CN106224213A - A kind of exhaust gas from diesel vehicle post processing SCR system adds blue pump diaphragm sheet and seals structure - Google Patents
A kind of exhaust gas from diesel vehicle post processing SCR system adds blue pump diaphragm sheet and seals structure Download PDFInfo
- Publication number
- CN106224213A CN106224213A CN201610864625.1A CN201610864625A CN106224213A CN 106224213 A CN106224213 A CN 106224213A CN 201610864625 A CN201610864625 A CN 201610864625A CN 106224213 A CN106224213 A CN 106224213A
- Authority
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- China
- Prior art keywords
- diaphragm
- pump
- pump head
- exhaust gas
- diesel vehicle
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- 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.)
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Links
- 238000012805 post-processing Methods 0.000 title claims abstract description 24
- 238000007789 sealing Methods 0.000 claims abstract description 28
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 8
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 8
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 230000008859 change Effects 0.000 abstract description 3
- 150000001875 compounds Chemical class 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 21
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 11
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 6
- 239000004202 carbamide Substances 0.000 description 4
- 235000013877 carbamide Nutrition 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 230000035882 stress Effects 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 125000004122 cyclic group Chemical group 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 238000010531 catalytic reduction reaction Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 241001062009 Indigofera Species 0.000 description 1
- 206010039203 Road traffic accident Diseases 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- -1 blue pump Substances 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 230000026676 system process Effects 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
- F01N3/28—Construction of catalytic reactors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/14—Arrangements for the supply of substances, e.g. conduits
- F01N2610/1433—Pumps
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Combustion & Propulsion (AREA)
- Reciprocating Pumps (AREA)
Abstract
The present invention relates to a kind of exhaust gas from diesel vehicle post processing SCR system add blue pump diaphragm sheet and seal structure.It is characterized in that described diaphragm is one-body molded by PTFE, diaphragm arranges multiple concavo-convex wave structure, described pump head arranges an O groove with the wave concave surface of edge of diaphragm, arranging the preposition O of diaphragm in O groove, diaphragm is arranged on the preposition O of diaphragm and is connected between seat with pump head.The present invention has overturned SCR system and has added blue pump diaphragm sheet and traditional sealing means, original compound diaphragm is substituted with pure tetrafluoro diaphragm, use wave structure, make diaphragm service life geometry times increase, reach more than 15 years, almost with heavy-duty diesel vehicle same life, the consumable accessory of diaphragm is become conventional part, it is not necessary to carry out guarantee and change；The most also the SCR that solves put things right once and for all adds blue pump hydraulic end leakage problem, is greatly reduced use and the maintenance cost of user.
Description
Technical field
The invention belongs to dosing pump field, be specifically related to a kind of exhaust gas from diesel vehicle post processing SCR system and add blue pump diaphragm sheet
And sealing structure.
Background technology
Along with people's concern to environmental problem, Abgasgesetz increasingly stringent, emission of diesel engine is controlled the research of technology
Significant.In Europe, " optimize burning+SCR (Selective Catalytic Reduction, letter
Claim SCR) " the advantages such as emission control technique is good with its fuel economy, sulfur poisoning resistance is strong, it has also become diesel vehicle meets Europe
The mainstream technology route of IV Euro V emissions.In China, along with the propelling of IV state of state V Abgasgesetz, SCR technology the most becomes
A big focus for domestic engine emission technical research.Its basic functional principle is through optimizing Diesel engine cylinder internal combustion
Burning process, makes the emissions such as the carbon monoxide in burning waste gas (CO), Hydrocarbon (HC) and granule (PM) effectively be controlled
Make and reach the requirement of regulation, finally electromotor is discharged the nitrogen oxides (NOX) that in tail gas, content is higher and recycle special
Vehicle-mounted after-treatment system processes, to meet laws and regulations requirement.In last handling process, dosing unit can be according to electromotor
The urea amount matched with engine operation condition being sprayed into exhaustor, carbamide decomposites the instruction accurate that ECU is given
Ammonia and nitrogen oxides in catalyst converter, ultimately produce harmless nitrogen (N2) and water (H2O) through catalytic reduction reaction.According to survey
Fixed, SCR exhaust gas aftertreatment system generally reaches more than 60% to the conversion ratio of nitrogen oxides.Exhaust gas from diesel vehicle after-treatment system
The compositions such as blue pump, catalyst converter, urea box, nozzle, sensor, compressed air cylinder, air filter are mainly added by SCR.SCR adds blue pump
The core cell of exhaust gas from diesel vehicle after-treatment system, is also a high precision components.And SCR to add blue pump diaphragm sheet be that SCR adds indigo plant
One of main parts size of pump, its life-span directly limits the life-span of a whole set of exhaust gas from diesel vehicle after-treatment system.
