CN213987259U - Starch finished product moisture constant control system based on DCS control system - Google Patents
Starch finished product moisture constant control system based on DCS control system Download PDFInfo
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- CN213987259U CN213987259U CN202120010077.2U CN202120010077U CN213987259U CN 213987259 U CN213987259 U CN 213987259U CN 202120010077 U CN202120010077 U CN 202120010077U CN 213987259 U CN213987259 U CN 213987259U
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- 229920002472 Starch Polymers 0.000 title claims abstract description 43
- 235000019698 starch Nutrition 0.000 title claims abstract description 43
- 239000008107 starch Substances 0.000 title claims abstract description 43
- 239000000463 material Substances 0.000 claims abstract description 27
- 238000001514 detection method Methods 0.000 claims description 70
- 238000007599 discharging Methods 0.000 claims description 24
- 239000000428 dust Substances 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims 2
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 229920002261 Corn starch Polymers 0.000 abstract description 3
- 239000008120 corn starch Substances 0.000 abstract description 3
- 238000001035 drying Methods 0.000 description 9
- 238000012856 packing Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 6
- 238000012858 packaging process Methods 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 238000004513 sizing Methods 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000001404 mediated effect Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- JTJMJGYZQZDUJJ-UHFFFAOYSA-N phencyclidine Chemical class C1CCCCN1C1(C=2C=CC=CC=2)CCCCC1 JTJMJGYZQZDUJJ-UHFFFAOYSA-N 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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Abstract
The utility model belongs to the technical field of corn starch deep-processing, especially, relate to a starch finished product moisture constant control system based on DCS control system, including DCS control system and the mixing box, air current setting gauge, air flow dryer, the whirlwind air-assisted system that connect gradually, the mixing box the air current setting gauge the air flow dryer the whirlwind air-assisted system open and close respectively by DCS control system control. The utility model has the advantages that: the automatic control of all equipment and the real-time display of data such as temperature and moisture can be realized, and the feeding speed during production can be stabilized, so that the discharged material moisture is stable, the product quality is high, and the yield is high.
Description
Technical Field
The utility model belongs to the technical field of corn starch deep-processing, especially, relate to a starch finished product moisture constant control system based on DCS control system.
Background
The starch has wide application, can be used in industries such as sizing of paper, pressing of pharmaceutical tablets, sizing of textiles and the like besides eating, the moisture content of the starch of finished products produced from corn starch is an important index for measuring the quality of the starch, and is related to the starch purity and the storage time of commercial starch, the commercial starch moisture specified in the national quality standard is the safe moisture for storing the starch according to the climate conditions of China, the starch moisture is too high, the mildew occurrence of the safe storage time or the storage period can be reduced, the starch moisture is too low, the economic income which is required by starch production factories can be reduced, and therefore, the starch finished product moisture is ensured to be stabilized within the safe moisture index (14%) in the national quality standard, and is a very concern of each starch production factory.
In the starch production in China at present, the starch drying process is mainly characterized in that the rotating speed of a feeding auger is controlled manually so as to control the moisture after the starch is dried, the starch drying process is controlled manually by feeling in the process, the accurate and stable production cannot be realized, and the drying process directly influences the yield of starch products and the important process of starch quality.
SUMMERY OF THE UTILITY MODEL
In order to overcome the not enough of above-mentioned prior art, the utility model provides a starch finished product moisture constant control system based on DCS control system not only can realize the automatic control of all equipment, the real-time demonstration of data such as temperature, moisture, feed rate when can stabilizing production moreover to make ejection of compact moisture stable, product quality is high, and the yield is big.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a starch finished product moisture constant control system based on a DCS control system is characterized by comprising the DCS control system, and a mixing box, an airflow kickoff device, an airflow dryer and a cyclone air conveying system which are sequentially connected, wherein the mixing box, the airflow kickoff device, the airflow dryer and the cyclone air conveying system are respectively controlled by the DCS control system to be opened and closed.
Preferably, the mixing box is still connected with the feed auger, carry the starch material by the feed auger extremely the mixing box, the drive of feed auger by DCS control system control.
A stirrer is arranged in the mixing box, and is preferably positioned in the center of the mixing box.
