas port has multiple and arrange triangular in shape.
A kind of noise-reducing type exhaust gas filter of the present invention, the hole count of its pore is 600 holes/square inch.
A kind of noise-reducing type exhaust gas filter of the present invention, the thickness in its next door is 0.13 ~ 0.14mm.
Compared with prior art, the invention has the beneficial effects as follows:
A kind of noise-reducing type exhaust gas filter of the present invention, under the effect of gas-distributing pipe, tail gas divides two-way to enter filter, under filter screen and ceramic honeycomb carrier double-filtration, is the tail gas of CO, HC, NOx, is reacted into CO by main component
2, H
2o, N
2and O
2, the micropore simultaneously on next door can black smoke particle effectively in filtering exhaust, and under the effect of catalyst coat black smoke particle can burned fall, further increase tail gas clean-up effect; Be provided with the noise reduction disk axially fastened in second exhaust pipe, described noise reduction disk is provided with main gas port and point gas port, can effectively reduce noise during automobile exhaust.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of noise-reducing type exhaust gas filter of the present invention.
Fig. 2 is the structural representation of filter of the present invention.
Fig. 3 is the schematic cross-section of ceramic honeycomb carrier of the present invention.
Fig. 4 is the partial axial section figure of ceramic honeycomb carrier of the present invention.
Fig. 5 is the structural representation in the next door of ceramic honeycomb carrier of the present invention.
Fig. 6 is the structural representation of noise reduction disk of the present invention.
In figure:
Filter 1,
Cylindrical shell 1.1
Filter screen 1.2,
Ceramic honeycomb carrier 1.3,
Pore 1.3.1,
Shutoff face 1.3.2,
Next door 1.3.3,
Micropore 1.3.4,
Catalyst coat 1.3.5
Opening 1.3.6,
Inlet exhaust gas 1.4,
Offgas outlet 1.5,
Downtake pipe 2,
Gas-distributing pipe 3,
Second exhaust pipe 4,
Noise reduction disk 5,
Main gas port 5.1,
Divide gas port 5.2,
Air guide leaf 6,
Tail gas 7.
Embodiment
See Fig. 1, the present invention relates to a kind of noise-reducing type exhaust gas filter, it comprises the downtake pipe 2 of connecting automobile engine, and the gas-distributing pipe 3 of " mouth " font of connection downtake pipe 2, and the second exhaust pipe 4 of the gas-distributing pipe 3 of connection " mouth " font, filter 1 is provided with, itself and downtake pipe 2 junction point and be all welded with air guide leaf 6 with second exhaust pipe 4 junction point in described " mouth " font gas-distributing pipe 3.
See being provided with the noise reduction disk 5 axially fastened in second exhaust pipe described in Fig. 64, described noise reduction disk 5 is provided with main gas port 5.1 and point gas port 5.2, and described main gas port 5.1 has one, and described point of gas port 5.2 arranges triangular in shape.
See Fig. 2, described filter 1 comprises cylindrical shell 1.1, filter screen 1.2 and ceramic honeycomb carrier 1.3 is disposed with along airflow direction in cylindrical shell 1.1, the left end of cylindrical shell 1.1 is inlet exhaust gas 1.4, right-hand member is offgas outlet 1.5, under the effect of filter screen 1.2 and ceramic honeycomb carrier 1.3, effectively can filter vehicle exhaust, avoid pollution of atmosphere.
See Fig. 3-5, described ceramic honeycomb carrier 1.3 is corresponding with the inwall of cylindrical shell 1.1, and ceramic honeycomb carrier 1.3 is densely covered with pore 1.3.1 in the axial direction, one end of described pore 1.3.1 is opening 1.3.6, the other end is provided with shutoff face 1.3.2, and described shutoff face 1.3.2 and opening 1.3.6 interval are arranged, described adjacent two pore 1.3.1 are provided with next door 1.3.3, next door 1.3.3 has in cellular micropore 1.3.4, next door 1.3.3 is coated with catalyst coat 1.3.5.
Wherein, the hole count of pore 1.3.1 is 600 holes/square inch, and the thickness of next door 1.3.3 is 0.13 ~ 0.14mm.
Working principle: the present invention adopts cordierite to be made into honeycomb ceramic carrier, and be built in the filter 1 of diesel engine, the waste gas with black smoke particle that diesel engine is discharged enters downtake pipe 2, under the effect of air guide leaf 6, separately two-way enters in the filter 1 in gas-distributing pipe 3, tail gas is by carrying out single filter during filter screen 2, then ceramic honeycomb carrier 1.3 is entered from the opening 1.3.6 of pore 1.3.1, because pore 1.3.1 is at one end opening 1.3.6, then shutoff face 1.3.2 at the other end, therefore waste gas can by the next door 1.3.3 with micropore 1.3.4, then discharge from the opening 1.3.6 of adjacent air holes 1.3.1, because the diameter of black smoke particle is large compared with micropore 1.3.4, therefore the black smoke particle in waste gas will be filtered and catch on next door 1.3.3, air-flow then passes from micropore 1.3.4, the tail gas of discharging from ceramic honeycomb carrier 1.3 enters second exhaust pipe 4, under the effect of noise reduction disk 5, effectively can reduce noise during automobile exhaust.
