CN102698482B - Aqueous urea filter - Google Patents
Aqueous urea filter Download PDFInfo
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- CN102698482B CN102698482B CN201210209497.9A CN201210209497A CN102698482B CN 102698482 B CN102698482 B CN 102698482B CN 201210209497 A CN201210209497 A CN 201210209497A CN 102698482 B CN102698482 B CN 102698482B
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- sheet
- conducting strip
- central tube
- constant temperature
- end cover
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Abstract
The invention discloses an aqueous urea filter which comprises an upper end cover, a lower end cover and a central pipe arranged between the two end covers, wherein filter paper is arranged on the outer peripheral side of the central pipe. The aqueous urea filter is further provided with a heating structure which is connected with a conducting wire; the heating structure is formed by an inner heat conducting sheet on the inner side of the central pipe, a constant temperature sheet embedded in the central pipe and an outer heat conducting sheet on the outer side of the central pipe, wherein the inner heat conducting sheet, the constant temperature sheet and the outer heat conducting sheet are fitted with one another. According to the aqueous urea filter, in order to ensure that the temperature of the aqueous urea is within reliable working temperature range, a PTC (phenylthiocarbamide) ceramic sheet is embedded into the framework-type central pipe and is heated through an electronic heating sheet, so that the ambient temperature of the aqueous urea filter when working is kept more than 25 DEG C, the flow capacity of the filter is prevented from being influenced due to too low ambient temperature while the filtration efficiency requirement of the aqueous urea is fully satisfied, and the efficiency of a whole tail gas processing system is improved.
Description
Technical field
the present invention relates to a kind of auto parts and components, especially relate to a kind of automobile exhaust gas processing apparatus, be specifically related to a kind of aqueous solution of urea cleaner.
Background technology
in the motor vehicles state IV being about to implement, state V discharge standard, more harsh toxic emission and power conservation requirement are proposed to diesel engine, in order to reach state IV, state V discharge standard, by SCR(Selective Catalytic Reduction Technology SCR) technology reduces the nitride NO of engine
x
discharge.SCR system comprises urea tank (loading diesel engine vent gas treatment fluid), SCR catalytic reactor.The running of SCR system is: when finding there is nitrogen oxide in blast pipe, urea tank sprays diesel engine vent gas treatment fluid automatically, there is redox reaction in diesel engine vent gas treatment fluid and nitrogen oxide, generate free of contamination nitrogen and steam discharge in SCR catalytic reactor.In whole SCR exhaust treatment system, diesel engine vent gas treatment fluid (domestic be commonly called as into: automobile urea, urea for vehicle, automobile environment-protection urea) is the running stores must used in SCR technology.
to in the SCR system of vent gas treatment, urea is the indispensable material participating in reaction, and very high to nozzle required precision aqueous solution of urea being carried out atomized spray.During due to low temperature, the high easily crystallization of concentration of aqueous solution of urea therefore not easily atomized spray, for ensure aqueous solution of urea cleaning and under preference temperature best result of use, therefore urea cleaner is installed.
the scheme that existing aqueous solution of urea cleaner generally adopts pump chamber built-in, mostly adopts the structural design of the cleaner structure of wound form or star-like paper folding in filter design.But aqueous solution of urea temperature there will be the phenomenons such as crystallization after being less than 11 DEG C, reduce the circulation of aqueous solution of urea, increase aqueous solution of urea by cleaner circulating resistance.
Summary of the invention
technical problem to be solved by this invention is to overcome aqueous solution of urea in existing urea cleaner and easily occurs the defect of crystallization, provides a kind of embedded aqueous solution of urea cleaner structure, the effect used under ensureing the cleaning of aqueous solution of urea and low temperature condition.
in order to solve the problems of the technologies described above, technical scheme of the present invention is: aqueous solution of urea cleaner, comprises upper end cover, bottom end cover, and is located at the central tube between described two end cap, and described central tube periphery is filter paper,
it is characterized in that, described urea cleaner is also provided with heating arrangement, and described heating arrangement connects wire.
preferably, described heating arrangement is the outer conducting strip outside the embedded constant temperature sheet of interior conducting strip inside described central tube or central tube or central tube.
preferably, described heating arrangement is the embedded constant temperature sheet of interior conducting strip inside described central tube and central tube, and described interior conducting strip and the laminating of described constant temperature sheet.
preferably, described heating arrangement is the embedded constant temperature sheet of outer conducting strip outside described central tube and central tube, and described outer conducting strip and the laminating of described potsherd.
preferably, described heating arrangement is the outer conducting strip outside the embedded constant temperature sheet of interior conducting strip inside described central tube, central tube and central tube, and described interior conducting strip, bonded to each other between constant temperature sheet and outer conducting strip.
