Test tube oscillation device for tea pesticide residue detection

Abstract

The invention relates to a test tube oscillation device for tea pesticide residue detection, which comprises an oscillation table, an oscillation frame, a limiting mechanism and an oscillation mechanism, and is characterized in that the oscillation frame is arranged on the oscillation table in a lifting manner, a rotating rod is rotatably arranged on the oscillation frame, and a turnover plate is connected with the rotating rod through a rotating block and is matched with the turnover plate to be connected with the oscillation frame through an elastic piece; when a test tube is oscillated to mix a sample and a reagent, the turnover plate rotates to abut against the oscillation table, an external manipulator can clamp the test tube and place the test tube in an oscillation cavity of the oscillation frame, the oscillation mechanism drives the oscillation frame to do lifting motion on the oscillation table, and the test tube is oscillated along with lifting of the oscillation frame and under the action of the elastic piece. According to the oscillating frame, the overturning plate can be driven to abut against the test tube in the oscillating cavity, the test tube can be stably fixed to the oscillating frame, the sealing performance of the test tube can be kept when the test tube oscillates on the oscillating frame, a sample and a reagent in the test tube can be fully contacted and mixed, the detection parallelism is improved, and the detection precision is higher.

Description

Technical Field

[0001] The invention relates to the technical field of test tube oscillation equipment, and in particular to a test tube oscillation device for detecting tea pesticide residues. Background Art

[0002] Tea, commonly known as tea, originated in China and generally includes the leaves and buds of the tea tree. It contains catechins, cholestenone, caffeine, inositol, folic acid, pantothenic acid and other ingredients that are beneficial to health. It has many functions such as refreshing the brain, promoting diuresis and reducing swelling, preventing heatstroke and cooling down, protecting the cardiovascular system and improving gastrointestinal function. It can enhance human health. Tea beverages made from tea leaves are one of the three major beverages in the world.

[0003] Tea trees may face attacks from various pests and diseases during the planting process. In order to protect the yield and quality of tea trees and tea leaves, pesticides are usually used for prevention and control. However, the use of pesticides must be strictly controlled to ensure that the pesticide residues in tea are within the permitted range of standards.

[0004] Pesticide residues refer to the general term for pesticide parent bodies, pesticide residue hazardous derivatives, metabolites, degradation products and impurities that remain in the environment, organisms and food after pesticide use. The main reason for the excessive pesticide residues in tea is the use of organophosphorus pesticides and carbamate pesticides in the process of tea tree cultivation, such as methyl parathion, omethoate, phorate, parathion, methyl parathion, etc. Drinking tea containing a large amount of highly toxic and extremely toxic pesticide residues can cause acute poisoning accidents. Long-term drinking of tea with excessive pesticide residues will not cause acute poisoning, but it may cause chronic poisoning in people, leading to the occurrence of diseases, inducing cancer, and even affecting the next generation.

[0005] When testing the pesticide residue components in tea, the collected samples need to be placed in test tubes, and the corresponding reagents need to be added for sample preparation, and then placed in a test tube shaking device for batch shaking so that the samples and reagents in the test tubes can be fully mixed. However, in the automated preparation of pesticide residue samples, when a robot grabs the test tube and transfers it to the test tube shaking device for shaking, the test tube is easily fallen off the shaker during the shaking process, resulting in the inability to effectively shake the test tube, so that the samples and reagents in the test tube cannot be fully mixed, which greatly affects the detection results of tea pesticide residue samples. Summary of the invention

[0006] Based on this, it is necessary to provide a test tube oscillating device for detecting pesticide residues in tea.

