CN203499772U - Diesel engine exhaust purifying device - Google Patents
Diesel engine exhaust purifying device Download PDFInfo
- Publication number
- CN203499772U CN203499772U CN201320389398.3U CN201320389398U CN203499772U CN 203499772 U CN203499772 U CN 203499772U CN 201320389398 U CN201320389398 U CN 201320389398U CN 203499772 U CN203499772 U CN 203499772U
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- CN
- China
- Prior art keywords
- outlet pipe
- storage tank
- liquid storage
- filter element
- filter core
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Abstract
The utility model relates to a diesel engine exhaust purifying device, which is mainly composed of a metal shell, a vent pipe front section, a filter element, a liquid storage tank, an air draft device, an airflow valve and the like, wherein when the vent pipe front section and a vent pipe rear section are different in pipe diameter ratio, and the air draft device is additionally arranged on the rear end of the filter element; negative pressure is formed within the vent pipe rear section; exhaust in the filter element is drained out, so that a vent pipe is changed into initiative venting from passive venting; the purified liquid storage tank is additionally arranged below the filter element; as purified liquid contains a self-cleaning agent and NOX catalyst, and the filter element accomplishes oriented moisture absorption, particles and NOX are catalyzed and decomposed by the catalyst; therefore, the regeneration of the filter element is realized, and the frequent replacement of the filter element is avoided; when the displacement of an engine is excessively large, the airflow valve can be automatically opened for exhausting tail gas to guarantee the normal work of the engine; at 5-36V working voltage of the air draft device, the use safety of the device is guaranteed.
Description
Technical field
The utility model relates to a kind of diesel engine exhaust gas purification device, specifically refers to not reducing motor mobility, reducing under the prerequisite of oil consumption, and to catch the particulate matter in diesel engine vent gas, oxidation NO
xit is main diesel engine exhaust gas purification device.
Background technique
Diesel engine is a large amount of a kind of motors that use in engineering, has the excellent properties such as power excellence, economy, strong adaptability.But being widely used of diesel engine also brought pollution, especially particulate matter and the NO even more serious compared with petrol engine
xdischarge, the serious harm mankind's health, is used in the urgent need to reducing diesel engine the harm bring.
In the machine of diesel particulate discharge, control technique has obtained remarkable result, such as high-pressure injection technology and turbocharging technology.Yet, by control technique in further improvement machine, improve oil inflame, thereby it is very limited to reduce granular material discharged Technology Potential, only have further improvement diesel engine vent gas post-processing technology, just can make diesel engine pollutant emission meet the requirement of discharging standards.Therefore,, for meeting following stricter emission regulation demands, must research and develop energetically diesel emission post-processing technology.
For reducing the Main Means of diesel engine vent gas particulate matter and harmful gas, comprise at present: particulate Trap Technology, oxidation catalyzer technology, non-thermal plasma trap, Electrostatic technology, Cyclone Separation Technology etc.And the technology such as oxidation catalyzer, low-temperature plasma, Electrostatic, cyclonic separation all need to install additional complicated device, increased energy consumption and the cost of diesel engine.Particulate Trap Technology has simple in structure, easy to operate feature, but particulate matter easily piles up in filter, produces back pressure, reduces diesel engine performance, must regularly remove particulate.
In recent years, someone proposes the method that adopts stainless (steel) wire successively to filter, and catches particulate matter.European Patent Publication No is No. EP2129452, open day is on January 21st, 2010, denomination of invention is " Aqueous solution for the treatment of diesel engine exhaust gases ", U.S. Patent Publication No. is No. 7229597, open day is on February 9th, 2012, denomination of invention is " Catalyzed SCR filter and emission treatment system ", China Patent Publication No. is CN202866939U, open day is on April 10th, 2013, denomination of invention discloses Fractions of Diesel Engine Exhaust Particulates thing filtrating equipment in succession for " a kind of diesel particulate filter of fast changeable filter core " etc., pass through filter core, catch the particulate matter in diesel engine vent gas, pass through again periodic cleaning and replacing, remove particulate matter and harmful components.Yet lack in this invention, process NO
xcomposition, and do not consider to install additional this and install issuable exhaust and hinder on outlet pipe.
