CN202047882U - Diesel exhaust purifying device - Google Patents
Diesel exhaust purifying device Download PDFInfo
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- CN202047882U CN202047882U CN2011201447033U CN201120144703U CN202047882U CN 202047882 U CN202047882 U CN 202047882U CN 2011201447033 U CN2011201447033 U CN 2011201447033U CN 201120144703 U CN201120144703 U CN 201120144703U CN 202047882 U CN202047882 U CN 202047882U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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- Y02T10/40—Engine management systems
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Abstract
A diesel exhaust purifying device comprises a gas storage cylinder, a liquid storage tank, a mixing cavity and a control system, wherein a first gas pipeline is arranged between the gas storage cylinder and the mixing cavity, and a nozzle is arranged on the mixing cavity. The diesel exhaust purifying device further comprises N spray cavities, wherein the N is an integer larger than or equal to 1. When the N is larger than or equal to 2, the N spray cavities are connected in parallel through pipelines, partitions are arranged in the spray cavities, each spray cavity is divided into a liquid cavity and a gas cavity by one partition, a displacement mechanism is connected with the partitions, a liquid intake pipeline and a delivery pipeline are arranged in each liquid cavity, a ventilation pipeline communicated with atmosphere is arranged in each gas cavity, a first valve is arranged in each liquid intake pipeline, a liquid intake end of each liquid intake pipeline is arranged in the liquid storage tank, a second valve is arranged on each delivery pipeline, an output end of the each delivery pipeline is connected with the nozzle, and the first valves and the second valves are respectively connected with a control system. The diesel exhaust purifying device is simple in structure, low in cost and reliable in performance, the shortage that more toxic urea gas is emitted to the atmosphere is overcome, and safety and energy conservation are guaranteed.
Description
Technical field
The utility model relates to a kind of purification plant, and more particularly, the utility model relates to a kind of harmful purification of nitrogen oxides device of diesel engine vent gas that is used for.
Background technique
Along with development of times, the progress of society, people more and more pay attention to environmental problem.The toxic emission of various diesel engines is one of key factors that influence environment, is subjected to people's attention just day by day.Along with development of technology, the pattern that western developed countries such as European Union adopt " diaphragm pump+metering pump (valve) " or " electromagnetic pump+metering pump (valve) " one after another in outlet pipe jet atomization urea liquid implement catalytic reduction technology (SCR) and eliminate harmful nitrogen oxide, and formulate Europe IV standard, the discharging that exceeds standard of the harmful nitrogen oxide of restriction diesel vehicle.Because " diaphragm pump+metering pump (valve) " or " electromagnetic pump+metering pump (valve) " mode configuration complexity costs an arm and a leg, and because technical reason, reliability is relatively poor, hinders the implementation of Europe IV standard in China.
At this defective, Patent Office of the People's Republic of China's disclosed a CN101798946A patent application on 08 11st, 2010, name is called " a kind of diesel urea solution adding set and method ", and this device comprises: urea box, the N that links to each other with a urea box pressure chamber; Switch valve is realized control; The air that is positioned at the pressure chamber top imports and exports pipe; Be positioned at the three-way valve that air imports and exports the pipe top; Be positioned at the urea liquid delivery line of pressure chamber bottom, the other end of delivery line is connected in series urea liquid flow control device and urea liquid nozzle successively; Control unit links to each other with three-way valve, switch valve and urea liquid flow control device.This apparatus structure is simple, with low cost, good reliability, but because pressure chamber need have more supervirulent urea gas to airborne release when drawing urea liquid once more after using up urea liquid, this does not meet environmental protection requirement.Patent Office of the People's Republic of China disclosed a CN101818675A patent application on 09 01st, 2010 again for this reason, name is called " diesel-oil vehicle liquid storage tank pressurized urea solution metering injection system ", this system comprises liquid container, sparger, gas holder, first solenoid valve, second solenoid valve, Venturi tube, mixer and control gear, mixer comprises import and outlet relative with import and that be communicated with import, sparger is installed in the sidewall of mixer, gas holder by first solenoid valve respectively gas circuit connect second solenoid valve and liquid container, liquid container and sparger fluid connection, the second solenoid valve gas circuit connects Venturi tube, Venturi tube is communicated with the import gas circuit of mixer, control gear is electrically connected first solenoid valve, second solenoid valve and sparger, preferably, also comprise the one-level reduction valve, the second depressurized valve, liquid level sensor, first temperature transducer, safety control parts such as first pressure transducer.This system has overcome the defective that has more supervirulent urea gas to airborne release, but has produced new potential safety hazard and since this system be with whole liquid container as the jet pressure chamber, atomize urea solution, the interior pressure of liquid container must reach 5kgf/cm
2The liquid container inwall load of bearing is very big like this, if guarantee liquid container enough intensity is arranged, the liquid container inwall must be done thicklyer, and it is very heavy that whole liquid container seems, is unfavorable for energy-conservation, if do not increase wall thickness, liquid container just may be out of shape at any time, even blast, brings unnecessary potential safety hazard.
