CN202654775U - Urea water solution filter - Google Patents
Urea water solution filter Download PDFInfo
- Publication number
- CN202654775U CN202654775U CN 201220297913 CN201220297913U CN202654775U CN 202654775 U CN202654775 U CN 202654775U CN 201220297913 CN201220297913 CN 201220297913 CN 201220297913 U CN201220297913 U CN 201220297913U CN 202654775 U CN202654775 U CN 202654775U
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- China
- Prior art keywords
- conducting strip
- central tube
- aqueous solution
- urea
- sheet
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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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- Filtering Of Dispersed Particles In Gases (AREA)
- Filtration Of Liquid (AREA)
- Filtering Materials (AREA)
Abstract
The utility model discloses a urea water solution filter which comprises an upper end cover, a lower end cover, and a center pipe arranged between two end covers, wherein the filter paper is arranged outside the circumference of the center pipe. The urea water solution filter is also provided with a heating structure which is connected with a lead, wherein the heating structure comprises an internal heat conduction sheet arranged on the inner side of the center pipe, a constant-temperature sheet embedded into the center pipe and an external heat conduction sheet arranged on the outer side of the center pipe, and the internal heat conduction sheet, the constant-temperature sheet and the external heat conduction sheet are mutually attached. According to the urea water solution filter, in order to ensure that the temperature of a urea water solution is a reliable working temperature, a PTC (Positive Temperature Coefficient) ceramic sheet is embedded onto the framework type center pipe, and through the heating of the electronic heating conduction sheets, the environment temperature of working of the urea water solution filter is kept above 25 DEG C. When the requirement of filtering efficiency of the urea water solution is completely met, the flow capacity of the filter is avoided from being influenced by overlow environment temperature, so that the whole tail gas treatment system is increased in efficiency.
Description
Technical field
The utility model relates to a kind of auto parts and components, especially relates to a kind of automobile exhaust gas processing apparatus, is specifically related to a kind of aqueous solution of urea cleaner.
Background technology
In the motor vehicles state IV, the state's V discharge standard that are about to implement, diesel engine more harsh toxic emission and energy-conservation requirement have been proposed, in order to reach state's IV, state's V discharge standard, can pass through SCR(Selective Catalytic Reduction Technology SCR) the nitride NOX of Techniques For Reducing engine discharging.The SCR system comprises urea tank (loading the diesel engine vent gas treatment fluid), SCR catalytic reactor.The running of SCR system is: when in finding blast pipe nitrogen oxide being arranged, urea tank sprays the diesel engine vent gas treatment fluid automatically, redox reaction occurs in diesel engine vent gas treatment fluid and nitrogen oxide in the SCR catalytic reactor, generate free of contamination nitrogen and steam and discharge.In whole SCR exhaust treatment system, diesel engine vent gas treatment fluid (domestic be commonly called as into: automobile urea, automobile-used urea, automobile environment-protection urea) is the running stores that must use in the SCR technology.
In the SCR system to vent gas treatment, urea is the indispensable material that participates in reaction, and very high to the nozzle required precision of aqueous solution of urea being carried out atomized spray.Owing to during low temperature, therefore the high easily crystallization of concentration of aqueous solution of urea is difficult for atomized spray, for the cleaning that guarantees aqueous solution of urea reaches best result of use under preference temperature, therefore the urea cleaner being installed.
Existing aqueous solution of urea cleaner generally adopts the built-in scheme of pump chamber, mostly adopts the cleaner structure of wound form or the structural design of star-like paper folding in the filter design.But the aqueous solution of urea temperature has reduced the circulation of aqueous solution of urea less than occurring the phenomenon such as crystallization after 11 ℃, has increased aqueous solution of urea by the cleaner circulating resistance.
Summary of the invention
Technical problem to be solved in the utility model is to overcome the defective that aqueous solution of urea in the existing urea cleaner is prone to crystallization, and a kind of embedded aqueous solution of urea cleaner structure is provided, and guarantees the effect of using under the cleaning of aqueous solution of urea and the low temperature condition.
In order to solve the problems of the technologies described above, the technical solution of the utility model is: the aqueous solution of urea cleaner, and comprise upper end cover, bottom end cover, and be located at the central tube between the described two end cap, described central tube periphery is filter paper,
It is characterized in that, described urea cleaner also is provided with heating arrangement, and described heating arrangement connects wire.
Preferably, described heating arrangement is the outer conducting strip in the embedded constant temperature sheet of the interior conducting strip of described central tube inboard or central tube or the central tube outside.
Preferably, described heating arrangement is interior conducting strip and the embedded constant temperature sheet of central tube of described central tube inboard, and described interior conducting strip and the applying of described constant temperature sheet.
Preferably, described heating arrangement is outer conducting strip and the embedded constant temperature sheet of central tube in the described central tube outside, and described outer conducting strip and the applying of described potsherd.
Preferably, described heating arrangement is the outer conducting strip in the embedded constant temperature sheet of interior conducting strip, the central tube of described central tube inboard and the central tube outside, and bonded to each other between described interior conducting strip, constant temperature sheet and the 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 cooperates 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 with upper end cover, pump chamber combination seal.
The utility model has the advantages that:
Aqueous solution of urea cleaner of the present utility model for the temperature that guarantees aqueous solution of urea in reliable operating temperature, embedded PTC heating ceramic sheet at skeleton central tube, by the heating of electrons heat sheet, so that the environment temperature of aqueous solution of urea cleaner work remains on more than 25 ℃.When the filter efficiency that satisfies aqueous solution of urea fully requires, avoided because environment temperature is crossed the low through-current capability that affects cleaner, so that whole exhaust treatment system efficient increases.
