CN109990869A - Magnetic rotor formula material detection device and method - Google Patents
Magnetic rotor formula material detection device and method Download PDFInfo
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- CN109990869A CN109990869A CN201910389608.0A CN201910389608A CN109990869A CN 109990869 A CN109990869 A CN 109990869A CN 201910389608 A CN201910389608 A CN 201910389608A CN 109990869 A CN109990869 A CN 109990869A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/226—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water measuring the braking of a rotatable element
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- Geophysics And Detection Of Objects (AREA)
Abstract
The present invention relates to a kind of magnetic rotor formula material detection device and methods, belong to material detection field, solve the problems, such as that existing material detection device sensitivity is low, be easily damaged, safety it is poor.The present invention includes: mounting base, mounting rack, magnetic rotor and magnetic field generator；Mounting rack and magnetic field generator are mounted in mounting base；Magnetic rotor is installed in rotation on mounting rack；Magnetic rotor is equipped with magnetic field receptor and signal projector；Magnetic field generator can generate the magnetic field of mechanical periodicity, and magnetic rotor periodic wobble and/or rotation can be driven by magnetic field receptor；Mounting rack is equipped with signal receiver, and whenever magnetic rotor rotates and/or is rocked at trigger position, signal receiver receives the monitoring signals that signal projector issues, and exports monitoring result, and record receives the interval time of detection signal.The present invention has many advantages, such as that high sensitivity, accurate and reliable, the scope of application is wide, installs and uses that flexible and convenient, non-maintaining, the service life is long.
Description
Technical field
The present invention relates to material detection technique field more particularly to a kind of magnetic rotor formula material detection device and methods.
Background technique
There are many material-level detecting device type on the market, and common Anti-rotation type material level switch is installed with any angle, detection
Position is changeable, the good feature of material particles size adaptability, but after working long hours, and the mechanical parts such as machine shaft are easy
Abrasion corrosion is stuck, especially moist salt mist environment, or even causes motor damage, and service life is low.There is a kind of electromagnetism to weigh formula
Article detection device utilizes electromagnetic induction principle, and electromagnetic force pushes magnetic swing rod outside, and when backswing taps electromagnetic coil and generates sense
Voltage is answered, to have detected whether that material blocks.But swing rod will lean on gravity right angle setting, and flexibility is poor, and magnetic force swing rod backswing taps
Electromagnetic coil is easy to appear metal percussion and brings spark, extremely dangerous to combustibles.Swing rod backswing taps electromagnetic coil inability, sense
Answer voltage it is small, even without influencing to detect, report by mistake, sensitivity and reliability all reduce.
Other common level switches such as tuning-fork type, condenser type, radio frequency admittance formula, vibration bar type level switch also have it
Respective limitation.Reliability, exempt from debugging, signal it is sensitive, in terms of such as: it is high temperature, high pressure, high humidity, high viscous
It is attached etc. have the shortcomings that it is different degrees of.
Summary of the invention
In view of above-mentioned analysis, the present invention is intended to provide a kind of magnetic rotor formula material detection device and method, to solve
Certainly existing electromagnetism deliberation formula and blocking rotary type material detection device sensitivity are low, are easily damaged, the problem that safety is poor.
The purpose of the present invention is mainly achieved through the following technical solutions:
In technical solution of the present invention, a kind of magnetic rotor formula material detection device, magnetic rotor formula material detection device
It include: mounting base, mounting rack, magnetic rotor and magnetic field generator；Mounting rack and magnetic field generator are mounted in mounting base；Magnetic force
Rotor is installed in rotation on mounting rack；
Magnetic rotor is equipped with magnetic field receptor and signal projector；Magnetic field generator can generate the magnetic of mechanical periodicity
, and magnetic rotor periodic wobble and/or rotation can be driven by magnetic field receptor；
Mounting rack is equipped with signal receiver, and whenever magnetic rotor rotates and/or is rocked at trigger position, signal is received
Device receives the monitoring signals that signal projector issues, and exports monitoring result, and record the interval time for receiving detection signal.
