A solid phase extraction device for pesticide residue purification collection

Abstract

The application discloses a solid-phase extraction device for pesticide residue purification and collection, and relates to the field of pesticide residue solid-phase extraction technology.The device comprises a liquid storage assembly, a liquid transfer assembly, a control assembly and an extraction assembly.The liquid storage assembly comprises a liquid storage support disc, and a liquid storage tank is fixedly connected to the upper surface of the liquid storage support disc.The liquid transfer assembly comprises a liquid transfer support disc, and a liquid transfer pipe is fixedly connected to the surface of the liquid transfer support disc.The control assembly comprises a liquid pushing plate and a liquid taking clamping paw.The extraction assembly comprises an extraction support disc and an extraction control block, and an extraction pipe is slidably arranged on the surface of the extraction support disc.The liquid transfer support disc and the liquid storage support disc are synchronously rotated, the liquid transfer pipe sequentially passes through a liquid taking station and a liquid discharging station, the liquid storage tank sequentially passes through the liquid taking station, and when the liquid transfer support disc and the liquid storage support disc rotate for one circle, the extraction support disc is synchronously rotated by 72 degrees, the position of the extraction pipe is switched, batch automatic extraction is facilitated, and the possibility of frequent reagent alternation pollution is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of solid-phase extraction of pesticide residues, and in particular relates to a solid-phase extraction device for purifying and collecting pesticide residues. Background Art

[0002] Solid-phase extraction is a sample pretreatment technology that combines the advantages of liquid-solid extraction and liquid chromatography. It is mainly used for sample separation, purification and concentration. Solid-phase extraction of samples containing pesticide residues facilitates the enrichment, separation and purification of pesticide residues in samples, making it convenient for measurement and detection. Common solid-phase extraction operations generally include four steps: activation, loading, elution and washing. At the same time, multiple elution operations facilitate the evolution of substances in the sample liquid to avoid the influence of residual debris on relevant data.

[0003] Common solid-phase extraction devices for pesticide residues in samples convert the sample into a sample reagent and sequentially add an activator, sample reagent, eluent, and elutant to the extraction tube using a pipette. During the application process, different pipettes are required for liquid collection and reagent transfer and addition, making the operation cumbersome and prone to misalignment, which can lead to cross-contamination. To address this issue, we provide a solid-phase extraction device for pesticide residue purification and collection to address these technical issues. Summary of the Invention

[0004] The purpose of the present invention is to provide a solid phase extraction device for purifying and collecting pesticide residues, which solves the problems in the above technical background through the specific structural design of the liquid storage component, pipetting component, regulation component and extraction component.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions: The present invention is a solid phase extraction device for purifying and collecting pesticide residues, comprising a workbench, a liquid storage component rotatably provided on the surface of the workbench, the liquid storage component comprising a rotatably provided liquid storage support plate, a plurality of liquid storage tanks fixedly connected to the upper surface of the liquid storage support plate, a liquid collection tube fixedly connected to the interior of the liquid storage tank, a first opening and closing fan blade and a second opening and closing fan blade rotatably provided inside the liquid collection tube; a pipetting component is provided on the surface of the workbench, the pipetting component comprising a rotatably provided and movable up and down pipetting support plate, The surface of the pipetting support plate is provided with a pipetting port corresponding to the liquid storage tank one by one, the pipetting port is fixedly connected to the inside of the pipetting port, a pipetting piston column is slidably provided inside the pipette, and the upper surface of the pipetting piston column is fixedly connected to the pipetting docking block through a docking column; the upper surface of the workbench is fixedly connected to a regulating assembly, and the regulating assembly includes two regulating transmission blocks symmetrically slidably arranged, one side of which is fixedly connected to a liquid pushing plate, and the other side of the regulating transmission block is fixedly connected to a clamping transmission block, and one side of the clamping transmission block is symmetrically rotatably provided with two liquid clamping claws.

[0006] An extraction component is rotatably provided on the surface of the workbench, and the extraction component includes a rotatably provided extraction support plate and an extraction control block rotatably provided on the upper surface of the workbench, a plurality of extraction ports are provided on the surface of the extraction support plate, and an extraction tube is slidably provided inside the extraction port, and a collection frame is slidably provided under the extraction support plate, and an annular guide rail is fixedly connected to the lower surface of the collection frame, and a lifting slide groove is provided on the peripheral side of the extraction control block, and a lifting support block is fixedly connected to the upper surface of the workbench, and the lifting support block is rotatably connected to the lifting transmission connecting rod on both relative sides, and the two lifting transmission connecting rods are fixedly connected, and one end of one of the lifting transmission connecting rods is fixedly connected to a first lifting transmission column that slides with the annular guide rail, and one end of the other lifting transmission connecting rod is fixedly connected to a second lifting transmission column that slides with the lifting slide groove.

[0007] The present invention is further configured such that the liquid storage component also includes a liquid storage support shaft rotatably arranged on the upper surface of the workbench, the liquid storage support shaft is fixedly connected to the liquid storage support plate, a first transmission wheel is fixedly connected to the peripheral side of the liquid storage support shaft, and a second transmission wheel is rotatably arranged on the lower surface of the workbench, and the second transmission wheel is fixedly connected to the liquid storage support shaft.

[0008] The cam is fixedly provided with two guide rails on the upper surface of the liquid storage tank, and a U-shaped transmission plate is symmetrically provided between the two guide rails, and an opening and closing transmission port is symmetrically opened on the surface of the U-shaped transmission plate, and a first return spring is fixedly connected to the upper surface of the liquid storage tank; a side surface of the first opening and closing fan blade is fixedly connected to the opening and closing shaft, and the opening and closing shaft is rotatably connected to the liquid extraction pipe. The opening and closing shaft passes through the liquid extraction pipe and is fixedly connected to the first opening and closing disk. A side surface of the second opening and closing fan blade is fixedly connected to a plurality of opening and closing tubes, the opening and closing tube is sleeved on the side surface of the opening and closing shaft, and the opening and closing tube passes through the liquid extraction pipe. One end of the opening and closing tube is fixedly connected to the second opening and closing disk, and the side surface of the second opening and closing disk away from the second opening and closing fan blade is fixedly connected to the second opening and closing transmission post, and the first opening and closing transmission post and the second opening and closing transmission post are respectively located inside the corresponding opening and closing transmission ports.

[0009] The present invention is further configured as follows: the pipetting assembly also includes a hollow support seat fixedly connected to the upper surface of the workbench, the peripheral side surface of the hollow support seat is rotatably connected to a third transmission wheel, the third transmission wheel and the first transmission wheel are connected by a first transmission belt, and the peripheral side surface of the third transmission wheel is fixedly connected to an arc transmission rack, and the upper surface of the third transmission wheel is symmetrically fixedly connected to two limit branches; the lower surface of the pipetting support plate is symmetrically fixedly connected to two limit slides, the limit slides are slidably fitted with the corresponding limit branches, and the lower surface of the pipetting support plate is fixedly connected to the pipetting support seat, the lower surface of the pipetting support seat is rotatably connected to an internal threaded tube, and the internal thread of the internal threaded tube is fitted with a driving screw.

[0010] The present invention is further configured as follows: two limit support plates are symmetrically fixedly connected to the upper surface of the hollow support seat, a limit tube is fixedly connected between the two limit support plates, and the limit tube and the internal threaded tube are slidably fitted together; one end of the driving screw passing through the workbench is fixedly connected to a transmission bevel gear, the lower surface of the workbench is fixedly connected to an extension support plate, one side of the extension support plate is rotatably connected to a driving bevel gear meshing with the transmission bevel gear, and the lower surface of the pipette is fixedly connected to a downward pressure support plate corresponding to the U-shaped transmission plate.

