Solid-phase extraction device for purifying and collecting pesticide residues

Abstract

The invention discloses a solid-phase extraction device for pesticide residue purification and collection, and relates to the technical field of pesticide residue solid-phase extraction. The device comprises a liquid storage assembly, a liquid transferring assembly, a regulation and control assembly and an extraction assembly, the liquid storage assembly comprises a liquid storage supporting disc, the upper surface of the liquid storage supporting disc is fixedly connected with a liquid storage tank, the liquid transferring assembly comprises a liquid transferring supporting disc, the surface of the liquid transferring supporting disc is fixedly connected with a liquid transferring pipe, and the regulation and control assembly comprises a liquid pushing plate and a liquid taking clamping claw. The extraction assembly comprises an extraction supporting disc and an extraction regulation and control block, and an extraction pipe is slidably arranged on the surface of the extraction supporting disc. The pipette supporting disc and the liquid storage supporting disc synchronously rotate, the pipette sequentially passes through the liquid taking station and the liquid discharging station, and when the liquid storage tank sequentially passes through the liquid taking station, the pipette supporting disc and the liquid storage supporting disc and rotates by a circle, the extraction supporting disc synchronously rotates by 72 degrees, so that position switching of the extraction pipe is realized, and batch automatic extraction is facilitated; the possibility of frequent reagent alternate 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 is convenient for enrichment, separation and purification of pesticide residues in samples, and 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 solution to avoid the influence of residual debris on relevant data.

[0003] Common solid phase extraction devices for pesticide residues in samples convert samples into sample reagents, and use a pipetting device to sequentially add activator, sample reagent, eluent and eluent into the extraction tube. During the application process, different pipetting devices are required to take liquids and transfer and drip reagents. The operation is cumbersome and it is easy for the pipetting device to take deviations, resulting in cross-infection of liquids. To this end, we provide a solid phase extraction device for pesticide residue purification and collection to solve the above technical problems. Summary of the invention

[0004] The object 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, the pipetting component, the regulating component and the extraction component.

[0005] To solve the above technical problems, the present invention is implemented 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 is rotatably arranged on the surface of the workbench, the liquid storage component comprises a rotatably arranged liquid storage support plate, a plurality of liquid storage tanks are fixedly connected to the upper surface of the liquid storage support plate, a liquid collection tube is fixedly connected inside the liquid storage tank, a first opening and closing fan blade and a second opening and closing fan blade are rotatably arranged inside the liquid collection tube; a liquid transfer component is arranged on the surface of the workbench, the liquid transfer component comprises a liquid transfer support plate which is rotatably arranged and can move up and down, The surface of the pipetting support plate is provided with a pipetting port corresponding to the liquid storage tank one by one, a pipette is fixedly connected inside the pipette port, a pipette piston column is slidably arranged inside the pipette, and the upper surface of the pipette piston column is fixedly connected to a pipetting docking block through a docking column; a regulating component is fixedly connected to the upper surface of the workbench, and the regulating component includes two regulating transmission blocks symmetrically slidably arranged, one side of the regulating transmission block 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 arranged with two liquid clamping claws.

[0006] An extraction component is rotatably arranged on the surface of the workbench, and the extraction component includes a rotatably arranged extraction support plate and an extraction control block rotatably arranged on the upper surface of the workbench, a plurality of extraction ports are provided on the surface of the extraction support plate, and extraction tubes are slidably arranged inside the extraction ports, a collection frame is slidably arranged under the extraction support plate, an annular guide rail is fixedly connected to the lower surface of the collection frame, a lifting slide groove is provided on the peripheral side surface of the extraction control block, a lifting support block is fixedly connected to the upper surface of the workbench, and the control support block is rotatably connected to lifting transmission connecting rods on both relative side surfaces, 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 slidably matched with the annular guide rail, and one end of the other lifting transmission connecting rod is fixedly connected to a second lifting transmission column slidably matched 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 surface 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 present invention is further configured as follows, wherein the upper surface of the liquid storage tank is symmetrically fixedly connected with two guide rails, and a U-shaped transmission plate is slidably arranged between the two guide rails, and an opening and closing transmission opening 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 with an opening and closing shaft, and the opening and closing shaft is rotatably connected to the liquid extraction pipe, and one end of the opening and closing shaft passes through the liquid extraction pipe and is fixedly connected to the first opening and closing disk, and a side surface of the first opening and closing disk close to the first opening and closing fan blade is fixedly connected to the first opening and closing transmission column, and a side surface of the second opening and closing fan blade is fixedly connected to a plurality of opening and closing tubes, and the opening and closing tubes are sleeved on the side surface of the opening and closing shaft, and one end of the opening and closing tube passes through the liquid extraction pipe and is fixedly connected to the second opening and closing disk, and a 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 column, and the first opening and closing transmission column and the second opening and closing transmission column are respectively located inside the corresponding opening and closing transmission opening.

