CN101250772B - Device for detecting and removing foreign matter - Google Patents
Device for detecting and removing foreign matter Download PDFInfo
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- CN101250772B CN101250772B CN2008100072841A CN200810007284A CN101250772B CN 101250772 B CN101250772 B CN 101250772B CN 2008100072841 A CN2008100072841 A CN 2008100072841A CN 200810007284 A CN200810007284 A CN 200810007284A CN 101250772 B CN101250772 B CN 101250772B
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- 230000005855 radiation Effects 0.000 claims abstract description 113
- 239000000463 material Substances 0.000 claims abstract description 70
- 230000007246 mechanism Effects 0.000 claims abstract description 34
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- 230000003287 optical effect Effects 0.000 claims abstract description 9
- 238000005286 illumination Methods 0.000 claims description 6
- 229910052736 halogen Inorganic materials 0.000 claims description 5
- 150000002367 halogens Chemical class 0.000 claims description 5
- 230000005679 Peltier effect Effects 0.000 claims description 3
- 230000001154 acute effect Effects 0.000 claims description 3
- 239000004065 semiconductor Substances 0.000 claims description 3
- 230000003595 spectral effect Effects 0.000 claims description 3
- 239000002657 fibrous material Substances 0.000 claims description 2
- 230000014509 gene expression Effects 0.000 description 10
- 229920000742 Cotton Polymers 0.000 description 9
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- 238000004458 analytical method Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
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Images
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
- D01G31/00—Warning or safety devices, e.g. automatic fault detectors, stop motions
- D01G31/003—Detection and removal of impurities
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
- Treatment Of Fiber Materials (AREA)
Abstract
The invention provides a device for detecting and separating impurities in a material flow, including a radiation mechanism (3) for radiating the material flow and at least one a sensor device (4) for detecting the radiated impurities in the material flow. A rotatable polygonal mirror (10) for scanning the material flow row by row is provided, radiation of the radiation mechanism (3) can be deflected to the material flow and the radiation reflected by the material flow can be deflected to the sensor device (4) both by utilizing the polygonal mirror. The radiation mechanism (3) and the sensor device (4) are arranged coaxially with one being in front and the other being back with regard to an optical irradiation shaft (L). The radiation mechanism (3) mainly comprises a radiation source (8), a concave reflecting mirror (11) for collimate the radiation to the polygonal mirror (10) along the optical irradiation shaft (L), and a back reflector (12), by which back side of the radiation can be guided toward the concave reflecting mirror (11).
Description
Technical field
The present invention relates to be used for detect and isolate the device of the impurity of material stream.Such device mainly is used in the cotton mill, is used for the raw cotton cleaning.Raw cotton can contain the undesirable impurity of spinning process usually.Impurity for example may be tightrope, jute particle or other fabric particle, plastic sheeting or material granule.
Background technology
At for example about lattice. in the paper of Liv Ullmann " impurity in the raw cotton detects " (Zurich 1996 is referring to the 5.1st chapter and with reference to Fig. 5 .1), one type of similar device is disclosed.Here, flocking is monitored through the displaying passage and by flying-spot scanner in pneumatic conveying flow.For minute line scanning material stream, be provided with the mirror wheel that is prism shape, the light supply apparatus and the sensor device that have laser instrument are aimed at mirror wheel, and here, laser beam is gone to towards mirror wheel by the optically-coupled input.In addition, light source and sensor are arranged in orthogonal mode roughly in the mirror wheel vertical view.The verified this structure of the fact occupies sizable place.Because semitransparent mirror is used for the optically-coupled input, so loss occurs, this has a negative impact to optical efficiency.
Summary of the invention
Thereby, the objective of the invention is to avoid the shortcoming of prior art, particularly provide the above-mentioned type, take up an area of less device.Particularly, detecting unit should be characteristics with the compact conformation.
