A portable pesticide residue detection device and method

Abstract

The present invention relates to the technical field of pesticide detection, and specifically to a portable pesticide residue detection device and method, comprising a detection plate, a cover plate rotatably mounted on the detection plate, a plurality of observation slots being provided on the cover plate, a placement table arranged on the detection plate, a folding assembly, the folding assembly being movably mounted on the placement table, a control drip assembly, the control drip assembly being fixedly mounted on the observation slot, and a processing drip assembly, the processing drip assembly being movably mounted on the observation slot, capable of eluting a sample and titrating a detection liquid onto a detection card. The portable pesticide residue detection device and method are different from the prior art in that a blank control eluent can be held by the control drip assembly, and a sample and an eluent can be conveniently mixed by the processing drip assembly, and no excessive manual operation is required, so the device is very convenient to use and also very convenient to carry.

Description

Technical Field

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

[0002] As food safety issues have received more and more attention in China, the problem of pesticide residues in fruits and vegetables has also received great attention. The main pesticide residues in fruits and vegetables are organophosphorus and carbamates, two major types of pesticides with large dosages and high toxicity. As food safety issues have received more and more attention in China, the problem of pesticide residues in fruits and vegetables has also received great attention.

[0003] In the field of rapid testing of pesticides, test cards and eluents are needed. The eluent needs to be mixed with the sample during testing. Some utensils and tools for absorbing liquids are needed during the mixing process. However, these utensils and tools are generally small in size and inconvenient to carry. When going out for testing, you also need to carry a box, which is very troublesome and does not meet the purpose of portability. For this reason, we propose a portable pesticide residue detection device and method. Summary of the invention

[0004] A technical problem to be solved by the present application is that existing detection devices include some tools that are inconvenient to carry.

[0005] In order to solve the above technical problems, the embodiment of the present application provides a portable pesticide residue detection device, including a detection plate, on which a cover plate is rotatably mounted, and a plurality of observation slots are provided, and further comprising:

[0006] A placement table, which is arranged on the detection plate and is used to place the detection card;

[0007] A folding component, which is movably arranged on the placement table and can drive the test card to fold so that the two ends thereof fit together for reaction;

[0008] A control dropper assembly, which is fixedly disposed on the observation tank and is capable of titrating the eluent onto the test card;

[0009] The processing and dripping component is movably installed on the observation tank, and can elute the sample and titrate the detection liquid to the detection card.

[0010] In some embodiments, the placement table includes a heating block fixedly arranged on the detection plate, a slot for inserting the end of the detection card is fixedly arranged at the bottom of the heating block, an inclined plate is arranged at the other end of the heating block, and a horizontal plate is fixedly arranged on the cover plate. After the cover plate is buckled with the detection plate, the horizontal plate presses against the middle section of the detection card;

[0011] The folding assembly comprises a folding plate movably arranged in the inclined plate, a side rod is arranged at the end of the folding plate, the side rod movably penetrates the detection plate and a connecting rod is arranged at the end.

[0012] In some embodiments, the control dropper assembly includes a control box fixedly mounted on an observation tank, a water tank 1 being fixedly mounted in the control box, the eluent being contained in the water tank 1, a blocking tube capable of controlling the opening and closing of the bottom of the water tank 1 being disposed at the bottom of the water tank 1, and a control component for controlling the switching state of the blocking tube being disposed on the control box.

[0013] In some embodiments, the blocking pipe includes a fixed pipe fixedly arranged at the bottom of the water tank, a fixed ring is fixedly arranged in the fixed pipe, a plurality of fixed rods are fixedly arranged on the fixed ring, a moving block is movably arranged in the fixed pipe, the top of the moving block can be inserted into the fixed ring, and a plurality of through grooves for the fixing rods to be inserted are provided on the moving block, a guide block is fixedly arranged at the bottom end of the moving block, and a plurality of guide grooves are provided on the guide block;

[0014] The control component includes a control rod movably arranged in the control box, a connecting rod is arranged at the bottom end of the control rod, a control spring is arranged on the connecting rod, two ends of the control spring are respectively fixedly connected to the connecting rod and the bottom of the water tank, an outer ring is fixedly arranged at the outer end of the moving block, and a notch is opened at the end of the connecting rod to be plugged into the outer ring.

