CN109406201B - Food heavy metal content rapid detection device - Google Patents
Food heavy metal content rapid detection device Download PDFInfo
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- CN109406201B CN109406201B CN201811549318.XA CN201811549318A CN109406201B CN 109406201 B CN109406201 B CN 109406201B CN 201811549318 A CN201811549318 A CN 201811549318A CN 109406201 B CN109406201 B CN 109406201B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/04—Devices for withdrawing samples in the solid state, e.g. by cutting
- G01N1/08—Devices for withdrawing samples in the solid state, e.g. by cutting involving an extracting tool, e.g. core bit
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- 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
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- 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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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
- G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
- G01N21/78—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour
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- 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
- G01N2001/2873—Cutting or cleaving
Abstract
The invention discloses a device for quickly detecting the heavy metal content of food, which comprises a detection mechanism, wherein the detection mechanism comprises a host shell, one side of the upper end surface of the host shell is connected with a touch table, a printer is embedded in the plane of the touch table, a display screen is embedded in the inclined surface of the touch table, keys are uniformly embedded in the inclined surface of the touch table at the lower part of the display screen, a plurality of detection pools are arranged at the other side of the upper end surface of the host shell, a cover plate is rotatably connected to the positions of the upper end surface of the host shell corresponding to the detection pools, an AVR central control processor is fixed in the host shell, and a fixing groove is formed in the side wall of the host shell. According to the invention, the food samples with different volumes are extracted by changing the distance between the push block and the top surface of the sampling cylinder, and the operation mode avoids overlong detection period caused by repeated cutting of experimenters, thereby shortening the detection period.
Description
Technical Field
The invention relates to the technical field of detection equipment, in particular to a device for rapidly detecting the heavy metal content of food.
Background
Food safety has an important influence on the life and health of the social population, and currently, related food detection mechanisms need to improve responsibility consciousness in daily work, perfect various detection technologies and ensure food safety. At present, metals with the specific gravity of more than 5 in the nature are called As heavy metals, not all of which threaten human health, and when the actual content of the heavy metals exceeds the tolerance of the human body, the heavy metals can cause harm of different degrees, such As Pb, Cd, As, Hg and other elements. Many heavy metals cannot be effectively eliminated by a simple method, and if people use food polluted by the heavy metals for a long time, poisoning problems can be caused. Therefore, the research on the heavy metal detection method has important significance for maintaining food safety.
Present food heavy metal content verifying attachment is at the in-process that uses, and operating personnel need collect the food sample of regulation quality, but among the manual operation process, can not accurately hold the weight of good food sample, therefore need cut repeatedly to the time that leads to whole food heavy metal content to detect is longer, and the food sample that cuts need smash and stir, and current crushing stirring structure is complicated, has increased detection device's cost.
Disclosure of Invention
In order to overcome the technical problems, the invention aims to provide a device for quickly detecting the heavy metal content in food, which can be used for extracting food samples with different volumes by changing the distance between a push block and the top surface of a sampling cylinder, and the operation mode can avoid overlong detection period caused by repeated cutting of experimenters, thereby shortening the detection period; the top surface at the sampling cylinder is fixed with the cutting ring, and the inner wall of cutting ring has a plurality of cutting pieces such as angle welding, then be fixed with second step motor in the bottom of sampling cylinder, second step motor passes through the motor shaft and is connected with the inside inserted bar transmission of sampling cylinder, and there is the barb at the tip welding of inserted bar, food sample is when the sampling cylinder of discharging, through barb and the squeezing action between the cutting piece, thereby smash food sample and stir solution, this kind of novel structure, high efficiency, moreover, the steam generator is simple in structure, can reduce detection device's manufacturing cost.