[0011] The present invention is further configured such that the regulating component also includes an L-shaped support plate fixedly connected to the upper surface of the workbench, one end of the L-shaped support plate is fixedly connected to a regulating support plate, two regulating slides are symmetrically provided on the surface of the regulating support plate, and the regulating transmission block is slidably arranged inside the corresponding regulating slide; one side of the regulating support plate is fixedly connected to a clamping frame, and a trapezoidal regulating opening is provided on the upper surface of the clamping frame, and the upper end of the liquid collection clamping claw is adapted to the trapezoidal regulating opening, and the clamping transmission block is fixedly connected to a clamping support plate on one side close to the liquid collection clamping claw, and an arc spring is fixedly connected between the two opposite side surfaces of the clamping support plate and the corresponding liquid collection clamping claws.

[0012] The present invention is further configured such that the lower surface of the L-shaped support plate is rotatably connected to a lifting adjustment column, and a lifting adjustment groove is provided on the side surface around the lifting adjustment column, and the lifting adjustment groove has a spiral groove at one end connected to the vertical groove; the other side of the regulating transmission block is fixedly connected to the regulating transmission column, and a horizontal transmission plate is fixedly connected between the two regulating transmission columns, and the other side of the regulating support plate is provided with a lifting guide groove, and a lifting transmission block is slidably arranged inside the lifting guide groove, and the lifting transmission block is fixedly connected to the bottom of the lifting guide groove and a telescopic rod and a second return spring, and the second return spring is sleeved on the outside of the telescopic rod, and the horizontal transmission plate is fixedly connected to the lifting transmission block, and one side of the horizontal transmission plate is fixedly connected to the lifting transmission column, and the lifting transmission column slides with the lifting adjustment groove.

[0013] The present invention is further configured as follows: the extraction component also includes an extraction support column rotatably connected to the upper surface of the workbench, two extraction limit bars are symmetrically fixedly connected to the circumferential side surfaces of the extraction support column, and the extraction support column is fixedly connected to the extraction support plate; and the collection frame is slidably arranged on the extraction limit bar and the circumferential side surfaces of the extraction support column, the circumferential side surfaces of the collection frame are fixedly connected to a drainage branch pipe, the circumferential side surfaces of the extraction support column are fixedly connected to an extraction drive gear, the upper surface of the extraction drive gear is rotatably connected to a drive ring, a third return spring is fixedly connected between the drive ring and the annular guide rail, the upper surface of the workbench is rotatably connected to an extraction transmission gear meshing with the extraction drive gear, and the extraction transmission gear is adapted to the arc-shaped transmission rack.

[0014] The present invention is further configured such that the upper surface of the extraction support plate is fixedly connected to a first limit seat corresponding one-to-one to the extraction tube, the upper surface of the extraction support plate is slidably provided with a second limit seat corresponding one-to-one to the first limit seat, and the second limit seat is connected to the first limit seat by bolts; the lifting slide is composed of a plurality of first horizontal grooves, an ascending groove, a second horizontal groove and a descending groove connected in sequence, the lower surface of the workbench is rotatably connected to an extraction driving plate, the extraction driving plate is fixedly connected to the extraction regulating block, a plurality of arc-shaped driving racks are fixedly connected to the peripheral side surface of the extraction driving plate, the lower surface of the workbench is rotatably connected to an adjusting gear matching the arc-shaped driving rack, the lower surface of the adjusting gear is fixedly connected to a fourth transmission wheel, and the fourth transmission wheel and the second transmission wheel are connected by a second transmission belt.

[0015] The present invention has the following beneficial effects: 1. The present invention controls the synchronous rotation of the pipetting support plate and the liquid storage support plate by setting a liquid storage component, a pipetting component, and a regulating component, so that the pipette passes through the liquid collection station and the liquid discharge station in sequence, and the liquid storage tank passes through the liquid collection station in sequence. The liquid pushing plate and the liquid collection clamping claw move down and then up synchronously to perform liquid collection and liquid discharge operations, so that each pipette can only absorb a fixed extraction reagent, avoiding frequent replacement of pipettes and alternating contamination of reagents caused by pipettes absorbing different extraction reagents.

[0016] 2. The present invention is provided with a liquid storage component, a pipetting component, a regulating component and an extraction component. When the pipetting support plate and the liquid storage support plate rotate one circle, after completing a solid phase extraction operation, the extraction support plate synchronously rotates 72° to switch the position of the extraction tube, which is convenient for batch automatic extraction, and at the same time facilitates the installation and disassembly of the extraction tube, reduces the extraction tube switching process, and improves the batch extraction efficiency.

[0017] 3、The application sets the extraction assembly, drives the extraction control block to rotate, makes the second lifting transmission column slide along the lifting chute, and when the second lifting transmission column is limited by the lifting chute, the second lifting transmission column moves up and down, drives the two lifting transmission connecting rods to rotate, and then makes the first lifting transmission column move up and down synchronously, so that the collecting frame moves up and down synchronously, realizes the control of the closed and opened lower end of the extraction tube in turn, and realizes the automatic liquid beating process.

[0018] Of course, implementing any product of the application does not necessarily need to achieve all the advantages described above at the same time. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments. Obviously, the drawings in the following description only some embodiments of the application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0020] Figure 1 It is a structural schematic diagram of a solid phase extraction device for pesticide residue purification and collection.

[0021] Figure 2 It is another angle structural schematic diagram of the application.

[0022] Figure 3 It is a part of the structure of the application.

[0023] Figure 4 It is a structural schematic diagram of the liquid storage assembly in the application.

[0024] Figure 5 It is a part of the structure of the liquid storage assembly in the application.

[0025] Figure 6 It is a structural schematic diagram of the liquid transfer assembly in the application.

[0026] Figure 7 It is another angle structural schematic diagram of the liquid transfer assembly in the application.

[0027] Figure 8 It is a longitudinal structural sectional view of the liquid transfer assembly in the application.

[0028] Figure 9 It is a structural schematic diagram of the control assembly in the application.

[0029] Figure 10 It is a longitudinal structural sectional view of the control assembly in the application.

[0030] Figure 11 It is Figure 10 It is a local enlarged schematic diagram of A in the application.

[0031] Figure 12 Schematic diagram of the structure of the extraction component in the present invention.

[0032] Figure 13 This is a schematic structural diagram of the extraction component from another angle in the present invention.

[0033] Figure 14 This is a schematic structural diagram of the extraction component from another angle in the present invention.

