CN107213824A - A kind of method and device for manufacturing urea for vehicle solution - Google Patents
A kind of method and device for manufacturing urea for vehicle solution Download PDFInfo
- Publication number
- CN107213824A CN107213824A CN201710488454.1A CN201710488454A CN107213824A CN 107213824 A CN107213824 A CN 107213824A CN 201710488454 A CN201710488454 A CN 201710488454A CN 107213824 A CN107213824 A CN 107213824A
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- Prior art keywords
- urea
- vehicle solution
- concentration sensor
- stirred tank
- concentration
- 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.)
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Links
- 239000004202 carbamide Substances 0.000 title claims abstract description 164
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 title claims abstract description 163
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000012544 monitoring process Methods 0.000 claims abstract description 21
- 239000008187 granular material Substances 0.000 claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000002994 raw material Substances 0.000 claims abstract description 4
- 239000007788 liquid Substances 0.000 claims description 37
- 239000012498 ultrapure water Substances 0.000 claims description 29
- 238000004364 calculation method Methods 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 230000002165 photosensitisation Effects 0.000 claims description 3
- 239000003504 photosensitizing agent Substances 0.000 claims description 3
- 230000004044 response Effects 0.000 claims description 3
- 238000012546 transfer Methods 0.000 claims description 3
- 235000021050 feed intake Nutrition 0.000 abstract description 3
- 230000006872 improvement Effects 0.000 description 6
- 238000005259 measurement Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 210000002700 urine Anatomy 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229910021642 ultra pure water Inorganic materials 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
- B01F27/90—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with paddles or arms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F21/00—Dissolving
- B01F21/10—Dissolving using driven stirrers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/20—Measuring; Control or regulation
- B01F35/21—Measuring
- B01F35/211—Measuring of the operational parameters
- B01F35/2115—Temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/20—Measuring; Control or regulation
- B01F35/21—Measuring
- B01F35/2132—Concentration, pH, pOH, p(ION) or oxygen-demand
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention discloses a kind of method and device for manufacturing urea for vehicle solution, this method includes:(a) raw material is added；(b) urea granules dissolve；(c) data monitoring and amendment；(d) data are calculated；(e) pure water is increased；(f) repeat step (c) data monitoring and amendment；(g) urea for vehicle solution is exported.The device includes control system, stirred tank, the urea concentration sensor inside stirred tank and temperature sensor；The upper end of stirred tank is provided with inlet channel, and inlet channel is provided with first flowmeter, and urea concentration sensor and first flowmeter are electrically connected with control system；Control system includes data acquisition amending unit.In summary, a kind of method and device of manufacture urea for vehicle solution of the present invention, the qualified urea for vehicle solution of concentration can not only be produced, can also avoid due to manpower-free feed intake error and urea concentration sensor low temperature Monitoring Data it is inaccurate caused by the underproof problem of urea concentration.
Description
Technical field
The invention belongs to urea for vehicle solution technique field, more particularly to a kind of method for manufacturing urea for vehicle solution and
Device.
Background technology
In urea for vehicle solution production process, directly a certain amount of urea granules and ultra-pure water that measure are added and stirred
Kettle is mixed, is mixed, stirred, you can the qualified urea for vehicle solution of concentration is obtained.In actual production, Manual material feeding process can
Can occur surprisingly, such as urea granules are trickled down；Or there is certain difference between the urea amount of being actually loaded into and scalar quantity when dispatching from the factory in urea
Not.Case above can all influence the concentration of urea for vehicle solution, cause the concentration of the urea for vehicle solution of production not meet and want
Ask.
In the prior art, it is many that the concentration of urea liquid is monitored using urea concentration sensor, to ensure production
The concentration of urea for vehicle solution is qualified.Due to needing constantly heat absorption in urea course of dissolution, the urea for vehicle just matched is molten
The temperature of liquid is all than relatively low.The Monitoring Data of urea concentration sensor would generally be higher than the actual value of urea concentration under low temperature, by
This error caused can influence the final quality of urea for vehicle solution.
The content of the invention
For disadvantages described above, first technical problem to be solved by this invention is：There is provided a kind of manufacture urea for vehicle molten
The method of liquid, the qualified urea for vehicle solution of urea solubility can be produced using this method, reduce artificial operating mistake to urea
The influence of solution concentration.
