Rapid detection device for pesticide residues in agricultural products

Abstract

The utility model relates to the technical field of agricultural product detection, in particular to a rapid detection device for pesticide residues in agricultural products, which can rapidly prepare a reagent solution for sample detection, cancel the process step of a test tube, shorten time consumption, realize rapid detection and improve working efficiency. Comprising a machine body, a controller and a detector, the sample container is detachably installed in the machine body, the inner tube is installed in the sample container in a lifting and sliding mode, the push rod is installed in the inner tube in a sliding mode, a second piston is arranged at the lower end of the push rod, the reagent conveying unit is installed on the machine body, and sampling reagents are stored in the reagent conveying unit; the reagent conveying unit is used for inputting a sampling reagent into the sample container, the solution support is placed on the machine body, the machine body is provided with an overflow channel, the overflow channel is connected with the mounting groove and the solution support, and the solution support and the detector are matched to detect pesticide residues in a sample solution.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of agricultural product detection, especially to a kind of rapid detection device of pesticide residue in agricultural product. BACKGROUND

[0002] To ensure the safety of agricultural products for eating, pesticide residue detection needs to be carried out, and the prior art discloses a device for detecting pesticide residues in agricultural products, which comprises a pesticide residue detector and a dustproof assembly, a display screen is arranged on the right side top of the pesticide residue detector, a printing mechanism is arranged above the display screen, a sample plate is arranged below the left side of the pesticide residue detector, a test tube detection port is longitudinally arranged in the inside of the sample plate, the dustproof assembly is installed in the inside of the test tube detection port to prevent the test tube detection port from being contaminated by dust, the dustproof assembly comprises a telescopic groove, a damping spring, a push plate, a mounting block and a baffle, the damping spring is horizontally installed in the inside of the telescopic groove, and the right end of the damping spring is fixedly provided with the push plate. The device for detecting pesticide residues in agricultural products is set by the mutual cooperation of multiple components, which can not only prevent dust from entering the inside of the test tube detection port, but also clean the outer wall of the test tube, and the sample plate can be quickly taken out for easy fault maintenance in the later stage.

[0003] However, the above-mentioned detection device cannot quickly prepare the detection solution for detecting pesticide residues in agricultural products, and the agricultural product sample and the reagent need to be mixed to obtain the solution for detection, and the solution needs to be injected into the test tube for detection, which takes a long time and is not conducive to rapid detection. UTILITY MODEL CONTENT

[0004] To solve the above technical problems, the utility model provides a rapid detection device for pesticide residues in agricultural products, which can quickly prepare a reagent solution for sample detection, cancel the process step of test tube, shorten the time consumption, realize rapid detection and improve the work efficiency.

[0005] The utility model discloses a kind of pesticide residues in agricultural product rapid detection device, including body, controller and detector, controller and detector are installed on body;Still including sample container, inner tube, push rod, reagent delivery unit and solution support, installation groove is provided on body, sample container is detachably installed in the installation groove of body, inner tube is slidably installed in sample container, gap is provided between the outer wall of inner tube and the inner wall of sample container, piston is provided at the bottom of inner tube, piston and the inner wall of sample container are in sliding contact, the bottom of sample container and the bottom of piston are provided with filter hole, push rod is slidably installed in inner tube, piston two is provided at the lower end of push rod, piston two and the inner wall of inner tube are in sliding contact, the upper end of push rod protrudes above inner tube, reagent delivery unit is installed on body, sampling reagent is stored in reagent delivery unit, and reagent delivery unit is used to input sampling reagent into sample container, solution support is placed on body, overflow channel is provided on body, overflow channel is connected with installation groove and solution support, and solution support and detector cooperate to detect pesticide residues in sample solution;When working, agricultural product samples such as vegetable leaf fragments are put into sample container, inner tube is pressed into sample container, sampling reagent is input into the gap between sample container and inner tube by reagent delivery unit, sampling reagent is acetonitrile, methanol, ethanol or acetone etc., sampling reagent is mixed with agricultural product sample by filter hole on the piston of inner tube, inner tube is pressed and rotated, so that inner tube and the bottom of sample container cooperate to crush agricultural product sample, so that pesticide residues on agricultural product sample are dissolved in sampling reagent to form sample solution, push rod is pushed down, so that piston two of push rod is lowered to squeeze sample solution in inner tube into the gap between inner tube and sample container through filter hole at the bottom of piston two, sample solution flows into solution support through overflow channel of body after rising, complete rapid sampling, and detector detects the spectrum of sample solution in solution support to detect pesticide residues, compared with prior art, reagent solution for sample detection can be prepared quickly, and the process step of test tube is cancelled, time consumption is shortened, rapid detection is realized, and work efficiency is improved.

