CN207742210U - A kind of sampler and the sampling device using the device, detecting system - Google Patents
A kind of sampler and the sampling device using the device, detecting system Download PDFInfo
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- CN207742210U CN207742210U CN201720963810.6U CN201720963810U CN207742210U CN 207742210 U CN207742210 U CN 207742210U CN 201720963810 U CN201720963810 U CN 201720963810U CN 207742210 U CN207742210 U CN 207742210U
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Abstract
This application discloses a kind of samplers, including depression generator, pressure-detecting device, sampling probe, main line, control system, the depression generator is connected with the sampling probe by main line, and the depression generator generates negative pressure for making inside sampler；The pressure-detecting device is arranged on the main line, for detecting pressure；The control system is connected with the depression generator, pressure-detecting device respectively, and the control system receives the data of the pressure-detecting device, and controls the operating of the depression generator.The application also provides the sampling device using above-mentioned sampler, detecting system.The liquid drawn of accurate quantitative analysis when sampling may be implemented in the sampler of the application, and ensures the sampling probe of sampler under the premise of can be drawn to enough solution sample, and contact liquor sample as few as possible is convenient for the cleaning of sampling probe.
Description
Technical field
This application involves detection device technical fields, are filled more particularly to a kind of sampler and using the sample introduction of the device
It sets, detecting system.
Background technology
Sampler is by the way that probe is extend into liquor sample storage device, after draw solution sample, is shifted
Into another container, or it is put into detection device and detects.The liquor sample for needing absorption specified amount every time, in order to subsequent detection
And the progress of interpretation of result.Existing sampler generally use flowmeter, optical detection apparatus etc. realize the solution to absorption
Quantifying for sample, it is complicated.
After the sampling probe of sampler stretches into solution, meeting attachment portion liquor sample on pinhead wall is sampled, it is next drawing
It before a sample, pollutes in order to prevent, needs to clean sample needle, the operating time is long, and working efficiency is relatively low.
Utility model content
In order to solve the above technical problems, first purpose of the utility model is to provide a kind of sampler, this practicality is new
Second purpose of type is to provide a kind of sampling device using above-mentioned sampler, and the third purpose of the utility model is to carry
For a kind of detecting system using above-mentioned sampler.Accurate quantitative analysis when sampling may be implemented in the sampler of the utility model
The liquid drawn, and ensure the sampling probe of sampler under the premise of can be drawn to enough solution sample, it is as few as possible
Contact liquor sample, be convenient for sampling probe cleaning.
The technical scheme that the utility model is provided is as follows：
A kind of sampler, including depression generator, pressure-detecting device, sampling probe, main line, control system, institute
It states depression generator with the sampling probe to be connected by main line, the depression generator is for making inside sampler
Generate negative pressure；The pressure-detecting device is arranged on the main line, for detecting pressure；The control system respectively with institute
It is connected to state depression generator, pressure-detecting device, the control system receives the data of the pressure-detecting device, and controls
The operating of the depression generator.
Preferably, it is additionally provided with triple valve on the main line, the triple valve includes public port, normally opened port, normally closed
Port, the public port are arranged in the main line close to one end of the depression generator, the normally opened port setting
In the main line close to one end of the sampling probe, the normally closed port is connected to outside air, the control system and institute
It states triple valve to be connected, controls the opening and closing of triple valve.
Preferably, the main line be equipped with threeway, the threeway be respectively communicated with the sampling probe, depression generator,
Outside air；The main line is equipped with two-way valve with outside air connectivity part, and the control system is connected with the two-way valve, controls
The opening and closing of two-way valve processed.
Preferably, air pump, bypass line are additionally provided with, the air pump is normally closed by bypass line and the triple valve
Port or the two-way valve are connected, and the control system is connected with the air pump, control the operating of air pump.
Preferably, the cavity volume of the sampling probe is greater than or equal to the volume of samples taken.
Preferably, the sampling probe is by ruthenium, rhodium, palladium, silver, osmium, iridium, platinum, gold, titanium metal material, or containing ruthenium, rhodium, palladium,
It is prepared by the alloy material of any one or more in silver, osmium, iridium, platinum, gold, titanium.
Preferably, the sampling probe is equipped with plating fluorine layer.
Preferably, the depression generator is any one in plunger pump, piston pump, diaphragm pump, peristaltic pump, vacuum pump
Kind.
A kind of sampling device, including the mechanical arm that can be moved in certain space, the sampler being connected with mechanical arm, institute
It is above-mentioned sampler to state sampler.
A kind of detecting system, including above-mentioned sampler, with the analytical instrument tested sample.
