CN103744364A - Automatic control system and control method for double-spiral pulp extruder - Google Patents
Automatic control system and control method for double-spiral pulp extruder Download PDFInfo
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- CN103744364A CN103744364A CN201310681481.2A CN201310681481A CN103744364A CN 103744364 A CN103744364 A CN 103744364A CN 201310681481 A CN201310681481 A CN 201310681481A CN 103744364 A CN103744364 A CN 103744364A
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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]
Abstract
An automatic control system for a double-spiral pulp extruder comprises a frequency converter for controlling the double-spiral pulp extruder to start a motor and a PLC control device for controlling the frequency converter, and a touch-type control panel for operating personnel to set control parameters and monitor the running state of a device, wherein the frequency converter is in communication connection with the PLC control device by utilizing a field bus network; and the PLC control device is in communication connection with the touch-type control panel by utilizing an industrial Ethernet. The method is capable of solving the problems of low production efficiency in the extraction production process of tobacco leaves reproduction utilizing a paper-making method, easy material overflowing and machine stuffing and blocking or non-uniform discharging of solid materials and overlarge moisture content.
Description
Technical field
The invention belongs to papermaking-method reconstituted tobaccos production control technical field.
Background technology
Domestic papermaking-method reconstituted tobaccos technology is started late, and realizes industrialization and only has the time of nearly ten years, and because its improvement to the consumption reduction of cigarette industry and cigarette quality has broad application prospects, development rapidly.Double screw pulp extruder is disposed at the extraction process section that papermaking-method reconstituted tobaccos is produced, and is the key equipment of extraction process section.The target of extraction process section be by raw materials such as tobacco leaf fragment or offals after solvent soaking, extract wherein is separated as much as possible with solid content, here mainly by Double screw pulp extruder, complete exactly, so the technic index of this process section depends primarily on the control effect of Double screw pulp extruder.The control of Double screw pulp extruder is at present to change according to the running current of Double screw pulp extruder, by controlling the charging rate of supplied materials direction, controls.In fact, because the control of Double screw pulp extruder inlet amount has hysteresis quality, and inlet amount is to change and inhomogeneous, so often there will be following situation: otherwise charging too much causes unrestrainedly expecting and vexed car; The very few solid content pressure that causes of charging is dry, and water percentage is excessive, and discharging is inhomogeneous.
Summary of the invention
Object of the present invention provides a kind of automatic control system and control method of Double screw pulp extruder just in order to solve the deficiency of prior art existence, to solve papermaking-method reconstituted tobaccos, to extract in production run production efficiency lower, easily unrestrained material and stop up vexed car or solid content discharging is inhomogeneous, water percentage is excessive problem.
The object of the invention is to realize by following control technology scheme.
A kind of automatic control system of Double screw pulp extruder, this system includes and is installed in electrical control cubicles for controlling the frequency converter of Double screw pulp extruder starter motor and for controlling the PLC control device of frequency converter, be installed on electrical control cubicles door-plate or on execute-in-place platform the touch control flow for operating personnel's setup control parameter and watch-dog running status, between frequency converter and PLC control device, adopt fieldbus network to carry out communication and be connected, between PLC control device and touch control flow, adopt Industrial Ethernet to carry out communication and be connected; The control parameter arranging on the interface of touch control flow includes running current setting value I
dinput, real-time current I show, upper limit running frequency F
hset input, lower limit running frequency F
lset input, real time execution frequency F demonstration, pid control circuit adjusting parameter P, the setting value input of I, D, the input of forward running frequency setting value, forward operation start button, the input of inverted running frequency setting value, inverted running start button, automatic/hand selection knob.
A control method for the automatic control system of Double screw pulp extruder, when automatically control, by the frequency converter running current I of Real-time Collection and running current setting value I
dcompare, work as I>I
dtime, automatically improve the output frequency F of frequency converter, thereby accelerate the discharging speed of Double screw pulp extruder, but output frequency F can not surpass the upper limit running frequency F setting
h; Work as I<I
dtime, automatically reduce the output frequency F of frequency converter, thus the discharging speed of the Double screw pulp extruder that slows down, but output frequency F can not be lower than the lower limit running frequency F setting
l; While manually controlling, press forward operation start button, Double screw pulp extruder is by the forward running frequency setting value operation of operating personnel's input; Press inverted running start button, Double screw pulp extruder is by the inverted running frequency setting value operation of operating personnel's input.