preferably, described constant temperature sheet is PTC heating ceramic sheet, and described interior conducting strip, outer conducting strip are sheet metal structure.
preferably, described bottom end cover has groove and coordinates with the boss of pump chamber.
preferably, described filter paper is star folded filter paper.
preferably, described upper end cover is provided with for the sealing ring by upper end cover, pump chamber combination seal.
advantage of the present invention is:
1. aqueous solution of urea cleaner of the present invention is in order to ensure that the temperature of aqueous solution of urea is in reliable operating temperature, skeleton central tube embedded in PTC heating ceramic sheet, by the heating of electrons heat sheet, the environment temperature of aqueous solution of urea cleaner work is made to remain on more than 25 DEG C.While the filter efficiency meeting aqueous solution of urea completely requires, avoid because the too low through-current capability affecting cleaner of environment temperature, whole exhaust treatment system efficiency is increased.
in order to ensure enough circulation areas of aqueous solution of urea, have employed star-like paper folding mode, and have employed skeleton central tube, adding filter area.
Accompanying drawing explanation
below in conjunction with drawings and Examples, the invention will be further described:
fig. 1 is aqueous solution of urea cleaner one structural representation of the present invention;
fig. 2 is the center tube structure schematic diagram of aqueous solution of urea cleaner of the present invention.
fig. 3 is the A-A profile of Fig. 2.
wherein: 1 is sealing ring, 2 is upper end cover, and 3 is outer conducting strip, and manage centered by 4,5 be filter paper, and 6 is heating ceramic sheet, and 7 is interior conducting strip, and 8 is bonded adhesives, and 9 is bottom end cover, and 10 is the groove of embedding PTC potsherd, and 11 is the through-flow mouth of aqueous solution of urea.
Detailed description of the invention
embodiment:
a preferred embodiment of aqueous solution of urea cleaner of the present invention as shown in Figure 1, comprise upper end cover 2, bottom end cover 9, and the central tube 4 be located between described two end cap, described central tube periphery is filter paper 5, described urea cleaner is also provided with heating arrangement, and described heating arrangement connects wire; Wherein, the outer conducting strip 3 outside the heating ceramic sheet 6 that the interior conducting strip 7 centered by heating arrangement inside pipe, central tube are embedded and central tube, and described interior conducting strip 7, bonded to each other between heating ceramic sheet 6 and outer conducting strip 7, bottom is drawn by wire.
a preferred center tubular construction embodiment of urea cleaner of the present invention as shown in Figure 2, Fig. 3 is the A-A sectional view of Fig. 2.Central tube 4 is skeleton mechanism, which is provided with the groove 10 that can embed 4 PTC heating ceramic sheets.Heat generating ceramic sheet 6 is embedded in central tube 4 urea liquid is through-flow mouth, outer conducting strip 3 and interior conducting strip 7 are thin slice rectangle structure aluminium, and fitting with potsherd connects, and outer conducting strip is connected with positive source, interior conducting strip wire picks out, and is connected with the negative pole of power supply.
central tube 4, for supporting filter medium, adopting the embedded heating plate 7 of plastic tube, PTC heating ceramic sheet 6 structure, by powering up, heating surrounding enviroment.By the selection of the Curie temperature to PTC, the maximum temperature of PTC heating plate is set in 25 DEG C, ensure that the operating ambient temperature of aqueous solution of urea cleaner.When engine operation, power supply powers up, and inside and outside conducting strip and the conducting of heating ceramic sheet, guarantee that the operating temperature of aqueous solution of urea is not less than 25 DEG C, prevent aqueous solution of urea from there will be the physical phenomenons such as crystallization, affect the efficiency of whole exhaust treatment system.
filter paper is the filter urea aqueous solution mainly, and star structure after filter material employing folded filter paper, increases filter area.Upper end cover 2 with O type circle sealing ring 1, for upper end cover, pump chamber combination seal.Upper end cover 2 is limited location effect in pump chamber; The groove limited location effect of bottom end cover 9.
certainly, above-described embodiment, only for technical conceive of the present invention and feature are described, its object is to people can be understood content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalent transformations of doing according to the Spirit Essence of main technical schemes of the present invention or modification, all should be encompassed within protection scope of the present invention.
