CN110295975A - The ventilating system of urea box and the urea box - Google Patents
The ventilating system of urea box and the urea box Download PDFInfo
- Publication number
- CN110295975A CN110295975A CN201810239659.0A CN201810239659A CN110295975A CN 110295975 A CN110295975 A CN 110295975A CN 201810239659 A CN201810239659 A CN 201810239659A CN 110295975 A CN110295975 A CN 110295975A
- Authority
- CN
- China
- Prior art keywords
- platen
- pedestal
- ventilated membrane
- waterproof ventilated
- ventilating system
- 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.)
- Pending
Links
Classifications
-
- 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
- F01N3/18—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 methods of operation; Control
- F01N3/20—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 methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2066—Selective catalytic reduction [SCR]
-
- 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
- F01N2590/00—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines
- F01N2590/08—Exhaust or silencing apparatus adapted to particular use, e.g. for military applications, airplanes, submarines for heavy duty applications, e.g. trucks, buses, tractors, locomotives
-
- 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
- F01N2610/1406—Storage means for substances, e.g. tanks or reservoirs
-
- 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
- F01N2610/1466—Means for venting air out of conduits or tanks
-
- 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
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Treating Waste Gases (AREA)
Abstract
The present invention relates to vehicle exhaust emission technical fields.The present invention provides a kind of ventilating system of urea box, including shield, platen, waterproof ventilated membrane and pedestal；Shield has cavity, and waterproof ventilated membrane is set between platen and pedestal, and platen is located above waterproof ventilated membrane, and shield encapsulates platen, waterproof ventilated membrane and pedestal.Due to being equipped with waterproof ventilated membrane in ventilating system, urea liquid cannot pass through waterproof ventilated membrane when respiration, it avoids urea liquid and is brought into vent line, solve the problems, such as that ice blockage pipeline brings the failure of ventilating system and the failure of SCR system in low temperature；And external dust impurity can also be stopped by waterproof ventilated membrane, have the function that purify air inlet, solve the problems, such as when respiration external dust and impurity enter inside urea box and block air-breather and caused by SCR system failure.
Description
Technical field
The present invention relates to vehicle exhaust emission technical fields, and in particular to a kind of ventilating system and the urea of urea box
Case.
Background technique
Currently, being equipped with urea box using the heavy truck of SCR technology route with the upgrading of emission regulation, make
With mainly stored urea solution.Urea liquid is in negative pressure state after being pumped out by urea pump in routine use in cabinet,
Need to come from ambient inlet air the pressure balance of guard box inside and outside；Han Qu is in use, due to heating urea box in winter
Lead to pressure rise in cabinet, it is also desirable to the intracorporal upper gas of case be discharged, to maintain the pressure balance inside and outside cabinet.And it is complete
It is known as the ventilating system or breather valve of urea box at this pressure balanced device.
Currently, the ventilating system of most urea boxes is to do the unthreaded hole or built-in filter pulp, filter paper of minor diameter in cabinet upper end
Device carry out respiration.Since respiration can bring part urea liquid in ventilating system into, when temperature is too low
This partially liq, which freezes, will lead to the failure of ventilating system；And respiration can also bring external dust impurity into ventilating system
Blocking channel causes to fail；In this way, making pressure reduction in cabinet during normal use due to pump-absorb action, SCR system being caused to be built
Pressure is difficult；And pressure rise will lead to cabinet bulge in case when heating in winter to urea box.
In view of the above drawbacks, creator of the present invention obtains the present invention by prolonged research and practice finally.
Summary of the invention
To solve above-mentioned technological deficiency, the present invention provide it is a kind of effectively carry out respiration and non-maintaining urea box it is logical
Wind system and the urea box.
To realize the above-mentioned technical purpose, the present invention adopts the following technical scheme:
A kind of ventilating system of urea box, comprising:
Shield with cavity；
The waterproof ventilated membrane being set in the cavity of the shield.
Further, which further includes platen and pedestal, and the waterproof ventilated membrane is set to the platen and described
Between pedestal, the platen is located above the waterproof ventilated membrane, and the platen compresses the waterproof ventilated membrane and the pedestal
It is assembled together.
Further, the platen, waterproof ventilated membrane and pedestal are located in the shield cavity, so that the shield encapsulates
The platen, waterproof ventilated membrane and pedestal.