SCR system adds blue pump and utilizes diaphragm to replace plunger, realizes moving back and forth under drive mechanism effect, completes to inhale
Enter, discharge process.SCR system adds blue pump due to the buffer action of barrier film, is structurally truly realized measured fluid and drives
Isolation between motivation structure.Diaphragm is crimped by tetrafluoro layer, canvas filler rubber layer and glue and forms in the market, folder cloth rubber simultaneously
Glue-line wraps up an iron core piece.Such as Bosch, all use this type of diaphragm according to well-known producers such as meter Tai Ke.Above-mentioned diaphragm not only technique is multiple
Miscellaneous, the life-span is typically at about 5000 hours simultaneously.Because it is compound, add blue pump at the severe ring of urea solution at SCR
In the case of border altofrequency 24 continuous throughout the twenty-four hour24, it is easy to fatigue rupture, degumming is the modal phenomenon of this type of diaphragm, the most just
It is to rupture.SCR system adds blue pump and all uses by pump head and pump head connection seat edge compression sealing means, and pump head becomes one
Airtight cavity, is the most back and forth made by plunger the deformation of diaphragm flexing agitate back and forth, opens and closes in conjunction with importing and exporting check valve
Realize inhaling night and the cyclic process of discharge opeing.Therefore diaphragm is that SCR system adds blue one weak link the most fatal of pump, every
A period of time must be changed, and whether exhaust gas from diesel vehicle after-treatment system can directly affect the use of diesel vehicle by work well,
This will result in traffic accident and diesel vehicle such as recalls at the loss greatly, also affect China's French V, VI regulation of exhaust gas from diesel vehicle discharge simultaneously
Whether can implement smoothly.In sum: in the urgent need to a extra long life diaphragm on market.
Summary of the invention
For problems of the prior art, it is an object of the invention to provide a kind of exhaust gas from diesel vehicle post processing SCR
System adds blue pump diaphragm sheet and seals the technical scheme of structure.
Described a kind of exhaust gas from diesel vehicle post processing SCR system adds blue pump diaphragm sheet, it is characterised in that described diaphragm by
PTFE is one-body molded, and diaphragm arranges multiple concavo-convex wave structure.
Described a kind of exhaust gas from diesel vehicle post processing SCR system adds blue pump diaphragm sheet, it is characterised in that described diaphragm
A diameter of 25-45 millimeter.
Described a kind of exhaust gas from diesel vehicle post processing SCR system adds blue pump diaphragm sheet sealing structure, including pump head, pump head even
Joint chair and diaphragm, diaphragm is arranged on pump head and is connected between seat with pump head, and pump head is connected seat with pump head and is bolted, its
Being characterised by that described diaphragm is one-body molded by PTFE, diaphragm arranges multiple concavo-convex wave structure, described pump head with every
The wave concave surface of edge of diaphragm arranges an O groove, arranges the preposition O of diaphragm in O groove, and diaphragm is arranged on
The preposition O of diaphragm is connected between seat with pump head.
Described a kind of exhaust gas from diesel vehicle post processing SCR system adds blue pump diaphragm sheet sealing structure, it is characterised in that described
Pump head is connected seat and is equipped with 4 screw holes with pump head, connects seat by 4 fixed screws through pump head and pump head and is spirally connected with support
Make diaphragm preposition O deformation compress diaphragm formed wave soft sealing structure, diaphragm pump chamber is separated into one airtight
Cavity volume.
Described a kind of exhaust gas from diesel vehicle post processing SCR system adds blue pump diaphragm sheet sealing structure, it is characterised in that described O
The diameter of type ring recess is identical with the diameter of the wave concave surface of corresponding diaphragm outermost edges.
Described a kind of exhaust gas from diesel vehicle post processing SCR system adds blue pump diaphragm sheet sealing structure, it is characterised in that described
A diameter of 25-45 millimeter of diaphragm.
Described a kind of exhaust gas from diesel vehicle post processing SCR system adds blue pump diaphragm sheet sealing structure, it is characterised in that described
The diameter of the preposition O of diaphragm matches with the diameter of O groove.