[0009] The present invention is further configured such that 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 is connected to the first transmission wheel by a first transmission belt, and the peripheral side surface of the third transmission wheel is fixedly connected to an arc-shaped transmission rack, and the upper surface of the third transmission wheel is symmetrically fixedly connected to two limit branches; two limit slide bars are symmetrically fixedly connected to the lower surface of the pipetting support plate, the limit slide bars are slidably matched with the corresponding limit branches, and the lower surface of the pipetting support plate is fixedly connected to a pipetting support seat, the lower surface of the pipetting support seat is rotatably connected to an internally threaded tube, and the internal thread of the internally threaded tube is matched 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 is slidably matched with the internal threaded tube; 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 slides; a clamping frame is fixedly connected to one side of the regulating support plate, a trapezoidal regulating opening is provided on the upper surface of the clamping frame, the upper end of the liquid taking clamping claw is adapted to the trapezoidal regulating opening, a side of the clamping transmission block close to the liquid taking clamping claw is fixedly connected to a clamping support plate, and an arc spring is fixedly connected between the two opposite side surfaces of the clamping support plate and the corresponding liquid taking clamping claws.

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

[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, the extraction support column is symmetrically and fixedly connected with two extraction limit bars on the peripheral side surface, and the extraction support column is fixedly connected to the extraction support disk; and the collection frame is slidably arranged on the extraction limit bars and the peripheral side surface of the extraction support column, the collection frame is fixedly connected with a drainage branch pipe on the peripheral side surface, the extraction support column is fixedly connected with an extraction drive gear on the peripheral side surface, the extraction drive gear is rotatably connected with a driving ring on the upper surface, a third reset spring is fixedly connected between the driving disk and the annular guide rail, and the upper surface of the workbench is rotatably connected with 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 as follows: a first limit seat corresponding to the extraction tube is fixedly connected to the upper surface of the extraction support plate, a second limit seat corresponding to the first limit seat is slidably arranged on the upper surface of the extraction support plate, and the second limit seat is connected to the first limit seat by bolts; the lifting slide groove is composed of a plurality of first horizontal grooves, an ascending groove, a second horizontal groove and a descending groove connected in sequence, an extraction driving disk is rotatably connected to the lower surface of the workbench, the extraction driving disk 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 disk, an adjusting gear matched with the arc-shaped driving rack is rotatably connected to the lower surface of the workbench, a fourth transmission wheel is fixedly connected to the lower surface of the adjusting gear, and the fourth transmission wheel is connected to the second transmission wheel by a second transmission belt.

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

[0016] 2. The present invention provides 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 the installation and disassembly of the extraction tube, reducing the extraction tube switching process and improving the batch extraction efficiency.

[0017] 3. The present invention sets an extraction component to drive the extraction control block to rotate, so that the second lifting transmission column slides along the lifting slot. When it is restricted by the lifting slot, the second lifting transmission column moves up and down, driving the two lifting transmission connecting rods to rotate, thereby making the first lifting transmission column move up and down synchronously, and making the collection frame move up and down synchronously, thereby realizing the control of the closing and opening of the lower end of the extraction tube in turn, and realizing the automated liquid shooting process.

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

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0020] Figure 1 This is a schematic diagram of the structure of a solid phase extraction device used for purification and collection of pesticide residues.

[0021] Figure 2 It is a structural schematic diagram from another angle of the present invention.

[0022] Figure 3 It is a schematic top view of part of the structure of the present invention.

[0023] Figure 4 It is a schematic diagram of the structure of the liquid storage component in the present invention.

[0024] Figure 5 It is a partial structural schematic diagram of the liquid storage component in the present invention.

[0025] Figure 6 It is a schematic diagram of the structure of the liquid transfer component in the present invention.

[0026] Figure 7 It is a schematic diagram of the structure of the liquid transfer component in the present invention from another angle.

[0027] Figure 8 It is a longitudinal structural cross-sectional view of the liquid transfer assembly in the present invention.

[0028] Fig. 9 It is a schematic diagram of the structure of the regulating component in the present invention.

[0029] Fig.10 It is a longitudinal structural cross-sectional view of the regulating component in the present invention.

[0030] Fig.11 for Fig.10 A local enlarged schematic diagram of point A in the middle.

[0031] Fig.12 It is a schematic diagram of the structure of the extraction component in the present invention.

