CN118817803B - Food heavy metal component detection device - Google Patents
Food heavy metal component detection device Download PDFInfo
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- CN118817803B CN118817803B CN202411288869.0A CN202411288869A CN118817803B CN 118817803 B CN118817803 B CN 118817803B CN 202411288869 A CN202411288869 A CN 202411288869A CN 118817803 B CN118817803 B CN 118817803B
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- 238000001514 detection method Methods 0.000 title claims abstract description 66
- 235000013305 food Nutrition 0.000 title claims abstract description 35
- 229910001385 heavy metal Inorganic materials 0.000 title claims abstract description 20
- 238000007667 floating Methods 0.000 claims description 41
- 238000003756 stirring Methods 0.000 claims description 25
- 230000009467 reduction Effects 0.000 claims description 8
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 6
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 6
- 241001330002 Bambuseae Species 0.000 claims description 6
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 6
- 239000011425 bamboo Substances 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 239000004615 ingredient Substances 0.000 claims 1
- 239000012488 sample solution Substances 0.000 abstract description 21
- 239000000523 sample Substances 0.000 abstract description 12
- 238000000034 method Methods 0.000 abstract description 10
- 238000001914 filtration Methods 0.000 abstract description 7
- 235000011389 fruit/vegetable juice Nutrition 0.000 abstract description 6
- 230000008569 process Effects 0.000 abstract description 6
- 238000007789 sealing Methods 0.000 abstract description 5
- 239000002904 solvent Substances 0.000 abstract description 5
- 229910052751 metal Inorganic materials 0.000 abstract description 3
- 239000002184 metal Substances 0.000 abstract description 3
- 238000002156 mixing Methods 0.000 abstract description 2
- 230000005389 magnetism Effects 0.000 abstract 1
- 230000006872 improvement Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 238000001479 atomic absorption spectroscopy Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000001095 inductively coupled plasma mass spectrometry Methods 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 238000004846 x-ray emission Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010794 food waste Substances 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 235000021404 traditional food Nutrition 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/28—Electrolytic cell components
- G01N27/30—Electrodes, e.g. test electrodes; Half-cells
- G01N27/333—Ion-selective electrodes or membranes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/34—Purifying; Cleaning
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/38—Diluting, dispersing or mixing samples
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Immunology (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Pathology (AREA)
- Molecular Biology (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
本发明涉及食品检测设备领域的一种食品重金属成分检测装置，通过安装有刀片的转动杆以及与转动杆连接的升降环，在对食品进行破碎时，刀片上下旋动对检测筒内的食品样品进行往复充分破碎，便于食品汁液与溶剂混合，提高后续检测的准确性；另外，通过设置在电极杆上方的过滤板以及用来封堵过滤板且用磁性驱动的封堵盘，在粉碎完成后，开启过滤板使得样品溶液流入电极杆所在腔体，实现样品溶液的过滤和快速转移，最后利用电极杆检测样品溶液内金属浓度并将结果显示在下盖外侧的显示屏上，自动化的完成重金属检测的全流程作业。
The present invention relates to a food heavy metal component detection device in the field of food detection equipment. Through a rotating rod equipped with a blade and a lifting ring connected to the rotating rod, when crushing food, the blade rotates up and down to reciprocate and fully crush the food sample in the detection tube, which is convenient for mixing food juice and solvent, and improves the accuracy of subsequent detection; in addition, through a filter plate arranged above an electrode rod and a sealing disk driven by magnetism for sealing the filter plate, after the crushing is completed, the filter plate is opened to allow the sample solution to flow into the cavity where the electrode rod is located, so as to achieve filtering and rapid transfer of the sample solution, and finally the electrode rod is used to detect the metal concentration in the sample solution and the result is displayed on a display screen outside a lower cover, so as to automatically complete the whole process of heavy metal detection.
Description
Technical Field
The invention relates to a detection device, in particular to a detection device for heavy metal components in food, which is applied to the field of food detection equipment.