Second technical problem to be solved by this invention be：A kind of device for manufacturing urea for vehicle solution is provided, utilized
The device can not only produce the qualified urea for vehicle solution of concentration, can also avoid due to manpower-free feed intake error and urea it is dense
Spend sensor low temperature Monitoring Data and forbidden the caused underproof problem of urea concentration.
To solve above-mentioned first technical problem, the technical scheme is that：
A kind of method for manufacturing urea for vehicle solution, comprises the following steps：
(a) raw material is added：High purity water and urea granules are added into reactor, and monitor the addition of high purity water automatically：
The high purity water of addition must not have urea granules, based on experience value the higher urea liquid of matched proportion density first；
(b) urea granules dissolve：Start motor to be stirred, until urea granules all dissolve；
(c) data monitoring and amendment：The concentration and temperature of urea for vehicle solution in reactor are monitored, and by data transfer
It is modified to control system；
(d) data are calculated：According to the concentration of revised urea for vehicle solution and the amount of the high purity water added, control system
System is automatic to be calculated, and matches the quality Δ m that qualified urea for vehicle solution also needs to the high purity water of additioni；
(e) pure water is increased：The result calculated according to step (c), quantitative high purity water m is added into reactori, wherein mi
≤Δmi；
(f) repeat step (c) data monitoring and amendment；
(g) urea for vehicle solution is exported：If the concentration of revised urea for vehicle solution is qualified, qualified automobile-used urine
Plain solution is exported through liquid outlet, and the amount of the qualified urea for vehicle solution of automatic gauge；If unqualified, continue repeat step
(d) with step (c) until producing the qualified urea for vehicle solution of concentration.
It is preferred that, in step (c) data monitoring and amendment, preset urea concentration sensor reading in control system
The standard curve varied with temperature, record temperature urea concentration sensor reading ρ01With temperature sensor reading T01, to sighting target
Directrix curve obtains the actual concentrations ρ of urea liquid1。
It is preferred that, during step (d) data are calculated, the quality m of urea granules is added in calculation procedure (a) first0,
According toCalculate
Wherein m1To add the quality of high purity water for the first time, the reality for the first time after the conversion of the urea liquid of measurement is dense
Spend ρ1；
Secondly, the quality Δ m of high purity water will be added by calculating second2,
CalculateWherein ρ is molten for the urea for vehicle that needs are matched
The concentration of liquid；
Similarly, the quality of the ith high purity water to be added can be calculated：
Wherein, Δ miThe theoretical value of the quality of the water added, m are needed for ithiThe matter for the water being actually added into for ith
Amount；
Calculate
It is preferred that, in step (c) data monitoring and amendment, temperature sensor and concentration sensor in question response kettle
Registration it is stable after, then carry out data acquisition.
To solve above-mentioned second technical problem, the technical scheme is that：
It is a kind of manufacture urea for vehicle solution device, including control system, stirred tank, inside the stirred tank
Urea concentration sensor and temperature sensor；The upper end of the stirred tank is provided with inlet channel, and inlet channel is provided with first
Flowmeter, the urea concentration sensor and first flowmeter are electrically connected with the control system；The control system includes
Data acquisition amending unit.
As an improvement, the urea concentration sensor is infrared photosensitizing type urea concentration sensor；The stirred tank
Interior to be provided with darkroom, the urea concentration sensor is arranged in the darkroom.
As an improvement, it is additionally provided with the stirred tank on pump, the pump and is connected with flush pipe, the flush pipe
The other end is directed at the urea concentration sensor.
As an improvement, the inside of the stirred tank is additionally provided with liquid level meter, and liquid level meter is electrically connected with the control system
Connect.
As an improvement, the upper end of the stirred tank is additionally provided with charging aperture, and lower end, which is provided with liquid outlet, liquid outlet, pacifies
Fill second flowmeter.
As an improvement, the distance of the urea concentration sensor to the stirred tank bottom for 25cm to 35cm it
Between.
Above-mentioned technical proposal is employed, the beneficial effects of the invention are as follows：
1st, using the concentration of the real-time monitoring car urea liquid of urea concentration sensor, the inflow of high purity water is adjusted, directly
To producing the qualified urea for vehicle solution of urea concentration.Control system includes data acquisition amending unit, to solve urea
The problem of concentration sensor low temperature Monitoring Data is forbidden.
2nd, the amount of the urea for vehicle solution manufactured by second flowmeter energy automatic gauge is utilized.
3rd, urea concentration sensor is arranged in darkroom, it is ensured that urea concentration sensor is not disturbed by ambient light, monitoring
As a result it is more accurate, reliable.
