CN206184043U - Arm -type solid -phase extraction appearance of machinery - Google Patents
Arm -type solid -phase extraction appearance of machinery Download PDFInfo
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- CN206184043U CN206184043U CN201621055759.0U CN201621055759U CN206184043U CN 206184043 U CN206184043 U CN 206184043U CN 201621055759 U CN201621055759 U CN 201621055759U CN 206184043 U CN206184043 U CN 206184043U
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Abstract
The utility model provides an arm -type solid -phase extraction appearance of machinery, its includes syringe pump and syringe needle, the syringe pump utilizes a motor drive, and its characterized in that is provided with quantitative liquid storage pipe between syringe pump and the syringe needle. The utility model provides an arm -type solid -phase extraction appearance of machinery can not infect by cross.
Description
Technical field
Utility model is related to a kind of mechanical arm type solid-phase extracting instrument, more particularly to one kind to be avoided that cross-infection mechanical arm type
Solid-phase extracting instrument.
Background technology
In the prior art, solid-phase extracting instrument includes syringe pump and injection needle, and syringe pump includes empty cylinder, piston and pull bar,
Empty cylinder is preferably cylindrical drum, and the first end connecting line of empty cylinder, another end opening, piston is placed in empty cylinder, and piston is connected to and pushes away
Pull bar, when pull bar band piston moves to empty cylinder top, injection needle works as pull bar from suction solution in test tube to blank pipe
Band piston is when moving to empty cylinder bottom, the liquid in blank pipe through being discharged in injection needle in SPE posts, due to solution directly being taken out
Enter in blank pipe, and discharged from blank pipe, it is easy to cause cross-infection.
The content of the invention
In order to overcome shortcoming present in prior art, goal of the invention of the present utility model to be to provide a kind of mechanical arm type and consolidate
Phase abstraction instrument, it is avoided that cross-infection.
To realize the utility model purpose, the utility model provides a kind of mechanical arm type solid-phase extracting instrument, including injection
Pump and injection needle, the syringe pump are driven using the first motor, it is characterised in that be provided between syringe pump and injection needle quantitative
Liquid storage pipe.
Preferably, mechanical arm type solid-phase extracting instrument also includes the first reversal valve, and it has first port, second port and the
Three ports, wherein, first port is connected to syringe pump, and second port is connected to fluid reservoir, and the 3rd port is connected to injection needle.
Preferably, mechanical arm type solid-phase extracting instrument also includes the second reversal valve, and it has first port, second port and the
Three ports, wherein, first port is connected to the 3rd port of the first reversal valve, and second port is connected to air accumulator, the 3rd port
It is connected to injection needle.
Preferably, mechanical arm type solid-phase extracting instrument also includes the 3rd reversal valve, and it has first port, second port and the
Three ports, wherein, first port is connected to the 3rd port of the second reversal valve, and second port is connected to the external world, and the 3rd port connects
It is connected to injection needle.
Preferably, mechanical arm type solid-phase extracting instrument also includes control system, and the control system is used to control the first motor
Drive, the first working condition for changing valve, the second reversal valve and/or the 3rd reversal valve.
Preferably, mechanical arm type solid-phase extracting instrument also includes three shaft mechanical arms, the second motor, the 3rd motor and the 4th electricity
Machine, the three shaft mechanicals arm includes X arms, Y arms and Z arms, and screw mandrel is provided with Z arms, and sliding block, second electricity are provided with screw mandrel
Machine drives sliding block to be moved up and down along screw mandrel；3rd motor drives Z arms to be moved forward and backward along Y arms；4th motor drives Y arms left along X arms
Right motion.
Preferably, also including the pressure sensor being arranged at quantitative liquid storage pipe, control system also includes controller, amplifies
Device and A/D converter, amplifier are used to amplify the signal of pressure sensor offer；A/D converter provides pressure sensor
Signal is converted to data signal, is then supplied to controller.
Preferably, mechanical arm type solid-phase extracting instrument also includes liquid level sensor, its liquid for being used to detect the solution in container
Position, and the liquid level information that will be detected is supplied to controller.
Preferably, mechanical arm type solid-phase extracting instrument also include communication module, the communication module be used for controller with it is upper
Machine carries out communication link.
Preferably, the injection needle at least includes the external diameter that is sequentially connected different the first steel pipe and the second steel pipe, with
Connection forms step.
