CN2937495Y - Compound exhaust particle filter for diesel engine - Google Patents
Compound exhaust particle filter for diesel engine Download PDFInfo
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- CN2937495Y CN2937495Y CN 200620044892 CN200620044892U CN2937495Y CN 2937495 Y CN2937495 Y CN 2937495Y CN 200620044892 CN200620044892 CN 200620044892 CN 200620044892 U CN200620044892 U CN 200620044892U CN 2937495 Y CN2937495 Y CN 2937495Y
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Abstract
The utility model belongs to after-treatment technology field of diesel engine exhaust, and more specifically, relates to an exhaust-microparticle filtering device for composite diesel engine, which comprises a front cone tube, a filtering cavity and a rear cone tube, wherein the filtering cavity is cylinder-shaped, two ends respectively connecting with the front cone tube and the rear cone tube; another end of the front cone tube connects with the diesel engine exhaust inlet, and another end of the rear cone tube connects with filtered exhaust outlet; the filtering cavity is divided into two filtering room and a gas room, one filtering room having full-flow honeycomb ceramic filtering elements in parallel alignment and with square hole passage structure, another filtering room having ceramic small-ball filtering elements in spatial intensive alignment. The utility model has excellent filtering effect of diesel engine exhaust micro particles and is able to reduce the contents of HC and CO in exhaust, thereby reducing pollution to the environment; the utility model does not need an extra control device and may realize regeneration automatically; in addition, the utility model has favorable high temperature and mechanical impact resistance, strong environment adaptability, low cost and simple manufacture technology.
Description
Technical field
The utility model belongs to diesel engine vent gas post-processing technology field, is specifically related to a kind of compound supercharged diesel en gine exhaust micro particle filtering device.
Technical background
Diesel engine is widely used in fields such as communications and transportation, farm machinery and engineering machinery with its good and economic and power character.But the particle emission of diesel engine is higher, and environment and human body are all had very big harm, must take the outer reprocessing measure technology of machine to the particulate that diesel engine is discharged, and could satisfy following more strict Abgasgesetz.The micro particle filtering catcher is one of main device of present diesel particulate emission reprocessing in the world.Since nearly 20 years, many research has been carried out to the micro particle filtering technology in developed country such as Europe, the U.S. and Japan and area, has also carried out some application in industries such as some public transport and mining.
In the filtering material that current particle trapper adopted, mainly contain following four kinds: honeycomb ceramic filter, foamed ceramics, sintered metal mesh and ceramic fiber.The structural strength of honeycomb ceramic filter is higher, has thermal shock resistance and mechanical property preferably.Its filter efficiency height, but it has anisotropy, it is inhomogeneous to be heated during regeneration, and can cause scorification and break, and the manufacturing process complexity, cost is higher.It is very fast that its wall-flow type structure causes exhaust back pressure to rise, unfavorable to the diesel engine proper functioning.Foamed ceramics filters by the waste gas of the crisscross air chamber structure form that interweaves to diesel engine, and it has isotropy, and thermal shock resistance is strong.But its filter efficiency is lower, and flow resistance is big, and short texture, and mechanical strength is low, is prone to damage under exhaust impact and mechanical vibration.It is raw material that sintered metal mesh adopts multiple layer metal braiding silk screen, is the metal micro-holes material that forms by special stack-design, employing silk screen and powder compound suppressing sintering.Intensity is better, and is high temperature resistant, and filter efficiency is higher.But complex manufacturing technology, the cost height.Ceramic fiber has altimeter areaization and good high-temperature resistance, the filter efficiency height, but it is a kind of brittle material, complex manufacturing, and filtration time is short, the regeneration frequency height, and more fragile.
In the diesel engine particle catcher working procedure, particulate is constantly accumulated in filter, and exhaust resistance increases, and when exhaust back pressure is elevated to a certain degree, can cause the working condition of diesel engine to worsen.At this moment, must take certain measure, with the particulate that removing traps, this process is called the regeneration of catcher.Mostly adopt following two class technology at present: a class technology is to adopt heating technology to improve the temperature of diesel exhaust gas or filter, such as fuel Heating, electric heating, microwave heating or the like, provide an outside high temperature condition by heating, the particulate that filters internal deposition is burnt.The complex structure of these methods needs an extra cover control gear, has increased the complexity of system, and reliability and Security are relatively poor; Another kind of technology is by adding catalyzer at fuel oil or filter surface, reduce the reaction activity of particulate, thereby reduce the initiation temperature of particulate, make its oxidation under the normal exhaust temperature, realizing the regeneration of filter.In the device of existing this technology of use, mainly adopt the filtration of wall-flow type, it is very fast often to cause exhaust back pressure to rise, and diesel quality is required harsh.
Though the micro particle filtering technology makes significant progress, above many captures and regeneration scheme have appearred, but see yet at present particulate is not had good filtering effect, low flow resistance, heat shock resistance and mechanical shock, adapt to regeneration techniques and the low desirable filtrating equipment of fabricating cost.
Summary of the invention
It is a kind of simple in structure that the utility model purpose is to provide, the compound supercharged diesel en gine particle filter that filtering effect is good.