Summary of the invention
For overcoming above-mentioned defective, the utility model technical issues that need to address are: a kind of diesel engine exhaust gas purification device is provided, and both having overcome to airborne release has more supervirulent urea gas, has guaranteed Security and energy-conservation again.
The utility model solves the in-problem technological scheme of prior art: a kind of diesel engine exhaust gas purification device, comprise gas holder, liquid tank, mixing chamber and control system, be provided with first gas piping between gas holder and the mixing chamber, also be provided with nozzle on the mixing chamber, described diesel engine exhaust gas purification device comprises that also N is sprayed cavity, N is 〉=1 integer, and when N 〉=2, N is sprayed that pipeline is connected in parallel between the cavity; Spray in the cavity and be provided with slider, slider will spray cavity and be divided into liquid container and air chamber, slider is connected with displacement mechanism, liquid container is provided with liquid flowing tube road, liquid transport pipeline, and air chamber is provided with the gas pipeline that communicates with atmosphere, is provided with first valve body in the liquid flowing tube road, the liquid end of getting on liquid flowing tube road is positioned at liquid tank, liquid transport pipeline is provided with second valve body, and the output terminal and the nozzle of liquid transport pipeline link, and first valve body is connected with control system respectively with second valve body.Described first valve body and second valve body all are solenoid valve.Be provided with separately owing to spray cavity, it is small and exquisite that the injection cavity can be done according to actual needs, at same 5kgf/cm
2The load that the inwall of injection cavity bears under the pressure is less, the wall thickness that sprays cavity is thinner what guarantee can do relatively under the safe situation, and in the liquid tank owing to there is not pressure yet, the wall thickness of liquid tank can be thinner, and the energy-conservation and Security of diesel engine exhaust gas purification device can both be guaranteed like this; Because it is small and exquisite to spray cavity, the urea liquid that can store is limited, needs to attract deposit again after having sprayed the urea liquid of being deposited in actual use, and the short interruption phenomenon can appear in urea-spray when attracting deposit again.Avoid the generation of urea-spray disruption if desired, spray number of cavities and can be set to two or more, pipeline is connected in parallel between a plurality of injection cavitys, can control the valve body sequentially-operating of diesel engine exhaust gas purification device like this by control system, make that spraying cavity supplies urea liquid in turn, keeps the urea liquid free of discontinuities to spray; Owing to spray in the cavity and be provided with slider, slider will spray cavity and be divided into liquid container and air chamber, the air chamber that communicates with atmosphere is isolated with urea liquid all the time like this, and the liquid container that urea liquid is housed all the time with atmospheric isolation, make diesel engine exhaust gas purification device overcome to the poisonous urea gas of airborne release; Because slider is connected with displacement mechanism, the displacement of displacement mechanism generation makes the urea liquid in the liquid container produce the needed pressure of atomizing by the urea liquid in the slider squeezed fluid body cavity like this; Because the output terminal and the nozzle of liquid transport pipeline link, the urea liquid that has atomizing pressure like this in the liquid container carries out atomized spray by the liquid transport pipeline supply nozzle.
Described displacement mechanism is a cylinder piston mechanism, and the piston rod of cylinder piston mechanism is fixedlyed connected with slider.Because existing gas holder in the diesel engine exhaust gas purification device, adopt with the pressurized gas be the cylinder piston mechanism of power as displacement mechanism, make that it is simple in structure, with low cost, displacement reliably is conspicuous.