Compared with prior art, the mechanical arm type solid-phase extracting instrument that the utility model is provided is avoided that cross-infection.
Brief description of the drawings
Fig. 1 is the composition schematic diagram of the mechanical arm type solid-phase extracting instrument that the utility model first embodiment is provided；
Fig. 2 is the built-up circuit of the control system of the mechanical arm type solid-phase extracting instrument that the utility model first embodiment is provided
Figure；
Fig. 3 is the schematic diagram of the liquid-level tracking principle that the utility model first embodiment is provided；
Fig. 4 is the control process of the control system of the mechanical arm type solid-phase extracting instrument that the utility model first embodiment is provided
Flow chart；
Fig. 5 is the composition schematic diagram of the mechanical arm type solid-phase extracting instrument that the utility model second embodiment is provided；
Fig. 6 is the built-up circuit of the control system of the mechanical arm type solid-phase extracting instrument that the utility model second embodiment is provided
Figure.
Specific embodiment
The technical solution of the utility model is clearly and completely described below in conjunction with accompanying drawing, it is clear that described
Embodiment is a part of embodiment of the utility model, rather than whole embodiments.Based on the embodiment in the utility model, this
The every other embodiment that field those of ordinary skill is obtained under the premise of creative work is not made, belongs to this practicality
Novel protected scope.
, it is necessary to explanation, term " " center ", " on ", D score, " vertical ", " water in description of the present utility model
It is flat ", " interior ", the orientation of the instruction such as " outward " or position relationship be based on orientation shown in the drawings or position relationship, merely to just
Described with simplified in description the utility model, must be with specific side rather than the device or element for indicating or imply meaning
Position, with specific azimuth configuration and operation, therefore it is not intended that to limitation of the present utility model.
, it is necessary to explanation, unless otherwise clearly defined and limited, term " is pacified in description of the present utility model
Dress ", " setting ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected, or be detachably connected,
Or be integrally connected；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, can also be two element internals
Connection, for the ordinary skill in the art, can understand tool of the above-mentioned term in the utility model with concrete condition
Body implication.
First embodiment
Fig. 1 is the composition schematic diagram of the mechanical arm type solid-phase extracting instrument that the utility model first embodiment is provided, such as Fig. 1 institutes
Show, the utility model provide mechanical arm type solid-phase extracting instrument can from the liquid level in motion tracking container to be extracted, and from
When different liquid liquid are extracted in different containers and SPE posts are injected into, cross-infection can be avoided.Mechanical arm type solid-phase extracting instrument
Including three shaft mechanical arms, the three shaft mechanicals arm includes orthogonal X arms（X-axis）, Y arms（Y-axis）And Z arms（Z axis）（In figure
Do not show）, Z arms are the arm perpendicular to ground, and it can be movable along Y arms under motor M3 drivings；Y arms can be in motor M4
Moved left and right along X arms under driving.Vertical axial is provided with screw mandrel 9 on Z arms, sliding block 15, the cunning are provided with the screw mandrel
Block 15 is vertically moved under the driving of motor M2 along screw mandrel 15.Mechanical arm type solid-phase extracting instrument also includes liquid level sensor
12, in the utility model preferred capacitance sensor as liquid level sensor 12, the liquid levels that it is used to measure in container highly,
The preferred container of the utility model is test tube, in the utility model, in support（Do not show in figure）It is upper that in rectangular, N*M test tube is set
Or SPE posts, N and M is all higher than or equal to 2, test tube 16, test tube 17, test tube 18 and the SPE posts 19 for such as setting in X direction, each
Test tube is used to store different solution.Mechanical arm type solid-phase extracting instrument also includes injection needle 8, and it is set that it is used for the extraction from test tube
The solution of metering is simultaneously expelled in SPE posts, such as in SPE posts 19.Mechanical arm type solid-phase extracting instrument also includes syringe pump 1, the note
Pump 1 is penetrated to be connected with injection needle 8 by pipeline.Syringe pump 1 includes empty cylinder, piston and pull bar, and empty cylinder is preferably cylindrical drum, empty cylinder
First end connecting line, another end opening, piston is placed in empty cylinder, and piston is connected to pull bar, when pull bar band piston
When moving to empty cylinder bottom, the liquid in liquid storage pipe 3 is discharged from injection needle, when pull bar band piston moves to empty cylinder top
When, injection needle is pumped into solution from test tube in liquid storage pipe 3.The motion of pull bar is driven by motor M1.
