CN103645122B - Online ferromagnetic microparticles detection system - Google Patents
Online ferromagnetic microparticles detection system Download PDFInfo
- Publication number
- CN103645122B CN103645122B CN201310544555.8A CN201310544555A CN103645122B CN 103645122 B CN103645122 B CN 103645122B CN 201310544555 A CN201310544555 A CN 201310544555A CN 103645122 B CN103645122 B CN 103645122B
- Authority
- CN
- China
- Prior art keywords
- rotary
- tray
- infrared eye
- powder
- eddy current
- 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.)
- Expired - Fee Related
Links
Abstract
A kind of online ferromagnetic microparticles detection system, comprises eddy current coil (1), detects infrared eye (2), reference infrared eye (3), rotary-tray (4), rotary-tray drive motor (5), at the uniform velocity pushing screw rod (9), the parts such as drive screw servomotor (11).Eddy current coil (1) is arranged in opposite directions with infrared eye (2) is coaxial, and rotary-tray (4) is arranged on eddy current coil (1) and infrared eye (between 2.Alternating magnetic field is produced when eddy current coil (1) energising work, in Rotary tray (4), microparticle Fe is in the magnetic field that vary, ferromagnetism microparticle Fe is due to electromagnetic induction effect, ferromagnetism microparticle Fe can produce induction electromotive force, there is resistance in ferromagnetism microparticle Fe self, so eddy current will produce heat and temperature rise in ferromagnetism microparticle Fe, its infrared signal is obtained, by the uniform velocity pushing screw rod (9) and continuous transmission of rotary-tray (4) realize on-line checkingi by detection infrared eye (2).
Description
Technical field
The present invention relates to a kind of ferromagnetic particle detection technique, particularly online ferromagnetic microparticles detection system.
Background technology
The ferromagnetic particle of food, drug production process pollutes the attention, particularly some intravenous injection powder-injection that more and more cause people, once be polluted by the ferromagnetic particle that pharmaceutical equipment produces in pharmaceutical technology process, its harm is very serious.
Along with the development of nanometer technique, the widespread use of powder body material, the impact of ferromagnetic particle highlights in a lot of fields, and the field that ferromagnetic particle detects is more and more extensive, e.g., the LiFePO4 (LiFePO of new energy field
4) building-up process in, fe in reducing atmosphere, as CO, H
2etc. under atmosphere, at 500 DEG C ~ 700 DEG C through Fe
3+reduction and generate [SalahAA, MaugerA, ZaghibK, etal..ReductionFe
3+ofimpuritiesinLiFePO
4frompyrolysisoforganicprecursorusedforcarbondeposition [J] .JournalofElectrochemicalSociety, 2006,153 (9): A1692-A17011], these ferromagnetic particles are being mingled in lithium ion battery, the pollution of trace likely causes internal short-circuit, forms serious hazardous accidents, even also can produce harmful effect to lithium ion battery quality, document is recorded, and Ferromagnetic Impurities amount of substance content is the LiFePO of 1.63%
4the battery made, self-discharge rate is about the LiFePO that Ferromagnetic Impurities content is 0.04%
4the battery made 5.6 times [Yang Xu come, Liu Chengshi, Xie Jia, etc. LiFePO4 magnetic impurity is on the impact [J] of self-discharge of battery. battery, 2012,42 (6): 314-317].Although ferromagnetic particle pollutes can with sampled form, to be detected by instruments such as X-ray diffractometers (XRD), impracticable lower than the ferromagnetic of 1mg/kg and Ferrimagnetic nano particle XRD instrument.Used superconducting quantum interference device (SQUID) (SQUID) that the ferromagnetic and Ferrimagnetic nano particle that in sample, the instrument such as XRD can't detect can be detected in recent years, wherein magnetic particle diameter can lower than 100 μm of [TanakaS, AkaiT, HatsukadeY, etal..HighTcSQUIDDetectionSystemforMetallicContaminantin LithiumIonBattery [J] .IEEETransactionsonMagnetics, 2009,45 (10): 4510-4513.].Although SQUID is used widely, but YBCO Bicrystal grain boundary junction and step edge Grain-boundary Junctions are at the unsatisfactory [Gao Ji of high temperature superconducting josephson junction controllability, Ma Ping, wear the Far East. the Josephson junction [J] in high temperature superconducting quantum interfering device. physics, 2007,36 (11): 869-878.].
Superconducting quantum interference device (SQUID) needs strict shield technology, maskless SQUID is easy to the impact changed by environmental magnetic field (as the instrument of civil power, work and the locomotive etc. of motion), undesired signal is the several order of magnitude larger than measured signal sometimes, therefore there will be sign mutation during system works, can lock-out state be lost time serious, can not work.
No matter be food or medicine, or the industrial powder manufacture of materials industry of other industry, detect ferromagnetic particle with existing sampling and pollute, the ferromagnetic particle being difficult to eliminate bulk article pollutes.Further, the material no matter adopting X-ray diffractometer or adopt superconducting quantum interference device (SQUID) all cannot realize completing online continuously large discharge detects.
Summary of the invention
The object of the invention is to overcome the powder material ferromagnetic particle detection shortcoming that prior art cannot realize continuously online large discharge, propose a kind of online ferromagnetic microparticles detection system.