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

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

[0034] In the accompanying drawings, the components represented by the reference numerals are listed as follows: 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-liquid transfer assembly, 201-liquid transfer Support plate, 202-pipette, 203-pipette piston column, 204-pipette docking block, 205-hollow support seat, 206-third transmission wheel, 207-arc 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 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 and adjusting column, 310-lifting and adjusting groove, 311-regulating transmission column, 312-horizontal transmission plate, 313-lifting and guiding groove, 314-second reset 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 strip, 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 drive rack, 418-adjusting gear, 419-fourth transmission wheel. DETAILED DESCRIPTION

[0035] 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.

[0036] 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 arranged on the surface of the workbench. The liquid storage component 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. 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 agent, two washing agents and eluent, and a liquid collection tube 103 is fixedly connected to the liquid storage tank 102, and the liquid collection tube 103 fits with the bottom of the liquid storage tank 102 to facilitate the absorption of the reagents in 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 tube 103, and the first opening and closing fan blade 104 and the second opening and closing fan blade 105 constitute a closed disc, and fit with the inner wall of the liquid collection tube 103 to keep the liquid collection tube 103 closed.

[0037] Furthermore, a pipetting assembly 2 is provided on the surface of the workbench, and the pipetting assembly 2 includes a rotatable and up-and-down movable pipetting support plate 201, a pipetting port corresponding to the liquid storage tank 102 is provided 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, the piston block is in contact with the inner wall of the pipette 202, and the upper surface of the pipetting piston column 203 is fixedly connected to a pipetting docking block 204 via a docking column.

[0038] Further, the upper surface of the workbench is fixedly connected with a regulating component 3, and the regulating component 3 includes two regulating transmission blocks symmetrically slidably arranged, wherein one side of the regulating transmission block is fixedly connected with a liquid pushing plate 301, and the area corresponding to the lower side of the liquid pushing plate 301 is a liquid discharge station (i.e., the area where the transfer support plate 201 and the liquid storage support plate 101 overlap, such as Figure 3As shown in FIG. 1 ), a clamping transmission block 302 is fixedly connected to one side of the other regulating transmission block, and two liquid-taking clamping claws 303 are symmetrically arranged on one side of the clamping transmission block 302, and the area corresponding to the lower side of the liquid-taking clamping claws 303 is a liquid-taking station (as shown in FIG. 1 ). Figure 3 as shown).

[0039] Furthermore, an extraction component 4 is rotatably arranged on the surface of the workbench, and the extraction component 4 includes a rotatably arranged extraction support plate 401 and an extraction control block 402 rotatably arranged on the upper surface of the workbench. A plurality of extraction ports are opened on the surface of the extraction support plate 401, and extraction tubes 403 are slidably arranged inside the extraction ports. The number of extraction tubes 403 is consistent with that of the pipette 202 and the liquid storage tank 102. The extraction support plate 401 is located below the liquid transfer support plate 201, and the two have a certain overlap area, which can satisfy that the extraction support plate 401 and the pipette 202 and the corresponding extraction tube 403 are coaxially overlapped up and down (that is, the corresponding position of the liquid collection station), and a collection frame 404 is slidably arranged below the extraction support plate 401, and the 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 and 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 with an annular guide rail 405. A lifting slide groove 406 is provided on the side surface of the extraction control block 402. A lifting support block is fixedly connected to the upper surface of the workbench. The control support block is rotatably connected with lifting transmission connecting rods 407 on both sides relative to each other. The two lifting transmission connecting rods 407 are fixedly connected. One end of one of the lifting transmission connecting rods 407 is fixedly connected with a first lifting transmission column 408 that slides with the annular guide rail 405, and the other end of the lifting transmission connecting rod 407 is fixedly connected with a second lifting transmission column 409 that slides with the lifting slide groove 406.

[0040] The operation process of this embodiment is as follows: in the initial state, the corresponding pipette 202 first absorbs the corresponding reagent (that is, the pipette 202 at A1 absorbs the activating agent, the pipette 202 at B1 absorbs the sample reagent, and the pipette 202 at C1 absorbs the washing agent, such as 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: When the pipette extraction tube part 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 filled with the activator at A1 is coaxial with the extraction tube 403, the two regulating transmission blocks are controlled to move downward synchronously, and the push plate 301 and the clamping transmission block 302 move downward synchronously. When the push plate 301 fits the pipette docking block 204 above the pipette 202 at A1, as the push plate 301 continues to move downward, the pipette piston column 203 moves downward synchronously and discharges the activator inside the pipette 202, and 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, and 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, and 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 regulating transmission blocks are controlled to move upward synchronously, and 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.

