CN219136671U - Corn starch wet processing soaking system - Google Patents
Corn starch wet processing soaking system Download PDFInfo
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- CN219136671U CN219136671U CN202320079983.7U CN202320079983U CN219136671U CN 219136671 U CN219136671 U CN 219136671U CN 202320079983 U CN202320079983 U CN 202320079983U CN 219136671 U CN219136671 U CN 219136671U
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Abstract
The utility model discloses a corn starch wet processing soaking system, which comprises: the soaking tank group comprises a plurality of groups of soaking tanks which are arranged in parallel; a pumping component is connected between the cleaning tank and the soaking tank group; a liquid adding pipe is connected between the sulfurous acid storage tank and the soaking tank group; the bottom of the spray absorption tower is connected with a liquid collecting barrel, and the liquid collecting barrel is connected with a sulfurous acid storage tank; the sulfur dioxide generator is connected with the bottom of the outer side wall of the spray absorption tower through an air pipe; the corn steep liquor evaporation assembly is communicated with the pipeline between the soaking tank groups; the cooling tower is communicated with a condenser pipeline in the corn steep liquor evaporation assembly; the corn kernel softening device has the advantages that the corn kernel softening effect is good, the free release of soluble components is sufficient, and the starch and byproduct extraction rate is high.
Description
Technical Field
The utility model belongs to the technical field of corn starch processing, and particularly relates to a corn starch wet processing soaking system.
Background
Corn steep is to soften corn, disperse protein network in endosperm cells, separate starch from non-starch, steep out soluble substances in corn kernels, inhibit microbial activity, and prevent material from rotting and deteriorating.
The existing corn starch processing system has low efficiency, poor soaking effect, low soaking solution utilization rate and unsatisfactory corn kernel softening effect, so that the extraction rate of corn starch and byproducts is low.
Chinese patent CN201810447844.9 provides a comprehensive treatment system for purifying raw materials in the corn starch processing process and a treatment process thereof, which can effectively remove dust at a grain unloading hopper, clean up big and small impurities, fine sand, metal, side by side stones, corncobs and the like in corn, improve the treatment quality of a subsequent soaking process, but have low soaking liquid utilization rate, strict requirements on equipment arrangement environment by the combined treatment system, poor universality and low extraction rate.
Therefore, how to provide a corn starch wet processing soaking system with good corn kernel softening effect and sufficient release of soluble components, and improving the extraction rate of starch and byproducts is a problem to be solved by those skilled in the art.
Disclosure of Invention
In view of the above, the utility model provides a corn starch wet processing soaking system, which has high starch extraction rate.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a corn starch wet process soaking system, comprising:
the soaking tank group comprises a plurality of groups of soaking tanks which are arranged in parallel;
the cleaning tank is connected with the soaking tank group, and a pumping component is connected between the cleaning tank and the soaking tank group;
a liquid adding pipe is connected between the sulfurous acid storage tank and the soaking tank group;
the spray absorption tower is internally fixed with a spray assembly, the bottom of the spray absorption tower is connected with a liquid collecting barrel, and a guide tube is connected between the liquid collecting barrel and the sulfurous acid storage tank;
the sulfur dioxide generator is connected with an air pipe, and the air pipe is fixedly connected with the bottom of the outer side wall of the spray absorption tower;
the corn steep liquor evaporation assembly is communicated with a thin corn steep liquor tank and a thick corn steep liquor tank in the soaking tank set through pipelines, the thin corn steep liquor soaking liquid after the soaking tank set is soaked is discharged into the thin corn steep liquor tank, the thin corn steep liquor in the thin corn steep liquor tank is pumped into the corn steep liquor evaporation assembly for concentration, and the corn steep liquor after the concentration of the corn steep liquor evaporation assembly is pumped into the thick corn steep liquor tank of the soaking tank set for standby;
a cooling tower in communication with a condenser tube in the corn steep liquor evaporation assembly; the liquid adding pipe and the guide pipe are connected with a power pump, and the pipeline between the corn steep liquor evaporation assembly and the soaking tank set and the pipeline between the cooling tower and the condenser are connected with the power pump.
