CN212406863U - Novel urea filter with pressure release capacity - Google Patents
Novel urea filter with pressure release capacity Download PDFInfo
- Publication number
- CN212406863U CN212406863U CN202020574622.6U CN202020574622U CN212406863U CN 212406863 U CN212406863 U CN 212406863U CN 202020574622 U CN202020574622 U CN 202020574622U CN 212406863 U CN212406863 U CN 212406863U
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- CN
- China
- Prior art keywords
- filter
- sealing ring
- urea
- valve
- pressure relief
- 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.)
- Expired - Fee Related
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- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 title claims abstract description 60
- 239000004202 carbamide Substances 0.000 title claims abstract description 60
- 238000007789 sealing Methods 0.000 claims description 36
- 239000007788 liquid Substances 0.000 abstract description 13
- 238000000034 method Methods 0.000 abstract description 7
- 238000013461 design Methods 0.000 abstract description 5
- 230000008859 change Effects 0.000 abstract description 2
- 125000006850 spacer group Chemical group 0.000 abstract 2
- 239000000243 solution Substances 0.000 description 19
- 230000008878 coupling Effects 0.000 description 6
- 238000010168 coupling process Methods 0.000 description 6
- 238000005859 coupling reaction Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010531 catalytic reduction reaction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Landscapes
- Exhaust Gas After Treatment (AREA)
Abstract
The utility model relates to a urea filter technical field just discloses a novel urea filter with pressure release ability, connect and the casing including the filter, the inside fixed mounting in top of casing has the spacer, and the upper end fixed mounting of spacer has reverse stop valve spring, and reverse stop valve spring's intermediate position is provided with reverse case. The utility model discloses in, increase flow and pressure sensor at liquid return pipeline, detect filter operating condition and can in time remind operating personnel to wash or change the filter core, thereby guarantee aftertreatment system's steady job and reduced the risk that the pipeline freezes and splits, existing device on the market at present is that directly filters automobile exhaust, and this design is at exhaust aftertreatment system pipeline in-process interpolation filter, filter through the urea solution to in the pipeline, thereby prolong exhaust aftertreatment system's life. Meanwhile, in order to ensure the working stability of the aftertreatment system, a pressure relief valve is added at the pipeline filter.
Description
Technical Field
The utility model relates to a urea filter technical field especially relates to a novel urea filter with pressure release ability.
Background
With the rapid development of the automobile industry in China, the air pollution is more and more serious, and the emission regulations are more and more strict. In order to adapt to the development of society, various automobile manufacturers in China mostly adopt a Selective Catalytic Reduction (SCR) exhaust aftertreatment control technology to reduce the emission of harmful substances in the engine exhaust so as to meet the emission requirement.
The consumables that must use in the SCR technique at present are automobile-used urea solution, and when the automobile-used urea solution purity of selecting for use is not enough, have impurity such as particulate matter, heavy metal ion to exist, can cause parts such as the nozzle of vehicle SCR system, filter seriously to harm, bring unnecessary economic loss. Especially, the application environments of commercial vehicles, engineering machinery and agricultural machinery are relatively severe, and the quality of the urea solution needs to be ensured to meet the requirements of post-treatment.
Therefore, part of automobile manufacturers select to apply a filter in a urea liquid inlet pipe structure from a urea box to a urea pump, and control over the quality of the urea solution is enhanced from the front end of the aftertreatment system so as to ensure the quality of the urea solution applied to the SCR aftertreatment system. However, the filter used in the industry at present has the defects of complex structure, difficult disassembly and assembly, limited application range and the like. Meanwhile, after part of the urea post-treatment system stops working, the urea liquid inlet pipe is not emptied, and the urea solution can be crystallized in a low-temperature environment to cause volume expansion, so that the risk of frost cracking of the urea liquid inlet pipeline is caused. Therefore how to design and make a structure simple relatively, easy dismounting, extensive applicability is extensive and have the filter of pressure release ability simultaneously, is the ubiquitous technical problem of industry.
SUMMERY OF THE UTILITY MODEL
The utility model discloses solve the technical problem that above-mentioned prior art exists, provide a novel urea filter with pressure release ability.
