CN104198508A - Food heavy metal detection instrument with light filter switching function - Google Patents
Food heavy metal detection instrument with light filter switching function Download PDFInfo
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- CN104198508A CN104198508A CN201410467896.4A CN201410467896A CN104198508A CN 104198508 A CN104198508 A CN 104198508A CN 201410467896 A CN201410467896 A CN 201410467896A CN 104198508 A CN104198508 A CN 104198508A
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Abstract
The invention discloses a food heavy metal detection instrument with a light filter switching function. The food heavy metal detection instrument comprises a light filter switching device, an X-ray path detection chamber device, an X-ray tube assembly, a detector assembly and a top cover, wherein the light filter switching device is mounted on a sample cavity positioning plate; the sample cavity positioning plate is connected with the light filter switching device and the food heavy metal detection instrument. According to the food heavy metal detection instrument, a detection chamber is integrally formed, the X-ray tube and detector assemblies are positioned through mounting through holes formed in two sides, and the length of an original chamber is reduced, so that a detected sample is relatively close to an X-ray tube and a detector and the X-ray exciting and receiving efficiency is greatly improved; due to an ultra-small cavity body platform, the sample test distance can be ultra-short and the sample test accuracy can be improved; meanwhile, due to the technical scheme, a plurality of samples can be subjected to automatic switchover detection, so that the time for testing different samples is saved and the working efficiency of the whole instrument is improved.
Description
Technical field
The present invention relates to food heavy metal fast detecting field, specifically, relate to a kind of food heavy metal detector with optical filter handoff functionality.
Background technology
The middle national expenditures world 9% less than arable land supported the population in the world 20%, huge grain-production pressure is never cleared up, and the new sorrow of grain security is comed one after another.Studies show that according to one of the Chinese Academy of Sciences, at present China is subject to nearly 20,000,000 hectares of the cultivated area of the heavy metal pollutions such as cadmium, arsenic, chromium, lead, and consumer's healthy and life security has been subjected to serious threat.So improve food inspection system, control heavy metal pollution arrived instant stage.Traditional detection is single box sample and is single-element detection, can cause like this and change the time waste that brings of sample and the increase of labour intensity, tradition power spectrum instrument is because sample is from the distance of X-ray tube and detector, and affect exciting and receiving efficiency of instrument, realize and switch object by the mode of manual replacing optical filter simultaneously, so greatly waste the test duration, be therefore necessary to find a kind of sample detection instrument that can Multi-example detects again the convenience and high-efficiency can multielement detecting.
Summary of the invention
In view of this, need to overcome at least one in above-mentioned defect of the prior art.The invention provides a kind of food heavy metal detector with optical filter handoff functionality, comprising:
Switching device of optical fiber, comprises supporting seat; Propulsion system, comprise motor, motor base, and described motor is arranged on described motor base, and described motor base is arranged on described supporting seat; Gearing, comprises connector, screw rod, and described connector one end and described motor output shaft are connected, and the other end and described screw rod are connected, and described screw rod is rotated under described electric machine rotation drives; Carriage, comprises slide rail, slide block, and described slide rail is arranged on described supporting seat, and described slide block is arranged on described slide rail, and described connector is fixedly connected on described slide block, and described slide block slides under the drive of described screw rod; Optical filter installing component, described optical filter installing component one end is fixedly connected on described slide block, and the other end has n optical filter installation position; Sensing device, comprises anti-dazzling screen, optoelectronic switch, and described anti-dazzling screen is arranged on slide block, and has n shading tooth, and described shading tooth position is corresponding with described optical filter installation position, and described optoelectronic switch is arranged on described supporting seat;
X-ray road detection cavity chamber device, described X-ray road detection cavity chamber device is unitary construction, and inside is useful on carries out X-ray detection chamber, and both sides are useful on the installation through hole of installation component, and sample table top is arranged at top;
X-ray tube component, comprises X-ray tube, fixed head, light pipe clip, spacing fixed part, and the light pipe that described X-ray tube is fixedly mounted on described X-ray road detection cavity chamber device one side by described fixed head is installed through hole, and described X-ray tube bottom is circular arc type; Described light pipe clip has stiff end and movable end, described stiff end is arranged on described fixed head, described movable end is stuck in described X-ray tube bottom shape and encircles type, described movable end place limited location fixed via, described spacing fixed part fixes described X-ray tube by described spacing fixed via;
Detector assembly, comprises detector, isolation flange, securing member, and described detector and described isolation flange are fixedly connected, and is arranged on the detector installation through hole of described X-ray road detection cavity chamber device opposite side by described isolation flange; Described securing member is fixedly connected described detector assembly on the detection cavity chamber device of described X-ray road by the fastening through-hole on described isolation flange;
Top cover, described top cover connects with described sample table top, the built-in sheet lead of described top cover;
Described switching device of optical fiber is arranged on sample cavity location-plate, and described sample cavity location-plate connects described switching device of optical fiber and described food heavy metal detector.