[0007] The technical solution of the present invention to solve the above technical problem is as follows: a test tube oscillating device for detecting pesticide residues in tea leaves, comprising:

[0008] Oscillating table;

[0009] An oscillation frame, the oscillation frame is lifted and arranged on the first side of the oscillation platform, and a plurality of oscillation chambers are provided on the oscillation frame;

[0010] A limiting mechanism, the limiting mechanism comprising: a rotating rod, a rotating block, a flip plate and two elastic members, the rotating rod is rotatably arranged on the oscillation frame, the first end of the rotating block is connected to the rotating rod, the second end of the rotating block is connected to the first side of the flip plate, the two elastic members are respectively located at the two ends of the oscillation table, the first end of each elastic member is connected to one end of the oscillation frame, the second end of each elastic member is connected to one end of the flip plate, and the flip plate movably closes each oscillation cavity;

[0011] An oscillation mechanism is arranged on the oscillation table and is drivingly connected to the oscillation frame.

[0012] In one embodiment, the oscillation mechanism includes: a motor, a first rotating rod and an oscillation plate, a accommodating cavity is opened in the oscillation table, a lifting groove is opened on the side wall of the accommodating cavity, the motor is arranged on the second side of the oscillation table, the first rotating rod and the oscillation plate are located in the accommodating cavity, the motor is drivingly connected to the first end of the first rotating rod, the second end of the first rotating rod is rotatably connected to the first surface of the oscillation plate, a lifting slider is arranged on the oscillation plate, the first end of the lifting slider is connected to the second surface of the oscillation plate, and the second end of the lifting slider is connected to the oscillation frame after passing through the lifting groove.

[0013] In one embodiment, the oscillation mechanism also includes: a second rotating rod, the second rotating rod is located in the accommodating cavity, the first end of the second rotating rod is rotatably connected to the second end of the first rotating rod, and the second end of the second rotating rod is rotatably connected to the first surface of the oscillation plate.

[0014] In one embodiment, a limit rod is provided on the flip plate, and the first end of the limit rod is connected to the first side of the flip plate. When the second end of the limit rod is aligned with the first side of the oscillation table, the second end of the limit rod is movably abutted against the first side of the oscillation table.

[0015] In one embodiment, a side wall of the accommodating cavity is provided with an accommodating opening, and when the second end of the limiting rod is aligned with the accommodating opening, the second end of the limiting rod is located in the accommodating cavity through the accommodating opening.

[0016] In one embodiment, the elastic member is a spring.

[0017] In one embodiment, the oscillation frame includes: a frame body, a placement plate and a limit plate, the first surface of the frame body is connected to the second end of the lifting slider, the rotating rod is rotatably arranged on the frame body, the first end of each elastic member is connected to one end of the frame body, the placement plate and the limit plate are arranged on the second surface of the frame body at intervals, the placement plate is provided with a plurality of placement holes, the limit plate is provided with a plurality of limit holes, each of the placement holes is aligned with a limit hole and connected to form an oscillation cavity.

[0018] In one embodiment, an elastic buffer layer is provided on a surface of the flip plate facing the limiting plate.

[0019] In one embodiment, the test tube oscillation device for detecting pesticide residues in tea leaves further includes: a connecting plate, a first surface of which is connected to the second end of the lifting slider, and a second surface of which is rotatably connected to the oscillation frame.

[0020] In one embodiment, the oscillation mechanism further includes: a reducer, which is arranged on the second side of the oscillation table, the motor is connected to the input end of the reducer, and the output end of the reducer is connected to the first end of the first rotating rod.

[0021] The invention has the beneficial effects as follows: a test tube oscillating device for detecting pesticide residues in tea provided by the invention comprises an oscillating frame with a plurality of oscillating cavities arranged on an oscillating table, an oscillating mechanism drivingly connected to the oscillating frame, a rotating rod of a limiting mechanism rotatably arranged on the oscillating frame, a flip plate connected to the rotating rod through a rotating block, and two ends of the matching flip plate are respectively connected to two ends of the oscillating frame through elastic members, so that when the oscillating test tube is used to mix samples and reagents, the flip plate is rotated to abut against the oscillating table, an external manipulator can clamp the test tube and place it in the oscillating cavity of the oscillating frame, the oscillating mechanism drives the oscillating frame to perform a lifting movement on the oscillating table, with the lifting and lowering of the oscillating frame and under the action of the elastic member, the flip plate connected to the rotating block can be driven to move close to the oscillating frame until the oscillating cavity is closed, and the flip plate abuts against the test tube in the oscillating cavity, so that when the test tube on the oscillating frame is oscillated, not only can the test tube be stably fixed on the oscillating frame, but also the sealing of the test tube when oscillating on the oscillating frame can be maintained, so that the sample and reagent in the test tube can be fully contacted and mixed, the parallelism of the detection is improved, and the detection accuracy is higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 A schematic diagram of the structure of a test tube oscillating device for detecting pesticide residues in tea leaves according to an embodiment;