In technical solution of the present invention, magnetic rotor is equipped with axis hole, and axis of the rotor subject of magnetic rotor about axis hole
Line rotational symmetry；
Magnetic rotor is around the shaft rotation for passing through axis hole and fixing with mounting rack.
In technical solution of the present invention, magnetic field receptor is equipped at least one, and is arranged at distance axis on rotor subject
At the maximum position of the axis in hole.
In technical solution of the present invention, signal projector is equipped at least one, and is equipped with to the distance on rotor subject
At the maximum position of the axis of axis hole.
In technical solution of the present invention, the monitoring signals between signal projector and signal receiver are magnetic field signal, electricity
One of field signal, optical signal and thermal signal are a variety of.
In technical solution of the present invention, signal projector and magnetic field receptor are permanent magnet, and signal receiver is magnetic biography
Sensor.
In technical solution of the present invention, magnetic field generator is electromagnet, and control circuit can make electromagnet generate period change
The magnetic field of change.
In technical solution of the present invention, control circuit includes: field drives circuit, power circuit, signal receiver interface
Circuit, output circuit and governor circuit；
Power circuit is used to provide power supply for magnetic rotor formula material detection device；
Governor circuit is used to control the starting and/or stopping of magnetic rotor formula material detection device；
Field drives circuit, which is used to control magnetic field generator, periodically changes magnetic field；
Signal receiver interface circuit is used to receive the monitoring result signals of the output of signal receiver；
Output circuit is used to receive monitoring result signals, and judges whether the period of motion of magnetic rotor changes, and is then defeated
The detection signal of material is detected out, and otherwise the detection signal of material is not detected in output.
In technical solution of the present invention, magnetic rotor is equipped with damping structure, and damping structure can generate resistance when touching material
Only and/or promotion magnetic rotor rotates and/or the opplied moment of swing.
In technical solution of the present invention, mounting rack is equipped with gag lever post, and magnetic rotor can be made only to occur to swing without sending out
Raw rotation；
Mounting base includes the fixed frame and shell being detachably connected；Mounting rack is fixedly mounted on the shell, magnetic field generator
Installation is inside the housing.
In technical solution of the present invention, a kind of material detection method, material detection method is used in above-mentioned technical proposal
Magnetic rotor formula material detection device；
Material detection method specifically:
The electromagnetic field that magnetic field generator generates acts in magnetic rotor and generates driving electromagnetic torque, so that magnetic rotor
Along the axial rotation of fixed rotary shaft；Damping structure and signal projector in magnetic rotor rotate synchronously, by detecting signal
The change in location of transmitter, to judge the rotary state of magnetic rotor；If contacting magnetic rotor without material, magnetic rotor
Rotary state is controlled by control circuit, rotates by regular time and speed；When there is material to touch magnetic rotor, magnetic force turns
The rotation normal condition of son is broken；Motion state by detecting magnetic rotor is finally realized to whether there is or not materials and combustion
Detection.
Technical solution of the present invention at least can be realized one of following effect:
1, the present invention is rotated or is swung by mechanical periodicity magnetic drive magnetic rotor, once detect material magnetic rotor
The period of motion or location information difference will occur with the magnetic force change period, to realize the detection of material, entire detection dress
It is simple to set structure, high sensitivity, and the case where be not in erroneous detection.
2, the present invention constrains magnetic rotor movement by mounting rack, avoids through gravity and drives rotor, therefore is pacifying
When dress, without considering detection device setting angle and direction, it can be achieved that freely installing, material detection device of the invention is increased
The scope of application.
3, magnetic rotor of the invention and electromagnet coil use contactless structure, therefore avoid rotor and coil
Collision, electric spark will not be generated because of collision, improves the safety of material detection device of the invention.