Preferably, air flow dryer is connected with steam inlet pipe, steam inlet pipe exit is equipped with air inlet valve, admission pressure sensor, inlet air temperature sensor in proper order, air flow dryer's material import is equipped with feeding temperature sensor, air flow dryer's material export through first wind send the pipeline with whirlwind wind send the headtotail near air flow dryer's material export be equipped with ejection of compact temperature sensor on the first wind send the pipeline.
Preferably, cyclone pneumatic conveying system includes cyclone, air current fan, air current whirlwind auger, air seal machinery, moisture detection device, cyclone enter the dirt mouth with first wind send the pipe connection, the gas outlet of cyclone top with air current fan connects, the dust exhaust mouth of cyclone lower extreme with air current whirlwind auger connects, the wind of air current whirlwind auger export send the pipe connection with the second wind be equipped with on the wind of the export of air current whirlwind auger send the pipeline air seal machinery with be located the air seal machinery below moisture detection device.
Preferably, moisture detection device is including being located the feeding moisture detection auger of air seal machinery below, with the ejection of compact moisture detection auger that the second wind sent the pipe connection, feeding moisture detect the auger with the wind of air current whirlwind auger export sends the pipe connection, the export of feeding moisture detection auger with be equipped with moisture detector on the pipeline between the entry of ejection of compact moisture detection auger.
Preferably, before the material mixing box feeds the material, the DCS control system controls the air flow fan, the feeding moisture detection auger, the discharging moisture detection auger, the air flow cyclone air seal machine, the air flow cyclone auger, the air flow kickoff device, the feeding auger and the stirrer to be started in sequence, and the motor frequency of the feeding auger is simultaneously linked with the moisture detector; the DCS control system also controls the opening of an air inlet valve, and the air inlet valve is interlocked with a feeding temperature sensor of the airflow dryer; the shutdown sequence is the reverse of the startup sequence.
Preferably, the DCS control system controls opening of the airflow fan, the driving motor of the airflow fan is interlocked with the feeding moisture detection auger and the driving of the discharging moisture detection auger, the feeding moisture detection auger and the driving of the discharging moisture detection auger are interlocked with the driving of the air shutter, the driving of the air shutter is interlocked with the driving of the airflow cyclone auger, the driving of the airflow cyclone auger is interlocked with the driving of the airflow kickoff device, the driving of the airflow kickoff device is interlocked with the driving of the feeding auger, the driving of the feeding auger is interlocked with the driving of the stirrer, and the motor frequency of the feeding auger is interlocked with the moisture detector.
As another implementation mode of the utility model, the cyclone separator comprises a first set of cyclone separator and a second set of cyclone separator which are arranged side by side, the dust inlet of the first set of cyclone separator and the dust inlet of the second set of cyclone separator are respectively connected with the first air conveying pipeline, the gas outlet is respectively connected with the air flow fan, the dust outlet at the lower end of the first set of cyclone separator is connected with the first-level air flow cyclone auger, the dust outlet at the lower end of the second set of cyclone separator is connected with the second-level air flow cyclone auger, the air conveying pipeline at the outlet of the first-level air flow cyclone auger and the air conveying pipeline at the outlet of the second-level air flow cyclone auger are respectively connected with the second air conveying pipeline, a first-level air flow cyclone air seal machine is arranged on the air conveying pipeline at the outlet of the first-level air flow cyclone auger, a second-level air flow cyclone air seal machine is arranged on the air conveying pipeline at the outlet of the second-level air flow cyclone air flow auger, the second grade air current whirlwind airlock is equipped with below the feeding moisture detects the auger, with the second wind send the pipe connection ejection of compact moisture to detect the auger, the feeding moisture detect the auger with the wind of second grade air current whirlwind auger export send the pipe connection, the export of feeding moisture detect the auger with be equipped with on between the pipeline of the entry of ejection of compact moisture detection auger moisture detector.
Preferably, before feeding the mixing box, the DCS control system sequentially controls the turn-on sequence of each drive to be: the system comprises an airflow fan, a feeding moisture detection auger, a discharging moisture detection auger, a primary airflow cyclone air seal machine, a secondary airflow cyclone air seal machine, a primary airflow cyclone auger, a secondary airflow cyclone auger, an airflow kickoff device, a feeding auger and a stirrer, wherein the motor frequency of the feeding auger is linked with a moisture detector; the DCS control system also controls the opening of the air inlet valve, and the air inlet valve is interlocked with a feeding temperature sensor of the airflow dryer; the shutdown sequence is the reverse of the startup sequence.