According to the present invention in background technology to described in prior art, traditional power spectrum instrument is because sample has affected exciting of instrument and receiving efficiency from the distance of X-ray tube and detector; Traditional power spectrum instrument optical filter that can not automatically switch, but realize and switch object by the mode of manual replacing optical filter, the test duration so greatly wasted; And the present invention is by carrying out detection chambers global formation, the installation through hole forming by both sides is located X-ray tube and detector assembly, shorten original chamber length, make sample distance X ray tube and detector nearer, exciting with receiving efficiency of X-ray improved greatly, this kind of extra small cavity platform ensured super near sample test distance, can improve the degree of accuracy of test sample; Meanwhile, the automatic switchover that this technical scheme can be carried out multiple samples detects, and has saved the time of testing different samples, has improved the work efficiency of whole instrument.
In addition, also there is following additional technical feature according to the food heavy metal detector with optical filter handoff functionality disclosed by the invention:
Further, described X-ray road detection cavity chamber device comprises sample cavity location-plate, and described X-ray assembly is fixedly mounted on described sample cavity location-plate by described fixed head.
Further, described fixed head is two, be fixedly connected respectively in the both sides of described X-ray tube.
Further, described spacing fixed part is bolt, and described spacing fixed via is the threaded hole coordinating with described bolt.
Further, described spacing fixed part tool end springy, described X-ray tube is withstood in described end.
Further, described securing member is screw, and described fastening through-hole is and the screw hole of described screw fit.
Further, described top cover connects by the support of rotating shaft or gas or above-mentioned both combinations.
Further, described single collimation food heavy metal detector also comprises box assembly, described X-ray road detection cavity chamber device, described x-ray tube component, described detector assembly, described top cover is arranged in described box assembly, and described box assembly also comprises case component, signal lamp, key switch etc.
Further, described single collimation food heavy metal detector also comprises cooling device, and described cooling device comprises the parts such as light path air channel, fan.
Further, described optical filter installing component is optical filter installing plate, by two rectangular intersecting to form, has certain angle.
Further, the angle ranging from 90 degree.
Further, described carriage comprises slideway and slide block.
Further, described n is 3.
The aspect that the present invention is additional and advantage in the following description part provide, and part will become obviously from the following description, or recognize by practice of the present invention.
Brief description of the drawings
Above-mentioned and/or additional aspect of the present invention and advantage will become obviously and easily from the following description of the accompanying drawings of embodiments to be understood, wherein:
Fig. 1 is switching device shifter module composition schematic diagram of the present invention;
Fig. 2 is switching device shifter anti-dazzling screen position view of the present invention;
Fig. 3 is that light path of the present invention is just being shown schematic diagram;
Fig. 4 is that light path A-A of the present invention cuts open and shows schematic diagram;
Fig. 5 is light path of the present invention air channel schematic diagram;
Fig. 6 is overall appearance schematic diagram of the present invention;
Wherein, 1, slide rail 2, slide block 3, cross recessed countersunk head sscrew 4, hexagon socket cap head screw 5, optoelectronic switch seat 6, optoelectronic switch 7, motor 8, motor base 9, Cross Recess Head Screw 10, Cross Recess Head Screw 11, Miniature ball linear slide rail 12, anti-dazzling screen 13, cross recess round head screw 14, optical filter installing plate 15 screw rods 16, net circle 17, cavity 18, sample cavity location-plate 19, detector isolation flange 20, detector assembly 21, deep bead 22, collimating apparatus 23, bulb plunger 24, X-ray tube 25, light pipe blower tray 26, the right fixed head 27 of light pipe, light pipe clip 28, the left fixed head 29 of light pipe, Cross Recess Head Screw 30, fan 31, fan guard 32, crossed pan head screw 33, bolt 34, case component 35, signal lamp 36, case ring (little) 37, signal lamp case ring (greatly) 38, key switch 39, high pressure lock case ring 40, gas support
Embodiment
Embodiment described below is exemplary, only for explaining the present invention, and can not be interpreted as limitation of the present invention.