The cylinder of described cylinder piston mechanism is respectively equipped with second gas piping by two cavitys that piston is separated out, second gas piping communicates with first gas piping, second gas piping is provided with three-way valve, and one of them passage of three-way valve communicates with atmosphere, and three-way valve is connected with control system.Described three-way valve is a two-position three-way valve.Control system is by switching a cavity pressurization that makes cylinder in order to the two-position three-way valve break-make like this, and another cavity exhaust then makes a cavity exhaust again, another cavity pressurization, thus realize that same source of the gas can promote the purpose that piston is made shift reciprocately.
The cylinder two ends of described cylinder piston mechanism are respectively equipped with position-limit mechanism, and position-limit mechanism is connected with control system.Like this piston in cylinder to an end movement during to assigned position position-limit mechanism by control system piston is turned to, when piston in cylinder when the other end is moved to assigned position position-limit mechanism by control system piston is turned to once more, make that cylinder piston mechanism realizes accurately, displacement reliably.
Described position-limit mechanism is near switch.With near switch the induction of piston being realized the purpose that the piston location turns to, it is simple in structure, and is with low cost, accurate positioning, reliable.
Described liquid container is provided with the surging measuring mechanism, and the surging measuring mechanism is connected with control system.The surging measuring mechanism can be monitored the urea liquid pressure in the liquid container, control system can be regulated and control by the data that the surging measuring mechanism detects like this, its regulation that is stabilized in the urea liquid atomizing is required, urea liquid pressure in the liquid container neither can too highly cause each component of diesel engine exhaust gas purification device because of overburdening carrying premature damage, also can not cause the insufficient tail gas clean-up quality that influences of atomizing because of urea liquid pressure is low excessively.
Described surging measuring mechanism is a pressure transducer.Pressure transducer is a matured product, and is as the surging measuring mechanism, with low cost with pressure transducer, and the pressure monitoring result accurately, reliably.
The intersection of described first gas piping and second gas piping is provided with the voltage stabilizing cavity, the voltage stabilizing cavity communicates with first gas piping, second gas piping respectively, second gas piping is provided with the 3rd valve body at the port that links to each other with the voltage stabilizing cavity, and the 3rd valve body is connected with control system.Described the 3rd valve body is a solenoid valve.Because the intersection of first gas piping and second gas piping is provided with the voltage stabilizing cavity, the voltage stabilizing cavity communicates with first gas piping, second gas piping respectively, the voltage stabilizing cavity crest and the trough of the air pressure that also has certain pulsating nature that gas holder discharges of can pruning makes its pressure stable more to improve the tail gas clean-up quality like this; Because second gas piping is provided with solenoid valve at the port that links to each other with the voltage stabilizing cavity, solenoid valve is connected with control system, when diesel engine quits work like this, control system can be closed solenoid valve, make that air in the gas holder can pressure release and energy-conservation, the diesel engine igniting is handled tail gas when starting working immediately.
Described first gas piping is provided with the 4th valve body from gas holder between the voltage stabilizing cavity, to being provided with the 5th valve body, the 6th valve body and Venturi tube between the mixing chamber successively, the 5th valve body, the 6th valve body are connected with control system respectively described first gas piping from the voltage stabilizing cavity.Described the 4th valve body, the 5th valve body, the 6th valve body are respectively reduction valve, solenoid valve, throttle valve.Pressurized air in the described gas holder is provided by air pressure pump, in order to reduce air compression switch pump number of times, prolong the working life of air pressure pump, air pressure in the gas holder is necessary to be higher than the air pressure of actual demand, for this reason, first gas piping is provided with reduction valve from gas holder between the voltage stabilizing cavity, gas holder discharges to the voltage stabilizing cavity by this reduction valve that diesel engine exhaust gas purification device needs like this, and pressure has the pressurized air of less pulsating nature; Air energy pressurize when quitting work in the gas holder for diesel engine, the diesel engine igniting can be handled tail gas when starting working immediately, establishes solenoid valve at the voltage stabilizing cavity to first gas piping between the mixing chamber; For the voltage stabilizing cavity is complementary to the compressed air require of mixing chamber release and the urea liquid of atomizing, to first gas piping between the mixing chamber, establish throttle valve at the voltage stabilizing cavity; In order to improve the velocity of compressed air that the voltage stabilizing cavity discharges to mixing chamber, so that pressurized air fully mixes with the urea liquid of atomizing, establish Venturi tube at the voltage stabilizing cavity to first gas piping between the mixing chamber, the effect of Venturi tube is exactly that pressurized air to process quickens.