Further preferably, the DCS control system controls the driving motor of the airflow fan to be started, the driving motor of the airflow fan is linked with the driving of the feeding moisture detection auger and the discharging moisture detection auger, the drive of the feeding moisture detection auger and the discharge moisture detection auger are linked with the drive of the primary airflow cyclone air seal machine and the secondary airflow cyclone air seal machine, the drive of the primary airflow cyclone air seal machine and the drive of the secondary airflow cyclone air seal machine are linked with the drive of the primary airflow cyclone packing auger and the drive of the secondary airflow cyclone packing auger, the drive of the first-stage airflow cyclone packing auger and the drive of the second-stage airflow cyclone packing auger are linked with the drive of the airflow kickoff unit, the drive of the air flow kickoff is linked with the drive of the feeding auger, the drive of the feeding auger is linked with the drive of the stirrer, and the frequency of the motor of the feeding auger is linked with the moisture detector.
The utility model has the advantages that: after the material was transported to the compounding case by hydroextractor ejection of compact auger, carry to the air current setting gauge by the feed auger in, carry the air current desicator by the air current setting gauge again in, later carry the packaging process by the pneumatic conveying system, whole process passes through DCS control, not only can realize the automatic control of corresponding equipment, can also adjust air inlet temperature through DCS's PID, feed rate, play moisture etc, real time monitoring data, the running state, thereby make ejection of compact moisture stable, product quality is high, the yield is big. Meanwhile, when the equipment has a fault, the equipment can be emergently mediated, and the phenomenon that the accumulation of materials influences the operation of other equipment is avoided. The utility model discloses can maximize reduce people's participation, both practice thrift the cost, can effectively prevent the emergence of incident again, make finished product starch moisture control about 13.5%.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: 1 feeding auger, 2 airflow kickoff, 3 airflow fan, 4 first-level airflow cyclone auger, 5 second-level airflow cyclone auger, 6 first-level airflow cyclone airlock, 7 second-level airflow cyclone airlock, 8 feeding moisture detection auger, 9 discharging moisture detection auger, 10 weighing sensor, 11 discharging temperature sensor, 12 feeding temperature sensor, 13 air inlet valve, 14 air inlet pressure sensor, 15 air inlet temperature sensor, 16 mixing box, 17 airflow dryer, 18 stirrer, 19 moisture detector, 20 first air supply pipeline, 21 second air supply pipeline, 22 first group of cyclone separators, 23 second group of cyclone separators, 24 first-level airflow cyclone auger outlet air supply pipeline, and 25 second-level airflow cyclone auger outlet air supply pipeline.
Detailed Description
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the two components can be directly connected or indirectly connected through an intermediate medium, and the two components can be communicated with each other. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in figure 1, the utility model provides a starch finished product moisture constant control system based on DCS control system, including DCS control system and the feed auger 1 that connects gradually, mixing box 16, air current setting gauge 2, air current dryer 17, whirlwind air-assisted system, feed auger 1, mixing box 16, air current setting gauge 2, air current dryer 17, the opening and close of whirlwind air-assisted system are controlled by DCS control system respectively, include the control to driving motor, valve and corresponding sensor.
The mixer 16 is internally provided with a stirrer 18 which can be a spiral stirrer, the material conveyed by the feeding auger 1 is fed into the mixer 16, the feeding auger 1 is positioned above or at the side part outside the mixer 16, the stirrer 18 is positioned at the center of the mixer 16, and the stirrer 18 and the feeding auger 1 are driven by corresponding motors. A load cell 10 is mounted at the bottom of the mixing box 16 for weighing the feed material.