In summary, the method and device of a kind of manufacture urea for vehicle solution of the invention, can not only produce concentration conjunction
The urea for vehicle solution of lattice, can also be avoided because feed intake error and urea concentration sensor low temperature Monitoring Data of manpower-free is inaccurate
The underproof problem of caused urea concentration.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the device of manufacture urea for vehicle solution of the present invention；
Fig. 2 is the standard curve that urea concentration sensor reading is varied with temperature；
Wherein：1- stirred tanks, 11- inlet channels, 12- water intaking valves, 13- first flowmeters, 14- charging apertures, 15- goes out liquid
Mouthful, 16- second flowmeters, 17- liquid valves, 2- urea concentration sensors, 3- temperature sensors, 4- liquid level meters, 5- darkrooms, 6-
Rotating shaft, 7- stirring vanes, 8- motors, 9- pumps, 91- flush pipes.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, below in conjunction with drawings and Examples,
The present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only to explain the present invention,
It is not intended to limit the present invention.
Embodiment
As shown in Figure 1, a kind of device for manufacturing urea for vehicle solution, including control system (not shown), stirred tank
1st, inside stirred tank 1 urea concentration sensor 2, temperature sensor 3 and liquid level meter 4.The upper end of stirred tank 1 is provided with
Inlet channel 11, inlet channel 11 is provided with water intaking valve 12 and first flowmeter 13.The upper end of stirred tank 1 is additionally provided with charging aperture
14, lower end, which is provided with liquid outlet 15, liquid outlet 15, installs second flowmeter 16 and liquid valve 17.
As shown in Figure 1, urea concentration sensor 2 is infrared photosensitizing type urea concentration sensor.Provided with dark in stirred tank 1
Room 5, urea concentration sensor 2 is arranged in darkroom 5, it is ensured that urea concentration sensor 2 is not disturbed by ambient light, monitoring
As a result it is more accurate, reliable.Urea concentration sensor 2 arrives the distance of the bottom of stirred tank 1 between 25cm to 35cm.The position
The region that bottom urea is not completely dissolved can be not only avoided, also can guarantee that urea concentration sensor 2 is placed in urea liquid, make
Obtain Monitoring Data more accurate, reliable.Be provided with rotating shaft 6 and the stirring vane 7 in rotating shaft 6 in stirred tank 1, rotating shaft 6 with
It is arranged on the motor 8 outside stirred tank 1 and rotates connection.It is additionally provided with stirred tank 1 on pump 9, pump 9 and is connected with flush pipe 91, is rushed
Wash the other end alignment urea concentration sensor 2 of pipe 91.The automobile-used urine that flush pipe 91 sprays in urea for vehicle solution production process
Plain solution constantly impacts urea concentration sensor 2, and bubble can be prevented to be attracted to the surface of urea concentration sensor 2, and urea is dense
The Monitoring Data for spending sensor 2 is more accurate.
Control system includes data acquisition amending unit (not shown).As shown in Figure 2, urea concentration sensor 2 is normal
Data stabilization that the lower urea concentration sensor of temperature is measured and accurate, the data measured under low temperature are dense higher than the reality of urea liquid
Degree.The standard curve that the preset reading of urea concentration sensor 2 is varied with temperature in data acquisition amending unit, to solve urea
The problem of Monitoring Data is inaccurate under the low temperature of concentration sensor 2.Urea concentration sensor 2, water intaking valve 12, first flowmeter 13,
Two flowmeters 16, liquid valve 17, liquid level meter 4, temperature sensor 3 and motor 8 are electrically connected with control system.
A kind of method for manufacturing urea for vehicle solution：Comprise the following steps：
(a) raw material is added：High purity water and urea granules are added into reactor, and monitor the addition of high purity water automatically：
The high purity water of addition must not have urea granules, based on experience value the higher urea liquid of matched proportion density first.In general,
The concentration requirement of urea for vehicle solution is 32.5%, then it is required that rule of thumb, the urea that the High-efficient Water at this moment added is produced
The concentration of solution should be higher than 32.5%.
(b) urea granules dissolve：Start motor to be stirred, until urea granules all dissolve.Because urea granules are molten
Solution is a process constantly absorbed heat, and generally about 20 minutes or so, treats the registration of temperature sensor and urea concentration sensor
All stablize, illustrate that urea granules fully dissolve.
