CN205823384U - A kind of airless injection system processed for diesel engine vent gas - Google Patents
A kind of airless injection system processed for diesel engine vent gas Download PDFInfo
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- CN205823384U CN205823384U CN201620357747.7U CN201620357747U CN205823384U CN 205823384 U CN205823384 U CN 205823384U CN 201620357747 U CN201620357747 U CN 201620357747U CN 205823384 U CN205823384 U CN 205823384U
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- diesel engine
- injection system
- vent gas
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Abstract
This utility model embodiment discloses a kind of airless injection system processed for diesel engine vent gas, and this airless injection system includes: enclosure；Filter assemblies, is arranged in enclosure, and including filter seat, filter element, sealing buffer and sealing ring, filter seat is arranged on the inwall of enclosure, and filter element is arranged in filter seat, seals buffer and is arranged between sealing ring and filter seat；Reversing valve assembly, is arranged in enclosure；Style centrifugal plunger bellows pumping element, connects reversing valve assembly, is arranged in enclosure；Electromagnet assembly, connects style centrifugal plunger bellows pumping element, is arranged in enclosure.Implement this utility model embodiment, have the advantages that the airless injection system processed for diesel engine vent gas of the present utility model adds sealing buffer in the filter, can effectively alleviate the pressure in filter, in extremely cold area, when electromotor cannot work or cast anchor, the aqueous solution of urea in filter freezes easily will not spalling by filter assemblies.
Description
Technical field
The present invention relates to diesel engine vent gas process field, particularly relate to a kind of solid injection processed for diesel engine vent gas
System.
Background technology
Airless injection system is a kind of by power unit and metering units separate diesel engine vent gas purifying processing device, by
Changing with the changes of contents of tail gas NOX in urea injecting quantity, in prior art, the more difficult control of emitted dose, accuracy of spray is general
± 5%, urea liquid deficiency to a certain extent or waste certainly will be caused, and institute's jet quality concentration is 32.5%
Can form crystallization when urea liquid is at-11 DEG C, cause line clogging, in extremely cold area, electromotor cannot work or throw
During anchor, the aqueous solution of urea in filter freezes filter assemblies spalling easily.
Summary of the invention
Embodiment of the present invention technical problem to be solved is: the existing solid injection processed for diesel engine vent gas
System is in extremely cold area, and when electromotor cannot work or cast anchor, the aqueous solution of urea in filter freezes and easily will filter
Device assembly spalling.
In order to solve above-mentioned technical problem, embodiments provide a kind of for diesel engine vent gas process without gas blowout
Penetrating system, this airless injection system being used for diesel engine vent gas process includes: enclosure；Filter assemblies, is arranged at enclosure
In, including filter seat, filter element, sealing buffer and sealing ring, filter seat is arranged on the inwall of enclosure, and filter element sets
It is placed in filter seat, seals buffer and be arranged between sealing ring and filter seat；Reversing valve assembly, is arranged at enclosure
In；Style centrifugal plunger bellows pumping element, connects reversing valve assembly, is arranged in enclosure；Electromagnet assembly, connect style centrifugal plunger every
Membrane pump assembly, is arranged in enclosure.
Wherein, reversing valve assembly includes the first valve body, the second valve body, commutation fork and sealing rubber cover, the first valve body peace
On the filter base, the second valve body is arranged on the first valve body dress, and sealing rubber cover is arranged on commutation fork upper formation commutation fork group
Part, commutation fork assembly is arranged between the first valve body and the second valve body.
Wherein, style centrifugal plunger bellows pumping element includes bearing block, deep groove ball bearing, axle, excentric sleeve, plunger, diaphragm cavity
Seal lid, diaphragm flap, diaphragm cavity seat, import check valve, Outlet check valves and diaphragm；Excentric sleeve is fixed on axle also
Being installed on bearing block together with deep groove ball bearing, plunger is arranged on the bearing outer ring of band excentric sleeve, and diaphragm flap is again
Be arranged on plunger end rise push-and-pull diaphragm motion, diaphragm cavity seat by diaphragm cavity seal lid connect sealing, another side with change
In valve module, the second valve body connects sealing, imports and exports check valve and is then arranged in diaphragm cavity seat valve hole.