The utility model discloses an air flow dryer 17 is connected with the steam admission line, send into air flow dryer 17 with the heat source by the steam admission line in, it sets gradually air inlet valve 13 to be close to steam outlet department at the steam admission line, admission pressure sensor 14, admission temperature sensor 15, material import at air flow dryer 17 sets up feeding temperature sensor 12, air flow dryer 17's material export is through first wind send pipeline 20 and whirlwind wind to send the headtotail, near air flow dryer 17's material export, install ejection of compact temperature sensor 11 on first wind send pipeline 20. The feeding temperature sensor 12 and the discharging temperature sensor 11 respectively detect the temperature of the starch before and after the starch enters the airflow dryer 17, so that the starch passing through the cyclone air conveying system meets the requirement on moisture before being sent into a tooling process.
The utility model discloses a whirlwind pneumatic conveying system includes cyclone, air current fan 3, air current whirlwind auger, the air seal machinery, moisture detection device, cyclone's dust inlet is connected with first wind pipeline 20 that send, the gas outlet and the air current fan 3 of cyclone top are connected, the dust exhaust mouth and the air current whirlwind auger of cyclone lower extreme are connected, the wind pipeline that sends of air current whirlwind auger export is connected with second wind pipeline 21 that sends, set up the air seal machinery and be located the moisture detection device of air seal machinery below on the wind pipeline that sends of the export of air current whirlwind auger. Wherein the moisture detection device comprises a feeding moisture detection auger 8 positioned below the air seal machine and a discharging moisture detection auger 9 connected with a second air conveying pipeline 21, the feeding moisture detection auger 8 is connected with the air conveying pipeline at the outlet of the airflow cyclone auger, and a moisture detector 19 is arranged on the pipeline between the outlet of the feeding moisture detection auger 8 and the inlet of the discharging moisture detection auger 9. The DCS control system firstly starts the airflow fan 3, then the airflow fan 3 sequentially controls the start of the feeding moisture detection auger 8, the discharging moisture detection auger 9, the airflow cyclone air seal machine, the airflow cyclone auger, the lifter motor of the airflow kickoff device 2, the feeding auger 1 and the stirrer 18 in a linkage manner, meanwhile, the motor frequency of the feeding auger 1 is also linked with the moisture detector 19, when the moisture content detected by the moisture detector 19 is high, the motor frequency of the feeding auger 1 can be reduced, the feeding amount is reduced, the drying effect is increased, the moisture content is reduced, and therefore the moisture content of the starch meets the requirements; after the airflow fan 3 is started, the DCS control system also controls the opening of an air inlet valve 13, and the air inlet valve 13 is interlocked with a feeding temperature sensor 12 of an airflow dryer 17; the lower the temperature displayed by the feeding temperature sensor 12 is, the larger the opening of the air inlet valve 13 is, the lower the starch moisture content is, the higher the frequency of the feeding auger motor is, and thus the moisture content of the dried finished product starch can be well controlled; the shutdown sequence is the reverse of the startup sequence.
The specific control process of the DCS control system is further described below. DCS control system is right through following structure the utility model discloses a moisture constant control system controls.
Firstly, a DCS control system controls the opening of an airflow fan 3, a driving motor of the airflow fan 3 interlocks the driving of a feeding moisture detection auger 8 and a discharging moisture detection auger 9, the driving of a driving interlocking air shutter of the feeding moisture detection auger 8 and the discharging moisture detection auger 9, the driving of a driving interlocking airflow cyclone auger of the air shutter, the driving interlocking airflow kickoff 2 of the airflow cyclone auger, the driving interlocking feeding auger 1 of the airflow kickoff 2, the driving interlocking stirrer 18 of the feeding auger 1, and the motor frequency interlocking moisture detector 19 of the feeding auger 1. After the airflow fan 3 is started, the DCS control system controls the air inlet valve 13 to be opened, and the air inlet valve 13 is interlocked with the feeding temperature sensor 12 of the airflow dryer 17.
The interlocking means that the motors are started in a certain order. The DCS control system is used for realizing the starting and stopping of the devices according to a certain sequence, so that the moisture of the finished starch product is constantly controlled to be about 13.5%, the benefits of manufacturers can be guaranteed, and the product quality can be guaranteed. In addition, the messenger that still needs the explanation, the utility model discloses a DCS control system is prior art at present, thereby realizes the invariable control to moisture through DCS to each sensor, driving motor's control, and it does not relate to the improvement of software.