The sampler of the utility model, depression generator are connected with sampling probe by main line, pressure detecting dress
It installs on main line, the pressure value in main line is detected.Control system is examined with depression generator, pressure respectively
It surveys device to be connected, control system receives the data of pressure-detecting device detection, and controls the operating of depression generator.
When being sampled using the sampler of the utility model, control sampling probe stretches into sample liquid level hereinafter, negative pressure fills
It sets operating and generates negative pressure, the pressure in depression generator, sampling probe, main line composition system is less than extraneous pressure at this time,
Then sample is pressed under extraneous pressure effect in sampling probe.Pressure-detecting device persistently detects in main line in the process
Pressure value, pressure-detecting device detection pressure value, it is related to the vertical height of the liquid absorbed in sampling probe, then can lead to
The liquid level that the pressure value that over-pressed force checking device detects calculates in sampling probe can in conjunction with parameters such as the internal diameters of sampling probe
To calculate the volume of the liquid absorbed in sampling probe.When using micro-pressure sensor such as pressure-detecting device, when the sampling used
When the cavity volume of needle is greater than or equal to the volume of samples taken, the vertical height for the liquid that sampling probe is drawn is sensed with minute-pressure
The voltage value (negative pressure value) of device is directly proportional.When the liquid for needing accurate measurement bigger than sampling probe cavity volume, it is necessary to calibration pressure
Correspondence between force snesor pressure and taken liquid.
A kind of detection project, it is typically certain to detect required sample volume each time, then can pass through setting pressure limit
The parameters such as value realize the quantitative absorption to sample.According to parameters such as the internal diameters of the volume of required sample and sampling probe, pass through meter
It calculates, the methods of actual test, determines the relationship between sample volume and the pressure value of pressure-detecting device detection, and by a certain inspection
Sample volume corresponding pressure value needed for survey project is set as limit value.When then the sampler being used to sample, sampling probe stretches into
Under sample liquid level, control system controls depression generator operating and generates negative pressure, and sample is inhaled into sampling probe, during this
Pressure-detecting device persistently detects the variation of the pressure value in main line, and detection data is fed back to control system.When pressure is examined
When the pressure value of survey device detection reaches the limit value set in control system, control system controls depression generator and stops fortune
Turn, the sample volume drawn in sampling probe at this time is a certain amount of volume corresponding to the pressure limit, realizes quantitative draw
The function of liquid.
The sampler of the utility model can be arranged different according to the difference of sample volume needed for different detection projects
Limit value, by control system control draw different volumes sample.Meanwhile according to the difference of the parameters such as the internal diameter of sampling probe, making
When with the sampling probe of different model, the pressure value corresponding to the sample of a certain amount of volume is also different, can be in control system to not
Different limit values is set with model sampling probe, achievees the purpose that being adapted to different model sampling probe is sampled.Then the utility model
Sampler, set pressure limit can be changed according to the model of sampling probe, the amount of the sample volume of required absorption, or
It is respectively set that multiple pressure limits are corresponding, to realize the effect for being adapted to different sampling probes, adapting to different sample volume demands
Fruit.
Using the sampler of the utility model, it can also realize that stretching into liquid level depth below to sampling probe controls
System.The position of sampling probe and liquid level should ensure that sampling probe can get sample, in order to avoid suction；Ensure sampling probe and liquid level again
Contact area is few as possible, in order to avoid the liquid of sampling probe surfaces externally and internally attachment causes cross contamination, or brings error.Use this practicality
When novel sampler sampling, it is that sampling probe stretches into liquid level hereinafter, control depression generator is inoperative at this time first, then leads
Pressure value variation in pipeline, stretches into that liquid level depth below is related to sampling probe, then can pass through pressure-detecting device detection
Pressure value calculates sampling probe and stretches into liquid level depth below.When using micro-pressure sensor such as pressure-detecting device, sampling probe stretches into
The voltage value of liquid level depth below and micro-pressure sensor is inversely proportional.
Sampling probe stretches into liquid process below, the pressure value of control system real-time collecting pressure-detecting device detection, and
Compared with the limit value of setting, when the pressure value of detection is above or below setup pressure value, the depth of sampling probe has been represented
Reach setting value, control system control sampling probe stops continuing to move under liquid level.
If sampling probe has moved to mechanical arm maximum position, the collected pressure value of pressure-detecting device still cannot
Reach setup pressure value, then control system judgement is sampled deficiency.Or sampling probe is deep into after being sampled fixed position, is born
It presses in extraction process, the pressure value of pressure-detecting device can not reach setting value, then control system can also judge to be taken
Sample is insufficient or pipeline gas leakage.