Described a kind of exhaust gas from diesel vehicle post processing SCR system adds blue pump diaphragm sheet sealing structure, it is characterised in that described O
Type ring recess can also be arranged on the pump housing and connect on seat.
Described a kind of exhaust gas from diesel vehicle post processing SCR system adds blue pump diaphragm sheet sealing structure, it is characterised in that described O
Type ring recess can also be simultaneously located at pump head and the pump housing connects on seat.
The invention provides a kind of high-quality, high performance-price ratio, extra long life add blue pump wave diaphragm, it is by pure
The compacting of solid tetrafluoro sheet material, sintering, turning are made, can be compatible with almost all of chemicals；There is provided a kind of latest model the most simultaneously
Effectively sealing structure, wave soft seal, it supports the use with this diaphragm.
In the present invention, SCR system adds blue pump the most back and forth makes diaphragm produce axially-movable by plunger, and axially-movable makes
Diaphragm flexing is agitated back and forth, realizes inhaling night and the cyclic process of discharge opeing in conjunction with importing and exporting check valve opening and closing；Every
Diaphragm, when inhaling liquid condition, is in free state；When going out liquid status, diaphragm reaches top, owing to individual diaphragm is arranged
The existence of many waves, the stress of diaphragm is decomposed by multiple waves, thus avoids the concentration of stress point so that
The increase of the life-span geometry of diaphragm times.The present invention makes traditional diaphragm rigidity compression sealing into flexible membrane preposition O simultaneously
The soft sealing of type circle wave, is greatly reduced the probability that pump head is revealed, and that puts things right once and for all solves pump head leakage problem.
Accompanying drawing explanation
Fig. 1 is diaphragm sectional structure chart of the present invention；
Fig. 2 is a kind of sectional structure chart sealing constructive embodiment of the present invention；
In figure: 1-diaphragm, 2-pump head, 3-pump head connects seat, the preposition O of 4-diaphragm.
Detailed description of the invention
Below in conjunction with Figure of description, the invention will be further described:
Tradition electromagnetic dosing pump diaphragm is formed by the splicing of mould glue by rubber layer, tetrafluoro layer, iron core.Owing to it is to use
Different materials (rubber layer and tetrafluoro layer) splicing forms, at the easy aging oxidation degumming of alkaline environment, rubber layer and tetrafluoro layer, ferrum
Core and the most as easy as rolling off a log degumming of rubber layer.The most traditional SCR system adds blue pump diaphragm sheet and all uses by pump head and pump head connection seat
Edge compresses sealing means, and pump head becomes an airtight cavity, is the most back and forth made the deformation of diaphragm flexing rouse back and forth by plunger
Dynamic, realize inhaling night and the cyclic process of discharge opeing in conjunction with importing and exporting check valve opening and closing.The most such sealing means
Easily cause the some fatigue rupture of diaphragm flexing.The most traditional diaphragm is the weak ring that Electromagnetic diaphragm metering pump one is the most fatal
Joint, must change at set intervals, and diaphragm cost is higher.
Fig. 1 is diaphragm sectional structure chart of the present invention.The diaphragm 1 that be can be seen that the present invention by upper figure is a kind of material
(tetrafluoro) is one-body molded, is i.e. made up of the compacting of pure solid PTFE, sintering, turning, can be compatible with almost all of chemicals.
Diaphragm arranges multiple concavo-convex wave structure according to diaphragm diameter and driving stroke length, because it is commaterial
The most there is not degumming problem, PTFE has splendid chemical corrosion resistance again, there's almost no asking of aging oxidation
Topic.
Fig. 2 is a kind of sectional structure chart sealing constructive embodiment of the present invention.A kind of exhaust gas from diesel vehicle post processing SCR system
Adding blue pump diaphragm sheet sealing structure, connect seat 3 and diaphragm 1 including pump head 2, pump head, diaphragm 1 is arranged on pump head 2 and pump head
Connecting between seat 3, pump head is connected seat with pump head and is bolted.Diaphragm is one-body molded by PTFE, diaphragm according to
Diaphragm diameter and driving stroke length arrange the concave surface of edge wave of multiple concavo-convex wave structure, pump head and diaphragm
Place arranges an O groove (not marking in figure), arranges the preposition O of diaphragm 4 in O groove, the preposition O of diaphragm 4 straight
Footpath matches with the diameter of O groove, and diaphragm is arranged on the preposition O of diaphragm and is connected between seat with pump head.Pump head and pump head
Connect seat and be equipped with 4 screw holes, connect seat by 4 fixed screws through pump head and pump head and be spirally connected with support and make diaphragm preposition
O deformation compresses diaphragm and forms wave soft seal, and pump chamber is separated into a closed containing cavity by diaphragm.