The present invention can be used for ferromagnetic microparticles in large discharge power production and detects.
Principle of the present invention is: according to Faraday's electromagnetic induction law, produces alternating magnetic field during eddy current coil energising work.There is electromagnetic induction effect in ferromagnetism microparticle, ferromagnetism microparticle is placed in induction electromotive force region, and will form induction current in ferromagnetism microparticle, this induction current belongs to eddy current character.Because ferromagnetism microparticle self exists resistance, so eddy current will produce heat and temperature rise in ferromagnetism microparticle.Eddy current coil energising operating power is larger, and will produce heat in ferromagnetism microparticle will be larger, and temperature rise will be higher.The temperature rise of ferromagnetism microparticle is higher, and infrared energy will be larger.Infrared eye and eddy current coil are coaxially arranged in opposite directions, namely the infrared radiation being in the ferromagnetism microparticle between eddy current coil and infrared eye is detected by infrared eye.
Technical scheme of the present invention is as follows:
The present invention is made up of Zou Liao mechanism and detection system, the motor seat board composition of rotary-tray drive motor by drive screw servomotor, at the uniform velocity pushing screw rod, rotary-tray drive motor, rotary-tray, pallet cover, discharging tapered tube, feed pipe, for material barrel, execute material scraper Taper Pipe, and is installed by described Zou Liao mechanism.Pallet cover is installed on above rotary-tray.Rotary-tray drive motor drives rotary-tray to rotate, and by the driving of rotary-tray drive motor, makes the powder that rotary-tray carries deliver to surveyed area continuously.The motor seat board installing rotary-tray drive motor is positioned at below rotary-tray.Discharging tapered tube is arranged on described motor seat board.Rotary-tray has discharging opening, and discharging opening and discharging tapered tube are by the open communication on motor seat board.
Executing material scraper Taper Pipe is installed in pallet cover, for charity powder.The one end of executing material scraper Taper Pipe connects feed pipe, is provided with at the uniform velocity pushing screw rod in the feed pipe of the other end of feed pipe, at the uniform velocity the axle head of pushing screw rod and drive screw servomotor shaft coupling; Feed pipe is mutually vertical with for material barrel and be communicated with.During the work of drive screw servomotor, at the uniform velocity pushing screw rod in the future confession material barrel need the powder that detects at the uniform velocity cloth impose on rotary-tray.
The axle of rotary-tray drive motor penetrates rotary-tray circle center hole and fixing and locking, and driven rotary pallet rotates.
By executing, described material scraper Taper Pipe of executing expects that cover mouth and backgauge arc form.Execute and expect that one end that scraper Taper Pipe is connected with feed pipe is straight tube, the other end is that flaring executing expects cover mouth, and under executing the radial rear side of material cover mouth, edge is provided with backgauge arc.
Described detection system forms by detecting infrared eye, reference infrared eye and eddy current coil.On pallet cover above the rotary-tray that described detection infrared eye and reference infrared eye are installed on Zou Liao mechanism, detect infrared eye and reference infrared eye exists together on same donut, angle is 120 ° between the two.Eddy current coil is arranged on the motor seat board below rotary-tray, in opposite directions coaxial with detection infrared eye.
In described detection system, described eddy current coil by cylindrical ferrite, and cylindrical ferrite face of cylinder radial loop around wire form.The axis of eddy current coil is arranged in opposite directions with detection infrared eye detection window, and eddy current coil and the region detected between infrared eye detection window are surveyed area.
Described detection window is positioned at the lower axial end of infrared eye.
The rotary-tray of described Zou Liao mechanism is between the eddy current coil and the detection window detecting infrared eye of detection system.
The distributing position of the powder on rotary-tray is controlled by the material scraper Taper Pipe of executing of charity powder.The material scraper Taper Pipe of executing of charity powder is installed in pallet cover, be positioned at 120 ° of angular position places with the donut detecting infrared eye installation site, the powder executing the charity of material scraper Taper Pipe is distributed in executes material scraper Taper Pipe and the concentric annular regions detecting infrared eye.
The need be distributed on rotary-tray detect powder, and order enters reference infrared eye detection window and detects infrared eye detection window.The electromagnetic induction region detecting infrared eye detection window and eddy current coil is the same area.By rotary-tray continuous rotation, powder need be detected and be namely essentially continuously.
When rotary-tray rotates, namely the powder being distributed in the need detection on rotary-tray is delivered to surveyed area continuously.
Along with the continuation of rotary-tray rotates, namely the powder completing detection is installed in the backgauge arc executing lower edge on rear side of material scraper Taper Pipe radial direction and scrapes gear, powder, by the discharge hole for discharge of rotary-tray, flows into complementary tank through the discharging cone-shaped tube be arranged on motor seat board and collects.
