A device for detecting pesticide residues in fruits and vegetables

Abstract

The present invention relates to the technical field of pesticide detection. The present application discloses a device for detecting pesticide residues in fruits and vegetables, including a liquid storage rolling bin, a T-shaped slide rail is fixedly installed on the outer surface of the liquid storage rolling bin between the side plates, a drainage hole is arranged in the middle of the outer surface of the liquid storage rolling bin and between the T-shaped slide rails, the pesticide solvent inside the liquid storage rolling bin is discharged outward through the drainage hole and enters the interior of the drainage device, the T-shaped slide rail and the drainage hole are distributed in a circular array. The extrusion seat will squeeze the liquid absorption device, so that the connecting plate slides along the surface of the T-shaped slide rail, the spacing between the connecting plates is reduced, the liquid absorption sponge is squeezed to discharge the absorbed pesticide solvent, the pesticide solvent enters the interior of the liquid inlet tank through the leakage hole and the installation sleeve under the action of gravity, so that the detection plate is completely immersed in the pesticide solvent, the detection method of the device is more convenient to operate, and the surface of the fruits and vegetables to be detected can be completely detected, which improves the practicality of the device.

Description

Technical Field

[0001] The present application relates to the technical field of pesticide detection, and in particular to a device for detecting pesticide residues in fruits and vegetables. Background Art

[0002] Pesticide residues on the surface of fruits and vegetables can cause great harm to the human body. In order to avoid this problem, managers will sample and test fruits and vegetables on the market. In the traditional detection method, operators will spray solvents that can dissolve pesticides on the surface of fruits and vegetables, collect the pesticide solvents, and use test paper to test the pesticide solvents. According to the color change of the test paper, it is judged whether the pesticides on the surface of fruits and vegetables exceed the standard. This detection method has many inconveniences. In order to ensure the accuracy of the detection, the agricultural solvent needs to be evenly applied to the surface of fruits and vegetables, which also leads to inconvenience in subsequent collection operations. In this regard, this application document proposes a fruit and vegetable pesticide residue detection device, which aims to replace the original detection method and eliminate the original problems. Summary of the invention

[0003] The present application proposes a fruit and vegetable pesticide residue detection device, which has the advantages of simplifying traditional detection steps and having higher detection accuracy, and is used to solve the many inconveniences of traditional detection methods.

[0004] To achieve the above purpose, the present application adopts the following technical solution: a device for detecting pesticide residues in fruits and vegetables, comprising:

[0005] The shell has a handle fixedly mounted on the top, a right axial hole is opened on the right side of the shell, and a right through hole is opened on the left side of the shell. The internal situation of the shell can be observed through the right through hole, and the liquid suction device can be disassembled and replaced.

[0006] A connecting arm is arranged on the left side of the inner wall of the outer shell near the right through hole, and the connecting arm is distributed in a circular array. A circular inner plate is fixedly installed at one end of the connecting arm, and a left axial hole is opened on one side of the circular inner plate. A rolling device is provided in the common movable sleeve inside the right axial hole and the left axial hole.

[0007] Specifically, a bottom groove is provided at the bottom of the shell so that the internal rolling device can contact the fruits and vegetables to be detected.

[0008] Specifically, a leakage hole is provided at the bottom of the shell on the right side of the bottom groove, a reaction device is clamped inside the leakage hole, and an annular rubber plug is sleeved on the left side of the shell on the outside of the circular inner plate.

[0009] A second connecting plate, an extrusion rod is fixedly installed on one side of the second connecting plate near the outer side, the extrusion rods are distributed in a circular array, and an extrusion seat is fixedly installed on one end of the extrusion rod.

[0010] Furthermore, the rolling device includes a liquid storage rolling chamber, and the interior of the liquid storage rolling chamber carries a pesticide solvent.

[0011] Specifically, a right connecting shaft is fixedly installed on the right end of the liquid storage rolling bin, and the right connecting shaft is connected to the interior of the liquid storage rolling bin. One end of the right connecting shaft is provided with a threaded sealing plug through a threaded sleeve, and the threaded sealing plug realizes sealing of the right connecting shaft to prevent leakage of the pesticide solvent inside the liquid storage rolling bin.