In the utility model, a signal lead-out wire 13 of liquid level sensor 12 is connected to injection needle 8, liquid level sensor 12
Common port be connected to capacitor plate 14, the capacitor plate 14 is arranged under test tube, in this way, injection needle 8 and capacitor plate 14
An electric capacity is formed, when injection needle 8 is moved down, when liquid level is touched, its capacitance changes such that it is able to which measurement is held
Liquid level in device, it is generally the case that the diameter or lateral cross section of container are known, according to diameter or lateral cross section
With the volume that liquid level can calculate the solution in container, sectional area is multiplied with liquid level must liquor capacity.
Pressure sensor 4 is provided with quantitative liquid storage pipe 3 between injection needle and syringe pump, it is used to measure quantitative liquid storage
The pressure of liquid and pressure signal is converted into electric signal then sends control system in pipe 3.
The first solenoid directional control valve 2 is additionally provided with pipeline between injection needle 8 and syringe pump 1, wherein, the first electromagnetic switch
The first port of valve 2 is connected to syringe pump 1, and second port is connected to first fluid storage tank, the 3rd the first quantitative storage of port
Liquid pipe is communicated in the first port of the second solenoid directional control valve, and the first fluid is preferably liquid, more preferably water or alcohol.
First solenoid directional control valve 2 can connect first port and second port in the presence of the control signal S4 that control system is provided
Pass to suction water or alcohol.First solenoid directional control valve 2 can make in the presence of the control signal S2 that control system is provided
Single port and the 3rd port connect so that quantitative liquid storage pipe is connected through the second magnetic valve with injection needle.
The second solenoid directional control valve 5 is additionally provided with pipeline between injection needle 8 and syringe pump 1, wherein, the second electromagnetic switch
The first port of valve 5 is connected to the 3rd port of the first solenoid directional control valve 2 through the first quantitative liquid storage pipe, and second port is connected to the
Two fluid tanks, the 3rd the second quantitative liquid storage pipe 3 of port is communicated in injection needle 8, and second fluid is preferably gas, and the gas is excellent
Elect nitrogen or air as；Second solenoid directional control valve 5 can make first in the presence of the control signal S3 that control system is provided
Port connects with second port, with the nitrogen injection from nitrogen pot.The control letter that second solenoid directional control valve 5 is provided in control system
In the presence of number S3 first port can also connected with the 3rd port, be connected with injection needle 8 with by the second quantitative liquid storage pipe 3.
In the utility model, it is preferable that injection needle 8 is successively by being axially connected with the first overall diameter and the first internal diameter
The first steel pipe 81 and the second steel pipe 82 with second external diameter and the second internal diameter, first external diameter is bigger than second external diameter, so as to
Connection forms step, and second external diameter is slightly less than the first internal diameter, is easy to for the first end of the second steel pipe to be inserted into the first steel
Second end of pipe.Sealing ring 83 is provided with step.The first end of the first steel pipe is provided with the first reinforcing sleeve 84, first set
Pipe 84 is connected with attachment means 85, and attachment means 85 are used to for injection needle to be connected to sliding block 15.Second end of the second steel pipe 81
Inclined-plane is formed to form needle point, in the through hole of the sealing-plug for facilitating insertion into solid-phase extraction column.First steel pipe 82 utilizes high intensity
Steel is standby, and the second steel pipe is standby using the white steel of high tenacity, and makes the external diameter of the first steel pipe bigger than the external diameter of the first steel pipe, in this way,
Injection needle is set to have high intensity and high tenacity concurrently, so as to prevent injection needle from fractureing.
In the utility model, solid-phase extraction column（SPE）19 sealing-plugs for including bottle and the bottleneck for sealed bottle body, it is close
Blocking center is axially disposed through hole, and the bottle lower end is provided with liquid receiving mouth, and bottle mouth position is provided with bulge loop.When injection needle is pricked
When entering the through hole in sealing-plug, closure is propped up by when the step of injection needle, the sealing ring 83 on injection needle can just be stuck in close
In capping through hole, so that there is extruding and play a part of to be fully sealed in sealing ring 83.