[0041] 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 down the annular guide rail 405, driving the collection frame 404 to move downward, and the activator in the extraction tube 403 flows into the collection frame 404 and is discharged. The pipetting support plate 201 and the liquid storage support plate 101 rotate synchronously by 72°, so that the pipette 202 at E1 and the liquid storage tank 102 at E2 rotate synchronously, and the two coaxial centers overlap each other. The two lifting and discharging parts 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 to drive 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. 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 closed state. The liquid collection and liquid 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.

[0042] The pipetting support plate 201 and the liquid storage support plate 101 are controlled to rotate synchronously again, and the operation is circulated so that the pipetting support plate 201 and the liquid storage support plate 101 rotate 216° (that is, 3 times of 72°, so that the pipette 202 originally at E1 is located at the discharge station), and the extraction tube 403 directly below the discharge station is injected with washing agent twice in sequence, and the pipette 202 originally at E1 is moved and located at the discharge 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 discharge 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 discharge station. At this time, the pipette 202 originally at E1 returns to its initial state, so as to perform the next extraction operation.

[0043] 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.

[0044] Furthermore, 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 provided on the surface of the U-shaped transmission plate 109, and the opening and closing transmission opening is respectively provided on the two vertical sections of the U-shaped transmission plate 109, and a first reset 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, the opening and closing shaft is rotatably connected to the liquid collection tube 103, one end of the opening and closing shaft passing through the liquid collection tube 103 is fixedly connected to a first opening and closing disk 111, and a side of the first opening and closing disk 111 close to the first opening and closing fan blade 104 is fixedly connected to the first opening and closing transmission The movable column 112 and one side of the second opening and closing fan blade 105 are fixedly connected with a plurality of opening and closing tubes, the opening and closing tubes are sleeved on the side of the opening and closing axis, one end of the opening and closing tube passes through the liquid extraction tube 103 and is fixedly connected with the second opening and closing disk 113, and the side of the second opening and closing disk 113 away from the second opening and closing fan blade 105 is fixedly connected with the second opening and closing transmission column 114, 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.

[0045] Furthermore, the pipetting component 2 also includes a hollow support seat 205 fixedly connected to the upper surface of the workbench, and the third transmission wheel 206 is rotatably connected to the side surface of the hollow support seat 205. The third transmission wheel 206 is connected to the first transmission wheel 106 through a first transmission belt, and an arc-shaped transmission rack 207 is fixedly connected to the side surface of the third transmission wheel 206, and two limiting branches 208 are symmetrically fixedly connected to the upper surface of the third transmission wheel 206; two limiting slide bars 209 are symmetrically fixedly connected to the lower surface of the pipetting support plate 201, and the limiting slide bars 209 slide along the corresponding limiting branches 208 to keep the pipetting support plate 201 moving up and down stably, and the limiting slide bars 209 are slidably matched with the corresponding limiting branches 208, and a pipetting support seat 210 is fixedly connected to the lower surface of the pipetting support plate 201, and an internal threaded tube 211 is rotatably connected to the lower surface of the pipetting support seat 210, and the internal thread of the internal threaded tube 211 is matched with a driving screw 212.

[0046] Furthermore, two limit support plates are symmetrically fixedly connected to the upper surface of the hollow support seat 205, and a limit tube 213 is fixedly connected between the two limit support plates. The limit tube 213 and the internal threaded tube 211 are slidably matched. Under the sliding cooperation between the limit tube 213 and the side surface of the internal threaded tube 211, the internal threaded tube 211 can be kept to move vertically up and down; one end of the driving screw 212 passing through the workbench is fixedly connected to a transmission bevel gear 214, and 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 214. A driving bevel gear 215 meshing with the gear 214, and a first driving motor is fixedly installed on the other side of the extended support plate, and the output shaft of the first driving motor is fixedly connected to the driving bevel gear 215, and a downward pressure support plate 216 corresponding to the U-shaped transmission plate 109 is fixedly connected to the lower surface of the pipette 202, and 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 are coaxially coincident above and below, the downward pressure support plate 216 is located directly above the corresponding U-shaped transmission plate 109.

[0047] The operation process of this embodiment is as follows: in the initial state, the pipettes 202 at A1, B1, C1 are respectively loaded with an activating agent, a sample reagent and an eluting reagent, 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, and the driving bevel gear 215 is driven to rotate, and 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, and under the thread cooperation action 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 with the corresponding U-shaped transmission plate 109. As the pipetting support plate 201 continues to move downward, the downward pressing support plate 216 presses 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, and 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. 1 ), the first opening and closing 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. 1 ). Figure 5As shown), the second opening and closing fan blade 105 rotates synchronously clockwise, thereby causing the first opening and closing fan blade 104 and the second opening and closing fan blade 105 to rotate closer to each other, the liquid collection tube 103 is opened, and the pipette extraction tube part of the pipette 202 is located inside the liquid collection tube 103.