The utility model discloses a cyclone quantity can set up according to the condition to two sets of cyclones are the example right the utility model discloses further explain. As shown in figure 1, the cyclone separator comprises a first group of cyclone separators 22 and a second group of cyclone separators 23 which are arranged in parallel, dust inlets of the first group of cyclone separators 22 and the second group of cyclone separators 23 are respectively connected with a first air supply pipeline 20, air outlets of the first group of cyclone separators 22 and the second group of cyclone separators 23 are respectively connected with an airflow fan 3, a dust outlet at the lower end of the first group of cyclone separators 22 is connected with a first-stage airflow cyclone packing auger 4, a dust outlet at the lower end of the second group of cyclone separators 23 is connected with a second-stage airflow cyclone packing auger 5, an air supply pipeline 24 at an outlet of the first-stage airflow cyclone packing auger and an air supply pipeline 25 at an outlet of the second-stage airflow cyclone packing auger are respectively connected with a second air supply pipeline 21, a first-stage airflow cyclone air seal 6 is arranged on the air supply pipeline 24 at the outlet of the first-stage airflow cyclone packing auger, a second-stage airflow air seal 7 is arranged on the air supply pipeline, And the discharged water detection auger 9 is connected with the second air supply pipeline 21, the fed water detection auger 8 is connected with the air supply pipeline 25 at the outlet of the second-stage airflow cyclone auger, and a water detector 19 is arranged on a pipeline between the outlet of the fed water detection auger 8 and the inlet of the discharged water detection auger 9.
The drying process of the starch in this example was: starch material enters a mixing box 16 from a feeding auger 1, enters an airflow dryer 17 from the mixing box 16 through an airflow kickoff device 2, the temperature of starch entering and exiting the airflow dryer 17 is detected through a feeding temperature sensor 12 and a discharging temperature sensor 11, an air inlet valve 13 is used for controlling the steam flow of the airflow dryer 17, and the starch dried by the airflow dryer 17 enters a first group of cyclone separators 22 and a second group of cyclone separators 23 of a cyclone air conveying system through a first air conveying pipeline 20. Then, starch enters a first-stage airflow cyclone auger 4 and a second-stage airflow cyclone auger 5 from the lower ends of a first group of cyclone separators 22 and a second group of cyclone separators 23 respectively, materials coming out of the second-stage airflow cyclone auger 5 pass through a second-stage airflow cyclone air seal machine 7, a part of materials are extracted to enter a feeding moisture detection auger 8, moisture content in the starch is detected through a moisture detector 19, then the materials enter a second air conveying pipeline 21 through a discharging moisture detection auger 9, after the moisture is detected to be qualified, the materials are conveyed to a packaging process through the second air conveying pipeline 21 in an air blowing mode, if the moisture content is detected to be too high, the motor frequency of the feeding auger 1 is adjusted, the input amount of the materials is reduced, or the size of an air inlet valve 13 is adjusted, steam is increased, the drying effect is improved until the moisture content reaches the standard, and the subsequent drying of the materials is completed by taking the moisture content as a drying parameter. Because the second-stage airflow cyclone auger 5 and the first-stage airflow cyclone auger 4 are in parallel connection, the moisture content of one line only needs to be detected, and after the starch moisture detected by the first-stage airflow cyclone auger 5 is qualified, the material of the first-stage airflow cyclone auger 4 is directly conveyed to the packaging process through the second air conveying pipeline 21.
The principle of the DCS for controlling the moisture in the drying process is as follows: before feeding, firstly, starting an airflow fan 3 by a DCS control system, and then, sequentially controlling the opening of a feeding moisture detection auger 8, a discharging moisture detection auger 9, a primary airflow cyclone air seal machine 6, a secondary airflow cyclone air seal machine 7, a primary airflow cyclone auger 4, a secondary airflow cyclone auger 5, a lifter motor of an airflow kickoff device 2, a feeding auger 1 and a stirrer 18 by interlocking the airflow fan 3, wherein the motor frequency of the feeding auger 1 is also interlocked with a moisture detector 19; the DCS control system controls the opening of the air inlet valve 13, and the air inlet valve 13 is interlocked with a feeding temperature sensor of the airflow dryer 17; the shutdown sequence is the reverse of the startup sequence.
