CN217712730U - SCR urea pump with pressure release gasbag structure - Google Patents
SCR urea pump with pressure release gasbag structure Download PDFInfo
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- CN217712730U CN217712730U CN202221534847.4U CN202221534847U CN217712730U CN 217712730 U CN217712730 U CN 217712730U CN 202221534847 U CN202221534847 U CN 202221534847U CN 217712730 U CN217712730 U CN 217712730U
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- urea
- pump
- pressure relief
- pump body
- pressure
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Abstract
The utility model relates to a SCR urea pump with pressure release gasbag structure, including the pump body, set up at the pressure sensor on pump body top and set up the pressure release gasbag in the urea intracavity of the pump body, the pump body is the rectangle structure, and sensor mounting hole, the screw hole that is linked together with the urea chamber are seted up respectively at the upper and lower both ends of the pump body, the pressure release gasbag includes pressure release gasbag body and fixes the blank pressing in the ring shape of pressure release gasbag body bottom, through set up the pressure release gasbag in the urea intracavity, can provide bigger buffer space, avoids urea inflation extrusion force sensor to lead to pressure sensor impaired to pressure sensor has improved pressure sensor's life greatly, improves the reliability that SCR urea pump used.
Description
The technical field is as follows:
the utility model relates to a SCR urea pump technical field especially relates to a SCR urea pump with pressure release gasbag structure.
The background art comprises the following steps:
SCR system during operation urea has been full of whole space, and during the stop work, all liquid still remain in the pump body inside, can't get rid of, consequently can expand when ambient temperature urea under negative 11 ℃, lead to the internal pressure increase of pump, generally do not have buffering pressure release structure in the current pump body, can extrude the sensor body that sets up on the pump body after the urea inflation, influence its life.
The utility model has the following contents:
the utility model aims at prior art's defect, provide a structural design is reasonable, the assembly is simple, can provide the SCR urea pump that has pressure release gasbag structure in inflation space.
The utility model discloses a realize through following technical scheme: the utility model provides a SCR urea pump with pressure relief gasbag structure, includes the pump body, sets up at the pressure sensor on pump body top and sets up the pressure relief gasbag at the urea intracavity of the pump body, the pump body is the rectangle structure, and sensor mounting hole, the screw hole that is linked together with the urea chamber are seted up respectively to the upper and lower both ends of the pump body, and inlet, the liquid outlet that is linked together with the urea chamber are seted up respectively to the outer wall both sides of the pump body, the height that highly is less than the liquid outlet of inlet, pressure sensor's bottom is pegged graft and is in sensor mounting hole and sealing connection, the pressure relief gasbag sets up at the urea intracavity, and the screw crimping is passed through on the screw hole in pressure relief gasbag's bottom to form sealed pressure relief chamber.
In order to realize that the pressure release gasbag is sealed to be set up at the urea intracavity, the pressure release gasbag includes the pressure release gasbag body and fixes the blank pressing at the ring shape of pressure release gasbag body bottom, furtherly, the screw hole diameter is greater than the diameter in urea chamber and corresponding with the blank pressing diameter, the blank pressing crimping is between urea chamber bottom and screw, furtherly, in order to improve the leakproofness of pressure release gasbag, protection blank pressing not by the rotatory scratch of screw, is provided with the gasket between blank pressing and the screw.
In order to conveniently assemble the SCR system, a plurality of assembling threaded holes are uniformly formed in the upper end and the lower end of the pump body.
In order to reduce the volume of the locking part and ensure that the assembly plane of the bottom surface of the pump body has no protrusion, the screw is an inner hexagonal locking screw.
The utility model has the advantages that: through set up the pressure release gasbag in the urea intracavity, can provide bigger buffer space, avoid urea inflation extrusion force sensor to lead to pressure sensor impaired to pressure sensor's life has been improved greatly, the reliability of improving SCR urea pump use.
Description of the drawings:
fig. 1 is a schematic plan view of an SCR urea pump with a pressure relief air bag structure according to the present invention;
fig. 2 is a schematic plan view of the pump body of the present invention;
fig. 3 is a schematic plan view of the pressure relief airbag of the present invention;
fig. 4 is a schematic bottom view of the SCR urea pump with a pressure relief airbag structure according to the present invention;
fig. 5 is a schematic view of the SCR urea pump with a pressure relief airbag structure in a top view.
The specific implementation mode is as follows:
the following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and the protection scope of the present invention can be clearly and clearly defined.
As shown in fig. 1 and 2, the SCR urea pump with a pressure relief airbag structure includes a pump body 1, a pressure sensor 2 disposed at a top end of the pump body 1, and a pressure relief airbag 4 disposed in a urea cavity 11 of the pump body 1.