When sampling probe stretches into liquid level depth below, reaches and draw the requirement of a certain amount of volume sample (i.e. sampling probe stretches into
Liquid level depth below reaches the minimum-depth for drawing a certain amount of sample) when, control sampling probe does not continue to be inserted into, it is ensured that
The contact liq of sampling probe minimum-depth is convenient for the cleaning of sampling probe.
Sampling probe is stretched into liquid level depth below and reaches pressure value corresponding to the minimum-depth for drawing a certain amount of sample
It is set as limit value, then when using the sampler to sample, during sampling probe stretches under sample liquid level, pressure-detecting device is held
Pressure value variation in continuous detection main line, and detection data is fed back into control system.When the pressure of pressure-detecting device detection
When force value reaches the limit value set in control system, it is to draw a certain amount of sample institute that sampling probe, which stretches into liquid level depth below, at this time
The minimum-depth needed, control system control stop stretching into for sampling probe, and sampling probe stops being inserted into, to ensure sampling probe minimum
The contact liq of degree is convenient for the cleaning of sampling probe.
Since sampling probe stretches into, liquid level depth below is related with pressure value, then the volume of the sample itself in container is to taking
The sampling process of sample needle not will produce interference.When the sample in container is more or relatively expires, sampling probe stretches into the depth of vessel port
It is shallower；And when the sample in container is less, the depth that sampling probe stretches into vessel port is deeper, but no matter sample in container it is more or
Few, when drawing the sample of certain volume, the depth that sampling probe stretches into sample liquid level is identical.By using the utility model
Sampler stretches into liquid level depth below to sampling probe and controls, can be taken to avoid what sample in container occurred when more
Sample needle is fully inserted into, even main line stretches into the problems such as cleaning brought in sample is difficult；Meanwhile when in container sample it is less
When, asking for testing requirements is not achieved in the sample volume that also avoidable sampling probe stretches into the absorption that liquid level depth below is not enough brought
Topic.
Using the utility model sampler when, common operation is, keeps depression generator to be in first and closes
Sampling probe is extend into sample liquid level hereinafter, detecting pressure value by pressure-detecting device at this time and feeding back to control system by state
System, control system stretch into sample liquid level depth below to sampling probe and control.After sampling probe reaches set depth, stop
Sampling probe stretches into, and opens depression generator and generate negative pressure, and pipette samples liquid enters sampling probe, and pressure detecting fills at this time
The pressure value for setting detection feeds back to control system, the volume for controlling drawn sample.When reaching the volume of setting, control
System control depression generator processed shuts down, and the volume that sampling probe is drawn at this time is the sample needed for a certain detection project
The determined volume of product.
The sampler of the utility model can coordinate the mechanical arm that can be moved in certain space to use, and realize automatic
Sampling, automatic sampling.Using the sampling device with mechanical arm, the detecting system of cooperation analytical instrument composition may be implemented point
Analyse the automation of detection process.
The sampler of the utility model can also coordinate other sampling devices, analysis and detection device to use, play quantitative suction
The effect of liquid is taken, and the contact sample of sampling probe minimum degree can be controlled, is convenient for the cleaning of sampling probe.
Description of the drawings
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments described in application, for those of ordinary skill in the art, without creative efforts,
Other drawings may also be obtained based on these drawings.
Fig. 1 is the connection diagram (triple valve scheme) of sampler in the utility model embodiment；
Fig. 2 is the connection diagram (threeway and two-way valve scheme) of sampler in the utility model embodiment；
Fig. 3 is the structural schematic diagram (being connect with mechanical arm) of sampler in the utility model embodiment；
Fig. 4 is the control unit connection diagram of sampler in the utility model embodiment；
Reference numeral：1- depression generators；2- pressure-detecting devices；3- sampling probes；4- main lines；5- control systems；
6- triple valves；601- public ports；The normally opened ports 602-；The normally closed ports 603-；7- air pumps；8- bypass lines；9- two-way valves；
Specific implementation mode
In order to make those skilled in the art better understand the technical solutions in the application, below in conjunction with the application reality
The attached drawing in example is applied, technical solutions in the embodiments of the present application is clearly and completely described, it is clear that described implementation
Example is merely a part but not all of the embodiments of the present application.Based on the embodiment in the application, this field is common
The every other embodiment that technical staff is obtained without making creative work should all belong to the application protection
Range.
Please be as shown in Figures 1 to 4, a kind of sampler of the utility model embodiment offer, including depression generator 1,
Pressure-detecting device 2, sampling probe 3, main line 4, control system 5, the depression generator 1 pass through master with the sampling probe 3
Pipeline 4 is connected, and the depression generator 1 generates negative pressure for making inside sampler；The pressure-detecting device 2 is arranged
On the main line 4, for detecting pressure；The control system 5 is filled with the depression generator 1, pressure detecting respectively
It sets 2 to be connected, the control system 5 receives the data of the pressure-detecting device 2, and controls the fortune of the depression generator 1
Turn.