Wherein, filter assemblies and enclosure are integral molded plastic structure.
Wherein, sealing buffer and include columnar part and be positioned at the tabs of columnar part one end, tabs is same with columnar part
Axle is arranged, and tabs is arranged between sealing ring and filter seat, and columnar part is inserted in filter element.
Implement the embodiment of the present invention, have the advantages that the present invention for diesel engine vent gas process without gas blowout
System of penetrating adds sealing buffer in the filter, it is possible to the effective pressure alleviated in filter, in extremely cold area, sends out
When motivation cannot work or cast anchor, the aqueous solution of urea in filter freezes easily will not spalling by filter assemblies.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
In having technology to describe, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to
Other accompanying drawing is obtained according to these accompanying drawings.
Fig. 1 is the Facad structure of a kind of airless injection system processed for diesel engine vent gas of first embodiment of the invention
Schematic diagram；
Fig. 2 is the side structure schematic diagram of a kind of airless injection system processed for diesel engine vent gas in Fig. 1；
Fig. 3 is that a kind of decomposition for the filter assemblies of the airless injection system of diesel engine vent gas process in Fig. 1 is shown
It is intended to；
Fig. 4 is that a kind of decomposition for the reversing valve assembly of the airless injection system of diesel engine vent gas process in Fig. 1 is shown
It is intended to；
Fig. 5 is the style centrifugal plunger bellows pumping element of a kind of airless injection system processed for diesel engine vent gas in Fig. 1
Decomposing schematic representation.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Describe, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments wholely.Based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under not making creative work premise
Embodiment, broadly falls into the scope of protection of the invention.
Refer to a kind of solid injection processed for diesel engine vent gas that Fig. 1-Fig. 2, Fig. 1 are first embodiment of the invention
The Facad structure schematic diagram of system；Fig. 2 is the side knot of a kind of airless injection system processed for diesel engine vent gas in Fig. 1
Structure schematic diagram.In the present embodiment, the airless injection system processed for diesel engine vent gas includes: enclosure 1, filter group
Part, reversing valve assembly 3 and style centrifugal plunger bellows pumping element 5.
Enclosure 1 is provided with aqueous solution of urea import 7, aqueous solution of urea outlet 8, urea liquid overfall 9, controls wire harness
Interface 11, waterproof and breathable film interface 10 etc..
It is a kind of mistake of airless injection system processed for diesel engine vent gas in Fig. 1 further referring to Fig. 3, Fig. 3
The decomposing schematic representation of filter module.Filter assemblies is arranged in enclosure 1, including filter seat 2, filter element 21, seals buffering
Device 22 and sealing ring.Filter seat 2 is arranged on the inwall of enclosure 1, and filter element 21 is arranged in filter seat 2, seals slow
Rush device 22 to be arranged between sealing ring and filter seat 2.Filter assemblies and enclosure 1 are integral molded plastic structure.Seal buffering
Device 22 includes columnar part and is positioned at the tabs of columnar part one end, and tabs is coaxially disposed with columnar part, and tabs is arranged at
Between sealing ring and filter seat 2, columnar part is inserted in filter element 21.
