CN117181030A - High-efficiency production and purification device for vehicle urea standard solution and working method thereof - Google Patents
High-efficiency production and purification device for vehicle urea standard solution and working method thereof Download PDFInfo
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- CN117181030A CN117181030A CN202311465131.2A CN202311465131A CN117181030A CN 117181030 A CN117181030 A CN 117181030A CN 202311465131 A CN202311465131 A CN 202311465131A CN 117181030 A CN117181030 A CN 117181030A
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- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 title claims abstract description 118
- 239000004202 carbamide Substances 0.000 title claims abstract description 118
- 238000000746 purification Methods 0.000 title claims abstract description 76
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 24
- 239000012086 standard solution Substances 0.000 title claims abstract description 20
- 238000002156 mixing Methods 0.000 claims abstract description 126
- 238000000108 ultra-filtration Methods 0.000 claims abstract description 118
- 230000007246 mechanism Effects 0.000 claims abstract description 82
- 238000001914 filtration Methods 0.000 claims abstract description 69
- 238000003756 stirring Methods 0.000 claims abstract description 69
- 239000000243 solution Substances 0.000 claims abstract description 56
- 238000004140 cleaning Methods 0.000 claims abstract description 17
- 239000012535 impurity Substances 0.000 claims abstract description 13
- 238000007790 scraping Methods 0.000 claims description 62
- 210000000078 claw Anatomy 0.000 claims description 54
- 239000007788 liquid Substances 0.000 claims description 50
- 238000007789 sealing Methods 0.000 claims description 47
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 46
- OHJMTUPIZMNBFR-UHFFFAOYSA-N biuret Chemical compound NC(=O)NC(N)=O OHJMTUPIZMNBFR-UHFFFAOYSA-N 0.000 claims description 37
- 239000013078 crystal Substances 0.000 claims description 33
- 238000001816 cooling Methods 0.000 claims description 19
- 238000004891 communication Methods 0.000 claims description 16
- 238000007599 discharging Methods 0.000 claims description 16
- 239000000706 filtrate Substances 0.000 claims description 16
- 239000002994 raw material Substances 0.000 claims description 16
- 239000000047 product Substances 0.000 claims description 14
- 238000010438 heat treatment Methods 0.000 claims description 13
- 230000000149 penetrating effect Effects 0.000 claims description 11
- 239000012498 ultrapure water Substances 0.000 claims description 11
- 230000008569 process Effects 0.000 claims description 10
- 239000002699 waste material Substances 0.000 claims description 10
- 238000011010 flushing procedure Methods 0.000 claims description 8
- 238000004090 dissolution Methods 0.000 claims description 5
- 230000001965 increasing effect Effects 0.000 claims description 4
- 238000005192 partition Methods 0.000 claims description 4
- 239000010865 sewage Substances 0.000 claims description 4
- 230000000903 blocking effect Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 239000012528 membrane Substances 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims 1
- 230000001105 regulatory effect Effects 0.000 abstract description 7
- 238000010924 continuous production Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 4
- 230000001276 controlling effect Effects 0.000 abstract description 2
- 238000013461 design Methods 0.000 description 3
- 238000011001 backwashing Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000003028 elevating effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000003456 ion exchange resin Substances 0.000 description 1
- 229920003303 ion-exchange polymer Polymers 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention provides a high-efficiency production and purification device for a vehicle urea standard solution and a working method thereof, belonging to the technical field of urea production. The device comprises a mixing tank for mixing and purifying urea solution, a temperature regulating mechanism for controlling the temperature of the inner cavity of the mixing tank, a stirring mechanism, a lifting mechanism for lifting the stirring mechanism, a filtering mechanism for carrying out preliminary filtering on the urea solution and a super-purifying mechanism; the invention divides the vehicle urea production tank into working spaces for up-mixing and down-purifying, and integrates the filtration and ultrafiltration, thereby improving the quality of the prepared vehicle urea, ensuring the continuous production and improving the vehicle urea production efficiency; meanwhile, the structures such as the stirring mechanism, the lifting mechanism and the filtration ultrafiltration are improved, so that the purification device can realize the functions of repeated cleaning and fine filtration of impurities in the tank, avoid the influence of the impurities and improve the purification effect.
Description
Technical Field
The invention relates to the technical field of vehicle urea production, in particular to a vehicle urea standard solution efficient production and purification device and a working method thereof.
Background
The vehicle urea is an aqueous urea solution having a urea concentration of 32.5% and a high-purity water as a solvent, and the raw materials are urea crystals and high-purity water, and the vehicle urea solution generates a certain content of biuret in the process of being heated and mixed to prepare a finished product, so that in order to improve the purity of the vehicle urea solution, the biuret in the urea solution needs to be removed, and conventionally, the biuret precipitated crystals are mostly removed by cooling treatment, and when the urea solution is discharged, the biuret precipitated in the urea solution is partially retained or adhered in a mixing tank, and is affected by the shape and the height of the mixing tank, so that the cleaning is inconvenient for staff.
Disclosure of Invention
The present invention has been made in view of the above-described problems occurring in the conventional urea for vehicles. Therefore, the invention provides a high-efficiency production and purification device for the vehicle urea standard solution and a working method thereof, wherein the vehicle urea production tank is divided into working spaces for up-mixing and down-purification, and the integrated design of filtration and ultrafiltration improves the quality of the prepared vehicle urea, ensures continuous production and improves the production efficiency of the vehicle urea; meanwhile, the structures such as the stirring mechanism, the lifting mechanism and the filtration ultrafiltration are improved, so that the purification device can realize the functions of repeated cleaning and fine filtration of impurities in the tank, avoid the influence of the impurities and improve the purification effect.
The technical scheme of the invention is realized as follows: an efficient production and purification device for a vehicle urea standard solution comprises:
the mixing tank is used for mixing and purifying urea solution; a mixing space and a purifying space are formed in the mixing tank, a feeding hole is formed in the top end of the mixing tank, and a liquid discharge pipe is arranged at the bottom end of the mixing tank;
the temperature adjusting mechanism is used for controlling the temperature of the inner cavity of the mixing tank and is arranged on the outer wall of the mixing tank;
the stirring mechanism is used for stirring urea solution and comprises a stirring part arranged in the mixing space and a scraping part arranged in the purifying space, wherein the stirring part is used for accelerating urea to be far away from and mixed with high-purity water, and the scraping part is used for assisting in removing attachments on the inner wall of the purifying space;
the lifting mechanism is used for lifting the stirring mechanism and is arranged on the stirring mechanism;
the filtering mechanism is arranged at the output end of the mixing tank and is used for primarily filtering urea solution;
the ultra-purification mechanism is arranged at the output end of the filtering mechanism and is used for ultra-purifying the urea solution;
when the lifting mechanism is driven, the mixing space and the purifying space are converted into a partition state or a partition state.