The present invention at least has the following advantages:
1) effectively reduce the unevenness of Double screw pulp extruder solid content discharging, improved the solid content mass dryness fraction (being brought up to more than 30% by 25% left and right) of output;
2) effectively reduce the probability that Double screw pulp extruder unrestrained material occurs and stops up vexed car, improved production efficiency;
3) if occurred once in a while, stop up vexed car accident, control mode can be switched to " manually " by " automatically ", by operating personnel, manually rotate and reverse alternately controlling run, can remove quickly obturator, after getting through chokepoint, then control mode is gone back to " automatically ", return to normal production.
The present invention has optimized the control program that existing papermaking-method reconstituted tobaccos extracts key equipment Double screw pulp extruder in production run effectively, the automatic control system of optimization and control method are applied to papermaking-method reconstituted tobaccos extraction production run, have solved and extracted the practical problems existing in production run.Double screw pulp extruder is configured to this control system to process and method is carried out automatic production control, can be preferably that the solid row thing of supplied materials is separated with extract clean, stabilize and increase the mass dryness fraction of solid content in product; Can also effectively prevent the vexed car of putty.
Below in conjunction with Figure of description, further set forth content of the present invention.
Accompanying drawing explanation
Fig. 1 is control system steering logic block diagram of the present invention.
Embodiment
The automatic control system of a kind of Double screw pulp extruder of the present invention includes and is installed in electrical control cubicles for controlling the frequency converter of Double screw pulp extruder starter motor and for controlling the PLC control device of frequency converter, be installed on electrical control cubicles door-plate or on execute-in-place platform the touch control flow for operating personnel's setup control parameter and watch-dog running status, between frequency converter and PLC control device, adopt fieldbus network to carry out communication and be connected, between PLC control device and touch control flow, adopt Industrial Ethernet to carry out communication and be connected; The control parameter arranging on the interface of touch control flow includes running current setting value I
dinput, real-time current I show, upper limit running frequency F
hset input, lower limit running frequency F
lset input, real time execution frequency F demonstration, pid control circuit adjusting parameter P, the setting value input of I, D, the input of forward running frequency setting value, forward operation start button, the input of inverted running frequency setting value, inverted running start button, automatic/hand selection knob.
As shown in Figure 1, control method is as follows: while automatically controlling, by the frequency converter running current I of Real-time Collection and running current setting value I
dcompare, work as I>I
dtime, automatically improve the output frequency F of frequency converter, thereby accelerate the discharging speed of Double screw pulp extruder, but output frequency F can not surpass the upper limit running frequency F setting
h; Work as I<I
dtime, automatically reduce the output frequency F of frequency converter, thus the discharging speed of the Double screw pulp extruder that slows down, but output frequency F can not be lower than the lower limit running frequency F setting
l; While manually controlling, press forward operation start button, Double screw pulp extruder is by the forward running frequency setting value operation of operating personnel's input; Press inverted running start button, Double screw pulp extruder is by the inverted running frequency setting value operation of operating personnel's input.
When occurring to stop up vexed car accident, control mode can be switched to " manually " by " automatically ", by operating personnel, manually rotate and reverse alternately controlling run, can remove quickly obturator, after getting through chokepoint, then control mode is gone back to " automatically ", return to normal production.
The present invention is gathered the real time datas such as running current, running frequency of frequency converter by field bus communication by PLC control device, control the output frequency of frequency converter through pid loop computing regulation output, thereby controls the travelling speed of Double screw pulp extruder; Operating personnel can be on touch control flow picture revise respectively respectively control parameter (as, electric current and upper and lower limit running frequency etc.) setting value; In higher extent of competence, P, I, the D etc. that can also distinguish redjustment and modification PID regulating loop control parameter, make its control procedure more smooth and steady.
The continuous detecting data of the solid content mass dryness fraction that the solid content mass dryness fraction that adopts control system of the present invention and control method production control is produced with original Double screw pulp extruder control technology are compared, its solid content mass dryness fraction is brought up to more than 30% by 25% left and right, and the homogeneity of output solid content and mass dryness fraction controllability are all enhanced; Effectively reduce the probability that Double screw pulp extruder unrestrained material occurs and stops up vexed car, improved its production efficiency; The ways and means that solves accidental vexed car accident is also provided.