Further, the platen and the pedestal are the grating texture that middle part is equipped with hollow out all round closure.
It further, is tight fit between the platen and the pedestal.
Further, the pedestal is circular ring structure, and the outer wall bottom of the pedestal is along the circumferential direction equipped with annular flange,
Round interlayer is arranged in the inner radial of the pedestal, and the circle interlayer is the grating texture that middle part is equipped with hollow out all round closure；
The platen is circular ring structure, and the platen top surface is the grating texture that middle part is equipped with hollow out all round closure, described
Platen is loaded in the cavity of the pedestal and positioned at the round interlayer top, the platen outer diameter and base inner wall diameter
Form tight fit.
Further, the cavity of the shield is circle, and the cavity interior walls diameter is greater than the base outer wall diameter simultaneously
Less than outside the annular flange diametrically；Shield outer wall lower part is circumferentially with flange.
Further, the shield is equipped with venthole, and the venthole is connected with the cavity.
Further, the waterproof ventilated membrane is microporous teflon membran.
A kind of urea box comprising urea cabinet and above-mentioned ventilating system, the ventilating system are installed on urea cabinet
Ventilation opening on.
The present invention has obvious advantages and beneficial effects compared with the existing technology, specifically, by above-mentioned technical proposal
Known to:
Due to being equipped with waterproof ventilated membrane in ventilating system, urea liquid cannot be kept away by waterproof ventilated membrane when respiration
Exempted from urea liquid and be brought into vent line, solve the ice blockage pipeline in low temperature bring ventilating system failure and
The problem of failure of SCR system；And external dust impurity can also be stopped by waterproof ventilated membrane, reach the work of purification air inlet
With, when solving respiration external dust and impurity enter inside urea box and block air-breather and caused by SCR system
The problem of failure.
As a preferred embodiment, waterproof ventilated membrane uses microporous teflon membran, and microporous teflon membran has
Following characteristic:
Even if can guarantee humid air 1, under very low pressure difference yet and other gases are gone everywhere without any hindrance here, and aqueous solution is then not
It can pass through；
2, aperture compared with it is small, be evenly distributed, porosity it is big, while maintaining the circulation of air, dust granules can be filtered；
3, surface is extremely smooth, and coefficient of friction is small, thicker dust layer is hardly formed in film surface, and dust can
Naturally it removes；
It 4, can effective resistant to urea solution corrosion；
Microporous teflon membran can be used in waterproof ventilated membrane, due to the extremely low friction system in microporous teflon membran surface
Number, is not easy attaching liq and dust etc., has self-cleaning function.It ensure that being normally carried out for respiration.
The present invention effectively avoids the possible failure of urea box aerating system in routine use and is effectively maintained
Urea box body internal and external pressure balance, and urea box aerating system of the present invention can realize it is non-maintaining.
Detailed description of the invention
Fig. 1 is the explosive view of the component of aerating system of the present invention.
Description of drawing identification:
1, shield 11, venthole
12, flange 2, platen
21, top surface 22, platen outer wall
3, waterproof ventilated membrane 4, pedestal
41, annular flange 42, round interlayer
43, base inner wall
Specific embodiment
Below in conjunction with attached drawing, the forgoing and additional technical features and advantages are described in more detail.
As shown in Figure 1, that show the specific structure of the preferred embodiments of the invention,
The ventilating system of urea box, including shield 1, platen 2, waterproof ventilated membrane 3 and pedestal 4；Shield has cavity, waterproof
Ventilated membrane 3 is set between the platen 2 and the pedestal 4, and the platen 2 is located at 3 top of waterproof ventilated membrane, the platen
2 compress the waterproof ventilated membrane 3 is assembled together with the pedestal 4；The platen 2, waterproof ventilated membrane 3 and pedestal 4 are located at institute
It states in shield cavity, so that the shield 1 encapsulates the platen 2, waterproof ventilated membrane 3 and pedestal 4.The platen 2 and the bottom
Seat 4 is the grating texture that middle part is equipped with hollow out all round closure.
Preferably, it is tight fit between the platen 2 and the pedestal 4, is fixed to provide support to waterproof ventilated membrane 3
Effect, ruptures to avoid the overtension of waterproof ventilated membrane 3 under heavy traffic condition.
