Extraction device for detecting veterinary drug residues in poultry food

Abstract

The utility model relates to the technical field of poultry food detection, and discloses an extraction device for poultry food veterinary drug residue detection, which comprises a first filtering part, a second filtering part and a third filtering part, and different adsorption materials are arranged in the first filtering part, the second filtering part and the third filtering part; and a collecting frame. According to the utility model, through the cooperative use of the first filtering part, the second filtering part and the third filtering part, the first filtering part is used for removing larger particles, suspended solids or preliminary pollutants to play a role in physical filtering, and the second filtering part is used for adsorbing specific types of compounds or further removing pollutants to play a role in physical filtering; the third filtering part is used for further refining and purifying the fluid and is used for finally purifying or enriching specific target analytes, and the extracting piece and each connecting pipe are used for generating negative pressure or power to drive the fluid to pass through the whole system and ensure that the fluid can smoothly pass through each filtering part.

Description

Technical Field

[0001] The utility model relates to the technical field of poultry food detection, in particular to an extraction device for detecting veterinary drug residues in poultry food. Background Technique

[0002] Poultry food includes the meat of domestic and wild fowl and their processed products, mainly the meat and products of domestic fowl such as chickens, ducks, and geese. In all links of the production, processing, and circulation of poultry food, in order to ensure the safety and quality of poultry food, veterinary drug residue detection is required. Veterinary drug residue detection usually includes the collection and analysis of samples such as poultry meat and eggs. Animal-derived food samples, such as meat and eggs, need to be pretreated, including steps such as chopping and mixing the samples to ensure that the samples are uniform and easy to process. Then, an extraction device is used to extract veterinary drug residues in the samples. The samples after extraction and purification are detected by analytical instruments such as liquid chromatography-mass spectrometry.

[0003] In the prior art, the extraction device is responsible for accurately separating the veterinary drug components to be detected from complex biological samples. Single filtration is difficult to completely remove all potential interfering substances, or while trying to capture the target compounds, some non-target compounds are inadvertently brought in at the same time, resulting in deviations in the detection results, manifested as false positives and false negatives, and thus being wrongly judged as non-existent, seriously affecting the accuracy and reliability of the detection. Therefore, this application provides an extraction device for detecting veterinary drug residues in poultry food to meet the needs. Summary of the Invention

[0004] The technical problem to be solved by the utility model is to provide an extraction device for detecting veterinary drug residues in poultry food to solve the problem that single filtration in the existing extraction is difficult to completely remove all interfering substances, which easily leads to false positives and false negatives in the subsequent detection results.

[0005] To solve the above-mentioned problems, the utility model is realized through the following technical solutions:

[0006] An extraction device for detecting veterinary drug residues in poultry food, including a first filtration part, a second filtration part, and a third filtration part, different adsorption materials are arranged in the first filtration part, the second filtration part, and the third filtration part; a collection frame, which is connected to the first filtration part, the second filtration part, and the third filtration part respectively through a first connecting pipe, a second connecting pipe, and a third connecting pipe; an extraction part, which is connected to the second filtration part and the third filtration part respectively through a fourth connecting pipe and a fifth connecting pipe, and the extraction part is connected to the collection frame through a sixth connecting pipe.

[0007] A first valve, a second valve, a third valve, a fourth valve, a fifth valve, and a sixth valve are respectively provided on the first connecting pipe, the second connecting pipe, the third connecting pipe, the fourth connecting pipe, the fifth connecting pipe, and the sixth connecting pipe.

[0008] A feeding member is connected to the first filtering portion through a seventh connecting pipe. A first sealing cover is provided on the feeding member, and a handle is provided on the first sealing cover.

[0009] A seventh valve is provided on the seventh connecting pipe. The first filtering portion, the second filtering portion, and the third filtering portion each include: a second sealing cover; a pipe body detachably installed on the second sealing cover.

[0010] The first filtering portion, the second filtering portion, and the third filtering portion further include: a filtering member installed on the pipe body, the filtering member communicating with the pipe body; a discharge head installed on the filtering member.

[0011] The extraction member includes: a connecting cylinder; a piston movably installed in the connecting cylinder, the piston being in sealed contact with the inner wall of the connecting cylinder.

[0012] The extraction member further includes: a mounting member installed on the connecting cylinder; a moving member installed on the piston.