The purpose of the invention can be realized by the following technical scheme:
a food heavy metal content rapid detection device comprises a detection mechanism, wherein the detection mechanism comprises a host shell, one side of the upper end face of the host shell is connected with a touch table, a printer is embedded in the plane of the touch table, a display screen is embedded in the inclined plane of the touch table, keys are uniformly embedded in the inclined plane of the touch table at the lower part of the display screen, a plurality of detection pools are arranged on the other side of the upper end face of the host shell, a cover plate is rotatably connected to the upper end face of the host shell corresponding to the positions of the detection pools, an AVR central control processor is fixed in the host shell, a fixed groove is formed in the side wall of the host shell, the interior of the fixed groove is connected with a sampling crushing mechanism through a wire, the sampling crushing mechanism comprises a base, a lower support cylinder, an upper support cylinder and a sampling cylinder, and the upper end face of the base is fixedly provided with the lower support cylinder, the upper end face of the lower supporting cylinder is connected with an upper supporting cylinder through a weighing sensor, the inner wall of the upper end of the upper supporting cylinder is movably connected with a transmission ring, the inner wall of the transmission ring is provided with an internal thread, the outer wall of the transmission ring is provided with an external gear ring, the transmission ring is screwed and connected with a sampling cylinder of which the outer wall is provided with an incomplete external thread through the internal thread, the outer wall of the upper supporting cylinder is fixed with a first step motor, the first step motor is connected with a gear which is meshed and driven with the external gear ring through a motor shaft in a transmission way, the side wall of the sampling cylinder is provided with a chute, the outer wall of the upper supporting cylinder is fixedly connected with a push block which is in sliding connection with the inner wall of the sampling cylinder through a connecting frame, the inner bottom of the sampling cylinder is fixed with a second step motor, the second step motor is in transmission connection with an inserted link which, the welding of the top of sampler barrel has the cutting ring, the equal angle welding of the inner wall of cutting ring has a plurality of cutting pieces.
Further, the method comprises the following steps: the fixed groove and the sampling crushing mechanism are matched components.
Further, the method comprises the following steps: the sum of twice the length of the cutting blade and the length of the barb is the same as the inner diameter of the cutting ring.
Further, the method comprises the following steps: the sum of the length of the insertion rod and the height of the barb is equal to the sum of the heights of the sampling tube and the cutting ring.
Further, the method comprises the following steps: the height difference between the top surface of the cutting ring and the bottom of the second stepping motor is smaller than the height difference between the top surface of the pushing block and the top surface of the base.
Further, the method comprises the following steps: the output ends of the key internal controller and the weighing sensor are electrically connected with the input end of the AVR central control processor, and the output end of the AVR central control processor is electrically connected with the input ends of the display screen, the printer, the first stepping motor and the second stepping motor.
Further, the method comprises the following steps: the inner diameter of the sampling tube is in transition fit with the outer diameter of the push block.
Further, the method comprises the following steps: the section of the barb is arrow-shaped.
The use method of the food heavy metal content rapid detection device comprises the following specific use operation steps:
the method comprises the following steps: buffer solution, enzyme powder, color developing agent and substrate are proportioned, and then the sampling and crushing mechanism is taken out from the interior of a fixed groove of the inspection mechanism;
step two: food needing sampling is placed on a designated working table surface, an instruction is sent to an AVR central control processor through an operation key, the AVR central control processor controls a first stepping motor to rotate, the first stepping motor is meshed with an outer gear ring of the outer wall of a transmission ring through a gear in the rotating process, so that the transmission ring is driven to rotate, the rotating transmission ring is screwed with an incomplete external thread of the outer wall of a sampling cylinder through an internal thread of the inner wall of the rotating transmission ring, so that the sampling cylinder is driven to move upwards, the quality of samples which can be collected between the top end of the sampling cylinder and a push block is close to the specified quality of the samples, then a lower support cylinder of a sampling crushing mechanism is held to align the front end of a cutting ring to the food needing sampling, then the food is punctured, the food can be cut by the cutting ring after being punctured, and after entering the sampling cylinder, the food is prevented from being separated from the sampling cylinder through a, then, the sampling and crushing mechanism is placed on a horizontal desktop through a base, detected weight data are transmitted to an AVR central control processor through a weighing sensor, then the AVR central control processor feeds back the weight data through a display screen, then a first stepping motor is adjusted according to the weight difference to change the height difference between the top end of the sampling cylinder and the push block, and then cutting and sampling are carried out through a cutting ring again until the specified sampling weight is met;
