Tea pesticide residue detection and extraction device

Abstract

The utility model discloses a tea pesticide residue detecting and extracting device, which relates to the field of pesticide residue detection and comprises an extractor, a sealing cover and a crushing mechanism, a plurality of groups of mounting seats are mounted on the outer wall of the sealing cover, a fixing plate is rotatably mounted on the mounting seats, and a convex frame corresponding to the fixing plate is mounted on the outer wall of the extractor and used for guiding and limiting the fixing plate. Through the positioning and guiding functions of the positioning block and the matching of the fixing plate and the butt joint groove, the extractor and the sealing cover can be firmly connected, the situation that the extractor and the sealing cover are separated in the tea sample crushing treatment process is effectively avoided, the operation stability of the device is ensured, and the accuracy of a detection result is improved; due to the design of the unlocking device, the separation operation of the sealing cover and the extractor is simple and convenient; when the sample treatment device is used, connection can be quickly released through linkage of the unlocking block, the transmission block and the fixing plate only by pressing the pressing ring, so that the treated sample can be conveniently taken out, the device can be conveniently cleaned and subsequently operated, and the working efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of pesticide residue detection, specifically a pesticide residue detection and extraction device for tea. Background Technology

[0002] Tea, a widely consumed beverage globally, is beloved by many. As people's living standards improve, their attention to the quality and safety of tea is increasing. Pesticide residues are one of the key factors affecting the quality and safety of tea. During tea cultivation, pesticides are often used to control pests and diseases. Improper use or excessive pesticide residues can pose a potential threat to human health. Therefore, accurately detecting pesticide residues in tea is crucial, and this relies heavily on efficient and precise pesticide residue detection and extraction devices.

[0003] For example, a rapid extraction device for pesticide residue detection in tea, as disclosed in Chinese Patent Publication No. CN210465062U, includes a dissolving chamber and a crushing component detachably connected to the dissolving chamber. The dissolving chamber includes a dissolving cavity disposed inside it, a first inlet, a second inlet, and at least one outlet connecting the dissolving cavity to the outside. A sealing plate is provided at the outlet of the dissolving chamber. The crushing component includes a stirring column, a blade disposed on the stirring column, a rotating handle connected to the stirring column, and a fixing block rotatably connected to at least the stirring column. The stirring column extends into the dissolving cavity through the second inlet and is detachably connected to the second inlet through the fixing block. This device of the present invention can crush tea leaves and prepare a solution in one step, realizing rapid extraction of tea pesticide residue samples, and is particularly suitable for large-scale and on-site sampling.

[0004] However, the aforementioned rapid extraction device for detecting pesticide residues in tea mainly connects the crushing component to the dissolving tank through the cooperation of a locking block and a chute. It also has multiple openings to ensure the locking block can slide smoothly into the chute. However, in actual use, because the user needs to rotate the handheld part to drive the stirring column, the locking block is easily rotated within the chute, causing the connection between the crushing component and the dissolving tank to loosen during the crushing operation. Furthermore, when pulling out and installing the crushing component, the position of the locking block needs to be adjusted, requiring multiple adjustments to the position of the locking block and the openings. This makes the connection between the crushing component and the dissolving tank inconvenient. Therefore, improvements are urgently needed based on the existing rapid extraction device for detecting pesticide residues in tea. Utility Model Content

[0005] Therefore, the purpose of this utility model is to provide a tea pesticide residue detection and extraction device to solve the technical problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a tea pesticide residue detection and extraction device, comprising an extractor, a cap and a crushing mechanism, wherein multiple sets of mounting seats are installed on the outer wall of the cap, and a fixed plate is rotatably mounted on the mounting seats; the outer wall of the extractor is provided with a convex frame corresponding to the fixed plate for guiding and restricting the fixed plate, and the end of the convex frame is provided with a mating groove that cooperates with the fixed plate.

[0007] The mounting base is provided with an elastic element corresponding to the fixing plate, and the fixing plate has an L-shaped cross-section. After the extractor and the cap are connected, the end of the fixing plate will enter the docking groove to fix the connection between the extractor and the cap.

[0008] A positioning block is installed on the end face of the cap, and a positioning groove corresponding to the positioning block is opened at the end of the cap.

[0009] A transmission block is installed on the outer wall of the fixed plate, and an unlocking device for pushing the transmission block is installed on the cover to push the end of the fixed plate out of the docking groove.