It is a kind of airless injection system processed for diesel engine vent gas in Fig. 1 further referring to Fig. 4 and Fig. 5, Fig. 4
The decomposing schematic representation of reversing valve assembly；Fig. 5 is the inclined of a kind of airless injection system for diesel engine vent gas process in Fig. 1
The decomposing schematic representation of stem plug bellows pumping element.Electromagnetic valve component 6 includes push rod, electric magnet, spring, cuts somebody's hair.Reversing valve assembly
3, style centrifugal plunger bellows pumping element 5 and electromagnet assembly 6 are similarly provided in enclosure 1.Wherein, reversing valve assembly 3 includes
One valve body the 31, second valve body 32, commutation fork 34 and sealing rubber cover 33.First valve body 31 is installed on the filter base, and second
Valve body 32 is arranged on the first valve body 31, and sealing rubber cover 33 is arranged on commutation fork 34 and forms commutation fork 34 assemblies, commutation fork
34 assemblies are arranged between the first valve body 31 and the second valve body 32.During initial position, reversing valve assembly 3 is by the second valve body 32 fluid
Mouth is blocked, and the first valve body 31 fluid flow port work, after electric magnet energising, reversing valve assembly 3 is partial to the first valve body 31 and by its fluid flow port
Block, the second valve body 32 fluid flow port work.Style centrifugal plunger bellows pumping element 5 includes bearing block 501, deep groove ball bearing 502, axle
506, excentric sleeve 505, plunger 504, diaphragm cavity seal lid 507, diaphragm flap 513, diaphragm cavity seat 509, import check valve
510, Outlet check valves 511 and diaphragm 508.Excentric sleeve 505 is fixed on axle and pacifies together with deep groove ball bearing 502
Being loaded on bearing block 501, plunger 504 is arranged on the bearing outer ring of band excentric sleeve 505, and diaphragm flap 513 is in turn mounted at post
Filling in 504 ends to play push-and-pull diaphragm 508 and move, diaphragm cavity seat 509 is sealed lid 507 connection by diaphragm cavity and seals, another side
It is connected sealing with the second valve body 32 in reversing valve assembly 3, imports and exports check valve 511 and be then arranged in diaphragm cavity seat 509 valve opening.When
When motor 4 starts, its circular motion is changed into plunger 504 and the linear motion of diaphragm flap 513, plunger by excentric sleeve 505
504 and diaphragm flap 513 draw diaphragm 508 cause cavity volume increase time, import check valve 510 is opened, and completes imbibition process, when
Plunger 504 and diaphragm flap 513 push away diaphragm 508 cause cavity volume reduce time, complete discharge opeing process.
It realizes process: the energising of (1) motor 4 drives eccentric bushing on style centrifugal plunger pump pump shaft to rotate, and eccentric bushing is installed
One deep groove ball bearing, deep groove ball bearing is installed again a plunger, the rotational band dynamic bearing outer ring of eccentric bushing and plunger motion, plunger
Be connected with diaphragm assembly again and together with move reciprocatingly, complete normal extraction and the discharge function of style centrifugal plunger membrane pump.When every
When film chamber volume increases, aqueous solution of urea is pushed import check valve from urea box open and is entered intracavity, completes imbibition process, works as barrier film
When chamber volume reduces, intracavity produces certain pressure, and Outlet check valves is opened, and completes discharge opeing process.(2) when needs emptying system
During internal residual urea liquid, electric magnet is energized, and reversing valve assembly 3 will under electric magnet, push rod, the effect pitched of cutting somebody's hair and commutate
Sealing rubber cover is pushed original flow path port side to and is produced and seal, and original flow path is blocked up unlatchings, it is achieved fluid path switching, at barrier film
Air emptying function is completed under the effect of pump.(3) when in NOX in tail gas, content is detected by a sensor increase or reduces, carbamide
Control system unit (DCU) calculates the urea requirement amount of theory, and the expulsion pressure demarcated with nozzle is made to compare with injection flow
Relatively and revise, calculating expulsion pressure required under current state, this expulsion pressure is pressed again produced by current dosing pump
Force signal compares, and this feeds back to DCU, DCU issues instructions to motor 4, and motor 4 regulates rotating speed, makes dosing pump produce
The expulsion pressure reached required for pressure is satisfied, uses this kind of advanced injection control strategy and combines actual condition debugging, repaiies
Just, optimal control program can meet accuracy of spray and reach ± 3%, higher than prior art ± 5%.
Implement the embodiment of the present invention, have the advantages that the present invention for diesel engine vent gas process without gas blowout
System of penetrating adds sealing buffer in the filter, it is possible to the effective pressure alleviated in filter, in extremely cold area, sends out
When motivation cannot work or cast anchor, the aqueous solution of urea in filter freezes easily will not spalling by filter assemblies.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all essences in the present invention
Within god and principle, any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.