Described catalyst coat 1.3.5 contains the active rare earth of precious metal, and Main Ingredients and Appearance has Pt, Pd, Rh, Al
2o
3, Ce, La, Zr, Cu, Mn, when the waste gas (being mainly the harmful gases such as CO, HC, NOx) of diesel combustion is through micropore 1.3.4, the catalyst coat 1.3.5 be coated on the 1.3.3 of next door will strengthen CO, HC, NO
xthe activity of three kinds of gases, impel it to carry out certain oxidationreduction chemical reaction, wherein CO is at high temperature oxidized to colourless nontoxic carbon dioxide, and HC compound at high temperature resolves into water (H
2o) and carbon dioxide, NO
xbe reduced into nitrogen and oxygen.
When diesel exhaust gas temperature reaches 375 degrees Celsius; under the effect of catalyst coat 1.3.5; black smoke particle on the 1.3.3 of next door can progressively burn and be oxidized; the purification ratio of black smoke particle about reaches more than 85%; catalyzer and black smoke particle reaction when reaction temperature reaches 500 degrees Celsius thus perfect combustion are fallen (catalytic combustion), and now the purification ratio of black smoke particle can reach more than 90%.
Claims (5)
1. a noise-reducing type exhaust gas filter, it is characterized in that: described noise-reducing type exhaust gas filter comprises the downtake pipe (2) of connecting automobile engine, and the gas-distributing pipe (3) of " mouth " font of connection downtake pipe (2), and connect the second exhaust pipe (4) of gas-distributing pipe (3), filter (1) is provided with in described gas-distributing pipe (3), the noise reduction disk (5) axially fastened is provided with in described second exhaust pipe (4), described noise reduction disk (5) is provided with main gas port (5.1) and point gas port (5.2), described filter (1) comprises cylindrical shell (1.1), filter screen (1.2) and ceramic honeycomb carrier (1.3) is disposed with along airflow direction in cylindrical shell (1.1), described ceramic honeycomb carrier (1.3) is corresponding with the inwall of cylindrical shell (1.1), and ceramic honeycomb carrier (1.3) is densely covered with pore (1.3.1) in the axial direction, one end of described pore (1.3.1) is opening (1.3.6), the other end is provided with shutoff face (1.3.2), described shutoff face (1.3.2) and opening (1.3.6) interval are arranged, described adjacent two pores (1.3.1) are provided with next door (1.3.3), next door (1.3.3) has in cellular micropore (1.3.4), next door (1.3.3) is coated with catalyst coat (1.3.5).
2. a kind of noise-reducing type exhaust gas filter according to claim 1, is characterized in that: filter (1) is all welded with air guide leaf (6) with downtake pipe (2) junction point and filter (1) with second exhaust pipe (4) junction point.
3. a kind of noise-reducing type exhaust gas filter according to claim 1 and 2, is characterized in that: described main gas port (5.1) has one, and described point of gas port (5.2) has multiple and arrange triangular in shape.
4. a kind of noise-reducing type exhaust gas filter according to claim 1, is characterized in that: the hole count of described pore (1.3.1) is 600 holes/square inch.
5. a kind of noise-reducing type exhaust gas filter according to claim 1, is characterized in that: the thickness of described next door (1.3.3) is 0.13 ~ 0.14mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410444733.4A CN104234794A (en) | 2014-09-03 | 2014-09-03 | Noise reduction type tail gas filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410444733.4A CN104234794A (en) | 2014-09-03 | 2014-09-03 | Noise reduction type tail gas filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104234794A true CN104234794A (en) | 2014-12-24 |
Family
ID=52223587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410444733.4A Pending CN104234794A (en) | 2014-09-03 | 2014-09-03 | Noise reduction type tail gas filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104234794A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107191360A (en) * | 2016-03-15 | 2017-09-22 | 哈尔滨宏万智科技开发有限公司 | A kind of air compressor machine noise elimination filter device |
-
2014
- 2014-09-03 CN CN201410444733.4A patent/CN104234794A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107191360A (en) * | 2016-03-15 | 2017-09-22 | 哈尔滨宏万智科技开发有限公司 | A kind of air compressor machine noise elimination filter device |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20141224 |
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| WD01 | Invention patent application deemed withdrawn after publication |