CN216717960U - Nitrite in food is preliminary treatment detection device in batches - Google Patents
Nitrite in food is preliminary treatment detection device in batches Download PDFInfo
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- CN216717960U CN216717960U CN202123262421.6U CN202123262421U CN216717960U CN 216717960 U CN216717960 U CN 216717960U CN 202123262421 U CN202123262421 U CN 202123262421U CN 216717960 U CN216717960 U CN 216717960U
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Abstract
The utility model provides a batch pretreatment detection device for nitrite in food, which structurally comprises a water bath, a first ultrasonic groove, a second ultrasonic groove, a spectrophotometry system, a pure water groove, a first liquid-transferring system and a second liquid-transferring system; wherein the water bath, the first ultrasonic groove and the second ultrasonic groove are connected in sequence, and a plurality of rows of test tubes are arranged inside the water bath, the first ultrasonic groove and the second ultrasonic groove; the spectrophotometric system is arranged at the outer side of the second ultrasonic groove and is connected with each test tube in the second ultrasonic groove through a pipeline; the pure water tank is respectively connected with each test tube in the water bath tank, the first ultrasonic tank and the second ultrasonic tank through pipelines, the first liquid transferring system is respectively and correspondingly connected with the test tubes at the same positions of the water bath tank and the first ultrasonic tank through a plurality of groups of pipelines, and the second liquid transferring system is respectively and correspondingly connected with the test tubes at the same positions of the first ultrasonic tank and the second ultrasonic tank through a plurality of groups of pipelines. The food sample pretreatment device can be used for quickly and automatically carrying out batch pretreatment on food samples, greatly shortens the detection time, avoids misoperation and saves the detection cost.
Description
Technical Field
The utility model relates to a food detection device, in particular to a batch pretreatment detection device for nitrite in food, and belongs to the technical field of food safety detection.
Background
In the food safety detection process, as the foods contain different components, including organic macromolecular substances such as protein, fat, carbohydrate and minerals, and non-nutrient substances entering the foods for other reasons, even harmful components such as pesticide residues, veterinary drug residues and the like, the components interfere with each other when the foods are analyzed, and the final detection result is influenced; and the content of other detected components is extremely low, the detected components are not easy to detect, the detected components need to be concentrated, and in order to ensure the detection accuracy, samples need to be pretreated before food analysis and detection.
Nitrite is a generic term for a class of inorganic compounds that are widely found in the human environment and widely used in industry, construction and also commonly used in meat processing. However, the existing food sample pretreatment process is mostly completed manually by experimenters, the working efficiency is low, mistakes are easy to occur, especially for the detection of the nitrite, the pretreatment process is complex in steps, and although partial auxiliary operation equipment exists in the prior art, batch automatic pretreatment cannot be realized.
Disclosure of Invention
The utility model aims to solve the problems in the existing detection process of nitrite in food and provides a batch pretreatment detection device for nitrite in food.
The technical solution of the utility model is as follows: a batch pretreatment detection device for nitrite in food structurally comprises a water bath, a first ultrasonic groove, a second ultrasonic groove, a spectrophotometric system, a pure water groove, a first liquid transfer system, a second liquid transfer system, a water bath device and an ultrasonic device; the water bath, the first ultrasonic groove and the second ultrasonic groove are sequentially connected, a plurality of rows of test tubes are arranged in the water bath, and a water bath device is arranged at the bottom of the water bath; the bottoms of the first ultrasonic groove and the second ultrasonic groove are provided with ultrasonic devices; the spectrophotometric system is arranged at the outer side of the second ultrasonic groove and is connected with each test tube in the second ultrasonic groove through a pipeline; the pure water tank is respectively connected with each test tube in the water bath tank, the first ultrasonic tank and the second ultrasonic tank through pipelines, the first liquid transferring system is respectively and correspondingly connected with the test tubes at the same positions of the water bath tank and the first ultrasonic tank through a plurality of groups of pipelines, and the second liquid transferring system is respectively and correspondingly connected with the test tubes at the same positions of the first ultrasonic tank and the second ultrasonic tank through a plurality of groups of pipelines.
Further, the water bath comprises a borax solution storage tank, the borax solution is stored inside the water bath, and each test tube in the water bath is connected through a pipeline; the first ultrasonic groove comprises a zinc acetate storage groove and a potassium ferrocyanide storage groove, and the solutions of corresponding substances are stored in the first ultrasonic groove and are respectively connected with each test tube in the first ultrasonic groove through a pipeline; the second ultrasonic groove comprises a sulfanilic acid storage groove and a naphthyl ethylenediamine hydrochloride storage groove, and the solutions of corresponding substances are stored in the second ultrasonic groove and are respectively connected with each test tube in the second ultrasonic groove through pipelines.
Furthermore, the first liquid transferring system and the second liquid transferring system can control the liquid transferring amount through a microcomputer and transfer filtrate through an internal liquid transferring pump, and both the first liquid transferring system and the second liquid transferring system suck from the bottom of the test tube of the former device and discharge the filtrate from the top of the test tube of the latter device.