Background
The detection of heavy metals in foods is an important link for ensuring the safety of foods, and in the detection process, common technologies include Atomic Absorption Spectrometry (AAS), inductively coupled plasma mass spectrometry (ICP-MS), X-ray fluorescence spectrometry (XRF) and the like, wherein the methods can accurately measure the content of heavy metal elements such as lead, mercury, cadmium and the like in the foods, even if the concentration of the elements in the foods is extremely low, the elements can be accurately detected, in addition, in order to ensure the accuracy of detection results, strict sample pretreatment steps such as digestion, dilution and the like are adopted to eliminate the influence of other components in the foods on the detection results, and standardized operation procedures and quality control measures are also used in the detection process to ensure the reliability and the repeatability of the detection results.
The existing food heavy metal detection method needs to crush, filter, stir and mix samples, transfer and detect records, relies on manual multi-step operation and is complex in operation.
Disclosure of Invention
Aiming at the prior art, the invention aims to solve the technical problems that the existing food heavy metal detection process needs to be manually and sequentially subjected to the procedures of crushing, filtering, stirring and mixing, transferring, detection and recording and the like, and has complicated operation.
In order to solve the problems, the invention provides a food heavy metal component detection device, which comprises a detection cylinder, wherein the upper end of the detection cylinder is detachably connected with an upper cover, the upper cover is fixedly connected with a fixed cylinder which extends into the detection cylinder, a rotating rod which extends to the lower part of the fixed cylinder is arranged in the fixed cylinder, the lower end of the rotating rod is fixedly connected with a blade, the rotating rod is inserted with an inserting shaft which is in sliding clamping connection with the rotating rod, the upper end of the inserting shaft extends into the upper cover and is connected with a driving motor through a coupling, and the driving motor drives the rotating rod and the blade connected with the rotating rod to rotate through the inserting shaft;
The upper end of the rotating rod is rotationally connected with a lifting ring which is nested in the fixed cylinder in a sliding way, the lifting ring is in threaded connection with a vertical screw rod which is arranged in the inner wall of the fixed cylinder, the vertical screw rod extends into the upper cover and is connected with the plug-in shaft through a reduction gear set for transmission, the plug-in shaft drives the vertical screw rod to rotate through the reduction gear set, the vertical screw rod drives the lifting ring to move up and down in the fixed cylinder, and the lifting ring drives the rotating rod and a blade arranged on the rotating rod to move up and down;
The lower end of the detection cylinder is detachably connected with a lower cover, the upper end of the lower cover is fixedly connected with a supporting frame, the supporting frame is fixedly connected with a filter plate, a plugging disc is abutted to the lower portion of the filter plate, the plugging disc is fixedly connected with a lifting cylinder, an electromagnetic cylinder which is in sliding connection with the lifting cylinder is nested in the lifting cylinder, a first magnetic ring is installed in the lifting cylinder, an electromagnetic coil which is matched with the first magnetic ring is installed in the electromagnetic cylinder, a limit spring abutted to the electromagnetic cylinder is nested in the lifting cylinder, the electromagnetic cylinder is fixedly connected with the supporting frame through a cross rod, the lower cover is fixedly connected with an electrode rod which extends into the detection cylinder, the electrode rod is connected with an electrode detector which is installed in the lower cover, and the electrode detector is connected with a display screen which is installed on the side wall of the lower cover.
In the food heavy metal component detection device, through the blades rotating up and down and the filter plate abutted with the plugging plate, the food sample is fully crushed and mixed, the sample solution is rapidly filtered and detected, and the operation is simplified.
As a further improvement of the invention, a floating plate is sleeved on the rotating rod above the blade in a sliding way, a prismatic hole matched with the rotating rod is arranged in the center of the floating plate, and a plurality of stirring plates are arranged on the lower end face of the floating plate.
As a further improvement of the invention, a second magnetic ring matched with the electromagnetic coil is arranged in the floating plate, and the second magnetic ring moves downwards when being magnetically attracted by the electromagnetic coil.
As a further improvement of the invention, the detection cylinder is a hollow cylinder with openings at the upper end and the lower end, the upper cover and the lower cover are fixedly connected with the detection cylinder in a threaded connection mode, and the detection cylinder is made of transparent plastic materials.
