CN103630217A - Electronic scale outlet balance flow control method - Google Patents
Electronic scale outlet balance flow control method Download PDFInfo
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- CN103630217A CN103630217A CN201210310757.1A CN201210310757A CN103630217A CN 103630217 A CN103630217 A CN 103630217A CN 201210310757 A CN201210310757 A CN 201210310757A CN 103630217 A CN103630217 A CN 103630217A
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Abstract
An electronic scale outlet balance flow control method is provided; material passes a blanking zone, a weighting zone and a discharging zone of the electronic scale in sequence, and fast passes an electronic scale discharge outlet. After the material passes the weighting zone, material weight q (t) on per unit length of a belt of the weighting zone is stacked along the discharging zone length; the signal is taken on a stack pulling point; integral operation is carried out to the running speed v (t) of the material on the belt, thereby obtaining instantaneous flow; the instantaneous flow is compared with a set flow; the running speed of the belt is controlled through adjusting and changing the running speed v (t) of the material on the belt by PID. Compared with the prior art, the outlet balance flow control mode is added; through employing the control method, the follow up equipment real material flow increasing problem of caused by an inner control method and insufficient material supply of a belt scale in the prior art can be prevented, thereby enabling the outlet output flow to comply with the control requirement, and realizing the purpose of adding the applicability with downstream equipment.
Description
Technical field
The present invention relates in tobacco business, the flow control mode of control type electronic scale, is especially adapted to the control of electronic belt scale discharging opening instantaneous delivery.
Background technology
At present, domestic tobacco business is produced by control type electronic scale structure as shown in Figure 1.When material during by Weighing Area its instantaneous delivery at its Weighing Area, carry out its instantaneous delivery computing, its instantaneous delivery in the T time interval adopts following integration type to represent:
W=q(t)V(t)dt
In formula:
The instantaneous delivery of institute's convey materials in the W:T time interval;
Q(t): the weight of material in belt unit length
V(t): the travelling speed of material on belt
Wherein:
Q(t)=(V-V0) * K* weight design factor (definite value)
V-current load code value
V0-zero value code value
The K value of K-belt conveyer scale
Traditional control method is to belong to Weighing Area weighing apparatus flow rate mode, rather than outlet weighing apparatus flow rate mode.As shown in Figure 3, when material is when its Weighing Area, supplied materials speed does not catch up with, that is: q(t) while reducing, by PID, improves V(t), thereby realize the object of its flow of control.When belt speed improves, discharge zone material fast from outlet pass through, cause increasing suddenly by the actual flow of upstream device, thus affect upstream device normal operation.
Summary of the invention
For the deficiencies in the prior art part, the invention provides a kind of electronic scale outlet weighing apparatus flow control methods, to realize, stablize its outlet instantaneous delivery object.
For achieving the above object, technical solution of the present invention is:
Electronic scale outlet weighing apparatus flow control methods, material is sequentially behind the feeding zone of electronic scales, Weighing Area, discharge zone, fast by electronic scale discharging opening.Material is after Weighing Area, by the weight of material q(t in Weighing Area belt unit length) along discharge zone length, carry out storehouse; In this signal taking-up of naming a person for a particular job of popping; With the travelling speed v(t of current material on belt) carry out integral operation, obtain instantaneous delivery; By this instantaneous delivery with set throughput ratio; By PID, regulate and change the travelling speed v(t of material on belt) control belt travelling speed.
Further, described popping a little according to electronic scales discharging opening location positioning.
The usefulness of technique scheme is:
Compared with prior art, the present invention is by the weighing apparatus flow control mode of increasing export.By increasing this control mode, avoid existing belt to claim the problem due to internal control mode and the actual mass flow increase of the material follow-up equipment causing under feeding, make its outlet delivery rate meet control requirement, thereby reach the object that increases itself and upstream device applicability.
Accompanying drawing explanation
Fig. 1 is electronic scale structural scheme of mechanism of the present invention;
Fig. 2 is that the present invention exports weighing apparatus flow control schematic flow sheet;
Fig. 3 is prior art Weighing Area weighing apparatus flow control mode outlet material flow schematic diagram.
Embodiment
The present invention is now described in conjunction with the accompanying drawings and embodiments.
As shown in Figure 1, tradition Weighing Area weighing apparatus flow control mode is to electronic scale, to send enabling signal when the material of limited tube arrives to a certain degree, motor 2 drives live-roller 3 and dragging roller 4 to drive belt 5 operations, material is delivered to Weighing Area B through feeding zone A, in Weighing Area B outlet, calculate its instantaneous delivery, when its instantaneous delivery and setting flow generation deviation, by PID, regulate its motor 2 output frequencies, thereby change belt 5 travelling speed, realize the control object of its stable instantaneous delivery.When material occurs in the situation of undersupply, PID, by increasing frequency converter frequency, makes electronic scale high-speed cruising, and the material of discharge zone C passes through electronic scale discharging opening fast simultaneously, thereby causes the actual mass flow of follow-up equipment significantly to increase.As shown in Figure 2, the present invention solves this problem by the weighing apparatus flow control mode of increasing export.Be material after Weighing Area B, the loading signal of this weighing section is carried out to storehouse along discharging section, namely by the weight of material q(t in Weighing Area B belt unit length) along discharge zone C length, carry out storehouse.According to electronic scale discharging opening location positioning, pop a little, and in this this loading signal taking-up of naming a person for a particular job of popping, with the travelling speed v(t of current material on belt) carry out integral operation, obtain instantaneous delivery.By this instantaneous delivery with set throughput ratio, by PID, regulate and change the travelling speed v(t of material on belt) control belt travelling speed, thereby realize, stablize electronics and weigh up a mouthful flow, realize the outlet flow control of weighing.
