CN103321728A - Urea pump for treating tail gas of diesel engine - Google Patents
Urea pump for treating tail gas of diesel engine Download PDFInfo
- Publication number
- CN103321728A CN103321728A CN2012100782048A CN201210078204A CN103321728A CN 103321728 A CN103321728 A CN 103321728A CN 2012100782048 A CN2012100782048 A CN 2012100782048A CN 201210078204 A CN201210078204 A CN 201210078204A CN 103321728 A CN103321728 A CN 103321728A
- Authority
- CN
- China
- Prior art keywords
- pump
- urea
- bearing
- urea pump
- motor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 title claims abstract description 51
- 239000004202 carbamide Substances 0.000 title claims abstract description 51
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000007789 sealing Methods 0.000 claims description 2
- 239000012528 membrane Substances 0.000 abstract 4
- 238000000034 method Methods 0.000 description 4
- 239000007921 spray Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000033001 locomotion Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000009183 running Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Images
Classifications
-
- 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
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Landscapes
- Exhaust Gas After Treatment (AREA)
Abstract
The invention relates to the technical field of diesel engines, in particular to a urea pump for treating tail gas of a diesel engine. The urea pump mainly comprises a motor, an eccentric wheel, a connecting rod, a bearing, a membrane, a pump body, a valve seat, a valve deck, valve plates, a rear cover, a rear cover bearing and a set screw, wherein an output shaft of the motor is fixedly connected with the eccentric wheel, an excircle of the eccentric wheel is connected with an inner ring of the bearing, an excircle of the bearing is connected with the connecting rod, and the connecting rod is fixedly connected with the membrane, so that a reciprocating mechanism is formed; the front end of the motor is fixedly connected with the pump body, the bearing is arranged at the rear end of the pump body, and the rear cover of the pump is fixed on the pump body; screw holes for fixing the membrane and a pump cover are formed in the upper end of the pump body; and the valve seat provided with an arc pump cavity is assembled on the membrane, and a rectangular valve block used for controlling water to flow in and out is arranged in the valve seat. The urea pump has the advantages of simple structure, small size, low cost, flexibility in flow control, convenience in use and the like, and doesn't require to be lubricated during operation.
Description
Technical field
The present invention relates to the diesel engine technologies field, particularly tail gas processing system of diesel engine provides the urea pump of quantitative urea-spray.
Background technique
Existing diesel engine self-technique improves and can't reach the vent gas treatment emission standard of rules and regulations, therefore must increase in addition a cover system, urea and tail gas is fully reacted, to reach the emission standard that meets rules; In the outlet pipe transducer, spray urea because the urea discharging needs high pressure, a quantitative power source, and global technology can't reach this requirement at present, affects the development of diesel car industry.
Summary of the invention
The objective of the invention is: invent a kind of diesel motor exhaust and process urea pump, can reach the purpose that high pressure, quantitative injection urea are provided to tail gas processing system of diesel engine, its shape is small and exquisite, simple in structure, need not to lubricate, easy for installation, long service life, control is simple, and is applicable to the urea pump of various tail gas processing system of diesel engines.
To achieve these goals, the technical solution adopted in the present invention is:
The tail gas processing system of diesel engine urea pump comprises engine control module, and engine control module is electrically connected with electric machine controller by the pwm signal guide line, and electric machine controller is electrically connected with urea pump; Utilize the pwm signal of motor car engine ECM, by the motor controller controls motor speed, control the flow of urea pump.
Described urea pump comprises by motor, eccentric wheel, connecting rod and bearing, diaphragm, the pump housing, valve seat, valve gap, valve block, bonnet and bonnet bearing and retaining screw, described motor output shaft is fixedly connected with eccentric wheel, described eccentric wheel cylindrical is connected with bearing inner race, bearing top circle is connected with connecting rod, connecting rod is fixedly connected with diaphragm, form reciprocating mechanism, the front end of motor is fixedly connected with the pump housing, the rear end of the pump housing is provided with bearing, pump postoperculum is fixed on the pump housing, be provided with the fixedly screw hole of diaphragm and pump cover in the upper end of the pump housing, be equiped with the valve seat of arc pump chamber on the diaphragm, be provided with the rectangular valve block for the control water inlet and outlet in the described valve seat, described valve seat is provided with valve gap, corresponding valve seat is put the valve block place and is provided with rectangular slot on the valve gap, is provided with water intake and water outlet two holes that urea is flowed in the pump head of sealing in the rectangular slot.
The valve seat assembly that urea pump is provided with.
The connecting rod ASSY that urea pump is provided with.
