CN210919415U - Urea pump detects prosthetic devices - Google Patents
Urea pump detects prosthetic devices Download PDFInfo
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- CN210919415U CN210919415U CN201921190085.9U CN201921190085U CN210919415U CN 210919415 U CN210919415 U CN 210919415U CN 201921190085 U CN201921190085 U CN 201921190085U CN 210919415 U CN210919415 U CN 210919415U
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Abstract
The utility model discloses a urea pump detects prosthetic devices, including controller module, switching-over valve, water pump and water tank, the controller module with the switching-over valve the urea pump and the water pump electricity is connected, through controller module control the urea pump with the switching of water pump and the switching-over valve, the switching-over valve with the water pump respectively with the water tank links to each other, the switching-over valve with the water pump link to each other and all with the urea pump is connected, the urea pump is connected with the solenoid valve, the solenoid valve is connected with controller module electricity, the solenoid valve is used for adjusting pressure and liquid flow in the urea pump, the solenoid valve is connected with a drainage tube, the drainage tube be used for the liquid drainage of urea pump that will flow through extremely technical scheme in the water tank, the utility model discloses can be used to the urea pump detects the restoration.
Description
Technical Field
The utility model relates to a urea pump detects prosthetic devices.
Background
A diesel exhaust (nitrogen oxide) post-treatment device atomizes and sprays diesel exhaust post-treatment solution (32.5% urea aqueous solution) into an exhaust pipe, and then reacts with the nitrogen oxide in the exhaust under the action of a catalyst to generate pollution-free nitrogen and H2And O. In the whole system, the urea pump has the functions of extracting the tail gas aftertreatment solution from the urea box, establishing a certain pressure and conveying the solution to the urea nozzle on the tail gas pipe.
Due to the reasons that the tail gas post-treatment solution used by a user is impure and the like, impurities in the solution have functional influence on the urea pump, and the failure that the urea pump cannot build pressure becomes a common problem. Meanwhile, the replacement period of the filter element in the urea pump also troubles the repair and maintenance workers of a large number of service stations.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a urea pump detects prosthetic devices, it has builds the pressure function to the urea pump and detects and repair and confirm the characteristics that the filter core was changed.
In order to solve the technical problem, the utility model discloses a technical scheme as follows: the utility model provides a urea pump detects prosthetic devices, includes controller module, switching-over valve, water pump and water tank, the controller module with the switching-over valve the urea pump and the water pump electricity is connected, through controller module control the urea pump with the switching of water pump and the switching of switching-over valve, the switching-over valve with the water pump respectively with the water tank links to each other, the switching-over valve with the water pump link to each other and all with the urea pump is connected, the urea pump is connected with the solenoid valve, the solenoid valve is connected with controller module electricity, the solenoid valve is used for adjusting pressure and liquid flow in the urea pump, the solenoid valve is connected with a drainage tube, the drainage tube is used for the liquid drainage of urea pump that will flow through extremely in the water tank.
Further, preferably, the reversing valve is connected to the two branch pipes and the main pipe, and the main pipe is switched to the first branch pipe and the second branch pipe through the reversing valve.
More preferably, the reversing valve is connected with the water pump through the main pipeline, and the main pipeline is connected with a liquid suction port of the urea pump through a liquid outlet pipe.
More preferably, the first branch pipe is communicated with the cleaning liquid inside the water tank, and the second branch pipe is connected to the upper side of the cleaning liquid inside the water tank.
More preferably, a first pressure sensor is arranged on the main pipeline between the liquid outlet pipe and the reversing valve.
More preferably, a throttle valve is arranged on the main pipeline close to the reversing valve.
Preferably, the water pump is communicated with the cleaning liquid in the water tank through a pipeline.
Furthermore, the urea pump includes two link ends, and a link end is located the top of urea case, and another link end is connected with the nozzle.
Further, the electromagnetic valve is a two-position two-way direct-acting electromagnetic valve. Preferably, the electromagnetic valve is 2V025-06 or 2V 025-08.
The utility model has the advantages that: the utility model discloses a controller module carries out the control of switching to water pump and urea pump to and control switching-over valve carries out the pipeline and switches and cooperate water pump and water tank to realize detecting and wasing synchronous completion, thereby has avoided the dismantlement of urea pump, washs that check-out time is short, efficient.
Drawings
FIG. 1 is a schematic structural view of a urea pump detection and repair device of the present invention;
FIG. 2 is a flow chart of the method for detecting the pressure build-up function of the urea pump of the present invention;
FIG. 3 is a flow chart of the pressure build-up repairing method of the urea pump of the present invention;
fig. 4 is a flow chart of the method for confirming replacement of a filter element of a urea pump of the present invention.
Detailed Description
The present invention is further described with reference to the following drawings and specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the embodiments are not to be construed as limiting the present invention.