[0048] When the liquid collection and discharge operations are completed, the first transmission wheel 106 is controlled to rotate 72°, and under the connection of the first transmission belt, the third transmission wheel 206 is driven to rotate 72° synchronously, so that 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 E2 and the pipette 202 at E1 are synchronously rotated to the liquid collection station, the upper and lower coaxial centers of the two coincide with each other, and the pipette 202 at B1 is rotated to the discharge station.

[0049] For specific embodiment 3, please refer to Figure 9-14 On the basis of the first and second specific embodiments, specifically, the regulating component 3 also includes 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 to a regulating support plate 305, two regulating slides are symmetrically provided on the surface of the regulating support plate 305, and the regulating transmission block is slidably arranged inside the corresponding regulating slides; 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, the upper end of the liquid taking clamping claw 303 is adapted to the trapezoidal regulating opening 307, the upper end of the liquid taking clamping claw 303 is a bent structure and the lower surface is an inclined sliding surface structure, a side of the clamping transmission block 302 close to the liquid taking clamping claw 303 is fixedly connected to a clamping support plate, and an arc spring 308 is fixedly connected between the two opposite sides of the clamping support plate and the corresponding liquid taking clamping claw 303.

[0050] Furthermore, a lifting adjustment column 309 is rotatably connected to the lower surface of the L-shaped support plate 304, and a lifting adjustment groove 310 is opened on the side of the lifting adjustment column 309. The lifting adjustment groove 310 has a spiral groove at one end connected to the vertical groove. A second drive motor is fixedly installed on the upper surface of the L-shaped support plate 304, and the output shaft of the second drive motor is fixedly connected to the lifting adjustment column 309; a regulating transmission column 311 is fixedly connected to the other side of the regulating transmission block, and a horizontal transmission plate 312 is fixedly connected between the two regulating transmission columns 311; a lifting guide groove 313 is opened on the other side of the regulating support plate 305, and the lifting guide groove 313 A lifting transmission block is provided internally for sliding movement. A telescopic rod and a second return spring 314 are fixedly connected to the lifting transmission block and the bottom of the lifting guide groove. The second return spring 314 is sleeved on the outside of the telescopic rod, and the horizontal transmission plate 312 is fixedly connected to the lifting transmission block 313. A lifting transmission column is fixedly connected to one side of the horizontal transmission plate 312. The lifting transmission column and the lifting control groove 310 are slidably matched. The lifting adjustment column 309 rotates under the sliding cooperation between the lifting transmission column and the lifting control groove 310. When the lifting transmission column moves along the spiral groove section of the lifting control groove 310, it drives the horizontal transmission plate 312 to move downward.

[0051] Furthermore, the extraction component 4 also includes an extraction support column rotatably connected to the upper surface of the workbench, and two extraction limit bars 410 are symmetrically fixedly connected to the side surfaces of the extraction support column, and the extraction support column is fixedly connected to the extraction support disk 401; and the collection frame 404 is slidably arranged on the extraction limit bars 410 and the side surfaces of the extraction support column, and a drainage branch pipe 411 is fixedly connected to the side surfaces of the collection frame 404, and an extraction drive gear 412 is fixedly connected to the side surfaces of the extraction support column, and a driving ring is rotatably connected to the upper surface of the extraction drive gear 412, and a third reset spring 413 is fixedly connected between the driving disk and the annular guide rail 405, and an extraction transmission gear 414 meshing with the extraction drive gear 412 is rotatably connected to the upper surface of the workbench, and the extraction transmission gear 414 is adapted to the arc-shaped transmission rack 207.

[0052] 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 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, so as to keep the extraction tube 403 in a fixed position; the lifting slide 406 is composed of a plurality of first horizontal grooves, an ascending groove, a second horizontal groove and a descending groove connected in sequence, and 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 with an extraction drive disk, 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 frame, 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 two adjacent arc-shaped drive racks 417; the lower surface of the workbench is rotatably connected with an adjusting gear 418 that matches the arc-shaped drive rack 417, the lower surface of the adjusting gear 418 is fixedly connected with a fourth transmission wheel 419, and the fourth transmission wheel 419 is connected to the second transmission wheel 107 through a second transmission belt.