Rotary-tray rotate to rotary-tray discharging opening with execute expect that scraper Taper Pipe is coaxial time, at the uniform velocity pushing screw rod must be avoided to advance the powder that need detect directly to enter complementary tank by the discharging opening of rotary-tray.The discharging opening of rotary-tray with execute expect that scraper Taper Pipe is coaxial time, namely control drive screw servomotor to suspend, drive screw servomotor suspends, at the uniform velocity namely pushing screw rod suspends pusher, suspend and execute material scraper Taper Pipe charity powder, also just reach and avoid at the uniform velocity pushing screw rod to advance the powder that need detect directly to be entered the object of complementary tank by the discharging opening of rotary-tray.Often rotate a circle according to rotary-tray drive motor, the discharging opening of rotary-tray expects that scraper Taper Pipe is once coaxial with executing, and the periodic frequency setting disk-drive motor that asks often rotates a circle according to this, and drive screw servomotor suspends.
Under the driving of rotary-tray drive motor, the discharging opening of rotary-tray produces and executes the coaxial position of expecting scraper Taper Pipe, drive screw servomotor is resumed work, at the uniform velocity pushing screw rod is recovered to advance the powder that need detect, execute and expect that scraper Taper Pipe continues to revolve charity to rotary-tray and need detect powder, so circulation reaches the object of on-line checkingi.
Reference infrared eye installation site belongs to the induction areas of non-eddy current coil, for detecting the powder of the induction areas of non-eddy current coil, no matter the signal that reference infrared eye obtains is the contrast signal all belonging to the vortex induction of same feature containing ferromagnetic particle powder and the powder not containing ferromagnetic particle.
Detect the induction areas that infrared eye installation site belongs to eddy current coil, detect the induction areas powder that infrared eye detects eddy current coil, if detected powder is containing ferromagnetic particle, this ferromagnetic particle forms rapidly eddy current and temperature rise, detects infrared eye and namely obtains temperature-rise effect infrared spectroscopy signals.
If detected powder is not containing ferromagnetic particle, just without eddy effect without temperature rise, namely acquisition is without eddy effect, without the infrared spectroscopy signals of temperature rise.
Containing ferromagnetic particle powder and the powder infrared signal not containing ferromagnetic particle, by the pre-amplification circuit process that infrared eye is special, exported by signal processing single chip.
The present invention is that the suitability for industrialized production of micro-nano powder technology provides a kind of practical detection technique improving product quality.
Accompanying drawing explanation
Fig. 1 is the present invention's online ferromagnetic microparticles detection system schematic diagram,
In figure, 1 eddy current coil, 2 detect infrared eye, 4 rotary-trays, Fe powder;
Fig. 2 is the eddy current coil of the online ferromagnetic microparticles detection system of the present invention,
In figure, 1-1 ferrite, 1-2 is around wire;
Fig. 3 is the present invention's online ferromagnetic microparticles detection system theory diagram,
In figure, being the online ferromagnetic microparticles detection system of the present invention in doublet frame, is signal processing system in single dotted line frame;
Fig. 4 is the present invention's online ferromagnetic microparticles detection system configuration diagram,
In figure, 1 eddy current coil, 2 detect infrared eye, 3 reference infrared eyes, 4 rotary-trays, 4-1 discharging opening, 5 rotary-tray drive motor, 6 pallet covers, 7 discharging cone-shaped tubes, 8 feed pipes, 9 at the uniform velocity pushing screw rod, 10 for material barrels, 11 drive screw servomotors, 12 execute material scraper Taper Pipe, 13 motor seat boards;
Fig. 5 is the vertical view of Fig. 4,
In figure, 2 detect infrared eye, 3 reference infrared eyes, 6 pallet covers, 8 feed pipes, and 10 for material barrel, 11 drive screw servomotors;
Fig. 6 is the upward view of Fig. 4,
In figure, 1 eddy current coil, 4 rotary-trays, 5 rotary-tray drive motor, 6 pallet covers, 7 discharging cone-shaped tubes, 8 feed pipes, 10 for material barrel, 11 drive screw servomotors, 13 motor seat boards;
Fig. 7 12 executes material scraper conical tube structure schematic diagram,
In figure, 12-1 backgauge arc, 12-2 executes material cover mouth;
Fig. 8 is the vertical view of Fig. 7,
In figure, 12-1 backgauge arc, 12-2 executes material cover mouth;
Fig. 9 is Rotary tray diagram,
In figure, 5 rotary-tray drive motor, 4 rotary-trays, 7 discharging cone-shaped tubes, 4-1 discharging opening, 13 motor seat boards;
Figure 10 12 executes material scraper Taper Pipe and 4 rotary-tray scheme of installations;
In figure, 5 rotary-tray drive motor, 4 rotary-trays, 7 discharging cone-shaped tubes, 12 execute material scraper Taper Pipe, 13 motor seat boards.
Embodiment
The present invention is further illustrated below in conjunction with the drawings and specific embodiments
The present invention is made up of Zou Liao mechanism and detection system.
Described Zou Liao mechanism is by drive screw servomotor 11, at the uniform velocity pushing screw rod 9, rotary-tray drive motor 5, rotary-tray 4, pallet cover 6, discharging tapered tube 7, feed pipe 8, for material barrel 10, execute material scraper Taper Pipe 12, and the motor seat board 13 installing rotary-tray drive motor 5 forms.
Described executing expects that one end that scraper Taper Pipe 12 connects feed pipe 8 is straight tube, and the other end is that flaring executing expects cover mouth 12-2, and under executing the radial rear side of material cover mouth 12-2, edge is provided with backgauge arc 12-1.