[0034] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0035] 1-liquid storage assembly, 101-liquid storage support plate, 102-liquid storage tank, 103-liquid extraction tube, 104-first opening and closing fan blade, 105-second opening and closing fan blade, 106-first transmission wheel, 107-second transmission wheel, 108-guide rail, 109-U-shaped transmission plate, 110-first return spring, 111-first opening and closing disk, 112-first opening and closing transmission column, 113-second opening and closing disk, 114-second opening and closing transmission column, 2-pipetting assembly, 201-pipetting Support plate, 202-pipette, 203-pipette piston column, 204-pipette docking block, 205-hollow support seat, 206-third transmission wheel, 207-arc-shaped transmission rack, 208-limit branch pipe, 209-limit slide rod, 210-pipette support seat, 211-internal threaded tube, 212-drive screw, 213-limit tube, 214-drive bevel gear, 215-drive bevel gear, 216-down pressure support plate, 3-regulating component, 301-push plate , 302-clamping transmission block, 303-liquid clamping claw, 304-L-shaped support plate, 305-regulating support plate, 306-clamping frame, 307-trapezoidal regulating port, 308-arc spring, 309-lifting regulating column, 310-lifting regulating slot, 311-regulating transmission column, 312-horizontal transmission plate, 313-lifting guide slot, 314-second return spring, 4-extraction component, 401-extraction support plate, 402-extraction regulating block, 403-extraction Tube, 404-collection frame, 405-annular guide rail, 406-lifting slide, 407-lifting transmission connecting rod, 408-lifting transmission column, 409-second lifting transmission column, 410-extraction limit bar, 411-drainage branch pipe, 412-extraction drive gear, 413-third return spring, 414-extraction drive gear, 415-first limit seat, 416-second limit seat, 417-arc-shaped drive rack, 418-adjusting gear, 419-fourth transmission wheel. DETAILED DESCRIPTION

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making any creative efforts shall fall within the scope of protection of the present invention.

[0037] For specific embodiment 1, please refer to Figure 1-14 The present invention is a solid phase extraction device for purifying and collecting pesticide residues, comprising a workbench. Specifically, a liquid storage component 1 is rotatably provided on the surface of the workbench. The liquid storage component 1 comprises a rotatably provided liquid storage support plate 101. A plurality of liquid storage tanks 102 are fixedly connected to the upper surface of the liquid storage support plate 101. There are five liquid storage tanks 102 in total (such as Figure 4 As shown), two liquid storage tanks 102 store washing agents, and the remaining liquid storage tanks 102 store activating agents, sample agents and eluents respectively, and the liquid storage tanks 102 are distributed in a ring shape in sequence and are arranged in the order of activating agent, sample reagent, two washing agents and eluent. A liquid collection tube 103 is fixedly connected to the liquid storage tank 102, and the liquid collection tube 103 fits in the bottom of the liquid storage tank 102 to facilitate the absorption of the reagents inside the liquid storage tank 102. A first opening and closing fan blade 104 and a second opening and closing fan blade 105 are rotatably provided inside the liquid collection tube 103. The first opening and closing fan blade 104 and the second opening and closing fan blade 105 form a closed disc and fit in the inner wall of the liquid collection tube 103 to keep the liquid collection tube 103 closed.

[0038] Furthermore, a pipetting assembly 2 is provided on the surface of the workbench, and the pipetting assembly 2 includes a pipetting support plate 201 that is rotatably arranged and can move up and down. A pipetting port corresponding to the liquid storage tank 102 is opened on the surface of the pipetting support plate 201, and a pipette 202 is fixedly connected inside the pipetting port. The pipetting support plate 201 is located above the liquid storage support plate 101, and there is a partial downward overlapping area between the two, which can ensure that the pipette 202 and the corresponding liquid storage tank 102 are coaxially overlapped up and down. The pipette 202 is composed of a pipetting storage tube and a pipetting extraction tube connected to each other. A pipetting piston column 203 is slidably provided inside the pipette 202. The pipetting piston column 203 is composed of a piston block and a piston rod connected, and the piston block is in contact with the inner wall of the pipette 202. The upper surface of the pipetting piston column 203 is fixedly connected to a pipetting docking block 204 through a docking column.

[0039] Furthermore, a regulating assembly 3 is fixedly connected to the upper surface of the workbench, and the regulating assembly 3 includes two regulating transmission blocks symmetrically slidably arranged, wherein one side of the regulating transmission block is fixedly connected to a liquid pushing plate 301, and the area corresponding to the liquid pushing plate 301 below is the liquid discharge station (i.e., the area where the pipetting support plate 201 and the liquid storage support plate 101 overlap, such as Figure 3As shown), one side of the other regulating transmission block is fixedly connected to a clamping transmission block 302, and one side of the clamping transmission block 302 is symmetrically provided with two liquid-taking clamping claws 303, and the area below the liquid-taking clamping claws 303 is the liquid-taking station (as shown). Figure 3 shown).

[0040] Furthermore, an extraction component 4 is rotatably provided on the surface of the workbench, and the extraction component 4 includes a rotatably provided extraction support plate 401 and an extraction control block 402 rotatably provided on the upper surface of the workbench. A plurality of extraction ports are provided on the surface of the extraction support plate 401, and extraction tubes 403 are slidably provided inside the extraction ports. The number of extraction tubes 403 is the same as that of the pipette 202 and the liquid storage tank 102. The extraction support plate 401 is located below the pipette support plate 201, and the two have a certain overlapping area, which can satisfy the coaxial overlap of the extraction support plate 401, the pipette 202 and the corresponding extraction tube 403 (that is, the position corresponding to the liquid collection station). A collection frame 404 is slidably provided below the extraction support plate 401, and the bottom inner bottom of the collection frame 404 is made of elastic material. When the collection frame When 404 is in close contact with the lower end of the extraction tube 403, the extraction tube 403 remains airtight. When the collection frame 404 moves downward away from the extraction tube 403, the lower end of the extraction tube 403 opens. The lower surface of the collection frame 404 is fixedly connected to the annular guide rail 405, and the side surfaces of the extraction control block 402 are provided with lifting slides 406. The upper surface of the workbench is fixedly connected to a lifting support block, and the lifting support block is rotatably connected to the lifting transmission connecting rods 407 on both sides relative to each other. The two lifting transmission connecting rods 407 are fixedly connected, and one end of one of the lifting transmission connecting rods 407 is fixedly connected to a first lifting transmission column 408 that slides with the annular guide rail 405, and one end of the other lifting transmission connecting rod 407 is fixedly connected to a second lifting transmission column 409 that slides with the lifting slide 406.

[0041] The operation process of this embodiment is as follows: in the initial state, the corresponding pipette 202 first draws the corresponding reagent (ie, the pipette 202 at A1 draws the activator, the pipette 202 at B1 draws the sample reagent, and the pipette 202 at C1 draws the rinse agent). Figure 3 As shown), control the pipetting support plate 201 to move downward, and then perform liquid taking and liquid discharge operations. The specific operation process is as follows:

[0042] When the pipette extraction tube portion of the pipette 202 at D1 is located inside the corresponding liquid collection tube 103, the first opening and closing fan blade 104 and the second opening and closing fan blade 105 rotate, the liquid collection tube 103 is in an open state, and the pipette 202 at A1 containing the activator is coaxial with the extraction tube 403, and the two regulating transmission blocks are controlled to move downward synchronously, and the pushing plate 301 and the clamping transmission block 302 move downward synchronously. When the pushing plate 301 fits the pipette docking block 204 above the pipette 202 at A1, as the pushing plate 301 continues to move downward, the pipette piston column 203 moves downward synchronously and discharges the activator inside the pipette 202. The activator flows downward to the corresponding extraction tube 403 and activates the extraction tube 403. In this process The middle clamping transmission block 302 moves downward. When the liquid collection clamping claw 303 contacts the pipetting docking block 204 above the pipette 202 at D1, as the clamping transmission block 302 continues to move downward, the liquid collection clamping claw 303 is squeezed by the external force and rotates away from each other. As the clamping transmission block 302 continues to move downward, the liquid collection clamping claw 303 disengages from the pipetting docking block 204, the external force disappears and the liquid collection clamping claw 303 rotates in the opposite direction to grab and limit the pipetting docking block 204, and then the two control transmission blocks are controlled to move upward synchronously. The liquid collection clamping claw 303 drives the corresponding pipetting docking block 204 to move upward, and the pipetting piston column 203 at D1 moves upward synchronously to extract the eluent inside the liquid storage tank 102 directly below D1.