[0024] Figure 2 A schematic diagram of the structure of a test tube oscillating device for detecting pesticide residues in tea leaves according to an embodiment;

[0025] Figure 3 A schematic diagram of the structure of a test tube oscillating device for detecting pesticide residues in tea leaves according to an embodiment;

[0026] Figure 4 A schematic diagram of the structure of a test tube oscillating device for detecting pesticide residues in tea leaves according to an embodiment;

[0027] Figure 5 The present invention is a schematic structural diagram of a test tube oscillating device for detecting pesticide residues in tea leaves according to an embodiment of the present invention.

[0028] In the accompanying drawings, 10, a test tube oscillating device for detecting pesticide residues in tea leaves; 100, an oscillating table; 110, a lifting slot; 120, a receiving port; 200, an oscillating frame; 201, an oscillating chamber; 210, a frame body; 220, a placing plate; 221, a placing hole; 230, a limiting plate; 231, a limiting hole; 300, a limiting mechanism; 310, a rotating rod; 320, a rotating block; 330, a flip plate; 331, an elastic buffer layer; 340, an elastic member; 400, an oscillating mechanism; 410, a motor; 420, a first rotating rod; 430, an oscillating plate; 440, a lifting slider; 450, a second rotating rod; 460, a reducer; 500, a limiting rod; 600, a first abutting block; 700, a second abutting block; 810, a slide rail; 820, a sliding block. DETAILED DESCRIPTION

[0029] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly understood.

[0030] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0032] In one embodiment, Figure 1 , Figure 2 and Figure 3 As shown, a test tube oscillation device 10 for detecting pesticide residues in tea leaves comprises: an oscillation table 100, an oscillation frame 200, a limiting mechanism 300 and an oscillation mechanism 400, wherein the oscillation frame 200 is lifted and arranged on a first side of the oscillation table 100, and a plurality of oscillation chambers 201 are provided on the oscillation frame 200, and the limiting mechanism 300 comprises: a rotating rod 310, a rotating block 320, a flip plate 330 and two elastic members 340, wherein the rotating rod 310 is rotatably arranged on the oscillation frame 200, and a first end of the rotating block 320 is connected to the rotating The rod 310 is connected, the second end of the rotating block 320 is connected to the first side of the flip plate 330, the two elastic members 340 are respectively located at the two ends of the oscillation table 100, the first end of each elastic member 340 is connected to one end of the oscillation frame 200, the second end of each elastic member 340 is connected to one end of the flip plate 330, the flip plate 330 is movably closed for each oscillation cavity 201, the oscillation mechanism 400 is arranged on the oscillation table 100, and the oscillation mechanism 400 is drivingly connected to the oscillation frame 200.

[0033] In the present embodiment, an oscillation frame 200 with a plurality of oscillation cavities 201 is lifted and lowered on the oscillation table 100, the oscillation mechanism 400 is used to drive the oscillation frame 200 to move in the vertical direction on the first side of the oscillation table 100, the rotating rod 310 of the limiting mechanism 300 is rotatably arranged on the oscillation frame 200, the flip plate 330 is connected to the rotating rod 310 through the rotating block 320, and the two ends of the matching flip plate 330 are respectively connected to the two ends of the oscillation frame 200 through elastic members 340, that is, the first end of the first elastic member 340 is connected to the first end of the oscillation frame 200, the second end of the first elastic member 340 is connected to the first end of the flip plate 330, the first end of the second elastic member 340 is connected to the second end of the oscillation frame 200, and the second end of the second elastic member 340 is connected to the flip plate 330. 0, when the oscillation frame 200 rises to the highest point on the oscillation table 100, the flip plate 330 can move towards the oscillation table 100 under the action of the elastic member 340, and the flip plate 330 can abut against the outer surface of the oscillation table 100. At this time, the oscillation cavity 201 is in an open state. When the oscillation frame 200 gradually descends on the oscillation table 100, the flip plate 330 can move away from the oscillation table 100 under the action of the elastic member 340, and the flip plate 330 can abut against the outer surface of the oscillation frame 200 and close each oscillation cavity 201. At this time, the flip plate 330 can abut against the test tube in the oscillation cavity 201, so that the position of the test tube in the oscillation cavity 201 is relatively fixed, thereby preventing the test tube from detaching from the oscillation frame 200 during the oscillation process.