Further, the stirring part comprises a driving piece and a stirring piece, wherein the driving piece is installed on the mixing space in a penetrating way, and the stirring piece is installed at one end of the driving piece, which is located in the mixing space.
Further, the driving piece comprises a motor, a first clamping block and a second clamping block which are arranged on a motor rotating shaft, and the first clamping block and the second clamping block are arranged along the axial direction of the motor rotating shaft;
the stirring piece comprises a driving disc and a sealing claw, wherein a connecting through hole is formed at the axis of the sealing claw in a penetrating way, and a second clamping groove matched with the second clamping block in shape is formed at the axis of the driving disc;
the driving disc is penetrated and formed with a liquid discharging channel for communicating the mixing space and the purifying space, openings at two ends of the connecting through hole are matched with the shape of the first clamping block, and the inner wall of the connecting through hole positioned in the middle part is inwards concave to form a first clamping groove matched with the shape of the first clamping block; when the first clamping block abuts against the inner bottom wall of the first clamping groove, the sealing claw is abutted and fixed on the driving disc, and the driving disc and the sealing claw are driven by the motor together to stir urea solution;
when the first clamping block is propped against the inner top wall of the first clamping groove, the sealing claw is separated from the driving disc, and the sealing claw is driven by the motor to stir urea solution;
the scraping part comprises a driving rod fixedly installed on the driving disc and a scraping claw fixedly installed on the driving rod, the scraping claw comprises an arc scraping plate and a scraping rod perpendicular to the arc scraping plate, and the arc scraping plate and the scraping rod are all attached to the inner wall of the purification space.
Further, the temperature adjustment mechanism comprises a heating part and a cooling part, wherein the heating part is attached to the outer wall of the mixing space and used for improving the internal environment temperature of the mixing space, and the cooling part is attached to the purifying space and used for reducing the internal environment temperature of the purifying space.
Further, the filtering mechanism comprises a filtering piece, the filtering piece comprises a filtrate barrel and a filtering bucket, the filtering bucket is arranged inside the filtrate barrel, and the liquid draining pipe is arranged on the inner wall, above the filtering bucket, of the filtrate barrel in a penetrating mode.
Further, the ultra-purification mechanism comprises an ultrafiltration device and a finished product tank, wherein an inlet of the ultrafiltration device is communicated with the filtrate barrel, an outlet of the ultrafiltration device is communicated with the finished product tank, and a waste liquid discharge end of the ultrafiltration device is communicated with the waste liquid tank.
Further, the ultrafiltration equipment includes two at least ultrafiltration barrels, every all be equipped with cylindric ultrafiltration filtration storehouse in the inner chamber of ultrafiltration barrel, and connect through the communication pipe between the ultrafiltration filtration storehouse of every ultrafiltration barrel, attach the setting of water permeable net membrane and its inside packing ultrafiltration filter media in the ultrafiltration filtration storehouse, and ultrafiltration filtration storehouse switch on ultrafiltration exit tube, ultrafiltration exit tube switch on finished product jar, every ultrafiltration intake tube is all installed to the top center part of ultrafiltration barrel, ultrafiltration intake tube with the central axis of ultrafiltration filtration storehouse is the benchmark and is prolonged the setting, extends to the bottom and the opening of ultrafiltration barrel, one of them install ultrafiltration waste liquid discharge pipe on the top side of ultrafiltration barrel, every the ultrafiltration barrel still is equipped with the back flush pipe that is used for washing ultrafiltration filtration storehouse, back flush pipe switch on ultrafiltration filtration storehouse.
Further, two communication pipes are arranged up and down in the ultrafiltration barrel, the upper communication pipe is communicated with the ultrafiltration outlet pipe, the lower communication pipe is communicated with the backwashing pipe, the ultrafiltration inlet pipe is provided with a flowmeter, and the ultrafiltration inlet pipe, the ultrafiltration outlet pipe and the backwashing pipe are provided with one-way valves and valves.
A working method of a vehicle urea standard solution high-efficiency production and purification device, comprising the following steps:
s1, pouring urea raw materials and high-purity water into a mixing tank through a feed inlet according to a specified proportion;
s2, starting a motor and a toggle button, stirring urea solution in a mixing tank, and increasing the internal environment temperature in a mixing space to accelerate dissolution of urea raw materials;
s3, after the urea raw material is fully dissolved, rotating the lifting sleeve, moving the motor upwards to separate the second clamping block from the driving disc, and removing the sealing claw from the liquid discharging channel to enable urea solution in the mixing space to be converged into the purifying space;
s4, stirring the button to cool the environment in the purification space, so that biuret in the urea solution can be separated out to form crystals;
s5, opening a valve on a drain pipe connected with the ultrafiltration device, starting the ultrafiltration device, conveying the urea solution in the mixing tank into a filter bucket through the drain pipe, filtering biuret crystals in the urea solution, and collecting the filtered urea solution after ultra-fine filtration by the ultrafiltration device.
Further, the method also comprises the step of cleaning the mixing tank, as follows:
the method comprises the steps that firstly, a driving screw tube is rotated, a lifting sleeve is driven to move downwards, the lifting sleeve drives a machine base to move downwards, the machine base drives a motor to move downwards synchronously, the motor drives a first clamping block and a second clamping block to move downwards through a rotating shaft, the second clamping block is inserted into a second clamping groove, when the second clamping block is completely inserted into the second clamping groove, a sealing claw is pressed downwards by the first clamping block and is abutted against the surface of a driving disc, the sealing claw has a blocking effect on a liquid discharging channel, clear water is injected into a mixing tank, the motor is started, and the motor drives the sealing claw and the driving disc to stir the clear water in the mixing tank together through the rotating shaft to assist in flushing the inner wall of a mixing space;
when the purification space is cleaned, the driving screw pipe is reversely rotated, the lifting sleeve is driven to move upwards, the lifting sleeve drives the machine base to move upwards, the machine base drives the motor to move upwards synchronously, the motor drives the first clamping block and the second clamping block to move upwards through the rotating shaft, the first clamping block drives the sealing jaw to move away from the top of the driving disc, the liquid discharging channel is opened, so that clean water in the mixing space is collected into the purification space, in the process, the motor can be started, and the motor drives the sealing jaw to rotate to stir urea mixed liquid through the first clamping block, so that the residual of the impurities at the bottom of the sediment in the mixing space is reduced;
step three, after clean water is completely gathered into the purification space, the driving screw is rotated again, the motor is moved back to the initial position, and the second clamping block is inserted into the second clamping groove again; meanwhile, in the process of cleaning the purification space, the motor is started, the motor drives the driving disc to drive the driving rod to rotate through the rotating shaft, the driving rod drives the scraping claw to rotate, the arc scraping plate scrapes and cleans biuret crystals on the inner bottom wall of the purification space, and the scraping rod scrapes and cleans the biuret crystals on the side wall of the purification space;
and step four, after the cleaning is finished, the motor continuously drives the scraping claw to rotate, the arc scraping plate assists the submerged biuret crystal to discharge the purifying space, the valve on the drain pipe is opened, the drain pipe valve connected with the drain pipe is opened, the scraped biuret crystal is gathered into the filtering mechanism along with clean water, the filtered clean water enters the drain pipe through the drain pipe to be discharged, and the biuret crystal is collected in the filtering mechanism.