The beneficial effects of the utility model are as follows: the method comprises the steps that a cleaning tank further cleans the clean corn kernels after impurity removal, the clean corn kernels are conveyed into a soaking tank set through a pump material assembly, a plurality of soaking tanks in the soaking tank set are divided into a thin corn steep liquor tank and a thick corn steep liquor tank according to functional attributes of a technological process, a corn steep liquor evaporation assembly is communicated with a pipeline between the thin corn steep liquor tank and the thick corn steep liquor tank in the soaking tank set, thin corn steep liquor soaking liquid after soaking in the soaking tank set is firstly discharged into the thin corn steep liquor tank, then thin corn steep liquor is concentrated in the corn steep liquor evaporation assembly, and the corn steep liquor concentrated by the corn steep liquor evaporation assembly is pumped into the thick corn steep liquor tank of the soaking tank set for standby; the sulfur dioxide generator burns sulfur, produced sulfur dioxide is introduced into the spray absorption tower through the air pipe, spray components in the spray absorption tower spray water, the produced sulfur dioxide reacts with sulfur dioxide gas to generate sulfurous acid soaking solution, the sulfurous acid solution is drained to the sulfurous acid storage tank through the drainage pipe for standby application, the sulfurous acid solution in the sulfurous acid storage tank is added into the soaking tank to soak corn grains through the liquid adding pipe during use, the soaking system adopts countercurrent circulation soaking, the soaking solution is conveyed to the former tank while self-circulating in the soaking tank, then new soaking solution is pumped into the soaking tank with the longest soaking time, the new sulfurous acid solution is always kept in contact with corn with the longest soaking time (about to finish soaking), the corn grains newly fed into the tank are contacted with the soaking solution to be discharged, the flowing direction of the soaking solution is opposite to the feeding direction of the corn, the utilization rate of the soaking solution is improved to the maximum extent, the soaked corn grains enter the grinding extraction section, the soaked thin corn slurry enters the corn slurry evaporation component, and after the cooling tower cools high-temperature condensate generated by heating steam in the system, the cooling tank flows into the cooling tank to provide circulating cooling water for the corn slurry evaporation component.
Preferably, the top of each of the plurality of groups of soaking tanks is provided with a corn feeding port, a sulfurous acid inlet, a circulating liquid inlet, an emptying port and a manhole, the bottom of each of the plurality of groups of soaking tanks is provided with a corn discharging port and a circulating liquid outlet, a feeding pipe is connected in parallel between the corn feeding ports, and the feeding pipe is connected with the pumping assembly; a liquid adding pipe is connected in parallel between a plurality of sulfurous acid inlets, a plurality of soak solution circulating pipes are connected in parallel between a plurality of circulating solution inlets and a plurality of circulating solution outlets, a plurality of control valves for controlling the circulation of sulfurous acid in the soak solution circulating pipes are connected on the soak solution circulating pipes, a plurality of circulating pumps for driving the circulation of sulfurous acid soak solution are connected in parallel between the evacuation ports, the evacuation pipes are connected with the feeding pipe in parallel, a plurality of discharging pipes are connected between corn discharge ports, the discharging pipe of the thin corn steep liquor tank is connected with the feed inlet of the corn steep liquor evaporation assembly, and a concentrated material outlet of the corn steep liquor evaporation assembly is connected with a pipeline between the concentrated corn steep liquor tanks.
The technical effects produced by the method are as follows: the multi-stage utilization of sulfurous acid soaking liquid can be realized by the multiple soaking tanks, the utilization efficiency of sulfurous acid soaking liquid is improved, and the extraction efficiency of corn starch can be integrally improved by the arrangement of the multiple soaking tanks.
Preferably, the pump material assembly comprises a delivery pump and a connecting pipe, an inlet of the delivery pump is connected with the bottom of the cleaning tank through the connecting pipe, and an outlet of the delivery pump is connected with the feeding pipe.
The technical effects produced by the method are as follows: the cleaned corn kernels are pumped into the target soaking tank through the conveying pump, so that the corn kernel soaking device is convenient to use, and the connecting pipeline is connected with a plurality of control valves to realize on-off control of the target pipeline.