In order to achieve the purpose, the utility model adopts the technical proposal that a novel urea filter with pressure relief capacity comprises a filter joint and a shell, a positioning sheet is fixedly arranged inside the upper part of the shell, a reverse stop valve spring is fixedly arranged at the upper end of the positioning sheet, a reverse valve core is arranged at the middle position of the reverse stop valve spring, a reverse stop valve is fixedly arranged at the upper end of the reverse valve core, a safety valve is arranged on the left side inside the shell, a manual rod is fixedly arranged on the left side of the safety valve, the excircle of the manual lever is sleeved with an internal sealing ring, the excircle of the middle position of the manual lever is sleeved with a pressure adjusting disc, the excircle of the manual lever is sleeved with a safety valve spring, the left end of the manual lever is provided with a rivet, the handle is fixedly mounted on the left side of the upper end of the shell, and a safety screw is arranged on the left end face of the handle.
The filter is characterized in that a sealing ring is fixedly mounted below the filter joint, a pressure release valve is fixedly mounted below the sealing ring, a second sealing ring is fixedly mounted below the sealing ring, and a filter connecting nut is fixedly mounted at the excircle of the second sealing ring.
Preferably, a third sealing ring is fixedly mounted below the filter connecting nut, a filter element is fixedly mounted below the third sealing ring, a filter shell is fixedly mounted below the filter element, and a gasket is fixedly mounted below the filter shell.
Preferably, the filter joint and the pressure relief valve, the pressure relief valve and the filter connection nut, the filter connection nut and the filter element, and the filter housing and the filter connection nut are all connected by using a threaded structure.
Preferably, the filter cartridge and the filter coupling nut use a quick-connect connection.
Preferably, the filter element and the filter joint are in a structure that a flange is matched with a sealing ring for use.
Advantageous effects
The utility model provides a novel urea filter with pressure release ability. The method has the following beneficial effects:
(1) this novel urea filter with pressure release capacity, this design increases the relief valve, increase flow and pressure sensor at liquid return pipeline, detect filter operating condition and can in time remind operating personnel to wash or change the filter core, thereby guarantee aftertreatment system's stable work and reduced the risk that the pipeline freezes and splits, the device that has on the market at present is that direct automobile exhaust filters, and this design is at the exhaust aftertreatment system pipeline in-process interpolation filter, filter through the urea solution to in the pipeline, thereby prolong exhaust aftertreatment system's life. Meanwhile, in order to ensure the working stability of the aftertreatment system, a pressure relief valve is added at the pipeline filter.
(2) This novel urea filter with pressure release ability, filter core and filter coupling nut pass through the helicitic texture and realize being connected, in time washs or changes the filter core in making things convenient for the later stage use. Meanwhile, besides the connection by using threads, the quick plug connection by using a snap spring and the connection by using a flange structure can also be used.
(3) This novel urea filter with pressure release ability adopts integral type structural design to filter housing, makes its accessible simple operation, can realize the quick connector product of two kinds of different specifications of this company of adaptation simultaneously, has increased the suitability of filter.
Drawings
FIG. 1 is a schematic diagram of the application of the filter of the present invention to an exhaust gas aftertreatment system;
FIG. 2 is a schematic view of the filter of the present invention;
FIG. 3 is a schematic view of the structure of the pressure release valve of the present invention;
FIG. 4 is a schematic view of the filter cartridge and filter coupling nut assembly of the present invention;
FIG. 5 is a schematic view of the filter housing according to the present invention;
FIG. 6 is a schematic view of the filter cartridge and filter coupling nut assembly of the present invention;
FIG. 7 is a schematic view of the filter coupling nut of the present invention;
FIG. 8 is a schematic view of the connection between the filter connection nut and the filter insert of the present invention;
fig. 9 is an external view of the filter coupling nut of the present invention.
Illustration of the drawings:
in the figure, 1 shell, 2 positioning sheets, 3 reverse stop valve springs, 4 reverse valve cores, 5 reverse stop valves, 6 safety valves, 7 manual rods, 8 internal sealing rings, 9 pressure adjusting discs, 10 safety valve springs, 11 rivets, 12 handles, 13 safety screws, 010 filter joints, 020 sealing rings, 030 pressure relief valves, 040 second sealing rings, 050 filter connecting screw caps, 060 third sealing rings, 070 filter cartridges, 080 filter shells and 090 gaskets.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.
Example (b): a new urea filter with pressure relief capability, as shown in fig. 1-9, comprises a filter joint 010 and a housing 1.