Fig. 2 is the built-up circuit of the control system of the mechanical arm type solid-phase extracting instrument that the utility model first embodiment is provided
Figure, as shown in Fig. 2 the control system that the utility model is provided includes：Controller, amplifier, A/D converter 29, first are isolated
Device, the second isolator, for drive the first solenoid directional control valve 2 the first driver and for drive the second solenoid directional control valve 5
The second driver.
Liquid level sensor 12 is used to track the liquid level information in container, and liquid level information is converted into telecommunications
Breath, is then supplied to controller by phase inverter OP3.Pressure sensor 4 is used to measure the pressure of the liquid in quantitative liquid storage pipe 3
Power, and be power information by the pressure conversion of liquid, then it is supplied to proportional amplifier, proportional amplifier to be used for pressure sensor
The signal of offer is amplified.Exemplarily, proportional amplifier includes：Operational amplifier OP1, resistance R5, resistance R6 and resistance
R4, pressure sensor is connected to the end of oppisite phase of operational amplifier OP1 through resistance R5, and the output end of operational amplifier OP1 is through resistance
R6 is connected to its inverting input；The in-phase end of operational amplifier OP1 is connected to ground through resistance R4.Operational amplifier OP1's is defeated
Go out the input that end is connected to phase inverter OP2 through A/D converter 21, the output end of phase inverter OP2 is connected to one of controller
Input, A/D converter is used to for the analog signal that proportional amplifier is provided to be converted to data signal, and OP2 is used to change A/D
The signal that device 21 is provided carries out anti-phase, and is isolated.
First driver is used to provide drive signal to solenoid directional control valve 2.Exemplarily, the first driver includes transistor
TR1, resistance R1 and diode D1, wherein, the base stage TR1 of transistor TR1 is connected to controller through resistance R1, grounded emitter,
Colelctor electrode connects the positive pole of diode D1.The negative pole of diode D1 connects power supply, the two ends of diode D1 and the line bag phase of relay J1
It is in parallel.The first end of the power supply of the one termination AC220V of the normally opened contact K1 of relay J1, the one of another termination solenoid directional control valve 2
Individual terminal, another terminal of solenoid directional control valve 2 connects the second end of the power supply of AC220V.When needing solenoid directional control valve 2 to commutate,
Controller provides a high potential signal, transistor turns, the relay J1 being connected with its colelctor electrode to the base stage of transistor TR1
Line be surrounded by electric current and pass through, its normally opened contact closure, solenoid directional control valve 2 is connected AC220V power supplys and is commutated；When needing electricity again
When magnetic reversal valve 2 commutates, controller provides a low-potential signal, transistor cutoff, with its colelctor electrode to the base stage of transistor TR1
The line bag of connected relay J1 does not have electric current to pass through, and its normally opened contact K1 disconnects, and solenoid directional control valve 2 breaks with AC220V power supplys
Open.
Second driver is used to provide drive signal to the second solenoid directional control valve 5.Exemplarily, the second driver includes crystalline substance
The base stage TR2 of body pipe TR2, resistance R2 and diode D2, wherein transistor is connected to controller through resistance R2, grounded emitter,
Colelctor electrode connects the positive pole of diode D2.The negative pole of diode D2 connects power supply, the two ends of diode D2 and the line bag phase of relay J2
It is in parallel.The first end of the power supply of one termination AC220V of the normally opened contact of relay J2, one of another termination solenoid directional control valve 5
Terminal, the second end of the power supply of another terminal connection AC220V of solenoid directional control valve 5.When needing solenoid directional control valve 5 to commutate,
Controller provides a high potential signal to the base stage of transistor TR2, the relay J2's that transistor TR2 is connected with its colelctor electrode
Line is surrounded by electric current and passes through, and its normally opened contact closure, solenoid directional control valve 5 is connected AC220V power supplys and commutated；When needing electromagnetism again
When reversal valve 5 commutates, controller provides a low-potential signal, transistor TR2 cut-offs, with its current collection to the base stage of transistor TR2
The line bag of extremely connected relay J2 does not have electric current to pass through, and its normally opened contact disconnects, and solenoid directional control valve 5 breaks with AC220V power supplys
Open.