For ease of understanding, the following description will be made of a specific control process of the DCS control system: before feeding, a DCS control system firstly controls a driving motor of an airflow fan 3 to be started, the driving motor of the airflow fan 3 is linked with the driving of a feeding moisture detection auger 8 and a discharging moisture detection auger 9, the driving of the feeding moisture detection auger 8 and the discharging moisture detection auger 9 is linked with the driving of a primary airflow cyclone air seal machine 6 and a secondary airflow cyclone air seal machine 7, the driving of the primary airflow cyclone air seal machine 6 and the secondary airflow cyclone air seal machine 7 is linked with the driving of a primary airflow cyclone auger 4 and a secondary airflow cyclone air seal machine 5, the driving of the primary airflow cyclone auger 4 and the secondary airflow cyclone air seal machine 5 is linked with the driving of an airflow kickoff device 2, the driving of the airflow kickoff device 2 is linked with the driving of a linked feeding auger 1, the driving of a linked stirrer 18 of the feeding auger 1, and the motor frequency of the feeding auger 1 is also linked with a moisture detector 19. After the airflow fan 3 is started, the DCS control system also controls the air inlet valve 13 to be opened, and the air inlet valve 13 is interlocked with the feeding temperature sensor 12 of the airflow dryer 17.
When the machine is stopped, the DCS control system can automatically and sequentially stop the stirrer 18, the feeding auger 1 and the lifter motor of the airflow kickoff device 2, the airflow cyclone augers (4 and 5), the airflow cyclone air seal machine (6 and 7), the moisture detection augers (8 and 9) and the airflow fan 3.
The above detailed description is provided for the examples of the present invention, but the present invention is only the preferred embodiments of the present invention, and should not be considered as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the patent coverage of the present invention.
Claims (10)
1. A starch finished product moisture constant control system based on a DCS control system is characterized by comprising the DCS control system, and a mixing box, an airflow kickoff device, an airflow dryer and a cyclone air conveying system which are sequentially connected, wherein the mixing box, the airflow kickoff device, the airflow dryer and the cyclone air conveying system are respectively controlled by the DCS control system.
2. The control system of claim 1, wherein the mixing box is further connected with a feeding auger, the feeding auger conveys the starch material to the mixing box, and the driving of the feeding auger is controlled by the DCS control system.
3. The control system according to claim 2, wherein the air flow dryer is connected to a steam inlet pipe, the steam inlet pipe is sequentially provided with an inlet valve, an inlet pressure sensor and an inlet temperature sensor, a material inlet of the air flow dryer is provided with a feeding temperature sensor, a material outlet of the air flow dryer is connected to the cyclone air supply system through a first air supply pipe, and a discharging temperature sensor is arranged near the material outlet of the air flow dryer and on the first air supply pipe.
4. The control system of claim 3, wherein the cyclone pneumatic conveying system comprises a cyclone separator, an airflow fan, an airflow cyclone auger, an air seal machine and a moisture detection device, a dust inlet of the cyclone separator is connected with the first pneumatic conveying pipeline, an air outlet of the cyclone separator is connected with the airflow fan, a dust exhaust port of the cyclone separator is connected with the airflow cyclone auger, a pneumatic conveying pipeline at an outlet of the airflow cyclone auger is connected with the second pneumatic conveying pipeline, and the air seal machine and the moisture detection device positioned below the air seal machine are arranged on the pneumatic conveying pipeline at the outlet of the airflow cyclone auger.
5. The control system of claim 4, wherein the moisture detection device comprises a feed moisture detection auger located below the air seal machinery and an outlet moisture detection auger connected with the second air supply pipeline, the feed moisture detection auger is connected with the air supply pipeline at the outlet of the airflow cyclone auger, and a moisture detector is arranged on a pipeline between the outlet of the feed moisture detection auger and the inlet of the outlet moisture detection auger.
6. The control system of claim 5, wherein before the material is fed into the mixing box, the DCS control system controls the air flow fan, the feed water detection auger, the discharge water detection auger, the air flow cyclone air seal machine, the air flow cyclone auger, the air flow kickoff device, the feed auger and the stirrer to be started in sequence, and the motor frequency of the feed auger is simultaneously linked with the water content detector; the DCS control system also controls the opening of the air inlet valve, and the air inlet valve is interlocked with a feeding temperature sensor of the airflow dryer; the shutdown sequence is the reverse of the startup sequence.
