A device for extracting pesticide and veterinary drug residues in animal-derived food

Abstract

The utility model discloses a device for extracting pesticide residues in animal-derived food, including an extraction cylinder, wherein the outer side walls of the top and bottom of the extraction cylinder are both provided with threads, and a top cover is fixed to the top of the extraction cylinder, a detachable second filter assembly is fixed to the bottom surface of the extraction cylinder, a cavity is provided at the top of the top cover, and a cover plate is fixedly connected to the top of the top cover. In the utility model, an extraction cylinder, a top cover, a stirring assembly, a first filter assembly, and a second filter assembly are provided. After adding an animal-derived food sample to the filter cylinder of the first filter assembly, the stirring assembly is used to stir water, chemical drugs, and the sample, thereby extracting the residual toltrazuril, toltrazuril sulfone, and toltrazuril sulfone in the food sample. After the extraction is completed, the filter cylinder is disassembled from the top cover to quickly separate the sample from the extract, and then the extract and the sample are further separated by the second filter assembly, thereby improving work efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of pesticide and veterinary drug residue extraction, in particular to a device for extracting pesticide and veterinary drug residues in animal-derived food. Background Art

[0002] Animal-derived foods refer to all edible animal tissues, eggs and milk, including meat and its products (including animal organs), aquatic animal products, etc. In order to ensure food safety, it is necessary to test the pesticide and veterinary drug residues in animal-derived foods. The detected residues mainly include Toltrazuril, Toltrazuril sulfone and Toltrazuril sulfone. The extraction method is to add acetonitrile as the extraction solvent and mix it with the food sample, and then test the supernatant after filtering.

[0003] Extraction requires the use of an extraction device. The patent with publication number CN212440132U discloses an extraction device for pesticide residues in animal-derived foods. The device adds an appropriate amount of water to the water storage space formed by the water storage cylinder and the internal threaded cover. When a small air pump is used to transport air into the extraction cylinder, the water in the water storage cylinder moistens the dust in the air flow, preventing the dust from entering the extraction cylinder with the air flow, which is beneficial to improving the accuracy of the extraction. However, after the extraction is completed, the device still needs to use other filtering devices to separate the extracted liquid and food samples. The use is not simple and convenient, and the device is large and not easy to carry. In addition, the device cannot provide the temperature required for extraction to improve the extraction efficiency, so it needs further improvement. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a device for extracting pesticide and veterinary drug residues in animal-derived food.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a device for extracting pesticide and veterinary drug residues in animal-derived food, comprising an extraction cylinder, the outer walls of the top and bottom ends of the extraction cylinder are both provided with threads, and a top cover is fixed to the top end of the extraction cylinder, a detachable second filter assembly is fixed to the bottom surface of the extraction cylinder, a cavity is provided at the top end of the top cover, and a cover plate is fixedly connected to the top of the top cover, a stirring assembly is installed together inside the cavity and below the top cover, a connecting ring is fixed to the lower surface of the top cover, and a detachable first filter assembly is fixedly connected to the outer wall of the connecting ring by threads, an electric heating plate and a battery are installed inside the cavity, a heat-conducting rod is fixedly connected to the bottom of the electric heating plate, and the bottom end of the heat-conducting rod passes through the top cover and extends to below the top cover.

[0006] Furthermore, an internal thread groove is provided at the bottom of the top cover, and the internal thread groove is rotatably connected to the outer side wall of the top end of the extraction tube.

[0007] Furthermore, the first filter assembly includes an annular plate, and the annular plate is rotatably connected to the outer side wall of the connecting ring through threads, and a filter cylinder is fixedly connected to the bottom end of the annular plate.

[0008] Furthermore, the stirring assembly includes a motor fixed inside the cavity and a vertical shaft located below the top cover, the top end of the vertical shaft passes through the top cover and is fixedly connected to the output end of the motor, and the bottom of the vertical shaft is fixedly connected with a stirring blade, and the stirring blade is located inside the filter cylinder.

[0009] Furthermore, a switch button is provided on the outer side wall of the top cover, and the motor and the electric heating plate are electrically connected to the switch button.

[0010] Furthermore, the outer side wall of the top cover is provided with a charging port electrically connected to the battery, and the motor and the electric heating plate are both electrically connected to the battery.

[0011] Furthermore, the second filter assembly includes a bottom cover, and the inner wall of the bottom cover is provided with an internal thread matching the thread of the outer wall of the extraction tube, and a reserved opening is opened in the middle of the bottom cover, and a fine filter is fixed inside the reserved opening.