[0006] Preferably, it further includes adjusting knob and switch assembly, reagent delivery unit is provided with delivery pump, adjusting knob is installed on reagent delivery unit, adjusting knob is used to adjust the volume of sampling reagent delivered by delivery pump once, and switch assembly is installed on adjusting knob;Delivery pump of reagent delivery unit can be peristaltic pump, by setting adjusting knob, quantitative delivery of sampling reagent is conveniently realized, peristaltic pump is opened and closed by pressing switch assembly, and the practicability is good.

[0007] Preferably, the liquid inlet groove and the liquid outlet groove are arranged on the upper end surface of the sample container, the liquid inlet groove is matched with the output pipe of the reagent conveying unit, the liquid outlet groove is matched and aligned with the overflow channel of the machine body, and the liquid outlet groove is located below the liquid inlet groove; the liquid inlet groove facilitates the conveying of the sampling reagent from the reagent conveying unit to the gap between the sample container and the inner tube, and the liquid outlet groove facilitates the conveying of the sample solution to the overflow channel of the machine body and the solution holder; the liquid outlet groove is located below the liquid inlet groove, so that the sample solution is prevented from overflowing to the reagent conveying unit through the liquid inlet groove, and the practicability is improved.

[0008] Preferably, a plurality of crushing knives are arranged on the lower end surface of the inner tube; the plurality of crushing knives improve the crushing effect of the agricultural product sample.

[0009] Preferably, a dust cover and a spring are arranged, the dust cover is slidably sleeved on the upper portion of the inner tube, the dust cover is used for sealing the upper port of the sample container, the lower end of the spring is connected with the dust cover, and the upper end of the spring is connected with the inner tube; the dust cover is elastically connected to the upper portion of the inner tube through the spring, the gap between the sample container and the inner tube is sealed by the dust cover when the inner tube crushes the agricultural product sample, dust is prevented from entering, and the quality of the sample solution is improved.

[0010] Preferably, a push cylinder, a cross beam, a motor, a driving sleeve, a driven wheel and a transmission belt are arranged, the fixed end of the push cylinder is arranged on the machine body, the cross beam is horizontally arranged on the piston rod of the push cylinder, the motor is arranged on the cross beam, the output shaft of the motor is concentrically arranged with a driving wheel, the driving sleeve is rotatably arranged on the cross beam, the upper end of the driving sleeve is concentrically arranged with a driven wheel, the transmission belt is sleeved on the driving wheel and the driven wheel of the motor, and the lower end of the driving sleeve is in transmission connection with the upper end of the inner tube; the transmission connection mode of the driving sleeve and the inner tube can be toothed connection, threaded connection, etc.; after the agricultural product sample is put into the sample container, the piston rod of the push cylinder is retracted to drive the cross beam to descend, so that the inner tube is lowered to press the agricultural product sample into the bottom of the sample container; the motor drives the driving wheel to rotate, the driving wheel drives the driven wheel to rotate through the transmission belt, the driven wheel drives the driving sleeve and the inner tube to rotate, the inner tube automatically crushes and grinds the agricultural product sample, and the working efficiency is improved.