The mechanical arm type solid-phase extracting instrument that the utility model is provided also includes sound light alarming circuit, exemplarily, acousto-optic report
Alert circuit includes transistor TR4, resistance R7, resistance R8, loudspeaker 30 and lamp LED, wherein, the base stage of transistor TR4 is through resistance
R7 is connected to controller, grounded emitter, and colelctor electrode connects the negative pole of lamp LED.The positive pole of lamp LED connects power supply through resistance R8.Work as pipe
When pressure in road exceedes setting value, controller provides a high potential signal to the base stage of transistor TR4, and transistor TR4 leads
Logical, LED lights, the sounding of loudspeaker 30.
The mechanical arm type solid-phase extracting instrument that the utility model first embodiment is provided also includes CAN, and controller passes through
EBI 35 is connected in CAN.
The control system that the utility model first embodiment is provided also includes the stepper motor for Driving Stepping Motor M1
Driver 21, it passes through CAN interface 20 and is connected with CAN.Controller is carried through CAN to stepper motor driver 21
For control signal, the motor M1 of stepper motor driver 21 is rotated forward or inverted, so that injection pump work.More specifically,
Motor M1 drives the pull bar of syringe pump to be moved up and down in its empty cylinder to be further driven to piston, is pumped into when moving down and is situated between
Matter, discharges medium when moving up, the medium is water, alcohol, nitrogen or air.
Control system also includes the stepper motor driver 23 for Driving Stepping Motor M2, and it passes through CAN interface
22 are connected with CAN.Controller provides control signal, stepper motor driver through CAN to stepper motor driver 23
23 motor M2 are rotated forward or inverted, so that sliding block 15 is moved up and down under the driving of motor M2 along screw mandrel, the band of sliding block 15
Dynamic injection needle 8 is moved up and down.As shown in figure 3, in the utility model, the length of screw mandrel is fixed value, and container is set in rectangular
Put in support（Do not show in figure）On, screw mandrel is fixed with the position of support, in other words, along short transverse, the start bit of sliding block 15
A is put to be fixed with the position of the bottom C of container, when sliding block 15 drives injection needle 8 to be moved down along screw mandrel, the pulse of motor M2
Number also linearly increased increasing with the distance that moves down, and a pulsed drive motor with movable slider 15 moving down
Step-length be, it is known that when injection needle 8 touches liquid level, i.e. during injection needle B` dynamic by B movements, by injection needle, capacitor plate and its
Between the value of electric capacity that is formed of medium change, capacitance sensor detects the change and is converted into the change of this electric capacity
Voltage signal then provides ratio to amplifier, and the signal after amplification is supplied to A/D converter 29, A/D to turn by proportional amplifier
The analog signal that parallel operation 29 will be received is converted to data signal, is supplied to controller, controller to detect the letter through isolator
After number, application program in memory is called, the distance that injection needle is moved down, sliding block start bit can be calculated according to umber of pulse and step-length
Put to subtract and move down apart from height of liquid level inside container is just obtained, the liquid level in container is calculated with the product of the cross section of container
The volume of the solution in container, it can be seen that, the liquid level tracks of device that the utility model is provided can track the liquid in container
Liquid level.
Control system also includes the stepper motor driver 25 for Driving Stepping Motor M3, and it passes through CAN interface
24 are connected with CAN.Controller provides control signal, stepper motor driver through CAN to stepper motor driver 25
25 motor M3 are rotated forward or inverted, so that Z arms are movable along Y arms, further, before and after Z arms is carried injection needle
Move to the container top of respective column.
Control system also includes the stepper motor driver 27 for Driving Stepping Motor M4, and it passes through CAN interface
26 are connected with CAN.Controller provides control signal, stepper motor driver through CAN to stepper motor driver 27
27 motor M4 are rotated forward or inverted, so that Y arms can be moved left and right under motor M4 drivings along X arms, further, are made
Y arms carry Z arms, and Z arms carry the container top that injection needle 8 moves left and right institute's corresponding line.
The mechanical arm type solid-phase extracting instrument that the utility model first embodiment is provided is additionally included in voltage-stabilized power supply, voltage-stabilized power supply
Switch KH2 and KL2 is set for providing electric energy to each part, between voltage-stabilized power supply and AC220V power supplys, is to work as control signal
When not working, positive closing power supply.