Describe below with reference to accompanying drawings the food heavy metal detector with optical filter handoff functionality of the present invention, wherein Fig. 1 is switching device shifter module composition schematic diagram of the present invention; Fig. 2 is switching device shifter anti-dazzling screen position view of the present invention; Fig. 3 is that light path of the present invention is cutd open and shown schematic diagram; Fig. 4 is that light path of the present invention is just being shown schematic diagram; Fig. 5 is light path of the present invention air channel schematic diagram; Fig. 6 is overall appearance schematic diagram of the present invention.
According to embodiments of the invention, as shown in Fig. 1-6, the food heavy metal detector of optical filter handoff functionality provided by the invention, comprising:
Switching device of optical fiber, as shown in Figure 1, 2, comprises supporting seat; Propulsion system, comprise motor 7, motor base 8, and described motor 7 is arranged on described motor base 8, and described motor base 8 is arranged on described supporting seat; Gearing, comprises connector, screw rod 15, and described connector one end and described motor 7 output shafts are connected, and the other end and described screw rod 15 are connected, and described screw rod 15 rotates under drive and is rotated at described motor 7; Carriage, comprises slide rail 1, slide block 2, and described slide rail 1 is arranged on described supporting seat, and described slide block 2 is arranged on described slide rail 1, and described connector is fixedly connected on described slide block 2, and described slide block 2 is slided under the drive of described screw rod 5
Moving; Optical filter installing component, described optical filter installing component one end is fixedly connected on described slide block, and the other end has n optical filter installation position; Sensing device, comprises anti-dazzling screen 12, optoelectronic switch 6, and described anti-dazzling screen 12 is arranged on slide block 2, and has n shading tooth, and described shading tooth position is corresponding with described optical filter 12 installation positions, and described optoelectronic switch 6 is arranged on described supporting seat.
X-ray road detection cavity chamber device, described X-ray road detection cavity chamber device is unitary construction, and inside is useful on carries out X-ray detection chamber, and both sides are useful on the installation through hole of installation component, and sample table top is arranged at top;
X-ray tube component, as shown in Figure 4, comprise X-ray tube 24, fixed head (26,28), light pipe clip 27, spacing fixed part, the light pipe that described X-ray tube 24 is fixedly mounted on described X-ray road detection cavity chamber device one side by described fixed head (26,28) is installed through hole, and described X-ray tube 24 bottoms are circular arc type; Described light pipe clip 27 has stiff end and movable end, described stiff end is arranged on described fixed head (26,28), described movable end is stuck in described X-ray tube 24 bottom shapes and encircles type, described movable end place limited location fixed via, described spacing fixed part fixes described X-ray tube 24 by described spacing fixed via;
Detector assembly 20, as shown in Figure 4, comprise detector, isolation flange 19, securing member, described detector and described isolation flange 19 are fixedly connected, and the detector that is arranged on described X-ray road detection cavity chamber device opposite side by described isolation flange 19 is installed through hole; Described securing member is fixedly connected described detector assembly on the detection cavity chamber device of described X-ray road by the fastening through-hole on described isolation flange 19;
Top cover, described top cover connects with described sample table top, the built-in sheet lead of described top cover;
Described switching device of optical fiber is arranged on sample cavity location-plate 18, and described sample cavity location-plate 18 connects described switching device of optical fiber and described food heavy metal detector.