[0012] Specifically, a left connecting shaft is fixedly installed on the left end of the liquid storage rolling bin, and the right connecting shaft and the left connecting shaft are respectively sleeved on the right shaft hole and the left shaft hole, a side panel is fixedly installed on the outer surface of the liquid storage rolling bin near the two ends, a top seat is fixedly installed on the inner side of the side panel near the top, and a limiting ring is arranged on the right side of the outer surface of the liquid storage rolling bin near the side panel, and the limiting ring serves as a limiting stop.

[0013] Specifically, a T-shaped slide rail is fixedly installed on the outer surface of the liquid storage rolling bin between the side panels, and a drainage hole is provided in the middle of the outer surface of the liquid storage rolling bin between the T-shaped slide rails. The pesticide solvent inside the liquid storage rolling bin is discharged outwardly through the drainage hole and enters the interior of the drainage device.

[0014] Further, the side plates, T-shaped slide rails and drainage holes are all distributed in a circular array;

[0015] Specifically, the outer side of the top seat is provided with a liquid discharge device, and the outer side of the T-shaped slide rail is clamped with a liquid suction device;

[0016] Specifically, the squeezing rods correspond to the liquid suction devices one by one.

[0017] Furthermore, the drainage device includes a drainage pipe, both ends of which are fixedly mounted on the top seat respectively, and a blocking tube is provided at a position near the middle of the bottom of the outer surface of the drainage pipe, the blocking tube is connected to the drainage pipe, and one end of the blocking tube is connected to the drainage hole, and the pesticide solvent inside the liquid storage rolling bin enters into the interior of the drainage pipe through the drainage hole and the blocking tube.

[0018] Specifically, drainage holes are provided on the top of the outer surface of the drainage tube, and the drainage holes are distributed in a linear array. Under the action of extrusion, the pesticide solvent inside the drainage tube is discharged outward through the drainage holes and contacts the outer surface of fruits and vegetables.

[0019] Furthermore, the drainage tube and the blocking tube are both made of soft rubber material, and there is a distance between the two ends of the blocking tube in the left-right direction. Deformation of the drainage tube will squeeze the blocking tube, causing the blocking tube to be blocked.

[0020] Specifically, the solution in the drainage tube cannot flow out through the drainage hole without being squeezed.

[0021] Furthermore, the liquid absorption device includes a first connecting plate and a matching groove, the first connecting plate and the matching groove are distributed in a linear array, and a liquid absorption sponge is arranged on the top of the first connecting plate, and the liquid absorption sponge can absorb the pesticide solvent on the surface of fruits and vegetables.

[0022] Specifically, the liquid-absorbing sponge is clamped with the T-shaped slide rail, and the matching groove is arranged at a position between the first connecting plates.

[0023] Furthermore, the reaction device includes a mounting sleeve, which is sleeved with the leakage hole, and a liquid inlet groove is fixedly installed at the bottom of the mounting sleeve. The pesticide solvent discharged after the liquid-absorbing sponge is squeezed enters the interior of the liquid inlet groove through the leakage hole and the mounting sleeve.

[0024] Specifically, a cover is provided at the bottom of the liquid inlet tank, and a detection plate is fixedly installed at the top of the cover located inside the liquid inlet tank. The detection plate changes color after contacting with the pesticide components in the pesticide solvent.

[0025] Furthermore, the distance between the outer side of the drainage tube and the outer surface of the liquid storage rolling bin is greater than the distance between the outer side of the first connecting plate and the outer surface of the liquid storage rolling bin. When the drainage tube is squeezed and deformed, it will not affect the liquid absorption sponge, ensuring that the liquid absorption sponge can absorb the pesticide solvent normally.

[0026] This application has the following beneficial effects.

[0027] The device can simplify traditional detection methods, automatically complete the collection of pesticide solvents, and concentrate them inside the liquid inlet tank so that the detection board can detect the pesticides in the solution. In addition, when the discharge pipe is squeezed, the blocking pipe can be automatically closed to prevent the pesticide solution inside the discharge pipe from flowing back to the liquid storage tank. At the same time, the first connecting plate can protect the liquid-absorbing sponge to prevent the liquid-absorbing sponge from being squeezed when the discharge pipe is squeezed, causing it to be unable to absorb water normally. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings, which constitute a part of the specification, illustrate the embodiments disclosed in the present application and, together with the description, serve to explain the principles disclosed in the present application.