To achieve these goals, the invention provides a kind of be used for from fibrous material particularly the material stream of raw cotton detect and the device of removing foreign matter, it has: at least one radiation mechanism that is used for irradiation material stream is used for the sensor device of the irradiated impurity of test material stream with at least one, wherein for minute line scanning material stream, be provided with rotatable polygon prism, utilize polygon prism, the radiant energy of this radiation mechanism is deflected to material stream, and can be deflected to sensor device by material stream radiation reflected; Separator effectively is connected with sensor device and is used to isolate the impurity that is detected, and wherein, radiation mechanism and sensor device are that coaxial front and back are arranged about the optical illumination axle.
Because main member (being radiation mechanism, sensor device and polygon prism) is arranged on the line, so can form elongated detecting unit.The characteristics of this configuration structure also are to have high optical efficiency.Another advantage of this configuration structure is, all is congruent in locational irradiation of each mirror wheel and imaging.From the radiation of radiation mechanism can be directly or indirectly by polygon prism deflection to or guiding flow to material.Can in transfer pipeline, carry material stream with pneumatic mode.But, also can for example on conveyer belt, carry material stream with the web form.This device especially also is suitable for the such material stream of opening roller zone interscan in spinning is prepared.
Polygon prism can be a prism, and its each minute surface is parallel to rotation ground and extends.But can expect also that the polygon prism wheel constitutes with the shape of the pyramid or the prismoid, here, the obvious relative rotation axi line of each minute surface tilts.The degree of deflection of incident ray can be determined by the angle of inclination.In some cases, even can expect that the shape with slightly recessed or slightly protruding constitutes the surface of each mirror.
In first embodiment, radiation mechanism comprises that the radiation source that is used to produce radiation and at least one are used for making along irradiation axis the concave mirror of radiation collimation directive polygon prism.Certainly, the alternative as making the radiation collimation irradiation can be provided with lens or lens combination.Radiation source can send light, for example visible light, ultraviolet light or infrared light, particularly near infrared light (NIR).Such was the case with selects for the wavelength of radiation, can optimal zone tell passing material and the impurity that will remove.At this moment, preferably can so carry out the collimated illumination of radiation, approximately when promptly it is on shining material stream be point-like, perhaps the cross section of radiation has the one extension at least in the order of magnitude of particle to be detected.So, the impurity during accurately locator material flows.
For example, electromagnetic sensor independent or array or photoelectric sensor can be used as sensor (for example, being exactly single-sensor or matrix sensor).
Radiation mechanism also preferably includes back reflector, and by back reflector, the posterior components of radiation can be drawn towards or reflect to this concave mirror.Here, back reflector can be preferably also constitutes according to the mode of concave mirror.Except light pack function, back reflector also has the following advantages, and promptly sensor device is placed in time of being produced by back reflector in the shadow.Like this, protect sensor device, make it not be subjected to influence because of the interference emission that the radiation source direct irradiation brings by simple mode.
Also maybe advantageously, back reflector is positioned between sensor device and the concave mirror, and wherein the distance D 1 between the sensor of this sensor device inlet and the radiation source is less than the distance D between radiation source and the concave mirror 2.Sensor inlet for example can be by being configured in sensor device the lens of front end limit.Can be especially preferred following measure, D1 is less than 0.9D2, and preferably less than 0.75D2, special preferably approximately is 2/3 of D2.
Also maybe advantageously, back reflector roughly is close to the radiation source arrangement.Under with the situation of spot light as radiation source, the distance D 3 between back reflector and the spot light for example can be less than 20 millimeters.Radiation source is between concave mirror and back reflector, and here, back reflector preferably is close to radiation source and settles.
Maybe advantageously, radiation source is the Halogen lamp LED with filament.Such lamp very well is suitable for and makes spot light.Certainly, also can adopt other lamp or other radiation source.
Distance D 3 between the back reflector of radiation source and concave mirror shape spherical in shape is roughly corresponding to the radius of this concave mirror.