Claims (2)
1. the automatic control system of a Double screw pulp extruder, it is characterized in that, this system includes and is installed in electrical control cubicles for controlling the frequency converter of Double screw pulp extruder starter motor and for controlling the PLC control device of frequency converter, be installed on electrical control cubicles door-plate or on execute-in-place platform the touch control flow for operating personnel's setup control parameter and watch-dog running status, between frequency converter and PLC control device, adopt fieldbus network to carry out communication and be connected, between PLC control device and touch control flow, adopt Industrial Ethernet to carry out communication and be connected; The control parameter arranging on the interface of touch control flow includes running current setting value I
dinput, real-time current I show, upper limit running frequency F
hset input, lower limit running frequency F
lset input, real time execution frequency F demonstration, pid control circuit adjusting parameter P, the setting value input of I, D, the input of forward running frequency setting value, forward operation start button, the input of inverted running frequency setting value, inverted running start button, automatic/hand selection knob.
2. a kind of control method of automatic control system of Double screw pulp extruder as claimed in claim 1, is characterized in that, while automatically controlling, by the frequency converter running current I of Real-time Collection and running current setting value I
dcompare, work as I>I
dtime, automatically improve the output frequency F of frequency converter, thereby accelerate the discharging speed of Double screw pulp extruder, but output frequency F can not surpass the upper limit running frequency F setting
h; Work as I<I
dtime, automatically reduce the output frequency F of frequency converter, thus the discharging speed of the Double screw pulp extruder that slows down, but output frequency F can not be lower than the lower limit running frequency F setting
l; While manually controlling, press forward operation start button, Double screw pulp extruder is by the forward running frequency setting value operation of operating personnel's input; Press inverted running start button, Double screw pulp extruder is by the inverted running frequency setting value operation of operating personnel's input.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310681481.2A CN103744364A (en) | 2013-12-13 | 2013-12-13 | Automatic control system and control method for double-spiral pulp extruder |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310681481.2A CN103744364A (en) | 2013-12-13 | 2013-12-13 | Automatic control system and control method for double-spiral pulp extruder |
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| CN103744364A true CN103744364A (en) | 2014-04-23 |
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| CN201310681481.2A Pending CN103744364A (en) | 2013-12-13 | 2013-12-13 | Automatic control system and control method for double-spiral pulp extruder |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111217106A (en) * | 2020-01-10 | 2020-06-02 | 山东传诚环保科技有限公司 | Impeller feeder control system and control method |
| CN114039518A (en) * | 2021-10-26 | 2022-02-11 | 中信重工机械股份有限公司 | Intelligent stepping adjusting method of large ball press based on current control |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202989654U (en) * | 2012-12-03 | 2013-06-12 | 曲阜嘉信电气有限公司 | Frequency conversion control device of screw press master |
-
2013
- 2013-12-13 CN CN201310681481.2A patent/CN103744364A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202989654U (en) * | 2012-12-03 | 2013-06-12 | 曲阜嘉信电气有限公司 | Frequency conversion control device of screw press master |
Non-Patent Citations (2)
| Title |
|---|
| 肖汛: "高浓挤浆设备参数软测量及自动控制的研究", 《万方数据库》 * |
| 邵文权，等: "基于PLC和触摸屏的交流变频调速系统设计", 《现代电子技术》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111217106A (en) * | 2020-01-10 | 2020-06-02 | 山东传诚环保科技有限公司 | Impeller feeder control system and control method |
| CN114039518A (en) * | 2021-10-26 | 2022-02-11 | 中信重工机械股份有限公司 | Intelligent stepping adjusting method of large ball press based on current control |
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| C06 | Publication | ||
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent of invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 650106 No. 41, medical Road, hi tech Zone, Yunnan, Kunming Applicant after: Yunnan Zhongyan Reconstituted Tobacco Co., Ltd. Address before: 650106 No. 41, medical Road, hi tech Zone, Yunnan, Kunming Applicant before: Yunnan Zhongyan Kunchuan Ruisheng Technology Co., Ltd. |
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| COR | Change of bibliographic data |
Free format text: CORRECT: APPLICANT; FROM: YUNNAN ZHONGYAN KUNCHUAN RUISHENG TECHNOLOGY CO., LTD. TO: YUNNAN ZHONGYAN RECONSTITUTED TOBACCO CO., LTD. |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140423 |