4, the invention avoids use motor driven detection device setting angle and direction, it can be achieved that freely installing, therefore
It therefore, is further increased without mal-conditions, the corrosion problems that motor will not occur such as the moist salt fogs that considers working environment
The scope of application of material detection device of the invention.
It in the present invention, can also be combined with each other between above-mentioned each technical solution, to realize more preferred assembled schemes.This
Other feature and advantage of invention will illustrate in the following description, also, certain advantages can become from specification it is aobvious and
It is clear to, or understand through the implementation of the invention.The objectives and other advantages of the invention can by specification, claims with
And it is achieved and obtained in specifically noted content in attached drawing.
Detailed description of the invention
Attached drawing is only used for showing the purpose of specific embodiment, and is not to be construed as limiting the invention, in entire attached drawing
In, identical reference symbol indicates identical component.
Fig. 1 is structural schematic diagram of the embodiment of the present invention；
Fig. 2 is the main view of the embodiment of the present invention；
Fig. 3 is the top view of the embodiment of the present invention；
Extreme case signal when the magnetic field receptor and signal projector that Fig. 4 is the embodiment of the present invention are permanent magnet
Figure；
Fig. 5-1 is the magnetic rotor structural schematic diagram of example 1；
Fig. 5-2 is the magnetic rotor structural schematic diagram of example 2；
Fig. 5-3 is the magnetic rotor structural schematic diagram of example 3；
Fig. 6 is the damping structure schematic diagram of the embodiment of the present invention；
Fig. 7 is the mounting base structural schematic diagram of the embodiment of the present invention；
Fig. 8 is the mounting rack variant structure schematic diagram of the embodiment of the present invention；
Fig. 9 is the control circuit schematic diagram of the embodiment of the present invention.
Appended drawing reference:
1- magnetic rotor；11- rotor subject；12- axis hole；2- mounting rack；3- mounting base；31- shell；32- fixed frame；4-
Signal receiver；The magnetic field 5- receptor；6- magnetic field generator；7- signal projector；8- damping structure；9- gag lever post.
Specific embodiment
Specifically describing the preferred embodiment of the present invention with reference to the accompanying drawing, wherein attached drawing constitutes the application a part, and
Together with embodiments of the present invention for illustrating the principle of the present invention, it is not intended to limit the scope of the present invention.
As shown in Figure 1, the embodiment of the invention provides a kind of magnetic rotor formula material detection devices, comprising: mounting base 3,
Mounting rack 2, magnetic rotor 1 and magnetic field generator 6；Mounting rack 2 and magnetic field generator 6 are mounted in mounting base 3；Magnetic rotor 1
It is installed in rotation on mounting rack 2；Magnetic rotor 1 is equipped with magnetic field receptor 5 and signal projector 7；6 energy of magnetic field generator
The magnetic field of mechanical periodicity is enough generated, and 1 periodic wobble of magnetic rotor and/or rotation can be driven by magnetic field receptor 5；
Mounting rack 2 is equipped with signal receiver 4, and whenever magnetic rotor 1 rotates and/or is rocked at trigger position, signal receiver 4 is connect
The monitoring signals that signal projector 7 issues are received, export monitoring result, and record the interval time for receiving detection signal.This hair
It is excellent that bright embodiment has that high sensitivity, accurate and reliable, the scope of application is wide, it is flexible and convenient, non-maintaining to install and use, the service life is long etc.
Point.
The existing material detection device for exempting from debugging is mainly that blocking rotary type and electromagnetism weigh formula: blocking rotary type is due to using motor
Drive rotor, need to consider the working environment of motor when in use, should not be used in moist salt mist environment, the abrasion of motor and
Corrosion can be more obvious, reduces the service life of whole device；Electromagnetism weighs formula electromagnetic drive swing rod, and swing rod is in gravity
Under fall back electromagnetic coil, due to needing gravity, the holding of swing rod is vertical during installation, increases the difficulty of installation, swing rod
Spark may be generated when tapping coil, is easy the material that ignites, especially when material is dust-like material, may result in quick-fried
It is fried.