Described pallet cover 6 is installed on the top of rotary-tray 4.Rotary-tray drive motor 5 drives rotary-tray 4 to rotate, and by the driving effect of rotary-tray drive motor 5, makes the powder of carrying on rotary-tray 4 deliver to surveyed area continuously.The motor seat board 13 installing rotary-tray drive motor 5 is positioned at the below of rotary-tray 4.Discharging tapered tube 7 is arranged on described motor seat board 13.Rotary-tray 4 has discharging opening 4-1, discharging opening 4-1 and discharging tapered tube 7 are by the open communication on motor seat board 13.
Executing material scraper Taper Pipe 12 is installed in pallet cover 6, for charity powder.The one end of executing material scraper Taper Pipe 12 connects feed pipe 8, is provided with at the uniform velocity pushing screw rod 9 in the pipe of feed pipe 8 other end, at the uniform velocity the axle head of pushing screw rod 9 and drive screw servomotor 11 shaft coupling; Feed pipe 8 is mutually vertical with for material barrel 10 and be communicated with.When drive screw servomotor 11 works, at the uniform velocity pushing screw rod 9 in the future confession material barrel 10 need detect powder at the uniform velocity cloth impose on rotary-tray 4.
The axle of rotary-tray drive motor 5 penetrates the circle center hole of rotary-tray 4 and fixing and locking, and driven rotary pallet 4 rotates.
Described detection system forms by detecting infrared eye 2, reference infrared eye 3 and eddy current coil 1.
Detection infrared eye 2 and reference infrared eye 3 are installed on the pallet cover 6 of Zou Liao mechanism, and detection infrared eye 2 and reference infrared eye 3 are on same donut, and angle is between the two 120 °.Eddy current coil 1 is installed on the motor seat board 13 below rotary-tray 4, and it is coaxial in opposite directions to detect infrared eye 2.
The rotary-tray 4 of described Zou Liao mechanism is at eddy current coil 1 and detect between infrared eye 2 detection window.
The distributing position of the powder on rotary-tray 4 is controlled by the material scraper Taper Pipe 12 of executing of charity powder.The material scraper Taper Pipe 12 of executing of charity powder is installed in pallet cover 6, be positioned at 120 ° of angular position places with the donut detecting infrared eye 2 installation site, the powder executing the charity of material scraper Taper Pipe 12 is distributed in the concentric annular regions of executing material scraper Taper Pipe 12 and detecting between infrared eye.
The installation site of the reference infrared eye 3 of described testing agency with detect infrared eye 2 on the donut of 120 ° of angles, for obtaining not by the reference infrared signal of eddy current coil 1 electromagnetic induction.
As shown in Figure 3, reference infrared eye 3 detection zone is ferromagnetic particle A district, and detecting detection zone between infrared eye 2 detection window with coaxial eddy current coil in opposite directions 1 is ferromagnetism microparticle B district.
Need on rotary-tray 4 detect the detection zone that powder is distributed in reference infrared eye 3 detection window and detects infrared eye 2 detection window, reference infrared eye 3 detection window is donut 120 ° of angles with the relative position of detection infrared eye 2 detection window, and the detection window and the eddy current coil 1 that detect infrared eye 2 are axial in opposite directions.By rotary-tray 4 continuous rotation, the powder that need detect is after reference infrared eye 3 detection window detects, and rotary-tray 4 continues rotation 120 ° and namely enters the axial detection infrared eye 2 detection window detection zone in opposite directions with eddy current coil 1.
Along with the continuation of rotary-tray 4 rotates, namely the powder completing detection is installed in the backgauge arc 12-1 executing the lower edge of the radial rear side of material scraper Taper Pipe 12 and scrapes gear, expect that scraper Taper Pipe 12 rotary-tray 4 donut district is in opposite directions provided with discharging opening 4-1 with executing, the powder of gear is scraped by backgauge arc 12-1, by discharging opening 4-1 discharging, flow into complementary tank through the discharging tapered tube 7 be arranged on motor seat board 13, collected by complementary tank.
Rotary-tray 4 rotate to discharging opening 4-1 with execute expect that scraper Taper Pipe 12 exports coaxial position time, in order to obtain not by eddy current coil 1 electromagnetic induction reference infrared signal, pallet cover 6 is provided with reference infrared eye 3, the installation site of reference infrared eye 3 with detect on the donut of infrared eye 120 ° of angles.
As shown in Figure 3, reference infrared eye 3 detection zone is ferromagnetism microparticle A district, and detecting detection zone between infrared eye 2 with coaxial eddy current coil in opposite directions 1 is ferromagnetism microparticle B district.
The need be distributed on rotary-tray 6 detect powder, and order enters reference infrared eye 3 detection window and detects the surveyed area of infrared eye 2 detection window.Reference infrared eye 3 detection window and the relative position detecting infrared eye 2 detection window are 120 ° of angles of donut, and eddy current coil 1 is axially opposite in and detects infrared eye 2 detection window.By rotary-tray 6 continuous rotation, need detect powder after reference infrared eye 3 detection window detects, rotary-tray 6 continues the surveyed area that rotation 120 ° enters axial detection infrared eye 2 detection window in opposite directions with eddy current coil 1 again.