The reflecting surface of the minute surface of polygon prism, the reflecting surface of concave mirror and/or back reflector can be silver-plated, aluminize or gold-plated.But, also can expect other reflective metal surface.Therefore, especially preferred gold-plated surface, this is because gold-plated surface has chemical resistance, even and if under abominable external environmental condition, (not tarnishing) also plays a role.
If each minute surface of polygon prism is furnished with polaroid filter, and preferably so be equipped with, promptly each minute surface has different polarization directions, then can obtain further advantage.Mirror wheel for example can have five single mirrors, and one of them single mirror does not have polaroid filter, and other four single mirrors are furnished with a different polaroid filter respectively.The rotary speed of mirror wheel can so be selected, promptly respectively with the delegation in the different polarization direction scanning material stream.Can obviously improve whereby the impurity detection recognition capability of plastic film particularly.
Obtain the preferred disposition structure of detecting unit in this device in the following cases, the device that is made of radiation mechanism and sensor device so is placed in and is used to observation passage that material stream is passed, promptly transmits with acute angle of inclination from radiation mechanism and by the upside of the radiation of polygon prism deflection along the observation passage.At this moment, the inclination angle can be preferably less than 10 °, particularly preferably less than 5 °.Certainly, also can be parallel to observation passage upside ground transmission (inclination angle will be 0) by the radiation of polygon prism deflection.For deflection of radiation is flowed to material, the plane deviation mirror can be set.Like this from polygon prism or to the characteristics of the indirec radiation of polygon prism guiding be take up an area of very little.Whole detecting unit can quite be put down and is installed on the observation passage flatly.By the plane deviation mirror, so deflection radiation, i.e. radiation be approximate upside with observation passage in the right angle photograph in side view.
Can light shield be set in the front of sensor device, can stop thus sensor device be subjected to because of reflection on polygon prism directly from the influence of the radiation of radiation mechanism.Light shield can be positioned at the front of sensor device about irradiation axis on the polygon prism direction.In addition, light shield can roughly directly be connected with the lens of limit sensor device front end.The cross section of light shield or light shield can constitute according to wedge-type shape in side view, here, the angle of wedge can be roughly corresponding to detecting unit, by the deflection angle of polygon prism regulation.
Can filter be set in the place ahead of one or more sensors of sensor device, to determine spectral region.
In another embodiment, polygon prism can be driven by motor, and motor can be preferably constitutes with the form of outer rotor motor.In the case, a plurality of minute surfaces of polygon prism are attached troops to a unit in outer rotor.In this way, this drive motor can be incorporated in the polygon prism simply.
Also maybe advantageously, sensor device comprises the sensor of one or more based semiconductors.
In order to cool off, sensor device can be equipped with the peltier effect element of at least one heat transmission, and perhaps additionally is equipped with or is equipped with to scheme as an alternative heat transmission ventilating mechanisms (as heat pipe).Because sensor device directly is configured in the light beam, so cooling may be necessary, no matter selected which type of sensor.Preferably the Halogen lamp LED as light source sends its most of energy with the form of heat, and this produces adverse influence to sensor device.
When radiation mechanism and sensor device limited a detecting unit, this device comprised that at least two detecting units may be favourable.At this moment, these detecting units can so be installed, and promptly material stream can be divided into two capable being scanned of laterally staggering mutually on identical height.At this moment, the best throughput direction about material stream of this two row is spaced from each other.
At least two detecting units can be installed side by side about the throughput direction of material stream, here, can scan whole passage area or only distinguish the sweep test zone with each detecting unit.Distribute by such scanning area, can improve the verification and measurement ratio of the impurity in the identification material stream by plain mode.
Material stream can certainly be carried by other conveying mechanism (as on conveyer belt), rather than by showing passage.