The automatic check valve is characterized in that a positioning piece 2 is fixedly mounted inside the upper portion of the shell 1, a reverse stop valve spring 3 is fixedly mounted at the upper end of the positioning piece 2, a reverse valve core 4 is arranged in the middle of the reverse stop valve spring 3, a reverse stop valve 5 is fixedly mounted at the upper end of the reverse valve core 4, a safety valve 6 is arranged on the left side inside the shell 1, a manual rod 7 is fixedly mounted on the left side of the safety valve 6, an inner sealing ring 8 is sleeved at the excircle of the manual rod 7, a pressure adjusting disc 9 is sleeved at the excircle of the middle position of the manual rod 7, a safety valve spring 10 is sleeved at the excircle of the manual rod 7, a rivet 11 is arranged at the left end of the manual rod 7, a handle 12 is fixedly mounted on the left side of the upper end of the shell 1, and.
The filter joint 010 is fixedly provided with a sealing ring 020 below, the sealing ring 020 is fixedly provided with a pressure release valve 030 below, the sealing ring 020 is fixedly provided with a second sealing ring 040 below, the outer circle of the second sealing ring 040 is fixedly provided with a filter connecting nut 050 below, the filter connecting nut 050 is fixedly provided with a third sealing ring 060 below, the filter element 070 is fixedly provided below the third sealing ring 060, the filter housing 080 is fixedly provided below the filter element 070, and the gasket 090 is fixedly provided below the filter housing 080.
When the urea solution flows from the urea box to the urea pump through the urea liquid inlet pipe, the filter starts to work. When the pressure of the urea liquid inlet pipeline exceeds the rated pressure set by the pressure release valve 030 when the filter is blocked, the pressure release valve 030 can automatically discharge the over-high pressure through the discharge port to ensure the normal work of the whole urea liquid inlet pipeline, and at the moment, the urea solution can flow back to the urea box through the pressure release return pipeline.
In the whole filter structure, the filter joint 010 and the pressure relief valve 030, the pressure relief valve 030 and the filter connecting nut 050, the filter connecting nut 050 and the filter cartridge 070, and the filter housing 080 and the filter connecting nut 050 are connected by using thread structures, so that the filter is easy and convenient to disassemble and assemble. Simultaneously, for the leakproofness of guaranteeing whole structure, use sealing washer 020 to seal the junction in order to guarantee that the filter does not leak liquid in the course of the work.
The filter cartridge 070 and the filter connecting nut 050 use a quick-insertion connecting structure, so that the structure of the filter cartridge 070 is simplified, the processing technology of the filter cartridge 070 is simplified, and meanwhile, the dismounting process of the filter cartridge 070 is simpler and more convenient.
Make filter cartridge 070 adopt similar filter joint 010 to use the interference fit structure that flange and sealing washer 020 cooperation were used to guarantee the leakproofness of filter cartridge 070 and the assembly of filter connection nut 050.
The structure of the filter shell 080 is optimized, so that the filter shell 080 can be used for widening the application range of the filter through simple operation and is simultaneously adapted to two types of quick connectors of the company.
The utility model discloses a theory of operation:
when the automobile exhaust after-treatment system starts to work, urea solution enters the urea pump through the urea liquid inlet pipe and is conveyed to the urea nozzle end through the urea injection pipe by the urea pump, so that the effect of treating exhaust is achieved. As shown in the figure, a pressure relief valve and a filter are installed on a urea liquid inlet pipeline to filter urea solution, when the filter is blocked or needs to be cleaned, the pressure in the pipeline is higher than normal working pressure, a pressure relief opening in the pressure relief valve is communicated, and the urea solution flows back to a urea box. Not only maintains the stability of pressure in the whole post-treatment working process, but also ensures the quality of the urea solution in the system, thereby prolonging the service life of the post-treatment system components.
The filter joint 010 is connected with the pressure release valve 030 through a thread structure, and is sealed through a sealing ring 020; the filter connecting nut 050 is connected with the pressure release valve 030 through a thread structure, and is sealed through a second sealing ring 040; the filter connecting nut 050 is connected with the filter cartridge 070 through a thread structure; the filter housing 080 and the filter connection nut 050 are connected by a screw structure and sealed by a third seal ring 060. The gasket 090 is used for preventing the filter cartridge 070 from moving during the connection process with the filter connection nut 050, so that the hole of the filter housing 080 is closed, and the urea solution cannot normally flow. The threaded structure is adopted for connection so as to ensure that each part is convenient to detach and replace. The purpose of using the seal ring 020, the second seal ring 040, and the third seal ring 060 is to ensure the sealing performance of the entire filter structure and to prevent the occurrence of a liquid leakage phenomenon.