step three: the buffer solution with the specified volume is poured into the sample bottle, then the sampling cylinder of the sampling crushing mechanism is inserted into the sample bottle, then the instruction is sent to the AVR central control processor through the control key, the AVR central control processor controls the first stepping motor and the second stepping motor to rotate, the first stepping motor is meshed with the outer gear ring of the outer wall of the transmission ring through the gear in the rotating process, so as to drive the transmission ring to rotate, the rotating transmission ring is screwed with the incomplete outer thread of the outer wall of the sampling cylinder through the inner thread of the inner wall of the transmission ring, so as to drive the sampling cylinder to move downwards, the distance between the top end of the sampling cylinder and the push block is gradually reduced, so that the food in the sampling cylinder is discharged from the interior of the sampling cylinder under the action of the push block, and the barb is driven to rotate at high speed through the inserted rod in the rotating process of the second stepping motor, so that the food is discharged outwards, crushing under the extrusion action of the cutting piece and the barb, stirring the liquid in the sample bottle by the barb rotating at a high speed, and taking supernatant as sample liquid after the solution is stood;
step four: taking two test tubes A and B, pouring buffer solution and sample solution with specified volumes into the test tubes A and B respectively, adding enzyme solution and color developing agent with specified volumes into A, B test tubes and standing for a period of time, then adding substrate with specified volumes into A, B test tubes respectively, then taking liquid in A, B test tubes and pouring the liquid into C, D cuvettes respectively, then putting the C cuvettes into a control pool of a detection pool, putting the D cuvettes into the sample pool of the detection pool, sending an instruction to an AVR central control processor through a key for detection, then waiting for a period of time, displaying a detection result on a display screen, and then controlling a printer to print the detection result.
The invention has the beneficial effects that:
1. the side wall of a main machine shell of the inspection mechanism is provided with a fixing groove, a sampling crushing mechanism is fixed through the fixing groove and consists of a base, a lower supporting cylinder, an upper supporting cylinder, a sampling cylinder and the like, wherein the lower supporting cylinder is fixed on the upper part of the base, the upper supporting cylinder is connected on the upper part of the lower supporting cylinder through a weighing sensor, a transmission ring is rotatably connected on the upper part of the upper supporting cylinder, a first step motor is fixed on the outer wall of the upper supporting cylinder, the first step motor is meshed with an outer gear ring on the outer wall of the transmission ring through a gear connected in a transmission way, the inner wall of the transmission ring is screwed with an incomplete external thread on the outer wall of the sampling cylinder through an internal thread, the outer wall of the upper supporting cylinder is connected with a push block inside the sampling cylinder through a connecting frame, so that an experimenter can extract food samples with different volumes by changing the distance between the push block and the, the operation mode avoids that the detection period is too long due to repeated cutting of experimenters, so that the detection period is shortened;
2. the top surface at the sampling cylinder is fixed with the cutting ring, and the inner wall of cutting ring has a plurality of cutting pieces such as angle welding, then be fixed with second step motor in the bottom of sampling cylinder, second step motor passes through the motor shaft and is connected with the inside inserted bar transmission of sampling cylinder, and there is the barb at the tip welding of inserted bar, when the sample is poured into the sample bottle like this, move down through first step motor drive sampling cylinder, it is rotatory through second step motor drive barb, food sample is when the sampling cylinder is being discharged like this, through the squeezing action between barb and the cutting piece, thereby smash food sample and stir solution, this kind of novel structure, high efficiency, moreover, the steam generator is simple in structure, can reduce detection device's manufacturing cost.
Drawings
The invention will be further described with reference to the accompanying drawings.
Fig. 1 is a schematic view of the overall structure of the present invention.
FIG. 2 is a schematic view of the structure of the inspection mechanism of the present invention.
FIG. 3 is a schematic view of the structure of the sampling crushing mechanism of the present invention.
FIG. 4 is a schematic view showing the internal structure of the sampling crushing mechanism of the present invention.
FIG. 5 is a schematic view of the cutting ring of the present invention.
FIG. 6 is a schematic view of the construction of the sampling tube of the present invention.
Fig. 7 is a schematic view of the drive ring of the present invention.