Valve block is the valve block that the intake-outlet valve block is integrated.
Urea pump is provided with the anti-leak passage, prevents that urea is leaked to the pump outside.
Advantage of the present invention and beneficial effect: by the motor driving eccentric wheel, and the connecting rod that drive is contained on the eccentric wheel upper bearing (metal) moves reciprocatingly in the pump housing, and then the band dynamic diaphragm moves reciprocatingly in the valve seat arc-shaped cavity, urea is flowed into by the water intake on the valve gap, spray by water outlet again, rotating speed by the control motor can satisfy different emitted doses, and motor speed is controlled by pwm signal.The present invention has simple in structure, need not to lubricate when operation, and volume is little, and flow control is flexible, and is easy to use, low cost and other advantages.
Description of drawings
Fig. 1 is general assembly perspective view of the present invention;
Fig. 2 is the D-D sectional structure schematic diagram of Fig. 3;
Fig. 3 is the A-A sectional structure schematic diagram of Fig. 2;
In the drawings,
1, motor 2, connecting rod 3, eccentric wheel 4, eccentric wheel retaining screw 5, connecting rod bearing 6, diaphragm 7, valve gap 8, little o type circle 9, valve seat 10, valve block 11, bonnet 12, bonnet bearing 13, pump housing retaining screw 14, pump head retaining screw 15, bonnet retaining screw 16, the pump housing 17, large O type circle.
Embodiment
In conjunction with Fig. 1-3, for a kind of diesel motor exhaust is processed the urea pump structural representation, the tail gas processing system of diesel engine urea pump, comprise engine control module ECM (Engine ControlModule), engine control module is electrically connected with electric machine controller by the pwm signal guide line, and electric machine controller is electrically connected with urea pump; Utilize PWM (pulse duration modulation) signal of motor car engine ECM, by the motor controller controls motor speed, control the flow of urea pump.
In the drawings, described motor 1 drives eccentric wheel 3 by motor output shaft and is contained in connecting rod bearing 5 runnings on the eccentric wheel 3, the connecting rod 2 that utilizes the offset of eccentric wheel 3 to make to be contained on connecting rod bearing 8 cylindricals drives to do in the arc-shaped cavity of diaphragm 6 between the upper-end surface of the pump housing 16 and the valve seat on it 9 that is contained on the connecting rod 2 and pumps, in the process of connecting rod 2 operation downwards, the water intake of urea by valve gap 7 flows into and is contained in valve block 10 places on the valve seat 9, and back down valve block 10.1 positions, flow in the arc-shaped cavity of diaphragm 6 motions, this moment, connecting rod moved upward, the urea that flows into is upwards pushed up, valve block 10.1 positions are held out against can't flow out, and valve block 10.2 positions are backed down, flow of urea to the valve gap 7 water outlet and go out.Go round and begin again, make the urea continuous injection.
Described diaphragm 6 is to utilize rubber to be basic unit, with surface that urea contacts on compound one deck tetrafluoro rubber.Make the longer service life of urea pump, and improve the outlet pressure of urea pump.
Described motor 1 adopts brshless DC motor, utilizes the rotating speed of pwm signal control motor 1, and the flow of urea pump water outlet is changed, and adapts to the urea injecting quantity of diesel engine under the different rotating speeds operating mode.
Described urea pump is established a pump postoperculum bearing 12 in bonnet 11 is, make the urea pump operation more steady.
Claims (6)
1. diesel motor exhaust is processed urea pump, it is characterized in that: comprise engine control module, engine control module is electrically connected with electric machine controller by the pwm signal guide line, and electric machine controller is electrically connected with urea pump; Utilize the pwm signal of motor car engine ECM, by the motor controller controls motor speed, control the flow of urea pump.
2. diesel motor exhaust according to claim 1 is processed urea pump, it is characterized in that: described urea pump comprises by motor, eccentric wheel, connecting rod and bearing, diaphragm, the pump housing, valve seat, valve gap, valve block, bonnet and bonnet bearing and retaining screw, described motor output shaft is fixedly connected with eccentric wheel, described eccentric wheel cylindrical is connected with bearing inner race, bearing top circle is connected with connecting rod, connecting rod is fixedly connected with diaphragm, form reciprocating mechanism, the front end of motor is fixedly connected with the pump housing, the rear end of the pump housing is provided with bearing, pump postoperculum is fixed on the pump housing, be provided with the fixedly screw hole of diaphragm and pump cover in the upper end of the pump housing, be equiped with the valve seat of arc pump chamber on the diaphragm, be provided with the rectangular valve block for the control water inlet and outlet in the described valve seat, described valve seat is provided with valve gap, and corresponding valve seat is put the valve block place and is provided with rectangular slot on the valve gap, is provided with water intake and water outlet two holes that urea is flowed in the pump head of sealing in the rectangular slot.
