Tea pesticide residue detection device

Abstract

The utility model discloses a tea pesticide residue detection device, which belongs to the technical field of pesticide residue detection, and comprises a base, the top of the base is fixedly connected with an extraction cylinder through a support, the top of the extraction cylinder is detachably connected with a cover body, the top of the base is fixedly connected with a placing table, test paper is placed on the top of the placing table, and a stirring mechanism is arranged in the extraction cylinder. The stirring mechanism comprises a rotating shaft rotationally connected to the bottom of the cover body, a plurality of first stirring plates arranged in the circumferential direction are fixedly connected to the rotating shaft, a plurality of second stirring plates are rotationally connected to the inner wall of the extraction barrel, and the stirring mechanism further comprises a power assembly. The device has the beneficial effects that in the process that a rotating shaft drives a first stirring plate to rotate, a gap between the first stirring plate and a second stirring plate is gradually reduced, tea leaves are extruded through the first stirring plate and the second stirring plate, and through kneading and extruding, medicaments adsorbed on the surfaces and the interiors of the tea leaves are fully dissolved and mixed into a solution, so that the detection precision is improved.

Description

Technical Field

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

[0002] During the tea growing process, pesticides are usually sprayed to control pests, which can result in pesticide residues on the leaves. To improve consumer safety, leaf samples are usually taken for pesticide residue testing. Traditional pesticide residue testing usually involves pouring water into a beaker containing the leaf sample, then adding a certain amount of reaction reagent (eluent, etc.), shaking it well, and then using a pesticide residue rapid test card to determine the pesticide residue status of the tea.

[0003] A search of Chinese Patent Publication No. CN219456121U reveals a tea pesticide residue detection device. This device includes a detection box, a cleaning mesh box, a stirring assembly, and a detector. The detection box has an open top. The cleaning mesh box is located inside the detection box and includes a box body, a door, and a panel. An inlet is located on the front of the box body, and the door is hinged to both sides of the inlet. The panel is fixedly installed on the inner wall of the box body, creating a seven-layered space inside. This allows the spiral blades to be placed layer by layer with the tea leaves. The stirring assembly is located on the cleaning mesh box and includes a motor box, a drive motor, a rotating rod, and spiral blades. The motor box is fixedly installed on the top outer wall of the box body, the drive motor is fixedly installed on the bottom inner side of the motor box, the rotating rod is rotatably mounted on the bottom of the motor box and the top and bottom of the box body, and the spiral blades are fixedly installed on the outer wall of the rotating rod. This allows the detection solution to thoroughly stir and rinse the tea leaves, and also to rotate and dehydrate the tea leaves after testing, removing excess solution from the surface of the tea leaves.

[0004] In the aforementioned patent, the detection solution is thoroughly stirred and rinsed by a rotating rod and spiral blades. However, after rinsing, the tea leaves swell and absorb water, which may cause some of the substances to be detected to be absorbed into the tea leaves, thus affecting the detection results. Utility Model Content

[0005] The purpose of this invention is to provide a device for detecting pesticide residues in tea in order to solve the above-mentioned problems.

[0006] This utility model achieves the above objectives through the following technical solutions:

[0007] A pesticide residue detection device for tea includes a base, an extraction cylinder fixedly connected to the top of the base via a bracket, a cover detachably connected to the top of the extraction cylinder, a placement platform fixedly connected to the top of the base, a test strip placed on the top of the placement platform, a stirring mechanism inside the extraction cylinder, the stirring mechanism including a rotating shaft rotatably connected to the bottom of the cover, multiple circumferentially arranged first stirring plates fixedly connected to the rotating shaft, multiple second stirring plates rotatably connected to the inner wall of the extraction cylinder, the first stirring plates abutting against the second stirring plates during rotation, a torsion spring being provided between the second stirring plates and the inner wall of the extraction cylinder, and the stirring mechanism also includes a power component for driving the rotating shaft to rotate.

[0008] Preferably, both the first stirring plate and the second stirring plate are inclined and parallel.

[0009] Preferably, a number of equally spaced extrusion rollers are rotatably connected to the side of the first and second mixing plates that are close to each other.

[0010] Preferably, multiple sets of first stirring plates are fixedly connected to the rotating shaft and arranged along the axis of the rotating shaft. Adjacent sets of first stirring plates are staggered, and the inner wall of the extraction cylinder is provided with a second stirring plate that cooperates with the first stirring plates.

[0011] Preferably, the power assembly includes a rotary motor fixedly connected to the top of the cover, and the output end of the rotary motor is connected to a rotary shaft via a coupling.

[0012] Preferably, the bottom of the extraction cylinder is fixedly connected to a discharge funnel, the bottom of the discharge funnel is provided with a discharge hole, a solenoid valve is provided in the discharge hole, the inner wall of the discharge funnel is provided with a groove, a filter plate is engaged in the groove, and the top of the cover is provided with a feed hole.

[0013] Preferably, the bottom of the cover is fixedly connected with several circumferentially arranged insert rods, and the top of the extraction cylinder is provided with several insertion holes that cooperate with the insert rods.

[0014] The beneficial effects are as follows: as the rotating shaft drives the first stirring plate to rotate, the gap between the first stirring plate and the second stirring plate gradually decreases. The tea leaves are squeezed by the first and second stirring plates. Through kneading and squeezing, the reagents adsorbed on the surface and inside of the tea leaves are fully dissolved and mixed into the solution, thereby improving the accuracy of detection.

[0015] The additional technical features and advantages of this utility model will become more apparent from the following description, or may be learned through specific practice of this utility model. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 This is a schematic diagram of the overall structure of the tea pesticide residue detection device described in this utility model;

[0018] Figure 2 This is a front view of the tea pesticide residue detection device described in this utility model;

[0019] Figure 3 This is a front view of the internal structure of the extraction cylinder of the tea pesticide residue detection device described in this utility model;

[0020] Figure 4 This is a schematic diagram of the internal structure of the extraction cylinder of the tea pesticide residue detection device described in this utility model;

[0021] Figure 5 This is a schematic diagram of the cover of the tea pesticide residue detection device described in this utility model.

[0022] The reference numerals in the attached drawings are explained as follows: 1. Base; 2. Extraction cylinder; 201. Cover; 2011. Insert rod; 202. Discharge funnel; 203. Feed hole; 204. Filter plate; 301. Placement platform; 302. Test paper; 401. Rotary motor; 402. Rotating shaft; 403. First stirring plate; 404. Second stirring plate; 405. Squeeze roller. Detailed Implementation

[0023] 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.

[0024] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] The present invention will be further described below with reference to the accompanying drawings:

[0026] like Figures 1-5As shown, a pesticide residue detection device for tea includes a base 1. An extraction cylinder 2 is fixedly connected to the top of the base 1 via a bracket. A cover 201 is detachably connected to the top of the extraction cylinder 2. Several circumferentially arranged insertion rods 2011 are fixedly connected to the bottom of the cover 201. Several insertion holes that cooperate with the insertion rods 2011 are opened on the top of the extraction cylinder 2.

[0027] The bottom of the extraction cylinder 2 is fixedly connected to a discharge funnel 202. The bottom of the discharge funnel 202 is provided with a discharge hole. A solenoid valve is installed in the discharge hole. The inner wall of the discharge funnel 202 is provided with a slot. A filter plate 204 is engaged in the slot. The top of the cover 201 is provided with a feed hole 203.

[0028] A placement platform 301 is fixedly connected to the top of the base 1. A test strip 302 is placed on the top of the placement platform 301. The solenoid valve is opened, and the solution in the extraction tube 2 is dripped onto the test strip 302. After standing for a certain period of time, the results are observed.

[0029] The extraction cylinder 2 is equipped with a stirring mechanism, which includes a rotating shaft 402 rotatably connected to the bottom of the cover 201. Multiple circumferentially arranged first stirring plates 403 are fixedly connected to the rotating shaft 402. Multiple second stirring plates 404 are rotatably connected to the inner wall of the extraction cylinder 2. During the rotation of the first stirring plates 403, they abut against the second stirring plates 404. A torsion spring is provided between the second stirring plates 404 and the inner wall of the extraction cylinder 2. Both the first stirring plates 403 and the second stirring plates 404 are inclined and parallel. A number of equally spaced extrusion rollers 405 are rotatably connected to the side of the first stirring plates 403 and the second stirring plates 404 that are close to each other. The tea leaves are kneaded and squeezed by the extrusion rollers 405.

[0030] Multiple sets of first stirring plates 403 are fixedly connected to the rotating shaft 402 and arranged along the axis of the rotating shaft 402. The adjacent sets of first stirring plates 403 are staggered to improve the stirring effect. The inner wall of the extraction cylinder 2 is provided with a second stirring plate 404 that cooperates with the first stirring plates 403.

[0031] The stirring mechanism also includes a power assembly for driving the rotating shaft 402 to rotate. The power assembly includes a rotary motor 401 bolted to the top of the cover 201. The output end of the rotary motor 401 is connected to the rotating shaft 402 via a coupling. When the rotary motor 401 is started, the rotary motor 401 drives the rotating shaft 402 to rotate.

[0032] Working principle: During use, add an appropriate amount of tea leaves, water, and eluent to the extraction cylinder 2 through the feed hole 203. Start the rotary motor 401, which drives the rotary shaft 402 to rotate the first stirring plate 403. During the rotation of the first stirring plate 403 by the rotary shaft 402, the gap between the first stirring plate 403 and the second stirring plate 404 gradually decreases. The tea leaves are squeezed by the first stirring plate 403 and the second stirring plate 404. Through kneading and squeezing, the adsorbed reagents on the surface and inside of the tea leaves are fully dissolved and mixed into the solution, improving the accuracy of the detection. Then, open the solenoid valve in the discharge funnel 202 and drip the solution in the extraction cylinder 2 onto the test paper 302. After standing for a certain period of time, observe the results. After the test, discharge the remaining solution in the extraction cylinder 2 through the discharge funnel 202. Then, lift the cover 201 upwards to remove the cover 201 and clean the tea leaves filtered on the filter plate 204 from the extraction cylinder 2. Replace the cover 201.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A pesticide residue detection device for tea leaves, comprising a base (1), wherein an extraction cylinder (2) is fixedly connected to the top of the base (1) via a bracket, a cover (201) is detachably connected to the top of the extraction cylinder (2), a placement platform (301) is fixedly connected to the top of the base (1), and a test strip (302) is placed on the top of the placement platform (301), characterized in that: The extraction cylinder (2) is provided with a stirring mechanism, the stirring mechanism comprises a rotating shaft (402) which is rotationally connected at the bottom of the cover body (201), a plurality of first stirring plates (403) are fixedly connected on the rotating shaft (402) and arranged in the circumferential direction, a plurality of second stirring plates (404) are rotationally connected on the inner wall of the extraction cylinder (2), the first stirring plates (403) abut against the second stirring plates (404) during rotation, torsion springs are arranged between the second stirring plates (404) and the inner wall of the extraction cylinder (2), and the stirring mechanism further comprises a power assembly, and the power assembly is used for driving the rotating shaft (402) to rotate.

2. The tea agricultural residue detection device according to claim 1, characterized in that: The first stirring plates (403) and the second stirring plates (404) are both arranged in an inclined manner, and the first stirring plates (403) and the second stirring plates (404) are parallel. 3.The tea pesticide residue detection device according to claim 1, characterized in that: The side, where the first stirring plates (403) and the second stirring plates (404) are close to each other, is rotationally connected with a plurality of extrusion rollers (405) which are arranged at equal intervals.

4. The tea agricultural residue detection device according to claim 1, characterized in that: A plurality of groups of the first stirring plates (403) are fixedly connected on the rotating shaft (402) and arranged along the axis direction of the rotating shaft (402), adjacent two groups of the first stirring plates (403) are arranged in a staggered manner, and the inner wall of the extraction cylinder (2) is provided with the second stirring plates (404) which cooperate with the first stirring plates (403).

5. The tea pesticide residue detection device according to claim 1, characterized in that: The power assembly comprises a rotating motor (401) which is fixedly connected at the top of the cover body (201), and the output end of the rotating motor (401) is connected with the rotating shaft (402) through a shaft coupling.

6. The tea pesticide residue detection device according to claim 1, characterized in that: The bottom of the extraction cylinder (2) is fixedly connected with a discharge funnel (202), a discharge hole is formed at the bottom of the discharge funnel (202), an electromagnetic valve is arranged in the discharge hole, a clamping groove is formed in the inner wall of the discharge funnel (202), a filter plate (204) is clamped in the clamping groove, and a feeding hole (203) is formed at the top of the cover body (201).

7. The tea pesticide residue detection device according to claim 1, characterized in that: The bottom of the cover body (201) is fixedly connected with a plurality of insertion rods (2011) which are arranged in the circumferential direction, and a plurality of insertion holes which cooperate with the insertion rods (2011) are formed at the top of the extraction cylinder (2).

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