Described diesel engine exhaust gas purification device also comprises heating equipment, heating equipment comprises water heating pipe, electromagnetism heating pipe, the water heating pipe is arranged on the bottom in the liquid tank, and the electromagnetism heating pipe is arranged on getting outside the liquid end of the interior liquid flowing tube road of liquid tank, and the electromagnetism heating pipe is connected with control system.Because urea liquid can freeze when temperature is low, so in winter, Bei Fang winter particularly, diesel engine is in a period of time of just having started working, urea liquid condenses into piece makes diesel engine exhaust gas purification device can not implement the SCR technology, for this reason, diesel engine exhaust gas purification device need be provided with heating equipment, heating equipment comprises the water heating pipe, the electromagnetism heating pipe, the water heating pipe is arranged on the bottom in the liquid tank, the electromagnetism heating pipe is arranged on getting outside the liquid end of the interior liquid flowing tube road of liquid tank, the electromagnetism heating pipe utilizes the electric power heating, the water heating pipe is the hot water heating that utilizes engine-cooling system, diesel engine at first liquefies near the urea liquid that condenses the liquid end of getting on liquid flowing tube road with the electric power heating earlier, so that diesel engine exhaust gas purification device is implemented the SCR technology as early as possible in a period of time of just having started working like this, when the hot water of engine-cooling system makes the urea liquid liquefaction of condensing in the liquid tank, spray cavity get liquid no longer at need control system close the electromagnetism heating pipe with energy-conservation.
The beneficial effects of the utility model are: be provided with slider owing to spray in the cavity, the air chamber that communicates with atmosphere is isolated with urea liquid all the time, has overcome to the poisonous urea gas of airborne release; Because the injection cavity is provided with separately, make that spraying cavity can do small and exquisitely again, the load that the inwall of injection cavity bears is less, guarantees the energy-conservation and Security of diesel engine exhaust gas purification device; In addition also since the cylinder piston mechanism that to adopt with existing gas holder pressurized gas be power as displacement mechanism, adopt existing matured product near switch as position-limit mechanism, adopt existing matured product pressure transducer as the surging measuring mechanism, make that diesel engine exhaust gas purification device is simple in structure, with low cost, reliable performance.
Description of drawings
Fig. 1 is a kind of structural representation of the utility model.
Among the figure: 1: air pressure pump, 2: gas holder, 3: reduction valve, 4: the first gas pipings, 5: voltage stabilizing cavity, 6: the first solenoid valves, 7: throttle valve, 8: Venturi tube, 9: mixing chamber, 10: electromagnetism heating pipe, 11: spray cavity, 12: two-position three-way valve, 13: the second solenoid valves, 14: the second gas pipings, 15: cylinder piston mechanism, 16: nozzle, 17: gas pipeline, 18: outlet pipe, 19: liquid transport pipeline, 20: piston rod, 21: near switch, 22: the three solenoid valves, 23: water heating pipe, 24: air chamber, 25: slider, 26: liquid container, 27: pressure transducer, 28: the four solenoid valves, 29: piston, 30: liquid flowing tube road, 31: liquid tank, 32: cavity.
Embodiment
Also in conjunction with the accompanying drawings the utility model is further specified below by specific embodiment.