The sampler of the utility model, depression generator 1 are connected with sampling probe 3 by main line 4, pressure detecting
Device 2 is arranged on main line 4, is detected to the pressure value in main line 4.Control system 5 respectively with depression generator
1, pressure-detecting device 2 is connected, and control system 5 receives the data that pressure-detecting device 2 detects, and controls depression generator 1
Operating.
When being sampled using the sampler of the utility model, control sampling probe 3 stretches into sample liquid level hereinafter, negative pressure fills
It sets 1 operating and generates negative pressure, the pressure in depression generator 1, sampling probe 3,4 composition system of main line is less than extraneous pressure at this time
Power, then sample be pressed into sampling probe 3 under extraneous pressure effect.Pressure-detecting device 2 in the process lead by lasting detection
Pressure value in pipeline 4, the pressure value that pressure-detecting device 2 detects, the vertical height phase with the liquid absorbed in sampling probe 3
It closes, then the liquid level in sampling probe 3 can be calculated by the pressure value that pressure-detecting device 2 detects, in conjunction with sampling probe 3
The parameters such as internal diameter can calculate the volume of the liquid absorbed in sampling probe 3.As pressure-detecting device 2 uses micro-pressure sensor
When, when the cavity volume of the sampling probe 3 used is greater than or equal to the volume of samples taken, liquid that sampling probe 3 is drawn
Vertical height is directly proportional to voltage value (negative pressure value) of micro-pressure sensor.It is bigger than 3 cavity volume of sampling probe when needing precisely to measure
Liquid, it is necessary to the correspondence between nominal pressure cell pressure and taken liquid.
A kind of detection project, it is typically certain to detect required sample volume each time, then can pass through setting pressure limit
The parameters such as value realize the quantitative absorption to sample.According to parameters such as the internal diameters of the volume of required sample and sampling probe 3, pass through meter
The methods of calculation, actual test determine the relationship between the pressure value that sample volume and pressure-detecting device 2 detect, and will be a certain
Sample volume corresponding pressure value needed for detection project is set as limit value.When then the sampler being used to sample, sampling probe 3 is stretched
Entering under sample liquid level, control system 5 controls the operating of depression generator 1 and generates negative pressure, and sample is inhaled into sampling probe 3, this
Pressure-detecting device 2 persistently detects the variation of the pressure value in main line 4 in the process, and detection data is fed back to control system 5.
When the pressure value that pressure-detecting device 2 detects reaches the limit value set in control system 5, control system 5 controls negative pressure
Device 1 shuts down, and the sample volume drawn in sampling probe 3 at this time is a certain amount of volume corresponding to the pressure limit,
Realize the function of quantitatively drawing liquid.
The sampler of the utility model can be arranged different according to the difference of sample volume needed for different detection projects
Limit value, by control system 5 control draw different volumes sample.Meanwhile according to the difference of the parameters such as the internal diameter of sampling probe 3,
Using different model sampling probe 3 when, the pressure value corresponding to the sample of a certain amount of volume is also different, can be in control system 5
Different limit values is set to different model sampling probe 3, achievees the purpose that being adapted to different model sampling probe 3 is sampled.Then this reality
With novel sampler, set pressure can be changed according to the amount of the model of sampling probe 3, the sample volume of required absorption
Limit value, or to be respectively set multiple pressure limits corresponding, is needed to realize the different sampling probes of adaptation, adapt to different sample volumes
The effect asked.
Using the sampler of the utility model, it can also realize that stretching into liquid level depth below to sampling probe 3 controls
System.Sampling probe 3 and the position of liquid level should ensure that sampling probe 3 can get sample, in order to avoid suction；Ensure sampling probe 3 and liquid again
The contact area in face is few as possible, in order to avoid the liquid of 3 surfaces externally and internally of sampling probe attachment causes cross contamination, or brings error.It uses
It is that sampling probe 3 stretches into liquid level hereinafter, controlling depression generator 1 not at this time first when the sampler sampling of the utility model
Operating, then the pressure value variation in main line 4, it is related to stretch into liquid level depth below to sampling probe 3, then can be examined by pressure
The pressure value that device 2 detects is surveyed, sampling probe 3 is calculated and stretches into liquid level depth below.As pressure-detecting device 2 is passed using minute-pressure
When sensor, sampling probe 3 stretches into liquid level depth below and the voltage value of micro-pressure sensor is inversely proportional.