In the figure: 100. a checking mechanism; 101. a detection cell; 102. a cover plate; 103. a touch control console; 104. a printer; 105. a display screen; 106. fixing the groove; 107. a main housing; 108. pressing a key; 109. an AVR central control processor; 200. a sampling and crushing mechanism; 201. a base; 202. a lower support cylinder; 203. a first stepper motor; 204. a gear; 205. a drive ring; 2051. an internal thread; 2052. an outer ring gear; 206. a sampling tube; 2061. incomplete external threads; 2062. a chute; 207. cutting a ring; 2071. cutting the slices; 208. a connecting frame; 209. an upper support cylinder; 210. a second stepping motor; 211. inserting a rod; 212. a push block; 213. a barb; 214. and a weighing sensor.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-7, a device for rapidly detecting heavy metal content in food comprises an inspection mechanism 100, the inspection mechanism 100 includes a main housing 107, one side of an upper end surface of the main housing 107 is connected with a touch table 103, a printer 104 is embedded in a plane of the touch table 103, a display screen 105 is embedded in an inclined surface of the touch table 103, keys 108 are uniformly embedded in the inclined surface of the touch table 103 at a lower portion of the display screen 105, a plurality of detection cells 101 are disposed on the other side of the upper end surface of the main housing 107, a cover plate 102 is rotatably connected to the upper end surface of the main housing 107 corresponding to the detection cells 101, an AVR central control processor 109 is fixed inside the main housing 107, a fixing groove 106 is formed in a side wall of the main housing 107, the fixing groove 106 is connected to a sampling and pulverizing mechanism 200 through a wire, the sampling and pulverizing mechanism 200 includes a base 201, the sampling device comprises a lower support cylinder 202, an upper support cylinder 209 and a sampling cylinder 206, wherein the lower support cylinder 202 is fixed on the upper end surface of a base 201, the upper end surface of the lower support cylinder 202 is connected with the upper support cylinder 209 through a weighing sensor 214, the inner wall of the upper end of the upper support cylinder 209 is movably connected with a transmission ring 205, the inner wall of the transmission ring 205 is provided with an internal thread 2051, the outer wall of the transmission ring 205 is provided with an external gear ring 2052, the transmission ring 205 is in screwed connection with the sampling cylinder 206 of which the outer wall is provided with an incomplete external thread 2061 through the internal thread 2051, the outer wall of the upper support cylinder 209 is fixed with a first step motor 203, the first step motor 203 is connected with a gear 204 in meshing transmission with the external gear ring 2052 through motor shaft transmission, the side wall of the sampling cylinder 206 is provided with a chute 2062, the outer wall of the upper support cylinder 209 is fixedly connected with a push block 212 in sliding connection with, the second stepping motor 210 is in transmission connection with an insertion rod 211 penetrating through a push block 212 in the sampling tube 206 through a motor shaft, the top of the insertion rod 211 is welded with a barb 213, the top end of the sampling tube 206 is welded with a cutting ring 207, and the inner wall of the cutting ring 207 is welded with a plurality of cutting pieces 2071 at equal angles.
As a technical optimization scheme of the invention, the fixing groove 106 and the sampling crushing mechanism 200 are matched components, so that the sampling crushing mechanism is convenient to store.
As a technical optimization scheme of the present invention, the sum of twice the length of the cutting blade 2071 and the length of the barb 213 is the same as the inner diameter of the cutting ring 207, so as to improve the extrusion effect between the cutting blade 2071 and the barb 213.
As a technical optimization scheme of the invention, the sum of the length of the insertion rod 211 and the height of the barb 213 is equal to the sum of the heights of the sampling tube 206 and the cutting ring 207, so that the barb 213 can fix the food sample conveniently.
As a technical optimization scheme of the invention, the height difference between the top surface of the cutting ring 207 and the bottom of the second stepping motor 210 is smaller than the height difference between the top surface of the push block 212 and the top surface of the base 201, so that the food sample in the sampling cylinder 206 cannot be discharged in the downward moving process.
As a technical optimization scheme of the present invention, the output ends of the controller inside the key 108 and the weighing sensor 214 are electrically connected to the input end of the AVR central control processor 109, and the output end of the AVR central control processor 109 is electrically connected to the input ends of the display screen 105, the printer 104, the first stepping motor 203, and the second stepping motor 210, which is convenient for control.
As a technical optimization scheme of the invention, the inner diameter of the sampling tube 206 is in transition fit with the outer diameter of the push block 212, so that the push block 212 can discharge food samples in the sampling tube 206 conveniently.
