Pesticide residue detection instrument for plant-derived food
By integrating the reaction tray and crushing mechanism in plant-derived food detection instruments, the problems of low detection efficiency and poor accuracy in the prior art are solved, and efficient cleaning and crushing of plant-derived foods are achieved, and the skin adhesion and detection of skin adhesion and Pesticide residues accumulated internally.
Patent Information
- Application Number
- CN202310770054.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-06-27
- Publication Date
- 2024-12-27
AI Technical Summary
The existing pesticide residue detection technology is complex in operation and low in detection efficiency, making it difficult to accurately detect the amount of pesticide residues in plant-derived foods, especially the amount of pesticide residues accumulated inside.
A plant-derived food pesticide residue detection instrument including a reaction tray mechanism, a cleaning and storage mechanism, a crushing mechanism and a main control computer was designed. By improving the cooperation between the cleaning mechanism and the crushing mechanism, the cleaning and crushing of plant-derived food was realized. And use the reaction disk mechanism to conduct pesticide residue unit testing to ensure accurate detection.
It realizes efficient cleaning and crushing of plant-derived foods, can accurately detect the adhesion of the outer skin and the accumulated pesticide residues inside, improves detection efficiency and accuracy, and simplifies the operation process.
Smart Images
Figure HDA0004307799780000011 
Figure HDA0004307799780000021 
Figure HDA0004307799780000031
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of pesticide residue detection, and relates to a pesticide residue detection instrument for plant-derived food. Background Art
[0002] Plant-based food raw materials include vegetables (except potatoes, cassava, and sweet corn), edible fungi, grains and beans (except barley, wheat, rye, corn, and soybeans), oilseeds and oilseeds (except rapeseed), dried nuts, kernels, tea, cocoa and coffee raw materials, plant-based condiments, and plant-based Chinese medicinal materials that can also be used as food (wolfberry, ginseng, American ginseng, and chrysanthemum).
[0003] Plant-based foods are often sprayed with pesticides to prevent pests and fertilized with farmyard manure (pig manure, etc.). Almost all agricultural products may contain pesticide residues.
[0004] Pesticide residues refer to trace amounts of pesticides that remain in organisms, agricultural products (or food) and the environment after pesticide use. In addition to the pesticides themselves, they also include toxic metabolites and impurities of pesticides. It is a general term for pesticides and other related substances. The amount of remaining pesticide residues is called the residue, which is expressed in milligrams per kilogram of sample (mg / kg). Pesticide residues are an inevitable phenomenon after pesticide application, but if the maximum residue limit standard is exceeded, there will be a risk of adverse effects on humans and animals or poisoning organisms in the ecosystem through the food chain.
[0005] With the construction of pesticide legal system and the continuous improvement of people's requirements for food safety, the problem of pesticide residues has been greatly improved in recent years, but there are still many problems. Most pesticides follow the recommended dosage, application method, time and frequency, and the pesticide residues in agricultural and sideline products will not exceed the national standards and will not cause harm. But in fact, pesticide residues exceeding the national standards still occur from time to time. The main reasons include: failure to apply pesticides according to regulations, resulting in excessive pesticide residues: pesticide residues are the total residues of pesticide original bodies and their toxic metabolites and impurities, and the residual time is long: residual pesticides can be enriched in agricultural and livestock products through the food chain. In the past, trace amounts of pesticides that remained in the environment are still enriched in livestock and poultry through the food chain. There are also medicinal pesticides whose medicinal properties determine the degree of their residues. For example, organic arsenic, mercury and other pesticides, due to their metabolites arsenic, mercury, etc., cannot be degraded and remain in the environment and plants, causing long-term pollution to humans, plants and the environment. Organochlorine pesticides and their metabolites are chemically stable, slowly degrade in crops and the environment, and easily accumulate in the fat of humans and animals. Therefore, although the toxicity of organochlorine pesticides and their metabolites is not high, their residue problems are long-term.
[0006] At present, liquid chromatography is usually used for detection. This type of equipment has the characteristics of high sensitivity and wide detection range. However, the operation is complicated and the detection efficiency is low.
[0007] Based on this, we propose a pesticide residue detection instrument for plant-derived foods, which can clean, crush and pulp plant-derived foods, and effectively detect pesticide residues in the cleaning liquid and crushed pulp with accurate detection. Summary of the invention
[0008] The purpose of the present invention is to address the above-mentioned problems in the existing technology and to propose an instrument for detecting pesticide residues in plant-derived foods. The technical problem to be solved by the invention is: how to clean, crush and pulp plant-derived foods, and effectively and accurately detect pesticide residues in the cleaning liquid and crushed pulp.
[0009] The purpose of the present invention can be achieved by the following technical solutions:
[0010] A pesticide residue detection instrument for plant-derived food comprises a reaction disk mechanism, a cleaning and storage mechanism, a reagent disk mechanism, a test tube box and a main control computer which are arranged in sequence, wherein a crushing mechanism and a lifting and cleaning mechanism are arranged in sequence on the rear side of the cleaning and storage mechanism, the lifting and cleaning mechanism is located above the crushing mechanism, a waste liquid bucket and a clean water bucket are arranged on the side of the lifting and cleaning mechanism, a lifting and injection mechanism is arranged on the front side of the cleaning and storage mechanism, water pumps are arranged below the crushing mechanism and the lifting and cleaning mechanism, one of the water pumps respectively connects the crushing mechanism and the lifting and cleaning mechanism with the waste liquid bucket, one of the water pumps respectively connects the crushing mechanism with the reaction disk mechanism, an injection pump is arranged above the waste liquid bucket and the clean water bucket, and the injection pump above the clean water bucket is respectively connected to the reaction disk mechanism, the crushing mechanism and the lifting and cleaning mechanism.
[0011] The working principle of the present invention is as follows: the main control computer controls various electrical components, places the test tubes in the test tube box on the reagent tray mechanism, and injects various reagent solutions into several reagent tubes on the reagent tray mechanism;
[0012] The plant-derived food to be tested (such as beans, vegetables, etc.) is placed inside the lifting and cleaning mechanism. The injection pump injects the clean water in the clean water bucket into the cleaning mechanism for one cleaning. A portion of the primary cleaning liquid is taken out through one of the water pumps and injected into the reaction disk mechanism. The lifting and injection mechanism extracts various reagent liquids in several reagent tubes on the reagent disk mechanism in turn and injects them into the reaction disk mechanism to perform a cleaning liquid pesticide residue unit detection amount, which is recorded as A1. After the detection is completed, the injection pump above the clean water bucket injects clean water into the reaction disk mechanism for cleaning, and the rest of the primary cleaning liquid is all injected into the waste liquid bucket through one of the water pumps;
[0013] The injection pump injects the clean water in the clean water bucket into the cleaning mechanism for primary cleaning, and takes part of the secondary cleaning liquid through one of the water pumps and injects it into the reaction disk mechanism. The lifting and injection mechanism extracts various reagent liquids in several reagent tubes on the reagent disk mechanism in turn and injects them into the reaction disk mechanism for secondary cleaning liquid pesticide residue unit detection amount, which is recorded as A2. After the detection is completed, the injection pump above the clean water bucket injects clean water into the reaction disk mechanism for cleaning;
[0014] The cleaning mechanism is opened, and the remaining secondary cleaning liquid and plant-derived food fall into the pulverizing mechanism. The injection pump injects the clean water in the clean water bucket into the pulverizing mechanism to obtain a uniform pulverized slurry. A portion of the pulverized slurry is taken out through one of the water pumps and injected into the reaction disk mechanism. The lifting and injection mechanism extracts various reagent liquids in several reagent tubes on the reagent disk mechanism in turn and injects them into the reaction disk mechanism to perform a unit detection amount of pesticide residues in the pulverized slurry, which is recorded as A3. After the detection is completed, the injection pump above the clean water bucket injects clean water into the reaction disk mechanism for cleaning, and the remaining pulverized slurry is all injected into the waste liquid bucket through one of the water pumps;
[0015] All detection information is transmitted to the main control computer for analysis to obtain the detection information of pesticide residues adhered to the skin and accumulated inside the plant-based food. The amount of pesticide residues adhered to the skin is A1+A2, and the amount of pesticide residues accumulated inside is A3-A2.
