Sampling device

Abstract

The utility model belongs to the field of sampling, particularly relates to a sampling device, and provides the following scheme aiming at the problems that the existing light crops are easy to float in the sampling process, surface attachments are difficult to remove and the sealing performance of the sampling device is poor, the sampling device comprises a box body, and a tray mechanism is arranged in the box body; according to the pesticide residue extraction device, it can be ensured that light crops are stably immersed in a buffer solution, the pesticide residue extraction efficiency is improved, attachments on the surfaces of the crops are efficiently removed through rapid up-and-down movement of the screen, the accuracy of a detection result is improved, and the sealing performance of the sampling device is ensured; meanwhile, the device is convenient to disassemble, clean, maintain and use, and the working efficiency and the user experience are improved.

Description

Technical Field

[0001] This utility model relates to the field of sampling technology, and in particular to a sampling device. Background Technology

[0002] Pesticide residue detection technology is one of the important means to ensure food safety. As a basic tool in this technical process, the rationality of the design and the quality of the performance of the sampling device are directly related to the accuracy and reliability of the detection results. In the field of pesticide residue detection technology, especially in the sampling process of crop samples, traditional methods often face many challenges.

[0003] First, lightweight agricultural products such as leafy vegetables, due to their light weight and large volume, easily float on the surface of the buffer solution during sampling. This floating phenomenon not only hinders the full contact between the agricultural products and reagents, resulting in the inability to effectively extract pesticide residues, but also increases the difficulty and complexity of the sampling operation. Second, the surface of agricultural products often has various impurities such as dust and pesticide residue particles attached to it. The presence of these attachments can interfere with the accuracy of the test results. However, due to the characteristics of lightweight agricultural products, traditional external removal methods such as stirring, shaking, or wiping are often difficult to remove these attachments quickly and effectively, and may even damage the agricultural product sample due to improper operation. In addition, the sealing performance of the sampling device is also one of the important factors affecting the test results. If the device is not sealed well during the sampling process, it will not only lead to the volatilization and contamination of the buffer solution, but may also introduce external impurities, thereby affecting the accuracy of the test results. Therefore, a sampling device is proposed. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies, such as the tendency of lightweight agricultural products to float on the surface of the buffer solution during sampling due to their light weight and large volume. This floating phenomenon not only hinders the full contact between the agricultural products and reagents, resulting in the ineffective extraction of pesticide residues, but also increases the difficulty and complexity of the sampling operation. Secondly, the surface of agricultural products often has various impurities such as dust and pesticide residue particles attached to it. The presence of these attachments can interfere with the accuracy of the test results. However, due to the characteristics of lightweight agricultural products, traditional external removal methods such as stirring, shaking, or wiping are often difficult to remove these attachments quickly and effectively, and may even damage the agricultural product sample due to improper operation. In addition, the sealing performance of the sampling device is also one of the important factors affecting the test results. If the device is not sealed well during the sampling process, it will not only lead to the evaporation and contamination of the buffer solution, but may also introduce external impurities, thereby affecting the accuracy of the test results. Therefore, this invention proposes a sampling device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A sampling device includes a housing, the interior of which is provided with a tray mechanism for holding crops to be tested, and the top of the tray mechanism is provided with a sealing mechanism for sealing.

[0007] The tray mechanism includes a fixed frame and a screen. The fixed frame is located at the top of the box, and the screen is located inside the box. Multiple telescopic mechanisms are provided between the bottom of the fixed frame and the top of the screen. Through-hole limiting grooves are provided on both sides of the top of the fixed frame, and handle holes for easy picking up of the tray mechanism are provided on both sides of the fixed frame.

[0008] In one possible design, the telescopic mechanism includes an outer sleeve, the bottom of which is fixedly connected to the top of a screen, an inner sleeve slidably connected to the inner circumferential wall of the outer sleeve, the top of which is fixedly connected to the bottom of a fixing frame, and a tension spring fixedly connected between the bottom of the inner sleeve and the top of the screen, the tension spring being located inside the outer sleeve.

[0009] In one possible design, the sealing mechanism includes a sealing cover, an outer sleeve II fixedly connected to the top center of the sealing cover, the outer sleeve II fixedly penetrating the sealing cover, an inner sleeve II slidably connected to the inner circumferential wall of the outer sleeve II, a cover handle fixedly connected to the top of the outer sleeve II, a through hole formed on the outer circumferential wall of the outer sleeve II, a sliding groove formed on the inner circumferential wall of the outer sleeve II, the through hole communicating with the sliding groove, a tension spring II fixedly connected between the bottom of the cover handle and the top of the inner sleeve II, a screen II fixedly connected to the bottom of the inner sleeve II, and a drive mechanism for starting the device provided at the bottom of the sealing cover.