The mechanical arm type solid-phase extracting instrument that the utility model first embodiment is provided also includes memory 11, and it at least includes
ROM and RAM, ROM be used for storage should program and data, RAM is used to store nonce.Memory 11 passes through CAM EBIs
34 are connected in CAN.The mechanical arm type solid-phase extracting instrument that the utility model is provided also includes first communication module 10, and it is
Wireless communication module, such as WIFI module, bluetooth module, it is used for controller carries out Radio Link, the first communication with host computer
Module 10 is connected in CAN by CAM EBIs 33.The mechanical arm type solid-phase extracting instrument that the utility model is provided also is wrapped
Second communication module 32 is included, it is preferably network interface card, for carrying out wire link with host computer, second communication module 31 passes through CAM
EBI 32 is connected in CAN.Such host computer can be sent out by first and/or second communication module to controller
Instruction is sent, and data are connect from controller.Be packaged into for the data that liquid level sensor 12 and pressure sensor are transmitted by controller
Frame is simultaneously sent to host computer, the calculating that host computer is also carried out mutually going according to these data by communication module.
Fig. 4 is the control process of the control system of the mechanical arm type solid-phase extracting instrument that the utility model first embodiment is provided
Flow chart, as shown in figure 4, the control process of the control system of mechanical arm type solid-phase extracting instrument includes：
The control system of mechanical arm type solid-phase extracting instrument is initialized, and the data of host computer is received by communication module,
Drive signal is provided to the third and fourth motor, three shaft mechanical arms is moved to the test tube position specified；Control system gives second
Motor provides drive signal declines Z arms top shoe 15, when the injection needle 8 that sliding block is carried in the middle of motion encounters liquid level, liquid level
Sensor sends a level signal to controller.
Controller receives this signal, provides drive signal to drive syringe pump 1 to extract liquid to the first motor, and adjust
The speed that injection needle declines on whole Z axis, is allowed to be consistent with liquid level decrease speed, realizes that liquid level is followed.
When syringe pump is drawn into the solution of the set amount of experiment, can give controller one completion signal, then control slide block
Upper shifting, sliding block drives injection needle pull-up and control machinery arm moves to specified SPE posts position, then controls Z arm top shoes to move down, with
Injection needle is set to decline the aperture at insertion SPE post plungers center, when the sealing ring at injection needle step withstands the aperture on lid,
The liquid that syringe pump injection has just been drawn from test tube.
Syringe pump also connects pure water or alcohol by the first solenoid directional control valve 2, because the liquid of suction does not enter syringe pump
（If entering membership causes cross pollution）, liquid only can reach the first solenoid directional control valve before in liquid storage pipe 3（Syringe pump is once inhaled
Enter amount for 10ML, had between injection needle and three tunnel switching valves>The liquid storage pipe of 10ml deposits the liquid of suction）If inhaling
The liquid for entering does not enter syringe pump, then syringe pump shell in suction can shorten syringe pump because of the reciprocating motion without medium
Life-span, therefore syringe pump can by the first solenoid directional control valve 2 access pure water or alcohol, help aspirate, play the work of lubrication
With.
Due to there is large particulate matter in the liquid that some are tested, to the injection of SPE posts, flow rate of liquid is too fast may cause SPE
Post is blocked, so adding pressure sensor 4 in the duct, when pressure exceedes setting value, instrument is returned by pressure sensor 4
Signal is alarmed, and reaches safe handling device（Or instrument）Purpose.
Second embodiment
The composition schematic diagram of the mechanical arm type solid-phase extracting instrument that Fig. 5 the utility model second embodiment is provided, such as Fig. 5 shows,
The utility model second embodiment provide mechanical arm type solid-phase extracting instrument it is different from first embodiment be only second
The 3rd solenoid directional control valve is provided between magnetic valve and liquid storage pipe 3, other compositions are identical, only description second embodiment is real with first
The different part of example is applied, identical part is no longer repeated.