[0012] Beneficial effects of the utility model:

[0013] 1. When the utility model is in use, the device for extracting pesticide and veterinary drug residues in animal-derived food is provided with an extraction cylinder, a top cover, a stirring component, a first filter component and a second filter component. After the animal-derived food sample is added to the filter cylinder of the first filter component, the stirring component is used to stir water, chemical drugs and the sample, so as to extract the residual toltrazuril, toltrazuril sulfone and toltrazuril sulfone in the food sample. After the extraction is completed, the filter cylinder is disassembled from the top cover to quickly separate the sample and the extract, and then the extract and the sample are further separated by the second filter component, thereby improving work efficiency. The device has a compact structure and is relatively convenient to clean and carry.

[0014] 2. When the utility model is in use, the device for extracting pesticide and veterinary drug residues in animal-derived food is provided with an electric heating plate and a heat-conducting rod, through which water, chemical drugs and samples can be heated, and the required temperature is provided for extraction during the stirring process, thereby improving the efficiency of the extraction. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the description of the specific implementation methods will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1: A three-dimensional diagram of the utility model;

[0017] Figure 2 : An overall cross-sectional view of the utility model;

[0018] Figure 3 : A three-dimensional diagram of the first filter assembly of the utility model;

[0019] Figure 4 : A cross-sectional view of the extraction cartridge and the second filter assembly of the utility model.

[0020] The reference numerals are as follows:

[0021] 1. Extraction cylinder; 2. Top cover; 21. Internal thread groove; 22. Cavity; 23. Cover plate; 3. Motor; 4. Vertical axis; 5. Stirring blade; 6. First filter assembly; 61. Ring plate; 62. Filter cylinder; 7. Connecting ring; 8. Electric heating plate; 9. Heat conducting rod; 10. Switch button; 11. Charging port; 12. Second filter assembly; 121. Bottom cover; 122. Reserved port; 123. Fine filter; 13. Battery. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] like Figure 1-Figure 4 As shown, it relates to an extraction device for pesticide and veterinary drug residues in animal-derived food, including an extraction cylinder 1, the outer walls of the top and bottom ends of the extraction cylinder 1 are both provided with threads, and a top cover 2 is fixed to the top of the extraction cylinder 1, a detachable second filter component 12 is fixed to the bottom surface of the extraction cylinder 1, a cavity 22 is provided at the top of the top cover 2, and a cover plate 23 is fixedly connected to the top of the top cover 2, a stirring component is installed inside the cavity 22 and below the top cover 2, a connecting ring 7 is fixed to the lower surface of the top cover 2, and a detachable first filter component 6 is fixedly connected to the outer wall of the connecting ring 7 by threads, an electric heating plate 8 and a battery 13 are installed inside the cavity 22, a heat-conducting rod 9 is fixedly connected to the bottom of the electric heating plate 8, and the bottom end of the heat-conducting rod 9 passes through the top cover 2 and extends to the bottom of the top cover 2.

[0024] An internal thread groove 21 is formed at the bottom of the top cover 2 , and the internal thread groove 21 is rotatably connected to the outer wall of the top end of the extraction tube 1 .

[0025] The top cover 2 can be fixed to the top of the extraction cylinder 1 by rotating the threads, and can also be unscrewed and removed from the top of the extraction cylinder 1.

[0026] The first filter assembly 6 includes an annular plate 61 , and the annular plate 61 is rotatably connected to the outer wall of the connecting ring 7 via threads, and a filter cylinder 62 is fixedly connected to the bottom end of the annular plate 61 .

[0027] Therefore, the first filter assembly 6 can be twisted off from the surface of the connecting ring 7, or can be connected to the surface of the connecting ring 7 by screw thread rotation.

[0028] The stirring assembly includes a motor 3 fixed inside the cavity 22 and a vertical shaft 4 located below the top cover 2. The top end of the vertical shaft 4 passes through the top cover 2 and is fixedly connected to the output end of the motor 3. The bottom of the vertical shaft 4 is fixedly connected with a stirring blade 5, and the stirring blade 5 is located inside the filter cylinder 62.

[0029] By driving the vertical shaft 4 and the stirring blade 5 to rotate through the motor 3, water, chemical agents and food samples can be stirred, thereby improving the extraction efficiency.

[0030] A switch button 10 is disposed on the outer side wall of the top cover 2 , and the motor 3 and the electric heating plate 8 are both electrically connected to the switch button 10 .

[0031] The motor 3 and the electric heating plate 8 can be controlled to work by the switch button 10 .

[0032] The outer side wall of the top cover 2 is provided with a charging port 11 electrically connected to the battery 13, and the motor 3 and the electric heating plate 8 are both electrically connected to the battery 13. The battery 13 can be used to power the motor 3 and the electric heating plate 8, and the battery 13 can be charged through the charging port 11, making the device more convenient to use.