Preferably, a spray circulating pipe is connected to the outer side wall of the spray absorption tower, a power pump is connected to the spray circulating pipe, and a concentration detector is connected to the liquid collecting barrel.
The technical effect produced by the method is as follows: the concentration detector is used for detecting the generation concentration of the sulfurous acid solution, sulfur dioxide gas flows up from bottom to top, fully contacts with the spraying solution, generates chemical reaction to generate the sulfurous acid solution, flows into the liquid collecting barrel at the bottom of the tower, pumps the sulfurous acid solution in the liquid collecting barrel into the top of the spraying absorption tower again by the power pump when the sulfurous acid solution does not meet the concentration requirement after the sulfurous acid solution is detected by the concentration detector, circularly sprays and absorbs the sulfurous acid solution until the required sulfurous acid concentration is reached, then stores the sulfurous acid solution into the sulfurous acid storage tank, and pumps the sulfurous acid solution into the soaking tank group to provide the soaking solution when required.
Preferably, the top of the spray absorption tower is connected with a variable frequency induced draft fan.
The technical effects produced by the method are as follows: the variable frequency induced draft fan can enable the spray absorption tower to be in a negative pressure state, the air quantity is controllable in variable frequency, overflow of sulfur dioxide gas is reduced, absorption efficiency of sulfur dioxide is improved, and environmental pollution is reduced.
Preferably, the corn steep liquor evaporation assembly comprises a three-effect evaporator, a preheater, a vacuum pump, a control valve and a pipe group, an evaporation system of the three-effect evaporator is a vacuum evaporation countercurrent falling film feeding process, the three-effect evaporator comprises a first-effect evaporator, a second-effect evaporator and a three-effect evaporator which are connected in series, the first-effect evaporator, the second-effect evaporator and the three-effect evaporator are connected through the pipe group, the pipe group is connected with the control valve, the preheater is connected with the first-effect evaporator, the vacuum pump is provided with a plurality of groups which are respectively in one-to-one correspondence with the first-effect evaporator, the second-effect evaporator and the third-effect evaporator to provide steam pressure, and the flow direction of corn steep liquor in the soaking tank group is from the three-effect evaporator to the first-effect evaporator to the second-effect evaporator.
The technical effects produced by the method are as follows: the multi-effect evaporator can realize the full utilization of the heat energy of steam and effectively improve the heat energy effect.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a wet processing soaking system for corn starch according to the present utility model;
FIG. 2 is a front view of a wet corn starch processing soaking system according to the present utility model;
FIG. 3 is a side view of a wet corn starch processing soaking system according to the present utility model;
FIG. 4 is a top view of a wet corn starch processing soaking system according to the present utility model;
fig. 5 is a schematic diagram of a soaking tank of a wet processing soaking system for corn starch according to the present utility model.
1 a cleaning tank, 2 a cooling tower, 3 a soaking tank group, 301 a corn feeding port, 302 a sulfurous acid inlet, 303 a circulating liquid inlet, 304 an emptying port, 305 a manhole, 306 a corn discharging port, 307 a circulating liquid outlet, 4 a sulfurous acid storage tank, 5 a sulfur dioxide generator, 6 a spray absorption tower, 7 a variable frequency induced draft fan, 8 a corn steep liquor evaporation component, 801 a first-effect evaporator, 802 a second-effect evaporator, 803 a third-effect evaporator, 804 a preheater, 805 a vacuum pump, 806 a control valve, 807 a pipe group, 808 a condenser, 9 a liquid collecting barrel, 10 a pump component, 11 a liquid adding pipe, 12 a guide pipe, 13 a gas pipe, 14 a power pump and 15 a spray circulation pipe.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1 to 5 of the drawings, a wet processing soaking system for corn starch according to an embodiment of the present utility model includes:
the soaking tank set 3 comprises a plurality of groups of soaking tanks which are arranged in parallel; the soaking tanks in the soaking tank set 3 are connected by a pump, a valve and a pipeline, 0.3% sulfurous acid is used as a soaking solution in the soaking process, the temperature is maintained at (50+/-2) DEG C by steam heating, and corn kernels are soaked for 48-72 hours until the corn kernels become soft, and the embryo and soluble components can be completely extruded by hands to be dissociated, so that the subsequent corn kernel crushing and starch separation and extraction are facilitated;