As a technical optimization scheme of the invention, the section of the barb 213 is arrow-shaped, so that the food sample is conveniently locked and crushed.
The working principle is as follows: when the sampling and crushing device is used, buffer solution, enzyme powder, color developing agent and substrate are proportioned firstly, then the sampling and crushing mechanism 200 is taken out from the interior of the fixing groove 106 of the inspection mechanism 100, then food to be sampled is placed on a specified working table, an instruction is sent to the AVR central control processor 109 through the control key 108, the AVR central control processor 109 controls the first stepping motor 203 to rotate, the first stepping motor 203 is meshed with the outer gear ring 2052 on the outer wall of the transmission ring 205 through the gear 204 in the rotating process, so as to drive the transmission ring 205 to rotate, the rotating transmission ring 205 is screwed with the incomplete external thread 2061 on the outer wall of the sampling cylinder 206 through the internal thread 2051 on the inner wall of the rotating transmission ring 205, so as to drive the sampling cylinder 206 to move upwards, so that the quality of the sample which can be collected between the top end of the sampling cylinder 206 and the push block 212 is close to the sampling specified quality, then the lower support cylinder 202 of the sampling and crushing mechanism 200 is held to align the, then the food is pierced, the food is pierced and then will be divided by the cutting ring 207, after entering the sampling cylinder 206, the food is prevented from being separated from the sampling cylinder 206 by the barb 213, then the sampling crushing mechanism 200 is placed on the horizontal table surface by the base 201, then the weight data detected is transmitted to the AVR central control processor 109 by the weighing sensor 214, then the AVR central control processor 109 feeds back the weight data by the display screen 105, then the height difference between the top end of the sampling cylinder 206 and the push block 212 is changed by adjusting the first stepping motor 203 according to the weight difference, then the cutting sampling is carried out again by the cutting ring 207 until the specified sampling weight is met, then the buffer solution with the specified volume is poured into the sample bottle, then the sampling cylinder 206 of the sampling crushing mechanism 200 is inserted into the sample bottle, then the instruction is sent to the AVR central control processor 109 by the control key 108, the AVR central control processor 109 controls the first stepping motor 203 and the second stepping motor 210 to rotate, the first stepping motor 203 is meshed with the outer gear ring 2052 on the outer wall of the transmission ring 205 through the gear 204 in the rotating process so as to drive the transmission ring 205 to rotate, the rotating transmission ring 205 is screwed with the incomplete external thread 2061 on the outer wall of the sampling cylinder 206 through the internal thread 2051 on the inner wall of the rotating transmission ring so as to drive the sampling cylinder 206 to move downwards, the distance between the top end of the sampling cylinder 206 and the push block 212 is gradually reduced, so that the food in the sampling cylinder 206 is discharged from the interior of the sampling cylinder 206 under the action of the push block 212, the second stepping motor 210 drives the barb 213 to rotate at a high speed through the inserted rod 211 in the rotating process, so that the food is crushed under the extrusion action of the cutting blade 2071 and the barb 213 in the outward discharging process, and the barb 213 rotating at a high speed stirs the liquid in the sample bottle, after the solution is stood, taking supernatant as sample liquid, finally taking two test tubes A and B, respectively pouring buffer solution and sample liquid with specified volumes into the test tube A and the test tube B, adding enzyme liquid and color developing agent with specified volumes into the A, B test tubes, standing for a period of time, then respectively adding substrate with specified volumes into the test tube A, B, respectively pouring liquid in the A, B test tube into the cuvette C, D, then placing the cuvette C into a control pool of the detection pool 101, placing the cuvette D into the sample pool of the detection pool 101, sending an instruction to the AVR central control processor 109 through the button 108 for detection, waiting for a period of time, displaying a detection result on the display screen 105, and then controlling the printer 104 to print the detection result.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is illustrative and explanatory only and is not intended to be exhaustive or to limit the invention to the precise embodiments described, and various modifications, additions, and substitutions may be made by those skilled in the art without departing from the scope of the invention or exceeding the scope of the claims.