[0016] The lifting and cleaning mechanism comprises a cleaning bracket, a cleaning motor, a dual-axis output device and a cleaning box are fixed on the upper end of the cleaning bracket, the cleaning box is connected to the injection pump above the clean water bucket, a pulley transmission pair is provided between the output shaft of the cleaning motor and the input shaft of the dual-axis output device, two cleaning rotating shafts are provided for rotation inside the cleaning box, the two cleaning rotating shafts are respectively connected to the output shafts of the dual-axis output devices at corresponding positions through transmission gear pairs, a plurality of rubber fixing plates are fixed on the cleaning rotating shafts, cleaning cotton plates are fixed at the ends of the rubber fixing plates, two liquid outlet pipes are provided on both sides of the bottom of the cleaning box, one of the liquid outlet pipes is connected to the waste liquid bucket through a water pump, and the other liquid outlet pipe is connected to the reaction disk mechanism through a water pump, and the cleaning A discharge port is provided in the middle of the bottom of the box, a discharge flap is hingedly provided at the bottom of the cleaning box, the discharge flap is located directly below the discharge port, a flip push rod is hingedly provided between the discharge flap and the cleaning bracket, a discharge hopper is fixed at the lower end of the cleaning bracket, the discharge hopper is located directly below the discharge port, a lifting motor is fixed at the upper end of the cleaning box, a slide is fixed at the side of the cleaning bracket, a fixed pulley is provided at the upper end of the slide, a lifting hopper is slidably provided on the slide, a pull rope is provided between the lifting hopper and the output shaft of the lifting motor, the pull rope is engaged with the fixed pulley, a material tapping plate is provided at the bottom of the lifting hopper, a material tapping motor is provided at the side of the lifting hopper, the output shaft of the material tapping motor is transmission-connected to the rotating shaft of the material tapping plate, and a feeding port is provided at the upper end of the cleaning box.
[0017] With the above structure, the plant-derived food to be tested (such as beans, vegetables, etc.) is placed inside the lifting hopper, the lifting motor is started, the output shaft of the lifting motor rotates, the pull rope is rolled up, the pull rope moves along the fixed pulley, and the lifting hopper is pulled upward along the slide. When it moves to the top of the cleaning box, the output shaft of the material-dispensing motor drives the rotating shaft of the material-dispensing plate to rotate, the material-dispensing plate is placed vertically, and the plant-derived food inside the lifting hopper falls into the cleaning box from the feeding port. The injection pump above the clean water bucket injects clean water into the cleaning box, and the output shaft of the cleaning motor drives the input shaft of the dual-axis output device to rotate through the pulley transmission pair, and the dual-axis output The two output shafts of the device respectively drive the two cleaning shafts at the corresponding positions to rotate, the cleaning shaft drives the several rubber fixing plates thereon to rotate, the rubber fixing plates drive the cleaning cotton plates to rotate, the cleaning cotton plates clean the plant-derived food, and a part of the cleaning liquid is taken through one of the water pumps through one of the liquid outlet pipes and injected into the reaction disk mechanism to perform pesticide residue detection on the cleaning liquid. After the detection is completed, the remaining cleaning liquid is all injected into the waste liquid barrel through another liquid outlet pipe through one of the water pumps for collection and treatment; multiple cleanings can be performed as needed, and the cleaning liquid is tested for pesticide residues each time to obtain the detection information of pesticide residues adhered to the outer skin;
[0018] The flip push rod extends out, driving the discharging flap to rotate, and the discharging flap is placed vertically, and the cleaned plant-derived food and cleaning liquid fall out, fall into the discharging hopper through the discharging port, and fall into the inside of the crushing mechanism.
[0019] The pulverizing mechanism comprises a pulverizing bracket, a heat preservation box is fixed on the pulverizing bracket, a liquid injection pipe is arranged at the lower end of the heat preservation box, a pulverizing box is fixed inside the heat preservation box, a heat preservation chamber is formed between the heat preservation box and the pulverizing box, an electric heating rod and a temperature sensor are fixed on the heat preservation box, the electric heating rod and the temperature sensor extend into the heat preservation chamber, a feed port is arranged on one side of the upper end of the pulverizing box, the feed port is located directly below the discharge hopper, a plurality of injection pipes are arranged on the other side of the upper end of the pulverizing box, wherein the injection pipes are connected to the liquid injection pump above the clean water bucket, and the upper end of the pulverizing box is fixed There is a fixed frame, on which an auxiliary cutter motor and a main cutter motor are fixed, the main cutter motor is located in the middle of the fixed frame, the output shafts of the auxiliary cutter motor and the main cutter motor both extend into the interior of the crushing box, the main cutter shaft is fixed to the end of the output shaft of the main cutter motor, and the auxiliary cutter shaft is fixed to the end of the output shaft of the auxiliary cutter motor, a discharge pipe is fixed to the lower end of the crushing box, the discharge pipe passes through and extends out of the insulation box, a multi-way electric control valve is provided at the lower end of the discharge pipe, and the multi-way electric control valve is respectively connected to the waste liquid barrel and the reaction disk mechanism through a water pump.
[0020] With the above structure, the cleaned plant-derived food and the remaining secondary cleaning liquid fall into the interior of the crushing box through the feed port, and the injection pump injects the clean water in the clean water bucket into the interior of the crushing box through the injection pipe. The output shaft of the main cutter motor drives the main cutter shaft to rotate, and the output shaft of the auxiliary cutter motor drives the auxiliary cutter shaft to rotate to crush the plant-derived food. At the same time, it has a stirring function to make the crushing more uniform. The electric heating rod heats the clean water inside the insulation chamber and heats the crushing box. The temperature sensor extends into the hot water inside the insulation chamber to monitor the temperature and control the crushing temperature to ensure the subsequent pesticide residue detection effect. The uniformly crushed slurry enters the discharge pipe, and the multi-way electric control valve controls the liquid outlet. A part of the uniformly crushed slurry is injected into the reaction disk mechanism through the water pump to carry out the unit detection of pesticide residues in the crushed slurry, and the rest of the crushed slurry is all injected into the waste liquid barrel through one of the water pumps.
[0021] The reaction disk mechanism comprises a reaction disk frame, a heating ring is fixed on the upper end of the reaction disk frame, a first fixing frame is fixed on the side of the reaction disk frame, a first motor is fixed on the first fixing frame, a driving shaft is provided in the middle of the reaction disk frame, a first pulley pair is provided between the output shaft of the first motor and the driving shaft, a reaction disk is fixed on the upper end of the driving shaft, the reaction disk is located directly above the heating ring, a first counting disk is fixed on the lower end of the driving shaft, a first counting sensor is fixed on the reaction disk frame, an edge of the first counting disk passes through the first counting sensor, a first adjusting motor is fixed on the lower end of the reaction disk frame, and a fixed A fixed plate, a first transmission belt is rotatably provided on the fixed plate, one of the rotating shafts of the first transmission belt is sensor-connected to the output shaft of the first adjusting motor, a slider is slidably provided on the fixed plate, the slider is fixedly connected to the first transmission belt, a support rod is fixed to the upper end of the slider, a support frame is fixed to the upper end of the support rod, a fixed block is provided inside the support frame, a plurality of liquid guide tubes are provided between the fixed block and the support frame, the support frame is located above the reaction disk, one of the liquid guide tubes is connected to the liquid injection pump above the clean water bucket, one of the liquid guide tubes is connected to the multi-way electric control valve, and a plurality of square storage holes evenly distributed around the circumference are opened on the reaction disk.