Furthermore, a heating device is arranged on a main pipeline of the pure water tank connected with the water bath tank.
Furthermore, all be equipped with infrared constant volume device on the inside lateral wall in first ultrasonic groove, second ultrasonic groove to be connected with the pure water tank.
Furthermore, a waste liquid tank is also arranged on the pipeline of the spectrophotometry system connected with the second ultrasonic tank.
Compared with the prior art, the utility model has the advantages that: can carry out batch preliminary treatment to food sample fast automatically, greatly shorten check-out time, avoid the maloperation to lead to the sample to damage, practice thrift the detection cost.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the batch pretreatment detection device for nitrite in food.
Detailed Description
The technical scheme of the utility model is further explained by combining the attached drawings. Examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used in a tabular sense for descriptive purposes only and are not to be construed as indicating or implying relative importance or imply a number of indicated technical features. Thus, features defined as "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, a first feature "on," "above," and "over" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The batch pretreatment detection device for nitrite in food shown in fig. 1 comprises a water bath 1, a first ultrasonic groove 2, a second ultrasonic groove 3, a spectrophotometric system 4, a pure water groove 5, a first liquid transferring system 6, a second liquid transferring system 7, a water bath device 10 and an ultrasonic device 11; wherein the water bath 1, the first ultrasonic groove 2 and the second ultrasonic groove 3 are connected in sequence, a plurality of rows of test tubes are arranged in the water bath 1, and a water bath device 10 is arranged at the bottom of the water bath 1; the bottoms of the first ultrasonic groove 2 and the second ultrasonic groove 3 are provided with ultrasonic devices 11; the spectrophotometric system 4 is arranged at the outer side of the second ultrasonic groove 3 and is connected with each test tube in the second ultrasonic groove 3 through a pipeline; pure water tank 5 passes through the pipeline and connects water bath 1 respectively, each test tube in first ultrasonic groove 2 and the second ultrasonic groove 3, first liquid-moving system 6 corresponds the test tube of connecting water bath 1 and first ultrasonic groove 2 same position respectively through the multiunit pipeline, second liquid-moving system 7 corresponds the test tube of connecting first ultrasonic groove 2 and second ultrasonic groove 3 same position respectively through the multiunit pipeline (for clearly showing the pipe connection relation, only give the pipe connection state that a set of test tube corresponds in the picture, wherein the bolder is liquid-moving system pipeline, secondly is pure water pipeline, the finest is the liquid outlet pipeline of each liquid holding tank).
The water bath 1 comprises a borax solution storage tank 1-1, the borax solution is stored inside the water bath 1, and each test tube in the water bath 1 is connected through a pipeline; the first ultrasonic groove 2 comprises a zinc acetate groove 2-1 and a potassium ferrocyanide groove 2-2, and the solutions of corresponding substances are stored in the first ultrasonic groove 2 and are respectively connected with each test tube in the first ultrasonic groove 2 through pipelines; the second ultrasonic groove 3 comprises a sulfanilic acid storage groove 3-1 and a naphthyl ethylenediamine hydrochloride storage groove 3-2, and the solutions of corresponding substances are stored in the second ultrasonic groove 3 and are respectively connected with each test tube in the second ultrasonic groove 3 through pipelines. The storage tanks can be controlled by a microcomputer to correspondingly store the addition amount of the solution, and the solution can be accurately added according to the setting through an internal liquid-transferring pump.
The first pipetting system 6 and the second pipetting system 7 can control the amount of liquid transfer through a microcomputer and transfer filtrate through an internal pipetting pump, and the first pipetting system 6 and the second pipetting system 7 suck from the bottom of a test tube of a former device and discharge the filtrate from the top of the test tube of a latter device.
A heating device 9 is arranged on a main pipeline of the pure water tank 5 connected with the water bath 1, and can heat the pure water injected into the test tube in the water bath 1 to a corresponding temperature in advance so as to meet the experimental requirements; the pure water tank 5 can also control the adding amount of pure water of each test tube through a microcomputer.
All be equipped with infrared constant volume device 12 on the inside lateral wall of first ultrasonic groove 2, second ultrasonic groove 3 to be connected with pure water groove 5, when detecting that the liquid level of the inside test tube in first ultrasonic groove 2 or second ultrasonic groove 3 reaches the warning value, then feed back to pure water groove 5 and stop to continue to add the pure water, in order to realize the constant volume effect.
The spectrophotometric system 4 adopts a UV1500PC ultraviolet-visible spectrophotometer, and a waste liquid tank 8 is also arranged on a pipeline of the spectrophotometric system 4 connected with the second ultrasonic tank 3; the water bath device 10 and the ultrasonic device 11 adopt corresponding equipment with the common type in the field, and can respectively set the operation temperature and time.