Sampling probe 3 stretches into liquid process below, the pressure value of 5 real-time collecting pressure-detecting device 2 of control system detection,
And compared with the limit value of setting, when the pressure value of detection is above or below setup pressure value, the depth of sampling probe 3 has been represented
Through reaching setting value, control system 5 controls sampling probe 3 and stops continuing to move under liquid level.
If sampling probe 3 has moved to mechanical arm maximum position, 2 collected pressure value of pressure-detecting device is still not
Setup pressure value can be reached, then the judgement of control system 5 is sampled deficiency.Or sampling probe 3 is deep into and is sampled fixed position
Afterwards, during negative pressure extracting, the pressure value of pressure-detecting device 2 can not reach setting value, then control system 5 can also be sentenced
Surely it is sampled insufficient or pipeline gas leakage.
When sampling probe 3 stretches into liquid level depth below, reaches and draw the requirement of a certain amount of volume sample (i.e. sampling probe 3 is stretched
Enter liquid level depth below and reach the minimum-depth for drawing a certain amount of sample) when, control sampling probe 3 does not continue to be inserted into, can be with
Ensure the contact liq of 3 minimum-depth of sampling probe, is convenient for the cleaning of sampling probe 3.
Sampling probe 3 is stretched into liquid level depth below and reaches pressure value corresponding to the minimum-depth for drawing a certain amount of sample
Be set as limit value, then when using the sampler to sample, during sampling probe 3 stretches under sample liquid level, pressure-detecting device 2
The pressure value variation in main line 4 is persistently detected, and detection data is fed back into control system 5.When pressure-detecting device 2 detects
Pressure value when reaching the limit value set in control system 5, at this time sampling probe 3 stretch into liquid level depth below be draw it is a certain amount of
The required minimum-depth of sample, the control of control system 5 stop stretching into for sampling probe 3, and sampling probe 3 stops being inserted into, to ensure
The contact liq of 3 minimum degree of sampling probe is convenient for the cleaning of sampling probe.
Since to stretch into liquid level depth below related with pressure value for sampling probe 3, then the volume pair of the sample itself in container
The sampling process of sampling probe 3 not will produce interference.When the sample in container is more or relatively expires, sampling probe 3 stretches into vessel port
Depth is shallower；And when the sample in container is less, the depth that sampling probe 3 stretches into vessel port is deeper, but no matter the sample in container
Product are more or few, and when drawing the sample of certain volume, the depth that sampling probe 3 stretches into sample liquid level is identical.By using this reality
With novel sampler, liquid level depth below is stretched into sampling probe 3 and is controlled, when can be more to avoid sample in container
The sampling probe 3 of appearance is fully inserted into, even main line 4 stretches into the problems such as cleaning brought in sample is difficult；Meanwhile when in container
When sample is less, it also can avoid the sample volume that sampling probe 3 stretches into the absorption that liquid level depth below is not enough brought and inspection be not achieved
The problem of survey requires.
Using the utility model sampler when, common operation is, keeps depression generator 1 to be in first and closes
Sampling probe 3 is extend into sample liquid level hereinafter, detecting pressure value by pressure-detecting device 2 at this time and feeding back to control by closed state
System 5 processed, control system 5 stretch into sample liquid level depth below to sampling probe 3 and control.When sampling probe 3 reaches setting deeply
After degree, stopping stretching into for sampling probe 3, and opens depression generator 1 and generate negative pressure, pipette samples liquid enters sampling probe 3, this
When pressure-detecting device 2 detect pressure value feed back to control system 5, the volume for controlling drawn sample.When reaching
When the volume of setting, control system 5 controls depression generator 1 and shuts down, and the volume that sampling probe 3 is drawn at this time is certain
The determined volume of sample needed for one detection project.
Preferably, the sampler of the utility model embodiment is additionally provided with triple valve 6, the threeway on the main line 4
Valve 6 includes public port 601, normally opened port 602, normally closed port 603, and the setting of the public port 601 is leaned in the main line 4
One end of the nearly depression generator 1, the normally opened port 602 is arranged in the main line 4 close to the sampling probe 3
One end, the normally closed port 603 are connected to outside air, and the control system 5 is connected with the triple valve 6, control triple valve 6
Opening and closing.