As a further improvement of the invention, the plug-in shaft is a prismatic rod with a regular polygon cross section, the rotary rod is provided with prismatic grooves matched with the plug-in shaft, the upper end of the rotary rod is provided with a rotary ring, and the lifting ring is provided with an annular groove for the rotary ring to rotate.
As a further improvement of the invention, a Hall sensor for monitoring the rotation number and the rotation position of an output shaft of the driving motor is arranged in the driving motor, a switch button for starting the driving motor is nested at the upper end of the upper cover, the electromagnetic coil is electrically connected with an electromagnetic driver, and the driving motor, the Hall sensor, the electrode detector, the electromagnetic driver, the display screen and the switch button are electrically connected with the controller.
As a further improvement of the invention, a limiting ring is arranged between the blade and the floating plate and is abutted with the floating plate.
As a further improvement of the invention, the cross section of the stirring plate is in a parallelogram shape, a nested groove for the sliding of the stirring plate is arranged in the floating plate, the upper end of the stirring plate is fixedly connected with a sliding column, a guide groove for the sliding column to slide is arranged in the nested groove, and the guide groove is an inclined groove and is parallel to the side edge of the stirring plate.
In addition, the filter plate arranged above the electrode rod and the magnetically-driven plugging disc are used for plugging the filter plate, after the crushing is finished, the filter plate is opened to enable sample solution to flow into a cavity where the electrode rod is positioned, filtering and rapid transfer of the sample solution are realized, finally, the electrode rod is used for detecting the metal concentration in the sample solution and displaying the result on a display screen at the outer side of the lower cover, and the whole flow operation of heavy metal detection is automatically finished.
Drawings
FIG. 1 is a schematic perspective view of the present application;
FIG. 2 is a schematic cross-sectional view of the present application;
FIG. 3 is an enlarged schematic view of FIG. 2A;
FIG. 4 is a schematic view showing the up-and-down rotation of the blade according to the present application;
FIG. 5 is an exploded view of the assembly of the rotating lever of the present application;
FIG. 6 is an enlarged schematic view of the structure shown at B in FIG. 2;
FIG. 7 is a schematic view showing the assembly of the filter plate and the lower cover in the present application;
FIG. 8 is a schematic cross-sectional view of the lower cover of the present application;
FIG. 9 is a schematic view of the assembly of the floating plate and the upper cover of the present application;
FIG. 10 is a schematic view of the assembly of the floating plate and the rotating lever of the present application;
FIG. 11 is a schematic cross-sectional view of a floating plate according to the present application;
FIG. 12 is a schematic perspective view of an agitator plate according to the present application;
FIG. 13 is a schematic view showing a state where a sample solution is squeezed out under a floating plate in the present application.
The reference numerals in the figures illustrate:
1. The detection device comprises a detection cylinder, 2, an upper cover, 3, a lower cover, 4, a fixed cylinder, 5, a rotating rod, 501, a rotating ring, 502, a limiting ring, 6, a blade, 7, a plug-in shaft, 8, a driving motor, 9, a lifting ring, 10, a vertical screw rod, 11, a reduction gear set, 12, a supporting frame, 13, a filter plate, 14, a sealing disc, 15, a lifting cylinder, 16, an electromagnetic cylinder, 17, a limiting spring, 18, an electromagnetic coil, 19, a first magnetic ring, 20, an electrode rod, 21, an electrode detector, 22, an electromagnetic driver, 23, a display screen, 24, a controller, 25, a switch button, 26, a floating plate, 2601, a prismatic hole, 2602, a nested groove, 2603, a guide groove, 27, a stirring plate, 2701, a sliding column, 28, a second magnetic ring, 29 and an infrared distance sensor.