Also maybe advantageously, material stream can be carried by showing passage with pneumatic mode, and this device has at least two detecting units.At this moment, these two detecting units can be arranged on the same side or relative both sides of showing passage.
May very advantageously be that described at least two detecting units are arranged on the relative both sides of showing passage and the throughput direction that flows about material staggers mutually this moment.Such duplex configuration structure has guaranteed high edulcoration rate, and the mutual interference of detecting unit phase can not occur.
Described device can comprise such displaying passage, and promptly the front side of this displaying passage can be saturating for radiation radiation mechanism, directive material stream.With the front side opposed rear side, the background that so is matched with the passing material in the material stream can be set in showing passage, promptly when background is reflective, identical detection signal in the time of producing with the detection passing material.Therefore, can get rid of the wrong detection that causes by rear side in this way.
Also maybe advantageously, observe the zone passage upside, that be exposed under the irradiation form at least by transparent disk.The posterior region that is exposed under the irradiation also preferably forms by the disk that is made of transparent material, and above-mentioned background can be arranged in the back of this disk.
Description of drawings
To the explanation of embodiment and from accompanying drawing, obtained other concrete feature and advantage of the present invention from following, wherein:
Fig. 1 is the schematic diagram of the high level overview of expression apparatus of the present invention;
Fig. 2 is the perspective view that expression is used for the basic structure of Device Testing unit;
Fig. 3 is the vertical view that expression is placed in the detecting unit of Gong the choosing of observing the passage top;
Fig. 4 is the side view of expression according to the detecting unit of Fig. 3;
Fig. 5 a little at length shows the detecting unit according to Fig. 4;
Fig. 6 is the amplification view of expression according to the radiation mechanism of the detecting unit of Fig. 5;
Fig. 7 is the rough schematic that expression is used for the sensor device of detecting unit;
Fig. 8 represents to show the cross section of passage;
Fig. 9 is the schematic diagram that expression has the displaying passage of the polygon prism that belongs to detecting unit;
Figure 10 represents to have the observation passage of two polygon prisms, these two polygon prisms be configured on the relative both sides and each polygon prism corresponding to a detecting unit;
Figure 11 represents to have another configuration structure (each is represented by polygon prism) of two detecting units, but two detecting units of this moment are configured in the same side and arranged side by side mutually;
Figure 12 be expression according to Figure 11, have a perspective view of the device of detecting unit arranged side by side each other.
The specific embodiment
Fig. 1 shows the device of representing with mark 1, is used for detecting and isolate the impurity at the former cotton material stream of pneumatic conveying.Detecting unit 2 that known basic structure itself mainly comprises the impurity that is used for test material stream and the separator 5 that effectively is connected with this detecting unit.Material stream is carried by transfer pipeline 6,, is provided with corresponding observation passage 7 here in the zone of detecting unit 2.
When detecting impurity, the corresponding true control signal that starts separator 5 that is converted into by analysis and processing unit 9.Now, the impurity that is detected is seen off by separator tube 18 or other discharge line, until its final waste material container (not shown) that arrives.In Fig. 1, separate and for example to utilize compressed air (representing) or directly by blowing out impurity or finishing by the operational deflection flashboard with compressed air source 23.But for the purpose of the present invention, any in principle being used for all is suitable at the separation method of the material of transfer pipeline 6 pneumatic conveyings stream.Certainly, following apparatus is not restricted to pneumatic conveyor.This device especially also is applicable to the cotton of carrying on conveyer belt with the web form or otherwise carry.
Fig. 2 represents to be used for the basic structure of detecting unit of the impurity of detection fibers material stream.As shown in the figure, radiation mechanism 3 and sensor device 4 are that coaxial front and back are arranged about optical illumination axle L.Radiation from radiation mechanism 3 is always flowed by the material of minute surface 17 deflections of the polygon prism 10 of a rotation in observation passage 19.For towards the guiding radiation of material stream ground, be provided with plane deviation mirror 20 and auxiliary mirror 21.Certainly, radiation also can be flowed to material by the direct deflection of polygon prism.Be directed to sensor device 4 by polygon prism 10 and lens in the opposite direction by material stream radiation reflected.Utilize such detecting unit 2, can be with minute line mode scanning material stream.Such row is represented by chain-dotted line.A feasible project organization of this detecting unit has been shown in subsequently Fig. 3 and Fig. 4.