(c) data monitoring and amendment：Monitor the concentration and temperature of urea for vehicle solution in reactor, the middle temperature of question response kettle
After the registration stabilization for spending sensor and concentration sensor, then carry out data acquisition.And transfer data to control system and repaiied
Just；Record temperature urea concentration sensor reading ρ01With temperature sensor reading T01, reference standard curve acquisition urea liquid
Actual concentrations ρ1。
(d) data are calculated：According to the concentration of revised urea for vehicle solution and the amount of the high purity water added, control system
System is automatic to be calculated, and matches the quality Δ m that qualified urea for vehicle solution also needs to the high purity water of additioni；
The quality m of urea granules is added in calculation procedure (a) first0,
According toCalculate
Wherein m1To add the quality of high purity water for the first time, the reality for the first time after the conversion of the urea liquid of measurement is dense
Spend ρ1；
Secondly, the quality Δ m of second of high purity water to be added is calculated2,
CalculateWherein ρ is molten for the urea for vehicle that needs are matched
The concentration of liquid；
Similarly, the amount of the ith high purity water to be added can be calculated：
Wherein, Δ miThe theoretical value of the quality of the water added, m are needed for ithiThe matter for the water being actually added into for ith
Amount；
Calculate
(e) pure water is increased：The result calculated according to step (c), quantitative high purity water is added into reactor, is added high
The quality m of pure water2≤Δm2.It is preferred in the present embodiment,
(f) repeat step (c)：If the concentration of revised urea for vehicle solution is qualified, qualified urea for vehicle solution
Exported through liquid outlet, and the amount of the qualified urea for vehicle solution of automatic gauge；If unqualified, continue repeat step (d) and step
Suddenly (c) is until produce the qualified urea for vehicle solution of concentration.
By adding water and detecting several times, until the urea for vehicle solution of production reaches the concentration value that we require.
In summary, the method and device of a kind of manufacture urea for vehicle solution of the invention, can be avoided because manpower-free throws
Expect that error and urea concentration sensor low temperature Monitoring Data are forbidden the caused underproof problem of urea for vehicle solution concentration,
The concentration of the urea for vehicle solution produced is qualified, and quality is high.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
Any modifications, equivalent substitutions and improvements made within refreshing and principle etc., should be included in the scope of the protection.
Claims (10)
1. a kind of method for manufacturing urea for vehicle solution, it is characterised in that comprise the following steps：
(a) raw material is added：High purity water and urea granules are added into reactor, and monitor the addition of high purity water automatically：Add
High purity water must not have urea granules, the higher urea liquid of matched proportion density first based on experience value；
(b) urea granules dissolve：Start motor to be stirred, until urea granules all dissolve；
(c) data monitoring and amendment：The concentration and temperature of urea for vehicle solution in reactor are monitored, and transfers data to control
System is modified；
(d) data are calculated：According to the concentration of revised urea for vehicle solution and the amount of the high purity water added, control system is automatic
Calculate, match the quality Δ m that qualified urea for vehicle solution also needs to the high purity water of additioni；
(e) pure water is increased：The result calculated according to step (c), quantitative high purity water m is added into reactori, wherein mi≤Δ
mi；
(f) repeat step (c) data monitoring and amendment；
(g) urea for vehicle solution is exported：If the concentration of revised urea for vehicle solution is qualified, qualified urea for vehicle solution
Exported through liquid outlet, and the amount of the qualified urea for vehicle solution of automatic gauge；If unqualified, continue repeat step (d) and step
Suddenly (c) is until produce the qualified urea for vehicle solution of concentration.
2. the method for manufacture urea for vehicle solution according to claim 1, it is characterised in that：Step (c) the data prison
In surveying and correcting, the standard curve that preset urea concentration sensor reading is varied with temperature in control system records temperature urea
Concentration sensor reading ρ01With temperature sensor reading T01, the actual concentrations ρ of reference standard curve acquisition urea liquid1。
3. the method for manufacture urea for vehicle solution according to claim 1, it is characterised in that：Step (d) the data meter
In calculation,
The quality m of urea granules is added in calculation procedure (a) first0,
According toCalculate
Wherein m1To add the quality of high purity water, the actual concentrations ρ after the conversion of the urea liquid measured for the first time for the first time1；
Secondly, the quality Δ m for the high purity water that second of needs is added is calculated2,
CalculateWherein ρ is dense for the urea for vehicle solution of needs proportioning
Degree；
Similarly, can calculate ith will add the amount of high purity water：
Wherein, Δ miThe theoretical value of the quality of the water added, m are needed for ithiThe quality for the water being actually added into for ith；
Calculate
4. the method for manufacture urea for vehicle solution according to claim 1, it is characterised in that：Step (c) the data prison
In surveying and correcting, after the registration of temperature sensor and concentration sensor is stable in question response kettle, then data acquisition is carried out.