[0011] Preferably, a light source is arranged, a liquid inlet hole matched and aligned with the overflow channel of the machine body is arranged on the side wall of the solution holder, a detection groove for storing the sample solution is arranged on the solution holder, the liquid inlet hole is in communication with the detection groove, and the light source is arranged at the bottom of the detection groove of the solution holder; the light source is turned on to illuminate the sample solution in the detection groove of the solution holder for light supplement, and the accuracy of the detection instrument in detecting the sample solution is improved.

[0012] Compared with the prior art, the reagent solution for sample detection can be quickly prepared, the process step of the test tube is cancelled, the time consumption is shortened, the rapid detection is realized, and the working efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a structural schematic view of the utility model;

[0014] Figure 2 is a front view of the utility model;

[0015] Figure 3 is a perspective view of the utility model;

[0016] Figure 4 is a structural schematic view of the machine body, controller and reagent delivery unit etc. structure;

[0017] Figure 5 is a structural schematic view of the sample container, inner tube, push rod, motor, drive sleeve, driven wheel and transmission belt etc. structure;

[0018] Figure 6 is a structural schematic view of the inner tube, dust cover and spring etc. structure;

[0019] Figure 7 is a structural schematic view of the detector and solution holder etc. structure.

[0020] Markings in the drawing: 1, machine body; 2, controller; 3, detector; 4, sample container; 5, inner tube; 6, push rod; 7, reagent delivery unit; 8, solution holder; 9, adjusting knob; 10, switch assembly; 11, liquid inlet groove; 12, liquid outlet groove; 13, crushing knife; 14, dust cover; 15, spring; 16, push cylinder; 17, crossbeam; 18, motor; 19, drive sleeve; 20, driven wheel; 21, transmission belt; 22, light source. DETAILED DESCRIPTION

[0021] In order to facilitate understanding of the utility model, the utility model will be described more fully below with reference to the relevant drawings. The utility model can be realized 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 utility model more thorough and comprehensive. Example 1

[0022] As Figures 1 to 4 , Figure 6 and Figure 7As shown, a kind of pesticide residue in agricultural product rapid detection device, including machine body 1, controller 2 and detector 3, controller 2 and detector 3 are installed on machine body 1;It also includes sample container 4, inner tube 5, push rod 6, reagent delivery unit 7 and solution support 8, installation groove is provided on machine body 1, sample container 4 can be detachably installed in the installation groove of machine body 1, inner tube 5 is installed in sample container 4 and is lifted and slides, gap is provided between the outer wall of inner tube 5 and the inner wall of sample container 4, the bottom of inner tube 5 is provided with piston, piston and the inner wall of sample container 4 are in sliding contact, the bottom of sample container 4 and the bottom of piston are provided with filter hole, push rod 6 is slidably installed in inner tube 5, the lower end of push rod 6 is provided with piston two, piston two and the inner wall of inner tube 5 are in sliding contact, the upper end of push rod 6 extends above inner tube 5, reagent delivery unit 7 is installed on machine body 1, sampling reagent is stored in reagent delivery unit 7, and reagent delivery unit 7 is used to input sampling reagent into sample container 4, solution support 8 is placed on machine body 1, overflow channel is provided on machine body 1, overflow channel is connected with installation groove and solution support 8, and solution support 8 and detector 3 cooperate to detect pesticide residue in sample solution;It also includes adjusting knob 9 and switch assembly 10, delivery pump is provided on reagent delivery unit 7, adjusting knob 9 is installed on reagent delivery unit 7, adjusting knob 9 is used to adjust the volume of sampling reagent delivered by delivery pump once, and switch assembly 10 is installed on adjusting knob 9;It also includes liquid inlet groove 11 and liquid outlet groove 12, liquid inlet groove 11 and liquid outlet groove 12 are provided on the upper end surface of sample container 4, liquid inlet groove 11 is matched with the output pipe of reagent delivery unit 7, liquid outlet groove 12 is matched with the overflow channel of machine body 1 and is aligned, and liquid outlet groove 12 is below liquid inlet groove 11;It also includes a plurality of crushing knives 13, a plurality of crushing knives 13 are installed on the lower end surface of inner tube 5;It also includes light source 22, liquid inlet hole is provided on the side wall of solution support 8 and is matched with the overflow channel of machine body 1 and is aligned, detection groove for storing sample solution is provided on solution support 8, liquid inlet hole is communicated with detection groove, and light source 22 is installed at the bottom of detection groove of solution support 8.

