CN218991834U - Urea pump conveying system - Google Patents
Urea pump conveying system Download PDFInfo
- Publication number
- CN218991834U CN218991834U CN202223004442.2U CN202223004442U CN218991834U CN 218991834 U CN218991834 U CN 218991834U CN 202223004442 U CN202223004442 U CN 202223004442U CN 218991834 U CN218991834 U CN 218991834U
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- Prior art keywords
- port
- communicated
- urea
- electromagnetic valve
- liquid
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- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 title claims abstract description 31
- 239000004202 carbamide Substances 0.000 title claims abstract description 31
- 239000007788 liquid Substances 0.000 claims abstract description 51
- 238000005086 pumping Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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- Reciprocating Pumps (AREA)
Abstract
The utility model discloses a urea pump conveying system, which comprises: one end of the liquid inlet flow passage is communicated into the urea box through a liquid inlet pipe joint; one end of the liquid outlet channel is communicated with the electric control nozzle through a liquid outlet pipe, and the liquid outlet channel is also communicated with the urea box through an overflow part; a diaphragm pump; the cross combination reversing valve comprises a first electromagnetic valve and a second electromagnetic valve, wherein the first electromagnetic valve controls the opening and the closing of an A port and a B port, the second electromagnetic valve controls the opening and the closing of an A1 port and a B1 port, the A port is connected to the B1 port after passing through a diaphragm pump, the A1 port is connected to the B port after passing through the diaphragm pump, the other end of the liquid inlet flow passage is communicated with the A port and the B port, and the other end of the liquid outlet flow passage is communicated with the A1 port and the B1 port. The utility model adopts a one-way pump and cross combined reversing valve to realize the forward flow or reverse flow of urea solution in a flow channel and realize the cross inlet and outlet functions.
Description
Technical Field
The utility model relates to the technical field of urea pump conveying systems. More particularly, the present utility model relates to a urea pump delivery system.
Background
At present, in two working modes of normal liquid supply and back pumping in a urea pump conveying system, the two pumps or the shifting block reversing valve are arranged in the urea pump conveying system, but the mode of the implementation makes the urea pump conveying system have higher cost, unstable performance, higher sealing requirement and easy liquid leakage.
Disclosure of Invention
The utility model aims to provide a urea pump conveying system, which adopts a one-way pump and a cross combined reversing valve to realize the forward flow or the reverse flow of urea solution in a flow channel and realize the cross inlet and outlet functions.
To achieve these objects and other advantages and in accordance with the purpose of the utility model, there is provided a urea pump delivery system comprising: one end of the liquid inlet flow passage is communicated into the urea box through a liquid inlet pipe joint; one end of the liquid outlet channel is communicated with the electric control nozzle through a liquid outlet pipe, and the liquid outlet channel is also communicated with the urea box through an overflow part; a diaphragm pump; the cross combination reversing valve comprises a first electromagnetic valve and a second electromagnetic valve, wherein the first electromagnetic valve controls the opening and the closing of an A port and a B port, the second electromagnetic valve controls the opening and the closing of an A1 port and a B1 port, the A port is connected to the B1 port after passing through a diaphragm pump, the A1 port is connected to the B port after passing through the diaphragm pump, the other end of the liquid inlet flow passage is communicated with the A port and the B port, and the other end of the liquid outlet flow passage is communicated with the A1 port and the B1 port.
Preferably, the diaphragm pump is a unidirectional diaphragm pump.
Preferably, the liquid inlet flow channel is further provided with an inlet filter element, and the liquid outlet flow channel is further provided with a main filter element.
Preferably, the liquid outlet channel is also provided with a pressure sensor.
Preferably, the overflow part is formed by reducing the diameter of the pipeline.
The utility model at least comprises the following beneficial effects:
the urea pump conveying system realizes the function of realizing the cross inlet and outlet of urea solution by arranging the diaphragm pump with one-way pumping and the cross combined reversing valve and forward inflow or reverse inflow in the flow channel, and compared with the existing two-way conveying mode, the urea pump conveying system has the advantages of simple structure, convenience in control, relatively stable circulation performance, no leakage and the like.
Additional advantages, objects, and features of the utility model will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the utility model.
Drawings
FIG. 1 is a schematic illustration of the principles of operation of the forward flow system of the present utility model;
FIG. 2 is a schematic illustration of the principles of operation of the reverse flow system of the present utility model.
Detailed Description
The present utility model is described in further detail below with reference to the drawings to enable those skilled in the art to practice the utility model by referring to the description.
It should be noted that the experimental methods described in the following embodiments, unless otherwise specified, are all conventional methods, and the reagents and materials, unless otherwise specified, are all commercially available; in the description of the present utility model, the terms "transverse", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus are not to be construed as limiting the present utility model.