The compound supercharged diesel en gine particle filter that the utility model proposes, form (its structure as shown in Figure 1) by inner cone tube 1, filtering cavity 2, rear conical-tube 5, wherein, filtering cavity 2 is tubular construction, the one end connects inner cone tube 1, the other end connects rear conical-tube 5, and the other end of inner cone tube 1 connects diesel engine vent gas suction port 7, and the other end of rear conical-tube 5 connects the relief opening 8 behind the tail gas filtering; Filtering cavity 2 is divided into filter chamber 3, chamber, gap 6 and filter chamber's 4 three cell structures, and chamber, gap 6 is between filter chamber 3, filter chamber 4; Be provided with honeycomb ceramic filter element 9 in the filter chamber 3, the square hole channel design of this honeycomb ceramic filter element 9 for being arranged in parallel; Be provided with ceramic bead filter element 10 in the filter chamber 4, this ceramic bead filter element 10 is with space mode dense arrangement.
In the utility model, honeycomb ceramic filter element 9 separates with thin-walled 11, and thin-walled 11 is " well " word arrangement, and the centre is hollow square hole channel design, and hole density is 200-400cpsi (hole/square inch), and thin-walled 11 thickness are 0.15-0.30mm.
In the utility model, the particle diameter of ceramic bead filter element 10 is 3-6mm.
In the utility model, the length of chamber, gap 6 is the 20-40% of filtering cavity 2 length overalls.
In the utility model, ceramic bead filter element 10 is solid spherical ceramic bead.
In the utility model, ceramic bead filter element 10 is for there to be 1-30 hole to pass the ceramic bead of porcelain ball inside.Use micropore porcelain ball to improve capture and purifying effect, the particulate treatment effect further improves.
In the utility model, ceramic bead filter element 10 has the 1-30 bar ceramic bead of groove at random for porcelain ball surface.Use surface grooves porcelain ball to improve capture and purifying effect, the particulate treatment effect further improves.
In the utility model, filtering cavity is a kind of of cylindrical shape or cylindroid.
The diesel engine particulate trap device that the utility model proposes comprises ceramic bead filter element, full flow type honeycomb ceramic filter element and filtering cavity, housing main body is a tubular, can be cylinder or cylindroid etc., the rear conical-tube that has the inner cone tube of suction port and have a relief opening is sealedly attached to the rear and front end of tubular body.In the tubular body is two sections filter chambers of upstream and downstream, the integral honeycomb pottery is flowed in the indoor employing of upstream filtering entirely, interior surface thereof applies oxidation catalyst, the indoor employing of downstream filter is to be full of the compact arranged ceramic bead of space mode, this ceramic bead is a heat accumulating type porcelain ball, the middle chamber, gap of leaving suitable distance, two sections filter chambers.
Working procedure of the present utility model is: the tail gas that diesel engine is discharged enters inner cone tube 1 from suction port 7, then enter filtering cavity 2, full stream, the honeycomb ceramic filter element 9 of waste gas that contains particulate by having the oxidation catalysis effect in the filter chamber 3, most of HC in part particulate, the exhaust and CO are under the oxidation catalysis effect, by catalytic combustion, through these parts, honeycomb ceramic filter element temperature and delivery temperature all obtain rising, and have further improved the effect of oxidation catalysis.Then, exhaust band after the intensification remaining particulate etc. by chamber, gap 6, enter filter chamber 4, ceramic bead filter element in the filter chamber captures remaining particulate, and it is deposited on porcelain ball surface, these porcelain balls have good heat storage capacity, under the effect of high-temperature exhaust air deposited particles are fully burnt, and realize the regeneration of filter.Through capture, oxidation catalysis and the burning of two filter chambers, the purifying effect of exhaust gas particulate improves greatly.
The utility model can be realized the regeneration of filter.Through capture, oxidation catalysis and the burning of the indoor filter element of double-filtration up and down, the purifying effect of exhaust gas particulate improves greatly, and filtrating equipment is achieved regeneration.
The advantage of diesel particulate filtration devices of the present utility model is:
1, effective to Diesel Particulate Filter, and reduce HC and CO in the exhaust simultaneously, significantly reduced pollution to environment.
2, use the utility model regeneration need not control gear, can realize regeneration automatically, simple and reliable for structure and respond well, exhaust back pressure is low, and be little to power character and oil consumption influence.
3, has good high temperature resistant and anti-mechanical shock performance.
4, not harsh to the requirement of diesel quality.
5, the utility model is strong to the working environment adaptive capacity, can be widely used in occasions such as diesel-driven vehicle, engineering machinery, boats and ships.
6, cost is low, and preparation process is simple, and the catcher profile variation is many, and is easy to utilize.
Description of drawings
Fig. 1 is a structural diagrams of the present utility model.
Fig. 2 is the cross-sectional structure diagram of honeycomb ceramic filter element 9.
Number in the figure: 1 is the inner cone tube, and 2 is filtering cavity, and 3 is the filter chamber, and 4 is the filter chamber, and 5 is rear conical-tube, and 6 is the chamber, gap, and 7 is suction port, and 8 is relief opening, and 9 is the honeycomb ceramic filter element, and 10 is the ceramic bead filter element, and 11 is thin-walled.