[0015] In some embodiments, the dripping treatment assembly includes a treatment box movably mounted on the observation trough, a water tank 2 is fixedly mounted in the treatment box, a liquid outlet pipe is arranged at the bottom of the water tank 2, a valve assembly is arranged in the liquid outlet pipe, a mounting plate is fixedly mounted in the treatment box, the mounting plate is located at the bottom of the liquid outlet pipe and a through hole is opened on the mounting plate, a connecting cover is slidably mounted on the mounting plate, a placement box is threadedly mounted on the connecting cover, a connecting pipe is arranged at the bottom of the placement box, the connecting pipe structure is the same as the blocking pipe, an extension rod is fixedly mounted on the inner wall of the treatment box, a connecting spring is arranged on the extension rod, a connecting frame is arranged at the bottom of the connecting spring, an end of the connecting frame is connected to the bottom of the connecting pipe, a moving part is arranged in the treatment box, the moving part is transmission-connected to the connecting cover, and an auxiliary rod is arranged in the treatment box.

[0016] In some embodiments, the valve assembly includes a baffle ball rotatably disposed in a liquid outlet pipe, a channel being opened in the baffle ball, an L-shaped rod rotatably disposed on the liquid outlet pipe, one end of the L-shaped rod rotatably passes through the liquid outlet pipe and is fixedly connected to the baffle ball, and the other end is provided with a pull rope, a track is fixedly disposed in the processing box, a sliding rod is slidably disposed in the track, one end of the pull rope is fixedly connected to the sliding rod, a reset spring is disposed in the track, and both ends of the reset spring are respectively fixedly connected to the sliding rod and the bottom of the track.

[0017] In some embodiments, the movable part includes a placement rod fixedly arranged on the inner wall of the processing box, a rotating disk is rotatably installed on the placement rod, a movable rod is rotatably connected to the outer side of the bottom of the rotating disk, the end of the movable rod is rotatably connected to the connecting cover, an extrusion spring is arranged on the mounting plate, and the two ends of the extrusion spring are respectively fixedly connected to the mounting plate and the connecting cover, a fixed shaft is fixedly arranged on the rotating disk, the fixed shaft rotatably passes through the placement rod, a fixed sleeve is movably sleeved on the outer side of the fixed shaft, a push rod is fixedly arranged on the outer side of the fixed sleeve, a spiral groove is opened on the outer side of the fixed shaft, and a protrusion that slides with the spiral groove is fixedly arranged in the fixed sleeve, a compression spring is arranged on the placement rod, and the two ends of the compression spring are respectively fixedly connected to the placement rod and the push rod.

[0018] In some embodiments, the auxiliary rod movably penetrates the processing box and a pressure rod is fixedly connected to the bottom end.

[0019] In some embodiments, a support rod is fixedly provided inside the placement box, the support rod is located at the connection point between the placement box and the connecting pipe, and a support ring is fixedly connected to the end of the support rod.

[0020] In some embodiments, a detection method of a portable pesticide residue detection device comprises the following steps:

[0021] S1: Select vegetable samples, remove the soil on the surface, cut them into pieces of about 1 cm, and put them into a storage box;

[0022] S2: Place the test card on a heating block for preheating;

[0023] S3: Cover the cover plate, release the eluent in the water tank 2 into the placement box, and drive the placement box to move back and forth through the moving part to mix the eluent with the vegetable sample;

[0024] S4; dripping the eluent onto one test card as a blank control, titrating the eluent of the mixed vegetable sample onto the other test card, and then folding the test card with the folding assembly;

[0025] S5: After the reaction is finished, observe the color of the test card to determine the pesticide residue situation.

[0026] The present invention has at least the following beneficial effects:

[0027] Different from the prior art, the control dropper component can hold the blank control eluent, and the sample and the eluent can be conveniently mixed by processing the dropper component without excessive manual operation. It is very convenient to use and also very convenient to carry.

