CN111111909A - Bulk ferromagnetic impurity removing device - Google Patents
Bulk ferromagnetic impurity removing device Download PDFInfo
- Publication number
- CN111111909A CN111111909A CN202010083183.3A CN202010083183A CN111111909A CN 111111909 A CN111111909 A CN 111111909A CN 202010083183 A CN202010083183 A CN 202010083183A CN 111111909 A CN111111909 A CN 111111909A
- Authority
- CN
- China
- Prior art keywords
- electromagnetic chuck
- metal detector
- belt conveyor
- guide rail
- electromagnetic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000005294 ferromagnetic effect Effects 0.000 title claims abstract description 27
- 239000012535 impurity Substances 0.000 title claims abstract description 26
- 239000002184 metal Substances 0.000 claims abstract description 55
- 229910052751 metal Inorganic materials 0.000 claims abstract description 55
- 238000000034 method Methods 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims description 19
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 16
- 230000005291 magnetic effect Effects 0.000 claims description 9
- 229910052742 iron Inorganic materials 0.000 claims description 8
- 238000007599 discharging Methods 0.000 claims description 6
- 239000013590 bulk material Substances 0.000 claims description 5
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 238000005452 bending Methods 0.000 claims description 2
- 230000005389 magnetism Effects 0.000 claims description 2
- 239000000356 contaminant Substances 0.000 claims 2
- 239000004566 building material Substances 0.000 abstract description 2
- 239000004568 cement Substances 0.000 abstract description 2
- 239000000919 ceramic Substances 0.000 abstract description 2
- 239000003245 coal Substances 0.000 abstract description 2
- 239000011521 glass Substances 0.000 abstract description 2
- 238000005272 metallurgy Methods 0.000 abstract description 2
- 238000002360 preparation method Methods 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- 238000007885 magnetic separation Methods 0.000 abstract 1
- 239000006148 magnetic separator Substances 0.000 abstract 1
- 239000004744 fabric Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
- B03C1/02—Magnetic separation acting directly on the substance being separated
- B03C1/16—Magnetic separation acting directly on the substance being separated with material carriers in the form of belts
- B03C1/18—Magnetic separation acting directly on the substance being separated with material carriers in the form of belts with magnets moving during operation
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention discloses a bulk ferromagnetic impurity removing device which consists of an electromagnetic chuck arranged above a belt conveyor, an upper metal detector arranged above the belt conveyor, a lower metal detector arranged below the belt conveyor, an electromagnetic chuck moving guide rail, an electromagnetic chuck traveling mechanism, a controller, a fast thyristor, a rectifying unit and a phase-shifting transformer. The method is widely applied to the industries of metallurgy, mines, coal preparation plants, power plants, ceramics, glass, cement, building materials, chemical industry, garbage treatment and food and feed processing. The magnetic separator has the characteristics of electric energy saving and high magnetic separation efficiency.
Description
Technical Field
The invention belongs to the protection field of bulk material conveying facilities, belongs to bulk material impurity removing equipment, and relates to a bulk material ferromagnetic impurity removing device.
Background
Bulk materials are conveyed mainly by a belt conveyor, ferromagnetic impurities such as bucket teeth, sieve bars and the like are easily mixed into the bulk materials in the processes of loading, unloading, screening and the like, and the ferromagnetic impurities can cause damage to equipment once entering mechanical equipment such as a crusher, a grinder and the like, particularly accidents that large and long iron pieces crack a conveying belt occur. The traditional iron remover has better performance on the absorbing and removing capacity of ferromagnetic impurities on the surface of a material, but the absorbing and removing capacity of the ferromagnetic impurities pressed below the material is unsatisfactory, particularly when some minerals and the like have certain magnetic materials, the materials can be absorbed together when the magnetic force of the iron remover is too large, and the ferromagnetic impurities with too small magnetic force of the iron remover cannot be absorbed.
Disclosure of Invention
The invention provides a bulk material ferromagnetic impurity removing device which can automatically adjust the magnetic force of a sucker according to the condition of ferromagnetic impurities in materials, accurately select ferromagnetic impurities in the materials by adjusting the magnetic frequency and efficiently save energy. The method is widely applied to the industries of metallurgy, mines, coal preparation plants, power plants, ceramics, glass, cement, building materials, chemical industry, garbage treatment and food and feed processing.