the cleaning tank 1 is used for cleaning corn kernels again, provides preparation conditions for pumping, and is connected with a pumping assembly 10 between the cleaning tank 1 and the soaking tank set 3;
a liquid adding pipe 11 is connected between the sulfurous acid storage tank 4 and the soaking tank group 3, and the sulfurous acid solution in the sulfurous acid storage tank 4 is pumped into the soaking tank through the liquid adding pipe;
the spray absorption tower 6, the spray absorption tower 6 is internally fixed with a plurality of groups of spray components, so that no dead angle spray is realized, the reaction efficiency of spray solution and sulfur dioxide gas is improved, the bottom of the spray absorption tower 6 is connected with a liquid collecting barrel 9, and a guide tube 12 is connected between the liquid collecting barrel 9 and the sulfurous acid storage tank 4;
the sulfur dioxide generator 5, the sulfur dioxide generator 5 is connected with an air pipe 13, the air pipe 13 is fixedly connected with the bottom of the outer side wall of the spray absorption tower 6, and the air pipe introduces sulfur dioxide gas into the spray absorption tower;
the sulfur dioxide generator 5 burns sulfur to generate sulfur dioxide gas, and the sulfur dioxide gas is hermetically combusted in the whole process, runs under negative pressure, has no leakage and is clean in environment;
the corn steep liquor evaporation assembly 8 is communicated with the thin corn steep liquor tank and the thick corn steep liquor tank in the soaking tank set 3 through pipelines, the thin corn steep liquor after the soaking of the soaking tank set 3 is firstly discharged into the thin corn steep liquor tank, the thin corn steep liquor in the thin corn steep liquor tank is pumped into the corn steep liquor evaporation assembly 8 for concentration, and the corn steep liquor after the concentration of the corn steep liquor evaporation assembly 8 is pumped into the thick corn steep liquor tank of the soaking tank set 3 for standby; the whole communicating pipe is provided with a plurality of control valves to realize the on-off of a target pipeline;
In other embodiments, the top of the multiple groups of soaking tanks are provided with a corn feeding port 301, a sulfurous acid inlet 302, a circulating liquid inlet 303, an emptying port 304 and a manhole 305, the bottom of the multiple groups of soaking tanks is provided with a corn discharging port 306 and a circulating liquid outlet 307, feeding pipes are connected in parallel between the multiple corn feeding ports 301, and the feeding pipes are connected with the pump assembly 10 for conveying materials; a liquid adding pipe 11 is connected in parallel between the sulfurous acid inlets 302, and the liquid adding pipe 11 is connected to the bottom of the sulfurous acid storage tank 4; a soaking liquid circulation pipe is connected in parallel between the plurality of circulating liquid inlets 303 and the plurality of circulating liquid outlets 307, a plurality of control valves for controlling the circulation of sulfurous acid in the soaking tank are connected on the soaking liquid circulation pipe, a circulating pump for driving the circulation of sulfurous acid soaking liquid is connected on the soaking liquid circulation pipe, an emptying pipe is connected in parallel between the plurality of emptying holes 304 and connected with a feeding pipe, a discharging pipe is connected between the plurality of corn discharge holes 306, the discharging pipe of the thin corn steep liquor tank is connected with a feeding hole of the corn steep liquor evaporation assembly, and a concentrated material outlet of the corn steep liquor evaporation assembly 8 is connected with a pipeline between the concentrated corn steep liquor tanks.
The soaking system adopts countercurrent circulation soaking, the soaking liquid is conveyed into the previous tank while self-circulating in the tank, then new soaking liquid is pumped into the soaking tank with the longest soaking time, the new sulfurous acid solution is always kept in contact with corn with the longest soaking time (about to finish soaking), the corn newly fed into the tank is contacted with the soaking liquid to be discharged, the flowing direction of the soaking liquid in the reverse tank is opposite to the feeding direction of the corn, the utilization rate of the soaking liquid is improved to the greatest extent, the soaked corn particles enter the grinding and extracting section, and the soaked thin corn pulp enters the corn pulp evaporator.