Claims (6)
1. the airless injection system processed for diesel engine vent gas, it is characterised in that described for diesel engine vent gas process
Airless injection system include:
Enclosure；
Filter assemblies, is arranged in described enclosure, including filter seat, filter element, sealing buffer and sealing ring, described
Filter seat is arranged on the inwall of described enclosure, and described filter element is arranged in described filter seat, described sealing buffer
It is arranged between described sealing ring and described filter seat；
Reversing valve assembly, is arranged in described enclosure；
Style centrifugal plunger bellows pumping element, connects described reversing valve assembly, is arranged in described enclosure；
Electromagnet assembly, connects described style centrifugal plunger bellows pumping element, is arranged in described enclosure.
The airless injection system processed for diesel engine vent gas the most according to claim 1, it is characterised in that described commutation
Valve module includes the first valve body, the second valve body, commutation fork and sealing rubber cover, and described first valve body is arranged on described filter
On seat, described second valve body is arranged on described first valve body, and described sealing rubber cover is arranged on the described upper formation of commutation fork and changes
To fork assembly, described commutation fork assembly is arranged between the first valve body and the second valve body.
The airless injection system processed for diesel engine vent gas the most according to claim 2, it is characterised in that described bias
Plunger piston diaphragm pump assembly include bearing block, deep groove ball bearing, axle, excentric sleeve, plunger, diaphragm cavity seal lid, diaphragm flap, every
Film chamber seat, import check valve, Outlet check valves and diaphragm；Described excentric sleeve fixing on the shaft and together with described deeply
Ditch ball bearing is installed on described bearing block together, and described plunger is arranged on on the described bearing outer ring of described excentric sleeve,
The described plunger end that is in turn mounted at described diaphragm flap plays described in push-and-pull diaphragm motion, described diaphragm cavity seat by described every
Film chamber seals lid and connects sealing, and another side is connected sealing with the second valve body described in described reversing valve assembly, and described import and export are single
Then it is arranged in described diaphragm cavity seat valve hole to valve.
The airless injection system processed for diesel engine vent gas the most according to claim 1, it is characterised in that described filtration
Device assembly and described enclosure are integral molded plastic structure.
The airless injection system processed for diesel engine vent gas the most according to claim 1, it is characterised in that described sealing
Buffer includes columnar part and is positioned at the tabs of described columnar part one end, and described tabs coaxially sets with described columnar part
Putting, described tabs is arranged between described sealing ring and described filter seat, and described columnar part is inserted in described filter element.
The airless injection system processed for diesel engine vent gas the most according to claim 1, it is characterised in that described encapsulation
Box is provided with aqueous solution of urea import, aqueous solution of urea outlet, urea liquid overfall, controls wiring harness interface and waterproof
Air film interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620357747.7U CN205823384U (en) | 2016-04-26 | 2016-04-26 | A kind of airless injection system processed for diesel engine vent gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620357747.7U CN205823384U (en) | 2016-04-26 | 2016-04-26 | A kind of airless injection system processed for diesel engine vent gas |
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| Publication Number | Publication Date |
|---|---|
| CN205823384U true CN205823384U (en) | 2016-12-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620357747.7U Active CN205823384U (en) | 2016-04-26 | 2016-04-26 | A kind of airless injection system processed for diesel engine vent gas |
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| CN (1) | CN205823384U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106762048A (en) * | 2017-01-18 | 2017-05-31 | 重庆凯瑞伟柯斯环保科技有限公司 | Pumping unit and the urea liquid feed system and method for SCR system crystallization-preventive |
-
2016
- 2016-04-26 CN CN201620357747.7U patent/CN205823384U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106762048A (en) * | 2017-01-18 | 2017-05-31 | 重庆凯瑞伟柯斯环保科技有限公司 | Pumping unit and the urea liquid feed system and method for SCR system crystallization-preventive |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Wuhan luotefu Technology Co., Ltd Assignor: LOTUSFAIRY POWER TECHNOLOGIES CORP. Contract record no.: X2019420000008 Denomination of utility model: A air -free injection system for diesel engine tail gas treatment Granted publication date: 20161221 License type: Exclusive License Record date: 20191106 |