As shown in Figure 3, radiation mechanism consists essentially of the radiation source 8 that is used to produce radiation, be used for the back reflector 12 that makes the concave mirror 11 of radiation collimation directive polygon prism 10 and directly be placed in radiation source 8 back along optical illumination axle L, by back reflector 12, the rear section of radiation can be directed to concave mirror 11.The radiation path that flow to sensor device 4 from material is represented with thick line and arrow.As Fig. 3 and particularly Fig. 4 and shown in Figure 5, radiation not necessarily is the radiation of point-like in the cross section.Cross section has radiation beam little expansion, that preferably have an expansion of roughly rounded cross section and also can be used as radiation.As shown in the figure, be concentric but reciprocal from the radiation of radiation mechanism and the radiation of directive sensor device.Therefore, the central plane (L among Fig. 3) that has produced relative observation passage is the detecting unit structure of symmetry.Radiation can be visible light, ultraviolet light or infrared ray.In the cotton Application Areas, proved that near infrared ray (NIR, about 800 nanometers～2500 nanometers) is favourable.
In the embodiment according to Fig. 3, the maximum deflection that detects radiation approximately is 45 °.Pentamirror wheel with five minute surfaces 17 is as polygon prism 10.As shown in Figure 3, the scanning area of this scanning element generally should be corresponding to the channel width of observation passage 19.Each minute surface 17 is determined a scan line respectively.
From the side view of Fig. 4, can see, from transmitting along upside 22 with acute angle of inclination α to the radiation of polygon prism 10 of radiation mechanism by the radiation of polygon prism 10 deflections or by the reflection of material stream particle.Here, inclined angle alpha is about 9 °.The face normal slope one angle γ (R is the rotation of polygon prism 10) that is prismatic polygon prism 10 relative upsides 22.Also in side view, comprise that the configuration of concave mirror 11, radiation source 8, back reflector 2 and sensor device 4 is in tilted layout.Be provided with roughly tilt 45 ° plane deviation mirror 20 of relative upside 22, be used to make deflection of radiation, thereby the guiding radiation is almost vertically through zone 22 ' this upside, that formed by transparent disk along the upside transmission.Flat flat layout by detecting unit and since radiation just be directed to material stream, so structural volume can advantageously be minimized generally only directly in observation passage 19 time.Back reflector 12 is placed between sensor device 4 and the concave mirror 11, and the distance D 1 between the sensor of sensor device 4 inlet and the radiation source 8 is less than the distance D 2 between radiation source 8 and the concave mirror 11.
As shown in Figure 5, detecting unit, be installed on the supporting disk 31 according to a plurality of members that are arranged in a row before and after the order of concave mirror 11-radiation source 8-back reflector 12-sensor device 4 and polygon prism 10 about optical illumination axle L.Can be installed on the wedge 30 in a side around the polygon prism of rotation R rotation, wedge 30 is fastened to again on the supporting disk 31.Detecting unit can be installed in advance by plain mode.Certainly, when replacing prism shape mirror wheel to adopt the prismoid shape mirror wheel that its rotation R arranges perpendicular to supporting disk 31, can save wedge 30 in this embodiment.
Be provided with lens 26 in the front of sensor device, the front end of this lens limit sensor device.Just be provided with light shield 13, stop from the radiation of radiation mechanism by light shield 13 and directly inject sensor device 4 because of reflection on polygon prism 10 in the place ahead of lens 26.As shown in the figure, the cross section wedgewise of light shield 13, its angle of wedge are roughly corresponding to the deflection angle of radiation on polygon prism 10.