The first embodiment is as follows:
please refer to fig. 1, the embodiment discloses a urea pump detection and repair device, which includes a controller module 1, a reversing valve 2, a water pump 3 and a water tank 4, wherein the controller module 1 is electrically connected with the reversing valve 2, the urea pump 5 and the water pump 3, the controller module 1 is used for controlling the opening and closing of the urea pump 5 and the water pump 3 and the switching of the reversing valve 2, the reversing valve 2 and the water pump 3 are respectively connected with the water tank 4, the reversing valve 2 is connected with the water pump 3 and both connected with the urea pump 5, and the water pump 3 is communicated with a cleaning solution in the water tank 4 through a pipeline 9;
the urea pump 5 comprises a throttle valve 52 and a return valve 53 which are sequentially connected in series, and a main filter element 58, a pump body 59 and a pre-filter element 511 which are sequentially connected in series, wherein the throttle valve 52 and the return valve 53 which are sequentially connected in series are simultaneously connected with a back-suction pump 54 in parallel to form two connecting ends, one end of the main filter element is connected with a nozzle through a first pipeline 55, the other end of the main filter element is connected to the upper part of the solution in the urea tank 57 through a second pipeline 56 and is not contacted with the solution, the main filter element 58 is connected with the first pipeline 55 through a third pipeline 512, a second pressure sensor 514 is arranged on the third pipeline 512, the pre-filter element 511 is connected to the solution in the urea tank 57 through a fourth pipeline 513; the first pipe 55 is further connected with a solenoid valve 550, the solenoid valve 550 is electrically connected with the controller module 1, and the solenoid valve 550 is used for adjusting the pressure and the liquid flow rate in the urea pump. The electromagnetic valve is a two-position two-way direct-acting electromagnetic valve, and the type is preferably 2V025-06 or 2V 025-08. The solenoid valve 550 is connected with a drain for draining the liquid (e.g., cleaning liquid) flowing through the urea pump into the tank.
The reversing valve 2 is connected with the two branch pipelines 61 and 62 and the main pipeline 63, the main pipeline 63 is respectively switched with the first branch pipeline 61 and the second branch pipeline 62 through the reversing valve 2, the reversing valve 2 is connected with the water pump 3 through the main pipeline 63, the main pipeline 63 is connected with the liquid suction port 51 of the urea pump 5 through the liquid outlet pipe 64, the first branch pipeline 61 is communicated with the cleaning liquid in the water tank 4, and the second branch pipeline 62 is connected to the upper part of the cleaning liquid in the water tank 4 and is not contacted with the cleaning liquid;
a first pressure sensor 7 is arranged on a main pipeline 63 between the liquid outlet pipe 64 and the reversing valve 2, specifically, a first pressure sensor 7 is arranged on the main pipeline 63 between the interface of the liquid outlet pipe 64 and the main pipeline 63 and the reversing valve 2, a throttle valve 8 is arranged on the main pipeline 63 close to the reversing valve 2, and the throttle valve 8 is arranged on the main pipeline 63 between the first pressure sensor 7 and the reversing valve 2. As shown in fig. 2, a method for detecting the pressure build-up function of a urea pump, 1) a first branch pipeline 61 and a main pipeline 63 are communicated through a reversing valve 2, and a urea pump 5 is driven to absorb liquid; 2) monitoring the second pressure sensor 513 reading P in the urea pump 5; 3) judging whether the reading P is larger than a set pressure value P0 and can be maintained for a certain time, and whether the maintained time t is larger than a set time t 0; 4) if yes, the second branch pipeline 62 is communicated with the main pipeline 63 through the reversing valve 2, the urea pump 5 is driven to pump air so as to empty the pump body 59, and the air enters from the second branch pipeline 62 and is exhausted through the pump body 59; 5) judging that the pressure building capability of the urea pump is normal and quitting the pressure building capability detection; 6) if not, the pressure building capability of the urea pump 5 is judged to be abnormal, a mistake is reported, the pressure building capability detection is quitted, and the urea pump 5 is entered for repair.
As shown in fig. 3, a urea pump pressure buildup repairing method includes 1) connecting a second branch pipeline 62 and a main pipeline 63 through a reversing valve 2, and driving a water pump 3 to convey cleaning liquid in a water tank 4 to a urea pump 5; 2) driving the pump body 59 of the urea pump 5 to operate so that the cleaning solution flushes the diaphragm in the pump body 59 of the urea pump 5; 3) reading the reading P of a second pressure sensor 514 in the urea pump 5; 4) judging whether the reading P is larger than a set pressure value P0 and can be maintained for a certain time, and whether the maintained time t is larger than a set time t 0; 5) if yes, the water pump 3 stops running, the urea pump 5 is driven to pump air so as to empty the pump body 59, and the air enters from the second branch pipeline 62 and is discharged through the pump body 59; 6) after cleaning is finished, judging that the pressure building repair of the urea pump 5 is finished; 7) if not, the urea pump 5 is judged to fail to repair, and the operation is exited. During the process of cleaning the urea pump, the controller module 1 sets a threshold value to which the solenoid valve 550 responds, when the reading P of the second pressure sensor 514 is higher than the threshold value, the controller module 1 controls the solenoid valve 550 to be started, and when the reading P of the second pressure sensor 514 is lower than the threshold value, the controller module 1 controls the solenoid valve 550 to be closed, so that certain pressure pulses and liquid flow are formed in the urea pump, and the urea pump can be better cleaned.