[0028] Integrating the titration eluent and the structure for mixing the sample and the eluent into the processing titration component can avoid the situation in the prior art where other tools need to be carried for detection, thereby increasing its portability and making the operation easier. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0030] Figure 2 This is a schematic diagram of the overall structure of the cover plate of the present invention in an open state;

[0031] Figure 3 For the present invention Figure 1 Schematic diagram of the side section structure;

[0032] Figure 4 This is a schematic diagram of the structure of the detection board of the present invention;

[0033] Figure 5 This is a schematic diagram of the structure of a control dropper assembly of the present invention;

[0034] Figure 6 This is a schematic diagram of the plugging tube structure of the present invention;

[0035] Figure 7 This is a schematic diagram of the cross-sectional structure of the plugging tube of the present invention;

[0036] Figure 8 This is a schematic diagram of the structure of the dripping component for processing of the present invention;

[0037] Fig. 9 For the present invention Figure 8 Schematic diagram of local structure;

[0038] Fig.10 This is a schematic diagram of the structure of the valve assembly of the present invention;

[0039] Fig.11 It is a schematic diagram of the structure of the moving part of the present invention;

[0040] Fig.12 This is a schematic diagram of the structure inside the box in the second embodiment of the present invention.

[0041] In the figure: 1-detection plate; 2-cover plate; 3-observation slot; 4-placement table; 41-heating block; 42-slot; 43-inclined plate; 44-horizontal plate; 5-folding assembly; 51-folding plate; 52-side rod; 53-connecting rod; 6-control drip assembly; 61-control box; 62-water tank one; 7-treatment drip assembly; 71-treatment box; 72-water tank two; 73-liquid outlet pipe; 74-installation plate; 75-connecting cover; 76-placement box; 77-connecting pipe; 78-extension rod; 79-connecting spring; 710-connecting frame; 8-blocking pipe; 81-fixing pipe; 82-fixing ring; 83-fixing rod; 84-moving block; 85 -through groove; 86-guide block; 87-guide groove; 9-control member; 91-control rod; 92-connecting rod; 93-control spring; 94-outer ring; 10-valve assembly; 101-block ball; 102-L-shaped rod; 103-pull rope; 104-track; 105-sliding rod; 106-reset spring; 11-moving member; 111-placing rod; 112-rotating disk; 113-movable rod; 114-extrusion spring; 115-fixed shaft; 116-fixing sleeve; 117-thrust rod; 118-spiral groove; 119-bump; 120-compression spring; 12-auxiliary rod; 13-pressure rod; 14-support rod; 15-support ring. DETAILED DESCRIPTION

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

[0043] Embodiment 1:

[0044] See also Figure 1-11 The present invention provides a technical solution: a portable pesticide residue detection device, comprising a detection plate 1, a cover plate 2 is rotatably mounted on the detection plate 1, a plurality of observation slots 3 are provided on the cover plate 2, and a placement table 4 is arranged on the detection plate 1, the placement table 4 is used to place a detection card, a folding component 5 is movably arranged on the placement table 4, the folding component 5 can drive the detection card to fold so that the two ends thereof can be fitted together for reaction, a control titration component is fixedly arranged on any one of the observation slots 3, and a treatment titration component is movably mounted on any one of the remaining observation slots 3, which can elute the sample and titrate the detection liquid into the detection card.

[0045] The placement table 4 includes a heating block 41 fixedly arranged on the detection plate 1. The heating block 41 can realize electric heating to provide a suitable temperature for the reaction between the eluent and the detection card. A slot 42 for inserting the end of the detection card is fixedly arranged at the bottom of the heating block 41. An inclined plate 43 is arranged at the other end of the heating block 41. A horizontal plate 44 is fixedly arranged on the cover plate 2. After the cover plate 2 and the detection plate 1 are buckled, the horizontal plate 44 presses against the middle section of the detection card.

[0046] The folding assembly 5 includes a folding plate 51 movably arranged in the inclined plate 43, a side rod 52 is arranged at the end of the folding plate 51, the side rod 52 movably passes through the detection plate 1 and a connecting rod 53 is arranged at the end. Pressing the connecting rod 53 drives the side rod 52 and the folding plate 51 to move. The folding plate 51 can squeeze one end of the detection card to fold it, thereby making the two ends of the detection card contact and react to show color.

[0047] The control dropper assembly 6 includes a control box 61 fixedly arranged on the observation tank 3, a water tank 62 fixedly arranged in the control box 61, the eluent is contained in the water tank 62, a blocking tube 8 capable of controlling the conduction and closing of the bottom of the water tank 62 is arranged at the bottom of the water tank 62, and a control component 9 for controlling the switching state of the blocking tube 8 is arranged on the control box 61.

