CN217520852U - Food pollutant draws purifier - Google Patents

Abstract

A food pollutant extraction and purification device comprises an extraction pipe, a purification pipe and a liquid leakage device, wherein one end of the extraction pipe is provided with an opening, the opening part of the extraction pipe is communicated with the purification pipe, two ends of the purification pipe are provided with openings, one end of the purification pipe is provided with an opening which is communicated with the extraction pipe, and the other end of the purification pipe is provided with an opening which is communicated with the liquid leakage device; the food pollutant extracting and purifying device designed by the scheme is combined with the QuEChERS principle and used for the rapid extraction and purification pretreatment of pesticide residues and illegal additives in food, and the specific principle is that after a sample is extracted by an extraction reagent, a matrix dispersion extraction mechanism is utilized, a purification adsorbent is adopted to remove most of interferents (organic acid, fatty acid, carbohydrate and the like) in a matrix, or a specific adsorbent (such as a molecular imprinting adsorbent and the like) is adopted for enrichment and then analysis of target pollutants, so that the purification purpose is achieved.

Description

Food pollutant draws purifier

Technical Field

The utility model belongs to the technical field of food purification equipment, concretely relates to food pollutant draws purifier.

Background

Analysis of food contamination residues is an analytical technique for trace components in complex mixtures. The pretreatment is the part with the longest time consumption and the largest workload in food detection, and the accuracy and precision of analysis are determined by the quality of the pretreatment. The development trend of pesticide chemical pollutant residue detection technology is that the sample dosage is less, the reagent consumption is less, and the analysis speed is fast. How to realize multi-residue analysis, and ensure the recovery rate while effectively removing impurities is a difficult point of the whole pretreatment process.

QuEChERS (Quick, Easy, Cheap, Effective, Rugged, Safe) is a fast sample pretreatment technology for food detection which is newly developed internationally in recent years, and has the characteristics of quickness, simplicity, cheapness, effectiveness, reliability and safety. The principle is similar to that of High Performance Liquid Chromatography (HPLC) and Solid Phase Extraction (SPE), and the impurities in the matrix are adsorbed by utilizing the interaction between the adsorbent filler and the impurities in the matrix, so that the purposes of impurity removal and purification are achieved.

Therefore, the traditional QuEChERS purification generally uses a plurality of centrifuge tubes for operation, the middle of the purification needs centrifugation and transfer and is relatively complex, the scheme is to provide a food pollutant extraction and purification device which is combined with the QuEChERS technology and used for the rapid extraction and purification pretreatment of pesticide residues and illegal additives in food, after a sample is extracted by an extraction reagent, a matrix dispersion extraction mechanism is utilized, a purification adsorbent is adopted to remove most of interferents (organic acid, fatty acid, carbohydrate and the like) in a matrix, or a specific adsorbent (such as a molecular imprinting adsorbent and the like) is adopted for enrichment and then analysis of target pollutants, the purification purpose is achieved, the extraction and purification efficiency and the functionality are effectively improved, and the technical problems are solved.

It should be noted that the above background description is only for the sake of clarity and complete description of the technical solutions of the present invention, and is set forth for facilitating understanding of those skilled in the art. These solutions are not considered to be known to the person skilled in the art merely because they have been set forth in the background section of the present invention.

Disclosure of Invention

In order to overcome the defects in the prior art, the utility model aims to provide a food pollutant extracting and purifying device.

In order to achieve the above objects and other related objects, the present invention provides a technical solution: the utility model provides a food contamination draws purifier, includes extraction tube, purge tube and hourglass liquid ware, the extraction tube is one end opening setting, and its opening part and purge tube intercommunication, the purge tube is both ends opening setting, and its one end opening intercommunication extraction tube, other end opening intercommunication leak the liquid ware.

Preferably, the purifying pipe is provided with a plurality of purifying pipes which are connected in series from top to bottom, an opening at the upper end of the purifying pipe positioned at the topmost part is communicated with the extracting pipe, and an opening at the lower end of the purifying pipe positioned at the bottommost part is communicated with the liquid leakage device.

Preferably, the extraction pipe and the purification pipe, the two purification pipes and the purification pipe and the liquid leakage device are detachably connected through threads.

Preferably, the sieve plates are detachably arranged at the communication parts between the extraction pipe and the purification pipe, between the two purification pipes and between the purification pipes and the liquid leakage device.

Preferably, the port portion of the purification tube is detachably connected with a tube cover.

Preferably, the pipe wall of the purification pipe is provided with scales.

Preferably, a plug is detachably arranged at the liquid outlet below the liquid leakage device.

Because of the application of the technical scheme, compared with the prior art, the utility model the advantage that has as follows:

the food pollutant of this scheme design draws purifier combines the QuEChERS technique for in the food pesticide residue, the quick extraction of illegal additive purifies the pretreatment, and device structural design is simple ingenious, uses convenient operation swift, can multiple combination as required, can draw simultaneously, purify, preceding processing processes such as enrichment separation, can use repeatedly simultaneously, practices thrift the cost, avoids the environment dirty.

Drawings

Fig. 1 is a schematic structural diagram of embodiment 1.

Fig. 2 is a schematic structural diagram of embodiment 2.

FIG. 3 is a schematic view of a structure of a purge tube with an end cap.

In the attached figures, the extraction tube 1, the purification tube 2, the liquid leakage device 3, the sieve plate 4, the tube cover 5 and the plug 6.

Detailed Description

The following description is given for illustrative embodiments of the present invention, and other advantages and effects of the present invention will be apparent to those skilled in the art from the disclosure of the present invention.