The embodiment of the present invention generates periodically variable magnetic field by magnetic field generator 6, and acts on magnetic in magnetic rotor 1
On the receptor 5 of field, and then make the periodically rotation of magnetic rotor 1 or swing, whenever magnetic rotor 1 rotates or be rocked to trigger bit
It sets, signal receiver 4 can all receive the monitoring signals of a signal projector 7 sending, turn if acting on magnetic force without material
On son 1, the variation of monitoring signals, the location information including period and/or magnetic rotor 1 also can be with identical with changes of magnetic field
The signal of material is not detected in rule variation, at this time output of the embodiment of the present invention；Once material acts in magnetic rotor 1, that
It would necessarily affect the motion state of magnetic rotor 1, so that the changing rule of monitoring signals and changes of magnetic field rule occur one
Fixed difference, at this time output of the embodiment of the present invention have detected that the signal of material.The embodiment of the present invention is avoided as electromagnetism is weighed
Formula is the same, rotor is driven by gravity, therefore during installation, without considering whether rotor is vertically arranged, increases the present invention
Material detection device the scope of application；In addition, the magnetic rotor 1 of the embodiment of the present invention is with electromagnet coil using contactless
Structure, therefore avoid the collision of rotor and coil, electric spark will not be generated because of collision, improve material inspection of the invention
Survey the safety of device.The present invention also unlike blocking rotary type, is avoided using motor driven rotor, there is no need to consider work
Therefore the mal-conditions such as the moist salt fog of environment motor will not occur, further increase material detection device of the invention
The scope of application.
Since in the embodiment of the present invention, magnetic rotor 1 needs to rotate, therefore handles and guarantees integrally-built steady stability,
Also to guarantee dynamic stability.As shown in Figure 2 and Figure 3, in the embodiment of the present invention, magnetic rotor 1 is equipped with axis hole 12, and magnetic rotor 1
Axial-rotational Symmetry of the rotor subject about axis hole 12, the magnetic rotor 1 of rotational symmetry enables to whole center of gravity and rotation
Shaft axis is overlapped, and ensure that stability of the structure under rotation status.Magnetic rotor 1 is consolidated around across axis hole 12 and with mounting rack 2
Fixed shaft rotation, then can guarantee the stability of magnetic rotor 1 under static state.
In view of the magnetic field that magnetic field generator 6 generates will be by driving magnetic field receptor 5, rotate magnetic rotor 1, magnetic
Receptor 5 can be set multiple, also can be set one.Specifically, as shown in Figure 2 and Figure 3, in the embodiment of the present invention, magnetic field
Receptor 5 is equipped at least one, and is arranged at the maximum position of axis on rotor subject apart from axis hole 12, and magnetic field is felt
The setting of receiver 5 purpose at this location is, the magnetic field that magnetic field generator 6 generates is to the acting force arm of magnetic rotor 1, in turn
Magnetic field size can be reduced as far as possible in the case where guaranteeing that generation is enough the torque for driving magnetic rotor 1 to rotate, and prevented excessive
Magnetic field generates interference to signal receiver 4.
As shown in Figure 2 and Figure 3, in the embodiment of the present invention, signal projector 7 is equipped at least one, and is equipped in rotor
At the maximum position of axis in main body apart from axis hole 12, although set-up mode effect identical as magnetic field receptor 5 is different, letter
Number transmitter 7 is due to wanting launch monitor signal, if getting too close to of being arranged of adjacent signal projector 7, it is likely that can generate
Interference, but if the quantity of signal projector 7 is more, corresponding central angle is smaller, it is necessary to by increasing radius of turn
Mode is come so that the distance between signal projector 7 is larger, to guarantee the accurate reception of monitoring signals.