O groove not only can be arranged on pump head, and O groove can also be arranged on pump housing connection seat or O groove is same
Time be arranged on pump head and the pump housing and connect on seat, the diameter of O groove and the diameter phase of the wave concave surface of corresponding diaphragm
With.Add blue pump according to SCR and use traffic requirement, diaphragm diameter general 25-45 millimeter at actual condition.Such as diaphragm diameter
Be 30 millimeters, then suggestion diaphragm preposition O external diameter is 28 millimeters.Film partition is compressed by four screws arranged by pump head,
Thus form the preposition O wave soft seal mode of uniqueness.
The diaphragm of the present invention, when inhaling liquid condition, is in free state；When going out liquid status, diaphragm reaches to push up most
End, due to the existence of many waves (multiple concavo-convex wave structure) that diaphragm is arranged, by the stress of diaphragm by multiple waves
Line decomposes, thus avoids the concentration of stress point, so that the increase of the life-span geometry of diaphragm times.
The present invention has overturned SCR system and has added blue pump diaphragm sheet and traditional sealing means, substitutes former with pure tetrafluoro diaphragm
First compound diaphragm, uses wave structure, make diaphragm service life geometry times increase, reach more than 15 years, almost
With heavy-duty diesel vehicle same life, the consumable accessory of diaphragm is become conventional part, it is not necessary to carry out guarantee and change；The most also a labor is forever
The SCR that solves of ease adds blue pump hydraulic end leakage problem, is greatly reduced use and the maintenance cost of user, simultaneously will be for me
Major contribution is made in the enforcement smoothly of exhaust gas from diesel vehicle discharge France of state V, VI regulation.
Claims (9)
1. an exhaust gas from diesel vehicle post processing SCR system adds blue pump diaphragm sheet, it is characterised in that described diaphragm is by PTFE
One-body molded, diaphragm arranges multiple concavo-convex wave structure.
A kind of exhaust gas from diesel vehicle post processing SCR system the most according to claim 1 adds blue pump diaphragm sheet, it is characterised in that institute
State a diameter of 25-45 millimeter of diaphragm.
3. exhaust gas from diesel vehicle post processing SCR system adds a blue pump diaphragm sheet sealing structure, including pump head, pump head connect seat and every
Diaphragm, diaphragm is arranged on pump head and is connected between seat with pump head, and pump head is connected seat with pump head and is bolted, it is characterised in that
Described diaphragm is one-body molded by PTFE, and diaphragm arranges multiple concavo-convex wave structure, and described pump head and diaphragm are
Edge wave concave surface arranges an O groove, arranges the preposition O of diaphragm in O groove, and it is preposition that diaphragm is arranged on diaphragm
O is connected between seat with pump head.
A kind of exhaust gas from diesel vehicle post processing SCR system the most according to claim 3 adds blue pump diaphragm sheet sealing structure, and it is special
Levy and be that described pump head is connected seat and is equipped with 4 screw holes with pump head, connect seat by 4 fixed screws through pump head and pump head
Being spirally connected with support and make the deformation of diaphragm preposition O compress diaphragm formation wave soft sealing structure, pump chamber is separated by diaphragm
Become a closed containing cavity.
A kind of exhaust gas from diesel vehicle post processing SCR system the most according to claim 3 adds blue pump diaphragm sheet sealing structure, and it is special
Levy the diameter being described O groove identical with the diameter of the wave concave surface of corresponding diaphragm outermost edges.
A kind of exhaust gas from diesel vehicle post processing SCR system the most according to claim 3 adds blue pump diaphragm sheet sealing structure, and it is special
Levy a diameter of 25-45 millimeter being described diaphragm.
A kind of exhaust gas from diesel vehicle post processing SCR system the most according to claim 3 adds blue pump diaphragm sheet sealing structure, and it is special
Levy and be that the diameter of the preposition O of described diaphragm matches with the diameter of O groove.
A kind of exhaust gas from diesel vehicle post processing SCR system the most according to claim 3 adds blue pump diaphragm sheet sealing structure, and it is special
Levy and be that described O groove can also be arranged on the pump housing and connect on seat.