[0029] The present disclosure may be more clearly understood from the following detailed description with reference to the accompanying drawings, in which:

[0030] Figure 1 It is a schematic diagram of the structure of the present invention;

[0031] Figure 2 This is the external structure diagram of the present invention;

[0032] Figure 3 It is a cross-sectional view of the external structure of the present invention;

[0033] Figure 4 This is a diagram of the structural rolling device of the present invention;

[0034] Figure 5 This is a main body diagram of the structural rolling device of the present invention;

[0035] Figure 6 This is a front view of the main body of the rolling device of the present invention;

[0036] Figure 7 This is a diagram of the structure of the liquid discharge device of the present invention;

[0037] Figure 8 It is a cross-sectional view of the liquid discharge device of the present invention;

[0038] Fig. 9 This is a diagram of the liquid absorbing device of the present invention;

[0039] Fig.10 It is a diagram of the structural reaction device of the present invention;

[0040] Fig.11 It is a cross-sectional view of the structural reaction device of the present invention.

[0041] In the figure; 10, housing; 11, handle; 12, right shaft hole; 13, right through hole; 14, connecting arm; 15, circular inner plate; 16, left shaft hole; 17, rolling device; 171, liquid storage rolling bin; 172, right connecting shaft; 173, threaded sealing plug; 174, left connecting shaft; 175, side plate; 176, top seat; 177, limit ring; 178, T-type slide rail; 179, drainage hole; 180, drainage device; 1801, drainage Tube; 1802, liquid guide tube; 1803, liquid discharge hole; 181, liquid suction device; 1811, first connecting plate; 1812, matching groove; 1813, liquid suction sponge; 18, bottom groove; 19, liquid leakage hole; 101, reaction device; 1011, installation sleeve; 1012, liquid inlet groove; 1013, sealing cover; 1014, detection plate; 102, annular rubber plug; 20, second connecting plate; 21, extrusion rod; 22, extrusion seat. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0043] A device for detecting pesticide residues in fruits and vegetables.

[0044] See also Figure 1-Figure 4 , a shell 10, a handle 11 is fixedly installed on the top of the shell 10, a right axis hole 12 is opened on the right side of the shell 10, and a right through hole 13 is opened on the left side of the shell 10. The internal situation of the shell 10 can be observed through the right through hole 13, and the liquid suction device 181 can be disassembled and replaced.

[0045] See also Figure 1-Figure 3 A connecting arm 14 is provided on the left side of the inner wall of the outer shell 10 near the right through hole 13. The connecting arms 14 are distributed in a circular array. A circular inner plate 15 is fixedly installed at one end of the connecting arm 14. A left axial hole 16 is opened on one side of the circular inner plate 15. A rolling device 17 is provided in a common movable sleeve inside the right axial hole 12 and the left axial hole 16.

[0046] See also Figure 1-Figure 3 A bottom groove 18 is formed at the bottom of the housing 10 so that the rolling device 17 inside can contact the fruits and vegetables to be tested.

[0047] See also Figure 1-Figure 3 A leakage hole 19 is provided at the bottom of the shell 10 on the right side of the bottom groove 18, and a reaction device 101 is clamped inside the leakage hole 19. An annular rubber plug 102 is sleeved on the left side of the shell 10 on the outside of the circular inner plate 15.

[0048] See also Figure 1-Figure 3 , a second connecting plate 20 , an extrusion rod 21 is fixedly installed on one side of the second connecting plate 20 near the outer side, the extrusion rods 21 are distributed in a circular array, and an extrusion seat 22 is fixedly installed at one end of the extrusion rod 21 .

[0049] See also Figure 4 The rolling device 17 includes a liquid storage rolling chamber 171, and the interior of the liquid storage rolling chamber 171 carries a pesticide solvent.

[0050] See also Figure 4-Figure 6 A right connecting shaft 172 is fixedly installed on the right end of the liquid storage rolling bin 171. The right connecting shaft 172 is connected to the interior of the liquid storage rolling bin 171. One end of the right connecting shaft 172 is provided with a threaded sealing plug 173 through a threaded sleeve. The threaded sealing plug 173 seals the right connecting shaft 172 to prevent the pesticide solvent inside the liquid storage rolling bin 171 from leaking.