[0023] In operation, the agricultural product sample such as vegetable leaf fragments is put into the sample container 4, the inner tube 5 is pressed into the sample container 4, the sampling reagent such as acetonitrile, methanol, ethanol or acetone is input into the gap between the sample container 4 and the inner tube 5 through the reagent delivery unit 7, the sampling reagent is mixed with the agricultural product sample through the filter hole on the piston of the inner tube 5, the inner tube 5 is pressed and rotated, the agricultural product sample is crushed by the cooperation of the inner tube 5 and the bottom of the sample container 4, so that the sampling reagent dissolves the pesticide residues on the agricultural product sample to form a sample solution, the push rod 6 is pushed downward, the piston two of the push rod 6 is lowered to squeeze the sample solution in the inner tube 5 into the gap between the inner tube 5 and the sample container 4 through the filter hole at the bottom of the inner tube 5, the sample solution rises and flows into the solution holder 8 through the overflow channel of the machine body 1, the rapid sampling is completed, the spectrometer 3 detects the sample solution in the solution holder 8 to detect the pesticide residues, compared with the prior art, the reagent solution for sample detection can be prepared quickly, the process step of test tube is cancelled, the time consumption is shortened, the rapid detection is realized, and the work efficiency is improved.

[0024] The delivery pump of the reagent delivery unit 7 can be a peristaltic pump, the quantitative delivery of the sampling reagent is facilitated by setting the adjusting knob 9, the peristaltic pump is turned on and off by pressing the switch assembly 10, the sampling reagent is delivered into the gap between the sample container 4 and the inner tube 5 through the liquid inlet groove 11, the sample solution is delivered to the overflow channel of the machine body 1 and the solution holder 8 through the liquid outlet groove 12, the liquid outlet groove 12 is located below the liquid inlet groove 11 to avoid the overflow of the sample solution to the reagent delivery unit 7 through the liquid inlet groove 11, the crushing effect on the agricultural product sample is improved by setting a plurality of crushing knives 13, the light source 22 is turned on to illuminate the sample solution in the detection groove of the solution holder 8 for light supplement, and the accuracy of the detection of the sample solution by the spectrometer 3 is improved. Embodiment 2

[0025] As shown in Figure 1 , Figure 2 , Figure 5 and Figure 6 , on the basis of embodiment 1, a dust cover 14 and a spring 15 are further included, the dust cover 14 is slidably sleeved on the upper portion of the inner tube 5, the dust cover 14 is used to close the upper port of the sample container 4, the lower end of the spring 15 is connected with the dust cover 14, and the upper end of the spring 15 is connected with the inner tube 5.

[0026] The dust cover 14 is elastically connected to the upper portion of the inner tube 5 through the spring 15, the gap between the sample container 4 and the inner tube 5 is closed by the dust cover 14 when the inner tube 5 crushes and breaks the agricultural product sample, dust is prevented from entering, and the quality of the sample solution is improved. Embodiment 3