[0022] With the above structure, the output shaft of the first motor drives the driving shaft to rotate through the first pulley pair, and the driving shaft drives the reaction disk and the first counting disk to rotate synchronously. The first counting disk cooperates with the first counting sensor to control the first motor to be powered on and off, so that the output shaft of the first motor rotates in a gap, thereby driving the reaction disk to rotate in a gap. A number of reaction cylinders are placed on the reaction disk, and the heating ring controls the temperature of the number of reaction cylinders. Before the rotation, the output shaft of the first adjustment motor drives one of the rotating shafts of the first transmission belt to rotate, so that the first transmission belt drives the slider to slide upward on the fixed plate, driving the support rod to slide upward. At this time, the fixed block and the support frame move upward, driving the number of liquid guide tubes to move upward. After the rotation, the output shaft of the adjustment motor drives one of the rotating shafts of the first transmission belt to rotate in the opposite direction, and the first transmission belt drives the slider to slide downward on the fixed plate. The number of liquid guide tubes are inserted upward into the number of reaction cylinders, and the first cleaning liquid, the second cleaning liquid, and the crushing slurry are respectively injected through the number of liquid guide tubes to perform pesticide residue detection. After the detection, the injection pump above the clean water bucket injects clean water into the reaction cylinder through the liquid guide tube to clean the reaction cylinder.
[0023] The cleaning storage mechanism includes a material injection rack, which is C-shaped. A cleaning storage cylinder is fixed to the upper end of the material injection rack. A three-way electric control valve is provided at the lower end of the cleaning storage cylinder. The other two ends of the three-way electric control valve are connected to the waste liquid bucket and the clean water bucket through control pumps.
[0024] With the above structure, the control pump draws clean water from the clean water bucket into the cleaning storage cylinder through the three-way electric control valve, cleans the sample adding needle of the lifting and filling mechanism inside, and the cleaning waste liquid is drawn into the waste liquid bucket through the control pump for reciprocating circulation.
[0025] The lifting and filling mechanism includes a filling frame, a second adjusting motor and an indexing motor are fixed to the side of the filling frame, a second transmission belt is rotatably provided between the output shaft of the second adjusting motor and the filling frame, a rotating slide rod is rotatably provided on the filling frame, an indexing pulley pair is provided between the rotating slide rod and the output shaft of the indexing motor, a indexing rod is slidably provided on the rotating slide rod, a sliding groove is provided on the rotating slide rod, a sliding protrusion is provided on the indexing rod, and the sliding protrusion is slidably arranged inside the sliding groove, a clamping rotating seat is fixed on the second transmission belt, an annular groove is provided inside the clamping rotating seat, a slip ring is fixed to the lower end of the indexing rod, the slip ring is slidably arranged inside the annular groove, a mounting plate is fixed to the upper end of the indexing rod, a sample adding syringe is provided at the end of the mounting plate, and an electric injection pump is provided at the end of the sample adding syringe.
[0026] With the above structure, the output shaft of the second adjusting motor drives the rotating shaft of the second transmission belt to rotate, so that the second transmission belt drives the clamping rotating seat to rise and fall, and the slip ring cooperates with the ring groove to drive the indexing rod to rise and fall. At this time, the sliding protrusion slides along the inside of the slide groove, and the output shaft of the indexing motor drives the rotating slide rod to rotate through the indexing pulley pair. At this time, the sliding protrusion cooperates with the slide groove to drive the indexing rod to rotate synchronously. At this time, the slip ring rotates and slides in the ring groove, and the electric injection pump sucks out the reagent inside the reagent disk mechanism. After rotating to the corresponding position, the reagent is quantitatively dripped from the sample injection needle into the corresponding reaction cylinder on the reaction disk for pesticide residue detection. When not in use, the sample injection needle is inserted into the cleaning storage cylinder to avoid damage and contamination of the sample injection needle.
[0027] The reagent disk mechanism comprises a reagent disk rack, a second fixing frame is fixed to the side of the reagent disk rack, a second motor is fixed to the lower end of the second fixing frame, a reagent disk shaft is rotatably provided in the middle of the reagent disk rack, a second pulley pair is provided between the reagent disk shaft and the output shaft of the second motor, a tray, an upper reagent disk and a lower reagent disk are fixed to the upper end of the reagent disk shaft in sequence, a distance between the tray and the upper reagent disk is smaller than a distance between the upper reagent disk and the lower reagent disk, a storage cylinder is fixed to the upper end of the reagent disk rack, the tray, the upper reagent disk and the lower reagent disk are all located on the inner side of the storage cylinder, the tray, the upper reagent disk and the lower reagent disk are all equal-sized disks, two groups of several circumferentially evenly distributed tube-drag holes are provided on the tray, two groups of several circumferentially evenly distributed tube-placing holes are provided on the upper reagent disk and the lower reagent disk, a second counting disk is fixed to the lower end of the reagent disk shaft, a second counting sensor is fixed to the reagent disk rack, and an edge of the second counting disk passes through the second counting sensor.
[0028] With the above structure, the output shaft of the second motor drives the reagent disk shaft to rotate through the second pulley pair, and the reagent disk shaft drives the tray, the upper reagent disk, the lower reagent disk and the second counting disk to rotate synchronously. The second counting disk cooperates with the second counting sensor to control the power on and off of the second motor, so that the output shaft of the second motor rotates in a gap, thereby driving the tray, the upper reagent disk, the lower reagent disk and the second counting disk to rotate in a gap. The tray, the upper reagent disk and the lower reagent disk cooperate, that is, the tube dragging hole and the tube placement hole cooperate to place a number of test tubes, thereby driving the test tubes to rotate in a stable gap, which is convenient for extracting the reagents inside the test tubes through the lifting and filling mechanism to perform pesticide residue detection.
[0029] The sides of the square storage holes are respectively provided with corresponding counting numbers, the outer edge of the first counting disk is provided with a plurality of counting notches evenly distributed around the circumference, the second counting disk has the same structure as the first counting disk, the second counting sensor has the same structure as the first counting sensor, the number of the counting notches of the first counting disk is the same as the number of the square storage holes, and the number of the counting notches of the second counting disk is the same as the number of the drag tube holes.
[0030] With the above structure, the counting numbers are convenient for statistical detection results. The counting gaps cooperate with the counting sensors to control the on and off of the motor. The counting gaps of the first counting disk are the same as the number of square storage holes, and the counting gaps of the second counting disk are the same as the number of tube holes, which is convenient for control and statistical detection results.
[0031] Compared with the existing technology, this plant-derived food pesticide residue detection instrument has the following advantages:
[0032] The cleaning mechanism is lifted and matched with the waste liquid bucket and the clean water bucket to clean the plant-derived food and collect the cleaning liquid, and is matched with the reaction disk mechanism to detect the amount of pesticide residues adhered to the skin;
[0033] The crushing mechanism cooperates with the waste liquid barrel and the clean water barrel to crush the plant-derived food and recover the crushed slurry. At the same time, it cooperates with the reaction disk mechanism to detect the amount of pesticide residues accumulated inside.
[0034] Through the cooperation of the cleaning storage mechanism and the lifting and injecting mechanism, the inside and outside of the sample adding needle tube of the lifting and injecting mechanism can be cleaned, the injection is accurate, and the test results are guaranteed;
[0035] Through the cooperation of the reaction disk mechanism, the lifting and injection mechanism and the reagent disk mechanism, stable and efficient extraction of reagents can be achieved, and pesticide residue detection can be carried out quickly with accurate detection results. BRIEF DESCRIPTION OF THE DRAWINGS
[0036] Figure 1 It is a schematic diagram of the front three-dimensional structure of the present invention.
[0037] Figure 2 It is a schematic diagram of the rear three-dimensional structure of the present invention.
[0038] Figure 3 It is a schematic diagram of the front three-dimensional structure of the lifting and cleaning mechanism in the present invention.
[0039] Figure 4 It is a schematic diagram of the rear three-dimensional structure of the lifting and cleaning mechanism in the present invention.
[0040] Figure 5 It is a three-dimensional structural schematic diagram of the crushing mechanism in the present invention.
[0041] Figure 6 It is a three-dimensional structural schematic diagram of the reaction disk mechanism in the present invention.
[0042] Figure 7 It is a three-dimensional structural schematic diagram of the lifting and filling mechanism and the cleaning and storage mechanism in the present invention.
[0043] Figure 8 It is a three-dimensional structural schematic diagram of the reagent disk mechanism in the present invention.