As shown in fig. 1 and 2, the present utility model provides a urea pump delivery system comprising: one end of the liquid inlet flow passage is communicated into the urea box through a liquid inlet pipe joint; one end of the liquid outlet channel is communicated with the electric control nozzle through a liquid outlet pipe, and the liquid outlet channel is also communicated with the urea box through an overflow part; a diaphragm pump; the cross combination reversing valve comprises a first electromagnetic valve and a second electromagnetic valve, wherein the first electromagnetic valve controls the opening and the closing of an A port and a B port, the second electromagnetic valve controls the opening and the closing of an A1 port and a B1 port, the A port is connected to the B1 port after passing through a diaphragm pump, the A1 port is connected to the B port after passing through the diaphragm pump, the other end of the liquid inlet flow passage is communicated with the A port and the B port, and the other end of the liquid outlet flow passage is communicated with the A1 port and the B1 port.
In the technical scheme, when liquid flows in forward (as shown in fig. 1), the liquid in the urea box passes through the liquid inlet pipe joint and the inlet filter core and then reaches the combined electromagnetic valve, at the moment, the channel of the cross combined reversing valve A-B1 is opened, the channel B-A1 is closed, the liquid flows from the port A of the cross combined reversing valve to the port B1 under the action of the diaphragm pump, and the liquid passes through the main filter core, the pressure sensor and the liquid outlet pipe to reach the electric control nozzle; liquid which is not sprayed out in time in the pipeline flows out through the overflow part. When liquid flows in reversely (as shown in figure 2), the liquid in the electric control nozzle passes through the liquid outlet pipe, the pressure sensor and the main filter element to the combined electromagnetic valve, at the moment, the channel of the cross combined reversing valve A1-B is opened, the channel B1-A is closed, the liquid flows from the port A1 of the cross combined reversing valve to the port B under the action of the diaphragm pump, and returns to the liquid storage urea tank through the inlet filter element and the liquid inlet pipe joint. The cross combination reversing valve is controlled to be in an opposite state, a first electromagnetic valve A is opened, a second electromagnetic valve B is closed, a first electromagnetic valve A1 is closed, and a second electromagnetic valve B1 is opened; forming a cross combined reversing valve 'A' - 'B1' communication; conversely, "A1" - "B" is formed to communicate; forming cross-exchanges.
In another technical scheme, the diaphragm pump is a unidirectional diaphragm pump, so that unidirectional pumping is realized.
In another technical scheme, an inlet filter element is further arranged on the liquid inlet flow channel, and a main filter element is further arranged on the liquid outlet flow channel, so that impurities in circulating liquid are filtered.
In another technical scheme, the liquid outlet channel is also provided with a pressure sensor, so that the effect of monitoring the pressure of circulating liquid is achieved.
In another technical scheme, the overflow part is formed by reducing the diameter of a pipeline, the pipeline is reduced to be a small opening, and the diameter is 0.3-0.4mm, so that the overflow function is realized.
Although embodiments of the present utility model have been disclosed above, it is not limited to the details and embodiments shown and described, it is well suited to various fields of use for which the utility model would be readily apparent to those skilled in the art, and accordingly, the utility model is not limited to the specific details and illustrations shown and described herein, without departing from the general concepts defined in the claims and their equivalents.
Claims (5)
1. A urea pump delivery system, comprising:
one end of the liquid inlet flow passage is communicated into the urea box through a liquid inlet pipe joint;
one end of the liquid outlet channel is communicated with the electric control nozzle through a liquid outlet pipe, and the liquid outlet channel is also communicated with the urea box through an overflow part;
a diaphragm pump;
the cross combination reversing valve comprises a first electromagnetic valve and a second electromagnetic valve, wherein the first electromagnetic valve controls the opening and the closing of an A port and a B port, the second electromagnetic valve controls the opening and the closing of an A1 port and a B1 port, the A port is connected to the B1 port after passing through a diaphragm pump, the A1 port is connected to the B port after passing through the diaphragm pump, the other end of the liquid inlet flow passage is communicated with the A port and the B port, and the other end of the liquid outlet flow passage is communicated with the A1 port and the B1 port.
2. The urea pump delivery system of claim 1, wherein the diaphragm pump is a unidirectional diaphragm pump.
3. The urea pump delivery system of claim 1, wherein the inlet flow channel is further provided with an inlet filter element and the outlet flow channel is further provided with a main filter element.
4. The urea pump delivery system of claim 1, wherein the outlet flow channel is further provided with a pressure sensor.
5. The urea pump delivery system of claim 1, wherein the overflow member is formed with a reduced diameter conduit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223004442.2U CN218991834U (en) | 2022-11-11 | 2022-11-11 | Urea pump conveying system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223004442.2U CN218991834U (en) | 2022-11-11 | 2022-11-11 | Urea pump conveying system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218991834U true CN218991834U (en) | 2023-05-09 |
Family
ID=86196554
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223004442.2U Active CN218991834U (en) | 2022-11-11 | 2022-11-11 | Urea pump conveying system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218991834U (en) |
-
2022
- 2022-11-11 CN CN202223004442.2U patent/CN218991834U/en active Active
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