[0051] See also Figure 4-Figure 6A left connecting shaft 174 is fixedly installed on the left end of the liquid storage rolling bin 171, and the right connecting shaft 172 and the left connecting shaft 174 are respectively sleeved on the right shaft hole 12 and the left shaft hole 16, and a side plate 175 is fixedly installed on the outer surface of the liquid storage rolling bin 171 near the two ends, and a top seat 176 is fixedly installed on the inner side of the side plate 175 near the top, and a limit ring 177 is provided on the right side of the outer surface of the liquid storage rolling bin 171 near the side plate 175, and the limit ring 177 serves as a limit stop.

[0052] See also Figure 4-Figure 6 A T-shaped slide rail 178 is fixedly installed on the outer surface of the liquid storage rolling bin 171 between the side panels 175, and a drainage hole 179 is provided in the middle of the outer surface of the liquid storage rolling bin 171 between the T-shaped slide rails 178. The pesticide solvent inside the liquid storage rolling bin 171 is discharged outwardly through the drainage hole 179 and enters the interior of the drainage device 180.

[0053] See also Figure 4-Figure 6 , the side plates 175, the T-shaped slide rails 178 and the drainage holes 179 are all arranged in a circular array;

[0054] See also Figure 4-Figure 6 The outer side of the top seat 176 is provided with a liquid discharge device 180, and the outer side of the T-shaped slide rail 178 is clamped with a liquid suction device 181;

[0055] See also Figure 3-Figure 4 The squeezing rod 21 corresponds to the liquid suction device 181 one by one.

[0056] See also Figure 6-Figure 8 The drainage device 180 includes a drainage pipe 1801, both ends of which are fixedly mounted on the top seat 176 respectively, and a liquid guide pipe 1802 is arranged near the middle of the bottom of the outer surface of the drainage pipe 1801, and the liquid guide pipe 1802 is connected to the drainage pipe 1801, and one end of the liquid guide pipe 1802 is connected to the drainage hole 179, and the pesticide solvent inside the liquid storage rolling bin 171 enters the interior of the drainage pipe 1801 through the drainage hole 179 and the liquid guide pipe 1802.

[0057] See also Figure 7-Figure 8 A drainage hole 1803 is provided at the top of the outer surface of the drainage tube 1801, and the drainage holes 1803 are distributed in a linear array. Under the action of squeezing, the pesticide solvent inside the drainage tube 1801 is discharged outward through the drainage holes 1803 and contacts the outer surface of fruits and vegetables.

[0058] See also Figure 6-Figure 8Since the material of the liquid guiding tube 1802 is soft rubber material, there is a distance between the two ends of the liquid guiding tube 1802 in the left and right directions, so that when the drainage tube 1801 is squeezed, the drainage tube 1801 will squeeze the liquid guiding tube 1802 at the same time. Under this action, the liquid guiding tube 1802 is closed. When the drainage tube 1801 is deformed, the pesticide solvent inside will not flow back to the inside of the liquid storage rolling bin 171 through the liquid guiding tube 1802, thereby ensuring that the drainage tube 1801 can be stably discharged through the drainage hole 1803 after being squeezed, so that the pesticide solvent can stably contact the surface of the fruit and vegetable to be tested, thereby improving the stability of the device.

[0059] See also Figure 7-Figure 8 The drainage tube 1801 and the catheter 1802 are both made of soft rubber material. There is a gap between the two ends of the catheter 1802 in the left and right directions. The deformation of the drainage tube 1801 will squeeze the catheter 1802, causing the catheter 1802 to be blocked.

[0060] See also Figure 7-Figure 8 , the solution inside the drainage tube 1801 cannot flow out through the drainage hole 1803 without being squeezed.