[0043] When the liquid collection and discharge operations are completed, the pipetting support plate 201 is controlled to move upward. During this process, the extraction control block 402 is controlled to rotate, and the second lifting transmission column 409 slides along the lifting slide 406 and is squeezed by the inner wall of the lifting slide 406. The second lifting transmission column 409 moves downward to drive the two lifting transmission connecting rods 407 to rotate synchronously, so that the first lifting transmission column 408 presses the annular guide rail 405, driving the collection frame 404 to move downward, and the activator inside the extraction tube 403 is flowed into the collection frame 404 and discharged. The pipetting support plate 201 and the liquid storage support plate 101 rotate synchronously by 72 degrees, so that the pipette 202 at E1 and the liquid storage tank 102 at E2 rotate synchronously, and the two overlap with each other on the same axis. The two are combined and both are located at the liquid collection station. At the same time, the pipette 202 at B1 rotates to the liquid discharge station. During this process, the second lifting transmission column 409 slides along the lifting slide 406 and is squeezed by the inner wall of the lifting slide 406. The second lifting transmission column 409 moves upward, driving the two lifting transmission connecting rods 407 to rotate synchronously in the opposite direction, so that the first lifting transmission column 408 lifts the annular guide rail 405, driving the collection frame 404 to move upward, and the bottom of the collection frame 404 is in contact with the lower end of the extraction tube 403. The extraction tube 403 remains in a closed state, and the liquid collection and discharge operations are performed again. The sample reagent contained in the pipette 202 at B1 enters the extraction tube 403, and the extraction tube 403 absorbs the substances in the sample reagent.

[0044] The pipetting support plate 201 and the liquid storage support plate 101 are controlled to rotate synchronously again, and the operation is cyclical, so that the pipetting support plate 201 and the liquid storage support plate 101 rotate 216° (that is, 3 times 72°, so that the pipette 202 originally at E1 is located at the drainage station), and the extraction tube 403 directly below the drainage station is injected with eluent twice in sequence, and the pipette 202 originally at E1 is moved and located at the drainage station. After the pipette 202 originally at E1 injects the eluent it has absorbed into the extraction tube 403, the extraction tube 403 directly below the drainage station completes an extraction process. During the process of the pipetting support plate 201 and the liquid storage support plate 101 rotating 72° again, the extraction support plate 401 synchronously rotates 72°, so that the extraction tube 403 at B3 is located directly below the drainage station. At this time, the pipette 202 originally at E1 returns to its initial state, so as to carry out the next extraction operation.

[0045] For specific embodiment 2, please refer to Figure 2-8 On the basis of the specific embodiment 1, specifically, the liquid storage component 1 also includes a liquid storage support shaft rotatably arranged on the upper surface of the workbench, the liquid storage support shaft is fixedly connected to the liquid storage support plate 101, a first transmission wheel 106 is fixedly connected to the peripheral side of the liquid storage support shaft, and a second transmission wheel 107 is rotatably arranged on the lower surface of the workbench, and the second transmission wheel 107 is fixedly connected to the liquid storage support shaft.

[0046] Furthermore, two guide rails 108 are symmetrically fixedly connected to the upper surface of the liquid storage tank 102, and a U-shaped transmission plate 109 is slidably arranged between the two guide rails 108. The surface of the U-shaped transmission plate 109 is symmetrically provided with opening and closing transmission ports, and the opening and closing transmission ports are respectively provided on the two vertical sections of the U-shaped transmission plate 109, and a first return spring 110 is fixedly connected between the U-shaped transmission plate 109 and the upper surface of the liquid storage tank 102; an opening and closing shaft is fixedly connected to one side of the first opening and closing fan blade 104, and the opening and closing shaft is rotatably connected to the liquid collection pipe 103. One end of the opening and closing shaft passes through the liquid collection pipe 103 and is fixedly connected to a first opening and closing disk 111. The first opening and closing disk 111 is fixedly connected to the first opening and closing transmission on the side close to the first opening and closing fan blade 104. The movable column 112 and one side of the second opening and closing fan blade 105 are fixedly connected to a plurality of opening and closing tubes, the opening and closing tubes are sleeved on the side of the opening and closing shaft, and one end of the opening and closing tube passes through the liquid extraction tube 103 and is fixedly connected to the second opening and closing disk 113. The second opening and closing disk 113 is fixedly connected to the side away from the second opening and closing fan blade 105. The first opening and closing transmission column 112 and the second opening and closing transmission column 114 are both located at eccentric positions, and the first opening and closing transmission column 112 and the second opening and closing transmission column 114 are respectively located inside the corresponding opening and closing transmission port, and the opening and closing transmission port moves synchronously with the U-shaped transmission plate 109, thereby driving the first opening and closing transmission column 112 and the second opening and closing transmission column 114 inside the opening and closing transmission port to move synchronously.

[0047] Furthermore, the pipetting assembly 2 also includes a hollow support seat 205 fixedly connected to the upper surface of the workbench, and the hollow support seat 205 is rotatably connected to the side surface of the third transmission wheel 206. The third transmission wheel 206 is connected to the first transmission wheel 106 through a first transmission belt, and the side surface of the third transmission wheel 206 is fixedly connected to an arc-shaped transmission rack 207, and the upper surface of the third transmission wheel 206 is symmetrically fixedly connected to two limiting branches 208; the lower surface of the pipetting support plate 201 is symmetrically fixedly connected to two limiting slides 209, and the limiting slides 209 slide along the corresponding limiting branches 208 to keep the pipetting support plate 201 stable in up and down movement, and the limiting slides 209 are slidably fitted with the corresponding limiting branches 208, and the lower surface of the pipetting support plate 201 is fixedly connected to a pipetting support seat 210, and the lower surface of the pipetting support seat 210 is rotatably connected to an internal threaded tube 211, and the internal thread of the internal threaded tube 211 is fitted with a driving screw 212.

[0048] Furthermore, two limiting support plates are symmetrically fixedly connected to the upper surface of the hollow support seat 205, and a limiting tube 213 is fixedly connected between the two limiting support plates. The limiting tube 213 slides with the internal threaded tube 211. Under the sliding cooperation between the limiting tube 213 and the side surface of the internal threaded tube 211, the internal threaded tube 211 can be kept moving vertically up and down; the driving screw 212 passes through one end of the workbench and is fixedly connected to the transmission bevel gear 214. The lower surface of the workbench is fixedly connected to an extension support plate, and one side of the extension support plate is rotatably connected to the transmission conical gear The gear 214 is meshed with a driving bevel gear 215, and a first driving motor is fixedly installed on the other side of the extended support plate. The output shaft of the first driving motor is fixedly connected to the driving bevel gear 215, and the lower surface of the pipette 202 is fixedly connected to a downward pressure support plate 216 corresponding to the U-shaped transmission plate 109. The downward pressure support plate 216 is arranged on the lower surface of the pipette storage tube part of the pipette 202. When the pipette 202 and the liquid storage tank 102 coincide with the upper and lower coaxial centers, the downward pressure support plate 216 is located directly above the corresponding U-shaped transmission plate 109.