Under normal conditions, the form of monitoring signals with no restrictions, can use magnetic field signal, electric field in the embodiment of the present invention
One of signal, optical signal and thermal signal are a variety of, as long as when magnetic rotor 1 moves to trigger position can be able to be letter
Number receiver 4 receives the monitoring signals of the sending of signal projector 7, specified otherwise is needed, if signal projector 7
Equipped with multiple, within the same period of motion of magnetic rotor 1, signal receiver 4 can be triggered repeatedly, but equally can be according to multiple
The changing rule of signal identifies cycle information.
As shown in figure 4, in order to facilitate the production and manufacture of the embodiment of the present invention, signal projector 7 in the embodiment of the present invention
It can be permanent magnet with magnetic field receptor 5, signal receiver 4 is Magnetic Sensor, it is contemplated that, can the case where extreme simplification structure
To set same permanent magnet for signal projector 7 and magnetic field receptor 5, the permanent magnet in magnetic rotor 1 is set in magnetic force
When rotor 1 rotates, can serve as magnetic field receptor 5 and have can serve as signal projector 7, but be the need to ensure that magnetic field generator 6 produces
Raw magnetic field is not enough to influence signal receiver 4, or when handling the signal of signal receiver 4 directly by magnetic field generator 6
The magnetic field of generation directly filters out the interference signal of signal receiver 4.
Illustratively, three kinds of examples are given in the embodiment of the present invention:
Example 1
As shown in fig. 5-1, magnetic rotor 1 is linear type bar, and the middle part of bar is arranged in axis hole 12, and both ends are permanent magnet,
Signal receiver 4 is Magnetic Sensor, and whenever Magnetic Sensor triggers twice, magnetic rotor 1 rotates a circle.
Example 2
As shown in Fig. 5-2, magnetic rotor 1 is cross bar, and the middle part of bar is arranged in axis hole 12, and four ends are permanent magnet,
Signal receiver 4 is Magnetic Sensor, and whenever Magnetic Sensor triggers four times, magnetic rotor 1 rotates a circle.
Example 3
As shown in Fig. 5-3, magnetic rotor 1 is disk, and 4 uniformly distributed permanent magnets are arranged in disk outer rim, and signal projector 7 is
Laser emitter, signal receiver 4 are laser pickoff, and whenever laser pickoff triggers 4 times, magnetic rotor 1 rotates a circle.
Although magnetic rotor 1 was both able to rotate, can also swing, if magnetic field receptor 5 is provided only with 1, magnetic rotor 1
Turn to magnetic field receptor 5 and magnetic field hair emperorship apart from it is farthest when, it is possible that movement dead, and then make magnetic rotor 1
It blocks.In order to avoid above situation, in the embodiment of the present invention, mounting rack 2 is equipped with gag lever post 9, can make magnetic rotor 1 hair
Raw to swing without rotating, when magnetic rotor 1 is moved towards the dead-centre position in above situation, gag lever post 9 can be prevented
Magnetic rotor 1 continues to move, and swing magnetic rotor 1 can only.If magnetic rotor 1 is using along counterclockwise or clockwise
A direction continuous rotation, then removable lower limit bar 9.
In view of magnetic field generator 6 is required to generate the magnetic field of mechanical periodicity, therefore magnetic field generator 6 is needed using easy
In the structure of control, specifically, magnetic field generator 6 is electromagnet, and makes electromagnet by control circuit in the embodiment of the present invention
Generate the magnetic field of mechanical periodicity；Electromagnet can be individual coil, can add iron core to increase magnetic force.
As shown in figure 9, control circuit includes: field drives circuit, power circuit, signal receiver interface circuit, output
Circuit and governor circuit；Power circuit is used to provide power supply for magnetic rotor formula material detection device；Governor circuit is used to control
The starting and/or stopping of magnetic rotor formula material detection device；Field drives circuit is used to control magnetic field generator 6 periodic
Change magnetic field；Signal receiver interface circuit is used to receive the monitoring result signals of the output of signal receiver 4；Output circuit is used
Monitoring result signals are received, and judge whether the period of motion of magnetic rotor 1 changes, are, output detects the detection of material
Signal, otherwise the detection signal of material is not detected in output.Above each section circuit can be respectively individually encapsulated in mounting base 3
It can also unify to encapsulate.