The 3rd solenoid directional control valve 5 is additionally provided with pipeline between injection needle 8 and syringe pump 1, wherein, the first electromagnetic switch
The first port of valve 2 is connected to syringe pump, and second port is connected to water pot or alcohol container, and the 3rd port is connected to by the road
The first port of two solenoid directional control valves.First solenoid directional control valve 2, can be with the presence of the control signal S2 that control system is provided
First port is connected with second port, with from water pot or alcohol container extract water or alcohol, when need to pipeline, injection needle,
When reversal valve is cleaned, syringe pump 1 extracts water or alcohol from water pot or alcohol container.First solenoid directional control valve 2 is in control system
Unite provide control signal S2 in the presence of first port can also connected with the 3rd port, with extract from container solution or
Note is put into SPE posts.The first port of the second solenoid directional control valve 5 is connected to the 3rd port of the first solenoid directional control valve 2 by the road,
Second port is connected to nitrogen pot, and the 3rd port is communicated in the first port of the second solenoid directional control valve；Second solenoid directional control valve 5 exists
In the presence of the control signal S3 that control system is provided, first port can be made to be connected with second port, be noted with from nitrogen pot
Enter nitrogen.Second solenoid directional control valve 5 can also make first port and the 3rd in the presence of the control signal S3 that control system is provided
Port connects, so that pipeline is connected with injection needle.The first port of the 3rd solenoid directional control valve 6 is connected to the second electromagnetism and changes by the road
To the 3rd port of valve 5, second port is connected to the external world, and the 3rd port is even connected to injection needle through liquid storage pipe 3；3rd electromagnetism is changed
To valve 6 in the presence of the control signal S4 that control system is provided, first port can be made to be connected with second port, with from the external world
Middle injection air.3rd solenoid directional control valve 6 can also make in the presence of the control signal S4 that control system is provided first port and
3rd port connects, so that pipeline is connected with injection needle.
Fig. 6 is the built-up circuit of the control system of the mechanical arm type solid-phase extracting instrument that the utility model second embodiment is provided
Figure, as shown in fig. 6, the control system of the mechanical arm type solid-phase extracting instrument of the utility model second embodiment offer is implemented with second
Example is different to be only：Control system further comprises the 3rd driver for driving the 3rd solenoid directional control valve 6 of driving, other
Composition is identical, only the description second embodiment part different from first embodiment, and identical part is no longer repeated.
3rd driver includes transistor TR3, resistance R3 and diode D3, and wherein the base stage TR3 of transistor is through resistance R2
Controller, grounded emitter are connected to, colelctor electrode connects the positive pole of diode D3.The negative pole of diode D3 connects power supply, diode D3
Two ends be in parallel with the line bag of relay J3.The first of the power supply of the one termination AC220V of the normally opened contact K3 of relay J3
End, a terminal of another termination solenoid directional control valve 6, the of the power supply of another terminal connection AC220V of solenoid directional control valve 6
Two ends.When needing solenoid directional control valve 6 to commutate, controller provides a high potential signal, transistor to the base stage of transistor TR3
The line of the relay J2 that TR3 is connected with its colelctor electrode is surrounded by electric current and passes through, and its normally opened contact K3 closures, solenoid directional control valve 3 is connected
AC220V power supplys and commutate；When not needing solenoid directional control valve 6 to commutate, controller provides a low electricity to the base stage of transistor TR3
Position signal, transistor TR3 cut-offs, the line bag of the relay J3 being connected with its colelctor electrode does not have electric current to pass through, its normally opened contact K3
Disconnect, solenoid directional control valve 6 disconnects with AC220V power supplys.
The control process of the control system of the mechanical arm type solid-phase extracting instrument that the utility model second embodiment is provided and the
One embodiment is similar to, and no longer repeats here.
In the utility model, due to by making to be implanted sequentially liquid, gas in the liquid storage pipe between syringe pump and injection needle
And solution, liquid and solution are separated using gas, solution is not entered syringe pump and is only temporarily stored in liquid storage pipe, and store up
Liquid pipe is easy to be cleaned using liquid or gas, therefore avoids cross-infection.
Above in association with accompanying drawing, operation principle of the present utility model is described in detail.But one of ordinary skill in the art
It should be understood that specification is only for explaining claims.But protection domain of the present utility model is not limited to specification.
Any one skilled in the art in the technical scope that the utility model is disclosed, the change that can readily occur in or
Replace, should all cover within protection domain of the present utility model.Therefore, protection domain of the present utility model should be wanted with right
The protection domain of book is asked to be defined.
Claims (10)
1. a kind of mechanical arm type solid-phase extracting instrument, including syringe pump and injection needle, the syringe pump are driven using the first motor, its
It is characterised by, quantitative liquid storage pipe is provided between syringe pump and injection needle.
2. mechanical arm type solid-phase extracting instrument according to claim 1, it is characterised in that also including the first reversal valve, its tool
There are first port, second port and the 3rd port, wherein, first port is connected to syringe pump, and second port is connected to fluid reservoir,
3rd port is connected to injection needle.