[0049] The operation process of this embodiment is as follows: in the initial state, the pipettes 202 at A1, B1, and C1 are respectively filled with an activating agent, a sample reagent, and an eluting reagent, and the pipette 202 at D1 is located directly above the corresponding liquid storage tank 102, and the liquid storage tank 102 is filled with an eluent. The first driving motor is started to drive the driving bevel gear 215 to rotate. Under the meshing action of the driving bevel gear 215 and the transmission bevel gear 214, the transmission bevel gear 214 rotates and then drives the driving screw 212 to rotate. Under the threaded cooperation of the driving screw 212 and the internal threaded tube 211, the internal threaded tube 211 slides downward along the limiting tube 213, and the limiting slide bar 209 moves along the corresponding limiting branch tube 20 8 slides downward inside, thereby driving the pipetting support plate 201 to move downward synchronously. When the lower end of the pipette 202 at D1 is flush with the upper surface of the liquid collection tube 103, the downward pressing support plate 216 fits into the corresponding U-shaped transmission plate 109. As the pipetting support plate 201 continues to move downward, the downward pressing support plate 216 presses down the U-shaped transmission plate 109, the first return spring 110 is compressed, and the U-shaped transmission plate 109 moves downward along the guide rail 108. The opening and closing transmission port moves synchronously with the U-shaped transmission plate 109, thereby driving the first opening and closing transmission column 112 and the second opening and closing transmission column 114 inside the opening and closing transmission port to move synchronously. The first opening and closing transmission column 112 drives the first opening and closing disk 111 to rotate counterclockwise (such as Figure 5 As shown in FIG), the first opening and closing fan blade 104 rotates counterclockwise synchronously, and the second opening and closing transmission column 114 drives the second opening and closing disk 113 to rotate clockwise (as shown in FIG). Figure 5When the first opening-closing fan leaf 104 rotates 72°, the second opening-closing fan leaf 105 rotates 72° synchronously, and the liquid taking tube 103 is opened, and the pipette extraction tube portion of the pipette 202 is located inside the liquid taking tube 103.

[0050] When the liquid taking and discharging operation is completed, the first transmission wheel 106 is controlled to rotate 72°, under the connection action of the first transmission belt, the third transmission wheel 206 is driven to rotate 72° synchronously, and then the liquid storage support disc 101 and the pipette support disc 201 drive the liquid storage tank 102 and the pipette 202 to rotate 72° respectively, so that the liquid storage tank 102 at E2 and the pipette 202 at E1 rotate synchronously to the liquid taking station, and the coaxial centers of the two are coincided with each other, and the pipette 202 at B1 rotates to the liquid discharging station.

[0051] Specific embodiment three, please refer to Figure 9-14 On the basis of the specific embodiment one and the specific embodiment two, specifically, the control assembly 3 further comprises an L-shaped support plate 304 fixedly connected to the upper surface of the workbench, one end of the L-shaped support plate 304 is fixedly connected with a control support plate 305, the surface of the control support plate 305 is symmetrically provided with two control sliding grooves, and a control transmission block is slidingly arranged in the corresponding control sliding groove; one side surface of the control support plate 305 is fixedly connected with a clamping frame body 306, the upper surface of the clamping frame body 306 is provided with a trapezoidal control port 307, the upper end of the liquid taking clamping claw 303 is adapted between the trapezoidal control port 307, the upper end of the liquid taking clamping claw 303 is a bending structure and the lower surface is an inclined sliding surface structure, a clamping support plate is fixedly connected to one side of the clamping transmission block 302 close to the liquid taking clamping claw 303, and the arc springs 308 are fixedly connected between the opposite two side surfaces of the clamping support plate and the corresponding liquid taking clamping claw 303.

[0052] Further, the lower surface of the L-shaped support plate 304 is rotationally connected with a lifting adjusting column 309, the circumferential surface of the lifting adjusting column 309 is provided with a lifting adjusting groove 310, the lifting adjusting groove 310 has one end of a spiral groove communicated with a vertical groove, the upper surface of the L-shaped support plate 304 is fixedly provided with a second driving motor, and the output shaft of the second driving motor is fixedly connected with the lifting adjusting column 309; the other side surface of the adjusting transmission block is fixedly connected with an adjusting transmission column 311, and the two adjusting transmission columns 311 are fixedly connected with a horizontal transmission plate 312; the other side surface of the adjusting support plate 305 is provided with a lifting guide groove 313, and the lifting guide groove 313 is internally slidably provided with a lifting transmission block; the lifting transmission block is fixedly connected with a telescopic rod and a second reset spring 314 at the bottom of the lifting guide groove 313, the second reset spring 314 is sleeved on the outside of the telescopic rod, and the horizontal transmission plate 312 is fixedly connected with the lifting transmission block, one side surface of the horizontal transmission plate 312 is fixedly connected with a lifting transmission column, the lifting transmission column is slidably connected with the lifting adjusting groove 310, and the lifting adjusting column 309 rotates under the sliding cooperation of the lifting transmission column and the lifting adjusting groove 310; when the lifting transmission column moves along the spiral groove section of the lifting adjusting groove 310, the horizontal transmission plate 312 is driven to move downward.

[0053] Further, the extraction assembly 4 further comprises an extraction support column rotationally connected to the upper surface of the workbench, the circumferential surface of the extraction support column is symmetrically fixedly connected with two extraction limiting strips 410, and the extraction support column is fixedly connected with the extraction support disc 401; the collecting frame 404 is slidably arranged on the circumferential surface of the extraction limiting strip 410 and the extraction support column, the circumferential surface of the collecting frame 404 is fixedly connected with a drainage branch pipe 411, the circumferential surface of the extraction support column is fixedly connected with an extraction driving gear 412, the upper surface of the extraction driving gear 412 is rotationally connected with a driving ring, the driving ring is fixedly connected with the third reset spring 413 between the annular guide rail 405, the upper surface of the workbench is rotationally connected with an extraction transmission gear 414 engaged with the extraction driving gear 412, and the extraction transmission gear 414 is adapted with the arc-shaped transmission rack 207.

[0054] Furthermore, a first limiting seat 415 corresponding to the extraction tube 403 is fixedly connected to the upper surface of the extraction support plate 401, and a second limiting seat 416 corresponding to the first limiting seat 415 is slidably provided on the upper surface of the extraction support plate 401. The second limiting seat 416 is connected to the first limiting seat 415 by bolts. The interior of the second limiting seat 416 and the first limiting seat 415 are both made of elastic material, which is convenient for the extraction tube 403 to be tightly attached to the side surface, thereby keeping the extraction tube 403 in a fixed position; the lifting chute 406 is composed of a plurality of first horizontal grooves, an ascending groove, a second horizontal groove and a descending groove connected in sequence. The first horizontal groove, the descending groove, the second horizontal groove and the ascending groove are all five sections, and are arranged according to the first horizontal groove, the descending groove, the second horizontal groove and the ascending groove. The periods of the groove, the second horizontal groove and the rising groove are connected in sequence. The lower surface of the workbench is rotatably connected to the extraction drive disk, and the extraction drive disk is fixedly connected to the extraction control block 402. The upper surface of the workbench is fixedly installed with a third drive motor through a mounting bracket, and the output shaft of the third drive motor is fixedly connected to the extraction control block 402. A plurality of arc-shaped drive racks 417 are fixedly connected to the peripheral side of the extraction drive disk, and there is a certain interval between adjacent arc-shaped drive racks 417. The lower surface of the workbench is rotatably connected to an adjusting gear 418 that cooperates with the arc-shaped drive rack 417, and the lower surface of the adjusting gear 418 is fixedly connected to the fourth transmission wheel 419, and the fourth transmission wheel 419 is connected to the second transmission wheel 107 through a second transmission belt.