In other embodiments, the pump assembly 10 includes a delivery pump and a connecting pipe, wherein an inlet of the delivery pump is connected with the bottom of the cleaning tank 1 through the connecting pipe, and an outlet of the delivery pump is connected with the feeding pipe.
In other specific embodiments, a spray circulation pipe 15 is connected to the outer side wall of the spray absorption tower 6, the bottom end of the spray circulation pipe 15 is connected to the liquid collection barrel 9, a power pump is connected to the spray circulation pipe 15, and a concentration detector is connected to the liquid collection barrel. And detecting the concentration of the sulfurous acid solution by a concentration detector, and when the concentration requirement is not met, circularly spraying the sulfurous acid solution in the liquid collecting barrel by a power pump to react with new sulfur dioxide gas until the sulfurous acid solution meets the concentration requirement.
The sulfur dioxide gas flows from bottom to top and fully contacts with the absorption solution to generate a sulfurous acid solution through chemical reaction, the sulfurous acid solution flowing into the bottom of the tower is pumped into the top of the spray absorption tower again by the circulating power pump, is circularly sprayed and absorbed until the required sulfurous acid concentration is reached, is stored in the sulfurous acid storage tank, and is pumped into the soaking tank group to provide a soaking solution when required.
In other specific embodiments, the top of the spray absorption tower 6 is fixedly connected with a variable frequency induced draft fan 7. The variable frequency induced draft fan 7 enables the spray absorption tower 6 to be in a negative pressure state, the air quantity is controllable in variable frequency, the absorption efficiency of sulfur dioxide is improved, and the environmental pollution is reduced.
In other embodiments, the corn steep liquor evaporation assembly 8 comprises a triple-effect evaporator, a preheater 804, a vacuum pump 805, a control valve 806 and a tube set 807, the evaporation system of the triple-effect evaporator is a vacuum evaporation countercurrent falling film feeding process, the triple-effect evaporator comprises a first-effect evaporator 801, a second-effect evaporator 802 and a triple-effect evaporator 803 which are connected in series, the first-effect evaporator 801, the second-effect evaporator 802 and the triple-effect evaporator 803 are connected through the tube set 807, the tube set 807 is connected with the control valve 806, the preheater 804 is connected with the first-effect evaporator 801, the vacuum pump 805 is provided with a plurality of groups and is respectively connected with the first-effect evaporator 801, the second-effect evaporator 802 and the triple-effect evaporator 803 in a one-to-one correspondence manner to provide vapor pressure, the flow direction of corn steep liquor in the soaking tank group is the triple-effect evaporator to the second-effect evaporator, and the multi-effect evaporator is used in a principle known in the prior art, which is not repeated herein.
The multi-effect evaporator adopts a vacuum evaporation countercurrent falling film technology, the flow direction of the corn steep liquor is from a three-effect evaporator to a one-effect evaporator to a two-effect evaporator, the generated steam is only added in the first effect, the secondary steam generated in the first effect is used as the second effect heating steam, and the secondary steam generated in the second effect is used as the third effect heating steam; the corn steep liquor is added from the top of each effect evaporator, forms membranous flow from top to bottom under the action of dead weight, and is evaporated by heat exchange with the heating steam on the outer wall of the evaporating pipe, and finally concentrated corn steep liquor with the solid content of about 40% is obtained.
For the device and the use method disclosed in the embodiments, since the device and the use method correspond to the method disclosed in the embodiments, the description is relatively simple, and the relevant places refer to the description of the method section.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
1. A corn starch wet process soaking system, comprising:
the soaking tank group comprises a plurality of groups of soaking tanks which are arranged in parallel;
the cleaning tank is connected with the soaking tank group, and a pumping component is connected between the cleaning tank and the soaking tank group;
a liquid adding pipe is connected between the sulfurous acid storage tank and the soaking tank group;
the spray absorption tower is internally fixed with a spray assembly, the bottom of the spray absorption tower is connected with a liquid collecting barrel, and a guide tube is connected between the liquid collecting barrel and the sulfurous acid storage tank;
the sulfur dioxide generator is connected with an air pipe, and the air pipe is fixedly connected with the bottom of the outer side wall of the spray absorption tower;
the corn steep liquor evaporation assembly is communicated with a thin corn steep liquor tank and a thick corn steep liquor tank in the soaking tank set through pipelines, the thin corn steep liquor soaking liquid after the soaking tank set is soaked is discharged into the thin corn steep liquor tank, the thin corn steep liquor in the thin corn steep liquor tank is pumped into the corn steep liquor evaporation assembly for concentration, and the corn steep liquor after the concentration of the corn steep liquor evaporation assembly is pumped into the thick corn steep liquor tank of the soaking tank set for standby;
a cooling tower in communication with a condenser tube in the corn steep liquor evaporation assembly; the liquid adding pipe and the guide pipe are connected with a power pump, and the pipeline between the corn steep liquor evaporation assembly and the soaking tank set and the pipeline between the cooling tower and the condenser are connected with the power pump.