[0044] In the figure, 1. lifting and cleaning mechanism; 2. waste liquid bucket; 3. clean water bucket; 4. reaction plate mechanism; 5. cleaning storage mechanism; 6. lifting and filling mechanism; 7. test tube box; 8. reagent plate mechanism; 9. main control computer; 10. crushing mechanism; 11. cleaning bracket; 12. cleaning motor; 13. double-axis output device; 14. transmission gear pair; 15. cleaning box; 16. lifting motor; 17. fixed pulley; 18. lifting hopper; 19 , material shifting plate; 20, sliding frame; 21, cleaning shaft; 22, rubber fixing plate; 23, cleaning cotton plate; 24, discharging hopper; 25, discharging flap; 26, crushing bracket; 27, electric heating rod; 28, insulation box; 29, crushing box; 30, fixing frame; 31, feeding port; 32, auxiliary cutter motor; 33, main cutter motor; 34, injection pipe; 35, main cutter shaft; 36, auxiliary cutter shaft; 37, discharge pipe; 38, The first motor; 39, the first pulley pair; 40, the first fixed frame; 41, the reaction disk rack; 42, the heating ring; 43, the reaction disk; 44, the liquid guide tube; 45, the support frame; 46, the fixed block; 47, the support rod; 48, the fixed plate; 49, the slide block; 50, the first transmission belt; 51, the first adjustment motor; 52, the injection rack; 53, the rotating slide rod; 54, the second adjustment motor; 55, the clamping rotating seat; 56, the second transmission belt; 57, the indexing motor; 58, the indexing pulley pair; 59, the indexing rod; 60, the mounting plate; 61, the sample injection needle; 62, the cleaning storage cylinder; 63, the fixed bracket; 64, the second motor; 65, the second pulley pair; 66, the second fixed frame; 67, the storage cylinder; 68, the tray; 69, the upper reagent disk; 70, the lower reagent disk; 71, the water pump; 72, the first counting sensor; 73, the first counting disk. DETAILED DESCRIPTION
[0045] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.
[0046] like Figure 1-Figure 8As shown, the pesticide residue detection instrument for plant-derived food includes a reaction disk mechanism 4, a cleaning and storage mechanism 5, a reagent disk mechanism 8, a test tube box 7 and a main control computer 9 which are arranged in sequence. A crushing mechanism 10 and a lifting and cleaning mechanism 1 are arranged in sequence on the rear side of the cleaning and storage mechanism 5. The lifting and cleaning mechanism 1 is located above the crushing mechanism 10. A waste liquid bucket 2 and a clean water bucket 3 are arranged on the side of the lifting and cleaning mechanism 1. A lifting and injection mechanism 6 is arranged on the front side of the cleaning and storage mechanism 5. Water pumps 71 are arranged below the crushing mechanism 10 and the lifting and cleaning mechanism 1. One of the water pumps 71 connects the crushing mechanism 10 and the lifting and cleaning mechanism 1 to the waste liquid bucket 2 respectively. One of the water pumps 71 connects the crushing mechanism 10 to the reaction disk mechanism 4 respectively. A liquid injection pump is arranged above the waste liquid bucket 2 and the clean water bucket 3. The liquid injection pump above the clean water bucket 3 is connected to the reaction disk mechanism 4, the crushing mechanism 10 and the lifting and cleaning mechanism 1 respectively.
[0047] The main control computer 9 controls the electrical components, places the test tubes in the test tube box 7 on the reagent tray mechanism 8, and injects various reagent solutions into the several reagent tubes on the reagent tray mechanism 8;
[0048] The plant-derived food to be tested (such as beans, vegetables, etc.) is placed inside the lifting and cleaning mechanism 1, and the injection pump injects the clean water in the clean water bucket 3 into the cleaning mechanism 1 for one cleaning. A portion of the primary cleaning liquid is taken out through one of the water pumps 71 and injected into the reaction disk mechanism 4. The lifting and injection mechanism 6 extracts various reagent liquids in several reagent tubes on the reagent disk mechanism 8 in turn and injects them into the reaction disk mechanism 4 to perform a cleaning liquid pesticide residue unit detection amount, which is recorded as A1. After the detection is completed, the injection pump above the clean water bucket 3 injects clean water into the reaction disk mechanism 4 for cleaning, and the rest of the primary cleaning liquid is all injected into the waste liquid bucket 2 through one of the water pumps 71;
[0049] The injection pump injects the clean water in the clean water bucket 3 into the cleaning mechanism 1 for primary cleaning, and takes part of the secondary cleaning liquid through one of the water pumps 71 and injects it into the reaction disk mechanism 4. The lifting and injection mechanism 6 extracts various reagent liquids in several reagent tubes on the reagent disk mechanism 8 in sequence and injects them into the reaction disk mechanism 4 to perform the secondary cleaning liquid pesticide residue unit detection amount, which is recorded as A2. After the detection is completed, the injection pump above the clean water bucket 3 injects clean water into the reaction disk mechanism 4 for cleaning;
[0050] The cleaning mechanism 1 is opened, and the remaining secondary cleaning liquid and plant-derived food fall into the pulverizing mechanism 10. The injection pump injects the clean water in the clean water bucket 3 into the pulverizing mechanism 10 to obtain a uniform pulverized slurry. A portion of the pulverized slurry is taken out through one of the water pumps 71 and injected into the reaction disk mechanism 4. The lifting and injection mechanism 6 extracts various reagent liquids in several reagent tubes on the reagent disk mechanism 8 in turn and injects them into the reaction disk mechanism 4 to perform a unit detection amount of pesticide residues in the pulverized slurry, which is recorded as A3. After the detection is completed, the injection pump above the clean water bucket 3 injects clean water into the reaction disk mechanism 4 for cleaning, and the remaining pulverized slurry is all injected into the waste liquid bucket 2 through one of the water pumps 71;
[0051] All detection information is transmitted to the main control computer 9 for analysis to obtain detection information of pesticide residues adhered to the outer skin and accumulated inside the plant-derived food. The amount of pesticide residues adhered to the outer skin is A1+A2, and the amount of pesticide residues accumulated inside is A3-A2.
[0052] The lifting and cleaning mechanism 1 includes a cleaning bracket 11, a cleaning motor 12, a dual-axis output device 13 and a cleaning box 15 are fixed on the upper end of the cleaning bracket 11, the cleaning box 15 is connected to the injection pump above the clean water bucket 3, a pulley transmission pair is provided between the output shaft of the cleaning motor 12 and the input shaft of the dual-axis output device 13, two cleaning shafts 21 are provided for rotation inside the cleaning box 15, and the two cleaning shafts 21 are respectively connected to the output shafts of the dual-axis output devices 13 at corresponding positions through a transmission gear pair 14, a plurality of rubber fixing plates 22 are fixed on the cleaning shafts 21, and cleaning cotton plates 23 are fixed at the ends of the rubber fixing plates 22, two liquid outlet pipes are provided on both sides of the bottom of the cleaning box 15, one of the liquid outlet pipes is connected to the waste liquid bucket 2 through a water pump 71, and the other liquid outlet pipe is connected to the reaction disk mechanism 4 through the water pump 71, and the cleaning box 15 is provided with a plurality of cleaning shafts 21. A discharge port is provided at the middle position of the bottom, a discharge flap 25 is hingedly provided at the bottom of the cleaning box 15, and the discharge flap 25 is located directly below the discharge port. A flip push rod is hingedly provided between the discharge flap 25 and the cleaning bracket 11, a discharge hopper 24 is fixed at the lower end of the cleaning bracket 11, and the discharge hopper 24 is located directly below the discharge port, a lifting motor 16 is fixed at the upper end of the cleaning box 15, a slide 20 is fixed to the side of the cleaning bracket 11, a fixed pulley 17 is provided at the upper end of the slide 20, a lifting hopper 18 is slidably provided on the slide 20, a pull rope is provided between the lifting hopper 18 and the output shaft of the lifting motor 16, the pull rope is engaged on the fixed pulley 17, a material diverting plate 19 is provided at the bottom of the lifting hopper 18, a material diverting motor is provided on the side of the lifting hopper 18, and the output shaft of the material diverting motor is transmission-connected to the rotating shaft of the material diverting plate 19, and a feeding port is provided at the upper end of the cleaning box 15.