[0034] In this embodiment, when the test tube is shaken to mix samples and reagents, the shaking frame 200 rises to the highest point on the shaking table 100, and the flip plate 330 rotates to abut against the shaking table 100, so that the shaking chamber 201 is in an open state. In this way, the external manipulator can clamp the test tube and place it in the shaking chamber 201 of the shaking frame 200, and then the shaking mechanism 400 drives the shaking frame 200 to do a lifting movement on the shaking table 100. As the shaking frame 200 descends and under the action of the elastic member 340, the flip plate 330 connected to the rotating block 320 can be driven to move closer to the shaking frame 200. The flip plate 330 moves until the oscillation chamber 201 is closed, and can abut against the test tube in the oscillation chamber 201. Therefore, when the test tube on the oscillation rack 200 is oscillated, not only can the test tube be stably fixed on the oscillation rack 300 and the position of the test tube in the oscillation chamber 201 be kept relatively fixed, but also the sealing of the test tube when oscillating on the oscillation rack 300 can be maintained to prevent leakage during the oscillation process. The test tube on the oscillation rack 200 can be oscillated well, so that the sample and reagent in the test tube can be fully contacted and mixed, thereby improving the parallelism of the detection and making the detection accuracy higher.

[0035] It is worth noting that the automated shaking of the test tubes can improve the parallelism of the shaking extraction of each batch of samples, and the test tubes are in a sealed state, that is, during the shaking process, the samples and reagents in the test tubes will not overflow. By pressing the test tubes against each other by the flip plate 330, the sealing of the test tubes during the shaking process can be further improved.

[0036] In one embodiment, Figure 3 and Figure 5 As shown, a first abutment block 600 is rotatably provided on the oscillation table 100, and the rotating block 320 is movably abutted against the first abutment block 600. In this way, when the flip plate 330 moves towards the oscillation table 100 under the action of the elastic member 340, the rotating block 320 is movably abutted against the first abutment block 600, which can play a buffering role, and can prevent the flip plate 330 from directly abutting against the outer surface of the oscillation table 100, thereby protecting the flip plate 330.

[0037] In one embodiment, Figure 3 and Figure 5 As shown, the second side of the flip plate 330 is rotatably provided with a second abutment block 700. When the oscillation frame 200 rises to the highest point on the oscillation table 100 and the flip plate 330 is unable to move in a direction close to the oscillation table 100 under the action of the elastic member 340, an external manipulator can act on the second abutment block 700 to give the flip plate 330 a force to move in a direction close to the oscillation table 100, i.e., the direction of the force of the elastic member 340 is changed, thereby breaking the equilibrium state between the elastic member 340 and the flip plate 330, so that the flip plate 330 can move in a direction close to the oscillation table 100 under the action of the elastic member 340, so that the oscillation chamber 201 is in an open state. When the oscillation frame 200 gradually descends on the oscillation table 100, when the flip plate 330 is unable to move towards the oscillation frame 200 under the action of the elastic member 340, an external manipulator can act on the second abutment block 700 to give the flip plate 330 a force to move towards the oscillation frame 200, that is, the direction of the force of the elastic member 340 is changed, thereby breaking the equilibrium state between the elastic member 340 and the flip plate 330, so that under the action of the elastic member 340, the flip plate 330 can move towards the oscillation frame 200 and close the oscillation cavity 201, so that the opening and closing of the flip plate 330 can be better completed by an external manipulator.