In order to reduce the harmful matter in back pressure and abundant catalysis tail gas, U.S. Patent Publication No. is No. 8173087, open day is on May 8th, 2012, denomination of invention is that " Gasoline engine emissions treatment systems having particulate traps " installs three-element catalytic filtrating equipment by the downstream at outlet pipe, with the harmful matter in catalysis tail gas.Japanese patent application publication No. is No. JP2009208025, and open day is on September 17th, 2009, and denomination of invention is that " Diesel engine exhaust gas cleaning filter " adopts plasma catalytic device, improves the purification efficiency of tail gas particulate matter.But these methods are owing to there being exhaust resistance, and apparatus structure is complicated, and cost is higher has limited its application in diesel engine exhaust gas treatment device widely.
Summary of the invention
For the problem of above-mentioned existence, the purpose of this utility model is to provide a kind of can effectively remove particulate matter in diesel engine vent gas and the diesel engine exhaust gas purification device of harmful components, and to achieve these goals, its technical solution is:
A kind of diesel engine exhaust gas purification device, comprise metal shell, outlet pipe leading portion, outlet pipe back segment and be arranged on outlet pipe leading portion and outlet pipe back segment between filter core, between filter core and outlet pipe back segment, be fixedly installed extractor fan, above outlet pipe leading portion, be provided with draught damper, in metal shell, be provided with liquid storage tank, liquid storage tank is positioned at outlet pipe leading portion below, the lower end of filter core is positioned at liquid storage tank, the front panel of liquid storage tank is provided with feed pipe, liquid storage tank rear sidewall is provided with liquid-discharging tube, and liquid-discharging tube is positioned at the below of liquid storage tank rear sidewall.
The combination of one or more that the material of described filter core is weaving base fleece or felt or porous material.
The operating voltage of described extractor fan is 5 ~ 36V.
Owing to having adopted above technological scheme, the utility model, by installing wire netting additional in filter core front end and back end, installs extractor fan additional after filter core, installs purified solution liquid storage tank below filter core additional, filter core will be firmly fixed between extractor fan and outlet pipe leading portion, there will not be loosening and drop.The caliber ratio that extractor fan is different with section before and after outlet pipe, make formation negative pressure in outlet pipe back segment, before and after outlet pipe, in section, mineralization pressure is poor, thereby by the tail gas drainage in filter core out, the passive exhaust that becomes outlet pipe changes initiative exhaust into, in time the tail gas after processing is discharged, reduce back pressure and produce, improve the power character of motor.When diesel engine vent gas is when arriving wire netting, filter core by outlet pipe leading portion, particulate matter is held back by filter core, and the directed hygroscopic effect of filter core, orientation is adsorbed the purified solution in liquid storage tank, is enriched in inside and the surface of filter core, owing to containing automatically cleaning agent and NO in purified solution
xcatalyzer, particulate matter and NO
xcatalyzed dose of catalysis, degraded, the product of catalytic degradation, through the adsorption-desorption of purified solution, is got back in liquid storage tank, thereby has realized the regeneration of filter core, extends the time lag of filter element cleaning, has avoided the frequent replacing of filter core.Purified solution is long service time, can lose catharsis, can pass through the liquid-discharging tube effluent discharge of the below of liquid storage tank rear sidewall, and the feed pipe by liquid storage tank front panel provides new purified solution simultaneously.During filter element replacing, carbine can be taken off from the fixedly hangers of flange frame, extract filter core out, replace with new filter core, operation is very easy.When the air displacement of motor is excessive, tail gas accumulates before filtrating equipment, and the interior pressure of outlet pipe leading portion is increased, and draught damper is opened under the effect of interior pressure, gets rid of in time tail gas, guarantees the normal work of motor.Otherwise draught damper cuts out, purification plant carries out above-mentioned processing to tail gas.In addition, extractor fan adopts 5-36V operating voltage, within the scope of the safety voltage of human body, has guaranteed the Security that device is used.
Accompanying drawing explanation
Fig. 1 diesel engine exhaust gas purification device structural representation of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail, sees accompanying drawing 1.