The pump body 1 is the rectangle structure, and sensor mounting hole 14, the screw hole 15 that is linked together with urea chamber 11 are seted up respectively at the upper and lower both ends of the pump body 1, and inlet 12, the liquid outlet 13 that is linked together with urea chamber 11 are seted up respectively to the outer wall both sides of the pump body 1, inlet 12 highly is less than the height of liquid outlet 13, and the internal thread hole of connecting the urea pipe joint is seted up to inlet 12, the outer mouth of liquid outlet 13.
The bottom end of the pressure sensor 2 is inserted into the sensor mounting hole 14, the pressure sensor 2 is connected with the sensor mounting hole 14 in a sealing mode through a sealing ring, the sealing ring is embedded on the outer wall of the insertion part of the sensor mounting hole 14, and the two ends of the pressure sensor 2 are locked to the top end of the pump body 1 through screws.
As shown in fig. 3, the pressure relief airbag 4 is disposed in the urea cavity 11, the bottom end of the pressure relief airbag 4 is pressed on the screw hole 15 through the screw 3, and a sealed pressure relief cavity 43 is formed, the size of the pressure relief airbag 4 is determined according to the size of the space of the urea cavity 11, and the pressure relief airbag 4 includes a pressure relief airbag body 41 and a circular ring-shaped edge 42 fixed at the bottom end of the pressure relief airbag body 41.
The diameter of screw hole 15 is greater than the diameter in urea chamber 11 and corresponding with blank pressing 42 diameter, blank pressing 42 crimping is between 11 bottoms in urea chamber and screw 3, be provided with gasket 6 between blank pressing 42 and the screw 3, improve the leakproofness of pressure release gasbag 4 to the protection blank pressing is not by the rotatory fish tail of screw, screw 3 is hexagon socket head locking screw, and highly not higher than the bottom surface of the pump body 1 when the screw 3 assembly is accomplished.
As shown in fig. 4 and 5, a plurality of assembling threaded holes 5 are uniformly formed at the upper end and the lower end of the pump body 1.
During the use, urea gets into from inlet 12, is full of and discharges from liquid outlet 13 behind the urea chamber 11, pressure sensor real-time detection urea chamber 11 internal pressure, when the urea pump stop work, the ambient temperature is less than minus 11 ℃ under the urea can expand, because under the effect of pressure release gasbag 4, urea extrusion pressure release gasbag 4, pressure release gasbag 4 takes place the deformation, for urea provides the inflation space, avoided urea direct extrusion pressure sensor, pressure sensor's life has been improved, the reliability of using has been improved.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.
Claims (6)
1. The utility model provides a SCR urea pump with pressure relief gasbag structure which characterized in that: comprises a pump body (1), a pressure sensor (2) arranged at the top end of the pump body (1) and a pressure relief air bag (4) arranged in a urea cavity (11) of the pump body (1);
the pump body (1) is of a rectangular structure, the upper end and the lower end of the pump body (1) are respectively provided with a sensor mounting hole (14) and a screw hole (15) which are communicated with the urea cavity (11), the two sides of the outer wall of the pump body (1) are respectively provided with a liquid inlet (12) and a liquid outlet (13) which are communicated with the urea cavity (11), and the height of the liquid inlet (12) is smaller than that of the liquid outlet (13);
the bottom end of the pressure sensor (2) is inserted into the sensor mounting hole (14) and is in sealing connection;
pressure release gasbag (4) set up in urea chamber (11), and the bottom of pressure release gasbag (4) passes through screw (3) crimping on screw hole (15) to form sealed pressure release chamber (43).
2. The SCR urea pump with a pressure relief air bag structure of claim 1, wherein: the pressure relief airbag (4) comprises a pressure relief airbag body (41) and a circular ring-shaped edge pressing (42) fixed at the bottom end of the pressure relief airbag body (41).
3. The SCR urea pump with a pressure relief air bag structure of claim 2, wherein: the diameter of the screw hole (15) is larger than that of the urea cavity (11) and corresponds to that of the blank holder (42), and the blank holder (42) is pressed between the bottom end of the urea cavity (11) and the screw (3).
4. The SCR urea pump with a pressure relief air bag structure of claim 3, wherein: and a gasket (6) is arranged between the blank holder (42) and the screw (3).
5. The SCR urea pump with a pressure relief airbag structure of claim 1, wherein: a plurality of assembly threaded holes (5) are uniformly formed in the upper end and the lower end of the pump body (1).
6. The SCR urea pump with a pressure relief air bag structure of claim 1, wherein: the screw (3) is a hexagon socket locking screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221534847.4U CN217712730U (en) | 2022-06-20 | 2022-06-20 | SCR urea pump with pressure release gasbag structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221534847.4U CN217712730U (en) | 2022-06-20 | 2022-06-20 | SCR urea pump with pressure release gasbag structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217712730U true CN217712730U (en) | 2022-11-01 |
Family
ID=83800827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221534847.4U Active CN217712730U (en) | 2022-06-20 | 2022-06-20 | SCR urea pump with pressure release gasbag structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217712730U (en) |
-
2022
- 2022-06-20 CN CN202221534847.4U patent/CN217712730U/en active Active
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