[0033] The second filter assembly 12 includes a bottom cover 121 , and the inner wall of the bottom cover 121 is provided with an internal thread matching the thread of the outer wall of the extraction tube 1 . A reserved opening 122 is opened in the middle of the bottom cover 121 , and a fine filter 123 is fixed inside the reserved opening 122 .

[0034] The bottom cover 121 can be rotatably connected to the bottom and top surfaces of the extraction cylinder 1 through internal threads. When the bottom cover 121 is located on the top surface of the extraction cylinder 1, the solution in the extraction cylinder 1 is poured out, and the fine filter 123 can be used to further filter the extraction solution.

[0035] Working principle: put the animal-derived food sample to be extracted into the filter cylinder 62, then add the extraction agent and water into the extraction cylinder 1, then screw the filter cylinder 62 onto the surface of the connecting ring 7, then screw the top cover 2 onto the top of the extraction cylinder 1, at this time the sample in the filter cylinder 62 will be immersed in the extraction agent and water, then turn on the electric heating plate 8 and the motor 3 through the switch button 10, drive the vertical shaft 4 and the stirring blade 5 to rotate through the motor 3, so as to achieve the stirring of the extraction agent, water and sample, and the electric heating plate 8 heats the mixed solution through the heat conducting rod 9 to improve the extraction efficiency. After the extraction is completed, unscrew the top cover 2 from the top of the extraction cylinder 1, and directly take out the sample when the filter cylinder 62 is lifted out from the inside of the extraction cylinder 1, so as to achieve the preliminary separation of the sample and the extracted solution, then screw the bottom cover 121 onto the top of the extraction cylinder 1, and then pour out the extraction solution inside the extraction cylinder 1, and further filter the solution with the fine filter 123.

[0036] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A device for extracting pesticide and veterinary drug residues in animal-derived food, comprising an extraction cylinder (1), characterized in that: The outer walls of the top and bottom ends of the extraction cylinder (1) are both provided with threads, and a top cover (2) is fixed to the top end of the extraction cylinder (1), and a detachable second filter assembly (12) is fixed to the bottom surface of the extraction cylinder (1), a cavity (22) is provided at the top end of the top cover (2), and a cover plate (23) is fixedly connected to the top of the top cover (2), a stirring assembly is installed inside the cavity (22) and below the top cover (2), a connecting ring (7) is fixed to the lower surface of the top cover (2), and a detachable first filter assembly (6) is fixedly connected to the outer wall of the connecting ring (7) through threads, an electric heating plate (8) and a storage battery (13) are installed inside the cavity (22), and a heat conducting rod (9) is fixedly connected to the bottom of the electric heating plate (8), and the bottom end of the heat conducting rod (9) passes through the top cover (2) and extends to the bottom of the top cover (2).

2. The device for extracting pesticide and veterinary drug residues in animal-derived food according to claim 1, characterized in that: An internal thread groove (21) is provided at the bottom of the top cover (2), and the internal thread groove (21) is rotatably connected to the outer side wall of the top end of the extraction cylinder (1).

3. The device for extracting pesticide and veterinary drug residues in animal-derived food according to claim 1, characterized in that: The first filter assembly (6) comprises an annular plate (61), and the annular plate (61) is rotatably connected to the outer wall of the connecting ring (7) via a thread, and a filter cylinder (62) is fixedly connected to the bottom end of the annular plate (61).

4. The device for extracting pesticide and veterinary drug residues in animal-derived food according to claim 3, characterized in that: The stirring assembly comprises a motor (3) fixed inside the cavity (22) and a vertical shaft (4) located below the top cover (2); the top end of the vertical shaft (4) passes through the top cover (2) and is fixedly connected to the output end of the motor (3); the bottom of the vertical shaft (4) is fixedly connected to a stirring blade (5); and the stirring blade (5) is located inside the filter cylinder (62).

5. The device for extracting pesticide and veterinary drug residues in animal-derived food according to claim 4, characterized in that: A switch button (10) is provided on the outer side wall of the top cover (2), and the motor (3) and the electric heating plate (8) are both electrically connected to the switch button (10).

6. The device for extracting pesticide and veterinary drug residues in animal-derived food according to claim 4, characterized in that: The outer wall of the top cover (2) is provided with a charging port (11) electrically connected to the storage battery (13), and the motor (3) and the electric heating plate (8) are both electrically connected to the storage battery (13).

7. The device for extracting pesticide and veterinary drug residues in animal-derived food according to claim 1, characterized in that: The second filter assembly (12) comprises a bottom cover (121), and the inner wall of the bottom cover (121) is provided with an internal thread matching the thread of the outer wall of the extraction cylinder (1), and a reserved opening (122) is opened in the middle of the bottom cover (121), and a fine filter (123) is fixed inside the reserved opening (122).

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