Embodiment: a kind of diesel engine exhaust gas purification device, as shown in Figure 1, comprise air pressure pump 1, gas holder 2, liquid tank 31, spray cavity 11, mixing chamber 9 and control system, control system is not shown in Fig. 1.In order to make gas holder 2 continue to obtain high-pressure air, gas holder 2 is connected with air pressure pump 1 usefulness pipeline.Be provided with first gas piping, 4, the first gas pipings 4 between gas holder 2 and the mixing chamber 9 and be provided with voltage stabilizing cavity 5, make diesel engine exhaust gas purification device can obtain the continual and steady pressurized air of pressure by voltage stabilizing cavity 5.First gas piping 4 is provided with reduction valve 3 from gas holder 2 between the voltage stabilizing cavity 5, so that pressure is up to 8kgf/cm
2Gas holder 2 be 5kgf/cm to rated pressure
2Voltage stabilizing cavity 5 carry pressurized air, first gas piping 4 is provided with first solenoid valve 6 successively between 9 from voltage stabilizing cavity 5 to mixing chamber, throttle valve 7 and Venturi tube 8, the effect of first solenoid valve 6 is to close first gas piping 4 when diesel engine quits work, so that the pressurize of gas holder 2 mesohigh air, the effect of throttle valve 7 is 4 li compressed-air actuated flows of control first gas piping, so that guaranteeing the needed flow of urea liquid of this flow and mixing chamber 9 abundant mixed aerosols is complementary, the effect of Venturi tube 8 is that the pressurized air to 4 li of first gas pipings quickens, so that the abundant mixing of atomize urea solution in the mixing chamber 9.Mixing chamber 9 is provided with nozzle 16, the effect of nozzle 16 is an atomize urea solution, nozzle 16 can be controlled the atomization quantity of urea liquid by the control injection frequency, is complementary to handle the needed quantity of tail gas fully in the atomization quantity of guaranteeing this urea liquid and the outlet pipe.Mixing chamber 9 is connected with outlet pipe 18 usefulness pipelines, so that the atomize urea solution mixed gas in the mixing chamber 9 sprays to implement the discharging of catalytic reduction technology cleaning of off-gas to outlet pipe 18.Continue to obtain urea liquid and save cost for outlet pipe 18 can have the gap, be provided with two in the diesel engine exhaust gas purification device and spray cavitys 11, so as two spray cavity 11 can be in turn to the outlet pipe solution of supplying urea.Spray cavity 11 and can be arranged in the liquid tank 31, also can be arranged on liquid tank 31 outsides spraying cavity 11.Be equipped with slider 25 in two injection cavitys 11, slider 25 will spray cavity 11 and be divided into liquid container 26 and air chamber 24.Slider 25 is fixedlyed connected with the piston rod 20 in the cylinder piston mechanism 15, slider 25 by with the interlock of piston rod 20, promote urea liquid in the liquid container 26 with specified 5kgf/cm
2Pressure flow is to nozzle 16; Simultaneously slider 25 comes urea liquid and atmospheric isolation in spraying cavity 11 and guarantee that urea liquid can not spread in atmosphere.Cylinder piston mechanism 15 quantity also are two.Be respectively equipped with liquid flowing tube road 30, liquid transport pipeline 19, pressure transducer 27 on two liquid container 26, the effect of pressure transducer 27 is to provide actual pressure in the liquid container 26 to control system, so that control system, is guaranteed the actual pressure in the liquid container 26 by the action that the Push And Release of second solenoid valve 13 comes control cylinder piston mechanism 15 and is stabilized in specified 5kgf/cm
2On, remain atmospheric pressure in order to ensure the pressure in the air chamber 24, be respectively equipped with the gas pipeline 17 that communicates with atmosphere on two air chamber 24.The effect that is respectively equipped with the 4th solenoid valve 28, the four solenoid valves 28 in two liquid flowing tube roads 30 is to control opening and closing of liquid flowing tube road 30 by control system, opens when liquid container 26 is got liquid, closes during liquid container 26 discharge opeings.The liquid end of getting on two liquid flowing tube roads 30 all is positioned at liquid tank 31.The second half section of two liquid transport pipelines 19 is shared, be equipped with the 3rd solenoid valve 22 on preceding half section of two liquid transport pipelines 19, the effect of the 3rd solenoid valve 22 also is preceding half section the opening and closing of controlling liquid transport pipeline 19 by control system, when getting liquid, liquid container 26 closes, open during liquid container 26 discharge opeings, output terminal and the nozzle 16 of 19 second half sections of liquid transport pipeline link.Two cavitys 32 that the cylinder of cylinder piston mechanism 15 is separated out by piston 29, two cylinder piston mechanisms 15 have four cavitys 32, each cavity 32 is equipped with second gas piping 14, article four, second gas piping 14 all communicates with voltage stabilizing cavity 5, for cylinder piston mechanism 15 can promote