In actual work, 5 g (accurate to 0.001 g) of homogenate sample (if water is added in the preparation process, the amount is converted according to the added water amount) is weighed, the homogenate sample is placed in a test tube of a water bath 1, 12.5 mL of 50 g/L saturated borax solution is added through a borax solution storage tank 1-1, about 150 mL of water with the temperature of about 70 ℃ is added through a pure water tank 5, the mixture is uniformly mixed, a water bath device 10 is started, the mixture is heated for 15 min in a boiling water bath, and then the mixture is cooled and placed to the room temperature; quantitatively transferring the extracting solution to a test tube of a first ultrasonic groove 2 through a first liquid transferring system 6, adding 5 mL of 106 g/L potassium ferrocyanide solution through a potassium ferrocyanide storage groove 2-2, starting an ultrasonic device 11 to shake up, and adding 5 mL of 220 g/L zinc acetate solution through a zinc acetate storage groove 2-1 to precipitate protein; adding water to 200mL through a pure water tank 5, performing constant volume through an infrared constant volume device 12, starting an ultrasonic device 11, shaking up, placing for 30 min, quantitatively transferring an extracting solution to a test tube of a second ultrasonic tank 3 through a second liquid transfer system 7, respectively adding 1 mL of naphthyl ethylenediamine hydrochloride and 2 mL of naphthyl ethylenediamine hydrochloride through a sulfanilic acid storage tank 3-1 and a naphthyl ethylenediamine hydrochloride storage tank 3-2, starting the ultrasonic device 11, shaking up, removing upper-layer fat, extracting a supernatant, discarding 30 mL of primary filtrate to a waste liquid tank 8, and allowing the residual filtrate to enter a spectrophotometry system 4 for detection.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. The utility model provides a nitrite preliminary treatment detection device in batches in food which characterized in that: comprises a water bath (1), a first ultrasonic groove (2), a second ultrasonic groove (3), a spectrophotometric system (4), a pure water groove (5), a first liquid-transferring system (6), a second liquid-transferring system (7), a water bath device (10) and an ultrasonic device (11); wherein the water bath (1), the first ultrasonic groove (2) and the second ultrasonic groove (3) are connected in sequence, a plurality of rows of test tubes are arranged in the water bath, and a water bath device (10) is arranged at the bottom of the water bath (1); the bottoms of the first ultrasonic groove (2) and the second ultrasonic groove (3) are provided with ultrasonic devices (11); the spectrophotometric system (4) is arranged at the outer side of the second ultrasonic groove (3) and is connected with each test tube in the second ultrasonic groove (3) through a pipeline; the pure water tank (5) is respectively connected with each test tube in the water bath tank (1), the first ultrasonic tank (2) and the second ultrasonic tank (3) through pipelines, the first pipetting system (6) is respectively and correspondingly connected with the test tubes at the same positions of the water bath tank (1) and the first ultrasonic tank (2) through a plurality of groups of pipelines, and the second pipetting system (7) is respectively and correspondingly connected with the test tubes at the same positions of the first ultrasonic tank (2) and the second ultrasonic tank (3) through a plurality of groups of pipelines.
2. The batch pretreatment detection device for nitrite in food according to claim 1, wherein: the water bath (1) comprises a borax solution storage tank (1-1), wherein a borax solution is stored in the water bath (1), and each test tube in the water bath (1) is connected through a pipeline.
3. The batch pretreatment detection device for nitrite in food according to claim 1, wherein: the first ultrasonic groove (2) comprises a zinc acetate groove (2-1) and a potassium ferrocyanide groove (2-2), and the solution for storing corresponding substances inside is respectively connected with each test tube in the first ultrasonic groove (2) through a pipeline.
4. The batch pretreatment detection device for nitrite in food according to claim 1, wherein: the second ultrasonic groove (3) comprises an aminobenzene sulfonic acid storage groove (3-1) and a naphthyl ethylenediamine hydrochloride storage groove (3-2), and solutions for storing corresponding substances are stored inside and are respectively connected with each test tube in the second ultrasonic groove (3) through pipelines.
5. The batch pretreatment detection device for nitrite in food according to claim 1, wherein: liquid transferring pumps are arranged in the first liquid transferring system (6) and the second liquid transferring system (7).
6. The batch pretreatment detection device for nitrite in food according to claim 1, wherein: and a heating device (9) is arranged on a main pipeline of the pure water tank (5) connected with the water bath (1).
7. The batch pretreatment detection device for nitrite in food according to claim 1, wherein: and the inner side walls of the first ultrasonic groove (2) and the second ultrasonic groove (3) are respectively provided with an infrared constant volume device (12) and are connected with a pure water groove (5).
8. The batch pretreatment detection device for nitrite in food according to claim 1, wherein: and a waste liquid tank (8) is also arranged on the pipeline of the spectrophotometry system (4) connected with the second ultrasonic tank (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123262421.6U CN216717960U (en) | 2021-12-23 | 2021-12-23 | Nitrite in food is preliminary treatment detection device in batches |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123262421.6U CN216717960U (en) | 2021-12-23 | 2021-12-23 | Nitrite in food is preliminary treatment detection device in batches |
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| Publication Number | Publication Date |
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| CN216717960U true CN216717960U (en) | 2022-06-10 |
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| CN202123262421.6U Active CN216717960U (en) | 2021-12-23 | 2021-12-23 | Nitrite in food is preliminary treatment detection device in batches |
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