Fig. 5 also shows, and is transmission with one heart but reciprocally corresponding to irradiation and the radiation (representing with arrow) that detects.The reflecting surface of the minute surface 17 of polygon prism 10, the reflecting surface of concave mirror 11 and back reflector 12 all is coated with gold.For example, as drive unit, adopt the electronic rectifier type outer rotor motor that is incorporated in the polygon prism 10.
Can preferably adopt the light sensor of based semiconductor.In order to dispel the heat, sensor device 4 can be equipped with at least one peltier effect element (not shown).This sensor device also so constitutes, and gets final product so that air flow is flowed through electric electronic element.
As shown in Figure 6, compare with the distance D 2 to concave mirror 11, radiation source 8 is close to mutually with back reflector 12.Distance D 3 for example is about 15mm.The radius r of the back reflector 12 of concave mirror shape spherical in shape is 15mm in this embodiment equally.In other words, the distance D 3 between the back reflector 12 of radiation source 8 and concave mirror shape spherical in shape is corresponding to the radius r of concave mirror 11.Radiation source 8 constitutes with the spot light form, and here, this light source for example can be the Halogen lamp LED with filament 27.Concave mirror 11 constitutes with the form of elliposoidal concave mirror, its objective is by polygon prism will focus on from the light as much as possible of Halogen lamp LED on the material stream.
Fig. 7 represents sensor device 4, and wherein radiation scioptics 26 are directed to dielectric beamsplitter, and this dielectric beamsplitter guides to sensor 15 with a part of radiation, and another part radiation is guided to sensor 16.In order to determine spectral region, be provided with filter 28 and 29 in the place ahead of sensor 15 and 16 respectively.Also a sensor can only be set, replace having the structure of two sensors.
Show rectangular observation passage according to the cross sectional representation (along the cross section of scanning area or scan line, e represents material stream throughput direction) of the observation passage 19 of Fig. 8 and be lined with special background in three sides.Incident radiation and reflected radiation are represented with arrow.Not only upside 22 ' and rear side 25 ' are made of sheet glass, and also are made of by sheet glass the avris of 37 expressions.Not only in the back of rear side 25 ', and in the back of lateral plate 37, all dispose cotton layer as a setting 36.Therefore, even radiation is flowed particle less than material in shining, detecting unit also can provide correct signal.Therefore when background reflectance, identical detection signal when having produced the passing material that flows with test material.
Figure 10 and Figure 11 schematically illustrate the configuration structure with two detecting units, and these two detecting units only use the polygon prism 10 and 10 ' under it to represent.Here, a radiation mechanism and a sensor device limit a detecting unit.In order to contrast the embodiment that it is polygon prism 10 that Fig. 9 represents only have a detecting unit.
In Figure 10, detecting unit is configured on the relative both sides of showing passage 19.Detecting unit or polygon prism 10,10 ' can be arranged mutually about the throughput direction e of material stream with staggering, can flow by the scanning material in two row that stagger mutually thus.But this staggering not is always to need.
Figure 11 schematically illustrates two detecting units, and they are arranged side by side (nothing staggers) about the throughput direction of material stream,, can scan a subregion respectively with each detecting unit or with each polygon prism 10,10 ' here.The overlapping region of being represented by ü in Figure 11 can be chosen wantonly, perhaps also can save.
Figure 12 represent according in Figure 11 configuration structure, have a perspective view of the detection configuration structure of two detecting units 2 and 2 '.With Z and Z ' expression row, with this can scan respectively material stream roughly half.As shown in the figure, this two row is overlapped.Certainly, according to the width of showing passage 19, also can adopt more than detecting unit two, that be arranged side by side about throughput direction e.At this moment, advantageously so constitute these detecting units, promptly overlapping in the overlay region by the subregion of side by side detecting unit scanning.