slider 25 actions in turn by the control of control system, one section of every second gas piping 14 close cavitys 32 is equipped with two-position three-way valve 12, one of them passage of two-position three-way valve 12 communicates with atmosphere, article four, second gas piping 14 is shared near a section of voltage stabilizing cavitys 5, in the middle of second gas piping 14 on two cavitys of same cylinder piston mechanism 15 one section shared, article four, second gas piping 14 is provided with second solenoid valve 13 near the pipeline of voltage stabilizing cavity 5 common sparings, first effect of second solenoid valve 13 is the action that comes control cylinder piston mechanism 15 by control system, guarantees that the actual pressure in the liquid container 26 is stabilized in specified 5kgf/cm
2On; Second effect of second solenoid valve 13 is to close second gas piping 14 when diesel engine quits work, so that the pressurize of gas holder 2 mesohigh air.The cylinder two ends of two cylinder piston mechanisms 15 are equipped with near switch 21, are to provide piston 29 in the cylinder piston mechanism 15 to arrive the information of assigned positions to control system near the effect of switch 21.In order to guarantee that in the season of cold the urea liquid in the liquid tank 31 is liquid state, the bottom in liquid tank 31 is provided with water heating pipe 23, and water heating pipe 23 water pipes are connected in the diesel engine cooling system, so that the heat that utilizes motor to come out.The liquid tank 31 inherent outsides of getting the liquid end near two liquid flowing tube roads 30 are provided with electromagnetism heating pipe 10 respectively, so that cold season diesel engine just start working, when the effect of water heating pipe 23 does not also manifest the urea liquid that condenses is not heated, guarantee the needs of vent gas treatment when diesel engine has just been started working.First solenoid valve 6, throttle valve 7, electromagnetism heating pipe 10, two-position three-way valve 12, second solenoid valve 13, nozzle 16, be connected with control system respectively near switch 21, the 3rd solenoid valve 22, pressure transducer 27, the 4th solenoid valve 28, electromagnetism heating pipe 10.
The working principle of diesel engine exhaust gas purification device described in the utility model: air pressure pump 1 continues to provide source of the gas for gas holder 2, and the compressed air pressure that stores in the gas holder 2 is 8kgf/cm
2The pressurized air that stores in the gas holder 2 is 5kgf/cm by reduction valve 3 to voltage stabilizing cavity 5 delivery pressures
2Pressurized air, after 5 voltage stabilizings of voltage stabilizing cavity, divide two-way output; The first via is controlled to through throttle valve 7 and enters mixing chamber 9 after the coupling flow quickens by Venturi tube 8; The second tunnel four two-position three-way valve 12 sequentially-operatings by control system control promote two pistons 29 action in turn, because slider 25 is fixed together by piston rod 20 and piston 29, slider 25 in the injection cavity 11 is along with moving of piston 29 also made corresponding displacement, when slider 25 when air chamber 24 directions move, the 4th solenoid valve 28 is opened, the 3rd closed electromagnetic valve, liquid container 26 produces negative pressure, the urea liquid that liquid container 26 is drawn in the liquid tank 31 by liquid flowing tube road 30; When slider 25 when liquid container 26 directions move, at first the 4th solenoid valve 28 cuts out, the urea liquids in the liquid container 26 are compressed, when urea liquid boosts to 5kgf/cm
2The time, the 3rd solenoid valve 22 is opened, and urea liquid flows to nozzle 16 along liquid transport pipeline 19.Because two are sprayed cavity 11 and do gapless working by turns under the controls of control system, make nozzle 16 continue to obtain the urea liquid of rated pressure.Control system enters mixing chamber 9 with urea liquid with the solution amount atomized spray that mates by the injection frequency of control nozzle 16, the urea liquid of atomizing enters mixing chamber 9 back fully to be mixed with pressurized air under the impact from the high velocity air of the first via, and under the drive of the high velocity air of the first via, enter in the outlet pipe 8, the harmful nitrogen oxide generation selective catalytic reduction reaction of process generates harmless nitrogen G﹠W and discharges in atomize urea solution in the outlet pipe 8 and the outlet pipe 8.
Need to prove in addition: two-position three-way valve 12 also can make up the function of finishing two-position three-way valve 12 with two unidirectional electrical magnet valves.
Above-described embodiment is a kind of preferred version of the present utility model, is not the utility model is done any pro forma restriction, also has other variant and remodeling under the prerequisite that does not exceed the technological scheme that claim puts down in writing.
The content that is not described in detail in this specification belongs to the those skilled in the art known prior art.