Diesel engine exhaust gas purification device consists of metal shell 8, outlet pipe leading portion 1, filter core 2, liquid storage tank 4, extractor fan 3, draught damper 14 etc.In diesel engine exhaust gas purification device, the diameter of outlet pipe each several part has: D
3> D
2> D
1, and D
3=2D
1, D
2=1.5D
1, D wherein
1refer to the diameter of outlet pipe leading portion 1, D
2the diameter that refers to outlet pipe back segment, D
3refer on liquid storage tank 4 along the distance that arrives filter core 2 top metal housings 8, outlet pipe leading portion 1 and outlet pipe back segment are connected in the both sides of metal shell 8, filter core 2 is arranged between outlet pipe leading portion 1 and outlet pipe back segment, between filter core 2 and outlet pipe back segment, be fixedly installed extractor fan 3, extractor fan 3 can adopt induced draft fan or suction fan, above outlet pipe leading portion 1, be provided with draught damper 14, below outlet pipe leading portion, in housing, be provided with liquid storage tank 4, the lower end of filter core 2 is positioned at liquid storage tank 4, in liquid storage tank 4, store purified solution 5, contained automatically cleaning agent and NO in purified solution 5
xcatalyzer, particulate matter and NO
xthe front panel of catalyzed dose of catalysis, liquid storage tank 4 is provided with feed pipe 11, and liquid storage tank 4 rear sidewalls are provided with liquid-discharging tube 12, and liquid-discharging tube 12 is positioned at the below of liquid storage tank 4 rear sidewalls.The material of filter core 2 can adopt one or more combination of weaving base fleece or felt or porous material, and the operating voltage of extractor fan 3 is 5 ~ 36V.
In the waste gas that diesel engine produces, contain imperfect combustion particulate matter, NO
x, the harmful matter such as CO, through tail gas unit such as anterior filtration, noise reductions, the above-mentioned harmful matter of a part is adsorbed removal, the quality of tail gas obtains improvement to a certain extent, but still have the harmful matter of certain degree (with respect to NBS) residual, and hold back power character, increase oil consumption that reclaimer tends to reduce motor, cleaning of off-gas is the main purpose of exhaust gas processing device.But it is residual inevitably, in the process of filtering absorption, to have harmful matter.And under damp and hot condition, the harmful matter in tail gas is more easily adsorbed and catalysis, be more easily removed, so the use of purified solution is also extremely important.If diesel engine exhaust gas purification device has effective removal harmful matter concurrently and improves the feature of engine efficiency, will greatly improve the tail-gas quality of diesel emission and increase economic efficiency.The utility model is just based on above-mentioned principle, on existing exhaust pipe mechanism basis, by installing the new type purification device of tail gas additional, further diesel engine vent gas filtration, purification is processed, reach the object of removing harmful components in tail gas, reducing environmental pollution, increase economic efficiency.
The related diesel engine exhaust gas purification device of the utility model makes diesel engine vent gas when by outlet pipe, first through outlet pipe leading portion 1, arrive wire netting 13, filter core 2, filtration based on filter core 2, particulate matter is held back by filter core 2, and the directed hygroscopic effect of filter core 2, purified solution 5 in directed absorption liquid storage tank 4, is enriched in inside and the surface of filter core 2, contained automatically cleaning agent and NO in purified solution 5
xcatalyzer, particulate matter and NO
xcatalyzed dose of catalysis, degraded, the product of catalytic degradation, through the adsorption-desorption of purified solution, is got back in liquid storage tank 4, has realized the regeneration of filter core 2.In this process, due to D
3=2D
1, filter core 2 is large with the area of contact of tail gas, can guarantee particulate matter and harmful gas in abundant filtration, catalysis tail gas, and D
2=1.5D
1guarantee the smooth and easy of exhaust, can freely not produce back pressure because of exhaust.After filter core 2, tail gas arrives extractor fan 3, air drafting effect due to extractor fan 3, make formation negative pressure in outlet pipe back segment, between outlet pipe leading portion 1 and outlet pipe back segment, mineralization pressure is poor, thereby by the tail gas drainage in filter core 2 out, the passive exhaust that becomes outlet pipe transfers initiative exhaust to, in time the tail gas after processing is discharged, reduce back pressure and produce.In this process, because the caliber of before and after extractor fan 3 and outlet pipe section is than difference, there is P