[0048] The plugging pipe 8 includes a fixed pipe 81 fixedly arranged at the bottom of the water tank 62, a fixed ring 82 is fixedly arranged in the fixed pipe 81, a plurality of fixed rods 83 are fixedly arranged on the fixed ring 82, a moving block 84 is movably arranged in the fixed pipe 81, the top of the moving block 84 can be inserted into the fixed ring 82, and a plurality of through grooves 85 for the fixing rods 83 to be inserted are provided on the moving block 84, a guide block 86 is fixedly arranged at the bottom end of the moving block 84, and a plurality of guide grooves 87 are provided on the guide block 86;

[0049] The top of the moving block 84 is inserted into the fixed ring 82 to make the fixed tube 81 in a sealed state. When the moving block 84 moves downward, the middle part of the fixed ring 82 is connected, and the fixed rod 83 also separates from the through groove 85. At this time, the eluent in the water tank 62 flows from the fixed ring 82 to the through groove 85, and then flows out from the bottom of the moving block 84 through the guide block 86. Similarly, when the moving block 84 moves upward, the moving block 84 blocks the fixed ring 82, and the fixed rod 83 blocks the through groove 85, so that the fixed tube 81 is in a closed state.

[0050] The control member 9 includes a control rod 91 movably arranged in the control box 61, a connecting rod 92 is arranged at the bottom end of the control rod 91, a control spring 93 is arranged on the connecting rod 92, both ends of the control spring 93 are fixedly connected to the connecting rod 92 and the bottom of the water tank 62 respectively, an outer ring 94 is fixedly arranged at the outer end of the moving block 84, and a groove is opened at the end of the connecting rod 92 to be plugged into the outer ring 94. Pressing the control rod 91 can drive the connecting rod 92 to move, and when the connecting rod 92 moves, it drives the moving block 84 to move, thereby controlling the conduction and closing of the fixed tube 81.

[0051] The treatment droplet assembly 7 includes a treatment box 71 movably mounted on the observation tank 3, a water tank 72 is fixedly mounted in the treatment box 71, and the water tank 72 contains the eluent, a liquid outlet pipe 73 is arranged at the bottom of the water tank 72, and a valve assembly 10 is arranged in the liquid outlet pipe 73, a mounting plate 74 is fixedly arranged in the treatment box 71, the mounting plate 74 is located at the bottom of the liquid outlet pipe 73 and a through hole is opened on the mounting plate 74, a connecting cover 75 is slidably arranged on the mounting plate 74, the infusion tube is connected to the through hole, the through hole is connected to the connecting cover 75, and a threaded mounting is arranged on the connecting cover 75 There is a placement box 76, and a connecting pipe 77 is arranged at the bottom of the placement box 76. The structure of the connecting pipe 77 is the same as that of the blocking tube 8. An extension rod 78 is fixedly arranged on the inner wall of the processing box 71, and a connecting spring 79 is arranged on the extension rod 78. A connecting frame 710 is arranged at the bottom of the connecting spring 79. The end of the connecting frame 710 is connected to the bottom of the connecting pipe 77, that is, it is plugged into the outer ring 94 on the moving block 84 inside the connecting pipe 77. A moving part 11 is arranged in the processing box 71, and the moving part 11 is transmission-connected to the connecting cover 75. An auxiliary rod 12 is arranged in the processing box 71.

[0052] The valve assembly 10 includes a baffle ball 101 rotatably arranged in the liquid outlet pipe 73, and a channel is opened in the baffle ball 101. When the baffle ball 101 rotates until the channel is coaxial with the liquid outlet pipe 73, the liquid outlet pipe 73 is connected, and an L-shaped rod 102 is rotatably arranged on the liquid outlet pipe 73. One end of the L-shaped rod 102 rotates to pass through the liquid outlet pipe 73 and is fixedly connected to the baffle ball 101, and the other end is provided with a pull rope 103. Pulling the pull rope 103 can drive the L-shaped rod 102 to rotate and then drive the baffle ball 101 to rotate. A track 104 is fixedly arranged in the processing box 71, and a slide rod 105 is slidably arranged in the track 104. When the slide rod 105 moves, it pulls the pull rope 103 to move, and one end of the pull rope 103 is fixedly connected to the slide rod 105. A return spring 106 is arranged in the track 104, and the two ends of the return spring 106 are respectively fixedly connected to the slide rod 105 and the bottom of the track 104.