Claims (10)
1. diesel engine exhaust gas purification device, comprise gas holder, liquid tank, mixing chamber and control system, be provided with first gas piping between gas holder and the mixing chamber, also be provided with nozzle on the mixing chamber, it is characterized in that: described diesel engine exhaust gas purification device comprises that also N is sprayed cavity, N is 〉=1 integer, and when N 〉=2, N is sprayed that pipeline is connected in parallel between the cavity; Spray in the cavity and be provided with slider, slider will spray cavity and be divided into liquid container and air chamber, slider is connected with displacement mechanism, liquid container is provided with liquid flowing tube road, liquid transport pipeline, and air chamber is provided with the gas pipeline that communicates with atmosphere, is provided with first valve body in the liquid flowing tube road, the liquid end of getting on liquid flowing tube road is positioned at liquid tank, liquid transport pipeline is provided with second valve body, and the output terminal and the nozzle of liquid transport pipeline link, and first valve body is connected with control system respectively with second valve body.
2. diesel engine exhaust gas purification device according to claim 1 is characterized in that: described displacement mechanism is a cylinder piston mechanism, and the piston rod of cylinder piston mechanism is fixedlyed connected with slider.
3. diesel engine exhaust gas purification device according to claim 2, it is characterized in that: the cylinder of described cylinder piston mechanism is respectively equipped with second gas piping by two cavitys that piston is separated out, second gas piping communicates with first gas piping, second gas piping is provided with three-way valve, one of them passage of three-way valve communicates with atmosphere, and three-way valve is connected with control system.
4. according to claim 2 or 3 described diesel engine exhaust gas purification devices, it is characterized in that: the cylinder two ends of described cylinder piston mechanism are respectively equipped with position-limit mechanism, and position-limit mechanism is connected with control system.
5. diesel engine exhaust gas purification device according to claim 4 is characterized in that: described position-limit mechanism is near switch.
6. according to claim 1 or 2 or 3 described diesel engine exhaust gas purification devices, it is characterized in that: described liquid container is provided with the surging measuring mechanism, and the surging measuring mechanism is connected with control system.
7. diesel engine exhaust gas purification device according to claim 6 is characterized in that: described surging measuring mechanism is a pressure transducer.
8. diesel engine exhaust gas purification device according to claim 3, it is characterized in that: the intersection of described first gas piping and second gas piping is provided with the voltage stabilizing cavity, the voltage stabilizing cavity communicates with first gas piping, second gas piping respectively, second gas piping is provided with the 3rd valve body at the port that links to each other with the voltage stabilizing cavity, and the 3rd valve body is connected with control system.
9. according to claim 1 or 2 or 3 or 8 described diesel engine exhaust gas purification devices, it is characterized in that: described first gas piping is provided with the 4th valve body from gas holder between the voltage stabilizing cavity, to being provided with the 5th valve body, the 6th valve body and Venturi tube between the mixing chamber successively, the 5th valve body, the 6th valve body are connected with control system respectively described first gas piping from the voltage stabilizing cavity.
10. diesel engine exhaust gas purification device according to claim 1, it is characterized in that: described diesel engine exhaust gas purification device also comprises heating equipment, heating equipment comprises water heating pipe, electromagnetism heating pipe, the water heating pipe is arranged on the bottom in the liquid tank, the electromagnetism heating pipe is arranged on getting outside the liquid end of the interior liquid flowing tube road of liquid tank, and the electromagnetism heating pipe is connected with control system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201447033U CN202047882U (en) | 2011-05-09 | 2011-05-09 | Diesel exhaust purifying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201447033U CN202047882U (en) | 2011-05-09 | 2011-05-09 | Diesel exhaust purifying device |
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| CN202047882U true CN202047882U (en) | 2011-11-23 |
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| CN2011201447033U Expired - Lifetime CN202047882U (en) | 2011-05-09 | 2011-05-09 | Diesel exhaust purifying device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102182534A (en) * | 2011-05-09 | 2011-09-14 | 徐君波 | Tail gas purification device for diesel engine |
| CN108731120A (en) * | 2018-06-20 | 2018-11-02 | 南京海洛阿姆生物科技有限公司 | A kind of air pollution treatment purifier |
-
2011
- 2011-05-09 CN CN2011201447033U patent/CN202047882U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102182534A (en) * | 2011-05-09 | 2011-09-14 | 徐君波 | Tail gas purification device for diesel engine |
| CN102182534B (en) * | 2011-05-09 | 2012-12-12 | 徐君波 | Tail gas purification device for diesel engine |
| CN108731120A (en) * | 2018-06-20 | 2018-11-02 | 南京海洛阿姆生物科技有限公司 | A kind of air pollution treatment purifier |
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