[0053] The operation process of this embodiment is as follows: in the initial state, the corresponding pipette 202 first absorbs the corresponding reagent (that is, the pipette 202 at A1 absorbs the activating agent, the pipette 202 at B1 absorbs the sample reagent, and the pipette 202 at C1 absorbs the washing agent, such as Figure 3 As shown in the figure, when the pipetting support plate 201 moves downward and the pipetting extraction tube of the pipette 202 is located inside the liquid collection tube 103, the second driving motor is started to drive the lifting and adjusting column 309 to rotate. As the lifting and adjusting column 309 rotates, the lifting transmission column slides along the spiral groove section of the lifting and adjusting groove 310, thereby driving the horizontal transmission plate 312 to move downward, and the lifting transmission block slides downward synchronously along the lifting guide groove 313. The telescopic rod and the second return spring 314 are compressed. Under the connection action of the regulating transmission column 311, the two regulating 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 fits the liquid docking block 204 above the pipette 202 at A1, as the liquid pushing plate 301 continues to move downward, the pipetting 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 realizing the liquid discharge process in sequence.

[0054] During this process, the clamping transmission block 302 moves downward synchronously with the regulating transmission block. 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, the arc spring 308 is stretched, and the clamping transmission block 302 continues to move downward. When the liquid collection clamping claw 303 is separated from the pipetting docking block 204, the external force disappears. Under the elastic recovery effect of the arc spring 308, the liquid collection clamping claw 303 rotates in the opposite direction to grab the pipetting docking block 204. At this time, the lifting transmission column moves to the end of the spiral groove (that is, the end of the spiral groove close to the vertical groove, and the second reset spring 314 is completely compressed), and continues to rotate with the lifting adjustment column 309. The lowering transmission column is located inside the vertical groove. Under the elastic recovery action of the second reset 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 regulating transmission block to move upward synchronously, so that the liquid collection clamping claw 303 drives the corresponding liquid transfer docking block 204 to move upward, and the liquid transfer piston column 203 at D1 moves upward synchronously to extract the eluent inside the liquid storage tank 102 directly below D1, and the liquid collection operation is realized in turn. The liquid collection clamping claw 303 contacts the trapezoidal regulating port 307, and as the liquid collection clamping claw 303 continues to move upward, the two liquid collection clamping claws 303 rotate under the restriction of the trapezoidal regulating port 307, and the arc spring 308 is stretched until the liquid collection clamping claw 303 is separated from the corresponding liquid transfer docking block 204, thereby completing the liquid collection operation.

[0055] During the process of taking 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 inside of the first horizontal groove, the collection frame 404 is fitted with the lower end of the extraction tube 403, and the extraction tube 403 remains sealed. When the liquid taking and discharging operations are completed (the second lifting transmission column 409 is located on 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 in the opposite direction. Under the meshing action of the driving bevel gear 215 and the transmission bevel gear 214, the driving screw 212 rotates in the opposite direction. Under the thread cooperation action of the driving screw 212 and the internal threaded tube 211, the internal threaded tube 211 is moved along the limiting tube 213 to the inner threaded tube 211. The second lifting transmission column 409 slides upward, thereby driving the pipetting support plate 201 to move upward synchronously. At this time, the second lifting transmission column 409 slides along the descending groove. The second lifting transmission column 409 is restricted by the descending groove and gradually moves downward, 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 down the annular guide rail 405, driving the collecting frame 404 to move downward, and the collecting frame 404 is away from the lower end of the extraction tube 403, so that the lower end of the extraction tube 403 is opened, and the activator inside the extraction tube 403 flows into the collecting frame 404, and is discharged into the corresponding waste liquid collection equipment along the drainage branch pipe 411.

[0056] At the same time, the extraction control block 402 rotates to drive the extraction drive disk to rotate synchronously, and the arc-shaped drive rack 417 moves synchronously with the extraction drive disk. 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), one of the arc-shaped drive racks 417 is meshed with the adjustment gear 418. As the extraction control block 402 continues to rotate, 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. At the same time, under the meshing action of the arc-shaped drive rack 417 and the adjustment gear 418, the adjustment gear 418 rotates 72°, thereby driving the fourth transmission wheel 419 to rotate synchronously. Under the connection action of the second transmission belt , so that the second transmission wheel 107 rotates synchronously by 72°, the first transmission wheel 106 and the liquid storage support plate 101 rotate synchronously by 72°, and under the connection action of the first transmission belt, the third transmission wheel 206 rotates synchronously by 72° with the first transmission wheel 106, so that 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 by 72°, so that the liquid storage tank 102 at the original E2 and the pipette 202 at the original E1 rotate synchronously to the liquid collection station, and the two coincide with each other on the upper and lower coaxial centers, and the pipette 202 at the original B1 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).

[0057] 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, and 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 inner bottom of the collection frame 404 fits with the lower end of the extraction tube 403, and the extraction tube 403 remains in a closed state.

