CN216366864U - Filter screen assembly structure of urea sensor - Google Patents
Filter screen assembly structure of urea sensor Download PDFInfo
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- CN216366864U CN216366864U CN202122675417.6U CN202122675417U CN216366864U CN 216366864 U CN216366864 U CN 216366864U CN 202122675417 U CN202122675417 U CN 202122675417U CN 216366864 U CN216366864 U CN 216366864U
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- urea sensor
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Abstract
The utility model discloses a filter screen assembly structure of a urea sensor, which comprises a framework, wherein the upper end surface of the framework is integrally connected with a top cover, the bottom end surface of the framework is integrally connected with a bottom cover, the bottom end surface of the bottom cover is fixedly connected with a bottom plate, the outer surface of the framework is provided with a plurality of filtering through openings, the inside of each filtering through opening is provided with a filtering mesh cloth, an annular mounting opening is arranged on one side of the upper end surface of the top cover, a fixed sleeve is arranged inside the annular mounting opening, the bottom end of the fixed sleeve is fixedly connected with a plurality of connecting strips, the bottom end surfaces of the connecting strips are fixedly connected with annular fixed blocks, an opening is formed between the adjacent connecting strips, the inner wall of the opening is fixedly provided with a fine filter screen, when in use, impurities are filtered twice through the filter screen cloth and the fine filter screen, and then can improve the filter effect to impurity, avoid impurity influence urea sensor's life.
Description
Technical Field
The utility model relates to the technical field of urea sensors, in particular to a filter screen assembling structure of a urea sensor.
Background
With the gradual implementation of the emission limit standards of heavy vehicle tail gas pollutants in the fifth and sixth stages in China, the requirement on the limit of emission NOx is increasingly strict, and a Selective Catalytic Reduction (SCR) route is also gradually a preferred scheme of various host plants, engine plants and aftertreatment suppliers. The SCR system works on the principle that under the action of a catalyst, a reducing agent NH3 selectively reduces NO and NO2 in engine exhaust to N2 at 290 ℃ and 400 ℃, so that the emission of NOx is reduced. The quality of urea used as a reducing agent in an SCR system directly affects the exhaust emission, and is more and more emphasized by people. At present, urea manufacturers in China are various, the urea quality is different, urea filling equipment is not popularized yet, the phenomenon of manual urea filling happens occasionally, and various impurities are easy to enter a urea box body in the urea filling link to influence the urea quality, so that the phenomena of over-standard emission, catalyst failure and the like are caused.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to a filter screen assembly structure of a urea sensor, so as to solve the problems of the related art.
In order to achieve the purpose, the utility model provides the following technical scheme:
the utility model provides a urea sensor's filter screen package assembly, includes the skeleton, the up end integration of skeleton is connected with the top cap, the bottom face integration of skeleton is connected with the bottom, the bottom face fixedly connected with bottom plate of bottom, the surface of skeleton is provided with a plurality of filtration openings, and the internally mounted that filters the opening has the filter screen cloth, annular installing port has been seted up to up end one side of top cap, and the inside of annular installing port is provided with fixed cover, a plurality of connection slats of bottom fixedly connected with of fixed cover, the bottom face fixedly connected with annular fixed block of connecting the slat is formed with the opening between the adjacent connection slat, and open-ended inner wall fixed mounting has meticulous filter screen.
Preferably, the upper and lower sides of the annular inner wall of the fixing sleeve are respectively provided with a pressing ring and a sealing ring, and the pressing ring is clamped in the fixing sleeve.
Preferably, the framework, the top cover, the bottom cover and the bottom plate are all in a fan-shaped structure.
Preferably, a reinforcing block is fixedly connected between the adjacent connecting laths.
Preferably, the fixed sleeve is fixedly bonded with an annular mounting opening formed in the upper end face of the top cover through glue.
Preferably, the framework, the top cover, the bottom plate, the fixing sleeve, the connecting batten, the reinforcing block and the annular fixing block are all formed by plastic injection molding.
Compared with the prior art, the utility model has the beneficial effects that: the structure is convenient to use, and impurities are filtered twice through the filter screen cloth and the fine filter screen, so that the filtering effect on the impurities can be improved, and the influence of the impurities on the service life of the urea sensor is avoided; the sealing ring can be positioned by the pressing ring, and the sealing property when the pipeline is connected can be improved by the sealing ring; the fan-shaped structure can improve the filtering area of the structure.
Drawings
FIG. 1 is a schematic perspective view of a filter screen assembly structure of a urea sensor;
FIG. 2 is a schematic sectional view of a main body structure of a filter screen assembling structure of a urea sensor;
fig. 3 is a schematic view of a connection structure of a fixing sleeve and an annular fixing block of a filter screen assembly structure of a urea sensor.