[0053] The moving member 11 includes a placement rod 111 fixedly arranged on the inner wall of the processing box 71, a rotating disk 112 is rotatably installed on the placement rod 111, a movable rod 113 is rotatably connected to the outer side of the bottom of the rotating disk 112, and the end of the movable rod 113 is rotatably connected to the connecting cover 75, and an extrusion spring 114 is arranged on the mounting plate 74, and the two ends of the extrusion spring 114 are respectively fixedly connected to the mounting plate 74 and the connecting cover 75. When the rotating disk 112 rotates, it can drive the movable rod 113 to move, and then drive the connecting cover 75 to reciprocate. A fixed shaft 115 is fixedly arranged on the rotating disk 112, and the fixed shaft 115 rotates and penetrates the placement rod 111. A fixed shaft 115 is movably sleeved on the outer side of the fixed shaft 115 Sleeve 116, a push rod 117 is fixedly arranged on the outer side of the fixed sleeve 116, a spiral groove 118 is opened on the outer side of the fixed shaft 115, and a protrusion 119 is fixedly arranged in the fixed sleeve 116 and slidably cooperates with the spiral groove 118. When the fixed sleeve 116 moves on the outer side of the fixed shaft 115, the fixed shaft 115 can be driven to rotate with the cooperation of the protrusion 119 and the spiral groove 118, and then the rotating disk 112 can be driven to rotate. A compression spring 120 is arranged on the placement rod 111, and the two ends of the compression spring 120 are fixedly connected to the placement rod 111 and the push rod 117 respectively. A guide rod is arranged on the placement rod 111, and the guide rod passes through the push rod 117 to limit the rotation of the fixed sleeve 116.

[0054] The auxiliary rod 12 movably penetrates the processing box 71 and is fixedly connected to the pressure rod 13 at the bottom. Rotating the auxiliary rod 12 can drive the pressure rod 13 to rotate. When the pressure rod 13 rotates, its bottom passes over the sliding rod 105, the top rod 117 and the connecting frame 710 in sequence.

[0055] In summary, when in use, first place the test card on the heating block 41 for preheating, then process the vegetable sample into a block of about 1 cm, open the cover 2, then unscrew the placement box 76 from the connecting cover 75, put the vegetable sample into the placement box 76, then thread the placement box 76 on the connecting cover 75, and then cover the cover 2. At this time, it is necessary to mix the eluent with the vegetable sample, rotate the auxiliary rod 12 to drive the pressure rod 13 to rotate, so that the pressure rod 13 rotates to the top of the sliding rod 105, and then press the auxiliary rod 12 to drive the pressure rod 13 to press down, the pressure rod 13 abuts against the sliding rod 105 to drive it to move, the movement of the sliding rod 105 drives the pull rope 103 to move, the pull rope 103 can drive the L-shaped rod 102 to rotate and then drive the blocking ball 101 to rotate, so as to make the liquid outlet pipe 73 conductive, and at this time the eluent in the water tank 72 flows into the placement box 76;

[0056] Furthermore, at this time, the placement box 76 is already filled with eluent, and the eluent needs to be mixed with the vegetable sample. The auxiliary rod 12 is rotated to drive the pressing rod 13 to move above the top rod 117, and then the auxiliary rod 12 is repeatedly pressed to drive the pressing rod 13 to repeatedly squeeze the top rod 117, thereby driving the fixed sleeve 116 to reciprocate on the fixed shaft 115, so that the fixed shaft 115 drives the rotating disk 112 to reciprocate, thereby driving the connecting cover 75 and the placement box 76 installed on the connecting cover 75 to reciprocate on the mounting plate 74, so that the eluent is mixed with the sample;

[0057] Finally, the eluent in the water tank 62 is titrated onto one test card, and the mixed eluent in the placement box 76 is titrated onto another test card. Then, the connecting rod 53 is pressed to drive the side rod 52 and the folding plate 51 to move. The folding plate 51 can squeeze one end of the test card to fold it so that the two ends of the test card contact and react to develop color. After the reaction time is reached, the cover plate 2 is opened to observe the color of the test card to complete the test.