By the way that triple valve 6 is arranged, and by the normally closed port 603 of triple valve 6 and air communication, negative pressure can be balanced and filled
The air pressure in the airtight cavity of 1, sampling probe 3, the composition of main line 4 is set, the work of absorption and the emptying to sample is assisted.It is sampling
Before, control system 5, which can control, opens normally closed port 603, is passed through air, is then shut off normally closed port 603, opens normally open end
Mouth 602 balances the air pressure in whole device, is then sampled operation again.After sampling, the sample that sampling probe 3 is drawn
It needs to be sent into analytical equipment and carries out analysis detection, then when sampler is moved to analytical equipment corresponding position, control system 5
The normally opened port 602 of triple valve 6 is closed in control, is opened normally closed port 603, is passed through air, is then shut off normally closed port 603, beats
Normally opened port 602 is opened, air pressure and the ambient pressure for the airtight cavity that depression generator 1, sampling probe 3, main line 4 form is made to put down
Weighing apparatus promotes the outflow out of sampling probe 3 of the sample in sampling probe 3, into analytical equipment.In addition, after sampling is primary, need pair
Waste liquid is emptied and is cleaned in sampling probe 3, prevents from causing cross contamination when lower sub-sampling.First waste liquid in sampling probe 3 is discharged into
Then waste liquid pool cleans sampling probe 3, sampling probe 3 is stretched into cleaning liquid level, and negative pressure hair is opened in the control of control system 5
Generating apparatus 1 is drawn cleaning solution and is entered in sampling probe 3, be then shut off depression generator 1, opens the normally closed port of triple valve 6
603, it is passed through air, is then shut off normally closed port 603, opens normally opened port 602, by depression generator 1, sampling probe 3, supervisor
The air pressure for the airtight cavity that road 4 forms is balanced with ambient pressure, is promoted cleaning solution to be flowed out from sampling probe 3, is operated repeatedly,
Realize the cleaning to sampling probe 3.The process of the cooperation of control system 5 sampling or cleaning, the unlatching to each port of triple valve 6 and pass
It closes and is controlled.
Preferably, the sampler of the utility model, the main line 4 are equipped with threeway, and the threeway is respectively communicated with institute
State sampling probe 3, depression generator 1, outside air；The main line 4 is equipped with two-way valve 9 with outside air connectivity part, described
Control system 5 is connected with the two-way valve 9, controls the opening and closing of two-way valve 9.
The utility model can also use threeway and the matched scheme of two-way valve.By the way that threeway is arranged, threeway is distinguished
It is connected to sampling probe 3, depression generator 1, outside air；And two-way valve 9 is set, and by two-way valve 9 and air communication, Ke Yiping
The air pressure weighed in the airtight cavity that depression generator 1, sampling probe 3, main line 4 form, assists the absorption and emptying to sample
Work.Before sampling, control system 5, which can control, opens two-way valve 9, balances the air pressure in whole device, is then shut off
Two-way valve 9, then it is sampled operation.After sampling, the sample that sampling probe 3 is drawn, which needs to be sent into analytical equipment, to be divided
Analysis detection, then when sampler is moved to analytical equipment corresponding position, two-way valve 9 is opened in the control of control system 5, is passed through sky
Gas makes air pressure and the ambient pressure balance for the airtight cavity that depression generator 1, sampling probe 3, main line 4 form, promotes to sample
Sample outflow out of sampling probe 3 in needle 3, into analytical equipment.In addition, after sampling is primary, need to giving up in sampling probe 3
Liquid is emptied and is cleaned, and prevents from causing cross contamination when lower sub-sampling.Waste liquid in sampling probe 3 is first discharged into waste liquid pool, then
Sampling probe 3 is cleaned, sampling probe 3 is stretched into cleaning liquid level, depression generator 1 is opened in the control of control system 5, is drawn
Cleaning solution enters in sampling probe 3, is then shut off depression generator 1, two-way valve 9 is opened, by depression generator 1, sampling probe
3, the air pressure for the airtight cavity that main line 4 forms and ambient pressure balance, and cleaning solution is promoted to be flowed out from sampling probe 3, so anti-
Multiple operation, realizes the cleaning to sampling probe 3.The process of the cooperation of control system 5 sampling or cleaning, the unlatching to two-way valve 9 and pass
It closes and is controlled.
Preferably, the sampler of the utility model embodiment is additionally provided with air pump 7, bypass line 8, the air pump 7
Be connected with the normally closed port 603 of the triple valve 6 or with the two-way valve 9 by bypass line 8, the control system 5 with
The air pump 7 is connected, and controls the operating of air pump 7.