The bulk ferromagnetic impurity removing device comprises an electromagnetic chuck 3 arranged above a belt conveyor 1, an upper metal detector 5 arranged above the belt conveyor 1, a lower metal detector 4 arranged below the belt conveyor 1, an electromagnetic chuck moving guide rail 2, an electromagnetic chuck traveling mechanism 6, a controller 7, a fast thyristor 8, a rectifying unit 9 and a phase-shifting transformer 10, and is characterized in that: an electromagnetic chuck moving guide rail 2 is arranged above a material layer at the tail part of the belt conveyor 1, an electromagnetic chuck traveling mechanism 6 is arranged on the electromagnetic chuck moving guide rail 2, and an electromagnetic chuck 3 is hung on the electromagnetic chuck traveling mechanism 6; the method comprises the following steps that a metal detector 5 is installed above a front fabric layer of an electromagnetic chuck 3 in the feeding direction of a belt conveyor 1, a lower metal detector 4 is installed on the back face of a front belt of the electromagnetic chuck 3 in the feeding direction of the belt conveyor 1, the lower metal detector 4 and the upper metal detector 5 are connected with a controller 7 through signal lines, the controller 7 is connected with a gate pole of a fast thyristor 8, an anode and a cathode of the fast thyristor 8 are respectively connected with a rectifying unit 9 and the electromagnetic chuck 3, and the power supply side of the rectifying unit 9 is connected with a phase-shifting transformer 10;
the electromagnetic chuck moving guide rail 2 is of an L-shaped structure, and a standby position switch 12 and a discharging position switch 11 are respectively arranged at two ends of the guide rail;
the rectifying unit 9 and the phase-shifting transformer 10 form a 12-pulse rectifying unit.
After the lower metal detector 4 and the upper metal detector 5 detect the metal signals, the controller 7 is used for conducting the fast thyristor 8 to enable the electromagnetic chuck 3 to generate magnetic force, and the electromagnetic chuck running mechanism 6 is started to drive the electromagnetic chuck to move along the electromagnetic chuck moving guide rail 2 and the material layer at the synchronous speed; when the electromagnetic chuck traveling mechanism 6 reaches the tail end unloading position switch 11 of the electromagnetic chuck moving guide rail 2, the fast thyristor 8 is turned off, and the electromagnetic chuck traveling mechanism 6 drives the electromagnetic chuck to return to the standby position along the electromagnetic chuck moving guide rail 2 to wait for a controller signal.
When the lower metal detector 4 detects a strong metal signal and the upper metal detector 5 detects a weak metal signal, the fast thyristor 8 is completely conducted, and the controller 7 sends a 0-180-degree pulse trigger signal to the fast thyristor 8 after 1-2S, wherein the pulse frequency is 50-200 Hz until the electromagnetic chuck 3 reaches the unloading position and the switch 11 is turned off; when the upper metal detector 5 detects a strong metal signal and the lower metal detector 4 detects a weak metal signal, the conduction angle of the fast thyristor 8 is 40-80 degrees.
Drawings
The invention is described in further detail below with reference to the following figures and detailed description:
FIG. 1 is a schematic top view of the bulk ferromagnetic impurity removal device of the present invention;
fig. 2 is a main circuit diagram of the bulk ferromagnetic impurity removing device of the invention.
In the figure: the device comprises a belt conveyor 1, an electromagnetic chuck moving guide rail 2, an electromagnetic chuck 3, a lower metal detector 4, an upper metal detector 5, an electromagnet driving device 6, a controller 7, a fast thyristor 8, a rectifying unit 9, a phase-shifting transformer 10, a discharging position switch 11 and a standby position switch 12.