[0053] The plant-derived food to be tested (such as beans, vegetables, etc.) is placed into the lifting hopper 18, the lifting motor 16 is started, the output shaft of the lifting motor 16 rotates, the draw rope is rolled up, the draw rope moves along the fixed pulley 17, and the lifting hopper 18 is pulled upward along the slide 20. When it moves to the top of the cleaning box 15, the output shaft of the material-dispensing motor drives the rotating shaft of the material-dispensing plate 19 to rotate, and the material-dispensing plate 19 is placed vertically. The plant-derived food in the lifting hopper 18 falls into the cleaning box 15 from the feeding port, and the injection pump above the clean water bucket 3 injects clean water into the cleaning box 15. The output shaft of the cleaning motor 12 drives the input shaft of the dual-axis output device 13 to rotate through the pulley transmission pair, and the dual-axis output The two output shafts of the discharge device 13 respectively drive the two cleaning shafts 21 at the corresponding positions to rotate, the cleaning shafts 21 drive the several rubber fixing plates 22 thereon to rotate, the rubber fixing plates 22 drive the cleaning cotton plates 23 to rotate, the cleaning cotton plates 23 clean the plant-derived food, and take part of the cleaning liquid through one of the water pumps 71 through one of the liquid outlet pipes, inject it into the reaction disk mechanism 4, and perform pesticide residue detection on the cleaning liquid. After the detection is completed, the remaining cleaning liquid is all injected into the waste liquid barrel 2 through another liquid outlet pipe through one of the water pumps 71 for collection and treatment; multiple cleanings can be performed as needed, and the cleaning liquid is tested for pesticide residues each time to obtain the detection information of pesticide residues adhered to the outer skin;
[0054] The flip push rod extends out, driving the discharging flap 25 to rotate, and the discharging flap 25 is placed vertically, and the cleaned plant-derived food and cleaning liquid fall out, fall into the discharging hopper 24 through the discharging port, and fall into the inside of the pulverizing mechanism 10.
[0055] The pulverizing mechanism 10 includes a pulverizing bracket 26, a heat preservation box 28 is fixed on the pulverizing bracket 26, a liquid injection pipe is provided at the lower end of the heat preservation box 28, a pulverizing box 29 is fixed inside the heat preservation box 28, a heat preservation chamber is formed between the heat preservation box 28 and the pulverizing box 29, an electric heating rod 27 and a temperature sensor are fixed on the heat preservation box 28, the electric heating rod 27 and the temperature sensor extend into the heat preservation chamber, a feed port 31 is provided on one side of the upper end of the pulverizing box 29, the feed port 31 is located directly below the discharge hopper 24, a plurality of injection pipes 34 are provided on the other side of the upper end of the pulverizing box 29, wherein the injection pipes 34 are connected to the injection pump above the clean water bucket 3, and the upper end of the pulverizing box 29 is fixed There is a fixed frame 30, on which an auxiliary cutter motor 32 and a main cutter motor 33 are fixed. The main cutter motor 33 is located in the middle of the fixed frame 30. The output shafts of the auxiliary cutter motor 32 and the main cutter motor 33 both extend into the interior of the crushing box 29. The end of the output shaft of the main cutter motor 33 is fixed with a main cutter shaft 35, and the end of the output shaft of the auxiliary cutter motor 32 is fixed with an auxiliary cutter shaft 36. A discharge pipe 37 is fixed at the lower end of the crushing box 29. The discharge pipe 37 extends through the insulation box 28. A multi-way electric control valve is provided at the lower end of the discharge pipe 37. The multi-way electric control valve is respectively connected to the waste liquid barrel 2 and the reaction disk mechanism 4 through a water pump 71.
[0056] The cleaned plant-derived food and the remaining secondary cleaning liquid fall into the interior of the crushing box 29 through the feed port 31, and the injection pump injects the clean water in the clean water bucket 3 into the interior of the crushing box 29 through the injection pipe 34. The output shaft of the main cutter motor 33 drives the main cutter shaft 35 to rotate, and the output shaft of the auxiliary cutter motor 32 drives the auxiliary cutter shaft 36 to rotate, so as to crush the plant-derived food. At the same time, it has a stirring function to make the crushing more uniform. The electric heating rod 27 heats the clean water inside the insulation chamber and heats the crushing box 29. The temperature sensor extends into the hot water inside the insulation chamber to monitor the temperature and control the crushing temperature to ensure the subsequent pesticide residue detection effect. The uniform crushed slurry enters the discharge pipe 37, and the multi-way electric control valve controls the liquid outlet. A part of the uniform crushed slurry is injected into the reaction disk mechanism 4 through the water pump 71 to perform the unit detection of pesticide residues in the crushed slurry, and the rest of the crushed slurry is all injected into the waste liquid barrel 2 through one of the water pumps 71.
[0057] The reaction disk mechanism 4 includes a reaction disk frame 41, a heating ring 42 is fixed to the upper end of the reaction disk frame 41, a first fixed frame 40 is fixed to the side of the reaction disk frame 41, a first motor 38 is fixed to the first fixed frame 40, a driving shaft is provided in the middle of the reaction disk frame 41, a first pulley pair 39 is provided between the output shaft of the first motor 38 and the driving shaft, a reaction disk 43 is fixed to the upper end of the driving shaft, the reaction disk 43 is located directly above the heating ring 42, a first counting disk 73 is fixed to the lower end of the driving shaft, a first counting sensor 72 is fixed to the reaction disk frame 41, an edge of the first counting disk 73 passes through the first counting sensor 72, a first adjusting motor 51 is fixed to the lower end of the reaction disk frame 41, and a fixing plate 4 is fixed to the side of the reaction disk frame 41 8. A first transmission belt 50 is rotatably provided on the fixed plate 48, one of the rotating shafts of the first transmission belt 50 is connected to the output shaft of the first regulating motor 51 by sensing, a slider 49 is slidably provided on the fixed plate 48, the slider 49 is fixedly connected to the first transmission belt 50, a support rod 47 is fixed to the upper end of the slider 49, a support frame 45 is fixed to the upper end of the support rod 47, a fixed block 46 is provided inside the support frame 45, a plurality of liquid guide tubes 44 are provided between the fixed block 46 and the support frame 45, the support frame 45 is located above the reaction disk 43, one of the liquid guide tubes 44 is connected to the injection pump above the clean water bucket 3, one of the liquid guide tubes 44 is connected to the multi-way electric control valve, and a plurality of square storage holes uniformly distributed around the circumference are opened on the reaction disk 43.
[0058] The output shaft of the first motor 38 drives the driving shaft to rotate through the first pulley pair 39, and the driving shaft drives the reaction disk 43 and the first counting disk 73 to rotate synchronously. The first counting disk 73 cooperates with the first counting sensor 72 to control the first motor 38 to be powered on and off, so that the output shaft of the first motor 38 rotates in a gap, thereby driving the reaction disk 43 to rotate in a gap. A plurality of reaction cylinders are placed on the reaction disk 43, and the heating ring 42 controls the temperature of the plurality of reaction cylinders. Before the rotation, the output shaft of the first regulating motor 51 drives one of the rotating shafts of the first transmission belt 50 to rotate, so that the first transmission belt 50 drives the slider 49 on the fixed plate 48. The fixing block 46 and the supporting frame 45 move upward, and the plurality of liquid guiding tubes 44 move upward. After the rotation, the output shaft of the adjusting motor 51 drives one of the rotating shafts of the first transmission belt 50 to rotate in the opposite direction. The first transmission belt 50 drives the slider 49 to slide downward on the fixing plate 48. The plurality of liquid guiding tubes 44 are inserted upward into the plurality of reaction cylinders. The first cleaning liquid, the second cleaning liquid, and the crushing slurry are respectively injected through the plurality of liquid guiding tubes 44 to perform pesticide residue detection. After the detection, the liquid injection pump above the clean water bucket 3 injects clean water into the reaction cylinder through the liquid guiding tube 44 to clean the reaction cylinder.