The material scraper Taper Pipe 12 of executing being connected to feed pipe 8 one end is installed in pallet cover 6, at the uniform velocity pushing screw rod 9 is installed in the other end of feed pipe 8, the at the uniform velocity axle head of pushing screw rod 9 and drive screw servomotor 11 shaft coupling, feed pipe 8 and for material barrel 10 vertical also UNICOM mutually.When drive screw servomotor 11 works, at the uniform velocity the need of pushing screw rod 9 in the future confession material barrel 10 detect powder at the uniform velocity cloth impose on rotary-tray 4.
The axle of rotary-tray drive motor 5 penetrates the circle center hole of rotary-tray 4 and fixing and locking, and driven rotary pallet rotates.
When rotary-tray 4 rotates, namely the powder being distributed in the need detection on rotary-tray 4 is delivered to detection zone continuously.
Along with the continuation of rotary-tray 4 rotates, namely the powder completing detection is installed in the backgauge arc 12-1 executing the radial rear side of material scraper Taper Pipe 12 and scrapes gear, powder, by the discharging opening 4-1 discharging of rotary-tray 4, flows into complementary tank through the discharging cone-shaped tube 7 be arranged on motor seat board 13 and collects.
Rotary-tray 4 rotate to rotary-tray rotate 4 discharging opening 4-1 with execute expect that scraper Taper Pipe 12 is coaxial time, at the uniform velocity pushing screw rod 9 must be avoided to advance the powder that need detect directly to enter complementary tank by the discharging opening 4-1 of rotary-tray 4.The discharging opening of rotary-tray 4 with execute expect that scraper Taper Pipe exports coaxial time, namely control drive screw servomotor 11 to suspend, drive screw servomotor 11 suspends, at the uniform velocity namely pushing screw rod 9 suspends pusher, suspend and execute material scraper Taper Pipe 12 charity powder, also just reach and avoid at the uniform velocity pushing screw rod 9 to advance the powder that need detect directly to be entered the object of complementary tank by the discharging opening 4-1 of rotary-tray 4.Often rotate a circle according to rotary-tray drive motor 5, the discharging opening 4-1 of rotary-tray 4 with execute that to expect that scraper Taper Pipe 12 exports once coaxial, the periodic frequency setting disk-drive motor 5 that asks often rotates a circle according to this, and drive screw servomotor 11 suspends.Drive screw servomotor 11 suspends, and at the uniform velocity namely pushing screw rod 9 suspends pusher, executes material scraper Taper Pipe 12 charity powder and suspends, avoid at the uniform velocity pushing screw rod 9 to advance the powder that need detect directly to enter complementary tank by the discharging opening 4-1 of rotary-tray 4.
Under the rotary actuation of rotary-tray drive motor 5, the discharging opening 4-1 of rotary-tray 4 produces and expects scraper Taper Pipe 12 coaxial position with executing, drive screw servomotor 11 is resumed work, at the uniform velocity pushing screw rod 9 is recovered to advance the powder that need detect, execute and expect that scraper Taper Pipe 12 continues to revolve charity to rotary-tray 4 and need detect powder, so circulation reaches the object of on-line checkingi.
In described detection system, described eddy current coil 1 by cylindrical ferrite 1-1, form around column type ferrite cylinder face diameter guiding line 1-2, the axis of eddy current coil 1 and detect infrared eye detect 2 windows in opposite directions between be surveyed area.
As shown in Figure 1, rotary-tray 4 is provided with between eddy current coil 1 and detection infrared eye 2, eddy current coil 1 and detect that infrared eye 2 is coaxial arranges in opposite directions, detecting infrared eye 2 is installed on the pallet cover 6 above rotary-tray 4, eddy current coil 1 is installed on the motor seat board 13 below rotary-tray 4, produce alternating magnetic field when eddy current coil 1 is energized, in rotary-tray 4, ferromagnetic particle Fe is in the magnetic field that vary.Due to the electromagnetic induction effect of ferromagnetic particle Fe, ferromagnetic particle Fe can produce induction electromotive force.And because ferromagnetic particle Fe self exists resistance, so eddy current produces heat at ferromagnetic particle Fe and makes ferromagnetic particle Fe temperature rise.
Eddy current coil 1 energized power is larger, and the heat that ferromagnetic particle Fe produces will be larger, and temperature rise will be higher.Ferromagnetic particle Fe temperature rise is higher, and infrared energy will be larger.Now, ferromagnetic particle Fe infrared radiation i.e. detected infrared eye 2 detects.
As shown in Figure 2, described eddy current coil 1 is made up of around the cylinder of cylindrical ferrite 1-1 wire 1-2.
Figure 3 shows that the present invention's online ferromagnetic microparticles detection system principle of work.