The sampler of the utility model, by be arranged air pump 7, using triple valve scheme when, air pump 7 is passed through
Bypass line 8 is connected with the normally closed port 603 of the triple valve 6；When scheme matched with two-way valve using threeway, make sky
Air pump 7 is connected by bypass line 8 with the two-way valve 9.It is actively passed through air using air pump 7, accelerates negative pressure and fills
The speed for setting the air pressure and ambient pressure balance of 1, sampling probe 3, the airtight cavity that main line 4 forms, improves sampling probe 3 and empties liquid
The efficiency of body, cleaning process.Control system 5 controls the operating of air pump 7, when needing to be passed through air, opens the normal of triple valve 6
Closed end mouth 603, and air pump 7 is opened, it is passed through air into device, makes external and internal pressure Fast-Balance.Meanwhile when discharge sampling probe
In 3 when waste liquid, the waste liquid in sampling probe 3 can be blown into waste liquid pool by the air being passed through by air pump 7；And when cleaning sampling
When needle 3, by using air pump 7, the discharge of cleaning solution can be accelerated, improve cleaning efficiency.Likewise, when using two-way valve 9
When, when needing to be passed through air, two-way valve 9 is opened, and open air pump 7, can also realize external and internal pressure Fast-Balance, accelerate to give up
Liquid discharge, the discharge and other effects for accelerating cleaning solution.
In addition, by using air pump 7, sample air blowing can be stirred evenly before sampling, improve the uniformity of sample, from
And keep testing result more accurate.Concrete operations are：By the control of control system 5, two-way valve 9 is opened, and open air pump
7, air is passed through into main line 4 by bypass line 8, air is sprayed from the sample tap of sampling probe 3, realizes the air blowing to sample
It stirs evenly.Sampling probe 3 is on sample liquid level or can be carried out under liquid level the operation stirred evenly of blowing.
Preferably, the cavity volume of the sampling probe 3 is greater than or equal to the volume of samples taken.
The cavity volume of sampling probe 3 can be less than the volume for the sample drawn needed for detection each time, then provide primary inspection
Sample needed for surveying, needs repeatedly to be sampled.Then for efficiency and reliability etc. the considerations of, the cavity volume of sampling probe 3
Usually setting is greater than or equal to the volume for the sample drawn needed for detection each time.The cavity volume of sampling probe 3 and sampling probe 3
Internal diameter, height are related, and the internal diameter that sampling probe 3 can be arranged is big, then height can be arranged shorter；Or when the internal diameter of sampling probe 3 is small,
Then corresponding height should be arranged higher.It, can be according to required maximum when different detection projects needs the sample of different volumes
The cavity volume of sampling probe 3 is arranged in volume, can also replace the sampling probe 3 of different model (i.e. different cavity volumes).Setting takes
The cavity volume of sample needle 3 is greater than or equal to the volume of samples taken, can be in order to sampling and the cleaning of sampling probe 3.And when use
The cavity volume of sampling probe 3 when being greater than or equal to the volume of samples taken, the vertical height of liquid that sampling probe 3 is drawn with
The voltage value (negative pressure value) of micro-pressure sensor is directly proportional, without additional calibration.
Preferably, the sampling probe 3 is by ruthenium, rhodium, palladium, silver, osmium, iridium, platinum, gold, titanium metal material, or containing ruthenium, rhodium,
It is prepared by the alloy material of any one or more in palladium, silver, osmium, iridium, platinum, gold, titanium.
Preferably, the sampling probe 3 is equipped with plating fluorine layer.
The material of sampling probe 3 should be the material for being not easy to chemically react with other substances, especially sample or reagent
Prepare, the erosion-resisting ruthenium of generally use, rhodium, palladium, silver, osmium, iridium, platinum, gold, titanium metal material, or containing ruthenium, rhodium, palladium, silver, osmium,
Prepared by the alloy material of any one or more in iridium, platinum, gold, titanium, avoid sampling probe 3 from reacting with sample or reagent, carry
The durability of high sampling probe 3, and can guarantee that cleaning up is easier.In addition, above-mentioned metal is selected, it can be to avoid sampling probe
Material interferes the detection of detected water sample.The content of the iron in detection water body is such as needed, then sampling probe should be avoided containing ferro element.
The metal that the utility model is selected can usually without detection in water quality detection, therefore as the material for preparing sampling probe 3
To improve the reliability of testing result.In actual use, other also may be selected in the sampling probe 3 that pure titanium metal can be selected to prepare
Sampling probe 3 prepared by metal or alloy, as long as element contained by sampling probe 3 does not influence taken liquid and detection and analysis.
In order to improve the performances such as anticorrosive, plating fluorine layer can be set on sampling probe 3.Plating fluorine layer should be arranged in sampling probe
The surface layer of sampling probe 3 is completely covered in 3 the inner surface and the outer surface.Plating fluorine layer is arranged can be in order to the cleaning of sampling probe 3.
Preferably, the depression generator 1 is arbitrary in plunger pump, piston pump, diaphragm pump, peristaltic pump, vacuum pump
It is a kind of.
Any one in plunger pump, piston pump, diaphragm pump, peristaltic pump, vacuum pump may be used in depression generator 1,
Generally use high-precision, corrosion resistant plunger pump are drawn and are discharged for whole device liquid and provide power.Such as use plunger pump
When, in use, the motor driver of plunger pump can be sent instructions to by control system 5, realizes and plunger pump is extracted or is arranged
Go out the control of liquid operation.
