CN104714565A - Control method with deviation rate adjustment function - Google Patents
Control method with deviation rate adjustment function Download PDFInfo
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- CN104714565A CN104714565A CN201510000405.XA CN201510000405A CN104714565A CN 104714565 A CN104714565 A CN 104714565A CN 201510000405 A CN201510000405 A CN 201510000405A CN 104714565 A CN104714565 A CN 104714565A
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Abstract
The invention provides a control method with a deviation rate adjustment function, and belongs to the field of mineral separation control. The control method is realized through a laser liquid level sensor, a PLC and a pneumatic adjustment valve, wherein the input of the pneumatic adjustment valve is connected with the output of the PLC, the input of the PLC is connected with the output of the laser liquid level sensor, the laser liquid level sensor is arranged inside a floating cell, and the pneumatic adjustment valve is connected with an ore pulp input pipe. By the adoption of the control method, adjustment control is accurate and the phenomena of unstable production and unstable product quality can be avoided.
Description
Technical field
The invention belongs to ore dressing control field, be specifically related to a kind of control method with deviation rate adaptation function.
Background technology
Floatation of iron ore froth level controls employing PID regulating loop and controls, and often regulating loop reforming phenomena occurs in production run, cause degree of regulation out of true, cause producing instability, product quality is also unstable.
Summary of the invention
The invention provides degree of regulation a kind of control method with deviation rate adaptation function accurately.
The present invention is made up of laser liquid-level sensor, PLC, pneumatic control valve, the input of pneumatic control valve connects the output of PLC, the input of PLC connects the output of laser liquid-level sensor, and laser liquid-level sensor setting is in flotation cell, and pneumatic control valve connects ore pulp input pipe.
The present invention gathers the mineral pulp level in flotation cell by laser liquid-level sensor and is transferred to programmable controller PLC; Programmable controller PLC carries out data processing:
1, when the pulp slurry place value gathered is higher than given level value, illustrate that controlled volume liquid level is greater than level set, the process that programmable controller PLC controls pneumatic control valve according to liquid level fall off rate is as follows:
(1), when liquid level fall off rate is less than given fall off rate, PLC closes pneumatic control valve, and the ore pulp entering flotation cell is reduced;
(2), when liquid level fall off rate is greater than given fall off rate, PLC controls 50% ~ 70% aperture of pneumatic control valve according to pneumatic control valve range, controls the inlet of ore pulp;
2, the foam on liquid level constantly scrapes by ore pulp scraper plate, mineral pulp level constantly declines, when the mineral pulp level in flotation cell is lower than given liquid level, controlled volume liquid level is less than level set, programmable controller PLC controls to open pneumatic control valve, increase ore pulp and enter flotation cell, PLC, according to liquid level fall off rate, compares with given fall off rate:
(1) when liquid level fall off rate is greater than given fall off rate, PLC controls the maximum opening of pneumatic control valve,
(2) when liquid level fall off rate is less than given fall off rate, PLC controls 50% ~ 70% aperture of pneumatic control valve according to pneumatic control valve range, controls the inlet of ore pulp.
Regulable control of the present invention is accurate, can avoid producing instability, and product quality is wild effect also.
Accompanying drawing explanation
Fig. 1 is the control principle drawing of invention.
Fig. 2 is PLC program composition block diagram of the present invention.
In figure, 1, flotation cell, 2, mixing channel, 3, pneumatic control valve, 4, ore pulp input pipe, 5, PLC, 6, laser liquid-level sensor, 7, ore pulp efferent duct.
Embodiment
Shown in Fig. 1, the present invention is made up of laser liquid-level sensor, PLC, pneumatic control valve, the input of pneumatic control valve connects the output of PLC, the input of PLC connects the output of laser liquid-level sensor, the input of laser liquid-level sensor connects the ore pulp discharging opening of floatation equipment, and the output of pneumatic control valve connects charging aperture.
PLC adopts Siemens 417 system.