[0055] The operation process of this embodiment is as follows: in the initial state, the corresponding pipette 202 first draws the corresponding reagent (ie, the pipette 202 at A1 draws the activator, the pipette 202 at B1 draws the sample reagent, and the pipette 202 at C1 draws the rinse agent). Figure 3 As shown in FIG, when the pipette support plate 201 moves downward and the pipette extraction tube of the pipette 202 is located inside the liquid collection tube 103, the second drive motor is activated to drive the lifting adjustment column 309 to rotate. As the lifting adjustment column 309 rotates, the lifting transmission column slides along the spiral groove section of the lifting adjustment groove 310, thereby driving the horizontal transmission plate 312 downward. The lifting transmission block slides downward along the lifting guide groove 313. The telescopic rod and the second return spring 314 are compressed. Under the connection action of the control transmission column 311, the two control transmission blocks move downward synchronously, and the liquid pushing plate 301 and the clamping transmission block 302 move downward synchronously. When the liquid pushing plate 301 is in contact with the pipette docking block 204 above the pipette 202 at position A1, as the liquid pushing plate 301 continues to move downward, the pipette piston column 203 moves downward synchronously and discharges the activator inside the pipette 202. The activator falls into the corresponding extraction tube 403 and activates the extraction tube 403, thereby completing the liquid discharge process.

[0056] After the cam 314 is in the process of being lifted up, the lifting gear 302 is lifted and the lifting gear 303 is lifted and the lifting gear 304 is lifted. The lowering transmission column is located inside the vertical groove. Under the elastic recovery action of the second return spring 314, the lifting transmission column moves upward along the vertical groove, driving the horizontal transmission plate 312 to move upward synchronously, and driving the control transmission block to move upward synchronously, so that the liquid clamping claw 303 drives the corresponding pipetting docking block 204 to move upward, and the pipetting piston column 203 at D1 moves upward synchronously to extract the eluent inside the liquid storage tank 102 just below D1, and realize the liquid taking operation in sequence. The liquid clamping claw 303 contacts the trapezoidal control port 307, and as the liquid clamping claw 303 continues to move upward, the two liquid clamping claws 303 rotate under the restriction of the trapezoidal control port 307, and the arc spring 308 is stretched until the liquid clamping claw 303 disengages from the corresponding pipetting docking block 204, thereby completing the liquid taking operation.

[0057] In the process of taking liquid and discharging liquid, the third driving motor is started to drive the extraction control block 402 to rotate, the second lifting transmission column 409 moves along the first horizontal groove, the collection frame 404 is attached to the lower end of the extraction tube 403, and the extraction tube 403 remains closed. When the taking liquid and discharging liquid operations are completed (the second lifting transmission column 409 is located at the side of the first horizontal groove close to the descending groove), the first driving motor is started to drive the driving bevel gear 215 to rotate reversely. Under the meshing action of the driving bevel gear 215 and the transmission bevel gear 214, the driving screw 212 rotates reversely. Under the thread cooperation of the driving screw 212 and the internal threaded pipe 211, the internal threaded pipe 211 slides upward along the limiting pipe 213, thereby driving the pipette support disc 201 to move upward synchronously. At this time, the second lifting transmission column 409 slides along the descending groove, and the second lifting transmission column 409 is gradually moved downward under the limitation of the descending groove, driving the lifting transmission connecting rod 407 to rotate, thereby making the two lifting transmission connecting rods 407 rotate synchronously. The first lifting transmission column 408 moves downward synchronously with the rotation of the lifting transmission connecting rod 407, thereby pressing the annular guide rail 405 downward, driving the collection frame 404 to move downward, and making the collection frame 404 away from the lower end of the extraction tube 403, so that the lower end of the extraction tube 403 is opened, the activator in the extraction tube 403 flows into the collection frame 404, and is discharged into the corresponding waste liquid collection equipment through the discharge branch pipe 411.

[0058] Meanwhile, the extraction drive disc is driven to rotate synchronously by the rotation of the extraction control block 402, and the arc-shaped driving rack 417 moves synchronously with the extraction drive disc. When the second lifting transmission column 409 is located at the end of the descending groove (i.e. the side of the descending groove close to the second horizontal groove), one of the arc-shaped driving racks 417 is engaged with the adjusting gear 418. With the continuous rotation of the extraction control block 402, the second lifting transmission column 409 slides along the second horizontal groove, and the collection frame 404 remains away from the extraction tube 403. The activator is continuously discharged, and under the meshing action of the arc-shaped driving rack 417 and the adjusting gear 418, the adjusting gear 418 rotates by 72°, thereby driving the fourth transmission wheel 419 to rotate synchronously. Under the connection action of the second transmission belt, the second transmission wheel 107 rotates synchronously by 72°, the first transmission wheel 106 and the liquid storage support disc 101 rotate synchronously by 72°, and under the connection action of the first transmission belt, the third transmission wheel 206 rotates synchronously with the first transmission wheel 106 by 72°, thereby realizing that the liquid storage support disc 101 and the pipette support disc 201 drive the liquid storage tank 102 and the pipette 202 to rotate by 72° respectively, so that the liquid storage tank 102 at the original E2 and the pipette 202 at the original E1 rotate synchronously to the liquid taking position, and the coaxial centers of the two are coincided with each other, and the pipette 202 at the original B1 rotates to the liquid discharging position. At this time, the second lifting transmission column 409 moves to the end of the second horizontal groove (i.e. the end of the second horizontal groove close to the ascending groove).

[0059] The pipetting support plate 201 is controlled to move downward again until the pipetting extraction tube part of the pipette 202 at E1 is located inside the liquid extraction tube 103 corresponding to the liquid storage tank 102 at E2. During this process, the second lifting transmission column 409 slides along the rising groove. The second lifting transmission column 409 is restricted by the rising groove and gradually moves upward, thereby driving the two lifting transmission connecting rods 407 to rotate synchronously in the opposite direction. The first lifting transmission column 408 moves upward synchronously with the reverse rotation of the lifting transmission connecting rod 407, thereby lifting the annular guide rail 405, driving the collection frame 404 to move upward, and the collection frame 404 gradually approaches the lower end of the extraction tube 403 until the bottom of the collection frame 404 fits with the lower end of the extraction tube 403, and the extraction tube 403 remains in a sealed state.

[0060] By rotating the lifting adjustment column 309, the liquid pushing plate 301 and the liquid collection clamping claw 303 are driven to move downward synchronously. The liquid pushing plate 301 discharges the pipette 202 originally at B1, and the sample reagent enters the extraction tube 403. The liquid pushing plate 301 and the liquid collection clamping claw 303 move upward synchronously, and the liquid collection clamping claw 303 lifts the pipette piston column 203 corresponding to the pipette 202 originally at E1, thereby realizing the liquid collection operation of the eluent in the liquid storage tank 102 originally at E2. During this process, the second lifting transmission column 409 slides along the first horizontal groove, the extraction tube 403 remains sealed and absorbs the substances in the sample reagent.