[0010] By adopting the above technical solution, the positioning and guiding function of the positioning block, as well as the cooperation between the fixing plate and the docking groove, ensures that the extractor and the cap can be firmly connected, effectively preventing separation during the tea sample crushing process, ensuring the stability of the device operation, and improving the accuracy of the test results. The design of the unlocking device makes the separation operation of the cap and the extractor simple and convenient. By simply pressing the pressure ring, the connection can be quickly released through the linkage of the unlocking block, the transmission block, and the fixing plate, which facilitates the removal of the processed sample and the cleaning and subsequent operation of the device, thus improving work efficiency.

[0011] Furthermore, multiple sets of positioning blocks are installed at equal angles on the outer wall of the cap, and the corners of the positioning blocks near the extractor are all designed with beveled angles.

[0012] By adopting the above technical solution, installing multiple sets of positioning blocks at equal angles helps to position the cap more accurately when connecting it to the extractor, ensuring the accuracy of the cap installation angle.

[0013] Furthermore, the positioning block is positioned to correspond to the mounting base position, and the outer wall of the positioning block does not adhere to the outer wall of the mounting base. When the cover is not connected to the extractor, the outer wall of the positioning block adheres to the outer wall of the fixing plate, which is used to limit the angle of the fixing plate.

[0014] By adopting the above technical solution, the positioning block corresponds to the mounting base and restricts the angle of the fixing plate when the cap is not connected, ensuring the positional stability of the fixing plate in the initial state. This provides the prerequisite for the accurate installation of the cap and the extractor, avoids the fixing plate from rotating arbitrarily and affecting the installation effect, and improves the convenience and accuracy of the device.

[0015] Furthermore, the bottom corners of the fixing plate and the top corners of the convex frame are both designed with bevels, and the width of the mating groove at the end of the convex frame is greater than the width of the fixing plate.

[0016] By adopting the above technical solution, the beveled design allows the fixing plate to slide more smoothly when it approaches the convex frame, reducing jamming; the wider docking groove design facilitates the entry of the fixing plate end, which is conducive to quickly connecting the extractor and the cap, while ensuring the tightness of the connection, improving the ease of use of the device and the stability of the connection.

[0017] Furthermore, the unlocker includes an unlocking block that is slidably installed inside the cover and passes through the mounting base, and the end of the unlocking block contacts the transmission block, and the surface of the unlocking block that contacts the transmission block is designed with an angle.

[0018] By adopting the above technical solution, it is ensured that when it is necessary to separate the extractor and the cap, the transmission block can be pushed through a simple operation to disconnect the two, which facilitates the cleaning of the device and sample processing, and improves the ease of operation of the device.

[0019] Furthermore, the outer wall of the convex frame is provided with a sliding groove corresponding to the unlocking block and the transmission block, and the sliding groove is connected to the positioning groove to ensure that the transmission block can slide smoothly, and the end face of the transmission block away from the unlocking block is designed with an arc surface.

[0020] By adopting the above technical solution, the slide provides a stable sliding track for the transmission block, ensuring the stability of the transmission block during the sliding process and enabling it to accurately drive the fixed plate to rotate; the arc surface design of the transmission block further reduces the resistance during sliding, improves the smoothness of the unlocking operation, and enhances the reliability and service life of the unlocker.

[0021] Furthermore, the unlocker also includes a pressure rod that is slidably installed inside the cover and connected to the unlocking block, and the pressure rod has a cross-section in the shape of a cross, and a spring that is attached to the inner wall of the mounting base is installed in the middle of the pressure rod.

[0022] By adopting the above technical solution, the cross-shaped design of the pressure rod enhances its structural stability and makes it easier for users to apply force to push the unlocking block; the spring not only plays a buffering role, but also allows the unlocker to automatically reset after the unlocking operation is completed.

[0023] Furthermore, multiple sets of the unlocking block, pressure rod, and spring are installed at equal angles inside the cover, and pressure rings are installed at the top of the multiple sets of pressure rods, with the multiple sets of pressure rods connected to each other through the pressure rings.

[0024] By adopting the above technical solution, users can operate multiple unlocking blocks simultaneously, further improving the convenience and efficiency of the unlocking operation.

[0025] In summary, the present invention has the following main advantages:

[0026] This invention utilizes the positioning and guiding function of the positioning block, along with the cooperation between the fixing plate and the docking groove, to ensure a secure connection between the extractor and the cap. This effectively prevents separation during the tea sample crushing process, ensuring the stability of the device operation and improving the accuracy of the test results. The unlocking device design makes the separation of the cap and extractor simple and convenient. By simply pressing the pressure ring, the connection can be quickly released through the linkage of the unlocking block, the transmission block, and the fixing plate, facilitating the removal of the processed sample and the cleaning and subsequent operation of the device, thus improving work efficiency. Attached Figure Description

[0027] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0028] Figure 2 This is a three-dimensional structural diagram of the extractor and cap of this utility model after separation;

[0029] Figure 3 This is a three-dimensional structural diagram of the present invention after partial cross-section;

[0030] Figure 4 This is a partial cross-sectional three-dimensional structural diagram of the extractor and the cap of this utility model after connection;

[0031] Figure 5 This is a partial three-dimensional structural diagram of the extractor and cap separation process of this utility model;

[0032] Figure 6 This is a three-dimensional structural diagram of the unlocking device of this utility model.

[0033] In the diagram: 1. Extractor; 2. Cover; 3. Crushing mechanism; 4. Mounting base; 41. Positioning block; 42. Positioning groove; 43. Slide groove; 5. Fixing plate; 6. Protruding frame; 61. Connecting groove; 7. Transmission block; 8. Unlocking block; 81. Pressure rod; 82. Spring; 83. Pressure ring. Detailed Implementation

[0034] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0035] This utility model relates to a tea pesticide residue detection and extraction device, which aims to provide a tea pesticide residue detection sample extraction device with simple structure, convenient operation and stable connection, which can effectively improve the efficiency and convenience of tea pesticide residue detection sample extraction.

[0036] The embodiments of this utility model will be described below based on its overall structure.

[0037] A device for detecting and extracting pesticide residues in tea, such as Figure 1 - Figure 6 As shown, it mainly consists of an extractor 1, a cap 2, a crushing mechanism 3, a mounting base 4, a fixing plate 5, a convex frame 6, a transmission block 7, and an unlocker. The crushing mechanism 3 is set on the cap 2 and is used to crush the tea sample placed in the extractor 1, crushing the tea into a state suitable for subsequent detection and extraction, so as to extract pesticide residue components from the tea sample for detection.

[0038] The cap 2 is used to seal the extractor 1. Its outer wall is provided with multiple sets of positioning blocks 41. These positioning blocks 41 are distributed at equal angles, and the end corners near the extractor 1 are designed at bevels. The function of the positioning blocks 41 is to position and guide the cap 2 when it is connected to the extractor 1, so that the cap 2 can be accurately installed on the extractor 1. At the same time, when the cap 2 is not connected to the extractor 1, the outer wall of the positioning block 41 is in contact with the outer wall of the fixing plate 5, which can limit the angle of the fixing plate 5.

[0039] In this utility model, the mounting base 4 is disposed on the cover 2 and corresponds to the fixing plate 5; the mounting base 4 is provided with an elastic element, which provides elastic force to the fixing plate 5; when the cover 2 is connected to the extractor 1, the fixing plate 5 is compressed, causing the elastic element to store elastic potential energy; when connected in place, when the end of the fixing plate 5 corresponds to the docking groove 61, the elastic element releases energy, pushing the end of the fixing plate 5 into the docking groove 61, thereby realizing the connection between the extractor 1 and the cover 2.

[0040] In some examples, the elastic element can be a torsion spring.

[0041] Of course, in other examples, the elastic element can also be a clockwork spring.

[0042] The fixing plate 5 in this utility model has an L-shaped cross-section. One end of it is connected to the mounting base 4, and the other end enters the docking groove 61 at the end of the convex frame 6 when the cover 2 and the extractor 1 are connected in place. The L-shaped design allows the end of the fixing plate 5 to be tightly attached to the inner wall of the docking groove 61 after entering the docking groove 61, preventing the fixing plate 5 from sliding along the end of the extractor 1, thereby ensuring the stability of the connection between the extractor 1 and the cover 2.

[0043] For example, the convex frame 6 is set on the outer wall of the extractor 1, and its top corners are designed with bevels to facilitate the sliding of the fixing plate 5 to the convex frame 6; the end of the convex frame 6 is provided with a docking groove 61, the width of the docking groove 61 is greater than the width of the fixing plate 5, so that the fixing plate 5 can enter and be fixed to fix the fixing plate 5, thereby realizing the connection between the extractor 1 and the cover 2.

[0044] In this utility model, the transmission block 7 is slidably installed inside the cover 2. Its end face away from the unlocking block 8 is designed with an arc surface, which facilitates sliding in the groove 43. The transmission block 7 is connected to the fixing plate 5. When the unlocking block 8 slides and presses the transmission block 7, the transmission block 7 drives the fixing plate 5 to rotate, so that the end of the fixing plate 5 rotates out of the docking groove 61, and the connection between the extractor 1 and the cover 2 is released.

[0045] This utility model also discloses an unlocking device;

[0046] It includes an unlocking block 8 that is slidably installed inside the cover 2 and passes through the mounting base 4, a pressure rod 81 connected to the unlocking block 8, a spring 82 installed in the middle of the pressure rod 81 and in contact with the inner wall of the mounting base 4, and a pressure ring 83 installed at the top of multiple sets of pressure rods 81;

[0047] The unlocking block 8 has its end in contact with the transmission block 7, and the contact surface is designed with an incline. By pressing the pressure ring 83, the pressure rod 81 pushes the unlocking block 8 to slide, and the unlocking block 8 squeezes the transmission block 7, thereby unlocking and separating the extractor 1 and the cover 2. The spring 82 is compressed when the pressure rod 81 pushes the unlocking block 8 to slide. After the pressure ring 83 is released, the spring 82 uses its elastic force to reset the pressure ring 83, so that the unlocker returns to its initial state.

[0048] The working principle of this utility model is as follows: When using the device, the cover 2 is aligned with the extractor 1. When the cover 2 is not connected to the extractor 1, the outer wall of the positioning block 41 is in contact with the outer wall of the fixing plate 5, which restricts the angle of the fixing plate 5. As the cover 2 gradually approaches the extractor 1, the fixing plate 5 will move closer to the convex frame 6. The bottom corners of the fixing plate 5 and the top corners of the convex frame 6 are both designed with bevels, which allows the fixing plate 5 to slide more smoothly toward the convex frame 6. As the fixing plate 5 contacts the convex frame 6, the fixing plate 5 will rotate outward, thereby causing the elastic element to be subjected to pressure and begin to store energy.

[0049] As the distance between the cap 2 and the extractor 1 gradually decreases, the end face of the positioning block 41 will come into contact with the outer wall of the extractor 1. At this time, the user can adjust its position by rotating the positioning block 41. Before connecting the cap 2 and the extractor 1, the user can preliminarily determine the installation position by the position of the fixing plate 5 and the convex frame 6. At this time, it is only necessary to rotate the cap 2 slightly to make the positioning block 41 enter the positioning groove 42 so that the angle of the cap 2 will be fixed, ensuring the fixity of the angle of the cap 2 after installation, and thus ensuring the fixity of the connection angle between the cap 2 and the extractor 1 during the subsequent crushing process.

[0050] Once the extractor 1 and the cap 2 are in place, the positioning block 41 fully enters the positioning groove 42, and the end of the fixing plate 5 aligns with the docking groove 61. At this point, the restriction imposed on the end of the fixing plate 5 by the convex frame 6 is released, and the elastic element provides rotational power to the fixing plate 5, causing the end of the fixing plate 5 to enter the docking groove 61 at the end of the convex frame 6. Because the fixed plate 5 has an L-shaped cross-section, after its protruding end enters the docking groove 61, the protruding position of the end of the fixing plate 5 will be in contact with the inner wall of the docking groove 61, preventing the end of the fixing plate 5 from continuing to slide. This achieves a firm connection between the extractor 1 and the cap 2, ensuring that they will not easily separate during subsequent operations.

[0051] After the cap 2 is installed, the crushing mechanism 3 starts to work, crushing the tea sample placed in the extractor 1. After crushing, the internal mixed solution can be extracted (this is existing technology and will not be described in detail here).