[0038] In one embodiment, Figure 4 and Figure 5As shown, the oscillation mechanism 400 includes: a motor 410, a first rotating rod 420 and an oscillation plate 430. A accommodating cavity is opened in the oscillation table 100, and a lifting groove 110 is opened on the side wall of the accommodating cavity. The motor 410 is arranged on the second side of the oscillation table 100, and the first rotating rod 420 and the oscillation plate 430 are located in the accommodating cavity. The motor 410 is drivingly connected to the first end of the first rotating rod 420, and the second end of the first rotating rod 420 is rotatably connected to the first surface of the oscillation plate 430. A lifting slider 440 is arranged on the oscillation plate 430, and the first end of the lifting slider 440 is connected to the second surface of the oscillation plate 430, and the second end of the lifting slider 440 passes through the lifting groove 110 and is connected to the oscillation frame 200. Specifically, the motor 410 of the oscillation mechanism 400 is driven and connected to the first rotating rod 420, and the first rotating rod 420 and the oscillation plate 430 are rotatably connected in turn, and the lifting slider 440 on the oscillation plate 430 passes through the lifting slot 110 of the oscillation table 100 and is connected to the oscillation frame 200, which can drive the oscillation frame 200 to perform lifting and lowering movements on the oscillation table 100, thereby being able to oscillate and mix the samples and reagents in the test tubes on the oscillation frame 200, so that the samples and reagents in the test tubes can be fully mixed.

[0039] In one embodiment, Figure 4 and Figure 5 As shown, the oscillation mechanism 400 further includes: a second rotating rod 450, the second rotating rod 450 is located in the accommodating chamber, the first end of the second rotating rod 450 is rotatably connected to the second end of the first rotating rod 420, and the second end of the second rotating rod 450 is rotatably connected to the first surface of the oscillation plate 430. Specifically, the motor 410 of the oscillation mechanism 400 is drivingly connected to the first rotating rod 420, and the first rotating rod 420, the second rotating rod 450 and the oscillation plate 430 are rotatably connected in sequence. Due to the provision of the second rotating rod 450, not only can the oscillation rack 200 have a larger lifting range, but also the lifting speed of the oscillation rack 200 can change regularly during the lifting process, and has a larger variation range, so that the test tube on the oscillation rack 200 can be better oscillated, so that the sample and reagent in the test tube can be more fully mixed.

[0040] It is worth mentioning that the oscillation frame 200 is driven to do lifting movement through the oscillation mechanism 400, and the samples and reagents in the test tubes on the oscillation frame 200 are oscillated and mixed. The effect of simulating the manual oscillation of the test personnel can be achieved by adjusting the vibration amplitude, frequency and time, which is beneficial to the extraction of pesticide residues in tea, and makes the oscillation extraction of each batch have better parallelism, thereby having higher detection accuracy and ensuring the accuracy of the test results.

[0041] In one embodiment, Figure 4 and Figure 5 As shown, a slide rail 810 is provided on the side wall of the accommodating cavity, and a sliding block 820 is provided on the second surface of the oscillation plate 430, and the sliding block 820 is slidably provided on the slide rail 810. Specifically, by providing the slide rail 810 on the side wall of the accommodating cavity, the sliding block 820 on the oscillation plate 430 is slidably provided on the slide rail 810, which can play a guiding role, so that the oscillation plate 430 can better move in the vertical direction, thereby better driving the oscillation frame 200 to move in the vertical direction.

[0042] In one embodiment, Figure 4 and Figure 5 As shown, the number of the lifting sliders 440 is set to two or more, and the number of the lifting slots 110 is equal to the number of the lifting sliders 440. Specifically, the lifting sliders 440 are evenly distributed on the second surface of the oscillation plate 430, and the lifting slots 110 are evenly distributed on the first side of the oscillation table 100. By providing a plurality of lifting sliders 440, the oscillation frame 200 can be better connected to the oscillation plate 430, so that the oscillation plate 430 can more stably drive the oscillation frame 200 to move in the vertical direction.