As shown in Figure 3, at the uniform velocity powder Fe is delivered to rotary-tray 4 by pushing screw rod 9, first ferromagnetism microparticle A district is arrived, powder Fe is in non-eddy current coil 1 surveyed area in A district, now reference infrared eye 3 obtains the signal that infrared spectroscopy signals belongs to influence electricity kinetic potential, along with rotary-tray drive motor 5 drives rotary-tray 4 to rotate, powder Fe arrives ferromagnetism microparticle B district, powder Fe be in ferromagnetism microparticle B district eddy current coil 1 be energized work time the alternating magnetic field district that produces, containing the effect of ferromagnetic microparticles powder Fe electromagnetic induction, namely induction electromotive force is produced containing ferromagnetic microparticles powder Fe, due to containing the effect of ferromagnetic microparticles powder Fe self-resistance, eddy current will produce heat and temperature rise in containing ferromagnetic particle powder Fe, namely the infrared spectroscopy signals that temperature containing ferromagnetic particle powder Fe raises is detected by infrared eye 2.
The signal detecting the infrared spectrum that infrared eye 2 and reference infrared eye 3 detect is sent to prime amplifier, and prime amplifier amplifier respectively amplification detection infrared eye 2 detects powder Fe and obtains and respond to the temperature rise infrared spectroscopy signals of action of alternating magnetic field and reference infrared eye 3 containing ferromagnetic particle powder Fe and detect and obtain the non-inductive alternating magnetic field of powder Fe without ferromagnetic particle powder Fe without temperature rise infrared spectroscopy signals.
When detection infrared eye 2 is identical with the infrared spectrum that reference infrared eye 3 obtains, illustrate that detected powder Fe is without ferromagnetic particle.
When detection infrared eye 2 and reference infrared eye 3, to obtain infrared spectrum different, and detect infrared eye 2 and obtain infrared spectroscopy signals infrared radiation colour temperature and significantly increase, and namely determine the existence of detected powder Fe ferromagnetic particle.
When in the powder Fe that at the uniform velocity pushing screw rod 9 is carried, during without ferromagnetic particle, detect infrared eye 2 identical with the infrared spectroscopy signals that reference infrared eye 3 obtains, namely do not occur the temperature rise infrared spectroscopy signals that induction alternating magnetic field causes.
When in the powder Fe that at the uniform velocity pushing screw rod 9 is carried, during containing ferromagnetic particle, namely there is colour temperature difference in the infrared spectroscopy signals detecting infrared eye 2 and reference infrared eye 3 acquisition, the temperature rise infrared spectroscopy signals that induction alternating magnetic field causes is detected infrared eye 2 and obtains.
As shown in Fig. 4, Fig. 5, Fig. 6, eddy current coil 1 is installed on motor seat board 13, detects infrared eye 2 and is installed on pallet cover 6, arrange in opposite directions with eddy current coil 1 is coaxial.
In order to ensure that detected powder Fe distributing position is in detected detecting area, reference infrared eye 3 is installed on pallet cover 6 and the 120 ° of angular position places detecting infrared eye 2 donut, the discharging port of feed pipe 8 is installed on pallet cover 6 and the 120 ° of angular position places detecting infrared eye 2 donut, makes the detected powder Fe executing the charity of material scraper Taper Pipe 12 be distributed in reference infrared eye 3, detect the concentric circular tracks region of infrared eye 2 and eddy current coil 1 formation.
The two ends of feed pipe 8 are installed respectively and are executed material scraper Taper Pipe 12 and at the uniform velocity pushing screw rod 9; Described material scraper Taper Pipe 12 of executing is installed in pallet cover 6; At the uniform velocity pushing screw rod 9 is arranged in feed pipe 8 manages, at the uniform velocity pushing screw rod 9 and drive screw servomotor 11 shaft coupling; Feed pipe 8 footpath is installed on upward and be communicated with for material barrel 10.
Eddy current coil 1, discharging cone-shaped tube 7, rotary-tray drive motor 5 are installed on motor seat board 13 one side down respectively.
Rotary-tray 4, between the eddy current coil 1 and the detection window detecting infrared eye 2 of detection system, is placed in the cover of pallet cover 6.The axle of rotary-tray drive motor 5 penetrates the circle center hole of rotary-tray 4 and fixing and locking.
The course of work of the present invention's online ferromagnetic microparticles detection system is as follows: as shown in Figure 4, needs being detected powder Fe contains into supplying material barrel 10, open drive screw servomotor 11, at the uniform velocity pushing screw rod 9 rotation forces powder, powder falls into rotary-tray 4 through feed pipe 8 from executing material scraper Taper Pipe 12.
Rotary-tray drive motor 5 rotates, and by the powder Fe rotational displacement that falls into rotary-tray 4 to the vertically coaxial position of reference infrared eye 3, reference infrared eye 3 obtains the infrared spectroscopy signals of the powder Fe at rotary-tray 4.
Rotary-tray drive motor 5 continues to rotate, by the powder Fe rotational displacement of rotary-tray 4 to eddy current coil 1 and the detection vertical coaxial position of infrared eye 2.
The alternating magnetic field of eddy current coil 1 makes the ferromagnetic particle contained in the powder Fe be detected produce electromagnetic induction, and ferromagnetic particle produces induction electromotive force.Again because ferromagnetic particle self exists resistance, so eddy current temperature rise at ferromagnetic particle generation heat.Eddy current coil 1 energized power is larger, and ferromagnetic particle produces heat will be larger, and temperature rise will be higher, and infrared spectrum colour temperature will be high.The infrared radiating light spectrum signal i.e. detected infrared eye 2 that ferromagnetic particle produces heat detects.