The pedestal 4 is circular ring structure, and the outer wall bottom of the pedestal is along the circumferential direction equipped with annular flange 41, the bottom
Round interlayer 42 is arranged in the inner radial of seat, and the circle interlayer is the grating texture that middle part is equipped with hollow out all round closure；
The platen 2 is circular ring structure, and the platen top surface 21 is the grating texture that middle part is equipped with hollow out all round closure, institute
Platen is stated loaded in the cavity of the pedestal and positioned at the round interlayer top, 22 diameter of platen outer wall and base inner wall
43 diameters form tight fit.
The cavity of the shield is circle, and the cavity interior walls diameter is greater than the base outer wall diameter and is less than the ring
Outside shape flange 41 diametrically；Shield outer wall lower part is circumferentially with flange 12.
The shield is equipped with venthole 11.
As a preferred embodiment, the waterproof ventilated membrane 3 is microporous teflon membran.
Microporous teflon membran has the property that
Even if can guarantee humid air 1, under very low pressure difference yet and other gases are gone everywhere without any hindrance here, and aqueous solution is then not
It can pass through；
2, aperture compared with it is small, be evenly distributed, porosity it is big, while maintaining the circulation of air, dust granules can be filtered；
3, surface is extremely smooth, and coefficient of friction is small, thicker dust layer is hardly formed in film surface, and dust can
Naturally it removes；
It 4, can effective resistant to urea solution corrosion；
Urea box ventilating operation principle provided by the invention is as follows:
In routine use, the characteristics of due to microporous teflon membran 3, urea liquid cannot be micro- by polytetrafluoroethylene (PTFE)
Pore membrane 3；And external dust impurity is also due to microporous teflon membran 3 is blocked in except filter membrane, reach purify into
The effect of gas.Due to the extremely low coefficient of friction of film surface, it is not easy attaching liq and dust etc., there is self-cleaning function.Guarantee
Being normally carried out of respiration.
Based on above description, the present invention avoided when respiration in urea box routine use urea liquid be brought into it is logical
Air pipe, in low temperature, ice blockage pipeline brings the failure of aerating system and the failure of SCR system.
Based on above description, the present invention avoids external dust in urea box routine use and impurity enters in urea box
Portion and block air-breather and caused by SCR system failure.
Based on above description, the present invention effectively avoids the possible failure of urea box ventilation system in routine use and goes forward side by side
Row effectively maintains urea box body internal and external pressure balance, and urea box aerating system of the present invention can be realized and exempt to tie up
Shield.
A kind of urea box comprising urea cabinet and above-mentioned ventilating system, the ventilating system are installed on urea cabinet
Ventilation opening on.
The course of work that the present embodiment is described in detail is as follows:
When vehicle operates normally, the swabbing action of urea pump causes pressure in cabinet to decline.Ventilating system two sides occur
Pressure difference, outside air enter in urea box via shield 1 to waterproof ventilated membrane 3, simultaneously because the performance of waterproof ventilated membrane 3 is special
Point has filtered out the impurity in outside air, realizes purification function；The pressure inside and outside urea box body is also balanced simultaneously.When
Cold district is run vehicle in winter, and when urea box heating is opened, expanded by heating pressure rise in cabinet, ventilating system two sides go out
Cabinet is discharged via shield 1 by waterproof ventilated membrane 3 in existing pressure difference, box house top tank air.It has been achieved inside and outside cabinet
Pressure balance.Due to waterproof ventilated membrane 3 performance characteristics and only gas could penetrate waterproof ventilated membrane 3, urea liquid is not
It can penetrate.Secondly as the characteristics of waterproof ventilated membrane 3, surface is extremely smooth, and coefficient of friction is small.Dust and condensate will not be anti-
It accumulates, cover on water ventilated membrane 3, influence venting capability.Therefore ventilating system can be realized non-maintaining.
The foregoing is merely a prefered embodiment of the invention, is merely illustrative for the purpose of the present invention, and not restrictive.This
The structure and connection type etc. of each component may be changed in invention, it is all based on the technical solution of the present invention
The equivalents and improvement of progress, should not exclude except protection scope of the present invention.
Claims (10)
1. a kind of ventilating system of urea box characterized by comprising
Shield with cavity；
The waterproof ventilated membrane being set in the cavity of the shield.
2. a kind of ventilating system of urea box as described in claim 1, which is characterized in that it further include platen and pedestal, it is described
Waterproof ventilated membrane is set between the platen and the pedestal, and the platen is located above the waterproof ventilated membrane, the platen
The waterproof ventilated membrane is compressed to be assembled together with the pedestal.