Embodiment
Further specify the utility model below by embodiment.
The compound supercharged diesel en gine particle filter is made up of inner cone tube 1, filter chamber 2, rear conical-tube 5, filtering cavity 2 is cylindrical, diameter is 150-300mm, the one end connects inner cone tube 1, the other end connects rear conical-tube 5, the other end of inner cone tube 1 connects diesel engine vent gas suction port 7, and the other end of rear conical-tube 5 connects the relief opening 8 behind the tail gas filtering; Filtering cavity 2 is divided into filter chamber 3, chamber, gap 6 and filter chamber's 4 three cell structures, and chamber, gap 6 is between filter chamber 3, filter chamber 4; Filter chamber 3 is one section full stream integral honeycomb pottery, in be provided with honeycomb ceramic filter element 9, these honeycomb ceramic filter element 9 shape of cross sections as shown in Figure 2, square hole is the passage of air-flow, hole density is 300cpsi; thin-walled 11 wall thickness are 0.20mm, and the inner surface of square hole scribbles oxidation catalyst; Be provided with the ceramic bead filter element 10 with space mode dense arrangement in the filter chamber 4, this ceramic bead is solid spherical ceramic bead, and its particle diameter is 5mm.Leave suitable space in the middle of two sections filter chambers 3 and 4 and constitute chamber, gap 6, these chamber, gap 6 length are 30% of filtering cavity 2 length overalls, and filter chamber 3 is identical with the length of filter chamber 4.The diameter of filter chamber 3, filter chamber 4 and chamber, gap 6 is all identical with the inner chamber cross section of shell 2.
Claims (8)
1, a kind of compound supercharged diesel en gine particle filter, form by inner cone tube (1), filtering cavity (2), rear conical-tube (5), it is characterized in that filtering cavity (2) is tubular construction, the one end connects inner cone tube (1), the other end connects rear conical-tube (5), the other end of inner cone tube (1) connects diesel engine vent gas suction port (7), and the other end of rear conical-tube (5) connects the relief opening (8) behind the tail gas filtering; Filtering cavity (2) is divided into filter chamber (3), chamber, gap (6) and filter chamber's (4) three cell structures, and chamber, gap (6) are positioned between filter chamber (3), filter chamber (4); Be provided with honeycomb ceramic filter element (9) in the filter chamber (3), the square hole channel design of this honeycomb ceramic filter element (9) for being arranged in parallel; Be provided with ceramic bead filter element (10) in the filter chamber (4), this ceramic bead filter element (10) is with space mode dense arrangement.
2, compound supercharged diesel en gine particle filter according to claim 1, it is characterized in that honeycomb ceramic filter element (9) separates with thin-walled (11); thin-walled (11) is " well " word arrangement; the centre is hollow square hole channel design; hole density is 200-400 hole/square inch, thin-walled (11) thickness is 0.15-0.30mm.
3, compound supercharged diesel en gine particle filter according to claim 1, the particle diameter that it is characterized in that ceramic bead filter element (10) is 3-6mm.
4, compound supercharged diesel en gine particle filter according to claim 1, the length that it is characterized in that chamber, gap (6) are the 20-40% of filtering cavity (2) length overall.
5, compound supercharged diesel en gine particle filter according to claim 1 is characterized in that ceramic bead filter element (10) is solid spherical ceramic bead.
6, compound supercharged diesel en gine particle filter according to claim 1 is characterized in that ceramic bead filter element (10) is for there to be 1-30 hole to pass the ceramic bead of porcelain ball inside.
7, compound supercharged diesel en gine particle filter according to claim 1 is characterized in that ceramic bead filter element (10) has the 1-30 bar ceramic bead of groove at random for porcelain ball surface.
8, compound supercharged diesel en gine particle filter according to claim 1 is characterized in that filtering cavity (2) is a kind of of cylindrical shape or cylindroid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620044892 CN2937495Y (en) | 2006-08-17 | 2006-08-17 | Compound exhaust particle filter for diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620044892 CN2937495Y (en) | 2006-08-17 | 2006-08-17 | Compound exhaust particle filter for diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2937495Y true CN2937495Y (en) | 2007-08-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620044892 Expired - Fee Related CN2937495Y (en) | 2006-08-17 | 2006-08-17 | Compound exhaust particle filter for diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2937495Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103850757A (en) * | 2014-03-06 | 2014-06-11 | 冯柏金 | Tail gas filter unit for diesel engine |
| CN107503827A (en) * | 2017-08-15 | 2017-12-22 | 合肥横冲机械科技有限公司 | A kind of efficient automobile exhaust purifier |
-
2006
- 2006-08-17 CN CN 200620044892 patent/CN2937495Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103850757A (en) * | 2014-03-06 | 2014-06-11 | 冯柏金 | Tail gas filter unit for diesel engine |
| CN107503827A (en) * | 2017-08-15 | 2017-12-22 | 合肥横冲机械科技有限公司 | A kind of efficient automobile exhaust purifier |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070822 Termination date: 20100817 |