Detailed Description
2 Embodiments of the present application will be described in detail with reference to the accompanying drawings.
Embodiment 1:
Fig. 1-8 show a food heavy metal component detection device, which comprises a detection cylinder 1, wherein the upper end of the detection cylinder 1 is detachably connected with an upper cover 2, the upper cover 2 is fixedly connected with a fixed cylinder 4 extending into the detection cylinder 1, a rotating rod 5 extending to the lower part of the fixed cylinder 4 is arranged in the fixed cylinder 4, the lower end of the rotating rod 5 is fixedly connected with a blade 6, the rotating rod 5 is inserted with an inserting shaft 7 in sliding clamping connection with the rotating rod 5, the upper end of the inserting shaft 7 extends into the upper cover 2 and is connected with a driving motor 8 through a coupling, and the driving motor 8 drives the rotating rod 5 and the blade 6 connected with the rotating rod 5 to rotate through the inserting shaft 7;
The upper end of the rotating rod 5 is rotationally connected with a lifting ring 9 which is nested in the fixed cylinder 4 in a sliding way, the lifting ring 9 is in threaded connection with a vertical screw rod 10 which is arranged in the inner wall of the fixed cylinder 4, the vertical screw rod 10 extends into the upper cover 2 and is connected with the plug-in shaft 7 through a reduction gear set 11 for transmission, the plug-in shaft 7 drives the vertical screw rod 10 to rotate through the reduction gear set 11, the vertical screw rod 10 drives the lifting ring 9 to move up and down in the fixed cylinder 4, and the lifting ring 9 drives the rotating rod 5 and a blade 6 arranged on the rotating rod 5 to move up and down;
The lower end of the detection cylinder 1 is detachably connected with a lower cover 3, the upper end of the lower cover 3 is fixedly connected with a supporting frame 12, the supporting frame 12 is fixedly connected with a filter plate 13, a plugging disc 14 is abutted to the lower part of the filter plate 13, the plugging disc 14 is fixedly connected with a lifting cylinder 15, an electromagnetic cylinder 16 which is in sliding connection with the lifting cylinder 15 is nested in the lifting cylinder 15, a first magnetic ring 19 is installed in the lifting cylinder 15, an electromagnetic coil 18 matched with the first magnetic ring 19 is installed in the electromagnetic cylinder 16, a limit spring 17 abutted to the electromagnetic cylinder 16 is nested in the lifting cylinder 15, the electromagnetic cylinder 16 is fixedly connected with the supporting frame 12 through a transverse rod, the lower cover 3 is fixedly connected with an electrode rod 20 which extends into the detection cylinder 1, the electrode rod 20 is connected with an electrode detector 21 which is installed in the lower cover 3, and the electrode detector 21 is connected with a display screen 23 which is installed on the side wall of the lower cover 3.
Specifically, referring to fig. 2, 4 and 6, when detecting heavy metals in food, the method includes the following steps:
Opening the upper cover 2, putting the food sample and the solvent into the detection cylinder 1, and then closing the upper cover 2;
Starting a driving motor 8, wherein the driving motor 8 drives a rotating rod 5 to rotate through a plug-in shaft 7, the rotating rod 5 drives a blade 6 to rotate so as to crush food samples, and meanwhile, the plug-in shaft 7 drives a vertical screw rod 10 to rotate through a reduction gear set 11, the vertical screw rod 10 drives a lifting ring 9 to move up and down, the lifting ring 9 drives the rotating rod 5 to move up and down, and the rotating rod 5 drives the blade 6 to move up and down so that the blade 6 rotates up and down in the detection cylinder 1;
specifically, the blades 6 rotating up and down fully crush the sample, ensure that the juice of the sample is fully mixed with the solvent, and improve the detection accuracy;
Step three, filtering and transferring, namely after crushing, starting an electromagnetic coil 18, wherein the electromagnetic coil 18 magnetically adsorbs a first magnetic ring 19, the first magnetic ring 19 drives a lifting cylinder 15 to move downwards, and the lifting cylinder 15 drives a plugging disc 14 to be separated from a filter plate 13, so that a sample solution enters a cavity below through a filter hole of the filter plate 13;
And step four, detecting and displaying, namely starting an electrode detector 21, detecting the sample solution by the electrode detector 21 through the electrode rod 20, and detecting each activity of ions in the sample solution through the ion-selective electrode, so as to obtain the actual concentration of heavy metals in food.