3. a kind of ventilating system of urea box as claimed in claim 2, which is characterized in that the platen, waterproof ventilated membrane and
Pedestal is located in the shield cavity, so that the shield encapsulates the platen, waterproof ventilated membrane and pedestal.
4. a kind of ventilating system of urea box as claimed in claim 3, which is characterized in that the platen and the pedestal are
Middle part is equipped with the grating texture of hollow out all round closure.
5. a kind of ventilating system of urea box as claimed in claim 3, which is characterized in that between the platen and the pedestal
For tight fit.
6. a kind of ventilating system of urea box as claimed in claim 3, which is characterized in that
The pedestal is circular ring structure, and the outer wall bottom of the pedestal is along the circumferential direction equipped with annular flange, the pedestal it is interior
Portion is arranged radially round interlayer, and the circle interlayer is the grating texture that middle part is equipped with hollow out all round closure；
The platen is circular ring structure, and the platen top surface is the grating texture that middle part is equipped with hollow out all round closure, the platen
In cavity loaded on the pedestal and it is located above the round interlayer, the platen outer diameter is formed with base inner wall diameter
Tight fit.
7. a kind of ventilating system of urea box as claimed in claim 6, which is characterized in that
The cavity of the shield is circle, and the cavity interior walls diameter is greater than the base outer wall diameter and is less than the convex annular
Edge is outside diametrically；
Shield outer wall lower part is circumferentially with flange.
8. a kind of ventilating system of urea box as described in claim 1, which is characterized in that the shield is equipped with venthole,
The venthole is connected with the cavity.
9. a kind of ventilating system of urea box as described in any of the claims 1 to 8, which is characterized in that the waterproof ventilated membrane
For microporous teflon membran.
10. a kind of urea box, which is characterized in that including urea cabinet and ventilation as claimed in any one of claims 1 to 9
System, the ventilating system are installed on the ventilation opening of urea cabinet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810239659.0A CN110295975A (en) | 2018-03-22 | 2018-03-22 | The ventilating system of urea box and the urea box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810239659.0A CN110295975A (en) | 2018-03-22 | 2018-03-22 | The ventilating system of urea box and the urea box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110295975A true CN110295975A (en) | 2019-10-01 |
Family
ID=68025642
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810239659.0A Pending CN110295975A (en) | 2018-03-22 | 2018-03-22 | The ventilating system of urea box and the urea box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110295975A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114233451A (en) * | 2021-12-23 | 2022-03-25 | 潍柴动力股份有限公司 | Method and device for determining air vent condition of urea box |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202435758U (en) * | 2012-02-14 | 2012-09-12 | 常州市泛亚微透科技有限公司 | Waterproof ventilating bolt used for automobile electric appliance |
| CN205207824U (en) * | 2015-11-02 | 2016-05-04 | 宁波通冠电气自动化设备有限公司 | Waterproof ventilation valve of heat dissipation type |
| WO2017090935A1 (en) * | 2015-11-24 | 2017-06-01 | 주식회사 아모그린텍 | Nanofiber vent device for urea water tank and method for manufacturing same |
| KR20170143099A (en) * | 2016-06-20 | 2017-12-29 | 현대자동차주식회사 | urea cap for vehicle haivng membrane |
-
2018
- 2018-03-22 CN CN201810239659.0A patent/CN110295975A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202435758U (en) * | 2012-02-14 | 2012-09-12 | 常州市泛亚微透科技有限公司 | Waterproof ventilating bolt used for automobile electric appliance |
| CN205207824U (en) * | 2015-11-02 | 2016-05-04 | 宁波通冠电气自动化设备有限公司 | Waterproof ventilation valve of heat dissipation type |
| WO2017090935A1 (en) * | 2015-11-24 | 2017-06-01 | 주식회사 아모그린텍 | Nanofiber vent device for urea water tank and method for manufacturing same |
| KR20170143099A (en) * | 2016-06-20 | 2017-12-29 | 현대자동차주식회사 | urea cap for vehicle haivng membrane |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114233451A (en) * | 2021-12-23 | 2022-03-25 | 潍柴动力股份有限公司 | Method and device for determining air vent condition of urea box |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191001 |
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| RJ01 | Rejection of invention patent application after publication |