The invention has the following beneficial effects:
on the basis of the existing mixing tank body, the invention separates the space in the mixing tank into the mixing space and the purifying space up and down so as to realize the functions of heating, mixing, cooling and purifying in one group of tank bodies, and simultaneously improves the quality of the prepared urea for the vehicle by the integrated design of filtration and ultrafiltration, ensures the continuous production and improves the production efficiency of the urea for the vehicle.
Through the top cap upper bearing installation drive solenoid at the blending tank to set up the frame through lift sleeve pipe and drive solenoid threaded connection, rotate the drive solenoid in order to realize the adjustment to frame height, and then reach the regulation to motor height, through setting up first fixture block and second fixture block in the pivot bottom of motor, and set up sealed claw to follow first fixture block and shift up in step, with the sealed claw joint of realization first fixture block all the time, and then realize the in-process of discharging the clear water that washes in the mixing space into the purification space, the motor can drive sealed claw rotation stirring mixing space in the clear water, make impurity can follow clear water outflow mixing space.
According to the invention, the driving rod and the scraping claw are arranged below the driving disc, and the motor is used for rotating to drive the driving disc to rotate so as to drive the scraping claw to rotate, so that the biuret crystal in the purification space is scraped and cleaned. In summary, the invention divides the vehicle urea production tank into working spaces for up-mixing and down-purifying, and integrates the filtration and ultrafiltration, thereby improving the quality of the prepared vehicle urea, ensuring the continuous production and improving the production efficiency of the vehicle urea; meanwhile, the structures such as the stirring mechanism, the lifting mechanism and the filtration ultrafiltration are improved, so that the purification device can realize the functions of repeated cleaning and fine filtration of impurities in the tank, avoid the influence of the impurities and improve the purification effect.
Drawings
FIG. 1 is a schematic view of the overall structure of view A of the present invention;
FIG. 2 is a schematic view of a B-view structure of the present invention;
FIG. 3 is an enlarged view of portion A of FIG. 2 in accordance with the present invention;
FIG. 4 is a cross-sectional view of the mixing tank of the present invention;
FIG. 5 is an enlarged view of portion B of FIG. 4 in accordance with the present invention;
FIG. 6 is a schematic view of the structure of the scraping pawl of the present invention;
FIG. 7 is a schematic view of a housing structure of the present invention;
FIG. 8 is an enlarged view of section C of FIG. 7 in accordance with the present invention;
FIG. 9 is a schematic view of a first latch according to the present invention;
FIG. 10 is a schematic view of a via structure of the present invention;
FIG. 11 is a schematic view of the piping connections of the ultra-purification mechanism of the present invention;
FIG. 12 is a schematic diagram of the structure of the ultrafiltering vat of the present invention;
fig. 13 is a schematic of the workflow of the present invention.
In the figure: 1. a mixing tank; 1.1, mixing space; 1.2, purifying space; 1.3, a material inlet; 1.4, a liquid discharge pipe; 2. a temperature adjusting mechanism; 2.1, a heating part; 2.2, a cooling part; 3. a stirring mechanism; 4. a stirring section; 5. a scraping section; 5.1, driving rod; 5.2, scraping claws; 6. a lifting mechanism; 6.1, a limit column; 6.2, the stand; 6.3, lifting the sleeve; 6.4, driving the screw; 7. a filtering mechanism; 8. a super-purification mechanism; 8.1, ultrafiltration equipment; 8.1.1, an ultrafiltration barrel; 8.1.2, ultrafiltering into pipe; 8.1.3, ultrafiltration tube; 8.1.4, communicating pipe; 8.1.5, back flushing pipe; 8.1.6, ultrafiltration waste liquid discharge pipe; 8.1.7, ultrafiltration filter bin; 8.2, a finished product tank; 8.3, a waste liquid tank; 9. a driving member; 9.1, a first clamping block; 9.2, a second clamping block; 10. a stirring member; 10.1, driving the disc; 10.1.1, a second clamping groove; 10.1.2, a liquid discharging channel; 10.2, sealing jaws; 10.2.1, connecting through holes; 10.2.2, first clamping groove; 11. a filter; 11.1, a filtrate barrel; 11.2, a filter bucket; 11.2.1, a stent; 11.2.2, a handle; 11.2.3, a filter layer.
Detailed Description
The following description of the technical solutions in the embodiments of the present invention will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 to 12, the invention provides a device for efficiently producing and purifying a urea standard solution for a vehicle, which comprises a mixing tank 1, a temperature adjusting mechanism 2, a stirring mechanism 3, a filtering mechanism 7 and a super-purifying mechanism 8. The inside of mixing tank 1 forms mixing space 1.1 and purification space 1.2, the top of mixing tank 1 is equipped with feed inlet 1.3, fluid-discharge tube 1.4 is installed to the bottom of mixing tank 1, temperature regulating mechanism 2 installs on the outer wall of mixing tank 1, stirring mechanism 3 is including installing stirring portion 4 in mixing space 1.1 and install the scraping portion 5 in purification space 1.2, stirring portion 4 is used for accelerating urea to keep away from and mix with high-purity water, scraping portion 5 is used for assisting the attachment to purifying space 1.2 inner wall to clear away, elevating system 6 installs on stirring mechanism 3, filter mechanism 7 is installed in the output of mixing tank 1, and it is used for carrying out preliminary filtration to urea solution, ultra-purification mechanism 8 is installed in the output of filter mechanism 7, and it is used for carrying out ultra-purification to urea solution, wherein, when elevating system 6 is driven, mixing space 1.1 and purification space 1.2 change into from the communication state to cut off or change into the intercommunication from the state.