[0013] The present utility model provides an extraction device for detecting veterinary drug residues in poultry food. Compared with the prior art, it has the following beneficial effects:

[0014] Through the combined use of the first filtering portion, the second filtering portion, and the third filtering portion, the first filtering portion is used to remove larger particles, suspended substances, or preliminary pollutants, playing a role in physical filtration. The second filtering portion is used to adsorb specific types of compounds or further remove pollutants. The third filtering portion is for further refining and purifying the fluid, for final purification or enrichment of specific target analytes. The extraction member and each connecting pipe are used to generate negative pressure or power to drive the fluid through the entire system, ensuring that the fluid can smoothly pass through each filtering portion. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram proposed by the present utility model.

[0016] Figure 2 is a schematic structural diagram of the piston proposed by the present utility model.

[0017] Figure 3 is a schematic structural diagram of the first sealing cover proposed by the present utility model.

[0018] Figure 4 is a schematic structural diagram of the second sealing cover proposed by the present utility model.

[0019] The reference numerals in the figures are as follows:

[0020] 1. Extraction part; 101. Moving part; 102. Piston; 103. Mounting part; 104. Connecting cylinder; 2. Feeding part; 3. Seventh connecting pipe; 4. Seventh valve; 5. First filtering part; 6. First valve; 7. First connecting pipe; 8. Collection box; 9. Fifth connecting pipe; 10. Fifth valve; 11. Fourth valve; 12. Fourth connecting pipe; 13. Second filtering part; 14. Sixth connecting pipe; 15. Second valve; 16. Second connecting pipe; 17. First sealing cover; 18. Third valve; 19. Third connecting pipe; 20. Second sealing cover; 21. Discharge head; 22. Third filtering part; 23. Sixth valve; 24. Pipe body; 25. Filtering element. Detailed implementation manners

[0021] The following further elaborates the present utility model in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present utility model and not to limit the protection scope of the present utility model.

[0022] The following illustrates the implementation manners of the present utility model through specific specific examples. Those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification. The present utility model can also be implemented or applied through different specific implementation manners. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present utility model.

[0023] Referring to Figures 1 - 4 , an extraction device for detecting veterinary drug residues in poultry food, includes a first filtering part 5, a second filtering part 13, and a third filtering part 22. Different adsorption materials are provided in the first filtering part 5, the second filtering part 13, and the third filtering part 22; a collection box 8 is connected to the first filtering part 5, the second filtering part 13, and the third filtering part 22 respectively through a first connecting pipe 7, a second connecting pipe 16, and a third connecting pipe 19; an extraction part 1 is connected to the second filtering part 13 and the third filtering part 22 respectively through a fourth connecting pipe 12 and a fifth connecting pipe 9, and the extraction part 1 is connected to the collection box 8 through a sixth connecting pipe 14.

[0024] The first filtering part 5 serves as a preliminary purification unit, containing relatively coarse adsorption materials, for removing large particles, solid impurities in the sample, or preliminarily removing certain types of solvents and impurities, and providing a relatively pure fluid for the subsequent filtering parts.

[0025] The second filtering part 13 further purifies and enriches, contains more specific adsorption materials, adsorbs compounds with specific chemical properties, removes deeper interfering substances, and simultaneously captures the target analyte.

[0026] In the final purification stage of the third filtration section 22, a highly specific adsorption material is used to ensure that only the target analyte remains in the fluid, removing all remaining interfering substances and improving purity and recovery rate.

[0027] The collection box 8 receives the purified fluid flowing out from the first filtration section 5, the second filtration section 13, and the third filtration section 22, where preliminary collection and storage are carried out, or it is directly prepared for subsequent analysis.

[0028] The extraction part 1 pushes the fluid to flow in the system by generating negative pressure or positive pressure. The extraction part 1 can be a syringe or other fluid power source to ensure that the fluid can pass through each filtration section in sequence.

[0029] The first connecting pipe 7, the second connecting pipe 16, the third connecting pipe 19, the fourth connecting pipe 12, the fifth connecting pipe 9, and the sixth connecting pipe 14 are respectively provided with a first valve 6, a second valve 15, a third valve 18, a fourth valve 11, a fifth valve 10, and a sixth valve 23.

[0030] The first valve 6, the second valve 15, the third valve 18, the fourth valve 11, the fifth valve 10, and the sixth valve 23 can be selectively opened or closed to control whether the fluid passes through the corresponding connecting pipe, enabling the user to selectively allow the fluid to flow through a certain filtration section or skip it, adjust the purification process as needed. By adjusting the opening degree of the valve, the flow rate of the fluid passing through can be controlled, which is very important for ensuring the adsorption balance and maximizing the recovery rate during the extraction process. When maintaining the system or replacing the adsorption material of the filtration section, closing the relevant valves can isolate the affected part without having to stop the operation of the entire system.

[0031] The feeding part 2 is connected to the first filtration section 5 through the seventh connecting pipe 3. The feeding part 2 is provided with a first sealing cover 17, and the first sealing cover 17 is provided with a handle.