[0059] The cleaning storage mechanism 5 includes a material injection rack 52, which is C-shaped. A cleaning storage cylinder 62 is fixed to the upper end of the material injection rack 52. A three-way electric control valve is provided at the lower end of the cleaning storage cylinder 62. The other two ends of the three-way electric control valve are connected to the waste liquid bucket 2 and the clean water bucket 3 through control pumps respectively.
[0060] The control pump draws clean water from the clean water bucket 3 into the cleaning storage cylinder 62 through the three-way electric control valve, and cleans the sample adding needle 61 of the lifting injection mechanism 6 inside. The cleaning waste liquid is drawn into the waste liquid bucket 2 through the control pump for a reciprocating cycle.
[0061] The lifting injection mechanism 6 includes an injection frame 52, and a second adjusting motor 54 and an indexing motor 57 are fixed to the side of the injection frame 52. A second transmission belt 56 is rotatably provided between the output shaft of the second adjusting motor 54 and the injection frame 52. A rotating slide bar 53 is rotatably provided on the injection frame 52, and an indexing pulley pair 58 is provided between the rotating slide bar 53 and the output shaft of the indexing motor 57. An indexing rod 59 is slidably provided on the rotating slide bar 53, a slide groove is provided on the rotating slide bar 53, and a sliding protrusion is provided on the indexing rod 59, which is slidably arranged inside the slide groove. A clamping rotating seat 55 is fixed on the second transmission belt 56, and an annular groove is provided inside the clamping rotating seat 55. A slip ring is fixed to the lower end of the indexing rod 59, and the slip ring is slidably arranged inside the annular groove. A mounting plate 60 is fixed to the upper end of the indexing rod 59, and a sample injection syringe 61 is provided at the end of the mounting plate 60, and an electric injection pump is provided at the end of the sample injection syringe 61.
[0062] The output shaft of the second adjusting motor 54 drives the rotating shaft of the second transmission belt 56 to rotate, so that the second transmission belt 56 drives the clamping rotating seat 55 to rise and fall, and the slip ring cooperates with the ring groove to drive the indexing rod 59 to rise and fall. At this time, the sliding protrusion slides along the inside of the slide groove, and the output shaft of the indexing motor 57 drives the rotating slide rod 53 to rotate through the indexing pulley pair 58. At this time, the sliding protrusion cooperates with the slide groove to drive the indexing rod 59 to rotate synchronously. At this time, the slip ring rotates and slides in the ring groove, and the electric injection pump sucks out the reagent inside the reagent disk mechanism 8. After rotating to the corresponding position, the reagent is quantitatively dripped from the sample injection needle 61 to the corresponding reaction cylinder on the reaction disk 43 for pesticide residue detection. When not in use, the sample injection needle 61 is inserted into and placed inside the cleaning storage cylinder 62 to avoid damage and contamination of the sample injection needle 61.
[0063] The reagent disk mechanism 8 includes a reagent disk rack, a second fixed frame 66 is fixed to the side of the reagent disk rack, a second motor 64 is fixed to the lower end of the second fixed frame 66, a reagent disk shaft is rotatably provided in the middle of the reagent disk rack, a second pulley pair 65 is provided between the reagent disk shaft and the output shaft of the second motor 64, a tray 68, an upper reagent disk 69 and a lower reagent disk 70 are fixed to the upper end of the reagent disk shaft in sequence, the distance between the tray 68 and the upper reagent disk 69 is smaller than the distance between the upper reagent disk 69 and the lower reagent disk 70, and the upper end of the reagent disk rack is fixed to the upper reagent disk 69. A storage tube 67 is fixed at the end, and a tray 68, an upper reagent disk 69 and a lower reagent disk 70 are all located on the inner side of the storage tube 67. The tray 68, the upper reagent disk 69 and the lower reagent disk 70 are all equal-sized disks. Two groups of tube-drag holes uniformly distributed around the circumference are provided on the tray 68, and two groups of tube-placing holes uniformly distributed around the circumference are provided on the upper reagent disk 69 and the lower reagent disk 70. A second counting disk is fixed at the lower end of the reagent disk shaft, and a second counting sensor is fixed on the reagent disk rack, and the edge of the second counting disk passes through the second counting sensor.
[0064] The output shaft of the second motor 64 drives the reagent disk shaft to rotate through the second pulley pair 65, and the reagent disk shaft drives the tray 68, the upper reagent disk 69, the lower reagent disk 70 and the second counting disk to rotate synchronously. The second counting disk cooperates with the second counting sensor to control the power on and off of the second motor 64, so that the output shaft of the second motor 64 rotates in a gap, thereby driving the tray 68, the upper reagent disk 69, the lower reagent disk 70 and the second counting disk to rotate in a gap. The tray 68, the upper reagent disk 69 and the lower reagent disk 70 cooperate, that is, the tube dragging hole and the tube placement hole cooperate to place a number of test tubes, thereby driving the test tubes to rotate in a stable gap, which is convenient for extracting the reagent inside the test tube through the lifting and filling mechanism 6 to perform pesticide residue detection.
[0065] The sides of the square storage holes are respectively provided with corresponding counting numbers, the outer edge of the first counting disk 73 is provided with a plurality of counting notches evenly distributed around the circumference, the second counting disk has the same structure as the first counting disk 73, the second counting sensor has the same structure as the first counting sensor 72, the number of counting notches of the first counting disk 73 is the same as the number of the square storage holes, and the number of counting notches of the second counting disk is the same as the number of the tube holes.
[0066] The counting numbers are convenient for statistical detection results. The counting gaps cooperate with the counting sensors to control the on and off of the motor. The counting gaps of the first counting disk 73 are the same as the number of square storage holes, and the counting gaps of the second counting disk are the same as the number of tube holes, which is convenient for control and statistical detection results.
[0067] The reagent used in the present invention is a detection reagent used in liquid chromatography detection of pesticide residues.
[0068] Working principle of the present invention:
[0069] The main control computer 9 controls various electrical components, takes out several test tubes from the test tube box 7, and injects various test reagents used for liquid chromatography into several reagent tubes through the tube-drawing hole and the tube-placement hole. The output shaft of the second motor 64 drives the reagent disk shaft to rotate through the second pulley pair 65, and the reagent disk shaft drives the tray 68, the upper reagent disk 69, the lower reagent disk 70 and the second counting disk to rotate synchronously. The second counting disk cooperates with the second counting sensor to control the power on and off of the second motor 64, so that the output shaft gap of the second motor 64 rotates, thereby driving the tray 68, the upper reagent disk 69, the lower reagent disk 70 and the second counting disk gap to rotate, so as to facilitate liquid collection;
[0070] The plant-derived food to be tested (such as beans, vegetables, etc.) is placed in the lifting hopper 18, the lifting motor 16 is started, the output shaft of the lifting motor 16 rotates, the draw rope is rolled up, the draw rope moves along the fixed pulley 17, and the lifting hopper 18 is pulled upward along the slide 20. When it moves to the top of the cleaning box 15, the output shaft of the material-dispensing motor drives the rotating shaft of the material-dispensing plate 19 to rotate, and the material-dispensing plate 19 is placed vertically. The plant-derived food in the lifting hopper 18 falls into the cleaning box 15 from the feeding port, and the injection pump above the clean water bucket 3 injects clean water into the cleaning box 15. The output shaft of the cleaning motor 12 is driven by a pulley. The auxiliary device drives the input shaft of the dual-axis output device 13 to rotate, and the two output shafts of the dual-axis output device 13 respectively drive the two cleaning shafts 21 at the corresponding positions to rotate, and the cleaning shaft 21 drives the plurality of rubber fixing plates 22 thereon to rotate, and the rubber fixing plates 22 drive the cleaning cotton plates 23 to rotate, and the cleaning cotton plates 23 clean the plant-derived food, and take part of the cleaning liquid through one of the water pumps 71 through one of the liquid outlet pipes, and inject it into the reaction disk mechanism 4 to perform pesticide residue detection on the cleaning liquid. After the detection is completed, the remaining cleaning liquid is all injected into the waste liquid barrel 2 through one of the water pumps 71 through another liquid outlet pipe for collection and treatment;
[0071] Multiple cleanings can be performed as needed, and the cleaning liquid is tested for pesticide residues each time to obtain the detection information of pesticide residues adhering to the outer skin. The unit detection amount of pesticide residues in the cleaning liquid is performed once, recorded as A1, and the unit detection amount of pesticide residues in the cleaning liquid is performed twice, recorded as A2. Generally, two cleaning liquid tests are performed, and the amount of pesticide residues adhering to the outer skin is obtained as A1+A2;