According to the present invention in background technology to described in prior art, traditional power spectrum instrument is because sample has affected exciting of instrument and receiving efficiency from the distance of X-ray tube and detector; Traditional power spectrum instrument optical filter that can not automatically switch, but realize and switch object by the mode of manual replacing optical filter, the test duration so greatly wasted; And the present invention is by carrying out detection chambers global formation, the installation through hole forming by both sides is located X-ray tube and detector assembly, shorten original chamber length, make sample distance X ray tube and detector nearer, exciting with receiving efficiency of X-ray improved greatly, this kind of extra small cavity platform ensured super near sample test distance, can improve the degree of accuracy of test sample; Meanwhile, the automatic switchover that this technical scheme can be carried out multiple samples detects, and has saved the time of testing different samples, has improved the work efficiency of whole instrument.
According to some embodiments of the present invention, described X-ray road detection cavity chamber device comprises sample cavity location-plate 18, and described X-ray assembly is fixedly mounted on described sample cavity location-plate 18 by described fixed head (26,28).
According to some embodiments of the present invention, described fixed head (26,28) is two, is fixedly connected respectively in the both sides of described X-ray tube.
According to some embodiments of the present invention, described spacing fixed part is bolt 33, and described spacing fixed via is the threaded hole coordinating with described bolt 33.
According to some embodiments of the present invention, described spacing fixed part tool end springy, described X-ray tube 24 is withstood in described end, to increase corresponding level pressure effect.
According to some embodiments of the present invention, described securing member is screw, and described fastening through-hole is and the screw hole of described screw fit.
According to some embodiments of the present invention, as shown in Figure 6, described top cover connects by the support 40 of rotating shaft or gas or above-mentioned both combinations.
According to some embodiments of the present invention, as shown in Figure 6, described single collimation food heavy metal detector also comprises box assembly, described X-ray road detection cavity chamber device, described x-ray tube component, described detector assembly, described top cover is arranged in described box assembly, and described box assembly also comprises case component 34, signal lamp 35, key switch 38 etc.
According to some embodiments of the present invention, as shown in Figure 6, described single collimation food heavy metal detector also comprises cooling device, and described cooling device comprises the parts such as light path air channel, fan 30.
According to some embodiments of the present invention, described optical filter installing component is optical filter installing plate, by two rectangular intersecting to form, has certain angle.
Further, the angle ranging from 90 degree.
According to some embodiments of the present invention, described carriage comprises slideway and slide block.
According to some embodiments of the present invention, described n is 3.
Although the specific embodiment of the present invention is described in detail with reference to multiple illustrative examples of the present invention, but it must be understood that, those skilled in the art can design multiple other improvement and embodiment, and these improve and within embodiment will drop on spirit and scope.Particularly, within the scope of aforementioned open, accompanying drawing and claim, can aspect the layout of parts and/or subordinate composite configuration, make rational modification and improvement, and can not depart from spirit of the present invention.Except modification and the improvement of parts and/or layout aspect, its scope is limited by claims and equivalent thereof.