[0032] The feeding part 2 serves as the entrance for the sample to enter the entire extraction system. It is designed as an opening for accommodating samples such as liquid, semi-solid, or powder samples. The feeding part 2 ensures that the sample can enter the first filtration section 5 smoothly and without being contaminated for preliminary treatment.

[0033] The seventh connecting pipe 3 connects the feeding part 2 and the first filtration section 5 to ensure that the sample can be smoothly transferred from the feeding part 2 into the first filtration section 5. The material and size of the connecting pipe need to ensure that they will not cause adsorption or reaction to the sample, so as not to affect the subsequent extraction effect.

[0034] The first sealing cover 17 is used to close the opening of the feeding part 2 to prevent external air or impurities from entering the system when the sample is not ready to be introduced. The first sealing cover 17 has good sealing performance to maintain the negative pressure or positive pressure state inside the system, and at the same time, it also needs to be easy to open and close.

[0035] The handle facilitates the user's manual operation and easily opens or closes the sealing cover 17, ensuring the safety and convenience of the operation.

[0036] A seventh valve 4 is provided on the seventh connecting pipe 3. The first filtering part 5, the second filtering part 13, and the third filtering part 22 all include: a second sealing cover 20; a pipe body 24 detachably installed on the second sealing cover 20.

[0037] The seventh valve 4 controls the flow of fluid from the feeding part 2 to the first filtering part 5. By opening or closing this valve, the operator can precisely manage when and at what rate the sample enters the first filtering part 5.

[0038] The second sealing cover 20 is used to seal the filtering part and maintain the tightness of the system. The second sealing cover 20 ensures that during the extraction process, the internal pressure conditions of the system will not be affected by leakage, and at the same time prevents external impurities from entering the system and affecting the extraction effect. The detachable design of the second sealing cover 20 facilitates regular cleaning, inspection, and replacement of the filtering material.

[0039] The first filtering part 5, the second filtering part 13, and the third filtering part 22 further include: a filtering element 25 installed on the pipe body 24, and the filtering element 25 is in communication with the pipe body 24; a discharge head 21 installed on the filtering element 25.

[0040] The filtering element 25 is filled with a specific adsorption material inside. The design of the filtering element 25 ensures that the fluid can uniformly contact the adsorption material, thereby achieving effective adsorption and filtration. In addition, the structure of the filtering element 25 also includes a microporous membrane or a filter screen to prevent the particles of the adsorption material from being carried into the next-stage filtering part and protecting the smooth flow of the entire system.

[0041] The discharge head 21 is responsible for guiding the filtered and purified fluid to the collection frame 8, ensuring that the fluid can be smoothly and evenly distributed to the next-stage treatment, avoiding the formation of turbulence, which helps to improve the extraction efficiency and recovery rate of the entire system.

[0042] The extraction part 1 includes: a connecting cylinder 104; a piston 102 movably installed inside the connecting cylinder 104, and the piston 102 is in sealed contact with the inner wall of the connecting cylinder 104.

[0043] The connecting cylinder 104 enables the piston 102 to move within the space inside the connecting cylinder 104. When the piston 102 moves, it can be in close contact with the inner wall of the connecting cylinder 104 to form a good seal, preventing gas or fluid leakage and ensuring that the change in pressure can be effectively transmitted.

[0044] The piston 102 can reciprocate along the axial direction of the cylinder. When the piston 102 moves downward, it compresses the gas in the connecting cylinder 104, generating a positive pressure. On the contrary, when the piston 102 moves upward, the volume in the connecting cylinder 104 increases, generating a negative pressure, thereby attracting the fluid into the system.

[0045] The extraction member 1 further includes: a mounting member 103 mounted on the connecting cylinder 104; and a moving member 101 mounted on the piston 102.

[0046] The moving member 101 is connected to the piston 102 to facilitate the operator to manually or automatically move the piston 102. In a manually operated system, the moving member 101 can be a handle or a lever, allowing the operator to move the piston 102 up and down by physical force, thereby generating the required negative or positive pressure. In an automated system, the moving member 101 can be part of a motor, a cylinder or a hydraulic mechanism, and the movement of the piston 102 is controlled by an electronic or mechanical signal to achieve automation and precise control.