A kind of sampling device, including the mechanical arm that can be moved in certain space, the sampler being connected with mechanical arm, institute
It is above-mentioned sampler to state sampler.
A kind of detecting system, including above-mentioned sampler, with the analytical instrument tested sample.
The sampler of the utility model can coordinate the mechanical arm that can be moved in certain space to use, and realize automatic
Sampling, automatic sampling.Using the sampling device with mechanical arm, the detecting system of cooperation analytical instrument composition may be implemented point
Analyse the automation of detection process.
The sampler of the utility model can also coordinate other sampling devices, analysis and detection device to use, play quantitative suction
The effect of liquid is taken, and the contact sample of 3 minimum degree of sampling probe can be controlled, is convenient for the cleaning of sampling probe.
The foregoing description of the disclosed embodiments enables professional and technical personnel in the field to realize or use this practicality new
Type.Various modifications to these embodiments will be apparent to those skilled in the art, and determine herein
The General Principle of justice can be realized in other embodiments without departing from the spirit or scope of the present utility model.Cause
This, the utility model is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The widest range consistent with features of novelty.
Claims (10)
1. a kind of sampler, which is characterized in that including depression generator (1), pressure-detecting device (2), sampling probe (3),
Main line (4), control system (5), the depression generator (1) are connected with the sampling probe (3) by main line (4),
The depression generator (1) generates negative pressure for making inside sampler；The pressure-detecting device (2) is arranged in the master
On pipeline (4), for detecting pressure；The control system (5) respectively with the depression generator (1), pressure-detecting device
(2) it is connected, the control system (5) receives the data of the pressure-detecting device (2), and controls the depression generator
(1) operating.
2. the apparatus according to claim 1, which is characterized in that triple valve (6) is additionally provided on the main line (4), it is described
Triple valve (6) includes public port (601), normally opened port (602), normally closed port (603), public port (601) setting
In the main line (4) close to one end of the depression generator (1), the normally opened port (602) is arranged in the supervisor
Road (4) is connected to close to one end of the sampling probe (3), the normally closed port (603) with outside air, the control system (5)
It is connected with the triple valve (6), the opening and closing of control triple valve (6).
3. the apparatus according to claim 1, which is characterized in that the main line (4) is equipped with threeway, the threeway difference
It is connected to the sampling probe (3), depression generator (1), outside air；The main line (4) is equipped with outside air connectivity part
Two-way valve (9), the control system (5) are connected with the two-way valve (9), the opening and closing of control two-way valve (9).
4. the apparatus of claim 2, which is characterized in that be additionally provided with air pump (7), bypass line (8), the air
Pump (7) is connected by bypass line (8) with the normally closed port (603) of the triple valve (6), the control system (5) and institute
It states air pump (7) to be connected, the operating of control air pump (7).
5. device according to claim 3, which is characterized in that be additionally provided with air pump (7), bypass line (8), the air
Pump (7) is connected by bypass line (8) with the two-way valve (9), and the control system (5) is connected with the air pump (7),
Control the operating of air pump (7).
6. device according to any one of claim 1-3, which is characterized in that the cavity volume of the sampling probe (3) is big
In or equal to samples taken volume.
7. device according to claim 6, which is characterized in that the sampling probe (3) is equipped with plating fluorine layer.
8. the apparatus according to claim 1, which is characterized in that the depression generator (1) be plunger pump, piston pump,
Any one in diaphragm pump, peristaltic pump, vacuum pump.
9. a kind of sampling device, including the mechanical arm that can be moved in certain space, the sampler being connected with mechanical arm, special
Sign is that the sampler is the sampler described in any one of claim 1-7.
10. a kind of detecting system, which is characterized in that including the sampler described in any one of claim 1-7, and to sample
The analytical instrument tested.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720963810.6U CN207742210U (en) | 2017-08-03 | 2017-08-03 | A kind of sampler and the sampling device using the device, detecting system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720963810.6U CN207742210U (en) | 2017-08-03 | 2017-08-03 | A kind of sampler and the sampling device using the device, detecting system |
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|---|---|
| CN207742210U true CN207742210U (en) | 2018-08-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114112526A (en) * | 2020-08-31 | 2022-03-01 | 深圳市帝迈生物技术有限公司 | Sample suction method, system, device and computer readable storage medium |
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2017
- 2017-08-03 CN CN201720963810.6U patent/CN207742210U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114112526A (en) * | 2020-08-31 | 2022-03-01 | 深圳市帝迈生物技术有限公司 | Sample suction method, system, device and computer readable storage medium |
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