[0072] After cleaning is completed, the flip push rod extends out, driving the discharging flap 25 to rotate, and the discharging flap 25 is placed vertically, and the cleaned plant-derived food and cleaning liquid fall out and fall into the discharging hopper 24 through the discharging port. The cleaned plant-derived food and the remaining secondary cleaning liquid fall into the inside of the crushing box 29 through the feeding port 31, and the injection pump injects the clean water in the clean water bucket 3 into the inside of the crushing box 29 through the injection pipe 34. The output shaft of the main cutter motor 33 drives the main cutter shaft 35 to rotate, and the output shaft of the auxiliary cutter motor 32 drives the auxiliary cutter shaft 36 to rotate, so as to crush the plant-derived food and have a stirring function at the same time. To make the pulverization more uniform, the electric heating rod 27 heats the clean water inside the heat preservation chamber and heats the pulverization box 29. The temperature sensor extends into the hot water inside the heat preservation chamber to monitor the temperature and control the pulverization temperature to ensure the subsequent pesticide residue detection effect. The uniformly pulverized slurry enters the discharge pipe 37, and the multi-way electric control valve controls the outlet of the liquid. A part of the uniformly pulverized slurry is injected into the reaction disk mechanism 4 through the water pump 71, and the unit detection amount of pesticide residues in the pulverized slurry is recorded as A3. The amount of pesticide residues accumulated inside is A3-A2. The rest of the pulverized slurry is all injected into the waste liquid barrel 2 through one of the water pumps 71;
[0073] The reaction disk mechanism 4 is tested as follows:
[0074] The output shaft of the second adjustment motor 54 drives the rotating shaft of the second transmission belt 56 to rotate, so that the second transmission belt 56 drives the clamping rotating seat 55 to rise and fall, and the slip ring cooperates with the ring groove to drive the indexing rod 59 to rise and fall. At this time, the sliding protrusion slides along the inside of the slide groove, and the output shaft of the indexing motor 57 drives the rotating slide rod 53 to rotate through the indexing pulley pair 58. At this time, the sliding protrusion cooperates with the slide groove to drive the indexing rod 59 to rotate synchronously. At this time, the slip ring rotates and slides in the ring groove, and the electric injection pump sucks out the reagent inside the reagent disk mechanism 8. After rotating to the corresponding position, the reagent is quantitatively dripped from the sample injection needle 61 to the corresponding reaction cylinder on the reaction disk 43;
[0075] The output shaft of the first motor 38 drives the driving shaft to rotate through the first pulley pair 39, and the driving shaft drives the reaction disk 43 and the first counting disk 73 to rotate synchronously. The first counting disk 73 cooperates with the first counting sensor 72 to control the first motor 38 to be powered on and off, so that the output shaft of the first motor 38 rotates in a gap, thereby driving the reaction disk 43 to rotate in a gap. A plurality of reaction cylinders are placed on the reaction disk 43, and the heating ring 42 controls the temperature of the plurality of reaction cylinders. Before the rotation, the output shaft of the first regulating motor 51 drives one of the rotating shafts of the first transmission belt 50 to rotate, so that the first transmission belt 50 0 drives the slider 49 to slide upward on the fixed plate 48, drives the support rod 47 to slide upward, at this time the fixed block 46 and the support frame 45 move upward, drives the plurality of liquid guide tubes 44 to move upward, after rotation, the output shaft of the adjustment motor 51 drives one of the rotating shafts of the first transmission belt 50 to rotate in the opposite direction, the first transmission belt 50 drives the slider 49 to slide downward on the fixed plate 48, the plurality of liquid guide tubes 44 are inserted upward into the plurality of reaction cylinders, and the first cleaning liquid, the second cleaning liquid and the crushing slurry are respectively injected through the plurality of liquid guide tubes 44 to perform pesticide residue detection, and the detection method is liquid chromatography detection.
[0076] After the detection is completed, the injection pump above the clean water bucket 3 injects clean water into the reaction cylinder of the reaction disk mechanism 4 to clean the reaction cylinder;
[0077] All detection information is transmitted to the main control computer 9 for analysis, and the detection information of the pesticide residues adhering to the outer skin and accumulated inside the plant-derived food is obtained.
[0078] In summary, by lifting the cleaning mechanism 1 and cooperating with the waste liquid bucket 2 and the clean water bucket 3 respectively, the plant-derived food can be cleaned and the cleaning liquid can be collected, and the reaction disk mechanism 4 can be used to detect the amount of pesticide residues adhered to the skin;
[0079] The crushing mechanism 10 cooperates with the waste liquid bucket 2 and the clean water bucket 3 to crush the plant-derived food and recover the crushed slurry, and cooperates with the reaction disk mechanism 4 to detect the amount of pesticide residues accumulated inside;
[0080] Through the cooperation between the cleaning storage mechanism 5 and the lifting injection mechanism 6, the inside and outside of the sample injection needle 61 of the lifting injection mechanism 6 are cleaned, the injection is accurate, and the test results are guaranteed;
[0081] Through the cooperation of the reaction disk mechanism 4, the lifting and injection mechanism 6 and the reagent disk mechanism 8, stable and efficient extraction of reagents is achieved, and pesticide residue detection is carried out quickly with accurate detection effect.
[0082] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.
Claims
1. A pesticide residue detection instrument for plant-derived food, comprising a reaction disk mechanism (4), a cleaning and storage mechanism (5), a reagent disk mechanism (8), a test tube box (7) and a main control computer (9) arranged in sequence, characterized in that: The rear side of the cleaning and storage mechanism (5) is provided with a crushing mechanism (10) and a lifting and cleaning mechanism (1) in sequence. The lifting and cleaning mechanism (1) is located above the crushing mechanism (10). A waste liquid bucket (2) and a clean water bucket (3) are provided on the side of the lifting and cleaning mechanism (1). A lifting and injecting mechanism (6) is provided on the front side of the cleaning and storage mechanism (5). Water pumps (71) are provided below the crushing mechanism (10) and the lifting and cleaning mechanism (1). One of the water pumps (71) connects the crushing mechanism (10) and the lifting and cleaning mechanism (1) to the waste liquid bucket (2), and one of the water pumps (71) connects the crushing mechanism (10) to the reaction disk mechanism (4). Liquid injection pumps are provided above the waste liquid bucket (2) and the clean water bucket (3). The liquid injection pump above the clean water bucket (3) is connected to the reaction disk mechanism (4), the crushing mechanism (10) and the lifting and cleaning mechanism (1).
2. The pesticide residue detection instrument for plant-derived food according to claim 1, characterized in that: The lifting and cleaning mechanism (1) comprises a cleaning bracket (11), a cleaning motor (12), a double-shaft output device (13) and a cleaning box (15) are fixed on the upper end of the cleaning bracket (11), the cleaning box (15) is connected to the injection pump above the clean water bucket (3), a pulley transmission pair is provided between the output shaft of the cleaning motor (12) and the input shaft of the double-shaft output device (13), and two cleaning rotating shafts (21) are rotatably provided inside the cleaning box (15), and the two cleaning rotating shafts (21) are respectively connected to the corresponding The output shafts of the dual-axis output devices (13) at the positions are connected by transmission gear pairs (14), a plurality of rubber fixing plates (22) are fixed on the cleaning shaft (21), and cleaning cotton plates (23) are fixed at the ends of the rubber fixing plates (22). Two liquid outlet pipes are provided on both sides of the bottom of the cleaning box (15), one of which is connected to the waste liquid bucket (2) through a water pump (71), and the other is connected to the reaction disk mechanism (4) through a water pump (71). The cleaning box (15) ) is provided with a discharge port at the middle position of the bottom, a discharge flap (25) is hingedly connected to the bottom of the cleaning box (15), the discharge flap (25) is located directly below the discharge port, a flip push rod is hingedly connected between the discharge flap (25) and the cleaning bracket (11), a discharge hopper (24) is fixed to the lower end of the cleaning bracket (11), the discharge hopper (24) is located directly below the discharge port, a lifting motor (16) is fixed to the upper end of the cleaning box (15), and a slide (20) is fixed to the side of the cleaning bracket (11) A fixed pulley (17) is provided at the upper end of the slide (20), a lifting hopper (18) is slidably provided on the slide (20), a pull rope is provided between the lifting hopper (18) and the output shaft of the lifting motor (16), the pull rope is engaged with the fixed pulley (17), a material shifting plate (19) is provided at the bottom of the lifting hopper (18), a material shifting motor is provided at the side of the lifting hopper (18), the output shaft of the material shifting motor is transmission-connected to the rotating shaft of the material shifting plate (19), and a feeding port is provided at the upper end of the cleaning box (15).