3. mechanical arm type solid-phase extracting instrument according to claim 2, it is characterised in that also including the second reversal valve, its tool
There are first port, second port and the 3rd port, wherein, first port is connected to the 3rd port of the first reversal valve, the second end
Mouth is connected to air accumulator, and the 3rd port is connected to injection needle.
4. mechanical arm type solid-phase extracting instrument according to claim 3, it is characterised in that also including the 3rd reversal valve, its tool
There are first port, second port and the 3rd port, wherein, first port is connected to the 3rd port of the second reversal valve, the second end
Mouth is connected to the external world, and the 3rd port is connected to injection needle.
5. according to any described mechanical arm type solid-phase extracting instruments of claim 1-4, it is characterised in that also including control system,
The control system is used to control the driving of the first motor, first to change the work shape of valve, the second reversal valve and/or the 3rd reversal valve
State.
6. mechanical arm type solid-phase extracting instrument according to claim 5, it is characterised in that also including three shaft mechanical arms, second
Motor, the 3rd motor and the 4th motor, the three shaft mechanicals arm include X arms, Y arms and Z arms, screw mandrel are provided with Z arms, on screw mandrel
Sliding block is provided with, second motor drives sliding block to be moved up and down along screw mandrel；3rd motor drives Z arms to be moved forward and backward along Y arms；The
Four motors drive Y arms along X arm side-to-side movements.
7. mechanical arm type solid-phase extracting instrument according to claim 6, it is characterised in that also including being arranged on quantitative liquid storage pipe
The pressure sensor at place, control system also includes controller, amplifier and A/D converter, and amplifier is used to amplify pressure sensing
The signal that device is provided；The signal that pressure sensor is provided is converted to data signal by A/D converter, is then supplied to controller.
8. mechanical arm type solid-phase extracting instrument according to claim 7, it is characterised in that also including liquid level sensor, its use
In the liquid level of the solution in detection container, and the liquid level information that will be detected is supplied to controller.
9. mechanical arm type solid-phase extracting instrument according to claim 8, it is characterised in that also including communication module is described logical
Letter module is used for controller carries out communication link with host computer.
10. mechanical arm type solid-phase extracting instrument according to claim 9, it is characterised in that the injection needle at least include according to
Secondary connected external diameter different the first steel pipe and the second steel pipe, step is formed with connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621055759.0U CN206184043U (en) | 2016-09-14 | 2016-09-14 | Arm -type solid -phase extraction appearance of machinery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621055759.0U CN206184043U (en) | 2016-09-14 | 2016-09-14 | Arm -type solid -phase extraction appearance of machinery |
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| Publication Number | Publication Date |
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| CN206184043U true CN206184043U (en) | 2017-05-24 |
Family
ID=58728370
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621055759.0U Expired - Fee Related CN206184043U (en) | 2016-09-14 | 2016-09-14 | Arm -type solid -phase extraction appearance of machinery |
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| Country | Link |
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| CN (1) | CN206184043U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106422412A (en) * | 2016-09-14 | 2017-02-22 | 济南海能仪器股份有限公司 | Mechanical arm type solid phase extraction instrument |
| CN106984063A (en) * | 2017-05-26 | 2017-07-28 | 宝鸡文理学院 | A kind of Staticadsorption experiment equipment |
| CN111889060A (en) * | 2020-04-20 | 2020-11-06 | 璧典赴 | Food detects uses quick testing platform equipment |
-
2016
- 2016-09-14 CN CN201621055759.0U patent/CN206184043U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106422412A (en) * | 2016-09-14 | 2017-02-22 | 济南海能仪器股份有限公司 | Mechanical arm type solid phase extraction instrument |
| CN106422412B (en) * | 2016-09-14 | 2018-10-02 | 济南海能仪器股份有限公司 | A kind of mechanical arm type solid-phase extracting instrument |
| CN106984063A (en) * | 2017-05-26 | 2017-07-28 | 宝鸡文理学院 | A kind of Staticadsorption experiment equipment |
| CN106984063B (en) * | 2017-05-26 | 2020-10-30 | 宝鸡文理学院 | Static adsorption experimental equipment |
| CN111889060A (en) * | 2020-04-20 | 2020-11-06 | 璧典赴 | Food detects uses quick testing platform equipment |
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Granted publication date: 20170524 Termination date: 20190914 |