Claims (11)
1. a food heavy metal detector with optical filter handoff functionality, is characterized in that, comprising:
Switching device of optical fiber, comprises supporting seat; Propulsion system, comprise motor, motor base, and described motor is arranged on described motor base, and described motor base is arranged on described supporting seat; Gearing, comprises connector, screw rod, and described connector one end and described motor output shaft are connected, and the other end and described screw rod are connected, and described screw rod is rotated under described electric machine rotation drives; Carriage, comprises slide rail, slide block, and described slide rail is arranged on described supporting seat, and described slide block is arranged on described slide rail, and described connector is fixedly connected on described slide block, and described slide block slides under the drive of described screw rod; Optical filter installing component, described optical filter installing component one end is fixedly connected on described slide block, and the other end has n optical filter installation position; Sensing device, comprises anti-dazzling screen, optoelectronic switch, and described anti-dazzling screen is arranged on slide block, and has n shading tooth, and described shading tooth position is corresponding with described optical filter installation position, and described optoelectronic switch is arranged on described supporting seat;
X-ray road detection cavity chamber device, described X-ray road detection cavity chamber device is unitary construction, and inside is useful on carries out X-ray detection chamber, and both sides are useful on the installation through hole of installation component, and sample table top is arranged at top;
X-ray tube component, comprises X-ray tube, fixed head, light pipe clip, spacing fixed part, and the light pipe that described X-ray tube is fixedly mounted on described X-ray road detection cavity chamber device one side by described fixed head is installed through hole, and described X-ray tube bottom is circular arc type; Described light pipe clip has stiff end and movable end, described stiff end is arranged on described fixed head, described movable end is stuck in described X-ray tube bottom shape and encircles type, described movable end place limited location fixed via, described spacing fixed part fixes described X-ray tube by described spacing fixed via;
Detector assembly, comprises detector, isolation flange, securing member, and described detector and described isolation flange are fixedly connected, and is arranged on the detector installation through hole of described X-ray road detection cavity chamber device opposite side by described isolation flange; Described securing member is fixedly connected described detector assembly on the detection cavity chamber device of described X-ray road by the fastening through-hole on described isolation flange;
Top cover, described top cover connects with described sample table top, the built-in sheet lead of described top cover;
Described switching device of optical fiber is arranged on sample cavity location-plate, and described sample cavity location-plate connects described switching device of optical fiber and described food heavy metal detector.
2. the food heavy metal detector with optical filter handoff functionality according to claim 1, it is characterized in that, described X-ray road detection cavity chamber device comprises sample cavity location-plate, and described X-ray assembly is fixedly mounted on described sample cavity location-plate by described fixed head.
3. the food heavy metal detector with optical filter handoff functionality according to claim 1, is characterized in that, described fixed head is two, is fixedly connected respectively in the both sides of described X-ray tube.
4. the food heavy metal detector with optical filter handoff functionality according to claim 1, is characterized in that, described spacing fixed part is bolt, and described spacing fixed via is the threaded hole coordinating with described bolt.
5. the food heavy metal detector with optical filter handoff functionality according to claim 1, is characterized in that, described spacing fixed part tool end springy, and described X-ray tube is withstood in described end.
6. the food heavy metal detector with optical filter handoff functionality according to claim 1, is characterized in that, described securing member is screw, and described fastening through-hole is and the screw hole of described screw fit.
7. the food heavy metal detector with optical filter handoff functionality according to claim 1, is characterized in that, described top cover supports by rotating shaft or gas or above-mentioned both combinations connect.
8. the food heavy metal detector with optical filter handoff functionality according to claim 1, it is characterized in that, the described food heavy metal detector with optical filter handoff functionality also comprises box assembly, described X-ray road detection cavity chamber device, described x-ray tube component, described detector assembly, described top cover is arranged in described box assembly.
9. the food heavy metal detector with optical filter handoff functionality according to claim 1, it is characterized in that, the described food heavy metal detector with optical filter handoff functionality also comprises cooling device, and described cooling device comprises the parts such as light path air channel, fan.
10. the food heavy metal detector with optical filter handoff functionality according to claim 1, is characterized in that, described optical filter installing component is optical filter installing plate, by two rectangular intersecting to form, has certain angle.
The 11. food heavy metal detectors with optical filter handoff functionality according to claim 1, is characterized in that, described n is 3.
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| CN201410467896.4A CN104198508B (en) | 2014-09-30 | 2014-09-30 | A kind of food heavy metal detector with optical filter handoff functionality |
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| CN201410467896.4A CN104198508B (en) | 2014-09-30 | 2014-09-30 | A kind of food heavy metal detector with optical filter handoff functionality |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107238621A (en) * | 2017-08-05 | 2017-10-10 | 深圳市华唯计量技术开发有限公司 | A kind of utilization total focus technology surveys the device of full constituent content |
| CN108132261A (en) * | 2018-02-05 | 2018-06-08 | 中国工程物理研究院激光聚变研究中心 | Flat response filter disc erecting device and flat response X-ray detector |
| CN109827982A (en) * | 2017-11-23 | 2019-05-31 | 核工业西南物理研究院 | A kind of fast detector of heavy metal-polluted soil detection |
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| Publication number | Publication date |
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| CN104198508B (en) | 2017-12-08 |
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