3. The pesticide residue detection instrument for plant-derived food according to claim 2, characterized in that: The pulverizing mechanism (10) comprises a pulverizing bracket (26), a heat preservation box (28) is fixed on the pulverizing bracket (26), a liquid injection pipe is arranged at the lower end of the heat preservation box (28), a pulverizing box (29) is fixed inside the heat preservation box (28), a heat preservation chamber is formed between the heat preservation box (28) and the pulverizing box (29), an electric heating rod (27) and a temperature sensor are fixed on the heat preservation box (28), the electric heating rod (27) and the temperature sensor extend into the heat preservation chamber, a feed port (31) is provided on one side of the upper end of the pulverizing box (29), the feed port (31) is located directly below the discharge hopper (24), a plurality of injection pipes (34) are arranged on the other side of the upper end of the pulverizing box (29), wherein the injection pipes (34) are connected to the liquid injection pump above the clean water bucket (3), and a pulverizing box (29) is fixed on the upper end of the pulverizing box (29). A fixed frame (30) is provided, on which an auxiliary cutter motor (32) and a main cutter motor (33) are fixed, the main cutter motor (33) is located in the middle of the fixed frame (30), the output shafts of the auxiliary cutter motor (32) and the main cutter motor (33) are both extended into the interior of the crushing box (29), the end of the output shaft of the main cutter motor (33) is fixed with a main cutter shaft (35), the end of the output shaft of the auxiliary cutter motor (32) is fixed with an auxiliary cutter shaft (36), a discharge pipe (37) is fixed at the lower end of the crushing box (29), the discharge pipe (37) penetrates and extends out of the heat preservation box (28), and a multi-way electric control valve is provided at the lower end of the discharge pipe (37), and the multi-way electric control valve is respectively connected to the waste liquid bucket (2) and the reaction disk mechanism (4) through a water pump (71).
4. The pesticide residue detection instrument for plant-derived food according to claim 3, characterized in that: The reaction disk mechanism (4) comprises a reaction disk frame (41), a heating ring (42) is fixed to the upper end of the reaction disk frame (41), a first fixing frame (40) is fixed to the side of the reaction disk frame (41), a first motor (38) is fixed to the first fixing frame (40), a driving shaft is provided in the middle of the reaction disk frame (41), a first pulley pair (39) is provided between the output shaft of the first motor (38) and the driving shaft, a reaction disk (43) is fixed to the upper end of the driving shaft, the reaction disk (43) is located directly above the heating ring (42), a first counting disk (73) is fixed to the lower end of the driving shaft, a first counting sensor (72) is fixed to the reaction disk frame (41), an edge of the first counting disk (73) passes through the first counting sensor (72), a first adjusting motor (51) is fixed to the lower end of the reaction disk frame (41), a fixing plate (45) is fixed to the side of the reaction disk frame (41), and a first adjusting motor (51) is fixed to the lower end of the reaction disk frame (41). 8), a first transmission belt (50) is rotatably provided on the fixed plate (48), one of the rotating shafts of the first transmission belt (50) is connected to the output shaft of the first regulating motor (51) by sensing, a slider (49) is slidably provided on the fixed plate (48), the slider (49) is fixedly connected to the first transmission belt (50), a support rod (47) is fixed to the upper end of the slider (49), a support frame (45) is fixed to the upper end of the support rod (47), a fixed block (46) is provided inside the support frame (45), a plurality of liquid guide tubes (44) are provided between the fixed block (46) and the support frame (45), the support frame (45) is located above the reaction disk (43), one of the liquid guide tubes (44) is connected to the injection pump above the clean water bucket (3), one of the liquid guide tubes (44) is connected to the multi-way electric control valve, and a plurality of square placement holes evenly distributed around the circumference are opened on the reaction disk (43).
5. The pesticide residue detection instrument for plant-derived food according to claim 1 or 4, characterized in that: The cleaning storage mechanism (5) comprises a material injection rack (52) which is C-shaped. A cleaning storage cylinder (62) is fixed to the upper end of the material injection rack (52). A three-way electric control valve is provided at the lower end of the cleaning storage cylinder (62). The other two ends of the three-way electric control valve are connected to the waste liquid bucket (2) and the clean water bucket (3) respectively through a control pump.
6. The pesticide residue detection instrument for plant-derived food according to claim 5, characterized in that: The lifting injection mechanism (6) comprises an injection frame (52), a second adjusting motor (54) and an indexing motor (57) are fixed to the side of the injection frame (52), a second transmission belt (56) is rotatably provided between the output shaft of the second adjusting motor (54) and the injection frame (52), a rotating slide bar (53) is rotatably provided on the injection frame (52), an indexing pulley pair (58) is provided between the rotating slide bar (53) and the output shaft of the indexing motor (57), an indexing rod (59) is slidably provided on the rotating slide bar (53), and the rotating A sliding groove is provided on the movable slide rod (53), a sliding protrusion is provided on the transfer rod (59), and the sliding protrusion is slidably arranged inside the sliding groove. A clamping rotating seat (55) is fixed on the second transmission belt (56), and an annular groove is provided inside the clamping rotating seat (55). A slip ring is fixed at the lower end of the transfer rod (59), and the slip ring is slidably arranged inside the annular groove. A mounting plate (60) is fixed at the upper end of the transfer rod (59), and a sample injection needle tube (61) is provided at the end of the mounting plate (60), and an electric injection pump is provided at the end of the sample injection needle tube (61).
7. The pesticide residue detection instrument for plant-derived food according to claim 6, characterized in that: The reagent disk mechanism (8) comprises a reagent disk rack, a second fixing frame (66) is fixed to the side of the reagent disk rack, a second motor (64) is fixed to the lower end of the second fixing frame (66), a reagent disk shaft is rotatably provided in the middle of the reagent disk rack, a second pulley pair (65) is provided between the reagent disk shaft and the output shaft of the second motor (64), a tray (68), an upper reagent disk (69) and a lower reagent disk (70) are fixed to the upper end of the reagent disk shaft in sequence, the distance between the tray (68) and the upper reagent disk (69) is smaller than the distance between the upper reagent disk (69) and the lower reagent disk (70), and the reagent disk A storage cylinder (67) is fixed at the upper end of the rack, and a tray (68), an upper reagent disk (69) and a lower reagent disk (70) are all located inside the storage cylinder (67). The tray (68), the upper reagent disk (69) and the lower reagent disk (70) are all equal-sized circular disks. Two groups of tube-drawing holes evenly distributed on the circumference of the tray (68) are provided, and two groups of tube-placing holes evenly distributed on the upper reagent disk (69) and the lower reagent disk (70) are provided. A second counting disk is fixed at the lower end of the reagent disk shaft, and a second counting sensor is fixed on the reagent disk rack, and the edge of the second counting disk passes through the second counting sensor.
8. The pesticide residue detection instrument for plant-derived food according to claim 7, characterized in that: The sides of the square storage holes are respectively provided with corresponding counting numbers, the outer edge of the first counting disk (73) is provided with a plurality of counting notches evenly distributed around the circumference, the second counting disk has the same structure as the first counting disk (73), the second counting sensor has the same structure as the first counting sensor (72), the number of the counting notches of the first counting disk (73) is the same as the number of the square storage holes, and the number of the counting notches of the second counting disk is the same as the number of the tube holes.