Detailed Description
The bulk ferromagnetic impurity removing device comprises a belt conveyor 1, an electromagnetic chuck moving guide rail 2, an electromagnetic chuck 3, a lower metal detector 4, an upper metal detector 5, an electromagnetic chuck traveling mechanism 6, a controller 7, a fast thyristor 8, a rectifying unit 9 and a phase-shifting transformer 10, and is characterized in that: an electromagnetic chuck moving guide rail 2 is arranged above a material layer at the tail part of the belt conveyor 1, an electromagnetic chuck traveling mechanism 6 is arranged on the electromagnetic chuck moving guide rail 2, and an electromagnetic chuck 3 is hung on the electromagnetic chuck traveling mechanism 6; the method comprises the following steps that a metal detector 5 is installed above a front fabric layer of an electromagnetic chuck 3 in the feeding direction of a belt conveyor 1, a lower metal detector 4 is installed on the back face of a front belt of the electromagnetic chuck 3 in the feeding direction of the belt conveyor 1, the lower metal detector 4 and the upper metal detector 5 are connected with a signal input interface of a controller 7 through signal lines, a signal output interface of the controller 7 is connected with a gate pole of a fast thyristor 8, an anode and a cathode of the fast thyristor 8 are respectively connected with a rectifying unit 9 and the electromagnetic chuck 3, and the power supply side of the rectifying unit 9 is connected with a phase-shifting transformer 10;
the electromagnetic chuck moving guide rail 2 is of an L-shaped structure, wherein the long side of the electromagnetic chuck moving guide rail is superposed with the longitudinal center line of the belt conveyor 1 on the top view, the length of the wide side is greater than the width of the belt conveyor 1, a standby position switch 12 and a discharging position switch 11 are respectively arranged at the two ends of the guide rail, and a scrap iron collecting facility is arranged below the discharging position switch 11;
the rectifying unit 9 and the phase-shifting transformer 10 form a 12-pulse rectifying unit.
After the lower metal detector 4 and the upper metal detector 5 detect the metal signals, the controller 7 is used for conducting the fast thyristor 8 to enable the electromagnetic chuck 3 to generate magnetic force and adsorb ferromagnetic impurities in the materials; meanwhile, the electromagnetic chuck traveling mechanism 6 is started to drive the electromagnetic chuck to move along the electromagnetic chuck moving guide rail 2 and the material layer at the synchronous speed, and the electromagnetic chuck moves away from the belt conveyor 1 according to the bending track of the electromagnetic chuck moving guide rail 2; when the electromagnetic chuck moving guide rail reaches the unloading position switch 11 of the electromagnetic chuck moving guide rail 2, the fast thyristor 8 is turned off, ferromagnetic impurities adsorbed on the electromagnetic chuck 3 lose magnetism and fall off in a scrap iron collecting facility, and the electromagnetic chuck traveling mechanism 6 drives the electromagnetic chuck to return to a standby position along the electromagnetic chuck moving guide rail 2 to wait for the next controller signal.
When the metal signal detected by the lower metal detector 4 is greater than 75%, and the metal signal detected by the upper metal detector 5 is less than 30%, proves that ferromagnetic impurities are positioned below the materials, the fast thyristor 8 is completely conducted, the electromagnetic chuck generates 100% magnetic force, the controller 7 sends 0-180 DEG pulse trigger signals to the fast thyristor 8 after 1-2S, the pulse frequency is 50-200 Hz, the materials pressed above the ferromagnetic impurities are shaken and separated under the action of high-frequency vibration, when the moving track of the electromagnetic chuck walking mechanism 6 is vertical to the running track of the belt conveyor 1, ferromagnetic impurities are firmly adsorbed on the electromagnetic chuck, at the moment, the pulse signal disappears, the conduction angle of the fast thyristor 8 is changed into 30-50 degrees, the electric energy consumption is reduced until the electromagnetic chuck 3 reaches the unloading position switch 11 and the fast thyristor 8 is turned off; when the metal signal detected by the upper metal detector 5 is greater than 75% and the metal signal detected by the lower metal detector 4 is less than 30%, it is proved that ferromagnetic impurities are located on the surface of the material, the fast thyristor 8 is turned on, the conduction angle of the fast thyristor 8 is 40-80 degrees, and when the moving track of the electromagnetic chuck walking mechanism 6 is vertical to the running track of the belt conveyor 1, the conduction angle of the fast thyristor 8 is changed to 30-50 degrees until the electromagnetic chuck 3 reaches the unloading position switch 11, and the fast thyristor 8 is turned off.
Claims (3)
1. Bulk material ferromagnetic impurity clearing device is by installing electromagnetic chuck (3) above band conveyer (1), last metal detector (5) above band conveyer (1), lower metal detector (4) and electromagnetic chuck movable guide (2) of band conveyer (1) lower part, electromagnetic chuck walk line mechanism (6), controller (7), quick thyristor (8), rectifier unit (9), phase-shifting transformer (10) and constitute its characterized in that: an electromagnetic chuck moving guide rail (2) is arranged above a material layer at the tail part of the belt conveyor (1), an electromagnetic chuck traveling mechanism (6) is arranged on the electromagnetic chuck moving guide rail (2), and an electromagnetic chuck (3) is hung on the electromagnetic chuck traveling mechanism (6); the method comprises the steps that a metal detector (5) is installed above a front material layer of an electromagnetic suction disc (3) in the feeding direction of a belt conveyor (1), a lower metal detector (4) is installed on the back face of a front belt of the electromagnetic suction disc (3) in the feeding direction of the belt conveyor (1), the lower metal detector (4) and the upper metal detector (5) are connected with a controller (7) through signal lines, the controller (7) is connected with a gate pole of a fast thyristor (8), an anode and a cathode of the fast thyristor (8) are respectively connected with a rectifying unit (9) and the electromagnetic suction disc (3), and a power supply side of the rectifying unit (9) is connected with a phase-shifting transformer (10);
the electromagnetic chuck moving guide rail (2) is of an L-shaped structure, wherein the long side is superposed with the longitudinal center line of the belt conveyor (1) on the top view, the length of the wide side is greater than the width of the belt conveyor (1), a standby position switch (12) and a discharging position switch (11) are respectively arranged at the two ends of the guide rail, and a scrap iron collecting facility is arranged below the discharging position switch (11).
2. The bulk ferromagnetic contaminant removal device of claim, wherein: after the lower metal detector (4) and the upper metal detector (5) detect metal signals, the controller (7) is used for conducting the fast thyristor (8) to enable the electromagnetic chuck (3) to generate magnetic force and adsorb ferromagnetic impurities in the materials; meanwhile, the electromagnetic chuck traveling mechanism (6) is started to drive the electromagnetic chuck to move along the electromagnetic chuck moving guide rail (2) and the material layer at the synchronous speed, and the electromagnetic chuck leaves the belt conveyor (1) according to the bending track of the electromagnetic chuck moving guide rail (2); when the electromagnetic chuck moving guide rail arrives at the unloading position switch (11) of the electromagnetic chuck moving guide rail (2), the fast thyristor (8) is turned off, ferromagnetic impurities adsorbed on the electromagnetic chuck (3) lose magnetism and fall off in a scrap iron collecting facility, and the electromagnetic chuck traveling mechanism (6) drives the electromagnetic chuck to return to a standby position along the electromagnetic chuck moving guide rail (2) to wait for the next controller signal.