[0058] A detection method of a portable pesticide residue detection device, the steps of which are as follows:

[0059] S1: Select vegetable samples, remove the soil on the surface, cut into pieces of about 1 cm, and put them into the storage box 76;

[0060] S2: placing the test card on the heating block 41 for preheating;

[0061] S3: Cover the cover plate 2, release the eluent in the water tank 2 72 into the placement box 76, and drive the placement box 76 to move back and forth through the moving part 11 to mix the eluent with the vegetable sample.

[0062] S4; dripping the eluent into one test card as a blank control, titrating the eluent of the mixed vegetable sample on another test card, and then folding the test card 5;

[0063] S5: After the reaction is finished, observe the color of the test card to determine the pesticide residue situation.

[0064] Embodiment 2:

[0065] See also Fig.12 The main structure of the first embodiment is the same as that of the second embodiment, except that a support rod 14 is fixedly provided inside the placement box 76, and the support rod 14 is located at the connection point between the placement box 76 and the connecting tube 77. A support ring 15 is fixedly connected to the end of the support rod 14. The support ring 15 and the support rod 14 can prevent the sample from blocking the outlet at the bottom of the placement box 76, thereby facilitating the outflow of the eluent.

[0066] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0067] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A portable pesticide residue detection device, comprising a detection plate (1), on which a cover plate (2) is rotatably mounted, characterized in that: The cover plate (2) is provided with a plurality of observation slots (3), and further comprises: A placement table (4), the placement table (4) being arranged on the detection plate (1) and used for placing the detection card; A folding component (5), wherein the folding component (5) is movably arranged on the placement table (4) and can drive the detection card to be folded so that the two ends thereof are in contact with each other for reaction; A control dropper assembly (6), wherein the control dropper assembly (6) is fixedly arranged on the observation tank (3) and is capable of dropping the eluent onto the test card; A liquid drop processing assembly (7), wherein the liquid drop processing assembly (7) is movably mounted on the observation tank (3) and is capable of performing an elution process on the sample and titrating the detection liquid onto the detection card; The placement table (4) comprises a heating block (41) fixedly arranged on the detection plate (1); a slot (42) for inserting the end of the detection card is fixedly arranged at the bottom end of the heating block (41); an inclined plate (43) is arranged at the other end of the heating block (41); a horizontal plate (44) is fixedly arranged on the cover plate (2); after the cover plate (2) and the detection plate (1) are buckled, the horizontal plate (44) presses against the middle section of the detection card; The folding assembly (5) comprises a folding plate (51) movably arranged in the inclined plate (43), a side rod (52) being arranged at the end of the folding plate (51), the side rod (52) movably passing through the detection plate (1) and a connecting rod (53) being arranged at the end thereof; The control dropper assembly (6) comprises a control box (61) fixedly arranged on the observation tank (3), a water tank (62) fixedly arranged in the control box (61), the water tank (62) containing the eluent, a blocking tube (8) capable of controlling the opening and closing of the bottom of the water tank (62) arranged at the bottom of the water tank (62), and a control element (9) for controlling the switching state of the blocking tube (8) arranged on the control box (61); The blocking pipe (8) comprises a fixed pipe (81) fixedly arranged at the bottom of a water tank (62); a fixed ring (82) is fixedly arranged in the fixed pipe (81); a plurality of fixed rods (83) are fixedly arranged on the fixed ring (82); a moving block (84) is movably arranged in the fixed pipe (81); the top end of the moving block (84) can be inserted into the fixed ring (82); and the moving block (84) is provided with a plurality of through grooves (85) for the fixing rods (83) to be inserted; a guide block (86) is fixedly arranged at the bottom end of the moving block (84); and a plurality of guide grooves (87) are provided on the guide block (86); The control member (9) comprises a control rod (91) movably arranged in the control box (61), a connecting rod (92) being arranged at the bottom end of the control rod (91), a control spring (93) being arranged on the connecting rod (92), two ends of the control spring (93) being fixedly connected to the connecting rod (92) and the bottom of the water tank (62) respectively, an outer ring (94) being fixedly arranged at the outer end of the moving block (84), and a notch for plugging into the outer ring (94) being provided at the end of the connecting rod (92); The treatment drip assembly (7) comprises a treatment box (71) movably mounted on the observation tank (3), a water tank 2 (72) being fixedly mounted in the treatment box (71), a liquid outlet pipe (73) being arranged at the bottom of the water tank 2 (72), a valve assembly (10) being arranged in the liquid outlet pipe (73), a mounting plate (74) being fixedly mounted in the treatment box (71), the mounting plate (74) being located at the bottom of the liquid outlet pipe (73) and having a through hole formed on the mounting plate (74), a connecting cover (75) being slidably mounted on the mounting plate (74), a placing box (76) being threadedly mounted on the connecting cover (75), ), a connecting tube (77) is arranged at the bottom of the placement box (76), the structure of the connecting tube (77) is the same as that of the blocking tube (8), an extension rod (78) is fixedly arranged on the inner wall of the processing box (71), a connecting spring (79) is arranged on the extension rod (78), a connecting frame (710) is arranged at the bottom of the connecting spring (79), the end of the connecting frame (710) is connected to the bottom of the connecting tube (77), a moving part (11) is arranged in the processing box (71), the moving part (11) is transmission-connected to the connecting cover (75), and an auxiliary rod (12) is arranged in the processing box (71).