When the pressure in the pipeline is within a certain working pressure range, the force of the urea solution acting on the reverse stop valve 5 is smaller than the force of the safety spring 10 on the safety valve 6, and the difference between the two forces forms the sealing force between the valve clack and the valve seat, so that the safety spring 10 tightly presses the safety valve 6, and the urea solution in the pipeline cannot be discharged from the discharge port. At the moment, the force on the 5-direction stop valve is larger than the force on the 3-direction stop valve due to the reverse pressure of the spring, and the urea solution in the valve directly flows out of the liquid outlet. When the pressure in the pipeline exceeds the specified working pressure and reaches the opening pressure of the pressure release valve, the force of the urea solution acting on the reverse stop valve 5 is greater than the force of the safety spring 10 added on the safety valve 6, then the safety valve 6 tightly presses the safety valve spring 10, the pressure release valve is opened, and the urea solution in the pipeline is discharged to the urea box through the pressure release port. If the discharge capacity of the pressure relief valve is larger than the safe discharge capacity of the pipeline, the pressure in the pipeline is gradually reduced, and after short-time exhaust, the pressure is reduced to the normal working pressure. At the moment, the force of the internal pressure acting on the reverse stop valve 5 is smaller than the force of the loading mechanism acting on the safety valve 6, and the pipeline keeps normal working pressure to continue to operate.
The filter shell and the connecting joint are designed into an integrated structure, so that the number of assembling parts is reduced. Meanwhile, the connector structure is changed, so that the filter is simultaneously adapted to two quick connector products with different specifications of the company.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. A novel urea filter with pressure release capability, including filter joint (010) and casing (1), its characterized in that: a positioning sheet (2) is fixedly installed inside the upper portion of the shell (1), a reverse stop valve spring (3) is fixedly installed at the upper end of the positioning sheet (2), a reverse valve core (4) is arranged in the middle of the reverse stop valve spring (3), a reverse stop valve (5) is fixedly installed at the upper end of the reverse valve core (4), a safety valve (6) is arranged on the left side of the inside of the shell (1), a manual rod (7) is fixedly installed on the left side of the safety valve (6), an inner sealing ring (8) is sleeved at the excircle of the manual rod (7), a pressure adjusting disc (9) is sleeved at the excircle of the middle of the manual rod (7), and a safety valve spring (10) is sleeved at the excircle of the manual rod (7);
the filter is characterized in that a sealing ring (020) is fixedly arranged below the filter joint (010), a pressure release valve (030) is fixedly arranged below the sealing ring (020), a second sealing ring (040) is fixedly arranged below the sealing ring (020), and a filter connecting nut (050) is fixedly arranged at the excircle of the second sealing ring (040).
2. The novel urea filter with pressure relief capability of claim 1, wherein: and a third sealing ring (060) is fixedly arranged below the filter connecting nut (050), and a filter cartridge (070) is fixedly arranged below the third sealing ring (060).
3. The new urea filter with pressure relief capability of claim 2, wherein: a filter shell (080) is fixedly arranged below the filter cartridge (070), and a gasket (090) is fixedly arranged below the filter shell (080).
4. The novel urea filter with pressure relief capability of claim 1, wherein: the filter joint (010) and the pressure relief valve (030), the pressure relief valve (030) and the filter connecting nut (050), the filter connecting nut (050) and the filter cartridge (070), and the filter housing (080) and the filter connecting nut (050) are connected through thread structures.
5. The new urea filter with pressure relief capability of claim 2, wherein: the filter cartridge (070) and the filter connection nut (050) use a quick-plug connection structure.
6. The new urea filter with pressure relief capability of claim 2, wherein: the filter cartridge (070) and the filter joint (010) adopt a structure that a flange is matched with a sealing ring (020).
7. The novel urea filter with pressure relief capability of claim 1, wherein: the left end of the manual rod (7) is provided with a rivet (11), the left side of the upper end of the shell (1) is fixedly provided with a handle (12), and the left end face of the handle (12) is provided with a safety screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020574622.6U CN212406863U (en) | 2020-04-17 | 2020-04-17 | Novel urea filter with pressure release capacity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020574622.6U CN212406863U (en) | 2020-04-17 | 2020-04-17 | Novel urea filter with pressure release capacity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212406863U true CN212406863U (en) | 2021-01-26 |
Family
ID=74369213
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020574622.6U Expired - Fee Related CN212406863U (en) | 2020-04-17 | 2020-04-17 | Novel urea filter with pressure release capacity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212406863U (en) |
-
2020
- 2020-04-17 CN CN202020574622.6U patent/CN212406863U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210126 |
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| CF01 | Termination of patent right due to non-payment of annual fee |