In order to make magnetic rotor 1 more sensitively by the effect of material, as shown in Figure 6, Figure 7, the present invention is implemented
In example, magnetic rotor 1 is equipped with damping structure, and damping structure can generate 1 turn of magnetic rotor of prevention and/or promotion when touching material
Opplied moment that is dynamic and/or swinging, and the damping characteristic of damping structure can also prevent magnetic rotor 1 excessive because of the active force of material
And it damages.Position of the damping structure in magnetic rotor 1 with no restrictions, can be set to the Axial-rotational Symmetry around axis hole 12,
Damping structure can be the arbitrary shapes such as rod-shaped, aliform, lobate, to adapt to the material of various trait.
In order to facilitate installation, as shown in fig. 7, mounting base 3 includes the fixation being detachably connected in the embodiment of the present invention
Frame 32 and shell 31；Mounting rack 2 is fixedly mounted on shell 31, and magnetic field generator 6 is mounted on inside shell 31；Installation can also be with
For the integral structure outside shell 31 is arranged in.Metal or nonmetallic materials can be used in magnetic rotor 1, mounting rack 2, mounting base 3
Such as: copper, aluminium, stainless steel, nylon, polytetrafluoroethylene (PTFE) are to adapt to varying environment.Mounting rack 2 is capable of fixing magnetic rotor 1, and shape
At the constraint axially rotated, moreover it is possible to be played a certain protective role under the impact of foreign object to magnetic rotor 1.As shown in figure 8, peace
It shelves 2 shape also with no restrictions, can be U-frame, can also be cantilever lever.
Illustrate the detection method for using the embodiment of the present invention below with reference to above-mentioned example 1.
Electromagnet generates driving electromagnetic torque, so that axial rotation of the magnetic rotor 1 along fixed rotary shaft.Magnetic rotor 1
On damping structure and signal projector 7 rotate synchronously, by detect signal projector 7 change in location, come judge magnetic force turn
The rotary state of son 1.If contacting magnetic rotor 1 without material, the rotary state of magnetic rotor 1 is controlled by the journey of control circuit
Sequence control is rotated such as by regular time and speed: being rotated forward, reversion, rotation.When there is material to touch magnetic rotor 1, magnetic
The rotation normal condition of power rotor 1 is broken, and the time that slows is elongated.Even magnetic rotor 1 is not able to rotate, damping structure
Purpose is the resistance for increasing magnetic rotor 1 when touching material, adapts to varying environment, such as: liquid, solid size particles.It protects
The reliable detection of card and the judgement to different material.Because the damping of different material is different, speed that magnetic rotor 1 rotates and when
Between it is different.Motion state by detecting magnetic rotor 1 is finally realized to whether there is or not the detections of material and combustion.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of by anyone skilled in the art,
It should be covered by the protection scope of the present invention.
Claims (10)
1. a kind of magnetic rotor formula material detection device, which is characterized in that the magnetic rotor formula material detection device includes: peace
Fill seat (3), mounting rack (2), magnetic rotor (1) and magnetic field generator (6)；The mounting rack (2) and magnetic field generator (6) installation
On mounting base (3)；The magnetic rotor (1) is installed in rotation on the mounting rack (2)；
The magnetic rotor (1) is equipped with magnetic field receptor (5) and signal projector (7)；The magnetic field generator (6) can produce
The magnetic field of raw mechanical periodicity, and the magnetic rotor (1) periodic wobble can be driven by the magnetic field receptor (5)
And/or rotation；
The mounting rack (2) is equipped with signal receiver (4), whenever the magnetic rotor (1) rotates and/or be rocked to trigger bit
Place is set, the signal receiver (4) receives the monitoring signals that signal projector (7) issue, and exports monitoring result, and record reception
To the interval time of detection signal.