Claims (9)
1. A device for rapidly detecting the heavy metal content of food comprises a detection mechanism (100) and is characterized in that, the inspection mechanism (100) comprises a host shell (107), one side of the upper end surface of the host shell (107) is connected with a touch control table (103), a printer (104) is embedded and installed on the plane of the touch console (103), a display screen (105) is embedded and installed on the inclined plane of the touch console (103), the inclined plane of the touch control platform (103) is positioned at the lower part of the display screen (105) and is evenly embedded with keys (108), the other side of the upper end surface of the host machine shell (107) is provided with a plurality of detection cells (101), the upper end surface of the main machine shell (107) is rotatably connected with a cover plate (102) corresponding to the positions of the plurality of detection pools (101), an AVR central control processor (109) is fixed inside the host casing (107), and a fixing groove (106) is formed in the side wall of the host casing (107);
the inside of fixed recess (106) is connected with sample rubbing crusher mechanism (200) through the wire, sample rubbing crusher mechanism (200) includes base (201), lower support cylinder (202), goes up support cylinder (209) and sampling tube (206), the up end of base (201) is fixed with lower support cylinder (202), the up end of lower support cylinder (202) is connected with upper support cylinder (209) through weighing sensor (214), the upper end inner wall swing joint of upper support cylinder (209) has drive ring (205), the inner wall of drive ring (205) is provided with internal thread (2051), the outer wall of drive ring (205) is provided with outer ring gear (2052), drive ring (205) is connected with sampling tube (206) that the outer wall was provided with incomplete external screw thread (2061) through internal thread (2051), the outer wall of upper support cylinder (209) is fixed with first step motor (203), the sampling device is characterized in that the first stepping motor (203) is connected with a gear (204) in meshing transmission with an outer gear ring (2052) through a motor shaft, a sliding groove (2062) is formed in the side wall of the sampling cylinder (206), the outer wall of the upper supporting cylinder (209) penetrates through the sliding groove (2062) through a connecting frame (208) and is fixedly connected with a push block (212) in sliding connection with the inner wall of the sampling cylinder (206), a second stepping motor (210) is fixed to the inner bottom of the sampling cylinder (206), the second stepping motor (210) is in transmission connection with an inserted link (211) penetrating through the push block (212) in the sampling cylinder (206) through the motor shaft, a barb (213) is welded to the top of the inserted link (211), a cutting ring (207) is welded to the top end of the sampling cylinder (206), and a plurality of cutting pieces (2071) are welded to the inner wall of the cutting ring (207.
2. The device for rapidly detecting the heavy metal content in the food according to claim 1, wherein the fixing groove (106) and the sampling and crushing mechanism (200) are matched components.
3. The device for rapidly detecting the heavy metal content in food according to claim 1, wherein the sum of twice the length of the cutting blade (2071) and the length of the barb (213) is the same as the inner diameter of the cutting ring (207).
4. The device for rapidly detecting the heavy metal content in the food as claimed in claim 1, wherein the sum of the length of the inserted rod (211) and the height of the barb (213) is equal to the sum of the heights of the sampling cylinder (206) and the cutting ring (207).
5. The rapid detection device for heavy metal content in food according to claim 1, wherein the height difference between the top surface of the cutting ring (207) and the bottom of the second stepping motor (210) is smaller than the height difference between the top surface of the pushing block (212) and the top surface of the base (201).
6. The device for rapidly detecting the heavy metal content in the food according to claim 1, wherein the output ends of the controller inside the key (108) and the weighing sensor (214) are electrically connected with the input end of an AVR central control processor (109), and the output end of the AVR central control processor (109) is electrically connected with the input ends of the display screen (105), the printer (104), the first stepping motor (203) and the second stepping motor (210).
7. The device for rapidly detecting the heavy metal content in the food as claimed in claim 1, wherein the inner diameter of the sampling cylinder (206) is in transition fit with the outer diameter of the push block (212).
8. The device for rapidly detecting the heavy metal content in the food as claimed in claim 1, wherein the cross section of the barb (213) is arrow-shaped.