[0027] As shown in Figure 1 , Figure 3 and Figure 5As shown, based on Embodiment 1, it also includes a push cylinder 16, a crossbeam 17, a motor 18, a drive sleeve 19, a driven wheel 20, and a transmission belt 21. The fixed end of the push cylinder 16 is mounted on the machine body 1. The crossbeam 17 is horizontally mounted on the piston rod of the push cylinder 16. The motor 18 is mounted on the crossbeam 17. A drive wheel is concentrically mounted on the output shaft of the motor 18. The drive sleeve 19 is rotatably mounted on the crossbeam 17. The driven wheel 20 is concentrically mounted on the upper end of the drive sleeve 19. The transmission belt 21 is fitted onto the drive wheel and the driven wheel 20 of the motor 18. The lower end of the drive sleeve 19... The drive sleeve 19 is connected to the upper end of the inner tube 5. The drive sleeve 19 and the inner tube 5 can be connected by a toothed connection, a threaded connection, etc. After the agricultural product sample is placed in the sample container 4, the piston rod of the push cylinder 16 retracts and drives the crossbeam 17 to descend, thereby lowering the inner tube 5 and extending it into the bottom of the sample container 4 to press the agricultural product sample. The motor 18 drives the drive wheel to rotate, and the drive wheel drives the driven wheel 20 to rotate through the transmission belt 21. The driven wheel 20 drives the drive sleeve 19 and the inner tube 5 to rotate, so that the inner tube 5 automatically crushes and grinds the agricultural product sample, improving work efficiency.

[0028] like Figures 1 to 7 As shown, this utility model discloses a rapid detection device for pesticide residues in agricultural products. During operation, an agricultural product sample, such as vegetable leaf fragments, is first placed into a sample container 4. A sampling reagent is then introduced into the gap between the sample container 4 and the inner tube 5 via a reagent delivery unit 7. The sampling reagent mixes with the agricultural product sample through a filter hole on the piston of the inner tube 5. Next, the piston rod of the push cylinder 16 retracts, causing the crossbeam 17 to descend, thereby lowering the inner tube 5 to the bottom of the sample container 4 and pressing the agricultural product sample. A motor 18 drives the drive wheel to rotate, which in turn drives the driven wheel 20 to rotate via a transmission belt 21. The driven wheel 20 drives the drive sleeve 19 and the inner tube 5 to rotate, causing the inner tube 5 to... The automatic crushing and grinding system breaks down agricultural product samples, dissolving pesticide residues in the sampling reagent to form a sample solution. Then, push rod 6 is pushed downwards, causing piston 2 to descend and force the sample solution inside inner tube 5 through the filter holes at its bottom into the gap between inner tube 5 and sample container 4. The sample solution rises and flows through the overflow channel of body 1 into the detection slot of solution holder 8. Light source 22 illuminates the sample solution in the detection slot of solution holder 8 for supplemental lighting. Detector 3 detects the spectral density of the sample solution in solution holder 8 to determine pesticide residue levels. Finally, after the detection is complete, sample container 4 and inner tube 5 are removed as a whole, and agricultural product sample residues are cleaned.

[0029] The main functions achieved by this utility model are:

[0030] 1. It can quickly prepare reagent solutions for sample testing, eliminate the test tube process, shorten the time required, achieve rapid testing, and improve work efficiency;

[0031] 2. Quantitative delivery of sampling reagent can be realized;

[0032] 3. Dustproof cover is provided to avoid dust from entering and improve the quality of sample solution.

[0033] The installation mode, the connection mode or the setting mode of the rapid pesticide residue detection device for agricultural products are common mechanical modes, and as long as the beneficial effects can be achieved, the implementation can be carried out; the controller 2, the detector 3, the push rod 6, the reagent conveying unit 7, the adjusting knob 9, the switch assembly 10, the crushing knife 13, the spring 15, the motor 18, the driven wheel 20, the transmission belt 21 and the light source 22 of the rapid pesticide residue detection device for agricultural products are purchased on the market, and the technical personnel in the industry only need to install and operate according to the attached instruction manual, and the technical personnel in the field do not need to pay creative labor.

[0034] All the technical and scientific terms used in the present application have the same meaning as that commonly understood by the technical personnel in the technical field to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing the specific embodiments, and are not intended to limit the present application. The term "and / or" used in the present application includes any and all combinations of one or more related listed items.

[0035] The above is only the preferred embodiment of the present application, and it should be pointed out that for ordinary technical personnel in the technical field, without departing from the technical principles of the present application, a number of improvements and modifications can be made, and these improvements and modifications should be regarded as the protection scope of the present application.