[0058] By rotating the lifting adjustment column 309, the liquid pushing plate 301 and the liquid taking clamping claw 303 are driven to move downward synchronously, and the liquid pushing plate 301 discharges the pipette 202 at the original B1, and the sample reagent enters the extraction tube 403. The liquid pushing plate 301 and the liquid taking clamping claw 303 move upward synchronously, and the liquid taking clamping claw 303 lifts the pipette piston column 203 corresponding to the pipette 202 at the original E1, thereby realizing the liquid taking operation of the eluent inside the liquid storage tank 102 at the original E2. During this process, the second lifting transmission column 409 slides along the first horizontal groove, and the extraction tube 403 remains closed and absorbs the substances in the sample reagent.

[0059] The pipetting support plate 201 is controlled to move upward, the second lifting transmission column 409 slides along the descending groove, the collecting 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 collecting frame 404 and is discharged into the corresponding waste liquid collection device along the drainage branch pipe 411.

[0060] 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 meshes with the adjusting gear 418, and the second lifting transmission column 409 slides along the second horizontal groove, the collecting frame 404 remains away from the extraction tube 403, and the activating agent 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 transfer support plate 201 respectively drive the liquid storage tank 102 and the transfer pipette 202 to rotate 72°, so that the liquid storage tank 102 at the original position D2 The pipette 202 originally at A1 is synchronously rotated to the liquid collection station, and the two overlap with each other on the same axis, and the pipette 202 originally at C1 is rotated 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), and the liquid collection and discharge operations are performed here, 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 the substances except pesticide residues in the extraction tube 403; the pipette support plate 201 moves up, and the second lifting transmission column 409 slides along the descending groove, and the waste liquid after elution flows to the inside of the collection frame 404, and is discharged into the corresponding waste liquid collection equipment along the drainage branch pipe 411.

[0061] In this cycle, when the liquid storage support plate 101 and the pipetting support plate 201 are rotated 144° again (i.e., twice 72°, and two more liquid collection and discharge operations are completed), the pipette 202 originally at D1 and the pipette 202 originally at E1 are moved to the liquid discharge station, and the eluent and elution agent inside them are sequentially injected into the extraction tube 403, 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 collecting 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 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, respectively.

[0062] When 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 liquid transfer support plate 201 rotate four times by 72°), the arc-shaped transmission rack 207 meshes with the extraction transmission gear 414, and as the liquid storage support plate 101 and the liquid transfer support plate 201 continue to rotate 72° (i.e., the liquid storage support plate 101 and the liquid transfer 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, and the extraction transmission gear 414 rotates 72° under the meshing action of the extraction transmission gear 414 and the extraction drive gear 412, and the extraction drive gear 412 is driven to rotate 72°, thereby causing the extraction support plate 401 to rotate synchronously by 72°, so that the extraction tube 403 originally located at B3 rotates to the bottom of the liquid discharge station, so as to facilitate the next solid phase extraction operation.

[0063] After the solid phase extraction is completed, the extracted extraction tube 403 is rotated away from the discharge station, and the connection between the first limit seat 415 and the second limit seat 416 is canceled by manually rotating 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, and the second limit seat 416 is pushed to slide and approach 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 the first limit seat 415 is connected by bolts to realize the position limitation of the extraction tube 403.

[0064] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0065] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. 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, on the surface of which a liquid storage component (1) is rotatably arranged, characterized in that: The liquid storage assembly (1) comprises a rotatably arranged liquid storage support plate (101), a plurality of liquid storage tanks (102) being fixedly connected to the upper surface of the liquid storage support plate (101), a liquid collection tube (103) being 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) being rotatably arranged inside the liquid collection tube (103); A liquid transfer assembly (2) is arranged on the surface of the workbench, and the liquid transfer assembly (2) comprises a liquid transfer support plate (201) which is rotatably arranged and can move up and down, and a liquid transfer port corresponding to the liquid storage tank (102) is opened on the surface of the liquid transfer support plate (201), a liquid transfer tube (202) is fixedly connected inside the liquid transfer port, a liquid transfer piston column (203) is slidably arranged inside the liquid transfer tube (202), and a liquid transfer docking block (204) is fixedly connected to the upper surface of the liquid transfer piston column (203) via a docking column; The upper surface of the workbench is fixedly connected with a regulating component (3), the regulating component (3) comprising two regulating transmission blocks symmetrically slidably arranged, one side of one of the regulating transmission blocks being fixedly connected with a liquid pushing plate (301), and the other side of the regulating transmission block being fixedly connected with a clamping transmission block (302), and one side of the clamping transmission block (302) being symmetrically rotatably arranged with two liquid taking clamping claws (303); An extraction component (4) is rotatably arranged on the surface of the workbench, and the extraction component (4) comprises an extraction support plate (401) rotatably arranged and an extraction control block (402) rotatably arranged on the 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 arranged inside the extraction ports, a collection frame (404) is slidably arranged below the extraction support plate (401), and a ring guide rail (405) is fixedly connected to the lower surface of the collection frame (404), and the extraction control block (402) is rotatably arranged on the circumference thereof. A lifting groove (406) is provided on the surface, a lifting support block is fixedly connected to the upper surface of the workbench, and the regulating support block is rotatably connected to 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 slidably cooperates with the annular guide rail (405), and the other end of the lifting transmission connecting rod (407) is fixedly connected to a second lifting transmission column (409) that slidably cooperates with the lifting groove (406).