[0043] In one embodiment, Figure 2 As shown, a limit rod 500 is provided on the flip plate 330, and the first end of the limit rod 500 is connected to the first side of the flip plate 330. When the second end of the limit rod 500 is aligned with the first side of the oscillation table 100, the second end of the limit rod 500 is movably abutted against the first side of the oscillation table 100. Specifically, by providing the limit rod 500, when the oscillation frame 200 performs a lifting movement on the oscillation table 100, the second end of the limit rod 500 is aligned with the first side of the oscillation table 100, and the second end of the limit rod 500 can be movably abutted against the first side of the oscillation table 100, thereby preventing the flip plate 330 from moving away from the oscillation frame 200 during the lifting process of the oscillation frame 200, thereby more stably fixing the test tube on the oscillation frame 200 and keeping the position of the test tube in the oscillation chamber 201 relatively fixed.

[0044] In one embodiment, Figure 2As shown, the side wall of the accommodating cavity is provided with an accommodating opening 120, and when the second end of the limiting rod 500 is aligned with the accommodating opening 120, the second end of the limiting rod 500 is located in the accommodating cavity through the accommodating opening 120. Specifically, when the oscillation frame 200 rises to the highest point on the oscillation table 100, the flip plate 330 moves in the direction close to the oscillation table 100 under the action of the elastic member 340, and the flip plate 330 abuts against the outer surface of the oscillation table 100, the limiting rod 500 can be located in the accommodating cavity through the accommodating opening 120, and plays the role of storing the limiting rod 500, which can avoid the limiting rod 500 abutting against the outer surface of the oscillation table 100, affecting the flipping degree of the flip plate 330, so that the flip plate 330 can stably abut against the outer surface of the oscillation table 100 under the action of the elastic member 340.

[0045] In one embodiment, the elastic member 340 is a spring. Specifically, the spring has good elastic deformation ability, and can give a force to the flip plate 330 by changing the direction of the force of the spring, so that the flip plate 330 moves toward or away from the vibration table 100, and the flip plate 330 can stably abut against the outer surface of the vibration table 100 or the outer surface of the vibration frame under the action of the spring.

[0046] In one embodiment, Figure 3 As shown, the oscillation frame 200 includes: a frame body 210, a placement plate 220 and a limit plate 230. The first surface of the frame body 210 is connected to the second end of the lifting slider 440. The rotating rod 310 is rotatably arranged on the frame body 210. The first end of each elastic member 340 is connected to one end of the frame body 210. The placement plate 220 and the limit plate 230 are arranged at intervals on the second surface of the frame body 210. A plurality of placement holes 221 are opened on the placement plate 220, and a plurality of limit holes 231 are opened on the limit plate 230. Each of the placement holes 221 is aligned with a limit hole 231 and is connected to form an oscillation cavity 201. Specifically, first connecting columns are respectively provided at both ends of the rack body 210, second connecting columns are respectively provided at both ends of the flip plate 330, and both ends of the elastic member 340 are respectively connected to the first connecting column and the second connecting column. The placement plate 220 and the limiting plate 230 are arranged on the second surface of the rack body 210 with an interval up and down. The limiting plate 230 is located above the placement plate 220. When the test tube is shaken to mix the sample and reagent in the test tube, the manipulator clamps the test tube through the limiting hole 231 and places it on the placement plate 220, that is, the bottom of the test tube abuts against the outer edge of the placement hole 221, and the outer surface of the test tube abuts against the side wall of the limiting hole 231. The test tube can be stably placed in the shaking chamber 201, so that the test tube can be stably placed on the shaking rack 200.

[0047] In one embodiment, an elastic limiting layer is provided on the side wall of the limiting hole 231. Specifically, the elastic limiting layer is a rubber layer, and the rubber has good elasticity. When the test tube is clamped by the manipulator and placed in the oscillation chamber 201, the rubber layer can play a good limiting role by elastic deformation, so that the test tube can be placed in the oscillation chamber 201 of the oscillation frame 200 more stably.