4> P
3> P
2> P
1, and P
4> > P
2, P
5>=P
3, can guarantee that tail gas is along intake manifold---the direction of exhaust outlet flows, P
1refer to the pressure of final discharge tail gas, P
2refer to the pressure of tail gas after filter core 2, P
3refer to that tail gas enters the pressure before filter core 2, P
4refer to the pressure of outlet pipe leading portion 1 inner exhaust gas, P
5refer to the atmospheric pressure outside outlet pipe.Purified solution is long 5 service times, can lose catharsis, can pass through liquid-discharging tube 12 effluent discharges of the below of liquid storage tank 4 rear sidewalls, and the feed pipe 11 by liquid storage tank 4 front panels provides new purified solution 5 simultaneously.When filter core 2 is changed, carbine 7 can be taken off from the fixedly hangers 9 of flange frame 6, extract filter core 2 out, replace with new filter core 2, operation is very easy.When the air displacement of motor is excessive, tail gas accumulates before filtrating equipment, and the interior pressure of outlet pipe leading portion 1 is increased, and draught damper 14 is opened under the effect of interior pressure, gets rid of in time tail gas, guarantees the normal work of motor.In this process, when air displacement is large or the idle extreme case of extractor fan 3 under, have P
4> P
5, gas will be discharged by draught damper 14, so guarantee the normal work of motor.Otherwise draught damper 14 cuts out, purification plant carries out above-mentioned processing to tail gas.In addition, extractor fan 3 adopts 5-36V operating voltage, within the scope of the safety voltage of human body, has guaranteed the Security that device is used.
For further accurately controlling the discharge amount of tail gas, can on the circuit of extractor fan 3, install resistance or transformer additional, the vacuum magnitude in the outlet pipe that adjusting exhausting causes, effectively discharges tail gas, prevents that back pressure from producing.
Claims (3)
1. a diesel engine exhaust gas purification device, comprise metal shell (8), outlet pipe leading portion (1), outlet pipe back segment and be arranged on the filter core (2) between outlet pipe leading portion (1) and outlet pipe back segment, it is characterized in that: on the front/rear end of described filter core (2), be provided with wire netting (13), between filter core (2) and outlet pipe back segment, be fixedly installed extractor fan (3), in outlet pipe leading portion (1) top, be provided with draught damper (14), in metal shell (8), be provided with liquid storage tank (4), liquid storage tank (4) is positioned at outlet pipe leading portion (1) below, the lower end of filter core (2) is positioned at liquid storage tank (4), the front panel of liquid storage tank (4) is provided with feed pipe (11), liquid storage tank (4) rear sidewall is provided with liquid-discharging tube (12), liquid-discharging tube (12) is positioned at the below of liquid storage tank (4) rear sidewall.
2. according to the diesel engine exhaust gas purification device described in claims 1, it is characterized in that: described filter core (2) is a kind of for weaving base fleece or felt.
3.
?diesel engine exhaust gas purification device according to claim 1, is characterized in that: the operating voltage of described extractor fan (3) is 5 ~ 36V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320389398.3U CN203499772U (en) | 2013-07-02 | 2013-07-02 | Diesel engine exhaust purifying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320389398.3U CN203499772U (en) | 2013-07-02 | 2013-07-02 | Diesel engine exhaust purifying device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203499772U true CN203499772U (en) | 2014-03-26 |
Family
ID=50330761
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320389398.3U Withdrawn - After Issue CN203499772U (en) | 2013-07-02 | 2013-07-02 | Diesel engine exhaust purifying device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203499772U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103334817A (en) * | 2013-07-02 | 2013-10-02 | 武汉纺织大学 | Diesel engine tail gas purification device |
-
2013
- 2013-07-02 CN CN201320389398.3U patent/CN203499772U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103334817A (en) * | 2013-07-02 | 2013-10-02 | 武汉纺织大学 | Diesel engine tail gas purification device |
| CN103334817B (en) * | 2013-07-02 | 2016-03-02 | 武汉纺织大学 | A kind of diesel engine exhaust gas purification device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140326 Effective date of abandoning: 20160302 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20140326 Effective date of abandoning: 20160302 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |