CN101231263A - Method for detecting iron member using magnetosensitive element by constant magnetic deironing device - Google Patents
Method for detecting iron member using magnetosensitive element by constant magnetic deironing device Download PDFInfo
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- CN101231263A CN101231263A CNA200710036862XA CN200710036862A CN101231263A CN 101231263 A CN101231263 A CN 101231263A CN A200710036862X A CNA200710036862X A CN A200710036862XA CN 200710036862 A CN200710036862 A CN 200710036862A CN 101231263 A CN101231263 A CN 101231263A
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- magneto sensor
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Abstract
The invention relates to a constant magnetic separator which can remove steel pieces included in materials from a conveying belt of scattering solid non-magnetic materials, and a method for detecting iron pieces by using the constant magnetic separator adopting a magneto sensor group. A plurality of magneto sensors are arranged between the magnetic poles of the constant magnet of the constant magnetic separator. The output of the magneto sensors is connected with a signal amplifying circuit which is connected with a comparison control circuit. After being operated by the comparison control circuit, the output is connected with a sheet iron removing belt running a power supply to control the sheet iron removing belt to rotate. The control relation of a plurality of detecting circuits formed by a plurality of magneto sensors is logic control, and the magneto sensors are hall sensors. The invention can automatically detect that whether any iron piece is sucked up by the magnet with simple setting and easy operation. The sheet iron removing belt is not needed to continuously run for a long time, and only when the iron piece is sucked up, the sheet iron removing belt runs. The electrical energy is saved, the mechanical wastage is little and the service life of the iron removing device can be prolonged.
Description
(1) technical field
The present invention relates to from the shape solid non-magnetic material conveyer belt that looses, remove the constant magnetic deironing device that is mingled with steel and iron parts in the material automatically; relating in particular to constant magnetic deironing device adopts the magneto sensor group to detect the method for ironware; exempt from damage with protection belt conveyer and later process equipment, can be applicable to industries such as metallurgy, coal, generating, cement, papermaking, harbour.
(2) background technology
Existing removing automatically with the belt constant magnetic deironing device both at home and abroad is mingled with the ironware technology and has two kinds in the non-magnetic material.First kind be on the material belt conveyer belt constant magnetic deironing device of device 2, control box 3, one abandon equipment such as iron charge bucket 4, referring to Fig. 8.When belt conveyer 5 starts operation, send enabling signal and deliver to control box 3, control box is connected iron removing belt operation power supply, make iron removing belt 7 rotations, accompany assorted ironware 9 in the non-magnetic material 10 of transportation along material direct of travel 8, when the assorted ironware that is mingled with in the non-magnetic material through permanent magnet 6 belows of the belt constant magnetic deironing device that suspension, magnetic field by permanent magnet picks up, and by rotating iron removing belt band on the belt tramp iron separator from the magnetic force district of permanent magnet, what arrive no magnetic abandons iron charge bucket 4 tops, assorted ironware loss of excitation is fallen under the effect of gravity and is abandoned in the iron charge bucket, finishes the work that removes the impurity elimination ironware in non-magnetic material.Send stop signal when the material belt conveyer stops, control box disconnects the iron removing belt power supply, stops the iron removing belt operation.
Second kind be on the material belt conveyer metal object detecting device of device, belt constant magnetic deironing device, control box, one abandon equipment such as iron charge bucket, it is to have increased metal detection device on first kind of permanent magnetic deironing apparatus basis, controls constant magnetic deironing device by metal detection device.Promptly when accompanying assorted ironware in the non-magnetic material of belt conveyer transportation, when the material direct of travel passes through metal detection device, metal detection device sends the metal detection signal and delivers to control box, control box is connected iron removing belt operation power supply, make the iron removing belt rotation, when the assorted ironware that is mingled with in the non-magnetic material during through the below of the permanent magnet of the belt constant magnetic deironing device that hangs, magnetic field by permanent magnet picks up, and by the magnetic force district of the iron removing belt band that does not stop on the belt constant magnetic deironing device to rotate from permanent magnet, arrive abandoning above the iron charge bucket of no magnetic, assorted ironware loss of excitation is fallen under the effect of gravity and is abandoned in the iron charge bucket, finishes the work that removes the impurity elimination ironware in non-magnetic material.When no longer accompanying assorted ironware in the non-magnetic material, metal detection device stops to send metal 1 detection signal, and control box disconnects the iron removing belt power supply, stops the iron removing belt operation, wait for that metal detection device sends the metal detection signal next time, repeat said process again.
Above-mentioned first kind of prior art is as long as the operation of material travelling belt has or not ironware regardless of in the material, and the iron removing belt of belt constant magnetic deironing device all must remain operation, and this permanent magnetic iron removal technology power consumption is big, mechanical loss is also big.Second kind of prior art is subjected to the restriction of metal detection device sensitivity, and what have can not be detected than small iron element, causes after causing a large amount of ironwares to gather easily excessive can not the rotation of iron removing belt load to be removed.Metal detection device is subject to disturb, and misoperation is many, waste electric power.Metal detection device costs an arm and a leg in addition, the apparatus cost height, and the Installation and Debugging difficulty can not be applicable to short and belt conveyer way traffic.
(3) summary of the invention
The object of the present invention is to provide a kind of constant magnetic deironing device to adopt the magneto sensor group to detect the method for ironware, this detection method can detect voluntarily and have or not ironware to be picked up by permanent magnet, be provided with simple, processing ease, iron removing belt does not need the long-time continuous running, only just turns round saves energy when having ironware to be picked up, mechanical loss is little, can prolong the serviceable life of tramp iron separator.
The present invention is achieved in that a kind of constant magnetic deironing device adopts the magneto sensor group to detect the method for ironware, it is characterized in that: between the magnetic pole of the permanent magnet of constant magnetic deironing device, some magneto sensors are housed, magneto sensor output connects the signal amplification circuit in the controller, signal amplification circuit connects comparison control circuit, and output connects the rotation of iron removing belt operation power supply control iron removing belt after the comparison control circuit computing.
A plurality of testing circuit control relation that described some magneto sensors are formed are or logic control; Described magneto sensor is the hall sensing device.
The control method of described magneto sensor is, at first enters test phase, and controller is finished the detection of each magneto sensor check point static magnetic field signal value automatically, and deposits in the storer of controller; Operation is made zero then, sets magneto sensor changes of magnetic field sensing range again, and changes of magnetic field sensing range setting value is positive and negative change absolute value, thereby sets the detection action sensitivity of magneto sensor.
The present invention is on the basis of existing belt constant magnetic deironing device, between the magnet magnetic pole of constant magnetic deironing device magneto sensor is housed, and detects tramp iron separator magnetic field of magnets situation of change by magneto sensor, thereby determines the situation of tramp iron separator magnet absorption ironware.The signal transformation that magneto sensor is detected is signal amplification circuit and the comparison control circuit in the input controller behind the voltage signal, output control iron removing belt operation power supply after the via controller computing, iron removing belt rotation when iron is arranged, the iron removing belt band that the assorted ironware that is picked up by permanent magnet tramp iron separator magnet is rotated is from the magnetic force district of permanent magnet, arrive abandoning above the iron charge bucket of no magnetic, assorted ironware loss of excitation is fallen under the effect of gravity and is abandoned in the iron charge bucket, finishes the work that removes the impurity elimination ironware in non-magnetic material; Iron removing belt is not rotated during iron-free, thereby has saved the energy, has reduced mechanical loss and has prolonged service life of equipment.When determining the accuracy of detection of magneto sensor, adopt self-learning method, made the determining and relative being easier to of debugging of magneto sensor.
The present invention compared with the prior art, its advantage is:
1, the present invention has the belt constant magnetic deironing device of magnetic field detection, does not need to install metal detector, and the magnetic field detection parts that had by tramp iron separator detect voluntarily and have or not metal to be picked up, and detects the ironware method and is easier to, and device constitutes simple.
2, iron removing belt does not need the long-time continuous running, just just carries out the running of short time, saves energy when having ironware to be picked up.
3, the present invention has the belt constant magnetic deironing device of magnetic field detection, does not move during owing to iron-free, and mechanical loss is little, can prolong the serviceable life of equipment for removing ferric ion.
(4) description of drawings
Fig. 1 is the deironing apparatus structural representation that contains constant magnetic deironing device of the present invention;
Fig. 2 is the belt constant magnetic deironing device and the controller architecture synoptic diagram of band magneto sensor;
Fig. 3 is the belt constant magnetic deironing device electrical control block diagram of band magneto sensor;
When Fig. 4 is the absorption of permanent magnet iron-free by the static synoptic diagram in the magnetic field of magneto sensor;
Fig. 5 passes through the field weakening situation synoptic diagram of magneto sensor when for permanent magnet iron absorption being arranged;
Magnetic field by magneto sensor when Fig. 6 has iron absorption for permanent magnet increases the situation synoptic diagram;
Fig. 7 is the belt constant magnetic deironing device steering logic figure of band magneto sensor;
Fig. 8 is existing continuous operation constant magnetic deironing device structural representation;
Among the figure: 2 belt constant magnetic deironing devices, 3 existing electric appliance control boxes, 4 abandon the iron charge bucket, 5 belt conveyers, 6 permanent magnet, 7 iron removing belt, 8 material direct of travels, 9 assorted ironwares, 10 non-magnetic materials, 11 iron removing belt drive motor, 12 iron removing belt driven rollers, 13 iron removing belt backing rolls, 14 tramp iron separator suspenders, 15 hang steel framework, 16 magneto sensors, 17 controllers (control box), 18 signal amplification circuits, 19 A/D converters (signal input A/D change-over circuit), 20 comparison control circuits.
(5) embodiment
The invention will be further described below in conjunction with the drawings and specific embodiments.
Referring to Fig. 1, Fig. 2, a kind of constant magnetic deironing device adopts the magneto sensor group to detect the method for ironware, be that some magneto sensors 16 are housed between the magnetic pole of constant magnetic deironing device 2 permanent magnet 6, magneto sensor 16 outputs connect signal amplification circuit 18, for comparison control circuit 20 direct Analog signals, signal amplification circuit 18 directly connects comparison control circuit 20.For comparison control circuit 20 processing digital signal, signal amplification circuit 18 should connect signal input A/D change-over circuit 19; A plurality of testing circuits outputs of some magneto sensor 16 compositions are each input point of access controllers 17 interior signals input A/D change-over circuits 19 respectively, digital quantity signal after 19 conversions of A/D change-over circuit is sent into comparison control circuit 20, connects 7 rotations of iron removing belt operation power supply control iron removing belt through output after comparison control circuit 20 computings.It is realized by following embodiment:
Referring to Fig. 1, Fig. 2, Fig. 3, a kind of deironing apparatus that adopts the magneto sensor group to detect the constant magnetic deironing device of ironware comprises that mainly 3, one of tramp iron separator controllers (control box) have the belt constant magnetic deironing device 2 of magnetic field detection, one and abandon iron charge bucket 4 three equipment components.The belt constant magnetic deironing device 2 that has magnetic field detection comprises permanent magnet 6, circulation deferrization belt 7, iron removing belt drive motor 11, iron removing belt driven roller 12, iron removing belt backing roll 13, detector for magnetic field.
Detector for magnetic field by some magneto sensors 16, signal amplification circuit 18, one forms the commercially available hall sensing device of magneto sensor 16 employings by the signal input A/D change-over circuit 19 and the comparison control circuit 20 of multichannel input.Magneto sensor 16 quantity are according to the size difference of belt constant magnetic deironing device 2 permanent magnet 6, and installing quantity is also different.Permanent magnet 6 sizes are greatly then many, the little then corresponding minimizing of size.Magneto sensor 16 is installed between two magnetic poles of permanent magnet 6, the changes of magnetic field testing circuit that several magneto sensor 16 and signal amplification circuit 18 are formed inserts each signal input part of signal input A/D change-over circuit 19 respectively, send into comparison control circuit 20 through the digital quantity signal that signal input A/D changes after z changes circuit 19 conversions, in order to detect two changes of magnetic field between the magnetic pole.Magneto sensor 16, promptly the hall sensing device has the characteristic that changes its internal resistance along with the variation of the magnetic field intensity of passing its normal direction.Therefore on permanent magnet 6 surfaces of tramp iron separator without any magnetic conductive substance, even the constant magnetic conductive substance of partial fixing is perhaps arranged, magnetic field between 6 two magnetic poles of permanent in this case magnet is changeless, by the magnetic field intensity that is installed in two magneto sensors 16 between the magnetic pole also is constant, this magnetic field intensity is known as static magnetic field strength, referring to Fig. 4; After having ironware 9 on the travelling belt of permanent magnet 6 belows, owing to the distribution that has changed former persevering magnet 6 space magnetic fields that enters of ironware 9, referring to Fig. 5, Fig. 6 by permanent magnet 6 absorption.According to actual conditions, the iron block 9 position differences that are adsorbed to permanent magnet 6 surfaces from travelling belt have following two kinds of situations:
A kind of is as shown in Figure 5, and iron block 9 is between two magnetic poles, and the magnetic line of force that at this moment passes magneto sensor 16 is reduced by iron block 9 bypasses; Another kind as shown in Figure 6, iron block 9 is near magnetic poles, the magnetic line of force that at this moment passes magneto sensor 16 increases to some extent because of the effect of iron block 9.Because 16 magnetic field spaces that can detect of single magneto sensor (being Hall element) are limited in scope, therefore must adopt many a plurality of loops of magneto sensor 16 compositions that are distributed in 6 liang of interpolars of permanent magnet to detect simultaneously, as long as have one tunnel magneto sensor 16 wherein to detect the variation in magnetic field like this, just can be used as signal output.
Referring to Fig. 2, when being arranged on permanent magnet 6 surfaces, iron block 9 absorption causes the change amount signal that magneto sensor 16 is small, convert voltage variety output to through magneto sensor (being Hall element) 16, after amplifying, operational amplifier 18 inputs to the A/D converter (being signal input A/D change-over circuit) 19 in the controller 17, multiple signals inputs A/D change-over circuit 19 will come from magneto sensor 16 and amplify through operational amplifier 18 after each road voltage variety input to comparison control circuit 20 again after being converted to digital quantity signal, a plurality of testing circuit control relation that some magneto sensors 16 are formed be " or " logic control; In the present embodiment, comparison control circuit 20 is a microprocessor; Each road changes of magnetic field detection signal is sent into microprocessor and is compared control and treatment, 7 operations of output control iron removing belt.
Because each check point magnetic field intensity is inconsistent during magneto sensor (being Hall element) 16 actual installation, the check point magnetic field intensity that has is bigger, the check point magnetic field intensity that has is less, for addressing this problem, present embodiment has adopted the method for " self study ", referring to Fig. 7, that is: in controller 17, be provided with a test function, when debugging, at first enter " test " function, controller 17 is finished the detection of each magneto sensor 16 check point static magnetic field signal value automatically, and deposits in the storer of controller 17; Operation is made zero then, on set-up function, set the changes of magnetic field sensing range again, changes of magnetic field sensing range setting value is positive and negative change absolute value, thereby finish the setting that magneto sensor (Hall element) 16 detects action sensitivity, solved the consistent difficult problem of the magneto sensor of each check point (Hall element) 16 static magnetic field signals adjustment in the practical operation, thereby it is relative with debugging next than being easier to make magneto sensor (Hall element) 16 install.
The course of work that the method that constant magnetic deironing device of the present invention adopts the magneto sensor group to detect ironware is applied to deironing apparatus is: fortune has non-magnetic material 10 on the equipment of conveyer 5, when being mixed with assorted ironware 9 in the non-magnetic material of transportation, non-magnetic material 10 will be equipped with permanent magnet 6 belows of the belt constant magnetic deironing device 2 of band magnetic field detection with the travelling belt traffic direction with being mixed with assorted ironware 9 by equipment of conveyer 5 tops.The assorted ironware 9 of magnetic conduction is upwards picked up by permanent magnet 6, leaves belt conveyer 5 and non-magnetic material 10, arrives the surface of iron removing belt 7.Under the magnetic field force effect of permanent magnet 6, ironware 9 makes the surface of iron removing belt 7 be close to permanent magnet 6, because ironware 9 is adsorbed on the magnetic surface of permanent magnet 6, the static magnetic field that has changed permanent magnet 6 distributes, the magneto sensor 16 of detector for magnetic field detects the change voltage signal of back output of magnetic field and also changes thereupon, output voltage signal after this changes is sent into comparison control circuit 20 through amplifying circuit 18 amplifications, A/D change-over circuit 19 after being converted to digital signal, be microprocessor, compare computing.Comparison operation result's variable quantity exceeds the scope of original setting, microprocessor has sent iron absorption signal, connect iron removing belt operation power supply, make iron removing belt 7 rotations, iron removing belt 7 bands that the assorted ironware 9 that is picked up by permanent magnet 6 magnetic fields is not stopped to rotate are from the magnetic force district of permanent magnet 6, what arrive no magnetic abandons iron charge bucket 4 tops, and assorted ironware 9 losss of excitation are fallen under the effect of gravity and abandoned in the iron charge bucket 4, finishes in non-magnetic material 10 work except that impurity elimination ironware 9.When no longer accompanying assorted ironware 9 in the non-magnetic material 10, the magneto sensor 16 no signal variable quantities of detector for magnetic field send, working condition when permanent magnet 6 recovers static magnetic field, microprocessor stops to have sent metal signal, thereby disconnect iron removing belt operation power supply, stop iron removing belt 7 operations, wait for the signal that permanent next time magnet 6 has iron 9 absorption to send again, repeat above-mentioned iron removal.
The present invention has the belt constant magnetic deironing device of magnetic field detection, does not need to install metal detector, and the magnetic field detection parts that had by tramp iron separator detect voluntarily and have or not metal to be picked up, and detects the ironware method and is easier to, and device constitutes simple.Iron removing belt does not need the long-time continuous running, just just carries out the running of short time when having ironware to be picked up, thus saves energy, and mechanical loss is little, can prolong the serviceable life of tramp iron separator.
More than by preferred embodiment the specific embodiment of the present invention has been described; but it should be understood that; here concrete description should not be construed as the qualification to the spirit and scope of the invention; the various modifications that the one of ordinary skilled in the art makes the foregoing description after reading this instructions, the scope that all belongs to the present invention and protected.
Claims (4)
1. a constant magnetic deironing device adopts the magneto sensor group to detect the method for ironware, it is characterized in that: between the magnetic pole of the permanent magnet of constant magnetic deironing device, some magneto sensors are housed, magneto sensor output connects signal amplification circuit, signal amplification circuit connects comparison control circuit, and output connects the rotation of iron removing belt operation power supply control iron removing belt after the comparison control circuit computing.
2. constant magnetic deironing device according to claim 1 adopts the magneto sensor group to detect the method for ironware, it is characterized in that: a plurality of testing circuit control relation of some magneto sensor compositions are or logic control.
3. constant magnetic deironing device according to claim 1 and 2 adopts the magneto sensor group to detect the method for ironware, and it is characterized in that: magneto sensor is the hall sensing device.
4. constant magnetic deironing device according to claim 1 adopts the magneto sensor group to detect the method for ironware, it is characterized in that: the control method of magneto sensor is, at first enter test phase, controller is finished the detection of each magneto sensor check point static magnetic field signal value automatically, and deposits in the storer of controller; Operation is made zero then, sets magneto sensor changes of magnetic field sensing range again, and changes of magnetic field sensing range setting value is positive and negative change absolute value, thereby sets the detection action sensitivity of magneto sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200710036862XA CN101231263A (en) | 2007-01-26 | 2007-01-26 | Method for detecting iron member using magnetosensitive element by constant magnetic deironing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200710036862XA CN101231263A (en) | 2007-01-26 | 2007-01-26 | Method for detecting iron member using magnetosensitive element by constant magnetic deironing device |
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| CN101231263A true CN101231263A (en) | 2008-07-30 |
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| CNA200710036862XA Pending CN101231263A (en) | 2007-01-26 | 2007-01-26 | Method for detecting iron member using magnetosensitive element by constant magnetic deironing device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101846652B (en) * | 2009-03-25 | 2012-07-04 | 宝山钢铁股份有限公司 | Detecting device and method for front iron part of belt-type constant magnetic iron remover |
| CN104941794A (en) * | 2015-06-30 | 2015-09-30 | 中国神华能源股份有限公司 | Iron removal device with automatic iron unloading function |
| CN106040426A (en) * | 2016-06-08 | 2016-10-26 | 镇江电磁设备厂有限责任公司 | Continuous constant magnetic iron remover |
| CN109013055A (en) * | 2018-09-29 | 2018-12-18 | 辽宁科技大学 | Dry-type magnetic extractor and its method for separating is sucked in a kind of crawler belt ore discharge |
| CN110860373A (en) * | 2019-11-05 | 2020-03-06 | 江苏大学 | Magnetic separation device for solid ferromagnetic waste |
| CN111111908A (en) * | 2019-12-02 | 2020-05-08 | 宁波西磁磁业发展股份有限公司 | Magnetic plate compensation type belt iron removing machine |
| CN111111909A (en) * | 2020-02-08 | 2020-05-08 | 青岛大学 | Bulk ferromagnetic impurity removing device |
-
2007
- 2007-01-26 CN CNA200710036862XA patent/CN101231263A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101846652B (en) * | 2009-03-25 | 2012-07-04 | 宝山钢铁股份有限公司 | Detecting device and method for front iron part of belt-type constant magnetic iron remover |
| CN104941794A (en) * | 2015-06-30 | 2015-09-30 | 中国神华能源股份有限公司 | Iron removal device with automatic iron unloading function |
| CN106040426A (en) * | 2016-06-08 | 2016-10-26 | 镇江电磁设备厂有限责任公司 | Continuous constant magnetic iron remover |
| CN109013055A (en) * | 2018-09-29 | 2018-12-18 | 辽宁科技大学 | Dry-type magnetic extractor and its method for separating is sucked in a kind of crawler belt ore discharge |
| CN110860373A (en) * | 2019-11-05 | 2020-03-06 | 江苏大学 | Magnetic separation device for solid ferromagnetic waste |
| CN111111908A (en) * | 2019-12-02 | 2020-05-08 | 宁波西磁磁业发展股份有限公司 | Magnetic plate compensation type belt iron removing machine |
| CN111111909A (en) * | 2020-02-08 | 2020-05-08 | 青岛大学 | Bulk ferromagnetic impurity removing device |
| CN111111909B (en) * | 2020-02-08 | 2021-10-15 | 青岛大学 | Bulk ferromagnetic impurity removing device |
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Application publication date: 20080730 |