[0048] In one embodiment, Figure 3 As shown, the width of the end of the limiting hole 231 away from the placement hole 221 is greater than the width of the end of the limiting hole 231 close to the placement hole 221. Specifically, by setting the width of the first end of the limiting hole 231 to be greater than the width of the second end, it is convenient for the manipulator to clamp the test tube through the limiting hole 231 and place the test tube on the placement plate 220.

[0049] In one embodiment, Figure 3 As shown, an elastic buffer layer 331 is provided on the side of the flip plate 330 facing the limit plate 230. Specifically, the elastic buffer layer 331 is a sponge layer, and the sponge has good elasticity. When the flip plate 330 moves away from the oscillation table 100 under the action of the elastic member 340 and abuts against the test tube in the oscillation chamber 201, the sponge layer can play a good buffering role by elastic deformation, which can prevent the flip plate 330 from directly abutting against the test tube, thereby preventing the test tube from being damaged due to collision.

[0050] In one embodiment, the test tube oscillation device 10 for detecting pesticide residues in tea leaves further includes: a connecting plate, a first surface of the connecting plate being connected to the second end of the lifting slider 440, and a second surface of the connecting plate being rotatably connected to the oscillation frame 200. Specifically, the first surface of the connecting plate is connected to the lifting slider 440, the oscillation frame 200 rotates with the second surface of the connecting plate, and when the oscillation plate 430 drives the oscillation frame 200 to move in the vertical direction through the connecting plate, the oscillation frame 200 can also move in the horizontal direction on the connecting plate, so that the test tube on the oscillation frame 200 can be oscillated from two directions, and the sample and reagent in the test tube can be mixed more fully.

[0051] In one embodiment, Figure 4 and Figure 5As shown, the oscillation mechanism 400 further includes: a reducer 460, the reducer 460 is arranged on the second side of the oscillation table 100, the motor 410 is connected to the input end of the reducer 460, and the output end of the reducer 460 is connected to the first end of the first rotating rod 420. Specifically, by further providing the reducer 460, the speed of the high-speed rotating input shaft can be reduced to the required low-speed output, and the torque can also be increased, which plays a role in improving mechanical efficiency and protecting the motor 410, so that the first rotating rod 420 can be better driven to rotate.

[0052] Compared with the prior art, the present invention has at least the following advantages:

[0053] The invention provides a test tube oscillating device for detecting pesticide residues in tea leaves. The device comprises an oscillating frame with a plurality of oscillating cavities which is lifted and lowered on an oscillating table, an oscillating mechanism drivingly connected to the oscillating frame, a rotating rod of a limiting mechanism rotatably arranged on the oscillating frame, a flip plate connected to the rotating rod through a rotating block, and two ends of the matching flip plate are respectively connected to two ends of the oscillating frame through elastic members, so that when the test tube is oscillated to mix samples and reagents, the flip plate is rotated to abut against the oscillating table, an external manipulator can clamp the test tube and place it in the oscillating cavity of the oscillating frame, and the oscillating mechanism drives the oscillating frame to perform lifting and lowering motion on the oscillating table. With the lifting and lowering of the oscillating frame and under the action of the elastic member, the flip plate connected to the rotating block can be driven to move in a direction close to the oscillating frame until the oscillating cavity is closed, and the flip plate abuts against the test tube in the oscillating cavity, so that when the test tube on the oscillating frame is oscillated, not only can the test tube be stably fixed on the oscillating frame, but also the sealing of the test tube when oscillating on the oscillating frame can be maintained, so that the sample and reagent in the test tube can be fully contacted and mixed, the parallelism of the detection is improved, and the detection accuracy is higher.

[0054] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0055] The above-mentioned embodiments only express several embodiments of the present application, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the invention patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present application, which all belong to the protection scope of the present application. Therefore, the protection scope of the patent of this application shall be based on the attached claims.