Optionally, the output end of the filtering mechanism 7 is connected with two groups of liquid outlet pipes, valves are arranged on the two groups of liquid outlet pipes, one group of liquid outlet pipes is connected to the ultra-purification mechanism 8, and the other group of liquid outlet pipes is used for connecting a drain pipe.
When the urea solution purification device is used, urea raw materials and high-purity water are put into a mixing tank 1 through a feed port 1.3 in proportion, a temperature regulating mechanism 2 and a stirring mechanism 3 are started, the temperature regulating mechanism 2 heats the environment temperature in the mixing space 1.1, the stirring mechanism 3 stirs urea solution obtained by mixing the urea raw materials in the mixing space 1.1 with the high-purity water, the urea raw materials are fully dissolved, a lifting mechanism 6 is driven, the mixing space 1.1 is communicated with a purification space 1.2, the urea solution enters the purification space 1.2, a heating mode of the temperature regulating mechanism 2 is closed, the temperature reducing mode of the temperature regulating mechanism 2 is started to reduce the environment temperature in the purification space 1.2, when the temperature is reduced to 4 ℃, the temperature in the urea solution is reduced to 4 ℃, after the temperature is reduced for a specified period, a valve on a liquid discharge pipe 1.4 is opened, a liquid outlet pipe valve connected with an ultra-purification mechanism 8 is opened, the urea solution mixed with the biuret crystal is discharged into a filtering mechanism 7, the biuret crystal is intercepted by the filtering mechanism 7, the urea crystal is automatically sucked into the ultra-purification mechanism 8, and then is subjected to ultra-purification and fine filtration.
When the mixing tank 1 is cleaned, the stirring part 4 is adjusted to the highest position, clean water is injected into the mixing tank 1 through the feed port 1.3, the stirring part 4 is started, the stirring part 4 drives clean water in the mixing space 1.1 to rotate so as to flush the inner wall of the mixing space 1.1, after flushing, the lifting mechanism 6 is operated to partially move up the stirring part 4, so that the mixing space 1.1 and the purifying space 1.2 are converted into a communicating state, clean water is injected into the purifying space 1.2, the lifting mechanism 6 is operated to move down the stirring part 4 to the initial position, the stirring part 4 is started, the stirring part 4 drives the scraping part 5 to rotate, the scraping part 5 rotates so as to scrape and clean biuret crystals adhered on the inner wall of the purifying space 1.2, after cleaning, the motor continuously runs, the valve of the liquid discharge pipe 1.4 is opened, the clean water mixed with the biuret crystals is injected into the filtering mechanism 7 for filtering treatment, and the scraping part 5 continuously rotates in the process so as to assist the biuret crystals to discharge the purifying space 1.2.
The stirring section 4 comprises a driving member 9 and a stirring member 10, the driving member 9 is installed on the mixing space 1.1 in a penetrating manner, and the stirring member 10 is installed at one end of the driving member 9 located in the mixing space 1.1.
The driving piece 9 comprises a motor, a first clamping block 9.1 and a second clamping block 9.2 which are arranged on the motor rotating shaft, and the first clamping block 9.1 and the second clamping block 9.2 are arranged along the axial direction of the motor rotating shaft.
According to some embodiments, the lifting mechanism 6 comprises a limit column 6.1, a base 6.2, a lifting sleeve 6.3 and a driving screw 6.4, wherein the limit column 6.1 is fixedly installed on a top cover of the mixing tank 1, the base 6.2 can vertically move and penetrate through the limit column 6.1, the base 6.2 is installed on the surface of a motor in a clamping mode, a rotating shaft of the motor rotates and penetrates through the base 6.2, the lifting sleeve 6.3 is sleeved on the rotating shaft of the motor, the top end of the lifting sleeve 6.3 is fixedly installed on the base 6.2, the driving screw 6.4 is sleeved at the bottom end of the lifting sleeve 6.3 through threads, a bottom end bearing of the driving screw 6.4 is installed on a top cover of the mixing tank 1, the lifting sleeve 6.3 can be driven to adjust the height up and down through rotating the driving screw 6.4, and then the height of the driving base 6.2 is adjusted. Optionally, the first clamping block 9.1 and the second clamping block 9.2 are arranged from top to bottom along the axial direction of the rotating shaft.
The stirring piece 10 comprises a driving disc 10.1 and a sealing claw 10.2, wherein a connecting through hole 10.2.1 is formed at the axis of the sealing claw 10.2 in a penetrating way, and a second clamping groove 10.1.1 matched with the second clamping block 9.2 in shape is formed at the axis of the driving disc 10.1. Optionally, the drive disk 10.1 is mounted in the mixing tank 1 in an interference fit.
In order to facilitate the smooth insertion of the second clamping block 9.2 into the second clamping groove 10.1.1, a guiding groove with the same rotation direction is relatively arranged at the top edge of the second clamping groove 10.1.1 for guiding the second clamping block 9.2 to butt-joint with the second clamping groove 10.1.1. Optionally, corners of the bottom end of the second clamping block 9.2 are chamfered, so that the second clamping block 9.2 is driven to turn by the inner wall of the guide groove. The driving disc 10.1 is penetrated and formed with a liquid discharging channel 10.1.2 for communicating the mixing space 1.1 and the purifying space 1.2, openings at two ends of the connecting through hole 10.2.1 are matched with the shape of the first clamping block 9.1, and the inner wall of the connecting through hole 10.2.1 positioned in the middle part is concave to form a first clamping groove 10.2.2 matched with the shape of the first clamping block 9.1; when the first clamping block 9.1 abuts against the inner bottom wall of the first clamping groove 10.2.2, the sealing claw 10.2 abuts against and is fixed on the driving disc 10.1, and the driving disc 10.1 and the sealing claw 10.2 are driven by the motor together to stir urea solution; when the first clamping block 9.1 abuts against the inner top wall of the first clamping groove 10.2.2, the sealing claw 10.2 is separated from the driving disc 10.1, and the sealing claw 10.2 is driven by the motor to stir urea solution.
Optionally, the width of the first clamping block 9.1 is smaller than that of the second clamping block 9.2, the bottom opening shape of the connecting through hole 10.2.1 is matched with the shape of the rotating shaft, the channel shape at the top end of the connecting through hole 10.2.1 is matched with the shape of the first clamping block 9.1, when the first clamping block 9.1 is completely inserted into the connecting through hole 10.2.1, the top of the second clamping block 9.2 abuts against the bottom of the sealing jaw 10.2, when the motor is at the lowest position, the first clamping block 9.1 presses down the sealing jaw 10.2 to tightly press the sealing jaw 10.2 on the driving disc 10.1, and when the motor is at the highest position, the top of the second clamping block 9.2 supports the bottom height of the sealing jaw 10.2, so that the sealing jaw 10.2 is kept at a certain height above the driving disc 10.1, and the opening of the liquid discharging channel 10.1.2 is realized.