Compared with the traditional food heavy metal detection device, the detection device has the advantages that when food is crushed, the rotating rod 5 provided with the blades 6 and the lifting ring 9 connected with the rotating rod 5 are used for fully crushing food samples in the detection cylinder 1 in a reciprocating manner by rotating the blades 6 up and down, so that food juice and solvent are convenient to mix, detection accuracy is improved, in addition, after crushing is finished, the filter plate 13 is opened through the filter plate 13 arranged above the electrode rod 20 and the sealing disc 14 is used for sealing the filter plate 13 and is magnetically driven, so that sample solution flows into a cavity where the electrode rod 20 is positioned, filtration and rapid transfer of the sample solution are realized, the operation is simple, finally, the concentration of metal in the sample solution is detected by using the electrode rod 20 and a result is displayed on the display screen 23 outside the lower cover 3, and the operation is rapid.
Referring to fig. 2, a detection cylinder 1 is a hollow cylinder with openings at the upper end and the lower end, an upper cover 2 and a lower cover 3 are fixedly connected with the detection cylinder 1 in a threaded connection manner, and the detection cylinder 1 is made of transparent plastic materials.
Specifically, the crushing and the testing process of food in the detection section of thick bamboo 1 are conveniently observed, visual operation is realized, the operation degree of difficulty is reduced, and convenient upper cover 2 and lower cover 3 are dismantled fast, and the blade subassembly is installed on upper cover 2, and the detection subassembly is installed on lower cover 3, is convenient for wash and dry.
Referring to fig. 4 and 5, the plugging shaft 7 is a prismatic rod with a regular polygon cross section, the rotating rod 5 is provided with prismatic grooves matched with the plugging shaft 7, the upper end of the rotating rod 5 is provided with a rotating ring 501, and the lifting ring 9 is provided with an annular groove for the rotating ring 501 to rotate.
Specifically, the plug-in shaft 7 is inserted into the rotating rod 5 and is in sliding abutting connection with the inner wall of the prismatic groove of the rotating rod, so that the rotating transmission in the vertical moving process of the rotating rod 5 is realized.
Referring to fig. 2, 3, 6 and 8, a hall sensor for monitoring the rotation number and rotation position of an output shaft of the driving motor 8 is disposed in the driving motor 8, a switch button 25 for opening the driving motor 8 is nested at the upper end of the upper cover 2, the electromagnetic coil 18 is electrically connected with an electromagnetic driver 22, and the driving motor 8, the hall sensor, the electrode detector 21, the electromagnetic driver 22, the display screen 23 and the switch button 25 are electrically connected with a controller 24.
Specifically, automatic smashing, filtering transfer, detection display and automatic detection of food samples are conveniently realized.
Embodiment 2:
Fig. 9 to 13 show a food heavy metal component detection device, on the basis of embodiment 1, a rotating rod 5 is positioned above a blade 6 and is slidably sleeved with a floating plate 26, a prism hole 2601 matched with the rotating rod 5 is formed in the center of the floating plate 26, and a plurality of stirring plates 27 are arranged on the lower end face of the floating plate 26.
Specifically, when the blade 6 pulverizes food, the floating plate 26 always floats above the liquid level of the sample solution, so that the sample solution is prevented from splashing and adhering to the side wall of the detection cylinder 1 under the action of the blade 6, the waste of the sample juice is reduced, the detection accuracy is improved, the subsequent cleaning is convenient, in addition, the rotating rod 5 rotates to drive the floating plate 26 to rotate, the floating plate 26 drives the stirring plate 27 to rotate, the sample solution in the pulverizing process is synchronously stirred, the solvent and the sample juice are fully contacted and mixed, the extraction rate of the juice is improved, the components in the sample solution are distributed more uniformly, and the detection accuracy is further improved.
Referring to fig. 10, a limiting ring 502 is disposed between the blade 6 and the floating plate 26, and the limiting ring 502 abuts against the floating plate 26.
Specifically, the blade 6 is prevented from being damaged by collision interference of the floating plate 26 with the blade 6.