3. The bulk ferromagnetic contaminant removal device of claim, wherein: when the metal signal detected by the lower metal detector (4) is more than 75% and the metal signal detected by the upper metal detector (5) is less than 30%, the fast thyristor (8) is completely conducted, the electromagnetic chuck generates 100% magnetic force, the controller (7) sends a 0-180-degree pulse trigger signal to the fast thyristor (8) after 1-2S, the pulse frequency is 50-200 Hz, when the moving track of the electromagnetic chuck walking mechanism (6) is vertical to the running track of the belt conveyor (1), the conduction angle of the fast thyristor (8) is changed to 30-50 degrees until the fast thyristor (8) is turned off when the electromagnetic chuck (3) reaches the unloading position switch (11); when the metal signal detected by the upper metal detector (5) is larger than 75% and the metal signal detected by the lower metal detector (4) is smaller than 30%, the fast thyristor (8) is conducted, the conduction angle of the fast thyristor is 40-80 degrees, when the moving track of the electromagnetic chuck walking mechanism (6) is vertical to the moving track of the belt conveyor (1), the conduction angle of the fast thyristor (8) is changed into 30-50 degrees until the electromagnetic chuck (3) reaches the unloading position switch (11) and the fast thyristor (8) is turned off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010083183.3A CN111111909B (en) | 2020-02-08 | 2020-02-08 | Bulk ferromagnetic impurity removing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010083183.3A CN111111909B (en) | 2020-02-08 | 2020-02-08 | Bulk ferromagnetic impurity removing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111111909A true CN111111909A (en) | 2020-05-08 |
| CN111111909B CN111111909B (en) | 2021-10-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010083183.3A Expired - Fee Related CN111111909B (en) | 2020-02-08 | 2020-02-08 | Bulk ferromagnetic impurity removing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111111909B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116790034A (en) * | 2022-04-27 | 2023-09-22 | 刘婷婷 | Feeding system for reclaimed rubber desulfurization device |
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| CN201030327Y (en) * | 2007-05-14 | 2008-03-05 | 扬中市联合电磁电器有限公司 | Transportation electromagnetic self-unloading iron removing system |
| CN101231263A (en) * | 2007-01-26 | 2008-07-30 | 宝山钢铁股份有限公司 | Method for detecting iron member using magnetosensitive element by constant magnetic deironing device |
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| CN202538923U (en) * | 2012-03-31 | 2012-11-21 | 沈阳隆基电磁科技股份有限公司 | Belt type electromagnetic iron removal control system for steel slag |
| CN206778697U (en) * | 2017-06-09 | 2017-12-22 | 中国葛洲坝集团水泥有限公司 | A kind of intelligent electromagnetic tramp iron separator for cement producing line |
| CN208194657U (en) * | 2018-07-13 | 2018-12-07 | 中国地质科学院郑州矿产综合利用研究所 | Excitation system of electromagnetic separator |
| CN209333959U (en) * | 2018-12-13 | 2019-09-03 | 江苏扬联磁电科技有限公司 | Viscose rayon produces special intelligent shunt opening formula electric magnetic iron remover |
| US20200010278A1 (en) * | 2018-07-09 | 2020-01-09 | Novelis Inc. | Systems and methods for improving the stability of non-ferrous metals on a conveyor |
-
2020
- 2020-02-08 CN CN202010083183.3A patent/CN111111909B/en not_active Expired - Fee Related
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020027095A1 (en) * | 1998-12-08 | 2002-03-07 | Mitsubishi Heavy Industries, Ltd. | Method and apparatus for classifying and recovering the main components of used batteries |
| CN2549220Y (en) * | 2002-04-04 | 2003-05-07 | 广东省机械研究所 | Adjustable miniature electromagnetic pump |
| CN101231263A (en) * | 2007-01-26 | 2008-07-30 | 宝山钢铁股份有限公司 | Method for detecting iron member using magnetosensitive element by constant magnetic deironing device |
| CN201030327Y (en) * | 2007-05-14 | 2008-03-05 | 扬中市联合电磁电器有限公司 | Transportation electromagnetic self-unloading iron removing system |
| CN101342514A (en) * | 2008-08-18 | 2009-01-14 | 张佃波 | Belt type recycling type magnetic separator for mine |
| CN202538923U (en) * | 2012-03-31 | 2012-11-21 | 沈阳隆基电磁科技股份有限公司 | Belt type electromagnetic iron removal control system for steel slag |
| CN206778697U (en) * | 2017-06-09 | 2017-12-22 | 中国葛洲坝集团水泥有限公司 | A kind of intelligent electromagnetic tramp iron separator for cement producing line |
| US20200010278A1 (en) * | 2018-07-09 | 2020-01-09 | Novelis Inc. | Systems and methods for improving the stability of non-ferrous metals on a conveyor |
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| CN209333959U (en) * | 2018-12-13 | 2019-09-03 | 江苏扬联磁电科技有限公司 | Viscose rayon produces special intelligent shunt opening formula electric magnetic iron remover |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116790034A (en) * | 2022-04-27 | 2023-09-22 | 刘婷婷 | Feeding system for reclaimed rubber desulfurization device |
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| Publication number | Publication date |
|---|---|
| CN111111909B (en) | 2021-10-15 |
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