[0061] See also Figure 7-Figure 8 Since most fruits and vegetables are irregularly spherical in shape, and different types of fruits and vegetables have different volumes, when testing larger fruits and vegetables, the curvature of the outer surface of the fruits and vegetables is smaller. When the drainage tube 1801 is squeezed, the greater the deformation of the drainage tube 1801, the higher the amount of agricultural solvent discharged through the drainage hole 1803. When testing smaller fruits and vegetables, the curvature of the outer surface of the fruits and vegetables is larger. When the drainage tube 1801 is squeezed, the smaller the deformation of the drainage tube 1801, the lower the amount of pesticide solvent discharged through the drainage hole 1803. Thus, the amount of pesticide solvent discharged is proportional to the volume of the fruits and vegetables to be tested, and the waste of pesticide solvent is avoided while ensuring that the pesticide solvent can completely cover the fruits and vegetables to be tested, thereby improving the practicality of the device.

[0062] See also Fig. 9 The liquid absorption device 181 includes a first connecting plate 1811 and a matching groove 1812. The first connecting plate 1811 and the matching groove 1812 are distributed in a linear array. A liquid absorption sponge 1813 is arranged on the top of the first connecting plate 1811. The liquid absorption sponge 1813 can absorb the pesticide solvent on the surface of fruits and vegetables.

[0063] See also Figure 6 and Fig. 9 The liquid-absorbing sponge 1813 is engaged with the T-shaped slide rail 178 , and the matching groove 1812 is arranged between the first connecting plates 1811 .

[0064] See also Figure 6-Figure 9 The distance between the outer side of the drainage tube 1801 and the outer surface of the liquid storage roller bin 171 is greater than the distance between the outer side of the first connecting plate 1811 and the outer surface of the liquid storage roller bin 171, so that the drainage tube 1801 has sufficient space to be squeezed. At the same time, when the drainage tube 1801 is squeezed, the first connecting plate 1811 will protect the liquid absorbent sponge 1813, avoiding the problem that the liquid absorbent sponge 1813 cannot absorb the pesticide solvent normally due to being squeezed during the squeezing of the drainage tube 1801, thereby improving the reliability of the device.

[0065] See also Fig. 9 , multiple first connecting plates 1811 are provided to reduce the length of a single absorbent sponge 1813, and ensure that the absorbent sponge 1813 will not bend or deflect during the squeezing of the absorbent sponge 1813 by the first connecting plates 1811, thereby avoiding the problem that the pesticide solvent absorbed by the absorbent sponge 1813 cannot be squeezed out normally, and further improving the stability of the device.

[0066] See also Figure 1 , Figure 4 , Figure 6 and Fig. 9 Since a matching groove 1812 is provided on the top of the first connecting plate 1811, and the matching groove 1812 cooperates with the T-shaped slide rail 178, the operator can open the annular rubber plug 102 and then pull out the liquid absorption device 181 through 103 to replace and clean the liquid absorption device 181, thereby avoiding the residual pesticide solvent in the liquid absorption sponge 1813 from affecting the detection accuracy, thereby improving the detection accuracy of the device.

[0067] See also Figure 3 and Figure 9-11 The reaction device 101 includes a mounting sleeve 1011, which is sleeved with the leakage hole 19, and a liquid inlet groove 1012 is fixedly installed at the bottom of the mounting sleeve 1011. The pesticide solvent discharged after the liquid-absorbing sponge 1813 is squeezed enters the interior of the liquid inlet groove 1012 through the leakage hole 19 and the mounting sleeve 1011.

[0068] See also Figure 10-11 A cover 1013 is provided at the bottom of the liquid inlet tank 1012, and a detection plate 1014 is fixedly installed at the top of the cover 1013 located inside the liquid inlet tank 1012. The detection plate 1014 will change color when it comes into contact with the pesticide components in the pesticide solvent.

[0069] See also Figure 6-Figure 9The distance between the outer side of the drainage tube 1801 and the outer surface of the liquid storage rolling bin 171 is greater than the distance between the outer side of the first connecting plate 1811 and the outer surface of the liquid storage rolling bin 171. When the drainage tube 1801 is squeezed and deformed, it will not affect the liquid absorption sponge 1813, ensuring that the liquid absorption sponge 1813 can absorb the pesticide solvent normally.

[0070] See also Figure 3 , Figure 6 , Figure 8-Figure 11 The operator opens the threaded sealing plug 173 and injects the pesticide solvent into the liquid storage rolling bin 171 through the right connecting shaft 172. After the filling is completed, tighten the threaded sealing plug 173 and keep the right connecting shaft 172 in a sealed state. When the operator holds the handle 11 and the bottom groove 18 faces downward, the pesticide solvent inside the liquid storage rolling bin 171 enters the inside of the drainage pipe 1801 below the liquid storage rolling bin 171 through the drainage holes 179 and the drainage holes 1803 under the action of gravity. The operator moves the device to the position where the drainage pipe 1801 contacts the fruits and vegetables to be tested, and applies a certain pressure. At this time, the drainage pipe 1801 is deformed, so that the pesticide solvent inside is discharged through the drainage holes 1803 and falls on the surface of the fruits and vegetables to be tested. As the operator pushes the device, the rolling device 17 rotates as a whole under the action of friction. Each drainage pipe 1801 continuously discharges the pesticide solvent and drops it on the surface of the fruits and vegetables to be tested. After the pesticide solvent contacts the surface of the fruits and vegetables to be tested, it absorbs the pesticide remaining on the surface of the fruits and vegetables to be tested. Then, the pesticide solvent is contacted and absorbed by the liquid absorbing sponge 1813. After being rolled several times by the rolling device 17, the liquid absorbing sponge 1813 fully absorbs the pesticide solvent. At this time, the operator opens the annular rubber stopper 102 and adjusts the posture of the device so that the right through hole 13 faces upward. The second connecting plate 20 is used, and the squeezing rod 21 is inserted into the inside of the handle 11 through the right through hole 13. Since the squeezing rod 21 corresponds to the liquid absorbing device 181 one by one, during the insertion process, the squeezing seat 22 squeezes the liquid absorbing device 181, so that the first connecting plate 1811 slides along the surface of the T-shaped slide rail 178. At the same time, the space between the first connecting plates 1811 The distance between the test plate and the test board 1014 is reduced, and the liquid absorbing sponge 1813 is squeezed to discharge the absorbed pesticide solvent. The pesticide solvent enters the liquid inlet groove 1012 through the leakage hole 19 and the installation sleeve 1011 under the action of gravity, so that the detection plate 1014 is completely immersed in the pesticide solvent. The detection plate 1014 will react with the pesticide dissolved in the pesticide solvent to change color. At this time, the operator draws out the cover 1013 and judges whether the pesticide residue on the fruits and vegetables exceeds the standard according to the degree of color change of the detection plate 1014. In the traditional detection process, the agricultural solvent is applied to the surface of the fruits and vegetables to be detected, and the pesticide solvent on the surface of the fruits and vegetables is collected and detected. Compared with the traditional detection method, the detection method of the device is more convenient to operate, and the surface of the fruits and vegetables to be detected can be completely detected, so that the detection result is more accurate, and the practicality of the device is improved.

[0071] The method of use of the present invention is as follows:

[0072] During use, the operator opens the threaded sealing plug 173 and injects the pesticide solvent into the liquid storage rolling bin 171 through the right connecting shaft 172. After the filling is completed, the threaded sealing plug 173 is tightened and the right connecting shaft 172 is kept in a sealed state. When the operator holds the handle 11 and the bottom groove 18 faces downward, the pesticide solvent inside the liquid storage rolling bin 171 enters the inside of the drainage pipe 1801 below the liquid storage rolling bin 171 through the drainage holes 179 and the drainage holes 1803 under the action of gravity. The operator moves the device to the position where the drainage pipe 1801 contacts the fruits and vegetables to be tested, and applies a certain pressure. At this time, the drainage pipe 1801 is deformed, so that the pesticide solvent inside is discharged through the drainage holes 1803 and falls on the surface of the fruits and vegetables to be tested. As the operator pushes the device, the rolling device 17 rotates as a whole under the action of friction. Each drainage pipe 1801 continuously discharges the pesticide solvent and drops it on the surface of the fruits and vegetables to be tested. After the pesticide solvent contacts the surface of the fruits and vegetables to be tested, it absorbs the pesticide remaining on the surface of the fruits and vegetables to be tested. Then the pesticide solvent is contacted and absorbed by the liquid absorbing sponge 1813. After being rolled by the rolling device 17 for many times, the liquid absorbing sponge 1813 will fully absorb the pesticide solvent. Then the operator installs the reaction device 101 below the leakage hole 19. At this time, the operator opens the annular rubber plug 102 and adjusts the device posture to the right. The hole 13 faces upward, and the second connecting plate 20 is used, and the squeezing rod 21 is inserted into the interior of the handle 11 through the right through hole 13. Since the squeezing rod 21 corresponds to the liquid absorbing device 181 one by one, during the insertion process, the squeezing seat 22 squeezes the liquid absorbing device 181, so that the first connecting plate 1811 slides along the surface of the T-shaped slide rail 178, and at the same time, the spacing between the first connecting plates 1811 is reduced, and the liquid absorbing sponge 1813 is squeezed to discharge the absorbed pesticide solvent, and the pesticide solvent passes through the leakage hole 19 and the installation sleeve 1 under the action of gravity. 011 enters the interior of the liquid inlet tank 1012, so that the detection plate 1014 is completely immersed in the pesticide solvent. The detection plate 1014 will react with the pesticide dissolved in the pesticide solvent to change color. At this time, the operator pulls out the cover 1013 and judges whether the pesticide residue on the fruits and vegetables exceeds the standard according to the degree of color change of the detection plate 1014. Since the material of the liquid guide tube 1802 is soft rubber material, there is a gap between the two ends of the liquid guide tube 1802 in the left and right directions, so that when the drainage tube 1801 is squeezed, the drainage tube 1801 will squeeze the liquid guide tube 1802 at the same time. Under this action, the liquid guide tube 1802 is closed. When the drainage tube 1801 is deformed, the pesticide solvent inside will not flow back to the inside of the liquid storage tank 171 through the liquid guide tube 1802. Since the distance between the outside of the drainage tube 1801 and the outer surface of the liquid storage tank 171 is greater than the distance between the outside of the first connecting plate 1811 and the outer surface of the liquid storage tank 171, the drainage tube 1801 has sufficient space to be squeezed. At the same time, when the drainage tube 1801 is squeezed,The first connecting plate 1811 can protect the liquid absorbing sponge 1813. Since a plurality of first connecting plates 1811 are arranged inside the liquid absorbing device 181, the length of a single liquid absorbing sponge 1813 can be reduced, and the liquid absorbing sponge 1813 can be ensured not to bend or deflect during the squeezing of the liquid absorbing sponge 1813 by the first connecting plate 1811. Since a matching groove 1812 is arranged on the top of the first connecting plate 1811, and the matching groove 1812 cooperates with the T-shaped slide rail 178, the operator can open the annular rubber plug 102, and then pull out the liquid absorbing device 181 through 103, so as to replace and clean the liquid absorbing device 181. Since most fruits and vegetables have irregular shapes, The spherical shape of the fruit and vegetable is different, and the volumes of different types of fruits and vegetables are also different. When testing fruits and vegetables with larger volumes, the curvature of the outer surface of the fruit and vegetable is smaller. When the drainage tube 1801 is squeezed, the greater the deformation of the drainage tube 1801, the higher the amount of agricultural solvent discharged through the drainage hole 1803. When testing fruits and vegetables with smaller volumes, the curvature of the outer surface of the fruit and vegetable is larger. When the drainage tube 1801 is squeezed, the smaller the deformation of the drainage tube 1801, the lower the amount of pesticide solvent discharged through the drainage hole 1803. Thus, the amount of pesticide solvent discharged can be proportional to the volume of the fruit and vegetable to be tested, and the waste of pesticide solvent can be avoided under the premise of ensuring that the pesticide solvent can completely cover the fruit and vegetable to be tested.