Claims

1. A test tube oscillating device for detecting pesticide residues in tea, characterized in that: include: Oscillating table; An oscillation frame, the oscillation frame is lifted and arranged on the first side of the oscillation platform, and a plurality of oscillation chambers are provided on the oscillation frame; A limiting mechanism, the limiting mechanism comprising: a rotating rod, a rotating block, a flip plate and two elastic members, the rotating rod is rotatably arranged on the oscillation frame, the first end of the rotating block is connected to the rotating rod, the second end of the rotating block is connected to the first side of the flip plate, the two elastic members are respectively located at the two ends of the oscillation table, the first end of each elastic member is connected to one end of the oscillation frame, the second end of each elastic member is connected to one end of the flip plate, and the flip plate movably closes each oscillation cavity; An oscillation mechanism is arranged on the oscillation table and is drivingly connected to the oscillation frame.

2. The test tube oscillating device for detecting pesticide residues in tea leaves according to claim 1, characterized in that: The oscillation mechanism includes: a motor, a first rotating rod and an oscillation plate, a accommodating chamber is provided in the oscillation table, a lifting groove is provided on the side wall of the accommodating chamber, the motor is arranged on the second side of the oscillation table, the first rotating rod and the oscillation plate are located in the accommodating chamber, the motor is drivingly connected to the first end of the first rotating rod, the second end of the first rotating rod is rotatably connected to the first surface of the oscillation plate, a lifting slider is provided on the oscillation plate, the first end of the lifting slider is connected to the second surface of the oscillation plate, and the second end of the lifting slider is connected to the oscillation frame after passing through the lifting groove.

3. The test tube oscillating device for detecting pesticide residues in tea according to claim 2, characterized in that: The oscillation mechanism further includes: a second rotating rod, the second rotating rod is located in the accommodating cavity, the first end of the second rotating rod is rotatably connected to the second end of the first rotating rod, and the second end of the second rotating rod is rotatably connected to the first surface of the oscillation plate.

4. The test tube oscillating device for detecting pesticide residues in tea according to claim 2, characterized in that: A limiting rod is provided on the flip plate, a first end of the limiting rod is connected to a first side of the flip plate, and when the second end of the limiting rod is aligned with the first side of the oscillation table, the second end of the limiting rod is movably abutted against the first side of the oscillation table.

5. The test tube oscillating device for detecting pesticide residues in tea leaves according to claim 3, characterized in that: The side wall of the accommodating cavity is provided with an accommodating opening. When the second end of the limiting rod is aligned with the accommodating opening, the second end of the limiting rod is located in the accommodating cavity through the accommodating opening.

6. The test tube oscillating device for detecting pesticide residues in tea leaves according to claim 1, characterized in that: The elastic member is a spring.

7. The test tube oscillating device for detecting pesticide residues in tea leaves according to claim 2, characterized in that: The oscillation frame includes: a frame body, a placement plate and a limit plate. The first surface of the frame body is connected to the second end of the lifting slider. The rotating rod is rotatably arranged on the frame body. The first end of each elastic member is connected to one end of the frame body. The placement plate and the limit plate are arranged on the second surface of the frame body at intervals. A plurality of placement holes are provided on the placement plate, and a plurality of limit holes are provided on the limit plate. Each of the placement holes is aligned with a limit hole and connected to form an oscillation cavity.

8. The test tube oscillating device for detecting pesticide residues in tea leaves according to claim 7, characterized in that: An elastic buffer layer is arranged on a surface of the flip plate facing the limiting plate.

9. The test tube oscillating device for detecting pesticide residues in tea leaves according to claim 2, characterized in that: Also includes: A connecting plate, wherein a first surface of the connecting plate is connected to the second end of the lifting slider, and a second surface of the connecting plate is rotationally connected to the vibration frame.

10. The test tube oscillating device for detecting pesticide residues in tea leaves according to claim 2, characterized in that: The oscillation mechanism further includes: a reducer, which is arranged on the second side of the oscillation platform, the motor is connected to the input end of the reducer, and the output end of the reducer is connected to the first end of the first rotating rod.

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