According to some embodiments, the scraping portion 5 comprises a driving rod 5.1 fixedly mounted on the driving disc 10.1 and a scraping claw 5.2 fixedly mounted on the driving rod 5.1, wherein the scraping claw 5.2 comprises an arc-shaped scraping plate and a scraping rod perpendicular to the arc-shaped scraping plate, and the arc-shaped scraping plate and the scraping rod are both attached to the inner wall of the purifying space 1.2.
Optionally, in order to facilitate the replacement of the scraping claw 5.2, the scraping claw 5.2 is connected with the bottom end of the driving rod 5.1 through a penetrating bolt structure, and the scraping rod is in threaded connection with the top of the arc scraping plate through a screw rod installed at the bottom end.
In the process of cleaning the mixing tank 1, the driving screw 6.4 is rotated, the lifting sleeve 6.3 is driven to move downwards, the lifting sleeve 6.3 drives the base 6.2 to move downwards, the base 6.2 drives the motor to move downwards synchronously, the motor drives the first clamping block 9.1 and the second clamping block 9.2 to move downwards through the rotating shaft, the second clamping block 9.2 is inserted into the second clamping groove 10.1.1, when the second clamping block 9.2 is completely inserted into the second clamping groove 10.1.1, the first clamping block 9.1 presses down the sealing jaw 10.2, the sealing jaw 10.2 is abutted against the surface of the driving disc 10.1, the sealing jaw 10.2 forms a blocking effect on the liquid discharging channel 10.1.2, clean water is injected into the mixing tank 1, the motor drives the sealing jaw 10.2 and the driving disc 10.1 to stir clean water in the mixing tank 1 together through the rotating shaft, and the inner wall of the mixing space 1.1 is assisted in flushing;
when the purification space 1.2 is cleaned, the driving screw pipe 6.4 is reversely rotated, the lifting sleeve 6.3 is driven to move upwards, the lifting sleeve 6.3 drives the base 6.2 to move upwards, the base 6.2 drives the motor to synchronously move upwards, the motor drives the first clamping block 9.1 and the second clamping block 9.2 to move upwards through the rotating shaft, the first clamping block 9.1 drives the sealing jaw 10.2 to be removed from the top of the driving disc 10.1, the lower liquid channel 10.1.2 is opened, so that clean water in the mixing space 1.1 is gathered into the purification space 1.2, in the process, the motor can be started, and the motor drives the sealing jaw 10.2 to rotate through the first clamping block 9.1 to stir urea mixed liquid, so that the residual of sunk impurities in the mixing space 1.1 is reduced;
after clean water is completely gathered into the purifying space 1.2, the driving screw 6.4 is rotated again, and the motor is moved back to the initial position so that the second clamping block 9.2 is inserted into the second clamping groove 10.1.1 again;
in the process of cleaning the purification space 1.2, starting a motor, driving a driving disc 10.1 to rotate through a rotating shaft by the motor, driving a driving rod 5.1 to rotate by the driving disc 10.1, driving a scraping claw 5.2 to rotate by the driving rod 5.1, scraping and cleaning biuret crystals on the inner bottom wall of the purification space 1.2 by an arc scraping plate, and scraping and cleaning the biuret crystals on the side wall of the purification space 1.2 by a scraping rod;
after the cleaning is finished, the motor continuously drives the scraping claw 5.2 to rotate, the arc scraping plate assists the submerged biuret crystal to discharge the purifying space 1.2, a valve on the liquid discharge pipe 1.4 is opened, a liquid outlet pipe valve connected with the sewage discharge pipe is opened, the scraped biuret crystal is gathered into the filtering mechanism 7 along with clean water, the filtered clean water enters the sewage discharge pipe through the liquid outlet pipe to be discharged, and the biuret crystal is collected in the filtering mechanism 7.
The temperature regulating mechanism 2 comprises a heating part 2.1 and a cooling part 2.2, wherein the heating part 2.1 is attached to the outer wall of the mixing space 1.1 and is used for improving the environment temperature in the mixing space 1.1, and the cooling part 2.2 is attached to the purifying space 1.2 and is used for reducing the environment temperature in the purifying space 1.2.
According to some embodiments, the heating part 2.1 and the cooling part 2.2 each include a button, a control module and a circulating water pipe, the circulating water pipe is wound around the outer surface of the mixing tank 1, the heating part 2.1 further includes a hot water circulating pump, the cooling part 2.2 further includes a cooling circulating pump, the button is electrically connected with the control module, and the output end of the control module is respectively in communication or electrical connection with the hot water circulating pump and the cooling circulating pump, so that the hot water circulating pump or the cooling circulating pump can work through the control button.
The filtering mechanism 7 comprises a filtering piece 11, the filtering piece 11 comprises a filtrate barrel 11.1 and a filtering hopper 11.2, the filtering hopper 11.2 is arranged inside the filtrate barrel 11.1, and the liquid discharge pipe 1.4 is arranged on the inner wall, above the filtering hopper 11.2, of the filtrate barrel 11.1 in a penetrating mode.
According to some embodiments, the bottom end of the filtrate tank 11.1 is provided with a cone structure, the bottom tip of the filtrate tank 11.1 is provided with a total water outlet pipe in a penetrating manner, the total water outlet pipe is respectively communicated with two groups of water outlet pipes, the inner wall of the filtrate tank 11.1 is provided with a supporting ring, the filter bucket 11.2 comprises a support 11.2.1, a handle 11.2.2 and a filter layer 11.2.3, the support 11.2.1 is arranged along the top of the supporting ring, the handle 11.2.2 is fixedly arranged at the top of the support 11.2.1, the handle 11.2.2 is convenient for a worker to take out the filter bucket 11.2 for collecting biuret crystals, the filter layer 11.2.3 is arranged along the support 11.2.1, and the filter layer 11.2.3 is arranged in a round table shape. Optionally, the filter layer 11.2.3 is provided as a metal sintered mesh or ion exchange resin block.
Further, the ultra-purification mechanism 8 comprises an ultra-filtration device 8.1 and a finished product tank 8.2, wherein the inlet of the ultra-filtration device 8.1 is communicated with the filtrate tank 11.1, the outlet of the ultra-filtration device is communicated with the finished product tank 8.2, and the waste liquid discharge end of the ultra-filtration device 8.1 is communicated with the waste liquid tank 8.3.