Claims

1. A rapid detection device for pesticide residues in agricultural products, comprising a body (1), a controller (2), and a detector (3), wherein the controller (2) and the detector (3) are mounted on the body (1); characterized in that, It also includes a sample container (4), an inner tube (5), a push rod (6), a reagent delivery unit (7), and a solution holder (8). An installation slot is provided on the body (1). The sample container (4) is detachably installed in the installation slot of the body (1). The inner tube (5) is slidably installed in the sample container (4). A gap is provided between the outer wall of the inner tube (5) and the inner wall of the sample container (4). A piston is provided at the bottom of the inner tube (5), and the piston slides in contact with the inner wall of the sample container (4). Filter holes are provided at the bottom of both the sample container (4) and the bottom of the piston. The push rod (6) is slidably installed in the inner tube (7). In 5), the lower end of the push rod (6) is provided with piston 2, which slides in contact with the inner wall of the inner tube (5). The upper end of the push rod (6) extends above the inner tube (5). The reagent delivery unit (7) is installed on the body (1). The reagent delivery unit (7) stores the sampling reagent. The reagent delivery unit (7) is used to input the sampling reagent into the sample container (4). The solution holder (8) is placed on the body (1). An overflow channel is provided on the body (1). The overflow channel is connected to the mounting groove and the solution holder (8). The solution holder (8) and the detector (3) work together to detect pesticide residues in the sample solution.

2. The rapid detection device for pesticide residues in agricultural products as described in claim 1, characterized in that, It also includes an adjustment knob (9) and a switch assembly (10). A delivery pump is installed on the reagent delivery unit (7). The adjustment knob (9) is installed on the reagent delivery unit (7). The adjustment knob (9) is used to adjust the volume of the sampled reagent delivered by the delivery pump in a single delivery. The switch assembly (10) is installed on the adjustment knob (9).

3. The rapid detection device for pesticide residues in agricultural products as described in claim 1, characterized in that, It also includes an inlet tank (11) and an outlet tank (12). The inlet tank (11) and the outlet tank (12) are provided on the upper surface of the sample container (4). The inlet tank (11) is matched with the output pipe of the reagent delivery unit (7), and the outlet tank (12) is matched and aligned with the overflow channel of the body (1). The outlet tank (12) is located below the inlet tank (11).

4. The rapid detection device for pesticide residues in agricultural products as described in claim 1, characterized in that, It also includes multiple crushing blades (13), which are installed on the lower end face of the inner tube (5).

5. The rapid detection device for pesticide residues in agricultural products as described in claim 1, characterized in that, It also includes a dust cover (14) and a spring (15). The dust cover (14) is slidably fitted on the upper part of the inner tube (5). The dust cover (14) is used to seal the upper port of the sample container (4). The lower end of the spring (15) is connected to the dust cover (14), and the upper end of the spring (15) is connected to the inner tube (5).

6. The rapid detection device for pesticide residues in agricultural products as described in claim 1, characterized in that, It also includes a push cylinder (16), a crossbeam (17), a motor (18), a drive sleeve (19), a driven wheel (20), and a transmission belt (21). The fixed end of the push cylinder (16) is mounted on the machine body (1). The crossbeam (17) is horizontally mounted on the piston rod of the push cylinder (16). The motor (18) is mounted on the crossbeam (17). The drive wheel is concentrically mounted on the output shaft of the motor (18). The drive sleeve (19) is rotatably mounted on the crossbeam (17). The driven wheel (20) is concentrically mounted on the upper end of the drive sleeve (19). The transmission belt (21) is fitted on the drive wheel and the driven wheel (20) of the motor (18). The lower end of the drive sleeve (19) is connected to the upper end of the inner tube (5) for transmission.

7. The rapid detection device for pesticide residues in agricultural products as described in claim 1, characterized in that, It also includes a light source (22), a liquid inlet hole that matches and aligns with the overflow channel of the body (1) is provided on the side wall of the solution holder (8), a detection tank for storing sample solution is provided on the solution holder (8), the liquid inlet hole is connected to the detection tank, and the light source (22) is installed at the bottom of the detection tank of the solution holder (8).

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