[0010] In one possible design, the drive mechanism includes a mounting box and a rack. The mounting box is fixedly connected to the bottom of the sealing cover, and the rack is fixedly connected to the outer circumferential wall of the inner sleeve. The rack is slidably connected in a groove opened in the inner circumferential wall of the outer sleeve. A motor is provided on the bottom inner wall of the mounting box. The output shaft of the motor rotates through one side inner wall of the mounting box. A half-tooth gear is fixedly connected to the outer circumferential wall of the motor output shaft. The half-tooth gear meshes with the rack through a through hole opened in the outer circumferential wall of the outer sleeve.

[0011] In one possible design, the bottom two sides of the sealing cover are provided with mounting groove 1, and the top two sides of the sealing cover are provided with through mounting groove 2. The mounting groove 2 is connected to the corresponding mounting groove 1. The inner wall of one side of the mounting groove 1 is provided with mounting groove 3. A stop rod is slidably connected inside the mounting groove 2. A connecting block is fixedly connected to one side of the stop rod. The connecting block is slidably connected inside the corresponding mounting groove 1. A locking block is slidably connected inside the mounting groove 3. The same spring is fixedly connected between one side of the locking block and one side of the inner wall of the mounting groove 3. The top of the locking block is provided with through groove 2. The bottom of the stop rod and one side of through groove 2 are both provided with inclined surfaces, and the two inclined surfaces are adapted to each other.

[0012] In one possible design, the top two sides of the box are fixedly connected with latches, which pass through the corresponding limiting grooves and engage with the locking blocks.

[0013] In this application, when it is necessary to sample crops for pesticide residue testing, firstly, the abutment is pressed down. Then, the abutment pushes the locking block to the right through the inclined plane and compresses the spring until the two inclined planes no longer contact each other. At this time, the locking block fixes the abutment through friction under the elastic force of the spring, and at the same time, the locking block disengages from the latch. Then, the sealing mechanism is opened, and an appropriate amount of buffer solution is poured into the box. Then, an appropriate amount of the crop to be tested is placed in the sieve. Then, the sealing mechanism is closed and pressed down. At this time, the top of the latch contacts the bottom of the mounting groove three and pushes the mounting groove three upward during the pressing process. At the same time, the mounting groove three drives the abutment to move upward. Then, the abutment disengages from the locking block and the two inclined planes contact each other again. Then, the spring pushes the locking block and the latch... The locking mechanism completes the seal, and the locking block resets the push rod via the inclined plane. Then, the motor is started, and the motor's output shaft drives the half-tooth gear to rotate. The half-tooth gear meshes with the rack, which moves downward and then moves the screen downward through the inner sleeve. The screen then moves the crop and the first screen together downward in the buffer solution, energizing the first and second tension springs. When the half-tooth gear disengages from the rack, the first and second tension springs quickly pull the screens upward, moving the crop rapidly upward in the buffer solution. This process is repeated to remove any adhering substances from the crop surface. After a period of time, the sealing mechanism is opened and the tray mechanism is removed to complete the sampling. After cleaning the device, the next sampling can begin.

[0014] In this utility model, the sampling device, through the setting of the sealing mechanism, uses a sieve to ensure that the light agricultural products to be tested can be stably immersed in the buffer solution during the sampling process, effectively avoiding the problem that the agricultural products float on the liquid surface due to their light weight, thereby ensuring full contact between the agricultural products and the reagents and improving the extraction efficiency of pesticide residues.

[0015] In this utility model, the sampling device uses a built-in motor to drive a half-tooth gear and a rack to achieve rapid up-and-down movement of sieve two and sieve one in the buffer solution. This dynamic process can efficiently remove impurities such as dust and pesticide residue particles attached to the surface of crops, and significantly improve the accuracy of the test results.

[0016] In this utility model, the sampling device has a sealing mechanism designed with a locking buckle and a locking block to ensure the sealing of the sampling device during the sampling process, effectively preventing the evaporation and contamination of the buffer solution, while avoiding the entry of external impurities, thus providing a strong guarantee for the accuracy of the test results.

[0017] In this utility model, the sampling device has tight connections between its components and is easy to operate. Users can complete the sampling process with simple operations. At the same time, the device is easy to disassemble and clean, which facilitates subsequent maintenance and use, and improves work efficiency and user experience.