2. The portable pesticide residue detection device according to claim 1, characterized in that: The valve assembly (10) includes a baffle ball (101) rotatably arranged in a liquid outlet pipe (73), a channel being opened in the baffle ball (101), an L-shaped rod (102) being rotatably arranged on the liquid outlet pipe (73), one end of the L-shaped rod (102) being rotatably passed through the liquid outlet pipe (73) and being fixedly connected to the baffle ball (101), and a pull rope (103) being arranged at the other end, a track (104) being fixedly arranged in the processing box (71), a slide rod (105) being slidably arranged in the track (104), one end of the pull rope (103) being fixedly connected to the slide rod (105), a return spring (106) being arranged in the track (104), and two ends of the return spring (106) being fixedly connected to the slide rod (105) and the bottom of the track (104), respectively.

3. The portable pesticide residue detection device according to claim 2, characterized in that: The movable member (11) comprises a placement rod (111) fixedly arranged on the inner wall of the processing box (71); a rotating disk (112) is rotatably mounted on the placement rod (111); a movable rod (113) is rotatably connected to the outer side of the bottom of the rotating disk (112); an end of the movable rod (113) is rotatably connected to a connecting cover (75); a pressing spring (114) is arranged on the mounting plate (74); two ends of the pressing spring (114) are respectively fixedly connected to the mounting plate (74) and the connecting cover (75); a fixed shaft (115) is fixedly arranged on the rotating disk (112); The fixed shaft (115) rotates and penetrates the placement rod (111); a fixed sleeve (116) is movably sleeved on the outer side of the fixed shaft (115); a push rod (117) is fixedly arranged on the outer side of the fixed sleeve (116); a spiral groove (118) is opened on the outer side of the fixed shaft (115); a protrusion (119) that slidably cooperates with the spiral groove (118) is fixedly arranged inside the fixed sleeve (116); a compression spring (120) is arranged on the placement rod (111); and two ends of the compression spring (120) are respectively fixedly connected to the placement rod (111) and the push rod (117).

4. The portable pesticide residue detection device according to claim 3, characterized in that: The auxiliary rod (12) movably penetrates the processing box (71) and has a pressing rod (13) fixedly connected to its bottom end.

5. The portable pesticide residue detection device according to claim 4, characterized in that: A support rod (14) is fixedly arranged inside the placement box (76), and the support rod (14) is located at the connection point between the placement box (76) and the connecting pipe (77). A support ring (15) is fixedly connected to the end of the support rod (14).

6. The detection method of the portable pesticide residue detection device according to claim 5, wherein the steps are as follows: S1; select vegetable samples, remove the soil on the surface, cut into pieces of about 1 cm, and place them in a storage box (76); S2: placing the test card on a heating block (41) for preheating; S3: Cover the cover plate (2), release the eluent in the water tank (72) into the placement box (76), and drive the placement box (76) to move back and forth through the moving part (11) to mix the eluent with the vegetable sample; S4; dripping the eluent onto one test card as a blank control, titrating the eluent of the mixed vegetable sample onto the other test card, and then folding the test card with the folding component (5); S5: After the reaction is finished, observe the color of the test card to determine the pesticide residue situation.

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