[0061] The pipetting support plate 201 is controlled to move upward, the second lifting transmission column 409 slides along the descending groove, the collection frame 404 moves downward, the lower end of the extraction tube 403 is opened, and the absorbed sample reagent waste liquid inside the extraction tube 403 flows into the collection frame 404 and is discharged into the corresponding waste liquid collection device along the drainage branch pipe 411.

[0062] At the same time, when the second lifting transmission column 409 moves along the end of the descending groove (i.e., the side of the descending groove close to the second horizontal groove), another arc-shaped driving rack 417 engages with the adjusting gear 418, and the second lifting transmission column 409 slides along the second horizontal groove. The collection frame 404 remains away from the extraction tube 403, and the activator is continuously discharged. At the same time, under the meshing action of the arc-shaped driving rack 417 and the adjusting gear 418, the adjusting gear 418 rotates 72°, thereby driving the fourth transmission wheel 419 to rotate synchronously. Under the connection action of the second transmission belt and the first transmission belt, the second transmission wheel 107 rotates 72° synchronously, and the liquid storage support plate 101 and the pipetting support plate 201 respectively drive the liquid storage tank 102 and the pipette 202 to rotate 72°, so that the liquid storage tank 102 at the original position D2 is rotated. The pipette 202 originally at A1 rotates synchronously to the liquid collection station, and the two coincide with each other on the same axis, and the pipette 202 originally at C1 rotates to the liquid discharge station. At this time, the second lifting transmission column 409 moves to the end of the second horizontal groove (that is, the end of the second horizontal groove close to the ascending groove), where liquid collection and liquid discharge operations are performed, so that the pipette 202 originally at A1 absorbs the activator inside the liquid storage tank 102 originally at D2, and the pipette 202 originally at C1 injects the eluent inside it into the extraction tube 403, and discharges substances other than pesticide residues in the extraction tube 403; the pipette support plate 201 moves upward, and the second lifting transmission column 409 slides along the descending groove. The waste liquid after elution flows into the collection frame 404 and is discharged into the corresponding waste liquid collection equipment along the drainage branch pipe 411.

[0063] In this cycle, when the liquid storage support plate 101 and the pipetting support plate 201 are rotated 144 degrees again (i.e., twice 72 degrees, completing two more liquid collection and drainage operations), the pipette 202 at the original D1 and the pipette 202 at the original E1 are moved to the drainage station, and the eluent and elution agents inside are injected into the extraction tube 403 in sequence, completing another elution and elution operation, and removing substances other than pesticide residues from the sample in the extraction tube 403 again. After removal, an eluent is injected to elute the pesticide residues absorbed in the extraction tube 403. After the pesticide residues are discharged, they are collected by a collection device. At the same time, the liquid storage tank 102 at the original C2 and the pipette 202 at the original B1, as well as the liquid storage tank 102 at the original B2 and the pipette 202 at the original C1 are synchronously rotated to the liquid collection station. The pipette at the original B1 and the pipette at the original C1 respectively absorb the sample reagent inside the liquid storage tank 102 at the original C2 and the eluent inside the liquid storage tank 102 at the original B2.

[0064] After the pipette 202 originally at E1 moves to the liquid discharge station and performs the liquid discharge operation (i.e., after the liquid storage support plate 101 and the pipetting support plate 201 rotate 72° four times), the arc-shaped transmission rack 207 engages with the extraction transmission gear 414. As the liquid storage support plate 101 and the pipetting support plate 201 continue to rotate 72° (i.e., the liquid storage support plate 101 and the pipetting support plate 201 complete a 360° rotation), the extraction transmission gear 414 rotates one circle under the meshing action of the arc-shaped transmission rack 207 and the extraction transmission gear 414. Under the meshing action of the extraction transmission gear 414 and the extraction drive gear 412, the extraction drive gear 412 is driven to rotate 72°, thereby causing the extraction support plate 401 to rotate 72° synchronously, so that the extraction tube 403 originally located at B3 rotates to be directly below the liquid discharge station, thereby facilitating the next solid-phase extraction operation.

[0065] After the solid-phase extraction is completed, the extraction tube 403 that has been extracted is rotated away from the drainage station, and the connection between the first limit seat 415 and the second limit seat 416 is canceled by manually turning the bolts, so that the second limit seat 416 slides away from the extraction tube 403, and the extraction tube 403 is pulled up to complete the separation between the extraction tube 403 and the extraction support plate 401; when the extraction tube 403 needs to be installed, the extraction tube 403 is inserted into the corresponding extraction port and the lower end of the extraction tube 403 is tightly attached to the bottom of the collection frame 404, pushing the second limit seat 416 to slide close to the first limit seat 415, so that the second limit seat 416 slides and the first limit seat 415 is attached to the side surface of the extraction tube 403, and the second limit seat 416 is slid and connected with the first limit seat 415 by bolts to realize the position limitation of the extraction tube 403.