5. a kind of device for being used to realize the manufacture urea for vehicle solution described in claim 1, it is characterised in that：Including control system
System, stirred tank, the urea concentration sensor inside the stirred tank and temperature sensor；The upper end of the stirred tank is set
Have an inlet channel, inlet channel is provided with first flowmeter, the urea concentration sensor and first flowmeter with the control
System electrical connection processed；The control system includes data acquisition amending unit.
6. the device of manufacture urea for vehicle solution according to claim 5, it is characterised in that：The urea concentration sensor
For infrared photosensitizing type urea concentration sensor；Darkroom is provided with the stirred tank, the urea concentration sensor is arranged on described
In darkroom.
7. the device of manufacture urea for vehicle solution according to claim 5, it is characterised in that：It is additionally provided with the stirred tank
Flush pipe is connected with pump, the pump, the other end of the flush pipe is directed at the urea concentration sensor.
8. the device of manufacture urea for vehicle solution according to claim 5, it is characterised in that：The inside of the stirred tank is also
Provided with liquid level meter, liquid level meter is electrically connected with the control system.
9. the device of manufacture urea for vehicle solution according to claim 5, it is characterised in that：The upper end of the stirred tank is also
Provided with charging aperture, lower end, which is provided with liquid outlet, liquid outlet, installs second flowmeter.
10. the device of manufacture urea for vehicle solution according to claim 5, it is characterised in that：The urea concentration sensing
Device to the stirred tank bottom distance be 25cm to 35cm between.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710488454.1A CN107213824B (en) | 2017-06-23 | 2017-06-23 | Method and device for manufacturing urea solution for vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710488454.1A CN107213824B (en) | 2017-06-23 | 2017-06-23 | Method and device for manufacturing urea solution for vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107213824A true CN107213824A (en) | 2017-09-29 |
| CN107213824B CN107213824B (en) | 2022-12-30 |
Family
ID=59950304
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710488454.1A Active CN107213824B (en) | 2017-06-23 | 2017-06-23 | Method and device for manufacturing urea solution for vehicle |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107744730A (en) * | 2017-11-07 | 2018-03-02 | 山东新蓝环保科技有限公司 | A kind of quick manufacturing machine of urea for vehicle solution |
| CN108970461A (en) * | 2018-09-07 | 2018-12-11 | 珠海格力智能装备有限公司 | Agitating unit and have its urea machine |
| CN109126490A (en) * | 2018-09-07 | 2019-01-04 | 珠海格力智能装备有限公司 | Method and device for preparing urea solution |
| CN111589312A (en) * | 2020-06-01 | 2020-08-28 | 珠海格力智能装备有限公司 | Method and device for dissolving urea, storage medium, processor and stirring system |
| CN112426961A (en) * | 2020-11-02 | 2021-03-02 | 珠海格力智能装备有限公司 | Method and device for generating urea solution and system for generating urea solution |
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| CN106681380A (en) * | 2016-12-14 | 2017-05-17 | 珠海格力智能装备有限公司 | Method and device for controlling concentration of urea solution for vehicle |
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| CN107744730A (en) * | 2017-11-07 | 2018-03-02 | 山东新蓝环保科技有限公司 | A kind of quick manufacturing machine of urea for vehicle solution |
| CN108970461A (en) * | 2018-09-07 | 2018-12-11 | 珠海格力智能装备有限公司 | Agitating unit and have its urea machine |
| CN109126490A (en) * | 2018-09-07 | 2019-01-04 | 珠海格力智能装备有限公司 | Method and device for preparing urea solution |
| WO2020048039A1 (en) * | 2018-09-07 | 2020-03-12 | 珠海格力智能装备有限公司 | Stirring device and urea machine having same |
| CN111589312A (en) * | 2020-06-01 | 2020-08-28 | 珠海格力智能装备有限公司 | Method and device for dissolving urea, storage medium, processor and stirring system |
| CN112426961A (en) * | 2020-11-02 | 2021-03-02 | 珠海格力智能装备有限公司 | Method and device for generating urea solution and system for generating urea solution |
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