2. A solid phase extraction device for purifying and collecting pesticide residues according to claim 1, characterized in that: 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 being fixedly connected to the liquid storage support plate (101), a first transmission wheel (106) being fixedly connected to the circumferential side surface of the liquid storage support shaft, and a second transmission wheel (107) being rotatably arranged on the lower surface of the workbench, the second transmission wheel (107) being fixedly connected to the liquid storage support shaft.

3. A solid phase extraction device for purifying and collecting pesticide residues according to claim 2, characterized in that: The upper surface of the liquid storage tank (102) is symmetrically and fixedly connected with two guide rails (108); 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 openings; 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); A side surface of the first opening and closing fan blade (104) is fixedly connected to an opening and closing shaft, the opening and closing shaft is rotatably connected to the liquid collection tube (103), one end of the opening and closing shaft passing through the liquid collection tube (103) is fixedly connected to a first opening and closing disk (111), a side surface 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), a side surface of the second opening and closing fan blade (105) is fixedly connected to a plurality of opening and closing tubes, the opening and closing tubes are sleeved on the side surfaces of the opening and closing shaft, one end of the opening and closing tube passing through the liquid collection tube (103) is fixedly connected to a second opening and closing disk (113), a side surface of the second opening and closing disk (113) 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 corresponding opening and closing transmission ports.

4. A solid phase extraction device for purifying and collecting pesticide residues according to claim 3, characterized in that: The pipetting assembly (2) further comprises a hollow support seat (205) fixedly connected to the upper surface of the workbench, a third transmission wheel (206) being rotatably connected to the peripheral side surface of the hollow support seat (205), the third transmission wheel (206) being connected to the first transmission wheel (106) via a first transmission belt, and an arc-shaped transmission rack (207) being fixedly connected to the peripheral side surface of the third transmission wheel (206), and two limit branch pipes (208) being symmetrically fixedly connected to the upper surface of the third transmission wheel (206); 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 branch pipes (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).

5. A solid phase extraction device for purifying and collecting pesticide residues according to claim 4, characterized in that: Two limit support plates are symmetrically fixedly connected to the upper surface of the hollow support seat (205), a limit tube (213) is fixedly connected between the two limit support plates, and the limit tube (213) is slidably matched with the internal threaded tube (211); One end of the driving screw rod (212) passing through the workbench 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 pressing support plate (216) corresponding to the U-shaped transmission plate (109).

6. A solid phase extraction device for purifying and collecting pesticide residues according to claim 5, 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 of the liquid collection clamping claw (303) is matched with 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); 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).

7. A solid phase extraction device for purifying and collecting pesticide residues according to claim 6, 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), 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), a lifting transmission block is slidably arranged inside the lifting guide groove (313), a telescopic rod and a second return spring (314) are fixedly connected between the lifting transmission block and the bottom of the lifting guide groove, the second return spring (314) is sleeved on the outside of the telescopic rod, and the horizontal transmission plate (312) and the lifting transmission block (313) are fixedly connected, a lifting transmission column is fixedly connected to one side of the horizontal transmission plate (312), and the lifting transmission column is slidably matched with the lifting regulating groove (310).

8. A solid phase extraction device for purifying and collecting pesticide residues according to claim 7, 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 side surface 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 peripheral side of the extraction support column; the peripheral side of the collection frame (404) is fixedly connected to a drainage branch pipe (411); the peripheral side 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 disk 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 fit the arc-shaped transmission rack (207).

9. A solid phase extraction device for purifying and collecting pesticide residues according to claim 8, 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) via bolts; The lifting slide groove (406) is composed of a plurality of first horizontal grooves, an ascending groove, a second horizontal groove and a descending groove connected in sequence; an extraction drive disk is rotatably connected to the lower surface of the workbench; the extraction drive disk is fixedly connected to the extraction control block (402); a plurality of arc-shaped drive racks (417) are fixedly connected to the peripheral side surface of the extraction drive disk; an adjustment gear (418) matched with the arc-shaped drive rack (417) is rotatably connected to the lower surface of the workbench; a fourth transmission wheel (419) is fixedly connected to the lower surface of the adjustment gear (418); and the fourth transmission wheel (419) is connected to the second transmission wheel (107) via a second transmission belt.

Images