Referring to fig. 10, a second magnetic ring 28 is disposed in the floating plate 26 and cooperates with the electromagnetic coil 18, and the second magnetic ring 28 moves downward when magnetically attracted by the electromagnetic coil 18.
Specifically, after the electromagnetic coil 18 magnetically attracts the first magnetic ring 19, the plugging disc 14 is separated from the filter plate 13, the sample solution above the filter plate 13 is gradually reduced, food sample residues are accumulated in the filter plate 13, the floating plate 26 is abutted to the upper part of the sample residues, the electromagnetic coil 18 magnetically attracts the second magnetic ring 28, the second magnetic ring 28 drives the floating plate 26 to move downwards, the floating plate 26 and the filter plate 13 cooperate to squeeze the sample residues, so that the solution remained in the sample residues is squeezed out, the extraction amount of the sample solution is further improved, and the detection accuracy is improved.
Referring to fig. 11 and 12, the cross section of the stirring plate 27 is in a parallelogram shape, a nested groove 2602 for sliding the stirring plate 27 is formed in the floating plate 26, a sliding column 2701 is fixedly connected to the upper end of the stirring plate 27, a guide groove 2603 for sliding the sliding column 2701 is formed in the nested groove 2602, and the guide groove 2603 is an inclined groove and parallel to the side edge of the stirring plate 27.
Specifically, when the stirring plate 27 rotates along with the floating plate 26, the stirring plate 27 is subjected to the centrifugal force, the stirring plate 27 extends out of the nesting groove 2602, so that the stirring area is increased, and the stirring effect is further improved, and when the floating plate 26 extrudes food residues, the stirring plate 27 is contained in the nesting groove 2602, so that the lower end surface of the floating plate 26 is kept flat, and the extrusion liquid outlet effect is improved.
Referring to fig. 13, an infrared distance sensor 29 is fixedly connected to the upper cover 2 and disposed opposite to the floating plate 26, and the infrared distance sensor 29 monitors the position of the floating plate 26.
Specifically, during crushing, when the position of the floating plate 26 is not changed any more, it indicates that the crushing is complete, the volume of the mixed solution is not changed any more, at this time, the controller 24 can open the electromagnetic coil 18, open the plugging disc 14 below the filter plate 13, perform filtering and transferring operations, and when the position of the floating plate 26 is not changed again, it indicates that at this time, the sample solution is mostly transferred into the cavity below the filter plate 13, at this time, the controller 24 increases the current of the electromagnetic coil 18, so that the floating plate 26 is pressed downwards to perform extrusion liquid, the extrusion depth is detected, the extrusion effect is improved, and meanwhile, overload of the electromagnetic coil 18 is avoided.
The present application is not limited to the above-described embodiments, which are adopted in connection with the actual demands, and various changes made by the person skilled in the art without departing from the spirit of the present application are still within the scope of the present application.
Claims (3)
1. The utility model provides a food heavy metal ingredient detection device, which is characterized in that, including detecting section of thick bamboo (1), detecting section of thick bamboo (1) upper end detachable connection has upper cover (2), upper cover (2) fixedly connected with extends to fixed section of thick bamboo (4) in detecting section of thick bamboo (1), be equipped with in fixed section of thick bamboo (4) and extend to dwang (5) of its below, dwang (5) lower extreme fixedly connected with blade (6), dwang (5) peg graft have with its slip joint's grafting axle (7), peg graft axle (7) upper end extends to in upper cover (2) and is connected with driving motor (8) through the shaft coupling, driving motor (8) drive dwang (5) and blade (6) that are connected with it through peg graft axle (7) rotate;
The detection cylinder (1) is a hollow cylinder with openings at the upper end and the lower end, the upper cover (2) and the lower cover (3) are fixedly connected with the detection cylinder (1) in a threaded connection mode, and the detection cylinder (1) is made of transparent plastic materials;