Claims (3)
1. aqueous solution of urea cleaner, comprises upper end cover, bottom end cover, and is located at the central tube between described two end cap, and described central tube periphery is filter paper, it is characterized in that, described urea cleaner is also provided with heating arrangement, and described heating arrangement connects wire;
Embedded constant temperature sheet is managed centered by described heating arrangement;
Or described heating arrangement is the embedded constant temperature sheet of interior conducting strip inside described central tube and central tube, and described interior conducting strip and the laminating of described constant temperature sheet;
Or described heating arrangement is the embedded constant temperature sheet of outer conducting strip outside described central tube and central tube, and described outer conducting strip and the laminating of described constant temperature sheet;
Or described heating arrangement is the outer conducting strip outside the embedded constant temperature sheet of interior conducting strip inside described central tube, central tube and central tube, and described interior conducting strip, bonded to each other between constant temperature sheet and outer conducting strip; Described bottom end cover has groove and coordinates with the boss of pump chamber;
Described upper end cover is provided with for the O RunddichtringO by upper end cover, pump chamber combination seal.
2. aqueous solution of urea cleaner according to claim 1, is characterized in that, described constant temperature sheet is PTC heating ceramic sheet, and described interior conducting strip, outer conducting strip are sheet metal structure.
3. aqueous solution of urea cleaner according to claim 1, is characterized in that, described filter paper is star folded filter paper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210209497.9A CN102698482B (en) | 2012-06-25 | 2012-06-25 | Aqueous urea filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210209497.9A CN102698482B (en) | 2012-06-25 | 2012-06-25 | Aqueous urea filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102698482A CN102698482A (en) | 2012-10-03 |
| CN102698482B true CN102698482B (en) | 2014-12-24 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210209497.9A Active CN102698482B (en) | 2012-06-25 | 2012-06-25 | Aqueous urea filter |
Country Status (1)
| Country | Link |
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| CN (1) | CN102698482B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN209539475U (en) * | 2018-11-20 | 2019-10-25 | 苏州科瓴精密机械科技有限公司 | Air cleaner, petrol engine and garden instrument |
| CN110433562A (en) * | 2019-09-04 | 2019-11-12 | 合肥威尔燃油系统股份有限公司 | A kind of urea filter with cooling water heating |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE59910583D1 (en) * | 1999-03-18 | 2004-10-28 | David & Baader Dbk Spezfab | Heating device for diesel fuel and heated diesel filter system |
| CN101024132A (en) * | 2007-01-06 | 2007-08-29 | 奥凯嘉集团有限公司 | Filter core |
| CN102493897B (en) * | 2011-12-05 | 2013-06-05 | 高志男 | Heating device in fuel filter of diesel vehicle |
| CN102536397A (en) * | 2012-02-24 | 2012-07-04 | 扬州宇丰环保科技有限公司 | Urea supply device for vehicular SCR (selective catalytic reduction) system |
| CN202654775U (en) * | 2012-06-25 | 2013-01-09 | 苏州工业园区达菲特过滤技术有限公司 | Urea water solution filter |
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2012
- 2012-06-25 CN CN201210209497.9A patent/CN102698482B/en active Active
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| CN102698482A (en) | 2012-10-03 |
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| C14 | Grant of patent or utility model | ||
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| C56 | Change in the name or address of the patentee |
Owner name: SUZHOU DIFITE (SIP) CO., LTD. Free format text: FORMER NAME: SUZHOU INDUSTRIAL PARK, DIFITE CO., LTD. |
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| CP03 | Change of name, title or address |
Address after: 215123, No. 22, Sheng Sheng Road, Sheng Town, Suzhou Industrial Park, Jiangsu Patentee after: Suzhou Duffett Filtration Technology Co.,Ltd. Address before: 22 No. 215126 Sheng Road, Suzhou Industrial Park, Jiangsu, China Patentee before: Suzhou Industrial Park Duffett Filtration Technology Co.,Ltd. |
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| TR01 | Transfer of patent right |
Effective date of registration: 20201028 Address after: 223900 north of Ningzhong road and west of jingsan Road, Sihong Economic Development Zone, Sihong County, Suqian City, Jiangsu Province Patentee after: Jiangsu dafiter Technology Co.,Ltd. Address before: 215123, No. 22, Sheng Sheng Road, Sheng Town, Suzhou Industrial Park, Jiangsu Patentee before: Suzhou Duffett Filtration Technology Co.,Ltd. |
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| TR01 | Transfer of patent right |
Effective date of registration: 20230830 Address after: No. 22, Tongsheng Road, Shengpu Town, Suzhou Industrial Park, Jiangsu Province, 215000 Patentee after: Suzhou Duffett Filtration Technology Co.,Ltd. Address before: 223900 north side of Ningzhong Road, west side of jingsan Road, machinery manufacturing industrial park, Sihong Economic Development Zone, Sihong County, Suqian City, Jiangsu Province Patentee before: Jiangsu dafiter Technology Co.,Ltd. |
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| TR01 | Transfer of patent right |