Claims (2)
1. electronic scale exports weighing apparatus flow control methods, material is sequentially behind the feeding zone of electronic scales, Weighing Area, discharge zone, fast by electronic scale discharging opening, it is characterized in that: material is after Weighing Area, by the weight of material q(t in Weighing Area belt unit length) along discharge zone length, carry out storehouse; In this signal taking-up of naming a person for a particular job of popping; With the travelling speed v(t of current material on belt) carry out integral operation, obtain instantaneous delivery; By this instantaneous delivery with set throughput ratio; By PID, regulate and change the travelling speed v(t of material on belt) control belt travelling speed.
2. electronic scale outlet weighing apparatus flow control methods as claimed in claim 1, is characterized in that: described pops a little according to electronic scales discharging opening location positioning.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210310757.1A CN103630217A (en) | 2012-08-28 | 2012-08-28 | Electronic scale outlet balance flow control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210310757.1A CN103630217A (en) | 2012-08-28 | 2012-08-28 | Electronic scale outlet balance flow control method |
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| CN103630217A true CN103630217A (en) | 2014-03-12 |
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| CN201210310757.1A Pending CN103630217A (en) | 2012-08-28 | 2012-08-28 | Electronic scale outlet balance flow control method |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104001454A (en) * | 2014-05-04 | 2014-08-27 | 洛阳凯美胜石化设备有限公司 | Closed-loop control apparatus and method for feeding system |
| CN105668185A (en) * | 2016-04-14 | 2016-06-15 | 南京通晟自控系统有限公司 | Operating state detecting device and method for belt conveyor |
| CN106932060A (en) * | 2017-03-28 | 2017-07-07 | 山东博硕自动化技术有限公司 | A kind of material continuous metering distribution |
| CN110207796A (en) * | 2019-03-14 | 2019-09-06 | 红塔烟草(集团)有限责任公司 | A kind of online metering type belted electronic balance flow control methods |
| CN110501057A (en) * | 2019-09-03 | 2019-11-26 | 武汉开锐海洋起重技术有限公司 | Bulk material unsteady flow Weighing method |
| CN111623857A (en) * | 2020-06-10 | 2020-09-04 | 上海大和衡器有限公司 | High-precision multi-point metering intelligent belt scale |
| CN114719945A (en) * | 2022-04-01 | 2022-07-08 | 广东中烟工业有限责任公司 | Self-adaptive method, system and computer medium for flow control precision of controllable electronic belt scale |
| CN115352836A (en) * | 2022-08-22 | 2022-11-18 | 龙岩烟草工业有限责任公司 | Material flow control method and device in tobacco material conveying system |
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- 2012-08-28 CN CN201210310757.1A patent/CN103630217A/en active Pending
Patent Citations (4)
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104001454A (en) * | 2014-05-04 | 2014-08-27 | 洛阳凯美胜石化设备有限公司 | Closed-loop control apparatus and method for feeding system |
| CN105668185A (en) * | 2016-04-14 | 2016-06-15 | 南京通晟自控系统有限公司 | Operating state detecting device and method for belt conveyor |
| CN105668185B (en) * | 2016-04-14 | 2017-10-13 | 南京通晟自控系统有限公司 | The running state detecting device and detection method of a kind of belt conveyor apparatus |
| CN106932060A (en) * | 2017-03-28 | 2017-07-07 | 山东博硕自动化技术有限公司 | A kind of material continuous metering distribution |
| CN110207796A (en) * | 2019-03-14 | 2019-09-06 | 红塔烟草(集团)有限责任公司 | A kind of online metering type belted electronic balance flow control methods |
| CN110501057A (en) * | 2019-09-03 | 2019-11-26 | 武汉开锐海洋起重技术有限公司 | Bulk material unsteady flow Weighing method |
| CN110501057B (en) * | 2019-09-03 | 2021-02-23 | 武汉开锐海洋起重技术有限公司 | Bulk material dynamic and static coupling weighing metering method |
| CN111623857A (en) * | 2020-06-10 | 2020-09-04 | 上海大和衡器有限公司 | High-precision multi-point metering intelligent belt scale |
| CN114719945A (en) * | 2022-04-01 | 2022-07-08 | 广东中烟工业有限责任公司 | Self-adaptive method, system and computer medium for flow control precision of controllable electronic belt scale |
| CN115352836A (en) * | 2022-08-22 | 2022-11-18 | 龙岩烟草工业有限责任公司 | Material flow control method and device in tobacco material conveying system |
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Application publication date: 20140312 |