[0018] This invention ensures that the lightweight agricultural products to be tested are stably immersed in the buffer solution during sampling, effectively avoiding the problem of the products floating on the surface due to their light weight. This guarantees full contact between the products and the reagents, improving the extraction efficiency of pesticide residues. It also enables rapid up-and-down movement of sieve one and sieve two within the buffer solution. This dynamic process efficiently removes dust, pesticide residue particles, and other impurities adhering to the surface of the products, significantly improving the accuracy of the test results. Furthermore, it ensures the sealing of the sampling device during sampling, effectively preventing the evaporation and contamination of the buffer solution and avoiding the entry of external impurities, thus providing a strong guarantee for the accuracy of the test results. Finally, it is easy to disassemble and clean, facilitating subsequent maintenance and use, and improving work efficiency and user experience. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a sampling device proposed in this utility model;

[0020] Figure 2 This is a cross-sectional view of the internal structure of a sampling device proposed in this utility model;

[0021] Figure 3 This is a schematic diagram of the internal structure of a sampling device proposed in this utility model;

[0022] Figure 4 This is an exploded view of the overall structure of the locking mechanism in a sampling device proposed in this utility model;

[0023] Figure 5 for Figure 2 Enlarged view of point A in the middle.

[0024] In the diagram: 1. Box body; 11. Lock; 2. Tray mechanism; 21. Fixing frame; 22. Telescopic mechanism; 23. Screen 1; 24. Limiting groove; 25. Outer sleeve 1; 26. Inner sleeve 1; 27. Tension spring 1; 28. Handle hole; 3. Sealing mechanism; 31. Sealing cover; 32. Outer sleeve 2; 33. Inner sleeve 2; 34. Tension spring 2; 35. Cover handle; 36. Screen 2; 41. Mounting box; 42. Motor; 43. Half gear; 44. Rack; 51. Mounting groove 1; 52. Mounting groove 2; 53. Mounting groove 3; 54. Connecting block; 55. Support rod; 56. Locking block; 57. Spring; 58. Through groove 2. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0026] Example 1

[0027] Reference Figures 1-5 A sampling device includes a housing 1, the inside of which is provided a tray mechanism 2 for holding the crops to be tested, and the top of the tray mechanism 2 is provided with a sealing mechanism 3 for sealing.

[0028] The tray mechanism 2 includes a fixed frame 21 and a screen 23. The fixed frame 21 is located at the top of the box 1, and the screen 23 is located inside the box 1. Multiple telescopic mechanisms 22 are provided between the bottom of the fixed frame 21 and the top of the screen 23. Each telescopic mechanism 22 includes an outer sleeve 25, the bottom of which is fixedly connected to the top of the screen 23. An inner sleeve 26 is slidably connected to the inner circumference of the outer sleeve 25, and the top of the inner sleeve 26 is fixedly connected to the bottom of the fixed frame 21. A tension spring 27 is fixedly connected between the bottom of the inner sleeve 26 and the top of the screen 23, and the tension spring 27 is located inside the outer sleeve 25. Through-hole limiting grooves 24 are provided on both sides of the top of the fixed frame 21, and handle holes 28 are provided on both sides of the fixed frame 21 for easy lifting of the tray mechanism 2.

[0029] The sealing mechanism 3 includes a sealing cover 31. An outer sleeve 32 is fixedly connected to the top center of the sealing cover 31. The outer sleeve 32 is fixedly connected through the sealing cover 31. An inner sleeve 33 is slidably connected to the inner circumference of the outer sleeve 32. A cover handle 35 is fixedly connected to the top of the outer sleeve 32. A through hole is opened on the outer circumference of the outer sleeve 32. A sliding groove is opened on the inner circumference of the outer sleeve 32. The through hole and the sliding groove are connected. The same tension spring 34 is fixedly connected between the bottom of the cover handle 35 and the top of the inner sleeve 33. A screen 36 is fixedly connected to the bottom of the inner sleeve 33.

[0030] The drive mechanism includes a mounting box 41 and a rack 44. The mounting box 41 is fixedly connected to the bottom of the sealing cover 31. The rack 44 is fixedly connected to the outer circumferential wall of the inner sleeve 33. The rack 44 is slidably connected in a groove opened in the inner circumferential wall of the outer sleeve 32. A motor 42 is provided on the bottom inner wall of the mounting box 41. The output shaft of the motor 42 rotates through one side inner wall of the mounting box 41. A half-tooth gear 43 is fixedly connected to the outer circumferential wall of the output shaft of the motor 42. The half-tooth gear 43 meshes with the rack 44 through a through hole opened in the outer circumferential wall of the outer sleeve 32.

[0031] This application can be used in the field of pesticide residue detection, or in other fields applicable to this application.