In order to guarantee enough circulation areas of aqueous solution of urea, adopt star-like paper folding mode, and adopted skeleton central tube, increased filter area.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further described:
Fig. 1 is the utility model aqueous solution of urea cleaner one structural representation;
Fig. 2 is the center tube structure schematic diagram of the utility model aqueous solution of urea cleaner.
Fig. 3 is the A-A profile of Fig. 2.
Wherein: 1 is sealing ring, and 2 is upper end cover, and 3 is outer conducting strip, pipe centered by 4, and 5 be filter paper, and 6 be the heating ceramic sheet, and 7 be interior conducting strip, and 8 is bonded adhesives, and 9 is bottom end cover, and 10 is the grooves of embedding PTC potsherd, and 11 is the through-flow mouth of aqueous solution of urea.
The specific embodiment
Embodiment:
A preferred embodiment of aqueous solution of urea cleaner of the present utility model as shown in Figure 1, comprise upper end cover 2, bottom end cover 9, and be located at central tube 4 between the described two end cap, described central tube periphery is filter paper 5, described urea cleaner also is provided with heating arrangement, and described heating arrangement connects wire; Wherein, manage the outer conducting strip 3 in the embedded heating ceramic sheet 6 of inboard interior conducting strip 7, central tube and the central tube outside centered by the heating arrangement, and bonded to each other between described interior conducting strip 7, heating ceramic sheet 6 and the outer conducting strip 7, draw by wire the bottom.
A preferred center tubular construction embodiment of urea cleaner of the present utility model 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.Embed heating potsherd 6 during central tube 4 urea liquids are through-flow mouthful, outer conducting strip 3 and interior conducting strip 7 are thin slice rectangle structure aluminium, fit with potsherd and join, and outer conducting strip is connected with positive source, interior conducting strip picks out with wire, is connected with the negative pole of power supply.
Filter paper mainly is to filter aqueous solution of urea, and star structure behind the filter material employing folded filter paper increases filter area.Upper end cover 2 is used for and upper end cover, pump chamber combination seal with O type circle sealing ring 1.Upper end cover 2 is the limited location effect in pump chamber; The groove limited location effect of bottom end cover 9.
Certainly, above-described embodiment only is explanation technical conceive of the present utility model and characteristics, and its purpose is to allow people can understand content of the present utility model and implements according to this, can not limit protection domain of the present utility model with this.All equivalent transformation or modifications of doing according to the Spirit Essence of the utility model main technical schemes all should be encompassed within the protection domain of the present utility model.
Claims (9)
1. the aqueous solution of urea cleaner comprises upper end cover, bottom end cover, and is located at the central tube between the described two end cap, and described central tube periphery is filter paper, it is characterized in that, described urea cleaner also is provided with heating arrangement, and described heating arrangement connects wire.
2. aqueous solution of urea cleaner according to claim 1 is characterized in that, described heating arrangement is the outer conducting strip in the embedded constant temperature sheet of the interior conducting strip of described central tube inboard or central tube or the central tube outside.
3. aqueous solution of urea cleaner according to claim 1 is characterized in that, described heating arrangement is interior conducting strip and the embedded constant temperature sheet of central tube of described central tube inboard, and described interior conducting strip and the applying of described constant temperature sheet.
4. according to claim 1 described aqueous solution of urea cleaner, it is characterized in that, described heating arrangement is outer conducting strip and the embedded constant temperature sheet of central tube in the described central tube outside, and described outer conducting strip and the applying of described potsherd.
5. aqueous solution of urea cleaner according to claim 1, it is characterized in that, described heating arrangement is the outer conducting strip in the embedded constant temperature sheet of interior conducting strip, the central tube of described central tube inboard and the central tube outside, and bonded to each other between described interior conducting strip, constant temperature sheet and the outer conducting strip.
6. each described aqueous solution of urea cleaner is characterized in that according to claim 2-5, and described constant temperature sheet is PTC heating ceramic sheet, and described interior conducting strip, outer conducting strip are sheet metal structure.
7. aqueous solution of urea cleaner according to claim 1 is characterized in that, described bottom end cover has groove and cooperates with the boss of pump chamber.
8. aqueous solution of urea cleaner according to claim 1 is characterized in that, described filter paper is star folded filter paper.
9. aqueous solution of urea cleaner according to claim 1 is characterized in that, described upper end cover is provided with for the sealing ring with upper end cover, pump chamber combination seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220297913 CN202654775U (en) | 2012-06-25 | 2012-06-25 | Urea water solution filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220297913 CN202654775U (en) | 2012-06-25 | 2012-06-25 | Urea water solution filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202654775U true CN202654775U (en) | 2013-01-09 |
Family
ID=47449716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220297913 Expired - Fee Related CN202654775U (en) | 2012-06-25 | 2012-06-25 | Urea water solution filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202654775U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102698482A (en) * | 2012-06-25 | 2012-10-03 | 苏州工业园区达菲特过滤技术有限公司 | Aqueous urea filter |
-
2012
- 2012-06-25 CN CN 201220297913 patent/CN202654775U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102698482A (en) * | 2012-06-25 | 2012-10-03 | 苏州工业园区达菲特过滤技术有限公司 | Aqueous urea filter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130109 Termination date: 20150625 |
|
| EXPY | Termination of patent right or utility model |