Claims (1)
1. one kind has the control method of deviation rate adaptation function, be made up of laser liquid-level sensor, PLC, pneumatic control valve, the input of pneumatic control valve connects the output of PLC, the input of PLC connects the output of laser liquid-level sensor, laser liquid-level sensor setting is in flotation cell, and pneumatic control valve connects ore pulp input pipe; It is characterized in that laser liquid-level sensor gathers the mineral pulp level in flotation cell and is transferred to programmable controller PLC; Programmable controller PLC carries out data processing:
When the pulp slurry place value gathered is higher than given level value, illustrate that controlled volume liquid level is greater than level set, the process that programmable controller PLC controls pneumatic control valve according to liquid level fall off rate is as follows:
(1), when liquid level fall off rate is less than given fall off rate, PLC closes pneumatic control valve, and the ore pulp entering flotation cell is reduced;
(2), when liquid level fall off rate is greater than given fall off rate, PLC controls 50% ~ 70% aperture of pneumatic control valve according to pneumatic control valve range, controls the inlet of ore pulp;
When the mineral pulp level in flotation cell is lower than given liquid level, controlled volume liquid level is less than level set, and programmable controller PLC controls to open pneumatic control valve, and increase ore pulp and enter flotation cell, PLC, according to liquid level fall off rate, compares with given fall off rate:
(1) when liquid level fall off rate is greater than given fall off rate, PLC controls the maximum opening of pneumatic control valve;
(2) when liquid level fall off rate is less than given fall off rate, PLC controls 50% ~ 70% aperture of pneumatic control valve according to pneumatic control valve range, controls the inlet of ore pulp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510000405.XA CN104714565A (en) | 2015-03-17 | 2015-03-17 | Control method with deviation rate adjustment function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510000405.XA CN104714565A (en) | 2015-03-17 | 2015-03-17 | Control method with deviation rate adjustment function |
Publications (1)
| Publication Number | Publication Date |
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| CN104714565A true CN104714565A (en) | 2015-06-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201510000405.XA Pending CN104714565A (en) | 2015-03-17 | 2015-03-17 | Control method with deviation rate adjustment function |
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| CN (1) | CN104714565A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105388919A (en) * | 2015-11-30 | 2016-03-09 | 加通汽车内饰(常熟)有限公司 | Liquid level controller |
| CN105834219A (en) * | 2016-05-05 | 2016-08-10 | 首钢京唐钢铁联合有限责任公司 | Rolling mill emulsion system water adding method and rolling mill emulsion system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102759388A (en) * | 2012-08-03 | 2012-10-31 | 北京憶众联创电气科技有限公司 | Foam-resisting liquid level detector |
| CN103398758A (en) * | 2013-08-08 | 2013-11-20 | 中冶北方（大连）工程技术有限公司 | Device for measuring liquid level of flotation pulp |
| CN103676989A (en) * | 2013-12-29 | 2014-03-26 | 金堆城钼业股份有限公司 | Liquid level automatic control system and method for small-sized flotation machine |
| CN103785532A (en) * | 2014-02-18 | 2014-05-14 | 云南锡业集团有限责任公司研究设计院 | Method for automatically monitoring tin ore table beneficiation |
| CN103941701A (en) * | 2014-04-29 | 2014-07-23 | 东北大学 | System and method for controlling operation of flotation industrial process under dual-network environment |
| CN104180874A (en) * | 2014-09-09 | 2014-12-03 | 青海盐湖工业股份有限公司 | Automatic control method and system for flotation liquid level of positive flotation technology |
-
2015
- 2015-03-17 CN CN201510000405.XA patent/CN104714565A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102759388A (en) * | 2012-08-03 | 2012-10-31 | 北京憶众联创电气科技有限公司 | Foam-resisting liquid level detector |
| CN103398758A (en) * | 2013-08-08 | 2013-11-20 | 中冶北方（大连）工程技术有限公司 | Device for measuring liquid level of flotation pulp |
| CN103676989A (en) * | 2013-12-29 | 2014-03-26 | 金堆城钼业股份有限公司 | Liquid level automatic control system and method for small-sized flotation machine |
| CN103785532A (en) * | 2014-02-18 | 2014-05-14 | 云南锡业集团有限责任公司研究设计院 | Method for automatically monitoring tin ore table beneficiation |
| CN103941701A (en) * | 2014-04-29 | 2014-07-23 | 东北大学 | System and method for controlling operation of flotation industrial process under dual-network environment |
| CN104180874A (en) * | 2014-09-09 | 2014-12-03 | 青海盐湖工业股份有限公司 | Automatic control method and system for flotation liquid level of positive flotation technology |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105388919A (en) * | 2015-11-30 | 2016-03-09 | 加通汽车内饰(常熟)有限公司 | Liquid level controller |
| CN105834219A (en) * | 2016-05-05 | 2016-08-10 | 首钢京唐钢铁联合有限责任公司 | Rolling mill emulsion system water adding method and rolling mill emulsion system |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150617 |