Claims (19)
1. one kind is used for detecting the also device of removing foreign matter from the material stream of fibrous material, have: at least one is used for the sensor device (4) that the radiation mechanism (3) of this material of irradiation stream and at least one are used to detect the irradiated impurity that this material flows, wherein for this material stream of minute line scanning, be provided with rotatable polygon prism (10), utilize this polygon prism, the radiant energy of this radiation mechanism (3) is deflected to this material stream and by this material stream radiation reflected and can be deflected to this sensor device (4); Separator (5) effectively is connected with this sensor device (4), is used to isolate detected impurity, it is characterized in that, this radiation mechanism (3) and this sensor device (4) are that coaxial front and back are arranged about optical illumination axle (L).
2. device as claimed in claim 1 is characterized in that, this radiation mechanism (3) comprises that the radiation source (8) that is used to produce radiation and at least one are used for making along this irradiation axis (L) concave mirror (11) of this polygon prism of radiation collimation directive (10).
3. device as claimed in claim 2 is characterized in that, this radiation mechanism (3) also comprises back reflector (12), and by this back reflector, the rear section of radiation can be directed to this concave mirror (11).
4. device as claimed in claim 3 is characterized in that this back reflector is the concave mirror shape.
5. device as claimed in claim 2 is characterized in that, this radiation source (8) is the Halogen lamp LED with filament (27), is used to form spot light.
6. device as claimed in claim 4 is characterized in that, the distance (D3) between this back reflector (12) of this radiation source (8) and concave mirror shape spherical in shape is roughly corresponding to the radius (r) of this concave mirror (12).
7. as each described device in the claim 1 to 6, it is characterized in that, the configuration structure that comprises this radiation mechanism (3) and this sensor device (4) is placed in the following manner and is used to observation passage (19) that this material stream is passed, this radiation mechanism, roughly parallel or transmit with acute angle of inclination (α) along the upside (22) of this observation passage (19) with the upside (22) of this observation passage (19) by the radiation of this polygon prism deflection, and be provided with plane deviation mirror (20) and be used to make deflection of radiation to this material stream.
8. as each described device in the claim 1 to 6, it is characterized in that, be provided with light shield (13) in the place ahead of this sensor device (4).
9. as each described device in the claim 1 to 6, it is characterized in that, be provided with filter (28,29), be used for determining spectral region in the place ahead of the sensor (15,16) of this sensor device (4).
10. as each described device in the claim 1 to 6, it is characterized in that this polygon prism (10) can be driven by motor (14).
11. device as claimed in claim 10 is characterized in that, this motor is the form of outer rotor motor, and wherein a plurality of minute surfaces (17) of this polygon prism (10) are corresponding to this outer rotor.
12., it is characterized in that this sensor device (4) comprises the sensor of based semiconductor as each described device in the claim 1 to 6.
13., it is characterized in that this sensor device (4) is equipped with at least one peltier effect element that is used to dispel the heat as each described device in the claim 1 to 6.
14. as each described device in the claim 1 to 6, wherein this radiation mechanism (3) and this sensor device (4) limit a detecting unit (2), this material stream is by showing passage (7,19) carry, it is characterized in that, this device comprises at least two detecting units (2), and described at least two detecting units (2) are placed on the same side or relative both sides of described displaying passage (7).
15. device as claimed in claim 14 is characterized in that, this material stream is carried by showing passage with pneumatic mode.
16. device as claimed in claim 14 is characterized in that, described at least two detecting units (2,2 ') are settled side by side about the throughput direction of this material stream, wherein can utilize each detecting unit (2,2 ') to scan a subregion respectively.
17. device as claimed in claim 16 is characterized in that, described at least two detecting units (2,2 ') design in the following manner, and the subregion of described detecting unit (2,2 ') side by side is overlapping in overlapping region (ü).