The ultrafiltration device 8.1 in this embodiment specifically includes at least two ultrafiltration barrels 8.1.1, a cylindrical ultrafiltration filter chamber 8.1.7 is disposed in an inner cavity of each ultrafiltration barrel 8.1.1, the ultrafiltration filter chambers 8.1.7 of each ultrafiltration barrel 8.1.1 are connected through a communication pipe 8.1.4, a water permeable net membrane is attached to the ultrafiltration filter chamber 8.1.7 and is filled with ultrafiltration filter materials therein, the ultrafiltration filter chamber 8.1.7 is connected with an ultrafiltration tube 8.1.3, the ultrafiltration tube 8.1.3 is connected with a finished product tank 8.2, an ultrafiltration inlet tube 8.1.2 is mounted at a top central portion of each ultrafiltration barrel 8.1.1, the ultrafiltration inlet tube 8.1.2 is extended and disposed with a central axis of the ultrafiltration filter chamber 8.1.7 as a reference, the ultrafiltration filter chambers are extended to a bottom of the ultrafiltration barrels 8.1.1.1 and are opened, an ultrafiltration waste liquid discharge pipe 8.1.6 is mounted on a top side surface of one ultrafiltration barrel 8.1.1, a backwash tube 8.1.5 for flushing the ultrafiltration filter chamber 8.1.7 is further disposed on a top side surface of the ultrafiltration barrel 8.1.1.1.5, and the ultrafiltration chamber 8.1.7 is connected with the ultrafiltration tube.
Further, two communication pipes 8.1.4 are arranged up and down in the ultrafiltration barrel 8.1.1, the communication pipe 8.1.4 at the upper part is communicated with the ultrafiltration pipe 8.1.3, the communication pipe 8.1.4 at the lower part is communicated with the backwash pipe 8.1.5, the ultrafiltration inlet pipe 8.1.2 is provided with a flowmeter, and the ultrafiltration inlet pipe 8.1.2, the ultrafiltration pipe 8.1.3 and the backwash pipe 8.1.5 are respectively provided with a one-way valve and a valve.
In the production and purification process of urea solution, firstly, a motor is adjusted to the lowest position, urea raw materials and high-purity water are mixed into a mixing tank 1 in proportion, the motor is started, a button is stirred, the button controls a hot water circulating pump to operate through a control module, the hot water circulating pump continuously inputs hot water into a circulating water pipe to heat the outer wall of a mixing space 1.1, the environment temperature in the mixing space 1.1 is increased, urea raw material dissolution is assisted and accelerated, the motor drives a driving disc 10.1 and a sealing jaw 10.2 to rotate together through a first clamping block 9.1 and a second clamping block 9.2, the driving disc 10.1 and the sealing jaw 10.2 drive the solution in the mixing space 1.1 to form a vortex, urea raw material dissolution is accelerated, and after stirring and heating are carried out for a certain period of time, the motor and the hot water circulating pump are suspended;
the driving screw tube 6.4 is rotated, the threads on the inner wall of the driving screw tube 6.4 drive the lifting sleeve 6.3 to move upwards, the lifting sleeve 6.3 drives the base 6.2 to move upwards, the base 6.2 drives the motor to move upwards integrally, the rotating shaft of the motor drives the first clamping block 9.1 and the second clamping block 9.2 to move upwards synchronously, the second clamping block 9.2 moves out of the second clamping groove 10.1.1, the first clamping block 9.1 or the second clamping block 9.2 supports the sealing claw 10.2 to move upwards away from the top of the driving disc 10.1, the liquid discharging channel 10.1.2 is opened, and urea solution in the mixing space 1.1 enters the purifying space 1.2;
in the process of removing biuret in urea solution, a button is stirred, the button controls a cooling circulation pump to operate through a control module, the cooling circulation pump continuously inputs low-temperature water flow into a circulation water pipe to heat the outer wall of a purification space 1.2, the environment temperature in the purification space 1.2 is reduced to room temperature or 4 ℃, so that the biuret in the urea solution can be separated out of crystals, and after the cooling circulation pump is cooled for a certain period of time, the cooling circulation pump is turned off;
when the urea solution needs to be preliminarily filtered, a valve of a liquid discharge pipe 1.4 is opened, a valve on a liquid discharge pipe connected with ultrafiltration equipment 8.1 is opened, the urea solution mixed with biuret is filtered through a filter bucket 11.2, biuret crystals are intercepted in the filter bucket 11.2, and the filtered urea solution enters the ultrafiltration equipment 8.1 for fine filtration and purification and is finally collected in a finished product tank 8.2.
Based on the above, the invention separates the space in the mixing tank into the mixing space and the purifying space on the basis of the existing mixing tank, so as to realize the functions of heating, mixing, cooling and purifying in one group of tanks, and simultaneously, the invention improves the quality of the prepared urea for vehicles, ensures the continuous production and improves the production efficiency of the urea for vehicles through the integrated design of filtration and ultrafiltration. Through the top cap upper bearing installation drive solenoid at the blending tank to set up the frame through lift sleeve pipe and drive solenoid threaded connection, rotate the drive solenoid in order to realize the adjustment to frame height, and then reach the regulation to motor height, through setting up first fixture block and second fixture block in the pivot bottom of motor, and set up sealed claw to follow first fixture block and shift up in step, with the sealed claw joint of realization first fixture block all the time, and then realize the in-process of discharging the clear water that washes in the mixing space into the purification space, the motor can drive sealed claw rotation stirring mixing space in the clear water, make impurity can follow clear water outflow mixing space. Through setting up actuating lever and scraping claw under the driving disk, utilize the motor to rotate and drive the driving disk and rotate and then drive scraping claw and rotate, and then realize scraping the clearance to the biuret crystal in the purification space
Referring to fig. 13, the invention further provides a working method of the device for efficiently producing and purifying the urea standard solution for the vehicle, which comprises the following steps:
s1, pouring urea raw materials and high-purity water into a mixing tank 1 through a feed inlet 1.3 according to a specified proportion;
s2, starting a motor and a toggle button, stirring urea solution in the mixing tank 1, and increasing the internal temperature in the mixing space 1.1 to accelerate dissolution of urea raw materials;
s3, after the urea raw material is fully dissolved, rotating the lifting mechanism 6, moving the motor upwards to separate the second clamping block 9.2 from the driving disc 10.1, and removing the sealing claw 10.2 from the liquid discharging channel 10.1.2 to enable urea solution in the mixing space 1.1 to be converged into the purifying space 1.2;
s4, stirring the button to cool the environment in the purification space 1.2, so that biuret in the urea solution can be separated out to form crystals;
s5, opening a valve on a drain pipe 1.4 connected with the ultrafiltration device 8.1, starting the ultrafiltration device 8.1, conveying the urea solution in the mixing tank 1 into a filter bucket 11.2 through the drain pipe 1.4, filtering biuret crystals in the urea solution, and collecting the filtered urea solution after ultra-fine filtration by the ultrafiltration device 8.1 in a finished product tank 8.2.