[0032] Example 2

[0033] refer to Figures 1-5 An improvement based on Embodiment 1: A sampling device applied to the field of pesticide residue detection. The bottom two sides of the sealing cap 31 are provided with mounting groove 1 51, and the top two sides of the sealing cap 31 are provided with through mounting groove 2 52. Mounting groove 2 52 is connected to the corresponding mounting groove 1 51. One inner wall of mounting groove 1 51 is provided with mounting groove 3 53. A stop rod 55 is slidably connected inside mounting groove 2 52. A connecting block 54 is fixedly connected to one side of the stop rod 55. The connecting block 54 is slidably connected inside the corresponding mounting groove 1 51. A locking block 56 is slidably connected inside mounting groove 3 53. One side of the locking block 56 is fixedly connected to the inner wall of one side of mounting groove 3 53 with the same spring 57. The top of the locking block 56 is provided with through groove 2 58. The bottom of the stop rod 55 and one side of through groove 2 58 are both provided with inclined surfaces, which are compatible. Both sides of the top of the box 1 are fixedly connected with latches 11, which pass through the corresponding limiting grooves 24 and engage with the locking block 56.

[0034] However, as is well known to those skilled in the art, the working principle and wiring method of motor 42 are commonplace and are all conventional methods or common knowledge, so they will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0035] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A sampling device comprising a box (1), characterized in that, The inside of the box (1) is provided with a tray mechanism (2) for containing crops to be detected, and the top of the tray mechanism (2) is provided with a sealing mechanism (3) for sealing. The tray mechanism (2) includes a fixed frame (21) and a screen (23), the fixed frame (21) is located at the top of the box (1), the screen (23) is located in the inside of the box (1), a plurality of telescopic mechanisms (22) are arranged between the bottom of the fixed frame (21) and the top of the screen (23), the top of the fixed frame (21) is provided with a through limiting groove (24) on both sides, the both sides of the fixed frame (21) are provided with handle holes (28) for conveniently picking up the tray mechanism (2), the telescopic mechanism (22) includes an outer sleeve (25), the bottom of the outer sleeve (25) is fixedly connected to the top of the screen (23), the inner sleeve (26) is slidably connected to the circumferential inner wall of the outer sleeve (25), the top of the inner sleeve (26) is fixedly connected to the bottom of the fixed frame (21), the same tension spring (27) is fixedly connected between the bottom of the inner sleeve (26) and the top of the screen (23), the tension spring (27) is located in the outer sleeve (25), the sealing mechanism (3) includes a sealing cover (31), the top center of the sealing cover (31) is fixedly connected with an outer sleeve (32), the outer sleeve (32) is fixedly penetrated through the sealing cover (31), the inner sleeve (33) is slidably connected to the circumferential inner wall of the outer sleeve (32), the outer sleeve (32) is fixedly connected with a cover handle (35), the through hole is formed in the circumferential outer wall of the outer sleeve (32), the sliding groove is formed in the circumferential inner wall of the outer sleeve (32), the through hole and the sliding groove are connected, the same tension spring (34) is fixedly connected between the bottom of the cover handle (35) and the top of the inner sleeve (33), the inner sleeve (33) is fixedly connected with a screen (36), and the bottom of the sealing cover (31) is provided with a driving mechanism for starting device.

2. A sampling device according to claim 1, wherein, The driving mechanism includes a mounting box (41) and a rack (44), the mounting box (41) is fixedly connected to the bottom of the sealing cover (31), the rack (44) is fixedly connected to the circumferential outer wall of the inner sleeve (33), the rack (44) is slidably connected in the sliding groove formed in the circumferential inner wall of the outer sleeve (32), the bottom inner wall of the mounting box (41) is provided with a motor (42), the output shaft of the motor (42) is rotatably penetrated through one side inner wall of the mounting box (41), the circumferential outer wall of the output shaft of the motor (42) is fixedly connected with a half-tooth gear (43), and the half-tooth gear (43) is engaged with the rack (44) through the through hole formed in the circumferential outer wall of the outer sleeve (32).

3. A sampling device according to claim 2, wherein, The bottom of the sealing cover (31) is provided with installation groove one (51) on both sides, the top of the sealing cover (31) is provided with through installation groove two (52) on both sides, the installation groove two (52) is communicated with the corresponding installation groove one (51), one side inner wall of the installation groove one (51) is provided with installation groove three (53), the inside of the installation groove two (52) is slidably connected with the abutting rod (55), one side of the abutting rod (55) is fixedly connected with the connecting block (54), the connecting block (54) is slidably connected in the corresponding installation groove one (51), the installation groove three (53) is slidably connected with the clamping block (56), one side between the clamping block (56) and the inner wall of the installation groove three (53) is fixedly connected with the same spring (57), the top of the clamping block (56) is provided with through through slot two (58), the bottom of the abutting rod (55) and one side of the through slot two (58) are provided with inclined surfaces, and the two inclined surfaces are matched.

4. The sampling device of claim 1, wherein, The top of the box (1) is fixedly connected with the lock catch (11) on both sides, the lock catch (11) penetrates through the corresponding limiting groove (24) and is clamped with the clamping block (56).

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