As shown in fig. 4, a method for confirming replacement of a filter element of a urea pump includes 1) connecting a second branch pipe 62 and a main pipe 63 through a reversing valve 2, and driving a water pump 3 to convey cleaning liquid in a water tank 4 to a urea pump 5; 2) driving the urea pump 5 to operate so that the cleaning solution flushes the diaphragm in the pump body 59 of the urea pump 5; 3) reading a first reading P1 of a pressure sensor on the main pipeline 63 and a second reading P2 of a pressure sensor on the urea pump 5, and calculating a difference value P between the two readings; 4) judging whether the difference value P is smaller than a set pressure value P0; 5) if so, the water pump 3 stops running, the urea pump 5 is driven to pump air so as to empty the pump body 59, the air enters from the second branch pipeline 62 and is discharged through the pump body 59, and the filter element does not need to be replaced; 6) if not, the filter element of the urea pump 5 is blocked, and replacement is recommended. During the process of cleaning the urea pump, the controller module 1 sets a threshold value to which the solenoid valve 550 responds, when the reading P2 of the second pressure sensor 514 is higher than the threshold value, the controller module 1 controls the solenoid valve 550 to be started, and when the reading P2 of the second pressure sensor 514 is lower than the threshold value, the controller module 1 controls the solenoid valve 550 to be closed, so that certain pressure pulses and liquid flow are formed in the urea pump, and the urea pump can be cleaned better.
The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. Equivalent substitutes or changes made by the technical personnel in the technical field on the basis of the utility model are all within the protection scope of the utility model. The protection scope of the present invention is subject to the claims.
Claims (9)
1. The utility model provides a urea pump detects prosthetic devices which characterized in that: including controller module, switching-over valve, water pump and water tank, the controller module with the switching-over valve the urea pump with the water pump electricity is connected, through controller module control the urea pump with the switching of water pump and the switching-over valve, the switching-over valve with the water pump respectively with the water tank links to each other, the switching-over valve with the water pump links to each other and all with the urea pump is connected, the urea pump is connected with the solenoid valve, the solenoid valve is connected with the controller module electricity, the solenoid valve is used for adjusting pressure and liquid flow in the urea pump, the solenoid valve is connected with the drainage tube, the drainage tube is used for the liquid drainage that will flow through the urea pump extremely in the water tank.
2. The apparatus as claimed in claim 1, wherein the direction-changing valve is connected to the two branch pipes and the main pipe, and the switching of the main pipe to the first branch pipe and the second branch pipe is performed by the direction-changing valve.
3. The urea pump detecting and repairing device as claimed in claim 2, wherein said reversing valve is connected to said water pump through said main pipe, and said main pipe is connected to a liquid suction port of said urea pump through a liquid outlet pipe.
4. The apparatus as claimed in claim 2, wherein the first branch conduit is connected to the cleaning liquid inside the water tank, and the second branch conduit is connected to the upper portion of the cleaning liquid inside the water tank.
5. A urea pump testing and repairing device as claimed in claim 3, wherein a first pressure sensor is provided on said main pipe between said outlet pipe and said reversing valve.
6. A urea pump testing and repairing device as claimed in claim 2, wherein a throttle valve is provided on said main pipe near said direction changing valve.
7. The urea pump testing and repairing device as claimed in claim 1, wherein said water pump is connected to the cleaning liquid in said water tank through a pipe.
8. The urea pump detecting and repairing device as claimed in claim 1, wherein the urea pump comprises two connecting ends, one connecting end is located above the urea tank, and the other connecting end is connected with the nozzle.
9. The urea pump detecting and repairing device as claimed in claim 1, wherein said solenoid valve is a two-position two-way direct-acting solenoid valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921190085.9U CN210919415U (en) | 2019-07-26 | 2019-07-26 | Urea pump detects prosthetic devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921190085.9U CN210919415U (en) | 2019-07-26 | 2019-07-26 | Urea pump detects prosthetic devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210919415U true CN210919415U (en) | 2020-07-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921190085.9U Active CN210919415U (en) | 2019-07-26 | 2019-07-26 | Urea pump detects prosthetic devices |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210919415U (en) |
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2019
- 2019-07-26 CN CN201921190085.9U patent/CN210919415U/en active Active
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