In the figure: 1-bottom plate, 2-bottom cover, 3-filter screen cloth, 4-top cover, 5-sealing ring, 6-pressing ring, 7-fixing sleeve, 8-annular fixing block, 9-reinforcing block, 10-connecting strip plate, 11-fine filter screen and 12-framework.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 3, the present invention provides a technical solution: the utility model provides a urea sensor's filter screen package assembly, includes skeleton 12, the up end integration of skeleton 12 is connected with top cap 4, the bottom face integration of skeleton 12 is connected with bottom 2, the bottom face fixedly connected with bottom plate 1 of bottom 2, the surface of skeleton 12 is provided with a plurality of filtration openings, and the internally mounted who filters the opening has filter screen cloth 3, annular installing port has been seted up to top cap 4's up end one side, and the inside of annular installing port is provided with fixed cover 7, a plurality of connection slats 10 of bottom fixedly connected with of fixed cover 7, the bottom face fixedly connected with annular fixed block 8 of connecting slat 10 is formed with the opening between the adjacent connection slat 10, and open-ended inner wall fixed mounting has meticulous filter screen 11.
During the use, arrange skeleton 12 in the urea case, liquid enters into the inside of skeleton 12 behind filter screen cloth 3 to carry out prefilter to liquid, later liquid enters into the cavity that a plurality of connection slats 10 enclose after meticulous filter screen 11 filters once more inside, liquid enters into the urea sensor at last, at this in-process, impurity filters through filter screen cloth 3 and meticulous filter screen 11 twice, and then can improve the filter effect to impurity, avoids impurity to influence the life of urea sensor.
The upper and lower sides of the annular inner wall of the fixed sleeve 7 are respectively provided with a pressing ring 6 and a sealing ring 5, and the pressing ring 6 is clamped inside the fixed sleeve 7.
Can fix a position sealing washer 5 through clamping ring 6, can improve the leakproofness when connecting the pipeline through sealing washer 5.
The framework 12, the top cover 4, the bottom cover 2 and the bottom plate 1 are all fan-shaped structures, and the fan-shaped structures can improve the filtering area of the structure.
All fixedly connected with boss 9 between the adjacent connection slat 10, can improve the intensity of connecting the slat 10 through a plurality of bosses 9.
The fixed sleeve 7 is fixedly bonded with an annular mounting opening formed in the upper end face of the top cover 4 through glue.
The framework 12, the top cover 4, the bottom cover 2, the bottom plate 1, the fixing sleeve 7, the connecting strip plate 10, the reinforcing block 9 and the annular fixing block 8 are all formed by plastic injection molding.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (6)
1. The utility model provides a filter screen package assembly of urea sensor, includes skeleton (12), its characterized in that: the up end integration of skeleton (12) is connected with top cap (4), the bottom face integration of skeleton (12) is connected with bottom (2), the bottom face fixedly connected with bottom plate (1) of bottom (2), the surface of skeleton (12) is provided with a plurality of filtration openings, and the internally mounted that filters the opening has filter screen cloth (3), the annular installing port has been seted up to the up end one side of top cap (4), and the inside of annular installing port is provided with fixed cover (7), a plurality of connection slat (10) of bottom fixedly connected with of fixed cover (7), the bottom face fixedly connected with annular fixed block (8) of connecting slat (10), be formed with the opening between adjacent connection slat (10), open-ended inner wall fixed mounting has meticulous filter screen (11).
2. The filter screen assembling structure of a urea sensor according to claim 1, wherein: the upper and lower sides of the annular inner wall of the fixed sleeve (7) are respectively provided with a pressing ring (6) and a sealing ring (5), and the pressing ring (6) is clamped inside the fixed sleeve (7).
3. The filter screen assembling structure of a urea sensor according to claim 2, wherein: the framework (12), the top cover (4), the bottom cover (2) and the bottom plate (1) are all of fan-shaped structures.
4. The filter screen assembling structure of a urea sensor according to claim 3, wherein: reinforcing blocks (9) are fixedly connected between the adjacent connecting laths (10).
5. The filter screen assembling structure of a urea sensor according to claim 4, wherein: the fixed sleeve (7) is fixedly bonded with an annular mounting opening formed in the upper end face of the top cover (4) through glue.
6. The filter screen assembling structure of a urea sensor according to claim 5, wherein: the plastic injection molding machine is characterized in that the framework (12), the top cover (4), the bottom cover (2), the bottom plate (1), the fixing sleeve (7), the connecting strip plate (10), the reinforcing block (9) and the annular fixing block (8) are all formed by plastic injection molding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122675417.6U CN216366864U (en) | 2021-11-02 | 2021-11-02 | Filter screen assembly structure of urea sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122675417.6U CN216366864U (en) | 2021-11-02 | 2021-11-02 | Filter screen assembly structure of urea sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216366864U true CN216366864U (en) | 2022-04-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122675417.6U Active CN216366864U (en) | 2021-11-02 | 2021-11-02 | Filter screen assembly structure of urea sensor |
Country Status (1)
| Country | Link |
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| CN (1) | CN216366864U (en) |
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2021
- 2021-11-02 CN CN202122675417.6U patent/CN216366864U/en active Active
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