3. diesel motor exhaust according to claim 2 is processed urea pump, it is characterized in that: the valve seat assembly that urea pump is provided with.
4. diesel motor exhaust according to claim 2 is processed urea pump, it is characterized in that: the connecting rod ASSY that urea pump is provided with.
5. diesel motor exhaust according to claim 2 is processed urea pump, and it is characterized in that: valve block is the valve block that the intake-outlet valve block is integrated.
6. diesel motor exhaust according to claim 2 is processed urea pump, and it is characterized in that: urea pump is provided with the anti-leak passage, prevents that urea is leaked to the pump outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210078204.8A CN103321728B (en) | 2012-03-22 | 2012-03-22 | Urea pump for treating tail gas of diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210078204.8A CN103321728B (en) | 2012-03-22 | 2012-03-22 | Urea pump for treating tail gas of diesel engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103321728A true CN103321728A (en) | 2013-09-25 |
| CN103321728B CN103321728B (en) | 2015-04-15 |
Family
ID=49190723
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210078204.8A Expired - Fee Related CN103321728B (en) | 2012-03-22 | 2012-03-22 | Urea pump for treating tail gas of diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103321728B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109372761A (en) * | 2018-10-30 | 2019-02-22 | 杭州富阳锦丰纸业有限公司 | A kind of urea dispenser pump used on diesel vehicle |
| CN109458347A (en) * | 2018-10-30 | 2019-03-12 | 杭州富阳锦丰纸业有限公司 | A kind of urea dispenser pump |
| CN113482750A (en) * | 2021-08-04 | 2021-10-08 | 无锡威孚力达催化净化器有限责任公司 | Urea supply injection system with double-stage injection function |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101660443A (en) * | 2008-05-28 | 2010-03-03 | 中国第一汽车集团公司 | Vehicle-mounted SCR metering and ejecting system taking exhaust gas temperature as variable |
| CN101876265A (en) * | 2009-04-28 | 2010-11-03 | 株式会社电装 | The waste gas cleaning system of explosive motor |
| CN101963084A (en) * | 2010-10-29 | 2011-02-02 | 上海交通大学 | Selective catalytic reduction urea air premixing jet system |
| CN102032029A (en) * | 2009-09-30 | 2011-04-27 | 中国第一汽车集团公司 | Urea solution supplying and spraying system |
| CN201835899U (en) * | 2010-03-13 | 2011-05-18 | 中国第一汽车集团公司 | Pump power driven air-assist atomized urea reducing agent spray and control system |
| CN202673417U (en) * | 2012-03-22 | 2013-01-16 | 浙江卡韦德新能源科技有限公司 | Tail gas processing urine pump for diesel engine |
-
2012
- 2012-03-22 CN CN201210078204.8A patent/CN103321728B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101660443A (en) * | 2008-05-28 | 2010-03-03 | 中国第一汽车集团公司 | Vehicle-mounted SCR metering and ejecting system taking exhaust gas temperature as variable |
| CN101876265A (en) * | 2009-04-28 | 2010-11-03 | 株式会社电装 | The waste gas cleaning system of explosive motor |
| CN102032029A (en) * | 2009-09-30 | 2011-04-27 | 中国第一汽车集团公司 | Urea solution supplying and spraying system |
| CN201835899U (en) * | 2010-03-13 | 2011-05-18 | 中国第一汽车集团公司 | Pump power driven air-assist atomized urea reducing agent spray and control system |
| CN101963084A (en) * | 2010-10-29 | 2011-02-02 | 上海交通大学 | Selective catalytic reduction urea air premixing jet system |
| CN202673417U (en) * | 2012-03-22 | 2013-01-16 | 浙江卡韦德新能源科技有限公司 | Tail gas processing urine pump for diesel engine |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109372761A (en) * | 2018-10-30 | 2019-02-22 | 杭州富阳锦丰纸业有限公司 | A kind of urea dispenser pump used on diesel vehicle |
| CN109458347A (en) * | 2018-10-30 | 2019-03-12 | 杭州富阳锦丰纸业有限公司 | A kind of urea dispenser pump |
| CN113482750A (en) * | 2021-08-04 | 2021-10-08 | 无锡威孚力达催化净化器有限责任公司 | Urea supply injection system with double-stage injection function |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103321728B (en) | 2015-04-15 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150415 |