In conclusion, the invention divides the vehicle urea production tank into working spaces for up-mixing and down-purifying, and integrates the filtration and ultrafiltration, thereby improving the quality of the prepared vehicle urea, ensuring the continuous production and improving the production efficiency of the vehicle urea; meanwhile, the structures such as the stirring mechanism, the lifting mechanism and the filtration ultrafiltration are improved, so that the purification device can realize the functions of repeated cleaning and fine filtration of impurities in the tank, avoid the influence of the impurities and improve the purification effect.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (10)
1. The utility model provides a purification device is produced to automobile-used urea standard solution high efficiency which characterized in that includes:
a mixing tank (1) for mixing and purifying urea solution; a mixing space (1.1) and a purifying space (1.2) are formed in the mixing tank, a feeding port (1.3) is formed in the top end of the mixing tank (1), and a liquid discharge pipe (1.4) is arranged at the bottom end of the mixing tank (1);
the temperature adjusting mechanism (2) is used for controlling the temperature of the inner cavity of the mixing tank (1) and is arranged on the outer wall of the mixing tank (1);
the stirring mechanism (3) is used for stirring urea solution and comprises a stirring part (4) arranged in the mixing space (1.1) and a scraping part (5) arranged in the purifying space (1.2), the stirring part (4) is used for accelerating urea to be far away from being mixed with high-purity water, and the scraping part (5) is used for assisting in removing attachments on the inner wall of the purifying space (1.2);
the lifting mechanism (6) is used for lifting the stirring mechanism (3) and is arranged on the stirring mechanism (3);
the filtering mechanism (7) is arranged at the output end of the mixing tank (1) and is used for carrying out preliminary filtration on urea solution;
the ultra-purification mechanism (8) is arranged at the output end of the filtering mechanism (7) and is used for ultra-purifying the urea solution;
when the lifting mechanism (6) is driven, the mixing space (1.1) and the purifying space (1.2) are converted into a partition state from a communication state or are converted into a communication state from a partition state.
2. The efficient production and purification device for the vehicle urea standard solution according to claim 1, wherein the stirring part (4) comprises a driving piece (9) and a stirring piece (10), the driving piece (9) is installed on the mixing space (1.1) in a penetrating manner, and the stirring piece (10) is installed at one end of the driving piece (9) located in the mixing space (1.1).
3. The efficient production and purification device for the urea standard solution for the vehicle according to claim 2, wherein the driving piece (9) comprises a motor, a first clamping block (9.1) and a second clamping block (9.2) which are arranged on a motor rotating shaft, and the first clamping block (9.1) and the second clamping block (9.2) are arranged along the axial direction of the motor rotating shaft;
the stirring piece (10) comprises a driving disc (10.1) and a sealing claw (10.2), a connecting through hole (10.2.1) is formed at the axis of the sealing claw (10.2) in a penetrating mode, and a second clamping groove (10.1.1) matched with the second clamping block (9.2) in shape is formed at the axis of the driving disc (10.1);
the driving disc (10.1) is penetrated with a liquid discharging channel (10.1.2) for communicating the mixing space (1.1) and the purifying space (1.2), openings at two ends of the connecting through hole (10.2.1) are matched with the shape of the first clamping block (9.1), and the inner wall of the connecting through hole (10.2.1) positioned in the middle is concaved inwards to form a first clamping groove (10.2.2) matched with the shape of the first clamping block (9.1); when the first clamping block (9.1) is abutted against the inner bottom wall of the first clamping groove (10.2.2), the sealing claw (10.2) is abutted against and fixed on the driving disc (10.1), and the driving disc (10.1) and the sealing claw (10.2) are driven by the motor to stir urea solution;
when the first clamping block (9.1) is propped against the inner top wall of the first clamping groove (10.2.2), the sealing claw (10.2) is separated from the driving disc (10.1), and the sealing claw (10.2) is driven by the motor to stir urea solution;
the scraping part (5) comprises a driving rod (5.1) fixedly installed on a driving disc (10.1) and a scraping claw (5.2) fixedly installed on the driving rod (5.1), the scraping claw (5.2) comprises an arc scraping plate and a scraping rod perpendicular to the arc scraping plate, and the arc scraping plate and the scraping rod are all attached to the inner wall of the purification space (1.2).
4. The efficient production and purification device for the urea standard solution for the vehicle according to claim 1, wherein the temperature adjusting mechanism (2) comprises a heating part (2.1) and a cooling part (2.2), the heating part (2.1) is arranged on the outer wall of the mixing space (1.1) in a fitting way, and is used for improving the environment temperature in the mixing space (1.1), and the cooling part (2.2) is arranged on the purifying space (1.2) in a fitting way, and is used for reducing the environment temperature in the purifying space (1.2).
5. The efficient production and purification device for the vehicular urea standard solution according to claim 1, wherein the filtering mechanism (7) comprises a filtering piece (11), the filtering piece (11) comprises a filtrate barrel (11.1) and a filtering bucket (11.2), the filtering bucket (11.2) is installed inside the filtrate barrel (11.1), and the liquid discharge pipe (1.4) is installed on the inner wall, above the filtering bucket (11.2), of the filtrate barrel (11.1) in a penetrating manner.
6. The efficient production and purification device for the urea standard solution for the vehicle according to claim 5, wherein the ultra-purification mechanism (8) comprises an ultrafiltration device (8.1) and a finished product tank (8.2), an inlet of the ultrafiltration device (8.1) is communicated with the filtrate tank (11.1), an outlet of the ultrafiltration device is communicated with the finished product tank (8.2), and a waste liquid discharge end of the ultrafiltration device (8.1) is communicated with the waste liquid tank (8.3).