Please refer to fig. 1 to fig. 3. It should be understood that, in the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, or the directions or positional relationships that the products of the present invention are usually placed when they are used, and are only for the convenience of describing the present invention and simplifying the description, but not for indicating or implying that the indicated device or element must have a specific direction, be constructed and operated in a specific direction, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance. The terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should be noted that, unless otherwise specifically stated or limited, the terms "disposed," "mounted," "connected" and "connected" are to be construed broadly and may include, for example, a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection through an intermediary, and a communication between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1:

as shown in fig. 1, the scheme provides a food pollutant extraction and purification device, which comprises an extraction pipe 1, a purification pipe 2 and a liquid leakage device 3, wherein one end of the extraction pipe 1 is open, the opening part of the extraction pipe is provided with a sieve plate 4 and is communicated with the purification pipe 2, two ends of the purification pipe 2 are open, one end of the purification pipe is open and communicated with the extraction pipe 1, and the other end of the purification pipe is open and communicated with the liquid leakage device 3; when the device is used, a sample and an extraction reagent are placed in the extraction tube 1, pesticide residues, illegal additives and the like in the sample are extracted, after the extraction is finished, the port part of the extraction tube 1 is connected with the purification tube 2, and a purification adsorbent is added and shaken; and (3) after purification, taking the purified liquid from the bottom of the purification tube 2 through a liquid leakage device 3, and detecting after concentration and redissolution or directly detecting.

Example 2:

as shown in fig. 2, the scheme provides a food pollutant extraction and purification device, which comprises an extraction pipe 1, purification pipes 2 and a liquid leakage device 3, wherein one end of the extraction pipe 1 is provided with an opening, a sieve plate 4 is arranged at the opening part of the extraction pipe and is communicated with the purification pipes 2, the purification pipes 2 are provided with openings at two ends, a plurality of purification pipes 2 are arranged, the purification pipes are arranged in series from top to bottom, the upper end opening of the purification pipe 2 at the topmost part is communicated with the extraction pipe 1, and the lower end opening of the purification pipe 2 at the bottommost part is communicated with the liquid leakage device 3; when the device is used, a sample and an extraction reagent are placed in the extraction tube 1, pesticide residues, illegal additives and the like in the sample are extracted, after extraction is completed, the port part of the extraction tube 1 is connected with the purification tubes 2, different adsorbents can be placed in the purification tubes 2, for example, the upper layer is used for purifying interfering substances, and the lower layer is used for specific adsorption; and after purification, the purified liquid is taken from the bottom of the purifying tube 2 at the bottommost end through a liquid leakage device 3, and detection is carried out after concentration and redissolution or direct detection.

Preferred embodiments:

on the basis of the above embodiments 1 and 2, the extraction pipe 1 and the purification pipe 2, the two purification pipes 2, and the purification pipe 2 and the leakage device 3 are detachably connected by threads; all connection modes of the equipment adopt detachable threaded connection, and the disassembly is convenient.

On the basis of the above embodiments 1 and 2, sieve plates 4 are detachably arranged at the communication parts between the extraction pipe 1 and the purification pipes 2, between the two purification pipes 2 and between the purification pipes 2 and the liquid leakage device 3; the sieve plate 4 can sieve out impurities such as adsorbent in the purified liquid, and the purity of the extracted purified liquid is ensured.

In addition to the above embodiments 1 and 2, as shown in fig. 3, when the purge tube 2 needs to be oscillated, the extraction tube 1 can be removed and the tube cap 5 can be replaced to oscillate.

On the basis of the embodiment 1 and the embodiment 2, the pipe wall of the purifying pipe 2 is provided with scales, so that a worker can conveniently observe the change of liquid in the pipe.

On the basis of the above embodiments 1 and 2, a plug 6 is detachably arranged at the liquid outlet below the liquid leakage device 3; the plug 6 can plug the outlet of the liquid leakage device 3 to prevent the purified liquid from dripping when the liquid leakage device 3 does not need to take the liquid, and the plug 6 is detached when the liquid needs to be taken after the purification is finished.

The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention shall be covered by the claims of the present invention.

Claims (7)

1. The utility model provides a food contamination draws purifier which characterized in that: the liquid leakage device comprises an extraction pipe, a purification pipe and a liquid leakage device, wherein the extraction pipe is arranged with an opening at one end, the opening part of the extraction pipe is communicated with the purification pipe, the purification pipe is arranged with openings at two ends, the opening at one end of the purification pipe is communicated with the extraction pipe, and the opening at the other end of the purification pipe is communicated with the liquid leakage device.

2. The food pollutant extracting and purifying device according to claim 1, characterized in that: the purifying tube is provided with a plurality of purifying tubes which are connected in series from top to bottom, an opening at the upper end of the purifying tube at the top is communicated with the extracting tube, and an opening at the lower end of the purifying tube at the bottom is communicated with the liquid leakage device.

3. The device for extracting and purifying food pollutants as claimed in any one of claims 1 to 2, wherein: the extraction tube and the purification tube, the two purification tubes and the purification tube and the liquid leakage device are detachably connected through threads.

4. The device for extracting and purifying food pollutants as claimed in any one of claims 1 to 2, wherein: the sieve plates are detachably arranged at the communication positions between the extraction pipe and the purification pipe, between the two purification pipes and between the purification pipes and the liquid leakage device.

5. The food pollutant extracting and purifying device according to claim 3, characterized in that: the port part of the purification pipe is detachably connected with the pipe cover.

6. The food pollutant extracting and purifying device according to claim 1, characterized in that: and scales are arranged on the pipe wall of the purifying pipe.

7. The food pollutant extracting and purifying device according to claim 1, characterized in that: and a plug is detachably arranged at the liquid outlet below the liquid leakage device.

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