The upper end of the rotating rod (5) is rotationally connected with a lifting ring (9) which is slidably nested in the fixed cylinder (4), the lifting ring (9) is in threaded connection with a vertical screw rod (10) which is installed in the inner wall of the fixed cylinder (4), the vertical screw rod (10) extends into the upper cover (2) and is connected with the plug-in shaft (7) through a reduction gear set (11) for transmission, the plug-in shaft (7) drives the vertical screw rod (10) to rotate through the reduction gear set (11), the vertical screw rod (10) drives the lifting ring (9) to move up and down in the fixed cylinder (4), and the lifting ring (9) drives the rotating rod (5) and a blade (6) installed on the rotating rod to move up and down;
The rotary rod (5) is positioned above the blade (6) and is sleeved with a floating plate (26) in a sliding manner, a prismatic hole (2601) matched with the rotary rod (5) is formed in the center position of the floating plate (26), a plurality of stirring plates (27) are arranged on the lower end face of the floating plate (26), a second magnetic ring (28) matched with an electromagnetic coil (18) is arranged in the floating plate (26), the second magnetic ring (28) moves downwards when magnetically attracted by the electromagnetic coil (18), the plug-in shaft (7) is a prismatic rod with a regular polygon cross section, a prismatic groove matched with the plug-in shaft (7) is formed in the rotary rod (5), a rotary ring (501) is arranged at the upper end of the rotary rod (5), and an annular groove for the rotary ring (501) to rotate is formed in the inner wall of the lifting ring (9);
The detection device comprises a detection cylinder (1), a lower cover (3) is detachably connected to the lower end of the detection cylinder (1), a supporting frame (12) is fixedly connected to the upper end of the lower cover (3), a filter plate (13) is fixedly connected to the supporting frame (12), a plugging disc (14) is abutted to the lower portion of the filter plate (13), a lifting cylinder (15) is fixedly connected to the plugging disc (14), an electromagnetic cylinder (16) which is in sliding connection with the lifting cylinder (15) is nested in the lifting cylinder (15), a first magnetic ring (19) is installed in the lifting cylinder (15), an electromagnetic coil (18) matched with the first magnetic ring (19) is installed in the electromagnetic cylinder (16), a limit spring (17) which is abutted to the electromagnetic cylinder (16) is nested in the lifting cylinder (15), the electromagnetic cylinder (16) is fixedly connected with the supporting frame (12) through a cross rod, an electrode rod (20) which extends into the detection cylinder (1) is fixedly connected to the lower cover (3), an electrode detector (21) which is installed in the lower cover (3), and a display screen (23) which is installed on the side wall of the lower cover (3) is connected to the electrode detector (21);
The driving motor (8) is internally provided with a Hall sensor for monitoring the rotation number and the rotation position of an output shaft of the driving motor (8), a switch button (25) for opening the driving motor (8) is nested at the upper end of the upper cover (2), an electromagnetic driver (22) is electrically connected with the electromagnetic coil (18), and the driving motor (8), the Hall sensor, the electrode detector (21), the electromagnetic driver (22), the display screen (23) and the switch button (25) are electrically connected with the controller (24).
2. The food heavy metal component detection device according to claim 1, wherein the rotating rod (5) is provided with a limiting ring (502) between the blade (6) and the floating plate (26), and the limiting ring (502) is abutted with the floating plate (26).
3. The device for detecting heavy metal components in foods according to claim 1, wherein the cross section of the stirring plate (27) is in a parallelogram shape, a nested groove (2602) for sliding the stirring plate (27) is formed in the floating plate (26), the upper end of the stirring plate (27) is fixedly connected with a sliding column (2701), a guide groove (2603) for sliding the sliding column (2701) is formed in the nested groove (2602), and the guide groove (2603) is an inclined groove and is parallel to the side edge of the stirring plate (27).
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| CN117722005A (en) * | 2023-12-25 | 2024-03-19 | 河南鼎鑫建设工程有限公司 | A kind of building construction formwork support equipment |
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| CN221465300U (en) * | 2023-11-01 | 2024-08-02 | 福建一品居生物科技有限公司 | Heavy metal detection device |
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| CN117722005A (en) * | 2023-12-25 | 2024-03-19 | 河南鼎鑫建设工程有限公司 | A kind of building construction formwork support equipment |
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