Claims

1. A device for detecting pesticide residues in fruits and vegetables, characterized in that: include: A housing (10), a handle (11) is fixedly mounted on the top of the housing (10), a right axial hole (12) is opened on the right side of the housing (10), a right through hole (13) is opened on the left side of the housing (10), a connecting arm (14) is arranged at a position close to the right through hole (13) on the left side of the inner wall of the housing (10), the connecting arms (14) are distributed in a circular array, a circular inner plate (15) is fixedly mounted on one end of the connecting arm (14), and one side of the circular inner plate (15) is opened A left shaft hole (16) is provided, the right shaft hole (12) and the left shaft hole (16) are movably sleeved with a rolling device (17), a bottom groove (18) is provided at the bottom of the housing (10), a leakage hole (19) is provided at a position on the right side of the bottom groove (18) at the bottom of the housing (10), a reaction device (101) is clamped inside the leakage hole (19), and an annular rubber plug (102) is sleeved at a position on the left side of the housing (10) on the outside of the circular inner plate (15); A second connecting plate (20), wherein an extrusion rod (21) is fixedly mounted on one side of the second connecting plate (20) at a position close to the outer side, the extrusion rods (21) are distributed in a circular array, and an extrusion seat (22) is fixedly mounted on one end of the extrusion rod (21); The rolling device (17) comprises a liquid storage rolling bin (171), a right connecting shaft (172) being fixedly mounted on the right end of the liquid storage rolling bin (171), the right connecting shaft (172) being connected to the interior of the liquid storage rolling bin (171), one end of the right connecting shaft (172) being provided with a threaded sealing plug (173) via a threaded sleeve, a left connecting shaft (174) being fixedly mounted on the left end of the liquid storage rolling bin (171), the right connecting shaft (172) and the left connecting shaft (174) being sleeved on the right shaft hole (12) and the left shaft hole (16) respectively, the liquid storage rolling bin (171) A side plate (175) is fixedly mounted on the outer surface of the liquid storage tank (171) at positions near both ends, a top seat (176) is fixedly mounted on the inner side of the side plate (175) at a position near the top, a limit ring (177) is provided on the right side of the outer surface of the liquid storage tank (171) at a position near the side plate (175), a T-shaped slide rail (178) is fixedly mounted on the outer surface of the liquid storage tank (171) at a position between the side plates (175), and a drainage hole (179) is provided in the middle of the outer surface of the liquid storage tank (171) and at a position between the T-shaped slide rails (178). The side plates (175), T-shaped slide rails (178) and drainage holes (179) are all distributed in a circular array; The outer side of the top seat (176) is provided with a liquid discharge device (180), and the outer side of the T-shaped slide rail (178) is clamped with a liquid suction device (181); The squeezing rod (21) corresponds to the liquid suction device (181) in a one-to-one manner; The drainage device (180) comprises a drainage pipe (1801), the two ends of which are fixedly sleeved on the top seat (176) respectively; a blocking pipe (1802) is arranged at a position close to the middle of the bottom of the outer surface of the drainage pipe (1801); the blocking pipe (1802) is connected to the drainage pipe (1801); one end of the blocking pipe (1802) is connected to the drainage hole (179); drainage holes (1803) are arranged at the top of the outer surface of the drainage pipe (1801); the drainage holes (1803) are distributed in a linear array; the drainage pipe (1801) and the blocking pipe (1802) are both made of soft rubber material; there is a gap between the two ends of the blocking pipe (1802) in the left-right direction; the solution in the drainage pipe (1801) cannot flow out through the drainage hole (1803) without being squeezed.

2. A device for detecting pesticide residues in fruits and vegetables according to claim 1, characterized in that: The liquid absorbing device (181) comprises a first connecting plate (1811) and a matching groove (1812), wherein the first connecting plate (1811) and the matching groove (1812) are both distributed in a linear array, a liquid absorbing sponge (1813) is arranged on the top of the first connecting plate (1811), the liquid absorbing sponge (1813) is snap-connected to the T-shaped slide rail (178), and the matching groove (1812) is arranged at a position between the first connecting plates (1811).

3. The device for detecting pesticide residues in fruits and vegetables according to claim 1, characterized in that: The reaction device (101) comprises a mounting sleeve (1011), the mounting sleeve (1011) being sleeved with the liquid leakage hole (19), a liquid inlet groove (1012) being fixedly mounted on the bottom of the mounting sleeve (1011), a sealing cover (1013) being sleeved on the bottom of the liquid inlet groove (1012), and a detection plate (1014) being fixedly mounted on the top of the sealing cover (1013) at a position inside the liquid inlet groove (1012).

4. A device for detecting pesticide residues in fruits and vegetables according to claim 3, characterized in that: The distance between the outer side of the liquid discharge pipe (1801) and the outer surface of the liquid storage rolling bin (171) is greater than the distance between the outer side of the first connecting plate (1811) and the outer surface of the liquid storage rolling bin (171).

Images