18. device as claimed in claim 14 is characterized in that, described at least two detecting units (2) are arranged on the relative both sides of this displaying passage (7) and arrange mutually about the throughput direction of this material stream with staggering.
19. device according to claim 13 is characterized in that, this sensor device (4) is equipped with the replacement means that are used to dispel the heat.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP20070003699 EP1961848B1 (en) | 2007-02-23 | 2007-02-23 | Device for detecting and removing foreign matter |
| EP07003699.1 | 2007-02-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101250772A CN101250772A (en) | 2008-08-27 |
| CN101250772B true CN101250772B (en) | 2011-06-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100072841A Expired - Fee Related CN101250772B (en) | 2007-02-23 | 2008-02-22 | Device for detecting and removing foreign matter |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1961848B1 (en) |
| CN (1) | CN101250772B (en) |
| DE (1) | DE502007004383D1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101968453B (en) * | 2009-12-01 | 2012-05-09 | 北京理工大学 | Polarization detection method and device for white and colorless foreign matters in cotton |
| CN102621147A (en) * | 2012-03-09 | 2012-08-01 | 武汉钢铁工程技术集团有限责任公司 | Steel plate surface color difference defect detecting device |
| CN105887251A (en) * | 2016-06-16 | 2016-08-24 | 新疆利华棉业股份有限公司 | CCD electronic imaging foreign fiber separation system |
| WO2023285879A1 (en) * | 2021-07-14 | 2023-01-19 | Premier Evolvics Private Limited | Device and method for detecting contaminants in a textile material |
| CH720486A1 (en) * | 2023-02-08 | 2024-08-15 | Uster Technologies Ag | Investigation of a textile fiber structure containing two components |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2129038A1 (en) * | 1971-06-11 | 1972-12-21 | Licentia Gmbh | Device for testing moving material tracks or curves |
| CN1173557A (en) * | 1996-08-08 | 1998-02-18 | 特鲁菲舍尔股份有限公司及两合公司 | Method and appts. for recognition and separation of impurities in ready equipment of spinning (opener) |
| DE29719245U1 (en) * | 1997-10-29 | 1998-03-12 | Jossi Holding Ag, Islikon | Device for recognizing and eliminating foreign substances in fiber material |
| CN1357656A (en) * | 2000-11-11 | 2002-07-10 | 休伯特·A·赫格特 | Air brak separation of inpurities |
| CN1696366A (en) * | 2004-05-12 | 2005-11-16 | 郭云生 | Special equipment for identifying and separating different colors of textile fibers |
-
2007
- 2007-02-23 DE DE200750004383 patent/DE502007004383D1/en active Active
- 2007-02-23 EP EP20070003699 patent/EP1961848B1/en not_active Not-in-force
-
2008
- 2008-02-22 CN CN2008100072841A patent/CN101250772B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2129038A1 (en) * | 1971-06-11 | 1972-12-21 | Licentia Gmbh | Device for testing moving material tracks or curves |
| CN1173557A (en) * | 1996-08-08 | 1998-02-18 | 特鲁菲舍尔股份有限公司及两合公司 | Method and appts. for recognition and separation of impurities in ready equipment of spinning (opener) |
| DE29719245U1 (en) * | 1997-10-29 | 1998-03-12 | Jossi Holding Ag, Islikon | Device for recognizing and eliminating foreign substances in fiber material |
| CN1357656A (en) * | 2000-11-11 | 2002-07-10 | 休伯特·A·赫格特 | Air brak separation of inpurities |
| CN1696366A (en) * | 2004-05-12 | 2005-11-16 | 郭云生 | Special equipment for identifying and separating different colors of textile fibers |
Also Published As
| Publication number | Publication date |
|---|---|
| DE502007004383D1 (en) | 2010-08-26 |
| EP1961848B1 (en) | 2010-07-14 |
| EP1961848A1 (en) | 2008-08-27 |
| CN101250772A (en) | 2008-08-27 |
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