A pesticide residue detection device and detection method

Abstract

The embodiments of the present application provide a device and method for detecting pesticide residue content, and relate to the field of pesticide residue content detection. A device for detecting pesticide residue content includes: a detection box, the upper top of the detection box is provided with a feeding port, a rotating part is rotatably installed between the upper and lower side walls inside the detection box, a crushing and grinding assembly is fixedly installed on the upper part of the rotating part, a sample centrifugal assembly is fixedly installed on the lower part of the rotating part, the upper and lower parts of the rotating part can rotate independently, and the upper and lower ends of the rotating part are both equipped with rotation control assemblies, and the driving assembly is installed on the upper top of the detection box. The rotating part can be driven by the driving assembly, and the rotating part can drive the crushing and grinding assembly and the sample centrifugal assembly to process fruit and vegetable samples, and the processing of fruit and vegetable samples can be completed in one detection box, and there is no need to transfer the fruit and vegetable samples during the processing process, so as to avoid contamination of the fruit and vegetable samples during processing.

Description

Technical Field

[0001] The present application relates to the technical field of pesticide residue content detection, and in particular to a pesticide residue content detection device. Background Art

[0002] The development of agricultural industrialization has made the production of agricultural products increasingly dependent on exogenous substances such as pesticides, antibiotics and hormones, and the amount of pesticides used in agricultural products remains high. The irrational use of these substances will inevitably lead to excessive pesticide residues in agricultural products, affecting consumer food safety. If the content of pesticide residues is too high, it will cause damage to the body of the consumer. In severe cases, it will cause consumers to become ill, develop abnormally, or even directly cause poisoning and death. Therefore, vegetables and fruits need to be tested for their pesticide residue content using detection devices before they are sold.

[0003] When using existing vegetable pesticide residue detection equipment for detection, the detection personnel must first crush the vegetables and fruits, then use a squeezing tool to squeeze the crushed vegetables and fruits to obtain fruit and vegetable juice, then filter the fruit and vegetable juice to remove impurities to obtain a detection sample, and then put the detection sample into the detection equipment, and use the detection equipment to detect pesticide residues in vegetables. First, the above detection method requires the use of multiple operating tools during detection. When the sample is transferred between multiple operating tools, the sample is easily contaminated, which affects the test results. Second, the process of making the detection sample is very cumbersome and requires manual production by the staff, and cannot be automatically produced, which greatly wastes the working time of the staff and reduces the work efficiency of the staff. Summary of the invention

[0004] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a pesticide residue content detection device, wherein the pesticide residue content detection device can drive a rotating part through a driving component, and the rotating part can drive a crushing and grinding component and a sample centrifugal component to process fruit and vegetable samples, and the processing of fruit and vegetable samples can be completed in a detection box, and the fruit and vegetable samples do not need to be transferred during the processing process, which can prevent the fruit and vegetable samples from being contaminated during processing, and the entire sample preparation process can be fully automated, without the need for manual operation by staff, and the detection efficiency is higher.

[0005] A pesticide residue detection device according to an embodiment of the present application includes:

[0006] A test box, wherein a feeding port is arranged on the top of the test box, a residual material discharge port is arranged on the lower left side of the test box, a valve is arranged on the residual material discharge port, and a sample delivery port is arranged on the lower right side of the test box;

[0007] A rotating member is rotatably mounted between the upper and lower side walls of the detection box, a crushing and grinding assembly is fixedly mounted on the upper part of the rotating member, a sample centrifugal assembly is fixedly mounted on the lower part of the rotating member, the upper and lower parts of the rotating member can rotate independently, and a rotation control assembly is mounted on the upper and lower ends of the rotating member;

[0008] A driving assembly, which is installed on the top of the detection box, and can drive the rotating member to rotate, and can regulate the rotation control assembly;

[0009] A detector, the detector is fixedly mounted on the lower end of the right side wall of the detection box, a sample delivery tube is connected to the feed port of the detector, the other end of the sample delivery tube is fixedly connected to the sample delivery port, and a one-way valve is installed on the end of the sample delivery tube close to the detector;

[0010] The sample conveying pumping member is installed on the right side wall of the detection box, and the suction end of the sample conveying pumping member is connected to the sample storage cavity in the detection instrument.

[0011] According to some embodiments of the present application, the rotating part includes a circular sleeve, a driving rod, a driving slot and a driving block. Two circular sleeves are provided, and a rotating connecting part is connected between the two circular sleeves. The inner wall of the circular sleeve is symmetrically provided with driving slots, and a driving rod is slidably arranged in the circular sleeve. One end of the driving rod located inside the circular sleeve is fixedly connected to the driving block, and both ends of the driving block are movably clamped in the driving slot.

[0012] According to some embodiments of the present application, the rotating connecting member includes a circular ring plate, a connecting sleeve and a rolling ball. Two circular ring plates are provided, and the two circular ring plates are respectively fixedly installed on the adjacent ends of the two circular sleeves. A connecting sleeve is commonly provided on the outer sides of the two circular ring plates, and a rolling ball is embedded and installed between the circular ring plate and the connecting sleeve.

[0013] According to some embodiments of the present application, the rotation control assembly includes a supporting cross bar, a positioning box, a rotating plate and an iron sheet. The upper ends of the upper and lower circular sleeves are symmetrically installed with supporting cross bars, and the ends of the supporting cross bars are fixedly connected to the positioning boxes. The inner walls of the detection box are provided with installation slots on the left and right sides corresponding to the height positions of the positioning boxes. A rotating plate is rotatably installed in the installation slot, and an iron sheet is installed on the side surface of the rotating plate away from the positioning box.

[0014] According to some embodiments of the present application, the driving assembly includes an L-shaped plate, an electric push rod, a movable circular plate and a driving motor. The L-shaped plate is fixedly installed at the upper rear position of the detection box, the electric push rod is fixedly installed on the upper side of the L-shaped plate, the telescopic end of the electric push rod passes through the upper side plate of the L-shaped plate and is connected to the movable circular plate, the driving motor is fixedly installed in the middle position of the upper surface of the movable circular plate, and the output end of the driving motor is connected to the upper end of the driving rod.

[0015] According to some embodiments of the present application, a bending push rod is respectively connected to the left and right sides of the movable circular plate, a magnet block is installed on the lower end of the bending push rod close to a side of the detection box, and a positioning slot corresponding to the installation slot is opened on the outer side of the detection box. When the lower end of the bending push rod moves into the positioning slot, the magnet block can attract the iron sheet to rotate the rotating plate.

[0016] According to some embodiments of the present application, the crushing and grinding assembly includes a grinding shell, a crushing knife and a grinding block. The upper end of the upper circular sleeve is equipped with a crushing knife, and the lower end of the upper circular sleeve is equipped with a grinding block. The grinding shell is fixedly installed on the upper inner wall of the detection box, the lower part of the grinding shell is funnel-shaped, and the bottom of the grinding shell is provided with a through hole for the circular sleeve to pass through. The grinding block is close to the lower part of the grinding shell, and a gap is left between the outer wall of the grinding block and the inner wall of the grinding shell, and the bottom of the grinding shell is evenly provided with leakage holes.

[0017] According to some embodiments of the present application, the sample centrifugation assembly includes a funnel-shaped screen, a waste residue collecting cylinder and a sealing cover. The funnel-shaped screen is fixedly mounted on the lower end of the lower circular sleeve, a waste residue collecting cylinder is fixedly mounted on the lower inclined wall of the funnel-shaped screen, and a sealing cover is spirally mounted on the lower end of the waste residue collecting cylinder.

[0018] According to some embodiments of the present application, the sample transporting pumping member includes a fixed plate, a telescopic airbag, a movable plate, an air outlet valve and an exhaust pipe. The fixed plate is fixedly mounted on the right side wall of the detection box, the telescopic airbag is fixedly mounted on the fixed plate, the upper end of the telescopic airbag is fixedly connected to the movable plate, the upper end of the telescopic airbag is installed with an air outlet valve, the lower end of the telescopic airbag is connected to the exhaust pipe, and the end of the exhaust pipe is fixedly connected in the detection cavity of the detector.

[0019] According to some embodiments of the present application, a guide rod is vertically installed on the right end of the upper surface of the fixed plate, the upper end of the guide rod passes through the movable plate and is connected to a limiting block, and a spring is sleeved on the guide rod between the fixed plate and the movable plate.

[0020] According to some embodiments of the present application, a push plate is fixedly installed at the lower end of the bent push rod on the right side, and the push plate can push the movable plate when it moves downward.

[0021] According to some embodiments of the present application, an observation door is rotatably installed on the front side of the detection box, and the observation door is a visible tempered glass door. When the observation door is closed, it fits tightly with the detection box.

[0022] A method for using a pesticide residue content detection device comprises the following steps:

[0023] Step 1: Turn on the electric push rod to move the movable circular plate downward, so that the lower end of the bent push rod is aligned with the upper positioning slot. At this time, the rotation control component can release the control of the upper rotating member, and the movable circular plate drives the driving rod to move downward so that the driving block extends into the upper circular sleeve. Then turn on the driving motor to drive the driving rod to rotate, so that the upper circular sleeve can rotate, so that the crushing and grinding component can operate;

[0024] Step 2: The fruit and vegetable samples to be tested are thrown into the testing box through the feeding port. The fruit and vegetable samples will enter the grinding shell. The fruit and vegetable samples are crushed into small pieces under the action of the crushing knife, and then fall into the gap between the grinding block and the grinding shell for grinding. The ground fruit and vegetable samples fall into the sample centrifugal assembly through the leakage hole;

[0025] Step 3: Then turn off the drive motor, and use the electric push rod to push the movable circular plate to continue to move downward until it is aligned with the lower positioning slot. At this time, the rotation control component can release the control of the lower rotating part, and turn on the drive motor again. The drive rod can drive the lower circular sleeve to rotate, and the crushed fruit and vegetable samples are centrifuged in the sample centrifugal component, so that the juice in the fruit and vegetable samples can be separated to facilitate the detection of pesticide residue content;

[0026] Step 4: Turn off the drive motor and continue to push the movable circular plate downward through the electric push rod. During the movement, the push plate at the lower end of the right bent push rod can push the movable plate downward to squeeze the telescopic airbag, and the gas in the telescopic airbag is discharged through the outlet valve. Then the movable circular plate is moved upward through the electric push rod. At this time, the push plate releases the pressure on the movable plate. The movable plate moves upward under the rebound force of the spring and stretches the telescopic airbag. During the stretching process of the telescopic airbag, the detection cavity in the detector will be evacuated through the exhaust pipe. Under the action of vacuum, the sample detection liquid at the bottom of the detection box can enter the detection cavity in the detector through the sample delivery pipe, and the detector can detect the juice of fruit and vegetable samples.

[0027] The beneficial effects of the present application are as follows: the rotating part can be driven by the driving assembly, and the rotating part can drive the crushing and grinding assembly and the sample centrifugal assembly to process the fruit and vegetable samples, and the processing of the fruit and vegetable samples can be completed in one detection box, and the fruit and vegetable samples do not need to be transferred during the processing, which can prevent the fruit and vegetable samples from being contaminated during processing, and by arranging the rotating part so that the upper and lower parts can rotate independently, the crushing and grinding assembly or the sample centrifugal assembly can be driven separately when in use, so that the crushing and grinding assembly and the sample centrifugal assembly can be used separately without affecting each other during work, and the resistance is smaller when the crushing and grinding assembly and the sample centrifugal assembly rotate at the same time compared to directly driving the entire rotating part, and the entire sample preparation process can be fully automated without the need for manual operation by staff, and the detection efficiency is higher.

[0028] In addition, the driving component can also regulate the rotation control component during the movement, so that when the driving component drives the upper or lower part of the rotating part, it can simultaneously regulate the rotation control component, so that the rotation control component releases the restriction on the upper or lower part of the rotating part, so that when one part of the rotating part rotates, the other part is in a stationary state.

[0029] By setting up a sample transport pump, the sample solution in the detection box can be pumped into the detection instrument, and the operation of the sample transport pump is also controlled by the driving component. The driving component can drive the sample transport pump to work during the up and down driving process, so that the sample transport pump can be completed without providing additional driving components during operation.

[0030] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 is a schematic diagram of the three-dimensional structure of a pesticide residue content detection device according to an embodiment of the present application;

[0033] Figure 2 is a schematic diagram of the internal structure of a pesticide residue content detection device according to an embodiment of the present application;

[0034] Figure 3 is a schematic diagram of a three-dimensional structure of a rotating member according to an embodiment of the present application;

[0035] Figure 4 According to the embodiment of the present application Figure 3 The enlarged structural diagram at C in the middle;

[0036] Figure 5 is a schematic structural diagram of a crushing and grinding assembly according to an embodiment of the present application;

[0037] Figure 6 is a schematic structural diagram of a sample centrifugation assembly according to an embodiment of the present application;

[0038] Figure 7 is a schematic diagram of the three-dimensional structure of a driving assembly according to an embodiment of the present application;

[0039] Figure 8 According to the embodiment of the present application Figure 2 The enlarged structural diagram at B in the middle;

[0040] Fig. 9 According to the embodiment of the present application Figure 2 A schematic diagram of the enlarged three-dimensional structure at center A;

[0041] Fig.10 It is a schematic diagram of the three-dimensional structure of the sample transport pump according to an embodiment of the present application.

[0042] Icons: 1. Detection box; 11. Observation door; 12. Positioning slot; 13. Installation slot; 14. Feeding port; 15. Residual material outlet; 16. Sample delivery port; 2. Rotating part; 21. Circular sleeve; 22. Driving rod; 23. Driving slot; 24. Driving block; 25. Rotating connecting part; 251. Circular ring plate; 252. Connecting sleeve; 254. Rolling ball; 3. Crushing and grinding assembly; 31. Grinding shell; 32. Crushing knife; 33. Grinding block; 34. Leakage hole; 4. Sample centrifugal assembly; 41. Funnel-shaped screen; 42. Waste slag collection Middle cylinder; 43, sealing cover; 6, driving assembly; 61, L-shaped plate; 62, electric push rod; 63, moving circular plate; 64, driving motor; 65, bending push rod; 66, magnet block; 67, push plate; 7, sample conveying pumping member; 71, fixed plate; 72, telescopic airbag; 73, movable plate; 74, guide rod; 75, spring; 76, exhaust valve; 77, exhaust pipe; 8, detector; 9, rotation control assembly; 91, supporting cross bar; 92, positioning box; 93, rotating plate; 94, iron sheet; 10, sample conveying pipe; 101, one-way valve. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0044] In order to make the purpose, technical solutions and advantages of the implementation methods of this application clearer, the technical solutions in the implementation methods of this application will be clearly and completely described below in conjunction with the drawings in the implementation methods of this application. Obviously, the described implementation methods are part of the implementation methods of this application, not all of the implementation methods. Based on the implementation methods in this application, all other implementation methods obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0045] A pesticide residue content detection device and detection method according to an embodiment of the present application will be described below with reference to the accompanying drawings.

[0046] See also Figures 1 to 10 According to an embodiment of the present application, a pesticide residue content detection device includes a detection box 1, a feeding port 14 is provided on the top of the detection box 1, a residual material discharge port 15 is provided at the lower left end of the detection box 1, which is convenient for discharging excess test samples, and a valve is provided on the residual material discharge port 15. A sample delivery port 16 is provided at the lower right end of the detection box 1. An observation door 11 is rotatably installed on the front side of the detection box 1. The observation door 11 is a visible tempered glass door, which is convenient for observing the production situation inside the detection box 1 when preparing the sample test liquid. When the observation door 11 is closed, it fits tightly with the detection box 1;

[0047] A rotating member 2 is rotatably mounted between the upper and lower side walls of the detection box 1, a crushing and grinding assembly 3 is fixedly mounted on the upper part of the rotating member 2, a sample centrifugal assembly 4 is fixedly mounted on the lower part of the rotating member 2, the upper and lower parts of the rotating member 2 can rotate independently, and a rotation control assembly 9 is mounted on the upper and lower ends of the rotating member 2;

[0048] A driving assembly 6, which is mounted on the top of the detection box 1. The driving assembly 6 can drive the rotating member 2 to rotate, and the driving assembly 6 can regulate the rotation control assembly 9;

[0049] The detector 8 is fixedly mounted on the lower end of the right side wall of the detection box 1. The feed port of the detector 8 is connected to a sample delivery tube 10. The other end of the sample delivery tube 10 is fixedly connected to the sample delivery port 16. A one-way valve 101 is installed on the end of the sample delivery tube 10 close to the detector 8.

[0050] The sample conveying pumping member 7 is installed on the right side wall of the detection box 1 , and the air suction end of the sample conveying pumping member 7 is connected to the sample storage cavity in the detection instrument 8 .

[0051] In this embodiment, the upper and lower parts of the rotating member 2 are independently rotatable, so that the crushing and grinding component 3 or the sample centrifugal component 4 can be driven separately when in use, so that the crushing and grinding component 3 and the sample centrifugal component 4 can be used separately without affecting each other during operation. Compared with directly driving the entire rotating member 2 to make the crushing and grinding component 3 and the sample centrifugal component 4 rotate at the same time, the resistance is smaller, and the processing of fruit and vegetable samples can be completed in one detection box 1. There is no need to transfer the fruit and vegetable samples during the processing process, which can prevent the fruit and vegetable samples from being contaminated during processing.

[0052] The driving component 6 can drive the rotating member 2, so that the rotating member 2 can drive the crushing and grinding component 3 and the sample centrifugal component 4 to process the fruit and vegetable samples, and the driving component 6 can also adjust the rotation control component 9 during the movement, so that when the driving component 6 drives the upper part or the lower part of the rotating member 2, it can simultaneously adjust the rotation control component 9, so that the rotation control component 9 releases the restriction on the upper part or the lower part of the rotating member 2, so that when a part of the rotating member 2 rotates, the other part is in a stationary state.

[0053] By setting up the sample transport pump 7, the sample solution in the detection box 1 can be pumped into the detection instrument 8, and the operation of the sample transport pump 7 is also controlled by the driving component 6. The driving component 6 can drive the sample transport pump 7 to work during the up and down driving process, so that the sample transport pump 7 can be completed without providing additional driving components during operation.

[0054] See also Figure 2-3 The rotating member 2 includes a circular sleeve 21, a driving rod 22, a driving slot 23 and a driving block 24. The circular sleeve 21 is provided with two, and a rotating connecting member 25 is connected between the two circular sleeves 21. The inner wall of the circular sleeve 21 is symmetrically provided with a driving slot 23. A driving rod 22 is slidably arranged in the circular sleeve 21, and one end of the driving rod 22 located inside the circular sleeve 21 is fixedly connected with a driving block 24. Both ends of the driving block 24 are movably arranged in the driving slot 23. The two circular sleeves 21 are connected together by the rotating connecting member 25, so that the two circular sleeves 21 can rotate independently of each other. By providing a driving slot 23 in the circular sleeve 21, and the driving block 24 can be movably inserted into the driving slot 23, when working, by moving the driving rod 22 up and down to make the driving block 24 inserted into the corresponding circular sleeve 21, the corresponding circular sleeve 21 can be driven to rotate when the driving rod 22 is driven to rotate, so that the rotating member 2 can drive the corresponding components to work independently.

[0055] The rotating connecting member 25 includes a circular ring plate 251, a connecting sleeve 252 and a rolling ball 254. There are two circular ring plates 251, which are respectively fixedly mounted on the adjacent ends of the two circular sleeves 21. The outer sides of the two circular ring plates 251 are jointly sleeved with a connecting sleeve 252, and a rolling ball 254 is inlaid and installed between the circular ring plates 251 and the connecting sleeve 252. By sleeveing ​​the connecting sleeve 252 on the two circular ring plates 251 and installing the rolling ball 254 between the side walls of the circular ring plates 251 and the connecting sleeve 252, the upper and lower circular sleeves 21 can be connected, and by setting the rolling ball 254, the upper and lower circular sleeves 21 can rotate independently of each other.

[0056] See also Figure 2 , Figure 8 and Fig. 9 The rotation control assembly 9 includes a supporting cross bar 91, a positioning box 92, a rotating plate 93 and an iron sheet 94. The upper ends of the upper and lower circular sleeves 21 are symmetrically installed with supporting cross bars 91, and the end of the supporting cross bar 91 is fixedly connected with the positioning box 92. The left and right sides of the inner wall of the detection box 1 are provided with mounting slots 13 at the height position corresponding to the positioning box 92. The rotating plate 93 is rotatably installed in the mounting slot 13. The side surface of the rotating plate 93 away from the positioning box 92 is provided with an iron sheet 94. The rotating plate 93 can rotate in the mounting slot 13, and an iron sheet 94 is provided on one side surface of the rotating plate 93. When the rotating member 2 is not driven, the rotating plate 93 is The iron sheet 94 provided on 93 makes it impossible for the rotating plate 93 to be tightly attached to the side wall of the installation slot 13, so the rotating plate 93 will rotate and be stuck in the positioning box 92. Under the action of the positioning box 92 and the rotating plate 93, the corresponding circular sleeve 21 can be limited. When the rotating member 2 is to be driven, the driving assembly 6 is adjusted to make the lower end of the bent push rod 65 move to be aligned with the corresponding positioning slot 12. At this time, the magnet block 66 at the lower end of the bent push rod 65 can attract the iron sheet 94. Under the action of the magnet block 66, the rotating plate 93 will rotate into the installation slot 13. At this time, the corresponding circular sleeve 21 can be released from the limit, and the circular sleeve 21 can rotate freely.

[0057] See also Figure 7The driving assembly 6 includes an L-shaped plate 61, an electric push rod 62, a movable circular plate 63 and a driving motor 64. The L-shaped plate 61 is fixedly installed at the upper rear side of the detection box 1. The upper side of the L-shaped plate 61 is fixedly installed with an electric push rod 62. The telescopic end of the electric push rod 62 passes through the upper side plate of the L-shaped plate 61 and is connected to the movable circular plate 63. The driving motor 64 is fixedly installed at the middle position of the upper surface of the movable circular plate 63. The output end of the driving motor 64 is connected to the upper end of the driving rod 22. The movable circular plate 63 can be pushed up and down by the electric push rod 62, so that the driving rod 22 can be adjusted, so that the lower end of the driving rod 22 can be moved to the upper or lower circular sleeve 21 as required. The driving motor 64 on the movable circular plate 63 can drive the driving rod 22 to rotate, and the rotating member 2 can be driven to rotate during the rotation of the driving rod 22.

[0058] The left and right sides of the movable circular plate 63 are respectively connected with a bending push rod 65, and a magnet block 66 is installed on the side of the lower end of the bending push rod 65 close to the detection box 1. The outer side surface of the detection box 1 is provided with a positioning groove 12 corresponding to the installation groove 13. When the lower end of the bending push rod 65 moves into the positioning groove 12, the magnet block 66 can attract the iron sheet 94 to rotate the rotating plate 93. Through the magnet block 66 at the lower end of the bending push rod 65, when the lower end of the driving rod 22 moves to the corresponding driving position, the magnet block 66 can be used to release the rotation restriction of the rotating control component 9 on the rotating member 2, so that when the driving rod 22 drives the circular sleeve 21, the circular sleeve 21 can rotate smoothly.

[0059] See also Figure 5 The crushing and grinding assembly 3 includes a grinding shell 31, a crushing knife 32 and a grinding block 33. The crushing knife 32 is installed at the upper end of the upper circular sleeve 21, and the grinding block 33 is installed at the lower end of the upper circular sleeve 21. The grinding shell 31 is fixedly installed on the upper inner wall of the detection box 1. The lower part of the grinding shell 31 is funnel-shaped, and a through hole for the circular sleeve 21 to pass through is opened at the bottom of the grinding shell 31. The grinding block 33 is close to the lower part of the grinding shell 31, and the outer wall of the grinding block 33 is close to the grinding shell. There are gaps between the inner walls of the grinding shell 31, and leakage holes 34 are evenly opened at the bottom of the grinding shell 31. When the upper circular sleeve 21 rotates, it can drive the crushing knife 32 to rotate. During the rotation of the crushing knife 32, the fruit and vegetable samples thrown into the detection box 1 can be crushed into small pieces. The crushed fruit and vegetable samples enter between the grinding block 33 and the grinding shell 31. As the grinding block 33 rotates, the fruit and vegetable samples are ground into a slurry state, which is convenient for extracting detection juice from the fruit and vegetable samples.

[0060] See also Figure 6The sample centrifugal assembly 4 includes a funnel-shaped screen 41, a waste residue concentration cylinder 42 and a sealing cover 43. The funnel-shaped screen 41 is fixedly installed at the lower end of the lower circular sleeve 21. The waste residue concentration cylinder 42 is fixedly installed on the lower inclined wall of the funnel-shaped screen 41. The sealing cover 43 is spirally installed at the lower end of the waste residue concentration cylinder 42. The fruit and vegetable samples will fall into the funnel-shaped screen 41 after being crushed and ground. When the funnel-shaped screen 41 rotates with the lower circular sleeve 21, the fruit and vegetable samples in the pulp state can be centrifuged, so that the juice in the fruit and vegetable samples is separated. In the centrifugal process, the fruit and vegetable waste will be dispersed to the surroundings under the action of centrifugal force, and then enter the waste residue concentration cylinder 42 under the action of its own weight. After the detection is completed, the sealing cover 43 can be opened to clean out the waste residue.

[0061] See also Fig.10 The sample conveying pumping member 7 includes a fixed plate 71, a telescopic airbag 72, a movable plate 73, an exhaust valve 76 and an exhaust pipe 77. The fixed plate 71 is fixedly installed on the right side wall of the detection box 1. The telescopic airbag 72 is fixedly installed on the fixed plate 71. The upper end of the telescopic airbag 72 is fixedly connected to the movable plate 73. The upper end of the telescopic airbag 72 is installed with an exhaust valve 76. The lower end of the telescopic airbag 72 is connected to an exhaust pipe 77. The end of the exhaust pipe 77 is fixedly connected to the detection cavity of the detector 8. A guide rod 74 is vertically installed at the right end of the upper surface of the fixed plate 71. The upper end of the guide rod 74 passes through the movable plate 73 and is connected to a limited position block. A spring 75 is sleeved on the guide rod 74 between the fixed plate 71 and the movable plate 73. The lower end of the right bent push rod 65 is fixedly installed with a push plate 67. The push plate 67 When moving downward, the movable plate 73 can be pushed. After the test sample is made, the movable circular plate 63 is continued to be pushed downward by the electric push rod 62, so that the push plate 67 at the lower end of the right bent push rod 65 pushes the movable plate 73 downward. During the downward pressure, the telescopic airbag 72 is compressed, and the gas in the telescopic airbag 72 is discharged through the outlet valve 76. When the movable plate 73 moves to the lowermost end, the movable circular plate 63 is driven upward by the electric push rod 62. At this time, under the rebound force of the spring 75, the movable plate 73 gradually moves upward and drives the telescopic airbag 72 to stretch. During the stretching process of the telescopic airbag 72, the detection cavity in the detector 8 is evacuated through the exhaust pipe 77. Under the vacuum action, the sample detection liquid at the bottom of the detection box 1 can enter the detection cavity in the detector 8 through the sample delivery pipe 10.

[0062] Specifically, the working principle of the pesticide residue content detection device is as follows: the electric push rod 62 is turned on to move the movable circular plate 63 downward, so that the lower end of the bent push rod 65 is aligned with the upper positioning slot 12, and the rotation control component 9 can release the control of the upper rotating member 2, and the movable circular plate 63 drives the driving rod 22 to move downward so that the driving block 24 extends into the upper circular sleeve 21, and then the driving motor 64 is turned on to drive the driving rod 22 to rotate, so that the upper circular sleeve 21 can be rotated, so that the crushing and grinding component 3 The machine can operate, and the fruit and vegetable samples to be tested are thrown into the testing box 1 through the feeding port 14, and the fruit and vegetable samples will enter the grinding shell 31. The fruit and vegetable samples are crushed into small pieces under the action of the crushing knife 32, and then fall into the gap between the grinding block 33 and the grinding shell 31 for grinding. The ground fruit and vegetable samples fall into the sample centrifugal assembly 4 through the leakage hole 34, and then the driving motor 64 is turned off, and the moving circular plate 63 is pushed by the electric push rod 62 to continue to move downward until it is aligned with the lower positioning slot 12. At this time, the rotating control assembly 9 can be released. The lower rotating member 2 is controlled, the driving motor 64 is turned on again, the driving rod 22 can drive the lower circular sleeve 21 to rotate, the crushed fruit and vegetable samples are centrifuged in the sample centrifugal assembly 4, so that the juice in the fruit and vegetable samples can be separated, so as to facilitate the detection of pesticide residue content, the driving motor 64 is turned off, and the movable circular plate 63 is continuously pushed downward by the electric push rod 62. During the movement, the push plate 67 at the lower end of the right bent push rod 65 can push the movable plate 73 downward to squeeze the telescopic airbag 72, and the gas in the telescopic airbag 72 is vented. The air is discharged through the outlet valve 76, and then the movable circular plate 63 is moved upward by the electric push rod 62. At this time, the push plate 67 releases the pressure on the movable plate 73. The movable plate 73 moves upward under the rebound force of the spring 75 and stretches the telescopic airbag 72. During the stretching process of the telescopic airbag 72, the detection cavity in the detector 8 is evacuated through the exhaust pipe 77. Under the action of the vacuum, the sample detection liquid at the bottom of the detection box 1 can enter the detection cavity in the detector 8 through the sample delivery pipe 10, and the detector 8 can detect the fruit and vegetable sample juice.

[0063] It should be noted that the specific model specifications of the electric push rod 62 and the drive motor 64 need to be selected and determined according to the actual specifications of the device, and the specific selection calculation method adopts the existing technology in the field, so it will not be repeated in detail.

[0064] The power supply and principle of the electric push rod 62 and the driving motor 64 are clear to those skilled in the art and will not be described in detail here.

[0065] The above are only embodiments of the present application and are not intended to limit the scope of protection of the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

Claims

1. A pesticide residue content detection device, characterized in that: include: A test box (1), wherein a feeding port (14) is provided on the top of the test box (1), a residual material discharge port (15) is provided on the left lower end of the test box (1), a valve is provided on the residual material discharge port (15), and a sample delivery port (16) is provided on the right lower end of the test box (1); A rotating member (2) is rotatably mounted between the upper and lower side walls of the detection box (1); a crushing and grinding assembly (3) is fixedly mounted on the upper part of the rotating member (2); a sample centrifugal assembly (4) is fixedly mounted on the lower part of the rotating member (2); the upper and lower parts of the rotating member (2) can rotate independently; and a rotation control assembly (9) is mounted on the upper ends of the upper and lower parts of the rotating member (2); A driving assembly (6), the driving assembly (6) being mounted on the top of the detection box (1), the driving assembly (6) being capable of driving the rotating member (2) to rotate, and the driving assembly (6) being capable of regulating the rotation control assembly (9); A detector (8), the detector (8) being fixedly mounted on the lower end of the right side wall of the detection box (1); a sample delivery tube (10) being connected to a feed port of the detector (8); the other end of the sample delivery tube (10) being fixedly connected to a sample delivery port (16); and a one-way valve (101) being installed on one end of the sample delivery tube (10) close to the detector (8); A sample conveying pumping member (7), the sample conveying pumping member (7) being mounted on the right side wall of the detection box (1), the suction end of the sample conveying pumping member (7) being connected to the sample storage cavity in the detection instrument (8); The driving assembly (6) comprises an L-shaped plate (61), an electric push rod (62), a movable circular plate (63) and a driving motor (64); the L-shaped plate (61) is fixedly mounted at the upper rear side of the detection box (1); the electric push rod (62) is fixedly mounted on the upper side of the L-shaped plate (61); the telescopic end of the electric push rod (62) passes through the upper side plate of the L-shaped plate (61) and is connected to the movable circular plate (63); and the driving motor (64) is fixedly mounted at the middle position of the upper surface of the movable circular plate (63); The left and right sides of the movable circular plate (63) are respectively connected with bent push rods (65), and a push plate (67) is fixedly mounted on the lower end of the right bent push rod (65), and the push plate (67) can push the movable plate (73) when it moves downward; A magnet block (66) is installed on a side surface of the lower end of the bent push rod (65) close to the detection box (1), and a positioning slot (12) corresponding to the mounting slot (13) is provided on the outer side surface of the detection box (1). When the lower end of the bent push rod (65) moves into the positioning slot (12), the magnet block (66) can attract the iron sheet (94) to rotate the rotating plate (93); The rotating member (2) comprises a circular sleeve (21), a driving rod (22), a driving slot (23) and a driving block (24); two circular sleeves (21) are provided, a rotating connecting member (25) is connected between the two circular sleeves (21); the inner wall of the circular sleeve (21) is symmetrically provided with a driving slot (23); a driving rod (22) is slidably arranged in the circular sleeve (21); one end of the driving rod (22) located inside the circular sleeve (21) is fixedly connected to the driving block (24); two ends of the driving block (24) are movably clamped in the driving slot (23); and the upper end of the driving rod (22) is connected to the output end of the driving motor (64); The rotating connecting member (25) comprises a circular plate (251), a connecting sleeve (252) and a rolling ball (254); two circular plates (251) are provided, and the two circular plates (251) are respectively fixedly mounted on the adjacent ends of the two circular sleeves (21); the connecting sleeve (252) is sleeved on the outer sides of the two circular plates (251); and the rolling ball (254) is embedded and installed between the circular plate (251) and the connecting sleeve (252); The rotation control assembly (9) comprises a supporting cross bar (91), a positioning box (92), a rotating plate (93) and an iron sheet (94); the upper ends of the upper and lower circular sleeves (21) are respectively symmetrically provided with supporting cross bars (91); the ends of the supporting cross bars (91) are fixedly connected with the positioning box (92); the inner walls of the detection box (1) are provided with mounting slots (13) at positions corresponding to the height of the positioning box (92) on the left and right sides; the rotating plate (93) is rotatably installed in the mounting slots (13); and the iron sheet (94) is installed on a side surface of the rotating plate (93) away from the positioning box (92); The sample centrifugal assembly (4) comprises a funnel-shaped screen (41), a waste residue concentration cylinder (42) and a sealing cover (43); the funnel-shaped screen (41) is fixedly mounted on the lower end of the lower circular sleeve (21); the waste residue concentration cylinder (42) is fixedly mounted on the lower inclined wall of the funnel-shaped screen (41); and the sealing cover (43) is spirally mounted on the lower end of the waste residue concentration cylinder (42); The sample conveying pumping member (7) comprises a fixed plate (71), a telescopic airbag (72), a movable plate (73), an air outlet valve (76) and an air extraction pipe (77); the fixed plate (71) is fixedly mounted on the right side wall of the detection box (1); the telescopic airbag (72) is fixedly mounted on the fixed plate (71); the upper end of the telescopic airbag (72) is fixedly connected to the movable plate (73); the upper end of the telescopic airbag (72) is installed with an air outlet valve (76); the lower end of the telescopic airbag (72) is connected to the air extraction pipe (77); the end of the air extraction pipe (77) is fixedly connected to the detection cavity of the detector (8); A guide rod (74) is vertically mounted on the right end of the upper surface of the fixed plate (71); the upper end of the guide rod (74) passes through the movable plate (73) and is connected to a limit block; a spring (75) is sleeved on the guide rod (74) and is located between the fixed plate (71) and the movable plate (73).