2. The wet processing soaking system of corn starch according to claim 1, wherein the tops of the multiple groups of soaking tanks are respectively provided with a corn feeding port, a sulfurous acid inlet, a circulating liquid inlet, an emptying port and a manhole, the bottoms of the multiple groups of soaking tanks are respectively provided with a corn discharging port and a circulating liquid outlet, a feeding pipe is connected in parallel between the multiple corn feeding ports, and the feeding pipe is connected with the pumping component for conveying materials; a liquid adding pipe is connected in parallel between the sulfurous acid inlets, and the liquid adding pipe is connected to the bottom of the sulfurous acid storage tank; a plurality of circulation liquid inlets and a plurality of circulation liquid outlets are connected in parallel with a soaking liquid circulation pipe, a plurality of control valves for controlling the circulation of sulfurous acid in the soaking tank are connected on the soaking liquid circulation pipe, a circulation pump for driving the circulation of sulfurous acid soaking liquid is connected on the soaking liquid circulation pipe, a plurality of emptying pipes are connected in parallel between the emptying pipes and connected with the feeding pipe, a plurality of discharging pipes are connected between the corn discharge ports, the discharging pipes of the thin corn steep liquor tank are connected with the feeding port of the corn steep liquor evaporation assembly, and the concentrated material outlet of the corn steep liquor evaporation assembly is connected with a pipeline between the concentrated corn steep liquor tanks.
3. The wet corn starch processing soaking system according to claim 2, wherein the pump assembly comprises a delivery pump and a connecting pipe, an inlet of the delivery pump is connected with the bottom of the cleaning tank through the connecting pipe, and an outlet of the delivery pump is connected with the feeding pipe.
4. The corn starch wet processing soaking system according to claim 1, wherein a spray circulating pipe is connected to the outer side wall of the spray absorption tower, the bottom end of the spray circulating pipe is connected to the liquid collecting barrel, a power pump is connected to the spray circulating pipe, and a concentration detector is connected to the liquid collecting barrel.
5. The wet corn starch processing and soaking system according to claim 4, wherein a variable frequency induced draft fan is fixedly connected to the top of the spray absorption tower.
6. The wet corn starch processing and soaking system according to claim 1, wherein the corn steep liquor evaporation assembly comprises a three-effect evaporator, a preheater, a vacuum pump, a control valve and a tube group, the evaporation system of the three-effect evaporator is a vacuum evaporation countercurrent falling film feeding process, the three-effect evaporator comprises a first-effect evaporator, a second-effect evaporator and a three-effect evaporator which are connected in series, the first-effect evaporator, the second-effect evaporator and the three-effect evaporator are connected through the tube group, the tube group is connected with the control valve, the preheater is connected with the first-effect evaporator, the vacuum pump is provided with a plurality of groups which are respectively in one-to-one correspondence with the first-effect evaporator, the second-effect evaporator and the third-effect evaporator to provide steam pressure, and the flow direction of corn steep liquor in the soaking tank group is from the first-effect evaporator to the second-effect evaporator.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202320079983.7U CN219136671U (en) | 2023-01-10 | 2023-01-10 | Corn starch wet processing soaking system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202320079983.7U CN219136671U (en) | 2023-01-10 | 2023-01-10 | Corn starch wet processing soaking system |
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| CN219136671U true CN219136671U (en) | 2023-06-06 |
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