[0047] In the technical solution provided by the present utility model, during use, the detection liquid is added through the feeding member 2, the seventh valve 4 is opened, so that the detection liquid enters the first filtering part 5 through the seventh connecting pipe 3, and the detection liquid is filtered by the first filtering part 5. The seventh valve 4 is closed and the first valve 6 is opened, so that the filtered detection liquid flows into the collecting frame 8 through the first connecting pipe 7. The first valve 6 is closed, the sixth valve 23 is opened, the moving member 101 is pulled upward, driving the piston 102 to move upward, so that a negative pressure is generated in the connecting cylinder 104, driving the detection liquid in the collecting frame 8 to flow into the connecting cylinder 104 through the sixth connecting pipe 14. The sixth valve 23 is closed, the fourth valve 11 is opened, the moving member 101 is pushed downward, driving the piston 102 to move downward, and the detection liquid flows into the second filtering part 13 through the fourth connecting pipe 12, and the detection liquid is filtered by the second filtering part 13. The fourth valve 11 is closed, the second valve 15 is opened, and the detection liquid flows into the collecting frame 8 through the second connecting pipe 16. The above actions are repeated, so that the detection liquid in the collecting frame 8 enters the connecting cylinder 104. Then the sixth valve 23 is closed, the fifth valve 10 is opened, the moving member 101 is adjusted, so that the detection liquid enters the third filtering part 22 through the fifth connecting pipe 9, and the detection liquid is filtered by the third filtering part 22. The fifth valve 10 is closed, the third valve 18 is opened, the detection liquid flows into the collecting frame 8 through the third connecting pipe 19, the third valve 18 is closed, and the detection liquid in the collecting frame 8 is taken out for detection.

[0048] Accordingly, while the present utility model has been described herein with reference to its specific embodiments, modifications, various changes and substitutions are also within the above disclosure, and it should be understood that in some cases, some features of the present utility model will be adopted without corresponding use of other features without departing from the scope and spirit of the proposed utility model. Therefore, many modifications can be made to adapt a particular environment or material to the substantial scope and spirit of the present utility model. The present utility model is not intended to be limited to the specific terms used in the following claims and / or the specific embodiments disclosed as the best mode contemplated for carrying out the present utility model, but the present utility model will include any and all embodiments and equivalents falling within the scope of the appended claims. Accordingly, the scope of the present utility model will be determined only by the appended claims.

Claims

1. An extraction device for detecting veterinary drug residues in poultry food, characterized in that, Comprising: A first filtering part (5), a second filtering part (13) and a third filtering part (22), different adsorption materials are provided in the first filtering part (5), the second filtering part (13) and the third filtering part (22); A collection box (8), which is connected to the first filtering part (5), the second filtering part (13) and the third filtering part (22) respectively through a first connecting pipe (7), a second connecting pipe (16) and a third connecting pipe (19); An extraction part (1), which is connected to the second filtering part (13) and the third filtering part (22) respectively through a fourth connecting pipe (12) and a fifth connecting pipe (9), and the extraction part (1) is connected to the collection box (8) through a sixth connecting pipe (14).

2. The extraction device for detecting veterinary drug residues in poultry food according to claim 1, wherein: A first valve (6), a second valve (15), a third valve (18), a fourth valve (11), a fifth valve (10) and a sixth valve (23) are respectively provided on the first connecting pipe (7), the second connecting pipe (16), the third connecting pipe (19), the fourth connecting pipe (12), the fifth connecting pipe (9) and the sixth connecting pipe (14).

3. An extraction device for detecting veterinary drug residues in poultry food according to claim 1, wherein: Further comprising: A feeding part (2), which is connected to the first filtering part (5) through a seventh connecting pipe (3), a first sealing cover (17) is provided on the feeding part (2), and a handle is provided on the first sealing cover (17).

4. An extraction device for detecting veterinary drug residues in poultry food according to claim 1, characterized in that: A seventh valve (4) is provided on the seventh connecting pipe (3), and the first filtering part (5), the second filtering part (13) and the third filtering part (22) all include: A second sealing cover (20); A pipe body (24), which is detachably installed on the second sealing cover (20).

5. An extraction device for detecting veterinary drug residues in poultry food according to claim 4, characterized in that: The first filtering part (5), the second filtering part (13) and the third filtering part (22) further include: A filtering element (25), which is installed on the pipe body (24), and the filtering element (25) is communicated with the pipe body (24); A discharge head (21), which is installed on the filtering element (25).

6. The extraction device for detecting veterinary drug residues in poultry food according to claim 1, characterized in that: The extraction part (1) includes: A connecting cylinder (104); A piston (102), which is movably installed in the connecting cylinder (104), and the piston (102) is in sealed contact with the inner wall of the connecting cylinder (104).

7. An extraction device for detecting veterinary drug residues in poultry food according to claim 6, characterized in that The extraction part (1) further includes: A mounting part (103), which is installed on the connecting cylinder (104); A moving part (101), which is installed on the piston (102).

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