As Fig. 4, rotary-tray drive motor 5 drives rotary-tray 4 continuous rotation, makes powder Fe from the discharging opening 4-1 discharging of rotary-tray 4, is collected from discharging cone-shaped tube 7 discharging of discharging through being arranged on motor seat board 13 of the discharging opening 4-1 of rotary-tray 4.
As shown in Fig. 7, Fig. 8, described material scraper Taper Pipe 12 of executing forms by executing material cover mouth 12-2 and backgauge arc 12-1.The one end of executing material scraper Taper Pipe 12 is connected with feed pipe 8, and the one end be connected with feed pipe 8 is straight tube, and the other end is that flaring executing expects cover mouth 12-2, and the lower edge of radial rear side of executing material cover mouth 12-2 is provided with backgauge arc 12-1.The charging of feed pipe 8 expects cover mouth 12-2 charity through executing executing of material scraper Taper Pipe 12.Along with the rotation of rotary-tray 4, the powder Fe after testing rotates to backgauge arc 12-1 scraper district, is namely scraped gear by backgauge arc 12-1.
As shown in Fig. 9, Figure 10, scraped discharging cone-shaped tube 7 discharging of powder Fe through motor seat board 13 of gear.
After powder on rotary-tray 4 is struck off, continue to rotate under rotary-tray drive motor 5 drives, go to execute expect scraper Taper Pipe 12 vertical coaxial time, by executing, namely the powder Fe to be detected from feed pipe 8 expect that the charity of scraper Taper Pipe 12 is on rotary-tray 4, under rotary-tray drive motor 5 drives, successively enter ferromagnetism microparticle A district, reference infrared eye 3 detection zone, detect ferromagnetism microparticle B district, infrared eye 2 detection zone.Continuous working like this, realizes the infrared spectroscopy signals that on-line checkingi obtains the ferromagnetic particle in powder.
In order to the discharging opening 4-1 that reaches rotary-tray 4 with execute expect scraper Taper Pipe 12 vertical coaxial time powder Fe directly enter discharging cone-shaped tube 7, setting rotary-tray drive motor 5 often rotates a circle, the discharging opening 4-1 of rotary-tray 4 vertical with feed pipe 8 coaxial time, drive screw servomotor 11 suspends.Drive screw servomotor 11 suspends, and at the uniform velocity namely pushing screw rod 9 is suspended, and the powder Fe of feed pipe 8 suspends feeding.When the discharging opening 4-1 of rotary-tray 4 produces with feed pipe 8 vertical coaxial position, drive screw servomotor 11 is resumed work, and again recovers feeding, periodic duty like this.
In order to ensure the interference that ferromagnetic particle electromagnetic induction can not be subject to rotary-tray 4, motor seat board 13 feels magnetic contained in the powder Fe that the alternating magnetic field of eddy current coil 1 makes to be detected, rotary-tray 4, motor seat board 13 adopt nonmetallic materials, pottery or other non-magnetic macromolecular material manufacture.
Claims (4)
1. an online ferromagnetic microparticles detection system, is characterized in that, described ferromagnetic microparticles detection system is made up of Zou Liao mechanism and detection system; Described Zou Liao mechanism comprises drive screw servomotor (11), at the uniform velocity pushing screw rod (9), rotary-tray drive motor (5), rotary-tray (4), pallet cover (6), discharging cone-shaped tube (7), feed pipe (8), for material barrel (10), executes material scraper Taper Pipe (12), and installs the motor seat board (13) of rotary-tray drive motor (5);
Described discharging cone-shaped tube (7) is arranged on described motor seat board (13); Rotary-tray (4) has discharging opening (4-1), discharging opening (4-1) and discharging cone-shaped tube (7) are by the open communication on motor seat board (13);
Described pallet cover (6) is installed on rotary-tray (4) top: rotary-tray drive motor (5) drives rotary-tray (4) to rotate, by the driving effect of rotary-tray drive motor (5), the powder of the upper carrying of rotary-tray (4) is made to deliver to surveyed area continuously; The motor seat board (13) installing rotary-tray drive motor (5) is positioned at the below of rotary-tray (4); Executing material scraper Taper Pipe (12) is installed in pallet cover (6), for charity powder; The one end of executing material scraper Taper Pipe (12) connects feed pipe (8), at the uniform velocity pushing screw rod (9) is installed, at the uniform velocity the axle head of pushing screw rod (9) and drive screw servomotor (11) connecting shaft in the pipe of the other end of feed pipe (8); Feed pipe (8) is mutually vertical with for material barrel (10) and be communicated with; During drive screw servomotor (11) work, at the uniform velocity pushing screw rod (9) confess in the future the need of material barrel (10) detect powder at the uniform velocity cloth impose on rotary-tray (4);
Described detection system forms by detecting infrared eye (2), reference infrared eye (3) and eddy current coil (1); Detection infrared eye (2) and reference infrared eye (3) are installed on the pallet cover (6) of Zou Liao mechanism, detection infrared eye (2) and reference infrared eye (3) are on same donut, and angle is between the two 120 °; Eddy current coil (1) is installed on the motor seat board (13) of rotary-tray (4) below, and it is coaxial in opposite directions to detect infrared eye (2).