A kind of exhaust gas from diesel vehicle post processing SCR system the most according to claim 3 adds blue pump diaphragm sheet sealing structure, and it is special
Levy and be that described O groove can also be simultaneously located at pump head and the pump housing connects on seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610864625.1A CN106224213B (en) | 2016-09-30 | 2016-09-30 | A kind of exhaust gas from diesel vehicle post-processing SCR system adds blue pump diaphragm piece and sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610864625.1A CN106224213B (en) | 2016-09-30 | 2016-09-30 | A kind of exhaust gas from diesel vehicle post-processing SCR system adds blue pump diaphragm piece and sealing structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106224213A true CN106224213A (en) | 2016-12-14 |
| CN106224213B CN106224213B (en) | 2018-11-13 |
Family
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|---|---|---|---|
| CN201610864625.1A Active CN106224213B (en) | 2016-09-30 | 2016-09-30 | A kind of exhaust gas from diesel vehicle post-processing SCR system adds blue pump diaphragm piece and sealing structure |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106994758A (en) * | 2017-06-01 | 2017-08-01 | 南京金三力高分子科技有限公司 | A kind of motor vehicle diesel pump vent gas treatment pumping diaphragm and its curing forming mold and manufacture method |
| CN108223340A (en) * | 2017-12-29 | 2018-06-29 | 凯龙高科技股份有限公司 | A kind of diaphragm of diaphragm pump assembly for urea liquid |
| CN111094712A (en) * | 2017-09-11 | 2020-05-01 | 罗伯特·博世有限公司 | Connector for a fluid line of an exhaust gas aftertreatment system |
| CN111520312A (en) * | 2020-04-03 | 2020-08-11 | 利穗科技(苏州)有限公司 | Alternating sanitary diaphragm pump and filtering device thereof |
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| CN1846059A (en) * | 2003-09-02 | 2006-10-11 | 液压环有限公司 | Pump for conveying an exhaust gas aftertreatment medium, particularly a urea-water solution, for diesel engines |
| CN201003478Y (en) * | 2007-01-30 | 2008-01-09 | 上海江浪流体机械制造有限公司 | Pneumatic double diaphragm pump diaphragm movement cavity |
| CN104595165A (en) * | 2015-01-30 | 2015-05-06 | 清华大学苏州汽车研究院（吴江） | Diaphragm pump for liquid supply |
| CN206129562U (en) * | 2016-09-30 | 2017-04-26 | 罗凯缤 | Diesel exhaust aftertreatment SCR system adds blue pump diaphragm seal structure |
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2016
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1846059A (en) * | 2003-09-02 | 2006-10-11 | 液压环有限公司 | Pump for conveying an exhaust gas aftertreatment medium, particularly a urea-water solution, for diesel engines |
| DE202005002471U1 (en) * | 2005-02-16 | 2005-04-14 | Knf Neuberger Gmbh | Membrane pump comprises at least one sealing protrusion which is molded as a single piece together with a carrier ring consisting of a material different from the material of the pump-head |
| CN201003478Y (en) * | 2007-01-30 | 2008-01-09 | 上海江浪流体机械制造有限公司 | Pneumatic double diaphragm pump diaphragm movement cavity |
| CN104595165A (en) * | 2015-01-30 | 2015-05-06 | 清华大学苏州汽车研究院（吴江） | Diaphragm pump for liquid supply |
| CN206129562U (en) * | 2016-09-30 | 2017-04-26 | 罗凯缤 | Diesel exhaust aftertreatment SCR system adds blue pump diaphragm seal structure |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106994758A (en) * | 2017-06-01 | 2017-08-01 | 南京金三力高分子科技有限公司 | A kind of motor vehicle diesel pump vent gas treatment pumping diaphragm and its curing forming mold and manufacture method |
| CN106994758B (en) * | 2017-06-01 | 2023-05-16 | 南京金三力高分子科技有限公司 | Automobile diesel pump tail gas treatment pump film, vulcanization molding die and manufacturing method thereof |
| CN111094712A (en) * | 2017-09-11 | 2020-05-01 | 罗伯特·博世有限公司 | Connector for a fluid line of an exhaust gas aftertreatment system |
| CN108223340A (en) * | 2017-12-29 | 2018-06-29 | 凯龙高科技股份有限公司 | A kind of diaphragm of diaphragm pump assembly for urea liquid |
| CN111520312A (en) * | 2020-04-03 | 2020-08-11 | 利穗科技(苏州)有限公司 | Alternating sanitary diaphragm pump and filtering device thereof |
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| CN106224213B (en) | 2018-11-13 |
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