2. magnetic rotor formula material detection device according to claim 1, which is characterized in that the magnetic rotor (1) sets
Have axis hole (12), and Axial-rotational Symmetry of the rotor subject of the magnetic rotor (1) about axis hole (12)；
The magnetic rotor (1) rotates around across the axis hole (12) and with the fixed rotating shaft of the mounting rack (2).
3. magnetic rotor formula material detection device according to claim 2, which is characterized in that the magnetic field receptor (5)
Equipped at least one, and be arranged at the axis of axis hole described in distance (12) on the rotor subject most far from.
4. magnetic rotor formula material detection device according to claim 3, which is characterized in that the signal projector (7)
Equipped at least one, and be equipped with to axis hole described in the distance on the rotor subject (12) axis most far from.
5. magnetic rotor formula material detection device according to claim 4, which is characterized in that the signal projector (7)
Monitoring signals between signal receiver (4) are one of magnetic field signal, electric field signal, optical signal and thermal signal or more
Kind.
6. magnetic rotor formula material detection device according to claim 4, which is characterized in that the signal projector (7)
It is permanent magnet with magnetic field receptor (5), signal receiver (4) is Magnetic Sensor.
7. magnetic rotor formula material detection device according to claim 1, which is characterized in that it further include control circuit, institute
Stating magnetic field generator (6) is electromagnet, and the control circuit can make the magnetic field of the electromagnet generation mechanical periodicity.
8. according to magnetic rotor formula material detection device described in right 7, which is characterized in that the control circuit includes: magnetic field
Driving circuit, power circuit, signal receiver interface circuit, output circuit and governor circuit；
The power circuit is used to provide power supply for the magnetic rotor formula material detection device；
The governor circuit is used to control the starting and/or stopping of the magnetic rotor formula material detection device；
The field drives circuit, which is used to control the magnetic field generator (6), periodically changes magnetic field；
The signal receiver interface circuit is used to receive the monitoring result signals of the output of the signal receiver (4)；
The output circuit is used to receive monitoring result signals, and judges whether the period of motion of magnetic rotor (1) changes, and is then
Output detects the detection signal of material, and otherwise the detection signal of material is not detected in output.
9. magnetic rotor formula material detection device according to any one of claims 1 to 6, which is characterized in that the magnetic force turns
Sub (1) is equipped with damping structure, and the damping structure can generate prevention and/or promote the magnetic rotor (1) when touching material
Rotation and/or the opplied moment swung；The mounting rack (2) is equipped with gag lever post (9), can make the magnetic rotor (1) only
Occur to swing without rotating；
The mounting base (3) includes the fixed frame (32) and shell (31) being detachably connected；The mounting rack (2) is fixedly mounted on
On the shell (31), it is internal that the magnetic field generator (6) is mounted on the shell (31).
10. a kind of material detection method, which is characterized in that the material detection method uses magnetic force described in claim 1 to 9
Rotator type material detection device；
The material detection method specifically:
The electromagnetic field that magnetic field generator (6) generates acts on magnetic rotor (1) and generates driving electromagnetic torque, so that magnetic force turns
The axial rotation of sub (1) along fixed rotary shaft；Damping structure and signal projector (7) in magnetic rotor (1) rotate synchronously, and lead to
The change in location of detection signal projector (7) is crossed, to judge the rotary state of magnetic rotor (1)；If contacting magnetic without material
The rotary state of power rotor (1), magnetic rotor (1) is controlled by control circuit, rotates by regular time and speed；When there is material
When touching magnetic rotor (1), the rotation normal condition of magnetic rotor (1) is broken；By the movement for detecting magnetic rotor (1)
State is finally realized to whether there is or not the detections of material and combustion.
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| CN109990869B (en) | 2021-08-03 |
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