2. according to online ferromagnetic microparticles detection system according to claim 1, it is characterized in that, the axle of described rotary-tray drive motor (5) penetrates the circle center hole of rotary-tray (4) and fixing and locking, and driven rotary pallet (4) rotates.
3. according to online ferromagnetic microparticles detection system according to claim 1, it is characterized in that, described eddy current coil (1) is made up of the cylinder of wire (1-2) around cylindrical ferrite (1-1).
4. according to online ferromagnetic microparticles detection system according to claim 1, it is characterized in that, by executing, described material scraper Taper Pipe (12) of executing expects that cover mouth (12-2) and backgauge arc (12-1) form; The one end connecting feed pipe (8) is straight tube, and the other end is that flaring executing expects cover mouth (12-2), and the lower edge of radial rear side of executing material cover mouth (12-2) is provided with backgauge arc (12-1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310544555.8A CN103645122B (en) | 2013-11-05 | 2013-11-05 | Online ferromagnetic microparticles detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310544555.8A CN103645122B (en) | 2013-11-05 | 2013-11-05 | Online ferromagnetic microparticles detection system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103645122A CN103645122A (en) | 2014-03-19 |
| CN103645122B true CN103645122B (en) | 2016-01-20 |
Family
ID=50250374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310544555.8A Expired - Fee Related CN103645122B (en) | 2013-11-05 | 2013-11-05 | Online ferromagnetic microparticles detection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103645122B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4896532A (en) * | 1988-11-09 | 1990-01-30 | Thermal Surveys, Inc. | Method of detecting turbulence in laminar air flow |
| GB2239519A (en) * | 1989-12-06 | 1991-07-03 | De Beers Ind Diamond | Method and apparatus for type IIB diamond sorting |
| CN102650604A (en) * | 2011-09-26 | 2012-08-29 | 北京京东方光电科技有限公司 | Airflow distribution testing method and apparatus system for clean room |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4159952B2 (en) * | 2003-09-08 | 2008-10-01 | マークテック株式会社 | Metal foreign object detection device and detection method |
-
2013
- 2013-11-05 CN CN201310544555.8A patent/CN103645122B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4896532A (en) * | 1988-11-09 | 1990-01-30 | Thermal Surveys, Inc. | Method of detecting turbulence in laminar air flow |
| GB2239519A (en) * | 1989-12-06 | 1991-07-03 | De Beers Ind Diamond | Method and apparatus for type IIB diamond sorting |
| CN102650604A (en) * | 2011-09-26 | 2012-08-29 | 北京京东方光电科技有限公司 | Airflow distribution testing method and apparatus system for clean room |
Non-Patent Citations (1)
| Title |
|---|
| 装备中的无损检测技术;王震等;《仪表技术》;20061113(第5期);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103645122A (en) | 2014-03-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104458899A (en) | Magnetic powder detection device and detection method for large nut forgings | |
| CN102590326A (en) | Magnetic memory/magnetic leakage integrated multi-probe detection device for tube and shaft type parts | |
| CN109089499A (en) | A kind of organic fertilizer variable application device and its method based on conductivity detection | |
| CN104316779A (en) | Array type annular electrostatic sensor and pneumatic transmission powder measurement device and method | |
| Cheng et al. | Effects of atomization parameters of dust removal nozzles on the de-dusting results for different dust sources | |
| CN103645122B (en) | Online ferromagnetic microparticles detection system | |
| CN104101644B (en) | Small-caliber pipeline inwall magnetic powder detection method and device | |
| CN103476195A (en) | Device and method for enhancing high-efficient charging of atmospheric fine particles | |
| CN205384325U (en) | Pipeline powder static monitoring ware | |
| CN103754587B (en) | High stability particle dust charging gear | |
| CN102553687B (en) | Ballstone group dynamic distribution detection system and method | |
| CN106645382B (en) | Method for detecting iron content in quartz sand by applying isothermal remanence | |
| CN109883909A (en) | A kind of apparatus for measuring dust concentration | |
| CN106123756B (en) | A kind of contactless magnetic field array sensing detecting system and probe distance setting method | |
| CN201796091U (en) | Electrostatic induction device for collecting and measuring electrostatic signals of gas-phase and solid-phase flow | |
| CN107328828A (en) | Aircraft engine oil chip is detected and analysis integrated design method and device | |
| CN102866086B (en) | On-line monitoring sensor of metal particles in flowing oil | |
| CN110568278B (en) | Pipeline powder static on-line monitoring device | |
| CN103543098A (en) | Shear rheological device for air wrapped rheological property research in high-speed and long-range landslide | |
| CN105834004A (en) | Separation method and device of nano particles | |
| Liu et al. | Separating efficiency of ferromagnetic particles and principle of low-intensity dry magnetic separator under different air supply modes: Based on multi-physical modeling | |
| Cheng et al. | Collection of airborne particles by a high-gradient permanent magnetic method | |
| CN211385387U (en) | High-gradient magnetic separation experimental device | |
| CN107356465A (en) | A kind of mixed four separating devices of pedotheque | |
| CN207036542U (en) | A kind of mixed four separating devices of pedotheque |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160120 Termination date: 20161105 |