2. A method for using a pesticide residue content detection device, using the pesticide residue content detection device according to claim 1, characterized in that: The steps include: Step 1: Turn on the electric push rod (62) to move the movable circular plate (63) downward, so that the lower end of the bent push rod (65) is aligned with the upper positioning groove (12). At this time, the rotation control component (9) can release the control of the upper rotating member (2), and the movable circular plate (63) drives the driving rod (22) to move downward so that the driving block (24) extends into the upper circular sleeve (21). Then, turn on the driving motor (64) to drive the driving rod (22) to rotate, so that the upper circular sleeve (21) can rotate, thereby enabling the crushing and grinding component (3) to operate; Step 2: The fruit and vegetable samples to be tested are thrown into the testing box (1) through the feeding port (14). The fruit and vegetable samples enter the grinding shell (31). The fruit and vegetable samples are crushed into small pieces by the crushing knife (32), and then fall into the gap between the grinding block (33) and the grinding shell (31) for grinding. The ground fruit and vegetable samples fall into the sample centrifugal assembly (4) through the leakage hole (34); Step 3: Then, the driving motor (64) is turned off, and the moving circular plate (63) is pushed by the electric push rod (62) to continue to move downward until it is aligned with the lower positioning slot (12). At this time, the rotation control component (9) can release the control of the lower rotating member (2). The driving motor (64) is turned on again, and the driving rod (22) can drive the lower circular sleeve (21) to rotate. The crushed fruit and vegetable samples are centrifuged in the sample centrifugal component (4), so that the juice in the fruit and vegetable samples can be separated, so as to facilitate the detection of pesticide residue content. Step 4: Turn off the driving motor (64), and continue to push the movable circular plate (63) downward through the electric push rod (62). During the movement, the push plate (67) at the lower end of the right bent push rod (65) can push the movable plate (73) downward to squeeze the telescopic airbag (72), and the gas in the telescopic airbag (72) is discharged through the outlet valve (76). Then, the movable circular plate (63) is moved upward through the electric push rod (62). At this time, the push plate (67) releases the pressure on the movable plate (73). The movable plate (73) moves upward under the rebound force of the spring (75) and stretches the telescopic airbag (72). During the stretching process of the telescopic airbag (72), the detection cavity in the detector (8) is evacuated through the exhaust pipe (77). Under the vacuum effect, the sample detection liquid at the bottom of the detection box (1) can enter the detection cavity in the detection instrument (8) through the sample delivery pipe (10), and the detection instrument (8) can detect the fruit and vegetable sample juice.

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