[0066] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0067] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the content of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A solid phase extraction device for purifying and collecting pesticide residues, comprising a workbench, a liquid storage component (1) being rotatably provided on the surface of the workbench, characterized in that: The liquid storage assembly (1) comprises a rotatably arranged liquid storage support plate (101), a plurality of liquid storage tanks (102) are fixedly connected to the upper surface of the liquid storage support plate (101), a liquid collection pipe (103) is fixedly connected inside the liquid storage tank (102), and a first opening and closing fan blade (104) and a second opening and closing fan blade (105) are rotatably arranged inside the liquid collection pipe (103); The workbench surface is provided with a pipetting assembly (2), the pipetting assembly (2) comprising a rotatably arranged and up-and-down movable pipetting support plate (201), the pipetting support plate (201) having a pipetting port corresponding to the liquid storage tank (102) on its surface, a pipette (202) fixedly connected to the inside of the pipetting port, a pipette piston column (203) slidably arranged inside the pipette (202), and a pipetting docking block (204) fixedly connected to the upper surface of the pipetting piston column (203) via a docking column; The upper surface of the workbench is fixedly connected to a regulating assembly (3), and the regulating assembly (3) comprises two regulating transmission blocks symmetrically arranged for sliding, wherein one side of the regulating transmission block is fixedly connected to a liquid pushing plate (301), and the other side of the regulating transmission block is fixedly connected to a clamping transmission block (302), and one side of the clamping transmission block (302) is symmetrically arranged with two liquid-taking clamping claws (303); An extraction assembly (4) is rotatably provided on the surface of the workbench. The extraction assembly (4) comprises a rotatably provided extraction support plate (401) and an extraction control block (402) rotatably provided on the surface of the workbench. A plurality of extraction ports are provided on the surface of the extraction support plate (401). Extraction tubes (403) are slidably provided inside the extraction ports. A collection frame (404) is slidably provided below the extraction support plate (401). An annular guide rail (405) is fixedly connected to the lower surface of the collection frame (404). The extraction control block (402) is provided with a plurality of extraction ports. A lifting chute (406) is provided on the surface of the workbench, a lifting support block is fixedly connected to the upper surface of the workbench, and the lifting support block is rotatably connected to the lifting transmission connecting rods (407) on both sides relative to each other, and the two lifting transmission connecting rods (407) are fixedly connected, one end of one of the lifting transmission connecting rods (407) is fixedly connected to a first lifting transmission column (408) that is slidably matched with the annular guide rail (405), and one end of the other lifting transmission connecting rod (407) is fixedly connected to a second lifting transmission column (409) that is slidably matched with the lifting chute (406); The liquid storage assembly (1) further comprises a liquid storage support shaft rotatably arranged on the upper surface of the workbench, the liquid storage support shaft is fixedly connected to the liquid storage support plate (101), a first transmission wheel (106) is fixedly connected to the circumferential side of the liquid storage support shaft, and a second transmission wheel (107) is rotatably arranged on the lower surface of the workbench, and the second transmission wheel (107) is fixedly connected to the liquid storage support shaft; Two guide rails (108) are symmetrically fixedly connected to the upper surface of the liquid storage tank (102), a U-shaped transmission plate (109) is slidably arranged between the two guide rails (108), an opening and closing transmission opening is symmetrically opened on the surface of the U-shaped transmission plate (109), and a first return spring (110) is fixedly connected between the U-shaped transmission plate (109) and the upper surface of the liquid storage tank (102); One side of the first opening and closing fan blade (104) is fixedly connected to an opening and closing shaft, and the opening and closing shaft is rotatably connected to the liquid collection tube (103). One end of the opening and closing shaft that passes through the liquid collection tube (103) is fixedly connected to a first opening and closing disk (111). One side of the first opening and closing disk (111) close to the first opening and closing fan blade (104) is fixedly connected to a first opening and closing transmission column (112). One side of the second opening and closing fan blade (105) is fixedly connected to a plurality of opening and closing tubes, and the opening and closing tubes are sleeved on the side of the opening and closing shaft. One end of the opening and closing tube that passes through the liquid collection tube (103) is fixedly connected to a second opening and closing disk (113). One side of the second opening and closing disk (113) that is away from the second opening and closing fan blade (105) is fixedly connected to a second opening and closing transmission column (114), and the first opening and closing transmission column (112) and the second opening and closing transmission column (114) are respectively located inside the corresponding opening and closing transmission openings; The pipetting assembly (2) further comprises a hollow support seat (205) fixedly connected to the upper surface of the workbench, the peripheral side of the hollow support seat (205) is rotatably connected to a third transmission wheel (206), the third transmission wheel (206) is connected to the first transmission wheel (106) via a first transmission belt, and the peripheral side of the third transmission wheel (206) is fixedly connected to an arc-shaped transmission rack (207), and the upper surface of the third transmission wheel (206) is symmetrically fixedly connected to two limit branches (208); The lower surface of the pipetting support plate (201) is symmetrically and fixedly connected with two limit slide bars (209), and the limit slide bars (209) are slidably matched with the corresponding limit branches (208). The lower surface of the pipetting support plate (201) is fixedly connected with a pipetting support seat (210), and the lower surface of the pipetting support seat (210) is rotatably connected with an internal threaded tube (211), and the internal thread of the internal threaded tube (211) is matched with a driving screw (212); Two limiting support plates are symmetrically fixedly connected to the upper surface of the hollow support seat (205), a limiting tube (213) is fixedly connected between the two limiting support plates, and the limiting tube (213) is slidably engaged with the internal threaded tube (211); The driving screw (212) passes through one end of the workbench and is fixedly connected to a transmission bevel gear (214); the lower surface of the workbench is fixedly connected to an extension support plate; one side of the extension support plate is rotatably connected to a driving bevel gear (215) meshing with the transmission bevel gear (214); and the lower surface of the pipette (202) is fixedly connected to a downward pressure support plate (216) corresponding to the U-shaped transmission plate (109).

2. A solid phase extraction device for purification and collection of pesticide residues according to claim 1, characterized in that: The regulating assembly (3) further comprises an L-shaped support plate (304) fixedly connected to the upper surface of the workbench, one end of the L-shaped support plate (304) being fixedly connected to a regulating support plate (305), two regulating slideways being symmetrically provided on the surface of the regulating support plate (305), and the regulating transmission block being slidably arranged inside the corresponding regulating slideways; A clamping frame (306) is fixedly connected to one side of the regulating support plate (305), a trapezoidal regulating opening (307) is provided on the upper surface of the clamping frame (306), an upper end portion of the liquid collection clamping claw (303) is adapted to the trapezoidal regulating opening (307), a clamping support plate is fixedly connected to one side of the clamping transmission block (302) close to the liquid collection clamping claw (303), and arc springs (308) are fixedly connected between the two opposite side surfaces of the clamping support plate and the corresponding liquid collection clamping claws (303).

3. A solid phase extraction device for purification and collection of pesticide residues according to claim 2, characterized in that: The lower surface of the L-shaped support plate (304) is rotatably connected to a lifting adjustment column (309), and a lifting adjustment groove (310) is provided on the side surface of the lifting adjustment column (309), and the lifting adjustment groove (310) has a spiral groove at one end connected to the vertical groove; The other side of the regulating transmission block is fixedly connected to a regulating transmission column (311), and a horizontal transmission plate (312) is fixedly connected between the two regulating transmission columns (311). The other side of the regulating support plate (305) is provided with a lifting guide groove (313), and a lifting transmission block is slidably arranged inside the lifting guide groove (313). The lifting transmission block and the bottom of the lifting guide groove (313) are fixedly connected to a telescopic rod and a second return spring (314), and the second return spring (314) is sleeved on the outside of the telescopic rod. The horizontal transmission plate (312) is fixedly connected to the lifting transmission block, and a lifting transmission column is fixedly connected to one side of the horizontal transmission plate (312). The lifting transmission column and the lifting regulating groove (310) are slidably matched.

4. A solid phase extraction device for purification and collection of pesticide residues according to claim 3, characterized in that: The extraction assembly (4) further comprises an extraction support column rotatably connected to the upper surface of the workbench, two extraction limit bars (410) are symmetrically fixedly connected to the lateral sides of the extraction support column, and the extraction support column is fixedly connected to the extraction support plate (401); The collection frame (404) is slidably arranged on the extraction limit bar (410) and the side surface of the extraction support column. The side surface of the collection frame (404) is fixedly connected to a drainage branch pipe (411). The side surface of the extraction support column is fixedly connected to an extraction drive gear (412). The upper surface of the extraction drive gear (412) is rotatably connected to a drive ring. A third return spring (413) is fixedly connected between the drive ring and the annular guide rail (405). The upper surface of the workbench is rotatably connected to an extraction transmission gear (414) meshing with the extraction drive gear (412). The extraction transmission gear (414) is adapted to the arc-shaped transmission rack (207).

5. A solid phase extraction device for purification and collection of pesticide residues according to claim 4, characterized in that: A first limiting seat (415) corresponding one-to-one to the extraction tube (403) is fixedly connected to the upper surface of the extraction support plate (401), and a second limiting seat (416) corresponding one-to-one to the first limiting seat (415) is slidably provided on the upper surface of the extraction support plate (401), and the second limiting seat (416) is connected to the first limiting seat (415) by bolts; The lifting chute (406) is composed of a plurality of first horizontal troughs, an ascending trough, a second horizontal trough and a descending trough connected in sequence; the lower surface of the workbench is rotatably connected to an extraction drive disk; the extraction drive disk is fixedly connected to the extraction control block (402); the peripheral side of the extraction drive disk is fixedly connected to a plurality of arc-shaped drive racks (417); the lower surface of the workbench is rotatably connected to an adjusting gear (418) matched with the arc-shaped drive rack (417); the lower surface of the adjusting gear (418) is fixedly connected to a fourth transmission wheel (419); the fourth transmission wheel (419) is connected to the second transmission wheel (107) via a second transmission belt.

Images