9. The device for rapidly detecting the heavy metal content in the food according to claim 1, wherein the device for rapidly detecting the heavy metal content in the food is specifically used and operated by the following steps:
the method comprises the following steps: buffer solution, enzyme powder, color developing agent and substrate are proportioned, and then the sampling and crushing mechanism (200) is taken out from the interior of a fixing groove (106) of the inspection mechanism (100);
step two: food to be sampled is placed on a designated working table surface, an instruction is sent to an AVR central control processor (109) through an operation key (108), the AVR central control processor (109) controls a first stepping motor (203) to rotate, the first stepping motor (203) is meshed with an outer gear ring (2052) on the outer wall of a transmission ring (205) through a gear (204) in the rotating process, so that the transmission ring (205) is driven to rotate, the rotating transmission ring (205) is screwed with an incomplete external thread (2061) on the outer wall of a sampling cylinder (206) through an internal thread (2051) on the inner wall of the transmission ring, so that the sampling cylinder (206) is driven to move upwards, the quality of samples which can be collected between the top end of the sampling cylinder (206) and a push block (212) is close to the sampling specified quality, then a lower support cylinder (202) of a sampling crushing mechanism (200) is held, and the front end of a cutting ring (207) is aligned to the food to be sampled, then food is pierced, the food is pierced and then can be cut by a cutting ring (207), after the food enters a sampling cylinder (206), the food is prevented from being separated from the sampling cylinder (206) through a barb (213), then a sampling and crushing mechanism (200) is placed on a horizontal table top through a base (201), then detected weight data are transmitted to an AVR central control processor (109) through a weighing sensor (214), then the AVR central control processor (109) feeds back the weight data through a display screen (105), then a first stepping motor (203) is adjusted according to the weight difference to change the height difference between the top end of the sampling cylinder (206) and a push block (212), and then the food is cut and sampled through the cutting ring (207) again until the specified sampling weight is met;
step three: pouring a buffer solution with a specified volume into a sample bottle, inserting a sampling cylinder (206) of a sampling and crushing mechanism (200) into the sample bottle, sending an instruction to an AVR central control processor (109) through an operation key (108), controlling a first stepping motor (203) and a second stepping motor (210) to rotate through the AVR central control processor (109), wherein the first stepping motor (203) is meshed with an outer gear ring (2052) on the outer wall of a transmission ring (205) through a gear (204) in the rotating process so as to drive the transmission ring (205) to rotate, the rotating transmission ring (205) is screwed with an incomplete external thread (2061) on the outer wall of the sampling cylinder (206) through an internal thread (2051) on the inner wall of the transmission ring, so as to drive the sampling cylinder (206) to move downwards, gradually reducing the distance between the top end of the sampling cylinder (206) and a push block (212), and enabling food in the sampling cylinder (206) to be under the action of the push block (212), discharging from the interior of the sampling cylinder (206), driving the barb (213) to rotate at a high speed by the second stepping motor (210) through the inserted rod (211) in the rotating process, so that the food is crushed under the extrusion action of the cutting blade (2071) and the barb (213) in the outward discharging process, stirring the liquid in the sample bottle by the barb (213) rotating at a high speed, and taking supernatant as sample liquid after the solution is stood;
step four: taking two test tubes A and B, pouring buffer solution and sample solution with specified volumes into the test tubes A and B respectively, adding enzyme solution and color developing agent with specified volumes into A, B test tubes and standing for a period of time, then adding substrate with specified volumes into A, B test tubes respectively, then pouring the liquid in A, B test tubes into C, D cuvettes respectively, then putting the cuvette C into a control pool of a detection pool (101), putting the cuvette D into the sample pool of the detection pool (101), sending an instruction to an AVR central control processor (109) through a button (108) for detection, waiting for a period of time, displaying a detection result on a display screen (105), and then controlling a printer (104) to print the detection result.
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| CN111208129A (en) * | 2020-03-04 | 2020-05-29 | 上海蓝之创智能科技有限公司 | Portable food detection heavy metal analyzer |
| CN111693659B (en) * | 2020-06-24 | 2022-05-17 | 青岛享利味食品科技有限公司 | Food detection structure and detection method thereof |
| CN113237724A (en) * | 2020-06-24 | 2021-08-10 | 华开瑞 | Food sampling structure and sampling method thereof |
| CN113866443B (en) * | 2021-09-24 | 2024-04-19 | 无锡集佳智能科技有限公司 | Automatic sample adding and mixing method applied to spectrophotometry pretreatment |
| CN117191490B (en) * | 2023-11-06 | 2024-02-23 | 江西省甜香粮油饲料贸易有限公司 | Sampling detection device for grain purchase |
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