[0052] When the tea sample is processed and it is necessary to separate the cap 2 from the extractor 1, pressing the pressure ring 83 will push multiple unlocking blocks 8 simultaneously through the pressure rod 81, causing the unlocking blocks 8 to slide synchronously. This causes the transmission block 7 to be squeezed by the unlocking blocks 8, forcing the transmission block 7 to rotate out of the slide groove 43. At this time, the transmission block 7 will drive the fixing plate 5 to rotate, causing the end of the fixing plate 5 to rotate out of the docking groove 61, thus releasing the connection between the extractor 1 and the cap 2, making it convenient to take out the processed sample and clean the device and perform subsequent operations.

[0053] During the process of the lever 81 pushing the unlocking block 8 to slide, the spring 82 will be in a compressed state, so that when the user releases the pressure ring 83, the spring 82 will reset the pressure ring 83, making it easy to press it again later.

[0054] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A tea pesticide residue detection and extraction device, characterized in that, It includes an extractor (1), a cover (2) and a crushing mechanism (3). The outer wall of the cover (2) is equipped with multiple sets of mounting seats (4), and a fixing plate (5) is rotatably mounted on the mounting seat (4). The outer wall of the extractor (1) is equipped with a protruding frame (6) corresponding to the fixing plate (5) for guiding and restricting the fixing plate (5), and the end of the protruding frame (6) is provided with a docking groove (61) that cooperates with the fixing plate (5). The mounting base (4) is provided with an elastic element corresponding to the fixing plate (5), and the fixing plate (5) has an L-shaped cross section. After the extractor (1) and the cover (2) are connected, the end of the fixing plate (5) will enter the docking groove (61) to fix the connection between the extractor (1) and the cover (2). A positioning block (41) is installed on the end face of the cover (2), and a positioning groove (42) corresponding to the positioning block (41) is opened at the end of the cover (2). The outer wall of the fixed plate (5) is fitted with a transmission block (7), and the cover (2) is fitted with an unlocker for pushing the transmission block (7) to push the end of the fixed plate (5) out of the docking groove (61).

2. The tea pesticide residue detection and extraction device according to claim 1, characterized in that: Multiple sets of positioning blocks (41) are installed at equal angles on the outer wall of the cover (2), and the corners of the positioning blocks (41) near the extractor (1) are all designed with beveled angles.

3. The tea pesticide residue detection and extraction device according to claim 1, characterized in that: The positioning block (41) is positioned in a position corresponding to the mounting base (4), and the outer wall of the positioning block (41) is not in contact with the outer wall of the mounting base (4). When the cover (2) is not connected to the extractor (1), the outer wall of the positioning block (41) is in contact with the outer wall of the fixing plate (5) to limit the angle of the fixing plate (5).

4. The tea pesticide residue detection and extraction device according to claim 1, characterized in that: The bottom corner of the fixing plate (5) and the top corner of the convex frame (6) are both designed with beveled angles, and the width of the mating groove (61) opened at the end of the convex frame (6) is greater than the width of the fixing plate (5).

5. The tea pesticide residue detection and extraction device according to claim 1, characterized in that: The unlocker includes an unlocking block (8) that is slidably installed inside the cover (2) and passes through the mounting base (4), and the end of the unlocking block (8) is in contact with the transmission block (7), and the surface of the unlocking block (8) that is in contact with the transmission block (7) is designed with an angle.

6. The tea pesticide residue detection and extraction device according to claim 5, characterized in that: The outer wall of the convex frame (6) is provided with a sliding groove (43) corresponding to the unlocking block (8) and the transmission block (7), and the sliding groove (43) is connected to the positioning groove (42) to ensure that the transmission block (7) can slide smoothly, and the end face of the transmission block (7) away from the unlocking block (8) is designed with an arc surface.

7. The tea pesticide residue detection and extraction device according to claim 6, characterized in that: The unlocker also includes a pressure rod (81) that is slidably installed inside the cover (2) and connected to the unlocking block (8), and the pressure rod (81) has a cross-section in the shape of a cross, and a spring (82) that is attached to the inner wall of the mounting base (4) is installed in the middle of the pressure rod (81).

8. The tea pesticide residue detection and extraction device according to claim 7, characterized in that: The unlocking block (8), the pressure rod (81) and the spring (82) are installed in multiple sets at equal angles inside the cover (2). Each set of pressure rods (81) has a pressure ring (83) installed at its top. The multiple sets of pressure rods (81) are connected to each other through the pressure ring (83).

Images