7. The control system of claim 6, wherein the DCS control system controls the opening of the airflow fan, the driving motor of the airflow fan interlocks the feeding moisture detection auger and the driving of the discharging moisture detection auger, the feeding moisture detection auger and the driving of the discharging moisture detection auger interlock the driving of the air seal machine, the driving of the air seal machine interlocks the driving of the airflow cyclone auger, the driving of the airflow cyclone auger interlocks the driving of the airflow kickoff device, the driving of the airflow kickoff device interlocks the driving of the feeding auger, the driving of the feeding auger interlocks the driving of the stirrer, and the motor frequency of the feeding auger interlocks the moisture detector.
8. The control system according to claim 5, wherein the cyclone separator comprises a first set of cyclone separator and a second set of cyclone separator arranged in parallel, the dust inlet of the first set of cyclone separator and the dust inlet of the second set of cyclone separator are respectively connected with the first air supply pipeline, the air outlet of the first set of cyclone separator and the air outlet of the second set of cyclone separator are respectively connected with the airflow fan, the dust outlet at the lower end of the first set of cyclone separator is connected with the first-stage airflow cyclone auger, the dust outlet at the lower end of the second set of cyclone separator is connected with the second-stage airflow cyclone auger, the air supply pipeline at the outlet of the first-stage airflow cyclone auger and the air supply pipeline at the outlet of the second-stage airflow cyclone auger are respectively connected with the second air supply pipeline, the air supply pipeline at the outlet of the first-stage airflow cyclone auger is provided with a first-stage airflow cyclone air seal, and the air supply pipeline at the outlet of the second-stage airflow cyclone auger is provided with a second-stage airflow cyclone air seal, the second grade air current whirlwind airlock is equipped with below the feeding moisture detects the auger, with the second wind send the pipe connection ejection of compact moisture to detect the auger, the feeding moisture detect the auger with the wind of second grade air current whirlwind auger export send the pipe connection, the export of feeding moisture detect the auger with be equipped with on between the pipeline of the entry of ejection of compact moisture detection auger moisture detector.
9. The control system of claim 8, wherein before the feeding of the mixing box, the DCS control system sequentially controls the turn-on sequence of the drives to: the system comprises an airflow fan, a feeding moisture detection auger, a discharging moisture detection auger, a primary airflow cyclone air seal machine, a secondary airflow cyclone air seal machine, a primary airflow cyclone auger, a secondary airflow cyclone auger, an airflow kickoff device, a feeding auger and a stirrer, wherein the motor frequency of the feeding auger is linked with a moisture detector; the DCS control system also controls the opening of the air inlet valve, and the air inlet valve is interlocked with a feeding temperature sensor of the airflow dryer; the shutdown sequence is the reverse of the startup sequence.
10. The control system of claim 9, wherein the DCS control system controls the driving motor of the airflow fan to be turned on, the driving motor of the airflow fan interlocks with the driving of the feeding moisture detection auger and the driving of the discharging moisture detection auger, the driving of the feeding moisture detection auger and the driving of the discharging moisture detection auger interlocks with the driving of the primary airflow cyclone air seal device and the driving of the secondary airflow cyclone air seal device, the driving of the primary airflow cyclone air seal device and the driving of the secondary airflow cyclone air seal device interlock with the driving of the primary airflow cyclone air seal device and the driving of the secondary airflow cyclone air seal device respectively, the driving of the primary airflow cyclone air seal device and the driving of the secondary airflow cyclone air seal device interlock with the driving of the airflow kickoff device, the driving of the airflow kickoff device interlocks with the driving of the feeding auger, the driving of the stirring device interlocks with the driving of the stirring device, the feeding auger motor is frequency-linked with the moisture detector.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120010077.2U CN213987259U (en) | 2021-01-05 | 2021-01-05 | Starch finished product moisture constant control system based on DCS control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120010077.2U CN213987259U (en) | 2021-01-05 | 2021-01-05 | Starch finished product moisture constant control system based on DCS control system |
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