7. The efficient production and purification device for the vehicular urea standard solution according to claim 6, wherein the ultrafiltration device (8.1) comprises at least two ultrafiltration barrels (8.1.1), a cylindrical ultrafiltration filter cartridge (8.1.7) is arranged in an inner cavity of each ultrafiltration barrel (8.1.1), the ultrafiltration filter cartridges (8.1.7) of each ultrafiltration barrel (8.1.1) are communicated through a communication pipe (8.1.4), a water permeable net membrane is attached to the ultrafiltration filter cartridge (8.1.7) and filled with ultrafiltration materials inside the ultrafiltration filter cartridge, the ultrafiltration filter cartridge (8.1.7) is communicated with an ultrafiltration pipe (8.1.3), the ultrafiltration pipe (8.1.3) is communicated with a finished product tank (8.2), an ultrafiltration inlet pipe (8.1.2) is arranged at the top center part of each ultrafiltration barrel (8.1.1), the ultrafiltration inlet pipe (8.1.2) is arranged in an extended mode based on the central axis of the ultrafiltration filter cartridge (8.1.7), the ultrafiltration filter cartridge (8.1.7) is extended to the bottom of the ultrafiltration barrel (8.1.1.1) and is provided with an ultrafiltration outlet pipe (8.1.3), and one of the ultrafiltration pipes (671.3) is arranged at the top of the ultrafiltration barrels (8.1.1.1.1.1).
8. The efficient production and purification device for the vehicle urea standard solution according to claim 7, wherein two communication pipes (8.1.4) are arranged up and down in an ultrafiltration barrel (8.1.1), the upper communication pipe (8.1.4) is communicated with an ultrafiltration pipe (8.1.3), the lower communication pipe (8.1.4) is communicated with a back flushing pipe (8.1.5), a flowmeter is arranged on the ultrafiltration inlet pipe (8.1.2), and one-way valves and valves are arranged on the ultrafiltration inlet pipe (8.1.2), the ultrafiltration pipe (8.1.3) and the back flushing pipe (8.1.5).
9. A working method of a high-efficiency production and purification device for a vehicle urea standard solution, which is applied to the high-efficiency production and purification device for the vehicle urea standard solution according to claim 1, and is characterized in that the working method comprises the following steps:
s1, pouring urea raw materials and high-purity water into a mixing tank (1) through a feed port (1.3) according to a specified proportion;
s2, starting a motor and a toggle button, stirring urea solution in the mixing tank (1), and increasing the internal temperature in the mixing space (1.1) to accelerate dissolution of urea raw materials;
s3, after the urea raw material is fully dissolved, rotating the lifting mechanism (6), moving the motor upwards to separate the second clamping block (9.2) from the driving disc (10.1), and removing the sealing claw (10.2) from the liquid discharging channel (10.1.2) to enable urea solution in the mixing space (1.1) to be converged into the purifying space (1.2);
s4, stirring the button to cool the environment in the purification space (1.2) so as to separate out the biuret in the urea solution;
s5, opening a valve on a liquid discharge pipe (1.4) connected with the ultrafiltration equipment (8.1), starting the ultrafiltration equipment (8.1), conveying urea solution in the mixing tank (1) into a filter bucket (11.2) through the liquid discharge pipe (1.4), filtering biuret crystals in the urea solution, and collecting the filtered urea solution in a finished product tank (8.2) after performing ultra-fine filtration treatment by the ultrafiltration equipment (8.1).
10. The working method of the device for efficiently producing and purifying the urea standard solution for the vehicle according to claim 9, further comprising the step of cleaning the mixing tank (1) as follows:
step one, rotating a driving screw (6.4), driving a lifting sleeve (6.3) to move downwards, driving a base (6.2) to move downwards by the lifting sleeve (6.3), driving a motor to move downwards synchronously by the base (6.2), driving a first clamping block (9.1) and a second clamping block (9.2) to move downwards by the motor through a rotating shaft, enabling the second clamping block (9.2) to be inserted into a second clamping groove (10.1.1), pressing a sealing claw (10.2) downwards by the first clamping block (9.1) when the second clamping block (9.2) is completely inserted into the second clamping groove (10.1.1), and abutting the sealing claw (10.2) on the surface of a driving disc (10.1), so that the sealing claw (10.2) forms a blocking effect on a discharging channel (10.1.2), injecting clear water into a mixing tank (1), starting the motor, and driving the sealing claw (10.2) and the driving disc (10.1) to stir clear water in the mixing tank (1) together through the rotating shaft, thereby assisting in flushing the inner wall of the mixing space (1.1);
step two, when the purification space (1.2) is cleaned, the drive screw (6.4) is reversely rotated, the lifting sleeve (6.3) is driven to move upwards, the lifting sleeve (6.3) drives the base (6.2) to move upwards, the base (6.2) drives the motor to synchronously move upwards, the motor drives the first clamping block (9.1) and the second clamping block (9.2) to move upwards through the rotating shaft, the first clamping block (9.1) drives the sealing jaw (10.2) to move away from the top of the drive disc (10.1), the liquid discharging channel (10.1.2) is opened, so that clean water in the mixing space (1.1) is introduced into the purification space (1.2), in the process, the motor can be started, and the motor drives the sealing jaw (10.2) to rotate through the first clamping block (9.1) to stir urea mixed liquid, so that the impurities at the bottom are reduced and remain in the mixing space (1.1);
step three, after clean water is completely gathered into the purification space (1.2), the driving screw pipe (6.4) is rotated again, the motor is moved back to the initial position, and the second clamping block (9.2) is inserted into the second clamping groove (10.1.1) again; meanwhile, in the process of cleaning the purification space (1.2), a motor is started, the motor drives a driving disc (10.1) to rotate through a rotating shaft, the driving disc (10.1) drives a driving rod (5.1) to rotate, the driving rod (5.1) drives a scraping claw (5.2) to rotate, an arc scraping plate scrapes and cleans biuret crystals on the inner bottom wall of the purification space (1.2), and the scraping rod scrapes and cleans the biuret crystals on the side wall of the purification space (1.2);
and step four, after the cleaning is finished, the motor continuously drives the scraping claw (5.2) to rotate, the arc scraping plate assists the submerged biuret crystal to discharge the purifying space (1.2), a valve on the liquid discharge pipe (1.4) is opened, a liquid outlet pipe valve connected with the sewage discharge pipe is opened, the scraped biuret crystal is gathered into the filtering mechanism (7) along with clean water, and the filtered clean water enters the sewage discharge pipe through the liquid outlet pipe to be discharged, and the biuret crystal is collected in the filtering mechanism (7).
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118162017A (en) * | 2024-05-11 | 2024-06-11 | 江苏可兰素环保科技有限公司 | Automatic purification device and method for urea for vehicle |
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| CN117181030B (en) | 2024-04-09 |
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